Schweitzer Engineering Laboratories SEL-311C Instruction Manual
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Schweitzer Engineering Laboratories SEL-311C Instruction Manual

Protection and automation system
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Table of Contents

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SEL-311C Relay
Protection and
Automation System
Instruction Manual
20060320
*PM311C-01-NB*

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Summary of Contents for Schweitzer Engineering Laboratories SEL-311C

  • Page 1 SEL-311C Relay Protection and Automation System Instruction Manual 20060320 *PM311C-01-NB*...
  • Page 2 SEL products appearing in this document may be covered by US and Foreign patents. Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and international copyright and patent laws in its products, including without limitation software, firmware, and documentation.

  • Page 3: Table Of Contents

    Potential Transformer Inputs ......................... 2.14 Wye-Connected Voltages ........................2.14 Serial Ports ............................2.14 IRIG-B Time-Code Input ........................2.15 SEL-311C AC/DC Connection Diagrams for Various Applications............. 2.16 Circuit Board Connections ..........................2.19 Accessing the Relay Circuit Boards ...................... 2.19 Output Contact Jumpers ........................2.23 “Extra Alarm”...
  • Page 4 Table of Contents Out-of-Step Characteristics..........................3.22 Use SEL-321 Relay Application Guides for the SEL-311C ..............3.22 Instantaneous/Definite-Time Overcurrent Elements..................3.26 Phase Instantaneous/Definite-Time Overcurrent Elements ..............3.26 Residual Ground Instantaneous/Definite-Time Overcurrent Elements ..........3.28 Negative-Sequence Instantaneous/Definite-Time Overcurrent Elements ..........3.30 Time-Overcurrent Elements...........................3.33 Phase Time-Overcurrent Elements ......................3.33 Residual Ground Time-Overcurrent Element ..................3.36 Negative-Sequence Time-Overcurrent Element ..................3.38...
  • Page 5 Trip Settings TRSOTF and TR ......................5.11 Trip Setting DTT ........................... 5.11 Use Existing SEL-321 Relay Application Guides for the SEL-311C Relay ........5.12 Permissive Overreaching Transfer Trip Logic ....................5.13 Use Existing SEL-321 Relay POTT Application Guide for the SEL-311C ......... 5.13 External Inputs ............................
  • Page 6 General Operation of Rotating Default Display Settings ..............7.37 Settings Examples ..........................7.37 Additional Settings Examples .......................7.39 Active Setting Group Switching Considerations ...................7.40 Additional Rotating Default Display Example ..................7.41 Displaying Time-Overcurrent Elements on the Rotating Default Display ..........7.41 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 7 Port Connector and Communications Cables....................10.2 IRIG-B ..............................10.2 Relay Word Bit TIRIG .......................... 10.3 Relay Word Bit TSOK .......................... 10.3 SEL-311C to Computer ......................... 10.3 SEL-311C to Modem or Other DCE ..................... 10.3 Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 8 Table of Contents SEL-311C to SEL Communications Processor or SEL-2100 ...............10.4 SEL-311C to SEL-DTA2 ........................10.4 SEL-311C to SEL-PRTU ........................10.4 Communications Protocols ..........................10.6 Hardware Protocol ..........................10.6 Software Protocols ..........................10.6 Serial Port Automatic Messages ........................10.9 SEL-DTA Protocol ..........................10.9 Serial Port Access Levels..........................10.10 Access Level 0 .............................10.10...
  • Page 9 Section 14: Application Settings for SEL-221 Series Relays Overview ............................... 14.1 SEL-221G to SEL-311C Settings Conversion Guide..................14.2 Key Differences Between the SEL-221G and the SEL-311C ............... 14.3 Application Settings ..........................14.3 Convert SEL-221G Primary Quantities to SEL-311C Secondary Quantities ........14.4 Convert SEL-221G Relay Settings to SEL-311C Settings ..............
  • Page 10 Table of Contents SEL-221F-3 to SEL-311C Settings Conversion Guide ................14.32 Application Settings ..........................14.33 Convert SEL-221F-3 Primary Quantities to SEL-311C Secondary Quantities ........14.33 Convert SEL-221F-3 Settings to SEL-311C Settings ................14.33 Convert SEL-221F-3 Output Mask Logic Settings to SEL Control Equations ......14.35 OGIC SEL-221C to SEL-311C Settings Conversion Guide ..................14.39...
  • Page 11 DNA Message ............................D.12 BNA Message ............................D.13 SNS Message ............................D.14 Appendix E: Compressed ASCII Commands Overview .................................E.1 CASCII Command—General Format ......................E.2 CASCII Command—SEL-311C ........................E.4 CSTATUS Command—SEL-311C .........................E.6 CHISTORY Command—SEL-311C.......................E.7 CEVENT Command—SEL-311C........................E.8 CSU Command—SEL-311C.........................E.11 Appendix F: Setting Negative-Sequence Overcurrent Elements Setting Negative-Sequence Definite-Time Overcurrent Elements ..............
  • Page 12 Acknowledge Message Sent From Master to Relay, and From Relay to Master ........K.7 Appendix L: QuickSet SEL-5030 Software ERATOR Overview................................. L.1 QuickSet System Requirements .................... L.2 ERATOR Installation ..............................L.3 Starting the QuickSet Software ..................... L.4 ERATOR SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 13: List Of Tables

    List of Tables Table 1.1 SEL-311C Models........................1.2 Table 2.1 Communications Cables to Connect the SEL-311C to Other Devices ........ 2.15 Table 2.2 Output Contact Jumpers and Corresponding Output Contacts ..........2.23 Table 2.3 Move Jumper JMP 23 to Select Extra Alarm............... 2.24 Table 2.4...
  • Page 14 Equations Associated With U.S. Curves ................9.5 Table 9.4 Equations Associated With I.E.C. Curves ................9.5 Table 9.5 SEL-311C Models 0311C00x and 0311C01x Relay Word Bits ..........9.16 Table 9.6 Relay Word Bit Definitions for the SEL-311C..............9.17 Table 10.1 Pinout Functions for EIA-232 Serial Ports 2, 3, and F............10.2 Table 10.2...
  • Page 15 Table 14.22 SEL-221F-3 Setting PSVC for Settings S, P, and E............14.38 Table 14.23 SEL-221F-3 Setting BFIN1 ....................14.38 Table 14.24 SEL-311C Settings Calculated From SEL-221C Settings ..........14.40 Table 14.25 SEL-311C SEL Control Equation Equivalent OGIC to Each SEL-221C Mask Logic Setting ................14.43 Table 14.26...
  • Page 16 List of Tables Table K.5 Acknowledge Message ......................K.7 Table K.6 Response Codes ........................K.7 Table L.1 QuickSet System Requirements ..............L.2 ERATOR SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 17: List Of Figures

    Figure 2.16 Jumper, Connector, and Major Component Locations on the SEL-311C Main Board..2.20 Figure 2.17 Jumper, Connector, and Major Component Locations on the SEL-311C Extra I/O Board . 2.21 Figure 2.18 Interface Board 5 Component Layout .................. 2.22 Figure 3.1 Positive-Sequence Polarized Mho Element With Reach Equal to Line Impedance ....
  • Page 18 POTT Logic ..........................5.16 Figure 5.7 Permissive Input Logic Routing to Trip Logic ..............5.17 Figure 5.8 SEL-311C Connections to Communications Equipment for a Two-Terminal Line POTT Scheme................5.18 Figure 5.9 SEL-311C Connections to Communications Equipment for a Three-Terminal Line POTT Scheme ................5.18 Figure 5.10...
  • Page 19 Rotating Default Display Replaces Traditional Panel Light Installations......7.37 Figure 8.1 Plotted Breaker Maintenance Points for an Example Circuit Breaker........8.3 Figure 8.2 SEL-311C Breaker Maintenance Curve for an Example Circuit Breaker ......8.5 Figure 8.3 Operation of SEL Control Equation Breaker Monitor Initiation Setting ....... 8.6 OGIC Figure 8.4...
  • Page 20 Phase-to-Ground Fault Test Connections Using a Single Current Source ......13.18 Figure 13.6 Phase-to-Phase Fault Test Connections Using a Single Current Source ......13.19 Figure 13.7 Communications Connections Between the SEL-311C and a Terminal ......13.19 Figure 13.8 Phase Distance Element Test Voltage Signals ..............13.37 Figure 14.1 SEL-221G and SEL-311C Out-of-Step Characteristics ............14.3...
  • Page 21 Sample MET PM Command Response................G.13 Figure H.1 Result of Rising Edge Operators on Individual Elements in Setting ER ......H.7 Figure H.2 Result of Falling Edge Operator on a Deasserting Out-of-Step Blocking Element....H.8 Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 22 This page intentionally left blank...

  • Page 23: Preface

    Preface Manual Overview The SEL-311C Relay Instruction Manual describes common aspects of relay application and use. It includes the necessary information to install, set, test, and operate the relay and more detailed information about settings and commands. An overview of each manual section and topics follows: Preface.
  • Page 24 ➤ Time-overcurrent curves (5 U.S. and 5 I.E.C. curves) ➤ Relay Word bit table and definitions (Relay Word bits are used in SEL control equation settings) OGIC Relay Instruction Manual SEL-311C Date Code 20060320...
  • Page 25 OGIC global, SER, text label, and serial port settings The Settings Sheets can be photocopied and filled out to set the SEL-311C. Note that these sheets correspond to the serial port SET commands listed in Table 9.1. Section 14: Application Settings for SEL-221 Series Relays for a description of Application Settings (APP = 221G, 221G5, 221H, 221F, 221F3, 221C, 221-16, 2PG10).

  • Page 26: Page Numbering

    The page number appears at the outside edge of each page; a vertical bar separates the page number from the page title block. The page numbers of the SEL-311C Relay Instruction Manual are represented by the following building blocks: ➤...

  • Page 27: Conventions

    Examples This instruction manual uses several example illustrations and instructions to explain how to effectively operate the SEL-311C. These examples are for demonstration purposes only; the firmware identification information or settings values included in these examples may not necessarily match those in the current version of your SEL-311C.

  • Page 28: Safety Information

    Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury. DANGER Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. Relay Instruction Manual SEL-311C Date Code 20060320...

  • Page 29: Overview

    Section 1 Introduction & Specifications Overview This section includes the following: ➤ SEL-311C Models on page 1.2 ➤ Applications on page 1.3 ➤ AC/DC Connections on page 1.4 ➤ Communications Connections on page 1.8 ➤ Specifications on page 1.10 Instruction Manual...

  • Page 30: Sel-311C Models

    The x field indicates horizontal, vertical, rack, or panel mounting. These numbers should not be used to order an SEL-311C. To order an SEL-311C, refer to the actual ordering information sheets.

  • Page 31: Applications

    ITS ® IRRORED SEL-311C Compensator Distance Application TX COMM TX COMM RX EQUIP RX EQUIP ITS ® Figure 1.1 SEL-311C Transmission Line Protection With Pilot Protection, M Communications, IRRORED Reclosing, and Synchronism Check Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 32: Ac/Dc Connections

    Section 14: Application Settings for SEL-221 Series Relays describes how to easily set the SEL-311C to emulate the popular SEL-221 relays. For installation in systems with drawings designed for SEL-311C relays, use the alphanumeric terminal labels. Figure 2.2 through Figure 2.11...

  • Page 33: Figure 1.2 Sel-311C Inputs, Outputs, And Communications Ports (Models 0311C00X And 0311C01X)

    TRIP TIME TIME COMM COMM SOTF SOTF BATTERY BATTERY MONITOR MONITOR FAULT TYPE FAULT TYPE ZONE/LEVEL ZONE/LEVEL CHASSIS CHASSIS GROUND GROUND Figure 1.2 SEL-311C Inputs, Outputs, and Communications Ports (Models 0311C00x and 0311C01x) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 34: Output Contacts

    Output Contacts If the output contacts are high-current interrupting output contacts, they are polarity dependent. See Table 1.1 for information on SEL-311C models with the high-current interrupting output contact option. See Output Contacts on page 2.12 for more information on the polarity dependence of high-current interrupting output contacts.

  • Page 35: Figure 1.3 Sel-311C Extra I/O Board (Model 0311C01X)

    AC/DC Connections OUT201 OUT201 OUT202 OUT202 OUT203 OUT203 OUT204 OUT204 OUT205 OUT205 OUT206 OUT206 OUT207 OUT207 OUT208 OUT208 OUT209 OUT209 OUT210 OUT210 OUT211 OUT211 OUT212 OUT212 Figure 1.3 SEL-311C Extra I/O Board (Model 0311C01x) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 36: Communications Connections

    SEL-311C RELAY (#1) SEL-311C RELAY (#2) Front Panel # C234A OR . . . PORT F PORT F CONNECT TO THE SEL-311C RELAYS INDIVIDUALLY VIA THE FRONT-PANEL SERIAL PORT Figure 1.4 SEL-311C Communications Connections Examples SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 37 Introduction & Specifications Communications Connections SEL-311C Relay SEL-311C Relay SEL-2800 SEL-2800 SEL-2800 SEL-2505 Transformer Alarms SEL-2800 SEL-2800 IN101 SEL-2100 Relay Protection Logic Processor Figure 1.4 SEL-311C Communications Connections Examples (Continued) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 38: Specifications

    8 mA of current. All current ratings are at nominal 250 Vdc 0.20 A L/R = 40 ms input voltages. Note: 220 Vdc optoisolated inputs are not available in the Connectorized version of the relay. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 39 (33.5–150 V; 45–65 Hz) Damp Heat Cyclic: IEC 60068-2-30:1980, Test Db; 55°C, 6 cycles, 95% humidity Magnitudes: ±2% Dry Heat: IEC 60068-2-2:1974; Test Bd; Angles: ±1° 16 hr. @ +85°C Object Penetration: IEC 60529:1989, IP30, IP54 Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 40 Accuracy: OFF, 0.05 to 64 Ω sec, 0.01 Ω steps Quadrilateral Reactance Transient Overreach: <5% of pickup Reach: (5 A nominal) OFF, 0.25 to 320 Ω sec, 0.01 Ω steps (1 A nominal) SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 41 32 ms at 60 Hz (Max) Time Delays: 2–16,000 cycles, 0.25-cycle steps Maximum Definite-Time Delay Accuracy: ±0.25 cycles, ±1% of setting at 60 Hz Steady-State plus Transient Overshoot: ±0.01 Hz Supervisory 27: 20–150 V, ±5%, ±0.1 V Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 42 This page intentionally left blank...

  • Page 43: Section 2: Installation

    Section 2 Installation Relay Mounting Figure 2.1 SEL-311C Dimensions and Panel-Mount Cutout To better use Figure 2.1, refer to Table 1.1 for rack unit height information on SEL-311C models (2U or 3U). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 44: Front- And Rear-Panel Diagrams

    Installation Front- and Rear-Panel Diagrams Front- and Rear-Panel Diagrams Figure 2.2 SEL-311C Front- and Rear-Panel Drawings—Models 0311C00H2 (Rack) and 0311C0032 (Panel) SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 45: Figure 2.3 Sel-311C Front- And Rear-Panel Drawings-Models 0311C00V1 (Rack) And 0311C0041 (Panel)

    LEVEL SOTF SOTF COMM COMM TIME TIME FAULT FAULT TYPE TYPE TRIP TRIP SERIAL SERIAL PORT F PORT F 196-0263 196-0263 Figure 2.3 SEL-311C Front- and Rear-Panel Drawings—Models 0311C00V1 (Rack) and 0311C0041 (Panel) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 46: Figure 2.4 Sel-311C Front-Panel Drawings-Models 0311C01H2 (Rack) And 0311C0132 (Panel)

    Installation Front- and Rear-Panel Diagrams Figure 2.4 SEL-311C Front-Panel Drawings—Models 0311C01H2 (Rack) and 0311C0132 (Panel) SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 47: Figure 2.5 Sel-311C Front-Panel Drawings-Models 0311C01H1 (Rack) And 0311C0131 (Panel)

    Installation Front- and Rear-Panel Diagrams Figure 2.5 SEL-311C Front-Panel Drawings—Models 0311C01H1 (Rack) and 0311C0131 (Panel) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 48: Figure 2.6 Sel-311C Front-Panel Drawings-Models 0311C01V1 And 0311C01V2

    Installation Front- and Rear-Panel Diagrams Figure 2.6 SEL-311C Front-Panel Drawings—Models 0311C01V1 and 0311C01V2 SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 49: Figure 2.7 Sel-311C Front-Panel Drawings-Models 0311C0141 And 0311C0142

    FAULT TYPE TYPE TYPE TYPE TRIP TRIP TRIP TRIP SERIAL SERIAL SERIAL SERIAL PORT F PORT F PORT F PORT F 196-0272 196-0272 196-0273 196-0273 Figure 2.7 SEL-311C Front-Panel Drawings—Models 0311C0141 and 0311C0142 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 50: Figure 2.8 Sel-311C 3U Rear-Panel Terminal Block Drawings (With And Without Additional I/O Board)

    Installation Front- and Rear-Panel Diagrams Figure 2.8 SEL-311C 3U Rear-Panel Terminal Block Drawings (With and Without Additional I/O Board) SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 51: Figure 2.9 Sel-311C 3U Rear-Panel Terminal Block Drawing (Fast Hybrid High-Current Interrupting Output Contacts)

    Installation Front- and Rear-Panel Diagrams Figure 2.9 SEL-311C 3U Rear-Panel Terminal Block Drawing (Fast Hybrid High-Current Interrupting Output Contacts) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 52: Figure 2.10 Sel-311C 2U Rear-Panel Connectorized ® Drawing

    2.10 Installation Front- and Rear-Panel Diagrams ® Figure 2.10 SEL-311C 2U Rear-Panel Connectorized Drawing SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 53: Figure 2.11 Sel-311C 3U Rear-Panel Connectorized Drawings (With And Without Additional I/O Board)

    Installation 2.11 Front- and Rear-Panel Diagrams Figure 2.11 SEL-311C 3U Rear-Panel Connectorized Drawings (With and Without Additional I/O Board) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 54: Making Rear-Panel Connections

    Both SEL-311C standard terminal numbers and SEL-221 terminal numbers are shown on the rear-panel wiring connections for those models. A properly programmed SEL-311C may be installed in place of an SEL-221 with no changes to the terminal numbers in a user’s wiring diagram.
  • Page 55 If an open switch may exist on either side of the output contact, only one condition may be considered. Two open switches (one on each side of the contact) defeat the charge circuit. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 56: Optoisolated Inputs

    All ports are independent—you can communicate to any combination simultaneously. Serial Port 1 on all the SEL-311C models is an EIA-485 port (4-wire). The Serial Port 1 plug-in connector accepts wire size AWG 24 to 12. Strip the wires 0.31 inches (8 mm) and install with a small slotted-tip screwdriver. The...

  • Page 57: Irig-B Time-Code Input

    C234A and specify the length needed control. (standard length is eight feet). To connect the SEL-311C Port 2 to the SEL-2020 Communications Processor that supplies the communication link and the IRIG-B time synchronization signal, order cable number C273A. For connecting devices at distances over 30 feet, SEL offers fiber-optic transceivers.

  • Page 58: Sel-311C Ac/Dc Connection Diagrams For Various Applications

    Voltage Channel VS is used in voltage and synchronism check elements and voltage metering. Current Channel IP does not need to be connected. Channel IP provides current for current-polarized directional elements. Figure 2.13 SEL-311C Provides Distance and Overcurrent Protection, Reclosing, and Synchronism Check for a Transmission Line SEL-311C Relay...

  • Page 59: Figure 2.14 Sel-311C Provides Distance And Overcurrent Protection And Reclosing For A Transmission Line (Current-Polarization Source Connected To Channel Ip)

    In this example, current Channel IP provides current polarization for a directional element used to control ground elements. Figure 2.14 SEL-311C Provides Distance and Overcurrent Protection and Reclosing for a Transmission Line (Current-Polarization Source Connected to Channel IP) Instruction Manual...

  • Page 60: Figure 2.15 Sel-311C Line Protection Through A Delta-Wye Transformer Using Compensator Distance Elements

    SEL-311C AC/DC Connection Diagrams for Various Applications Use compensator distance elements for line protection through a delta-wye transformer. Voltage VS does not need to be connected. Figure 2.15 SEL-311C Line Protection Through a Delta-Wye Transformer Using Compensator Distance Elements SEL-311C Relay Instruction Manual...

  • Page 61: Circuit Board Connections

    DANGER Step 4. Identify which drawout tray needs to be removed. Removal of this front panel exposes SEL-311C model 0311C00x has only a main board. Model circuitry which may cause electrical shock that can result in injury or 0311C01x has space for an extra I/O board below the main death.

  • Page 62: Figure 2.16 Jumper, Connector, And Major Component Locations On The Sel-311C Main Board

    JMP2 JMP2 ALARM ALARM JMP23 JMP23 OUT107 OUT107 OUT106 OUT106 OUT105 OUT105 OUT104 OUT104 OUT103 OUT103 OUT102 OUT102 OUT101 OUT101 Figure 2.16 Jumper, Connector, and Major Component Locations on the SEL-311C Main Board SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 63: Figure 2.17 Jumper, Connector, And Major Component Locations On The Sel-311C Extra I/O Board

    JMP24 OUT205 OUT205 JMP25 JMP25 OUT204 OUT204 JMP26 JMP26 OUT203 OUT203 JMP27 JMP27 OUT202 OUT202 JMP28 JMP28 OUT201 OUT201 Figure 2.17 Jumper, Connector, and Major Component Locations on the SEL-311C Extra I/O Board Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 64: Figure 2.18 Interface Board 5 Component Layout

    2.22 Installation Circuit Board Connections Figure 2.18 Interface Board 5 Component Layout SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 65: Output Contact Jumpers

    0311C00x and 0311C01x JMP21–JMP29 Figure 2.16 (but not JMP23) OUT212–OUT201 0311C01x JMP17–JMP28 Figure 2.17 “Extra Alarm” Output All the SEL-311C relays have dedicated alarm output contacts (labeled ALARM—see Figure 2.2, Figure 2.3, and Figure 2.8). Often more than one Contact Control...

  • Page 66: Password And Breaker Jumpers

    Section 10: Serial Port Communications and Commands). The OPEN, CLOSE, and PULSE commands are used primarily to assert output contacts for circuit breaker control or testing purposes (see Section 10: Serial Port Communications and Commands). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 67: Serial Port Voltage Jumpers

    Accessing the Relay Circuit Boards. Set the relay date and time via serial communications port or front panel (see Section 10: Serial Port Communications and Commands Section 11: Front- Panel Interface (Only on Models With LCD)). Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 68 This page intentionally left blank...

  • Page 69: Frequency Elements

    Frequency Elements Distance Elements Mho Phase Distance The SEL-311C Relay has four independent zones of mho phase distance protection. All zones are independently set. Zones 1 and 2 are fixed to operate Elements in the forward direction only. Zones 3 and 4 can be set to operate in either the forward or reverse direction.

  • Page 70: Table 3.1 Phase Distance Calculations

    In the compensator distance three-phase element, the polarizing voltage is (–jV – 0.25 • V mem) and the line drop compensated voltage is (V – Z • I SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 71: Figure 3.1 Positive-Sequence Polarized Mho Element With Reach Equal To Line Impedance

    I • X cos (θ) > 0 (Z • I - V) Vmem I • R I • Z source Forward Internal Fault Figure 3.1 Positive-Sequence Polarized Mho Element With Reach Equal to Line Impedance Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 72: Figure 3.2 Compensator-Distance Phase-To-Phase Element Operation

    Test Angle θ > 180˚ sin (θ) > 0 sin (θ) < 0 Fault Near Balance Point Internal Fault Note: V , and V are internal element voltages, not system voltages. Figure 3.2 Compensator-Distance Phase-to-Phase Element Operation SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 73: Figure 3.3 Compensator-Distance Three-Phase Element Operation

    The compensator distance element measures impedance through the transformer Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 74: Table 3.2 Distance Elements Settings

    Transient Overreach: <5% of pickup Max. Operating Time: See pickup and reset time curves in Figure 3.20 Figure 3.21. If setting EADVS = N, settings 50PP2–50PP4 are at minimum values and are hidden. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 75: Figure 3.4 Zone 1 Ab Phase Distance Logic

    4.14; w from Figure 4.15; e from Figure 3.18; r from Figure 3.23; t from Figure 4.2; y from Figure 4.1; u from Figure 3.15. Figure 3.4 Zone 1 AB Phase Distance Logic Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 76: Figure 3.5 Zone 2 Ab Phase Distance Logic

    Note 2: ABC2 and PP2 are compensator distance element calculations. q From Figure 4.14; w from Figure 4.15; e from Figure 3.18; r from Figure 3.23; t from Figure 4.1. Figure 3.5 Zone 2 AB Phase Distance Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 77: Figure 3.6 Zones 3 And 4 Ab Phase Distance Logic

    Note 2: ABCn and PPn are compensator distance element calculations. q From 4.14; w from 4.15; e from 3.18; r from 3.23; t from Figure Figure Figure Figure Figure 4.1. Figure 3.6 Zones 3 and 4 AB Phase Distance Logic Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 78: Ground Distance Elements

    Distance, Out-of-Step, Overcurrent, Voltage, Synchronism Check, and Frequency Elements Distance Elements Ground Distance The SEL-311C has four independent zones of mho and quadrilateral ground distance protection. All zones are independently set. Zones 1 and 2 are Elements forward direction only, and Zones 3 and 4 can be set in either a forward or reverse direction.

  • Page 79: Figure 3.7 Zone 1 Mho Ground Distance Logic

    Note 1: mAG = A-Phase to Ground Distance Calculation, Z1MG = Zone 1 Distance Setting, X1 = Zone 1 Extension t. q From Figure 4.12; w from Figure 4.2; e from Figure 5.3; r from Figure 4.1; t from Figure 3.15. Figure 3.7 Zone 1 Mho Ground Distance Logic Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 80: Figure 3.8 Zone 2 Mho Ground Distance Logic

    Note 1: mAG = A-Phase to Ground Distance Calculation, ZnMG = Zone n Distance Setting, n = 3 for Zone 3, n = 4 for Zone 4. q From Figure 4.12; w from Figure 5.3; e from Figure 4.1. Figure 3.9 Zones 3 and 4 Mho Ground Distance Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 81: Figure 3.10 Zone 1 Quadrilateral Ground Distance Logic

    4.7; w from Figure 4.6; e from Figure 4.12; r from Figure 5.3; t from Figure 4.1; y from Figure 4.2; u from Figure 3.10. Figure 3.10 Zone 1 Quadrilateral Ground Distance Logic Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 82: Figure 3.11 Zone 2 Quadrilateral Ground Distance Logic

    Resistance Calculation, RG2 = Zone 2 Resistance Setting. q From Figure 4.7; w from Figure 4.6; e from Figure 4.12; r from Figure 5.3; t from Figure 4.1. Figure 3.11 Zone 2 Quadrilateral Ground Distance Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 83: Figure 3.12 Zones 3 And 4 Quadrilateral Ground Distance Logic

    Resistance Calculation; RGn = Zone n Resistance Setting, n = 3 for Zone 3, n = 4 for Zone 4. q From Figure 4.7; w from Figure 4.6; e from Figure 4.12; r from Figure 5.3; t from Figure 4.1. Figure 3.12 Zones 3 and 4 Quadrilateral Ground Distance Logic Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 84: Distance Element Operating Time Curves At Nominal Frequency

    Operating Time Curves at Nominal Frequency Figure 3.13 Figure 3.14 show operating times for the SEL-311C distance elements. The diagrams show operating times at each test point. Operating times include output contact closure time. For the distance element test, a fault was applied at a location representing a percentage of the Zone 1 relay reach setting.

  • Page 85: Figure 3.13 Ground And Phase Distance Speed Curves-Standard Output

    Distance, Out-of-Step, Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3.17 Distance Element Operating Time Curves at Nominal Frequency SEL-311C Phase Mho Operating Times Phase-to-Phase Faults 1.75 1.25 SIR = 0.1 SIR = 1.0 SIR = 10.0 SIR = 30.0 0.75 0.25...

  • Page 86: Figure 3.14 Ground And Phase Distance Speed Curves-Fast Hybrid Output

    3.18 Distance, Out-of-Step, Overcurrent, Voltage, Synchronism Check, and Frequency Elements Distance Element Operating Time Curves at Nominal Frequency SEL-311C with Fast Hybrid Output Contacts Phase Mho Operating Times 1.75 1.25 SIR = 0.1 SIR = 1.0 SIR = 10.0 SIR = 30.0 0.75...

  • Page 87: Additional Distance Element Supervision

    3.19 Distance Element Operating Time Curves at Nominal Frequency Additional Distance The SEL-311C uses Relay Word bit VPOLV for positive-sequence memory supervision of mho and quadrilateral characteristics. VPOLV asserts when the Element Supervision memorized positive-sequence polarizing voltage is greater than 1 Volt.

  • Page 88: Zone Time Delay Elements

    Distance, Out-of-Step, Overcurrent, Voltage, Synchronism Check, and Frequency Elements Distance Element Operating Time Curves at Nominal Frequency Zone Time Delay The SEL-311C supports two philosophies of zone timing: independent or common timing (see Figure 3.16). For the independent timing mode, the Elements phase and ground distance elements drive separate timers for each zone.

  • Page 89: Figure 3.16 Zone Timing Elements

    Zone 4 Delay Timer Logic q From Figure 3.4; w from Figure 3.7; e from Figure 3.5; r from Figure 3.8; t from Figure 3.6; y from Figure 3.9. Figure 3.16 Zone Timing Elements Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 90: Out-Of-Step Characteristics

    Enable the advanced user settings to set these elements individually (EADVS = Y). Use SEL-321 Relay The out-of-step logic and settings in the SEL-311C are similar to those in the SEL-321-5 Relay. Refer to SEL Application Guide 97-13: SEL-321-5 Relay Application Guides...

  • Page 91: Table 3.7 Oos Relay Word Bits

    X6ABC Impedance inside Zone 6 Out-of-step trip X5ABC Impedance inside Zone 5 OSB1 Block Zone 1 during an out-of-step condition UBOSB Unblock out-of-step blocking OSB2 Block Zone 2 during an out-of-step condition Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 92: Figure 3.17 Out-Of-Step Zone Detection Logic

    Im (Z1) Word Zone 6 Bits Z1 = X6ABC Re (Z1) Zone 5 X5ABC (Internal Function) Unblock UBOSBD UBOSB q From Figure 5.3; w from Figure 4.1. Figure 3.17 Out-of-Step Zone Detection Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 93: Figure 3.18 Out-Of-Step Logic

    Distance, Out-of-Step, Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3.25 Out-of-Step Characteristics q From Figure 3.17; w to Figure 3.4; e to Figure 3.5; r to Figure 3.6. Figure 3.18 Out-of-Step Logic Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 94: Instantaneous/Definite-Time Overcurrent Elements

    0 (logical 0), if no phase current exceeds the 50P1P setting Ideally, set 50P1P > 50P2P > 50P3P so that overcurrent elements will display in an organized fashion in event reports (see Figure 3.19 Table 12.4). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 95: Figure 3.19 Levels 1 Through 3 Phase Instantaneous/Definite-Time Overcurrent Elements

    Input IN105 asserted (67P1TC = IN105 = logical 1): 67P1/67P1T follows 50P1. 67P1TC = M2P 67P1/67P1T uses the Zone 2 mho phase distance element to provide forward directional control. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 96: Residual Ground Instantaneous/Definite-Time Overcurrent Elements

    Figure 3.21 show pickup and reset time curves applicable to all nondirectional instantaneous overcurrent elements in the SEL-311C (60 Hz or 50 Hz relays). These times do not include output contact operating time and, thus, are accurate for determining element operation time for use in internal SEL control equations.

  • Page 97: Figure 3.22 Levels 1 Through 4 Residual Ground Instantaneous

    32GF E50G = 4 (Setting) DIR 4 = F (Setting) q 32GR q From Figure 4.12. Figure 3.22 Levels 1 Through 4 Residual Ground Instantaneous/Definite-Time Overcurrent Elements With Directional and Torque Control Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 98: Negative-Sequence Instantaneous/Definite-Time Overcurrent Elements

    3.23, Levels 1 and 2 67Qn elements have directional controls fixed on setting negative-sequence forward. Levels 3 and 4 have selectable forward and reverse directional overcurrent elements. controls. See Figure 4.14 for more information on this optional directional control. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 99 ±0.01 A secondary and ±3% of setting (1 A nominal phase current inputs, IA, IB, IC) Timer ±0.25 cycles and ±0.1% of setting Transient Overreach <5% of setting Pickup and Reset Time Curves Figure 3.20 Figure 3.21. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 100: Figure 3.23 Levels 1 Through 4 Negative-Sequence Instantaneous

    67Q4T E50Q = 4 q 32QF (Setting) DIR 4 = F (Setting) q 32QR q From Figure 4.14. Figure 3.23 Levels 1 Through 4 Negative-Sequence Instantaneous/Definite-Time Overcurrent Elements With Directional and Torque Control SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 101: Time-Overcurrent Elements

    Table 9.6 set directly to logical 1 control equation torque control settings (e.g., 51PTC) cannot be set directly to OGIC logical 0. Section 9: Setting the Relay for additional time-overcurrent element setting information. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 102: Table 3.10 Phase Time-Overcurrent Element (Maximum Phase) Logic Outputs

    I , if the Torque Control Switch is closed. is also routed to the curve timing/reset timing functions. The Relay Word bit logic outputs operate as follows with the Torque Control Switch closed: SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 103 Input IN105 deasserted (51PTC = IN105 = logical 0): The Torque Control Switch opens and phase time-overcurrent element 51PT is defeated and nonoperational, regardless of any other setting. Input IN105 asserted (51PTC = IN105 = logical 1): Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 104: Residual Ground Time-Overcurrent Element

    To understand the operation of Figure 3.25, follow the explanation given for Figure 3.24, substituting residual ground current I = 3I Time-Overcurrent for maximum phase current I and substituting like settings and Relay Element Word bits. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 105: Table 3.11 Residual Ground Time-Overcurrent Element Settings

    ±0.01 A secondary and ±3% of setting (1 A nominal phase current inputs, IA, IB, IC) Curve Timing ±1.50 cycles and ± 4% of curve time for currents between (and including) 2 and 30 multiples of pickup Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 106: Negative-Sequence Time-Overcurrent Element

    1 control setting control equation torque control settings (e.g., 51QTC) cannot be set directly to OGIC logical 0. Section 9: Setting the Relay for additional time-overcurrent element setting information. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 107 ±0.01 A secondary and ±3% of setting (1 A nominal phase current inputs, IA, IB, IC) Curve Timing ±1.50 cycles and ±4% of curve time for currents between (and including) 2 and 30 multiples of pickup Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 108: Voltage Elements

    3.40 Distance, Out-of-Step, Overcurrent, Voltage, Synchronism Check, and Frequency Elements Voltage Elements Voltage Elements Enable SEL-311C voltage elements by making the enable setting: EVOLT = Y Voltage Values Voltage elements operate from the voltage values shown in Table 3.13. Table 3.13 Voltage Values Used by Voltage Elements...

  • Page 109: Figure 3.27 Single-Phase And Three-Phase Voltage Elements

    59SP OFF, 0.00–150.00 V secondary Accuracy ± Pickup 1 V and ±5% of setting Transient Overreach <5% of setting Relay Word Settings/ Bits Voltages 3P27 3P59 Figure 3.27 Single-Phase and Three-Phase Voltage Elements Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 110: Voltage Element Operation

    . The logic outputs in Figure 3.27 the following Relay Word bits: 27A = 1 (logical 1), if V < pickup setting 27P ≥ pickup setting 27P 27A = 0 (logical 0), if V SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 111 (59A = 1, 59B = 1, and 59C = 1) 3P59 = 0 (logical 0), if at least one of the Relay Word bits 59A, 59B, or 59C is deasserted (e.g., 59A = 0) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 112: Synchronism Check Elements

    3.31. The angle difference is compensated by breaker close time, and the breaker is ideally closed at a zero degree phase angle difference, to minimize system shock. These synchronism check elements are explained in detail in the following text. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 113: Synchronism Check Elements Settings

    Table 9.5 Table 9.6 Accuracy ± Voltage Pickup 1 V and ±5% of setting Voltage Transient Overreach <5% of setting ± Slip Pickup 0.003 Hz ± Angle Pickup 4° Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 114: Figure 3.30 Synchronism Check Voltage Window And Slip Frequency Elements

    Slip Frequency Frequency absolute Element Frequency value Calculator Setting Max. Slip Freq. 25SF q See bottom of 3.31; w to Figure Figure 3.31. Figure 3.30 Synchronism Check Voltage Window and Slip Frequency Elements SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 115 Synchronism Check Element 2 — 25A2 Max. Angle 2 25ANG2 Angle Difference Increasing Last check of setting 79CLS OGIC (see w) q From Figure 3.30; w Figure 6.1. Figure 3.31 Synchronism Check Elements Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 116: Synchronism Check Elements Voltage Inputs

    Phase input voltage (V , or V ), designated by setting SYNCP (e.g., if SYNCP = VB, then V Synchronism check voltage, from SEL-311C rear-panel voltage input VS For example, if V is designated as phase input voltage V (setting SYNCP = VB), then rear-panel voltage input VS is connected to B-phase on the other side of the circuit breaker.
  • Page 117 In a time period of one second, the angular distance between voltage V voltage V changes by 0.10 slip cycles, which translates into: 0.10 slip cycles/second • (360°/slip cycle) • 1 second = 36° Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 118 The Angle Difference Calculator calculates the angle difference between voltages V and V Angle Difference = |(∠V – ∠V Voltages V and V Are “Slipping” Refer to bottom of Figure 3.31. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 119: Figure 3.32 Angle Difference Between V

    Angle Difference between voltages V and V , compensated with the breaker close time: – ∠V Angle Difference = |(∠V ) + [(f – f ) • TCLOSD • (1 second/60 cycles) • (360°/slip cycle)]| Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 120 Thus, synchronism check elements 25A1 or 25A2 assert to logical 1 if the Angle Difference is less than corresponding maximum angle setting 25ANG1 or 25ANG2. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 121 “instant” timer 79CLSD is going to time out (or making the single check). It drops the requirement of waiting until the decreasing Angle Difference (V * approaching V ) brings V * in phase Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 122: Synchronism Check Applications For Automatic Reclosing And Manual Closing

    (25 degrees) than for an automatic reclose (15 degrees). A single output contact (e.g., OUT102 = CLOSE) can provide the close function for both automatic reclosing and manual closing (see Figure 6.1 logic output). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 123: Frequency Elements

    VA–N, VS, and positive-sequence current. Frequency Element Setting 27B81P Settings Voltages Wye/Delta to Frequency Element Logic (q) Relay Word 27B81 q To Figure 3.34. Figure 3.33 Undervoltage Block for Frequency Elements Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 124: Figure 3.34 Levels 1 Through 6 Frequency Elements

    Frequency Element 6 81D6T 81D6P ≥ NFREQ (Setting E81 = 6) 81D6P < NFREQ Underfrequency * 81D1–81D6 are for testing purposes only q From Figure 3.33. Figure 3.34 Levels 1 Through 6 Frequency Elements SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 125: Table 3.16 Frequency Elements Settings And Settings Ranges

    With these settings: 81D1P ≥ NFREQ The overfrequency part of frequency element 1 logic is enabled. 81D1 and 81D1T operate as overfrequency elements. 81D1 is used in testing only. Underfrequency Element For example, make settings: Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 126: Frequency Element Operation

    (Relay Word bit 27B81). Relay Word bit 27B81 asserts to logical 1 and blocks the frequency element operation if any voltage (V , or V goes below voltage pickup 27B81P. This control prevents erroneous frequency element operation following fault inception. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 127: Frequency Element Uses

    (Relay Word bits 81D1T–81D6T) do not have to be used. Frequency The instantaneous frequency elements (81D1–81D6) are used in testing only. Element Uses The time-delayed frequency elements (81D1T–81D6T) are used for underfrequency load shedding, frequency restoration, and other schemes. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 128 This page intentionally left blank...

  • Page 129: Section 4: Loss-Of-Potential, Ccvt Transient Detection, Load-Encroachment, And Directional Element Logic

    LOP = logical 0) when all three of the phase voltages return above 40 V secondary, V is less than 5 V secondary, and V is less than 15 percent of V Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 130: Setting Elop = Y Or Y1

    (Relay Word bit LOP asserts to logical 1), overcurrent elements set direction forward are enabled (see Figure 4.12). These direction forward overcurrent elements effectively become nondirectional and provide overcurrent protection during a loss-of-potential condition. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 131: Setting Elop = N

    LOP asserts to logical 1 for a loss-of-potential condition) but does not disable any voltage-polarized directional elements or any distance elements (as occurs with ELOP = Y or Y1), nor does it enable overcurrent elements set direction forward (as occurs with ELOP = Y). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 132: Ccvt Transient Detection Logic

    User settings are not required. The relay automatically adapts to different system SIR conditions by monitoring voltage and current. For close-in faults on systems with high SIRs, the SEL-311C uses distance- calculation smoothness detection to override the tripping delay caused by low voltage and low current.

  • Page 133: Load-Encroachment Logic

    A positive-sequence impedance calculation (Z ) is made in the load- encroachment logic in Figure 4.3. Load is largely a balanced condition, so apparent positive-sequence impedance is a good load measure. The load- Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 134: Settings Ranges

    267 MVA • (1/132.8 kV) • (1000 kV/MV) = 2010 A primary d. 2010 A primary • (1/CT ratio) = 2010 A primary • (1 A secondary/400 A primary) = 5.03 A secondary e. 132.8 kV • (1000 V/kV) = 132800 V primary SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 135 (0.95) = 180° – 18° = 162° –1 Setting NLAR = 180° + cos (0.80) = 180° + 37° = 217° Apply Load-Encroachment Logic to a Phase Time-Overcurrent Again, from Figure 4.3: ZLOAD = ZLOUT + ZLIN Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 136: Use Sel-321 Relay Application Guide For The Sel-311C

    !ZLOAD = !(logical 0) = NOT(logical 0) = logical 1 51PTC = Use SEL-321 Relay The load-encroachment logic and settings in the SEL-311C are the same as those in the SEL-321. Refer to Application Guide 93-10: SEL-321 Relay Application Guide...

  • Page 137: Directional Control For Ground Distance And Residual Ground Overcurrent Elements

    The order in which these directional elements are listed in setting ORDER determines the priority in which they operate to provide Best Choice Ground Directional™ logic control. See discussion on setting ORDER in Directional Control Settings. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 138: Directional Element Enables

    The directional element outputs are routed to the forward (Relay Word bit 32GF) and reverse (Relay Word bit 32GR) logic points. Loss-of-Potential Note in Figure 4.12 that if all the following are true: SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 139: Figure 4.6 Internal Enables (32Qe And 32Qge) Logic

    From Figure 4.7; w to Figure 4.9; e to Figure 4.14; r to Figure 4.8; t to Figure 4.9. Figure 4.6 Internal Enables (32QE and 32QGE) Logic for Negative-Sequence Voltage-Polarized Directional Elements Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 140: Figure 4.7 Internal Enables (32Ve And 32Ie) Logic For Zero-Sequence

    To 4.10; w to 4.11; e to 4.6; r to Figure Figure Figure Figure 4.8. Figure 4.7 Internal Enables (32VE and 32IE) Logic for Zero-Sequence Voltage-Polarized and Channel IP Current-Polarized Directional Elements SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 141: Figure 4.8 Best Choice Ground Directional Logic

    3 internal enable asserted? 32QGE 32VE 32IE q From 4.6; w from 4.7; e 4.9; r 4.10; t Figure Figure Figure Figure Figure 4.11. Figure 4.8 Best Choice Ground Directional Logic Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 142: Figure 4.9 Negative-Sequence Voltage-Polarized Directional Element For Ground Distance And Residual Ground Overcurrent Elements

    Note: 1 ∠ Z1L = One ohm at the positive-sequence line angle. q From Figure 4.6; w from Figure 4.1; e from Figure 4.8; r to Figure 4.12. Figure 4.9 Negative-Sequence Voltage-Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 143: Figure 4.10 Zero-Sequence Voltage-Polarized Directional Element For Ground Distance And Residual Ground Overcurrent Elements

    Note: 1 ∠ Z1L = One ohm at the zero-sequence line angle. q From 4.7; w from 4.1; e from 4.8; r to Figure Figure Figure Figure 4.12. Figure 4.10 Zero-Sequence Voltage-Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 144: Figure 4.11 Channel Ip Current-Polarized Directional Element For Ground Distance And Residual Ground Overcurrent Elements

    4.1; w from Figure 4.7; e from Figure 4.9; r from Figure 4.10; t from Figure 4.11; y to Figure 3.7–Figure 3.12 Figure 3.22. Figure 4.12 Ground Distance and Residual Ground Directional Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 145: Directional Control For Phase Distance And Negative-Sequence Elements

    Note in Figure 4.15 that the assertion of ZLOAD disables the positive- sequence voltage-polarized directional element. ZLOAD asserts when the relay is operating in a user-defined load region (see Figure 4.3). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 146: Directional Element Routing

    Refer to Figure 4.1 and accompanying text for more information on loss-of- potential. As shown in Figure 3.4–Figure 3.6, ILOP also disables all phase and ground distance elements. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 147: Figure 4.14 Negative-Sequence Voltage-Polarized Directional Element For Phase Distance And Negative-Sequence Elements

    If Z2R Setting < 0, Reverse Threshold = 1.25 • Z2R + 0.25 • q From Figure 4.1; w to Figure 3.4, Figure 3.5, Figure 3.6, and Figure 3.23. Figure 4.14 Negative-Sequence Voltage-Polarized Directional Element for Phase Distance and Negative-Sequence Elements Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 148: Figure 4.15 Positive-Sequence Voltage Polarized Directional Element For Phase Distance Elements

    —I —I —I 0.1 •INOM q From 4.3; w from 4.1; e to Figure Figure Figure 3.4, Figure 3.5, and Figure 3.6. Figure 4.15 Positive-Sequence Voltage Polarized Directional Element for Phase Distance Elements SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 149: Directional Control Settings

    3.16) Z1GT (Figure 3.16) 67G1T (Figure 3.22) 67Q1T (Figure 3.23) Forward (Figure 3.5) (Figure 3.8) 67G2 (Figure 3.22) 67Q2 (Figure 3.23) M2PT (Figure 3.16) Z2GT (Figure 3.16) 67G2T (Figure 3.22) 67Q2T (Figure 3.23) Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 150 ORDER = IQV, ORDER = QVI, ORDER = IV, ORDER = VQ, ORDER = I, ORDER = Q). If ground quadrilateral distance elements are used, the first entry in the ORDER setting should be as shown in Table 4.3. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 151: Table 4.3 First Entry In Order Setting If Ground Quadrilateral Distance Elements Are Used

    50QR of the negative-sequence voltage-polarized directional elements (see Figure 4.6). Ideally, the setting is above normal load unbalance and below the lowest expected negative-sequence current magnitude for unbalanced reverse faults. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 152 4.9) to be enabled: > • Equation 4.1 This check assures that the relay uses the most robust analog quantities in making directional decisions for the ground distance and residual ground overcurrent elements. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 153 50GR of the zero-sequence voltage-polarized and channel IP current- polarized directional elements (see Figure 4.7). Ideally, the setting is above normal load unbalance and below the lowest expected zero-sequence current magnitude for unbalanced reverse faults. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 154 Z0F and Z0R are not made or displayed. Z0F and Z0R are used to calculate the Forward and Reverse Thresholds, respectively, for the zero-sequence voltage-polarized directional elements (see Figure 4.10). SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 155 SEL-311C: (52a connected to optoisolated input IN106) E32IV = IN106 Almost any desired control can be set in SEL control equation setting OGIC E32IV. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 156: Overcurrent Directional Control Provided By Torque Control Settings

    67Q3/67Q3T DIR 3 = F or R and Torque Control 67Q4TC 67Q4/67Q4T DIR 4 = F or R and Torque Control 51PTC 51P/51PT Torque Control 51GTC 51G/51GT Torque Control 51QTC 51Q/51QT Torque Control SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 157 (setting TRSOTF) trip logic. Note in Figure 5.1 that setting TR is unsupervised. Any element that asserts in setting TR will cause Relay Word bit TRIP to assert to logical 1. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 158: Section 5: Trip And Target Logic Trip Logic

    Seal-in OGIC Setting Unlatch ULTR Logic {TARGET RESET} Pushbutton q From Figure 5.7; w from Figure 5.6; e from Figure 5.11; r from Figure 5.14; t from Figure 5.3. Figure 5.1 Trip Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 159: Set Trip

    Command. More discussion follows later on the factory settings for setting If a user wants to supervise the OPEN command with optoisolated input IN105, the following setting is made: TR = … + OC * IN105 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 160: Unlatch Trip

    ULTR = !(50L + 51G) (unlatch trip conditions) The factory setting for the Minimum Trip Duration Timer setting is: TDURD = 9.000 cycles See the settings sheets in Section 9: Setting the Relay for setting ranges. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 161: Additional Settings Examples

    Unlatch Trip With 52b Circuit Breaker Auxiliary Contact A 52b circuit breaker auxiliary contact is wired to optoisolated input IN101. 52A = !IN101 (SEL control equation circuit breaker status setting—see OGIC Optoisolated Inputs) ULTR = !52A Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 162: Program An Output Contact For Tripping

    TRIP Relay Word bit. Examples of uses for additional TRIP output contacts: ➤ Keying an external breaker failure relay ➤ Keying communications equipment in a Direct Transfer Trip scheme Output Contacts on page 7.32 for more information on programming output contacts. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 163: Switch-Onto-Fault Trip Logic

    CLMON Rising Edge Detect (SEL Setting) OGIC q To Figure 5.6; w to Figure 4.1; e to Figure 5.1; r to Figure 4.2. Figure 5.3 Three-Pole Open Logic (Top) and Switch-Onto-Fault Logic (Bottom) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 164: Three-Pole Open Logic

    (circuit breaker closed) Determining Three-Pole Open Condition Without Circuit Breaker Auxiliary Contact (OPO = 52) If a circuit breaker auxiliary contact is not connected to the SEL-311C and OPO = 52, SEL control equation setting 52A may be set: OGIC...

  • Page 165: Close Bus Operated Switch-Onto-Fault Logic

    Circuit breaker closure is detected by monitoring the dc close bus. This is accomplished by wiring an optoisolated input on the SEL-311C (e.g., IN105) to the dc close bus. When a manual close or automatic reclosure occurs, optoisolated input IN105 is energized.

  • Page 166: Communications-Assisted Trip Logic-General Overview

    Trip and Target Logic Communications-Assisted Trip Logic-General Overview Communications-Assisted Trip Logic-General Overview The SEL-311C includes communications-assisted tripping schemes that provide unit-protection for transmission lines with the help of communications. No external coordination devices are required. Zone 1 (1) Zone 3 (1)

  • Page 167: Trip Setting Trcomm

    (e.g., Level 2 definite-time overcurrent elements). Trip Setting DTT The DTT and DUTT tripping schemes are realized with SEL control OGIC equation trip setting DTT, discussed at the beginning of this section. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 168: Use Existing Sel-321 Relay Application Guides For The Sel-311C Relay

    The communications-assisted tripping schemes settings in the SEL-311C are very similar to those in the SEL-321 Relay. Existing SEL-321 application Relay Application guides can also be used in setting up these schemes in the SEL-311C. The Guides for the following application guides are available from SEL:...

  • Page 169: Permissive Overreaching Transfer Trip Logic

    PT1—Received Permissive Trip Signal(s) In two-terminal line POTT applications, a permissive trip signal is received from one remote terminal. One optoisolated input on the SEL-311C (e.g., input IN104) is driven by a communications equipment receiver output (see Figure 5.8). Make SEL...

  • Page 170: Timer Settings

    DCUB logic in Figure 5.10). ECTT—Echo Conversion to Trip PT received, converted to a trip condition for a Weak-Infeed Condition (operates as an input into the trip logic in Figure 5.1). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 171: Weak-Infeed Logic And Settings

    SEL-311C Weak-Infeed Enable the weak-infeed logic by setting EWFC = Y. Logic The SEL-311C provides additional logic (see Figure 5.6) for weak-infeed terminals to permit rapid tripping of both line terminals for internal faults near the weak terminal.

  • Page 172: Figure 5.6 Pott Logic

    Figure 3.6; e from Figure 3.9; r from Figure 3.22; t from Figure 3.23; y from Figure 5.3; u from 5.5; i from 5.1; o Figure Figure Figure 5.1. Figure 5.6 POTT Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 173: Installation Variations

    Depending on the installation, perhaps one output contact (e.g., OUT105 = KEY) could be connected in parallel to both transmitter inputs (TX) on the communications equipment in Figure 5.9. Then output contact OUT107 can be used for another function. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 174: Figure 5.8 Sel-311C Connections To Communications Equipment For A Two-Terminal Line Pott Scheme

    OUT105 (partial) IN104 OUT105 = KEY PT1 = IN104 to/from remote terminal (—) Figure 5.8 SEL-311C Connections to Communications Equipment for a Two-Terminal Line POTT Scheme SEL-311C OUT105 OUT107 (partial) IN104 IN106 OUT105 = KEY PT1 = IN104 * IN106...

  • Page 175: Directional Comparison Unblocking Logic

    PT1, PT2—Received Permissive Trip Signal(s) In two-terminal line DCUB applications (setting ECOMM = DCUB1), a permissive trip signal is received from one remote terminal. One optoisolated input on the SEL-311C (e.g., input IN104) is driven by a communications equipment receiver output (see Figure 5.12).

  • Page 176: Timer Settings

    LOG1, LOG2—Loss-of-Guard Signal(s) In two-terminal line DCUB applications (setting ECOMM = DCUB1), a loss- of-guard signal is received from one remote terminal. One optoisolated input on the SEL-311C (e.g., input IN105) is driven by a communications equipment receiver output (see Figure 5.12).
  • Page 177 Relay Word bit UBB, depending on enable setting ECOMM = DCUB1 or DCUB2. Relay Word bit UBB is the unblock block input into the trip logic in Figure 5.1. When UBB asserts to logical 1, tripping is blocked. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 178: Figure 5.10 Dcub Logic

    5.22 Trip and Target Logic Directional Comparison Unblocking Logic q To Figure 5.11; w to Figure 5.7. Figure 5.10 DCUB Logic SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 179: Installation Variations

    PT1 = IN104 OUT105 = KEY LOG1 = IN105 to/from TRIP GUARD remote (RX) (RX) terminal (—) Figure 5.12 SEL-311C Connections to Communications Equipment for a Two-Terminal Line DCUB Scheme (Setting ECOMM = DCUB1) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 180: Figure 5.13 Sel-311C Connections To Communications Equipment For A Three-Terminal Line Dcub Scheme (Setting Ecomm = Dcub2)

    TRIP GUARD TRIP GUARD remote remote (RX) (RX) (RX) (RX) terminal 1 terminal 2 (—) Figure 5.13 SEL-311C Connections to Communications Equipment for a Three-Terminal Line DCUB Scheme (Setting ECOMM = DCUB2) SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 181: Directional Comparison Blocking Logic

    BT—Received Block Trip Signal(s) In two-terminal line DCB applications, a block trip signal is received from one remote terminal. One optoisolated input on the SEL-311C (e.g., input IN104) is driven by a communications equipment receiver output (see Figure 5.15). Make SEL...

  • Page 182: Logic Outputs

    In a three-terminal line scheme, output contact OUT106 is set the same as OUT104 (see Figure 5.16): OUT106 = DSTRT + NSTRT STOP—Stop Carrier Program to an output contact to stop carrier. For example, SEL control OGIC equation setting OUT106 is set: OUT106 = STOP SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 183 The received block trip input (e.g., BT = IN104) is routed through a dropout timer (BTXD) in the DCB logic in Figure 5.14. The timer output (BTX) is routed to the trip logic in Figure 5.1. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 184: Installation Variations

    OUT104, OUT105, OUT106, and OUT107 Figure 5.16 connected to separate communications equipment, for the two remote Variations terminals. Both output contact pairs are programmed the same DSTRT + NSTRT and OUT104 = DSTRT + NSTRT OUT106 = SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 185: Figure 5.15 Sel-311C Connections To Communications Equipment For A Two-Terminal Line Dcb Scheme

    RX (receive) output Figure 5.16 contacts from each remote terminal connected to separate inputs IN104 and IN106 on the SEL-311C. The inputs operate as block trip receive inputs for the two remote terminals and are used in the SEL control equation setting:...

  • Page 186: Figure 5.16 Sel-311C Connections To Communications Equipment For A Three-Terminal Line Dcb Scheme

    85CO remote remote START STOP (RX) START STOP (RX) terminal 1 terminal 2 (TX) (TX) (TX) (TX) (—) Figure 5.16 SEL-311C Connections to Communications Equipment for a Three-Terminal Line DCB Scheme SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 187: Front-Panel Target Leds

    Trip and Target Logic 5.31 Front-Panel Target LEDs Front-Panel Target LEDs Table 5.1 SEL-311C Front-Panel Target LED Definitions Definition Number Label Relay Enabled—see Relay Self-Tests on page 13.58. TRIP Indication that a trip occurred, by a protection or control element...
  • Page 188 TRSOTF and associated switch-onto-fault trip logic (see Figure 5.3). 79 Target LEDs If the reclosing relay is turned off (enable setting E79 = N or 79OI1 = 0), all the Device 79 (reclosing relay) target LEDs are extinguished. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 189: Target Reset/Lamp Test} Front-Panel Pushbutton

    (see Rotating Default Display (Only on Models With LCD) on page 7.36 Rotating Default Display on page 11.12): SV8 = (SV8 + SV7T) * !TRGTR DP3 = SV8 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 190: Figure 5.17 Seal-In Of Breaker Failure Occurrence For Message Display

    {TARGET RESET} pushbutton (Relay Word bit TRGTR pulses to logical 1, unlatching SV8 and in turn deasserting DP3). Thus, front-panel rotating default displays can be easily reset along with the front-panel targets by pushing the {TARGET RESET} pushbutton. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 191: Section 6: Close And Reclose Logic

    (e.g., manual close initiation via serial port or optoisolated inputs). If automatic reclosing is not needed, but the SEL-311C Relay is to close the circuit breaker for other close conditions (e.g., manual close initiation via serial port or optoisolated inputs), then this subsection is the only subsection OGIC ®...

  • Page 192: Close Logic

    A reclosing relay open interval times out (qualified by control equation setting 79CLS—see Figure 6.2). OGIC ➤ Or SEL control equation setting CL goes from logical 0 to OGIC logical 1 (rising edge transition). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 193: Unlatch Close

    ULCL is usually set with the TRIP Relay OGIC Word bit. This prevents the CLOSE Relay Word bit from being asserted any time the TRIP Relay Word bit is asserted (TRIP takes priority). See Trip Logic on page 5.1. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 194: Defeat The Close Logic

    Figure 6.1 is routed to output contact OUT103 with the following SEL control equation: OGIC Contact for Closing OUT103 = CLOSE Output Contacts on page 7.32 for more information on programming output contacts. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 195: Reclose Supervision Logic

    79CLS, to assert to logical 1) processing interval if Reclose Supervision Limit Timer times out Reclose Initiate 79RI (drives reclosing relay to lockout) q To Figure 6.1. Figure 6.2 Reclose Supervision Logic (Following Open Interval Time-Out) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 196: Settings And General Operation

    Reclosing Relay (See Table 6.2 and Table 6.3) on page SET.12 for setting ranges. For Most Applications (Top of Figure 6.2) For most applications, the Reclose Supervision Limit Time setting should be set to zero cycles: 79CLSD = 0.00 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 197 The reclose initiation condition (79RI) is not making a rising edge (logical 0 to logical 1) transition. ➤ The Reclose Supervision Limit Timer is not timed out (Relay Word bit RCSF = logical 0). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 198: Settings Example 1

    6.4. Settings Example 1 SEL-311C relays are installed at both ends of a transmission line in a high- speed reclose scheme. After both circuit breakers open for a transmission line fault, the SEL-311C(1) Relay recloses circuit breaker 52/1 first, followed by the SEL-311C(2) Relay reclosing circuit breaker 52/2, after a synchronism check across circuit breaker 52/2.

  • Page 199: Figure 6.4 Sel-311C Relays Installed At Both Ends Of A Transmission Line In A High-Speed Reclose Scheme

    (numeral 0) The SEL-311C(2) starts open interval timing after circuit breaker 52/1 at the remote end has reenergized the line. The SEL-311C(2) has to see Bus 2 hot, transmission line hot, and in synchronism across open circuit breaker 52/2 for...

  • Page 200: Additional Settings Example 2

    So that this possible momentary assertion of synchronism check element 25A1 does not cause any inadvertent reclose of circuit breaker 52/2, make sure the open interval timers in the SEL-311C(2) are set with some appreciable time greater than the momentary energization time of the faulted transmission line.

  • Page 201: Reclosing Relay

    Relay States and General Operation Reset State The circuit breaker has been closed for a qualifying reset time. The SEL-311C is ready to go through an automatic reclosing sequence in the reclose cycle state if the circuit breaker trips open and reclose initiation is successful.

  • Page 202: Table 6.1 Relay Word Bit And Front-Panel Correspondence To Reclosing Relay States

    Relay Word bit OC asserts for execution of the OPE command. See Command (Open Breaker) on page 10.36 for more information on the OPE command. Also, see Drive-to-Lockout and Drive-to-Last Shot Settings (79DTL and 79DLS, Respectively). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 203: Reclosing Relay States After A Settings Or Setting Group Change

    For example, if 52A = IN101, a 52a circuit breaker auxiliary contact is connected to input IN101. If the reclosing relay does not exist, the close logic still operates, allowing closing to take place via SEL control equation OGIC Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 204: Reclosing Relay Timer Settings

    2 time setting, 79OI2, starts timing. If the subsequent second reclosure is not successful, the relay goes to the Lockout State. See the example time line in Figure 6.6. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 205: Figure 6.6 Reclosing Sequence From Reset To Lockout With Example Settings

    52A.) OGIC Setting 79RSD Qualifies closures when the relay is in the Reclose Cycle State. These closures are usually automatic reclosures resulting from open interval time-out. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 206: Reclosing Relay Shot Counter

    (see Determination of Number of Reclosures (Last Shot) on page 6.15). The shot counter resets back to shot = 0 when the reclosing relay returns to the Reset State. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 207: Reclosing Relay Sel Ogic Control Equation Settings Overview

    52A + 79CY Relay Word bit is at logical 1 (52A = logical 1, or 79CY = logical 1). Input IN101 is assigned as the breaker status input in the factory settings (52A = IN101). Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 208 SEL-311C to successfully initiate reclosing and start timing on the first open interval. The SEL-311C is not yet in the reclose cycle state (79CY = logical 0) at the instant of the first trip.

  • Page 209: Drive-To-Lockout And Drive-To-Last Shot Settings (79Dtl And 79Dls, Respectively)

    6.18). Then the drive-to-lockout condition overlaps reclose initiation and the SEL-311C stays in lockout after the breaker trips open. When 79DLS = logical 1, the reclosing relay goes to the last shot, if the shot counter is not at a shot value greater than or equal to the calculated last shot...
  • Page 210 !IN102 + ... = NOT(IN102) + ... = NOT(logical 0) + ... = logical 1 79DTL = To disable reclosing, but not drive the relay to the Lockout State until the relay trips, make settings similar to the following: 79DTL = !IN102 * TRIP + ... SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 211: Skip Shot And Stall Open Interval Timing Settings (79Skp And 79Stl, Respectively)

    Monitoring Open Interval and Reset Timing on page 6.16). Settings Example The skip shot function is not enabled in the example settings: 79SKP = 0 (numeral 0) The stall open interval timing setting is: 79STL = TRIP Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 212: Table 6.6 Open Interval Time Settings Example

    79SKP = logical 0, regardless of Relay Word bit 50P2. Additional Settings Example 2 If the SEL-311C is used on a line serving an independent power producer (cogenerator), the utility should not reclose into a line still energized by an islanded generator.

  • Page 213: Block Reset Timing Setting (79Brs)

    If the reset timer is timing and then 79BRS asserts to: 79BRS = logical 1 reset timing is stopped and does not begin timing again until 79BRS deasserts 79BRS = logical 0 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 214: Sequence Coordination Setting (79Seq)

    Sequence The 79SEQ setting is applicable to distribution applications; for transmission system applications set 79SEQ = 0. See the SEL-351 Instruction Manual for a Coordination description of setting 79SEQ. Setting (79SEQ) SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 215 Relay Word bits and SEL control equation setting examples are used OGIC throughout this section. See Section 9: Setting the Relay for more information on Relay Word bits and SEL control equation settings. See Section 10: OGIC Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 216: Section 7: Inputs, Outputs, Timers, And Other Control Logic Overview

    Inputs, Outputs, Timers, and Other Control Logic Overview Serial Port Communications and Commands for more information on viewing and making SEL control equation settings (commands SHO L and OGIC SET L). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 217: Optoisolated Inputs

    Figure 7.2 show the resultant Relay Word bits that follow corresponding optoisolated inputs for the different SEL-311C Relay models. The figures show examples of energized and de-energized optoisolated inputs and corresponding Relay Word bit states. To assert an input, apply rated control voltage to the appropriate terminal pair (see Figure 1.2...

  • Page 218: Input Debounce Timers

    OGIC the output of the timer for input functions (see Figure 7.24 Figure 7.25). Input Functions There are no optoisolated input settings such as: IN101 = IN102 = SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 219: Settings Example 1

    !IN102 + ... = NOT(IN102) + ... = NOT(logical 0) +... = logical 1 When the reclose enable switch is closed, input IN102 is energized and the reclosing relay is enabled, if no other setting condition is driving the reclosing relay to lockout: Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 220 SEL OGIC control equation setting 79DTL. The pickup/dropout timer for input IN102 (IN102D) in this example might be set at: IN102D = 1.00 cycle to provide input energization/de-energization debounce. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 221: Local Control Switches

    Relay Word bit LBn (n = 1–16), called a local bit. The local control switch logic in Figure 7.4 NOTE: On SEL-311C relays without an repeats for each local bit LB1–LB16. Use these local bits in SEL control OGIC LCD, the Relay Word bits LB1–LB16 are...

  • Page 222: Table 7.2 Correspondence Between Local Control Switch Types And Required Label Settings

    Disable local control switches by “nulling out” all the label settings for that switch (see Section 9: Setting the Relay). The local bit associated with this disabled local control switch is then fixed at logical 0. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 223: Settings Examples

    CL = . . . + LB4 + . . . control equation setting CL is for close conditions, other than OGIC automatic reclosing or serial port CLOSE command (see Figure 6.1). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 224: Additional Local Control Switch Application Ideas

    0, regardless of the local bit state before the settings change. If a local control switch is made newly operable because of a settings change (i.e., the corresponding label settings are set), the corresponding local bit starts out at logical 0. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 225: Remote Control Switches

    ON Active Setting Group position (corresponding remote bit is still asserted to logical 1) after the Changed change. If a remote control switch is in the OFF position (corresponding Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 226 0) after the change. If settings are changed for a setting group other than the active setting group, there is no interruption of the remote bits (the relay is not momentarily disabled). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 227: Latch Control Switches

    The latch control switch feature of this relay replaces latching relays. Traditional latching relays maintain their output contact state when set. The SEL-311C latch bit retains memory even when control power is lost. If the latch bit is set to a programmable output contact and control power is lost, the state of the latch bit is stored in nonvolatile memory but the output contact will go to its de-energized state.

  • Page 228: Latch Control Switch Application Ideas

    SEL-311C. Reclosing Relay Use a latch control switch to enable/disable the reclosing relay in the SEL-311C. In this example, a SCADA contact is connected to optoisolated Enable/Disable input IN104. Each pulse of the SCADA contact changes the state of the Setting Example reclosing relay.
  • Page 229 LT1 deasserts back to logical 0 again. Thus each individual assertion of input IN104 (Pulse 1, Pulse 2, Pulse 3, and Pulse 4 in Figure 7.15) changes the state of the latch control switch just once. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 230: Latch Control Switch States Retained

    If individual settings are changed (for the active setting group or one of the other setting groups) or the active setting group is changed, the states of the latch bits (Relay Word bits LT1–LT16) are retained, much like in the Power Loss on page 7.16 explanation. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 231: Reset Latch Bits For Active Setting Group Change

    LTn be set with care. Settings SETn and RSTn cannot result in continuous cyclical operation of latch bit LTn. Use timers to qualify conditions set in settings SETn and RSTn. If any optoisolated inputs IN101– Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 232: Figure 7.17 Latch Control Switch (With Time Delay Feedback) Controlled By A Single Input To Enable/Disable Reclosing

    SV6 = LT1 SV6DO SV6PU SV6T SET1 = /IN104 * !SV6T No Effect Processing Interval RST1 = /IN104 * SV6T No Effect Figure 7.18 Latch Control Switch (With Time Delay Feedback) Operation Time Line SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 233: Multiple Setting Groups

    (or remain in) setting Group 4 go to (or remain in) setting Group 5 go to (or remain in) setting Group 6 The operation of these settings is explained with an example. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 234: Operation Of Settings Ss1-Ss6

    OGIC Active Setting Group Use a single optoisolated input to switch between two setting groups in the SEL-311C. In this example, optoisolated input IN105 on the relay is connected Switching Example 1 to a SCADA contact in Figure 7.19.

  • Page 235: Table 7.6 Sel Ogic Control Equation Settings For Switching Active Setting Group Between Setting Groups 1 And

    SV8DO = 0 Setting Group 1 Activated Setting Group 4 Activated SV8 = SG1 SV8 = SG4 SV8T SV8PU SV8PU SV8T Figure 7.20 SEL Control Equation OGIC Variable Timer SV8T Used in Setting Group Switching Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 236 Group 1 after qualifying time setting TGR (perhaps set at a cycle or so to qualify the assertion of setting SS1). Optoisolated input IN105 also has its own built-in debounce timer, IN105D (see Figure 7.1). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 237: Active Setting Group Switching Example

    Group 6 The SEL-311C can be programmed to operate similarly. Use three optoisolated inputs to switch between the six setting groups in the SEL-311C. In this example, optoisolated inputs IN101, IN102, and IN103 on the relay are connected to a rotating selector switch in Figure 7.22.

  • Page 238: Figure 7.22 Rotating Selector Switch Connected To Inputs In101, In102, And In103 For Active Setting Group Switching

    TGR in order to change the active setting group to setting Group 4. For such a rotating selector switch application, qualifying time setting TGR is typically set at 180 to 300 cycles. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 239 With settings SS1 through SS6 all at logical 0, the serial port GROUP command or the front-panel {GROUP} pushbutton can be used to switch the active setting group from Group 5, in this example, to another desired setting group. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 240: Active Setting Group Retained

    If the individual settings change causes a change in one or more SEL OGIC control equation settings SS1–SS6, the active setting group can be changed, subject to the newly enabled SS1–SS6 settings. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 241: Make Active Setting Group Switching Settings With Care

    SS1–SS6 before changing the active setting group. If optoisolated inputs IN101–IN106 are used in settings SS1–SS6, the inputs have their own built-in debounce timer that can help in providing the necessary time qualification (see Figure 7.1). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 242: Sel Ogic Control Equation Variables/Timers

    Timer Input Word Settings Bits Settings Bits SV1PU SV4PU SV1T SV4T SV1D0 SV4D0 SV2PU SV5PU SV2T SV5T SV2D0 SV5D0 SV3PU SV6PU SV3T SV6T SV3D0 SV6D0 Figure 7.24 SEL Control Equation Variables/Timers SV1/SV1T–SV6/ OGIC SV6T SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 243: Settings Example 1

    Another application idea is dedicated breaker failure protection (see Figure 7.26): Settings Example 1 SV6 = IN101 (breaker failure initiate) SV7 = (SV7 + IN101) * (50P1 + 50G1) OUT101 = SV6T (retrip) OUT102 = SV7T (breaker failure trip) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 244: Figure 7.26 Dedicated Breaker Failure Scheme Created

    Setting Group Is of Relay Word bit SV7 (SEL control equation variable SV7) in SEL OGIC OGIC Changed control equation SV7: SV7 = (SV7 + IN101) * (50P1 + 50G1) SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 245 Relay Word bit SV7 being reset to logical 0 (assuming input IN101 is not asserted). Relay Word bit SV7T is also reset to logical 0, and timer settings SV7PU and SV7DO load up again. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 246: Output Contacts

    A b type output contact is closed when the output contact coil is de- energized and open when the output contact coil is energized. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 247 ALARM output contact coil states (energized or de-energized) and output contact types (a or b) are demonstrated. See Output Contact Jumpers on page 2.23 for output contact type options. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 248: Figure 7.27 Logic Flow For Example Output Contact Operation (Models 0311C00X And 0311C01X)

    Main board jumper JMP23 allows output contact OUT107 to operate as: regular output contact OUT107 (JMP23 in position 2–3), an extra ALARM output contact (JMP23 in position 1–2). See Table 2.3 for more information on jumper JMP23. Figure 7.27 Logic Flow for Example Output Contact Operation (Models 0311C00x and 0311C01x) SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 249: Figure 7.28 Logic Flow For Example Output Contact Operation-Extra I/O Board (Model 0311C01X)

    All 12 outputs are configurable as a or b type output contacts. See Figure 2.16 Figure 2.17 for more information on selecting output contact type. Figure 7.28 Logic Flow for Example Output Contact Operation—Extra I/O Board (Model 0311C01x) Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 250: Rotating Default Display (Only On Models With Lcd)

    Traditional Figure 7.29 shows traditional indicating panel lights wired in parallel with SEL-311C optoisolated inputs. Input IN101 provides circuit breaker status to Indicating Panel the relay, and input IN102 enables/disables reclosing in the relay via the Lights...

  • Page 251: General Operation Of Rotating Default Display Settings

    79 ENABLED BREAKER CLOSED (—) Figure 7.30 Rotating Default Display Replaces Traditional Panel Light Installations There are sixteen (16) of these default displays available in the SEL-311C. Each default display has two complementary screens (e.g., BREAKER CLOSED ) available. BREAKER OPEN General Operation of The display settings are enabled using the EDP setting.
  • Page 252 This results in the display of corresponding text setting DP2_1 on the front- panel display: BREAKER CLOSED Circuit Breaker Open 7.30, optoisolated input IN101 is de-energized when the 52a circuit Figure breaker auxiliary contact is open, resulting in: IN101 = logical 0 DP2 = SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 253: Additional Settings Examples

    OGIC equation display point setting directly to 0 (logical 0) or 1 (logical 1) and the corresponding text setting. For example, if an SEL-311C is protecting a 230 kV transmission line, labeled “Line 1204,” the line name can be continually displayed with the following settings:...

  • Page 254: Active Setting Group Switching Considerations

    7.30, optoisolated input IN102 is energized to enable the reclosing Figure relay, resulting in: DP1 = IN102 = logical 1 This results in the display of corresponding text setting DP1_1 on the front- panel display: 79 ENABLED SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 255: Additional Rotating Default Display Example

    51PP, 51GP, or 51QP. For example, with the factory default settings for 51PP and CTR, setting DP1_0 = ::51PP will display 1200.00 A pri Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 256: Displaying Time-Overcurrent Elements Example

    For additional format control for the setting elements only, use the following SET T control string: Dpi_j = XXX;;[;]ABCDE;YYY where: SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 257: Displaying Metering Quantities On The Rotating Default Display

    Quantities on the pushbuttons. The values shown in Table 7.11 can be set to automatically Rotating Default display on the rotating LCD screen. Display Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 258: Table 7.11 Mnemonic Settings For Metering On The Rotating Default Display

    IP peak current 3I2DEM 3 I 2 D 3I2 demand current 3I2PK 3 I 2 P 3I2 peak current MWADI M W A A demand megawatts in MWAPI M W A A peak megawatts in SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 259 Three-phase megawatt-hours in MWH3O M W h Three-phase megawatt-hours out MVRHAI M V A R A megavar-hours in MVRHAO M V A R A megavar-hours out MVRHBI M V A R B megavar-hours in Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 260: Displaying Metering Values Example

    Monitor Output pushbuttons. The values shown in Table 7.13 can be set to automatically Information on the display on the rotating LCD screen. Rotating Default Display SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 261: Displaying Breaker Monitor Outputs Example

    The DPn logic equation can be set to control the text display-turning it on and off under certain conditions. With the relay set as shown above, the LCD will show the following: Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 262 7.48 Inputs, Outputs, Timers, and Other Control Logic Rotating Default Display (Only on Models With LCD) EXT TRIPS=XXXXX CTRL TRIPS=XXXXX then, CTRL IA=XXXXXX kA EXT IA=XXXXXX kA and then, WEAR A= XXX % SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 263: Overview

    Section 8 Breaker Monitor and Metering Functions Overview The SEL-311C Relay monitoring functions include: ➤ Breaker Monitor on page 8.2 ➤ Station DC Battery Monitor on page 8.15 The SEL-311C metering functions include: ➤ Demand Metering on page 8.20 ➤...

  • Page 264: Breaker Monitor

    Breaker Monitor and Metering Functions Breaker Monitor Breaker Monitor The breaker monitor in the SEL-311C helps in scheduling circuit breaker maintenance. The breaker monitor is enabled with the enable setting: EBMON = Y The breaker monitor settings in Table 8.2...

  • Page 265: Figure 8.1 Plotted Breaker Maintenance Points For An Example Circuit Breaker

    Breaker Monitor and Metering Functions Breaker Monitor 10,000 1000 6 7 8 9 kA Interrupted per Operation Figure 8.1 Plotted Breaker Maintenance Points for an Example Circuit Breaker Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 266: Breaker Monitor Setting Example

    Each phase (A, B, and C) has its own breaker maintenance curve (like that in Figure 8.2), because the separate circuit breaker interrupting contacts for phases A, B, and C do not necessarily interrupt the same magnitude current (depending on fault type and loading). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 267: Figure 8.2 Sel-311C Breaker Maintenance Curve For An Example Circuit Breaker

    COSP3 = 12 6 7 8 9 kA Interrupted per Operation Figure 8.2 SEL-311C Breaker Maintenance Curve for an Example Circuit Breaker Figure 8.2, note that the breaker maintenance curve levels off horizontally to the left of set point KASP1, COSP1. This is the close/open operation limit of the circuit breaker (COSP1 = 10000), regardless of interrupted current value.

  • Page 268: Breaker Monitor Operation Example

    (e.g., Figure 8.5, 2.5 kA is interrupted 290 times). This is not realistic, but it helps in demonstrating the operation of the breaker maintenance curve and how it integrates for varying current levels. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 269 Monitor Information on page 8.12). Current and trip counts continue to be accumulated, until reset by the BRE R command. Additionally, logic outputs assert for alarm or other control applications—see the following discussion. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 270: Figure 8.4 Breaker Monitor Accumulates 10 Percent Wear

    Breaker Monitor and Metering Functions Breaker Monitor 100% 10,000 1000 6 7 8 9 kA Interrupted per Operation Figure 8.4 Breaker Monitor Accumulates 10 Percent Wear SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 271: Figure 8.5 Breaker Monitor Accumulates 25 Percent Wear

    Breaker Monitor and Metering Functions Breaker Monitor 100% 10,000 1000 6 7 8 9 kA Interrupted per Operation Figure 8.5 Breaker Monitor Accumulates 25 Percent Wear Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 272: Figure 8.6 Breaker Monitor Accumulates 50 Percent Wear

    8.10 Breaker Monitor and Metering Functions Breaker Monitor 100% 10,000 1000 6 7 8 9 kA Interrupted per Operation Figure 8.6 Breaker Monitor Accumulates 50 Percent Wear SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 273: Breaker Monitor Output

    When the breaker maintenance curve for a particular phase (A, B, or C) reaches the 100 percent wear level (see Figure 8.7), a corresponding Relay Monitor Output Word bit (BCWA, BCWB, or BCWC) asserts. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 274: View Or Reset Breaker Monitor Information

    Relay Word bit BCWA to deassert (BCWA = logical 0). Via Front Panel The information and reset functions available via the previously discussed serial port commands BRE and BRE R are also available via the front-panel {OTHER} pushbutton. See Figure 11.3. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 275: Determination Of Relay-Initiated Trips And Externally Initiated Trips

    IN106 is asserted. SEL-311C OUT101 IN106 CS/T = TRIP (Control Switch Trip) Other External Trip Bus Trips TRIP COIL (—) Figure 8.8 Input IN106 Connected to Trip Bus for Breaker Monitor Initiation Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 276 OGIC BKMON = IN106 then the SEL-311C breaker monitor sees all trips. If output contact OUT101 asserts, energizing the trip bus, the breaker monitor will deem it a relay-initiated trip. This is because when BKMON is newly asserted (input IN106 energized), the TRIP Relay Word bit is asserted.

  • Page 277: Station Dc Battery Monitor

    Station DC Battery Monitor Station DC Battery Monitor The station dc battery monitor in the SEL-311C can alarm for under- or overvoltage dc battery conditions and give a view of how much the station dc battery voltage dips when tripping, closing, and other dc control functions take place.
  • Page 278 OUT106 should logically deassert (according to bottom of Figure 8.10), and this is surely what happens for a total loss of power (all output contacts deassert on total loss of power). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 279: Additional Application

    12.3. Changes in station dc battery voltage for an event (e.g., circuit breaker tripping) can be observed. Use the EVE command to retrieve event reports as discussed in Section 12: Standard Event Reports and SER. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 280 When the trip bus is energized, any change in station dc battery voltage can be observed in column in the event report. Station DC Battery Voltage Dips During Circuit Breaker Closing To generate an event report when the SEL-311C closes the circuit breaker, make the SEL control equation event report generation setting: OGIC ER = /OUT102 + ...

  • Page 281: Operation Of Station Dc Battery Monitor When Ac Voltage Is Powering The Relay

    8.19 Station DC Battery Monitor Operation of Station If the SEL-311C has a 125/250 Vac/Vdc supply, it can be powered by ac voltage (85 to 264 Vac) connected to the rear-panel terminals labeled POWER. DC Battery Monitor When powering the relay with ac voltage, the dc voltage elements in When AC Voltage Is Figure 8.9...

  • Page 282: Demand Metering

    8.20 Breaker Monitor and Metering Functions Demand Metering Demand Metering The SEL-311C offers the choice between two types of demand metering, settable with the enable setting: EDEM = THM (Thermal Demand Meter) EDEM = ROL (Rolling Demand Meter) The demand metering settings (in Table 8.4) are available via the SET...

  • Page 283: Figure 8.11 Response Of Thermal And Rolling Demand Meters To A Step Input

    Thermal Demand Meter Response (EDEM = THM) The response of the thermal demand meter in Figure 8.11 (middle) to the step current input (top) is analogous to the parallel RC circuit in Figure 8.12. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 284: Figure 8.12 Current I S Applied To Parallel Rc Circuit

    (middle) is at 90 percent (0.9 per unit) of full applied value (1.0 per unit) after a time period equal to setting DMTC = 15 minutes, referenced to when the step current input is first applied. The SEL-311C updates thermal demand values approximately every two seconds. Rolling Demand Meter Response (EDEM = ROL) The response of the rolling demand meter in Figure 8.11...
  • Page 285 Rolling demand meter response at “Time = 10 minutes” = 2.0/3 = 0.67 per unit Time = 15 Minutes The 3 five-minute intervals in the sliding time-window at “Time = 15 minutes” each integrate into the following five-minute totals: Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 286: Demand Meter Settings

    (residual) Rolling (EDEM = ROL) Reset Demand Demand Function QDEMP QDEM 2(DEM) Thermal (EDEM = THM) Rolling (EDEM = ROL) Serial Port Command Reset Demand MET RD Figure 8.13 Demand Current Logic Outputs SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 287: Demand Current Logic Output Application-Raise Pickup For Unbalance Current

    !GDEM + GDEM * 50G2 = NOT(GDEM) + GDEM * 50G2 = 51GTC = NOT(logical 0) + (logical 0) * 50G2 = logical 1 Thus, the residual ground time-overcurrent element 51GT operates on its standard pickup: Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 288: View Or Reset Demand Metering Information

    Currents Input currents (A primary) A,B,C Residual ground current (A primary; I = 3I Negative-sequence current (A primary) Power Single-phase megawatts A,B,C MVAR Single-phase megavars A,B,C SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 289: Demand Metering Updating And Storage

    Figure 11.2. Demand Metering The SEL-311C updates demand values approximately every two seconds. Updating and Storage The relay stores peak demand values to nonvolatile storage once per day (it overwrites the previous stored value if it is exceeded). Should the relay lose control power, it will restore the peak demand values saved by the relay at 23:50 hours on the previous day.

  • Page 290: Energy Metering

    Figure 11.2. Energy Metering The SEL-311C updates energy values approximately every two seconds. Updating and Storage The relay stores energy values to nonvolatile storage once per day (it overwrites the previous stored value). Should the relay lose control power, it will restore the energy values saved by the relay at 23:50 hours on the previous day.

  • Page 291: Maximum/Minimum Metering

    MET M and MET RM are also available via the front- panel {METER} pushbutton. See Figure 11.2. Maximum/Minimum The SEL-311C updates maximum/minimum values, if the following conditions are met: Metering Updating ➤ control equation setting FAULT is deasserted...
  • Page 292 Breaker Monitor and Metering Functions Maximum/Minimum Metering The SEL-311C stores maximum/minimum values to nonvolatile storage once per day (it overwrites the previous stored value if it is exceeded). Should the relay lose control power, it will restore the maximum/minimum values saved by the relay at 23:50 hours on the previous day.

  • Page 293: Synchrophasor Metering

    View Synchrophasor Metering Information Via Serial Port MET Command (Metering Data) on page 10.20. The MET PM command displays the synchrophasor measurements. For more information, see View Synchrophasors by Using the MET PM Command on page G.12. Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 295: Overview

    Located at the end of this section. View settings with the respective serial port SHOWSET commands (SHO, SHO L, SHO G, SHO R, SHO T, and SHO P). See SHO Command (Show/ View Settings) on page 10.25. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 296: Settings Changes Via The Front Panel

    Port settings only. Thus, the corresponding Relay, Global, and Port settings sheets that follow in this section can also be used when making these settings via the front panel. Refer to Figure 11.3 for information on settings changes via the front panel. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 297: Settings Changes Via The Serial Port

    5.1) while the relay is disabled. The relay is disabled for about one second. If Logic settings are changed for the active group, the relay can be disabled for up to 15 seconds. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 298 The ALARM contact closes momentarily (for b contact, 7.27), but the EN LED remains on (see opens for an a contact; see Figure Table 5.1) while the new settings are saved. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 299: Time-Overcurrent Curves

    C4 (Long-Time Inverse) • • ⎝ ⎠ ⎝ ⎠ – – Figure 9.10 ⎛ ⎞ ⎛ ⎞ 0.05 4.85 -------------------------- - --------------------- • • ⎝ ⎠ ⎝ ⎠ C5 (Short-Time Inverse) 0.04 – – Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 300: Figure 9.1 U. S. Moderately Inverse Curve: U1

    30 (25) 2.00 15 (12.5) 1.00 6 (5) 0.50 3 (2.5) .5 .6 .7 .8 .9 1 5 6 7 8 9 Multiples of Pickup Figure 9.1 U. S. Moderately Inverse Curve: U1 SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 301: Figure 9.2 U. S. Inverse Curve: U2

    3.00 30 (25) 2.00 15 (12.5) 1.00 6 (5) 0.50 3 (2.5) .5 .6 .7 .8 .9 1 5 6 7 8 9 Multiples of Pickup Figure 9.2 U. S. Inverse Curve: U2 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 302: Figure 9.3 U. S. Very Inverse Curve: U3

    4.00 3.00 15 (12.5) 2.00 1.00 6 (5) 0.50 3 (2.5) .5 .6 .7 .8 .9 1 5 6 7 8 9 Multiples of Pickup Figure 9.3 U. S. Very Inverse Curve: U3 SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 303: Figure 9.4 U. S. Extremely Inverse Curve: U4

    15 (12.5) 5.00 4.00 3.00 6 (5) 2.00 3 (2.5) 1.00 0.50 .5 .6 .7 .8 .9 1 6 7 8 9 Multiples of Pickup Figure 9.4 U. S. Extremely Inverse Curve: U4 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 304: Figure 9.5 U. S. Short-Time Inverse Curve: U5

    8.00 6.00 5.00 15 (12.5) 4.00 3.00 2.00 6 (5) 1.00 3 (2.5) 0.50 .5 .6 .7 .8 6 7 8 9 Multiples of Pickup Figure 9.5 U. S. Short-Time Inverse Curve: U5 SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 305: Figure 9.6 I. E. C. Class A Curve (Standard Inverse): C1

    15 (12.5) 0.10 6 (5) 0.05 3 (2.5) .5 .6 .7 .8 .9 1 5 6 7 8 9 Multiples of Pickup Figure 9.6 I. E. C. Class A Curve (Standard Inverse): C1 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 306: Figure 9.7 I. E. C. Class B Curve (Very Inverse): C2

    0.40 0.30 6 (5) 0.20 3 (2.5) 0.10 0.05 .5 .6 .7 .8 .9 1 6 7 8 9 Multiples of Pickup Figure 9.7 I. E. C. Class B Curve (Very Inverse): C2 SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 307: Figure 9.8 I. E. C. Class C Curve (Extremely Inverse): C3

    0.60 3 (2.5) 0.50 0.40 0.30 0.20 0.10 0.05 .5 .6 .7 .8 .9 1 6 7 8 9 Multiples of Pickup Figure 9.8 I. E. C. Class C Curve (Extremely Inverse): C3 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 308: Figure 9.9 I. E. C. Long-Time Inverse Curve: C4

    600 (500) 300 (250) 1.00 0.90 0.80 0.70 150 (125) 0.60 0.50 0.40 0.30 60 (50) 0.20 30 (25) 0.10 0.05 Multiples of Pickup Figure 9.9 I. E. C. Long-Time Inverse Curve: C4 SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 309: Figure 9.10 I. E. C. Short-Time Inverse Curve: C5

    0.70 0.60 0.50 0.40 6 (5) 0.30 0.20 3 (2.5) 0.10 0.05 .5 .6 .7 .8 .9 6 7 8 9 Multiples of Pickup Figure 9.10 I. E. C. Short-Time Inverse Curve: C5 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 310: Table 9.5 Sel-311C Models 0311C00X And 0311C01X Relay Word Bits

    TAR Command (Display Relay Element Status) on page 10.31). Rows 0 and 1 are reserved for the display of the two front-panel target LED rows. Table 9.5 SEL-311C Models 0311C00x and 0311C01x Relay Word Bits (Sheet 1 of 2) Relay Word Bits TIME COMM...

  • Page 311: Table 9.6 Relay Word Bit Definitions For The Sel-311C

    Setting the Relay 9.17 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.5 SEL-311C Models 0311C00x and 0311C01x Relay Word Bits (Sheet 2 of 2) Relay Word Bits 25A1 25A2 RCSF OPTMN RSTMN PMDOK 79RS 79CY 79LO MAB4...
  • Page 312 9.18 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 2 of 16) Definition Primary Application Phase A is involved in the fault (see Table 5.1) Phase B is involved in the fault...

  • Page 313: Relay Word Bits (Used In Sel Ogic Control Equations)

    Setting the Relay 9.19 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 3 of 16) Definition Primary Application Residual ground current above pickup setting 51GP for residual Testing, Control...
  • Page 314 9.20 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 4 of 16) Definition Primary Application Remote Bit 9 asserted (see Figure 7.10) RB10 Remote Bit 10 asserted (see Figure 7.10)
  • Page 315 Setting the Relay 9.21 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 5 of 16) Definition Primary Application control equation Testing, Seal-in functions, etc. OGIC variable timer input SV5 asserted (see Figure 7.24)
  • Page 316 9.22 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 6 of 16) Definition Primary Application MAB1 Mho AB phase distance zone 1, instantaneous (see Figure 3.4)
  • Page 317 Setting the Relay 9.23 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 7 of 16) Definition Primary Application CLOSE Close logic output asserted (see Figure 6.1) Output contact assignment Close failure condition (asserts for 1/4 cycle;...
  • Page 318 9.24 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 8 of 16) Definition Primary Application F32I Forward channel IP current-polarized directional element (see Figure 4.5 Figure 4.11)
  • Page 319 Setting the Relay 9.25 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 9 of 16) Definition Primary Application Zone 3 phase and/or ground distance, time delayed (see Figure 3.16)
  • Page 320 9.26 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 10 of 16) Definition Primary Application MAG3 Mho ground distance A-phase, zone 3 (see Figure 3.9) MBG3...
  • Page 321 Setting the Relay 9.27 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 11 of 16) Definition Primary Application XAG1 Quadrilateral ground distance A-phase, zone 1 (see Figure 3.10) XBG1...
  • Page 322 9.28 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 12 of 16) Definition Primary Application 50Q1 Level 1 negative-sequence instantaneous overcurrent element (negative-sequence current above pickup setting 50Q1P; see Figure 3.23)
  • Page 323 Setting the Relay 9.29 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 13 of 16) Definition Primary Application Negative-sequence current above pickup setting 51QP for negative- Testing, Control sequence time-overcurrent element 51QT (see Figure 3.26)
  • Page 324 9.30 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 14 of 16) Definition Primary Application 27AB AB phase-to-phase instantaneous undervoltage element (AB phase-to-phase voltage below pickup setting 27PP;...
  • Page 325 Setting the Relay 9.31 Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 15 of 16) Definition Primary Application RMB8A Channel A, received bit 8 Relay-to-relay communication (see Appendix J: M...
  • Page 326 9.32 Setting the Relay Relay Word Bits (Used in SEL Control Equations) OGIC Table 9.6 Relay Word Bit Definitions for the SEL-311C (Sheet 16 of 16) Definition Primary Application 81D1 Level 1 instantaneous frequency element (with corresponding Testing pickup setting 81D1P; see Figure 3.34)

  • Page 327: Settings Explanations

    Identifier Labels Refer to Relay Settings (Serial Port Command SET and Front Panel) on page SET.1. The SEL-311C has two identifier labels: ➤ the Relay Identifier (RID) ➤ the Terminal Identifier (TID) The Relay Identifier is typically used to identify the relay or the type of protection scheme.

  • Page 328: Enable Settings

    SET.22. Parameters The global settings NFREQ and PHROT allow you to configure the SEL-311C to your specific system. Set NFREQ equal to your nominal power system frequency, either 50 Hz or 60 Hz. Set PHROT equal to your power system phase rotation, either ABC or ACB.

  • Page 329: Settings Sheets

    Refer to Relay Element Settings Ranges and Accuracies on page 1.11 for information on 5 A nominal and 1 A nominal ordering options and how they influence overcurrent element setting ranges. Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 331: Settings Sheets For The Sel-311C Relay

    Date _______________ Settings Sheets for the SEL-311C Relay SET.1 of 32 Relay Settings (Serial Port Command SET and Front Panel) Settings Sheets for the SEL-311C Relay Relay Settings (Serial Port Command SET and Front Panel) Identifier Labels (See Settings Explanations on page 9.33)
  • Page 332 SET.2 of 32 Settings Sheets for the SEL-311C Relay Date________________ Relay Settings (Serial Port Command SET and Front Panel) Quadrilateral ground distance element zones (N, 1–4) E21XG (see Figure 3.10–Figure 3.12) Instantaneous/Definite-Time Overcurrent Enable Settings Phase element levels (N, 1–3) (see Figure 3.19)
  • Page 333 Date _______________ Settings Sheets for the SEL-311C Relay SET.3 of 32 Relay Settings (Serial Port Command SET and Front Panel) Demand Metering (THM = Thermal; ROL = Rolling) EDEM (see Figure 8.11) Advanced settings (Y, N) EADVS Mho Phase Distance Elements (Number of mho phase distance element settings dependent on preceding enable setting E21P = 1–4.)
  • Page 334 SET.4 of 32 Settings Sheets for the SEL-311C Relay Date________________ Relay Settings (Serial Port Command SET and Front Panel) Quadrilateral Ground Distance Elements (Number of quadrilateral ground distance element settings dependent on preceding enable setting E21XG = 1–4.) Zone 1 reactance (OFF, 0.05–64.00 Ω secondary {5 A nom.};...
  • Page 335 Date _______________ Settings Sheets for the SEL-311C Relay SET.5 of 32 Relay Settings (Serial Port Command SET and Front Panel) Zone 4 phase current FD 50L4 Setting is active when advanced user setting enable EADVS = Y. Otherwise, setting is made automatically (0.5–100.00 A secondary{5 A nom.};...
  • Page 336 SET.6 of 32 Settings Sheets for the SEL-311C Relay Date________________ Relay Settings (Serial Port Command SET and Front Panel) Quadrilateral and Mho Ground Distance Element Time Delays (See Figure 3.16) (Number of time delay element settings dependent on the larger of preceding enable settings E21MG = 1–4 or E21XG = 1–4.)
  • Page 337 Date _______________ Settings Sheets for the SEL-311C Relay SET.7 of 32 Relay Settings (Serial Port Command SET and Front Panel) Level 3 (OFF, 0.25–100.00 A secondary {5 A nom.}; 50G3P 0.05–20.00 A secondary {1 A nom.}) Level 4 (OFF, 0.25–100.00 A secondary {5 A nom.};...
  • Page 338 SET.8 of 32 Settings Sheets for the SEL-311C Relay Date________________ Relay Settings (Serial Port Command SET and Front Panel) Phase Time-Overcurrent Element (See Figure 3.24) (Make the following settings if preceding enable setting E51P = Y.) Pickup (OFF, 0.25–16.00 A secondary {5 A nom.};...
  • Page 339 Date _______________ Settings Sheets for the SEL-311C Relay SET.9 of 32 Relay Settings (Serial Port Command SET and Front Panel) Zone 6 reactance—Top X1T6 (0.05 to 96.00 Ω secondary {5 A nom.}; 0.25 to 480.00 Ω secondary {1 A nom.}) Zone 5 reactance—Top...
  • Page 340 SET.10 of 32 Settings Sheets for the SEL-311C Relay Date________________ Relay Settings (Serial Port Command SET and Front Panel) Negative reverse load angle (+90.00° to +270.00°) NLAR Zone/Level 3 and 4 Directional Control Zone/Level 3 direction: Forward, Reverse (F, R)
  • Page 341 Date _______________ Settings Sheets for the SEL-311C Relay SET.11 of 32 Relay Settings (Serial Port Command SET and Front Panel) Reverse directional Z0 threshold (–64.00–64.00 Ω secondary {5 A nom.}) (–320.00–320.00 Ω secondary {1 A nom.}) Voltage Elements (See Figure 3.27,...
  • Page 342 SET.12 of 32 Settings Sheets for the SEL-311C Relay Date________________ Relay Settings (Serial Port Command SET and Front Panel) Level 1 time delay (2.00–16000.00 cycles in 0.25-cycle steps) 81D1D Level 2 pickup (OFF, 41.00–65.00 Hz) 81D2P Level 2 time delay (2.00–16000.00 cycles in 0.25-cycle steps) 81D2D Level 3 pickup (OFF, 41.00–65.00 Hz)
  • Page 343 Date _______________ Settings Sheets for the SEL-311C Relay SET.13 of 32 Relay Settings (Serial Port Command SET and Front Panel) POTT Trip Scheme Settings (Also Used in DCUB Trip Schemes) (See Figure 5.6) (Make the following settings if preceding enable setting ECOMM = POTT, DCUB1, or DCUB2.)
  • Page 344 SET.14 of 32 Settings Sheets for the SEL-311C Relay Date________________ Relay Settings (Serial Port Command SET and Front Panel) Zone (level) 3 reverse dropout extension Z3XD (0.00–16000.00 cycles in 0.25-cycle steps) Block trip receive extension BTXD (0.00–16000.00 cycles in 0.25-cycle steps)
  • Page 345 Date _______________ Settings Sheets for the SEL-311C Relay SET.15 of 32 Relay Settings (Serial Port Command SET and Front Panel) SV1 Dropout Time (0.00–999999.00 cycles in 0.25-cycle steps) SV1DO SV2 Pickup Time (0.00–999999.00 cycles in 0.25-cycle steps) SV2PU SV2 Dropout Time (0.00–999999.00 cycles in 0.25-cycle steps) SV2DO SV3 Pickup Time (0.00–999999.00 cycles in 0.25-cycle steps)
  • Page 346 SET.16 of 32 Settings Sheets for the SEL-311C Relay Date________________ Control Equation Settings (Serial Port Command SET L) OGIC Control Equation Settings OGIC (Serial Port Command SET L) control equation settings consist of Relay Word bits (see Table 9.5 Table 9.6) and SEL...
  • Page 347 Date _______________ Settings Sheets for the SEL-311C Relay SET.17 of 32 Control Equation Settings (Serial Port Command SET L) OGIC Block reset timing 79BRS Sequence coordination 79SEQ Reclose supervision (see Figure 6.2) 79CLS Latch Bits Set/Reset Equations (See Figure 7.12)
  • Page 348 SET.18 of 32 Settings Sheets for the SEL-311C Relay Date________________ Control Equation Settings (Serial Port Command SET L) OGIC Set Latch Bit LT15 SET15 Reset Latch Bit LT15 RST15 Set Latch Bit LT16 SET16 Reset Latch Bit LT16 RST16 Torque Control Equations for Inst./Def.-Time Overcurrent Elements...
  • Page 349 Date _______________ Settings Sheets for the SEL-311C Relay SET.19 of 32 Control Equation Settings (Serial Port Command SET L) OGIC control equation Variable SV8 OGIC control equation Variable SV9 OGIC control equation Variable SV10 SV10 OGIC control equation Variable SV11...
  • Page 350 SET.20 of 32 Settings Sheets for the SEL-311C Relay Date________________ Control Equation Settings (Serial Port Command SET L) OGIC Display Point Equations (See Rotating Default Display (Only on Models With LCD) on page 7.36 Rotating Default Display on page 11.12)
  • Page 351 Date _______________ Settings Sheets for the SEL-311C Relay SET.21 of 32 Control Equation Settings (Serial Port Command SET L) OGIC Breaker monitor initiation (see Figure 8.3) BKMON Enable for zero-sequence voltage-polarized and channel IP E32IV current-polarized directional elements (see Figure 4.7)
  • Page 352 SET.22 of 32 Settings Sheets for the SEL-311C Relay Date________________ Global Settings (Serial Port Command SET G and Front Panel) Global Settings (Serial Port Command SET G and Front Panel) Settings Group Change Delay (See Multiple Setting Groups on page 7.19)
  • Page 353 Date _______________ Settings Sheets for the SEL-311C Relay SET.23 of 32 Global Settings (Serial Port Command SET G and Front Panel) Input IN104 debounce time IN104D (0.00–2.00 cycles in 0.25-cycle steps) Input IN105 debounce time IN105D (0.00–2.00 cycles in 0.25-cycle steps)
  • Page 354 SET.24 of 32 Settings Sheets for the SEL-311C Relay Date________________ Global Settings (Serial Port Command SET G and Front Panel) (Make the following settings if preceding enable setting EPMU = Y.) PMU Hardware ID PMID Phasor Data Set, Voltages (V1, ALL) PHDATAV Voltage Angle Comp.
  • Page 355 Date _______________ Settings Sheets for the SEL-311C Relay SET.25 of 32 Sequential Events Recorder Settings (Serial Port Command SET R) Sequential Events Recorder Settings (Serial Port Command SET R) Sequential Events Recorder settings are comprised of three trigger lists. Each trigger list can include up to 24 Relay Word bits delimited by commas.
  • Page 356 SET.26 of 32 Settings Sheets for the SEL-311C Relay Date________________ Text Label Settings (Serial Port Command SET T) Text Label Settings (Serial Port Command SET T) Enter the following characters: 0–9, A–Z, #, &, @, -, /, ., space for each text label setting, subject to the specified character limit.
  • Page 357 Date _______________ Settings Sheets for the SEL-311C Relay SET.27 of 32 Text Label Settings (Serial Port Command SET T) Local Bit LB8 Name (14 characters) NLB8 Clear Local Bit LB8 Label (7 characters) CLB8 Set Local Bit LB8 Label (7 characters)
  • Page 358 SET.28 of 32 Settings Sheets for the SEL-311C Relay Date________________ Text Label Settings (Serial Port Command SET T) Local Bit LB16 Name (14 characters) NLB16 Clear Local Bit LB16 Label (7 characters) CLB16 Set Local Bit LB16 Label (7 characters)
  • Page 359 Date _______________ Settings Sheets for the SEL-311C Relay SET.29 of 32 Text Label Settings (Serial Port Command SET T) Display if DP13 = logical 0 (16 characters) DP13_0 Display if DP14 = logical 1 (16 characters) DP14_1 Display if DP14 = logical 0 (16 characters)
  • Page 360 SET.30 of 32 Settings Sheets for the SEL-311C Relay Date________________ Port Settings (Serial Port Command SET P and Front Panel) Port Settings (Serial Port Command SET P and Front Panel) Protocol Settings (See Below) Protocol (SEL, LMD, DNP, MBA, MBB, MB8A, MB8B,...
  • Page 361 Date _______________ Settings Sheets for the SEL-311C Relay SET.31 of 32 Port Settings (Serial Port Command SET P and Front Panel) LMD Settings LMD Prefix (@, #, $, %, &) PREFIX LMD Address (1–99) ADDR LMD Settling Time (0–30 seconds)
  • Page 362 SET.32 of 32 Settings Sheets for the SEL-311C Relay Date________________ Port Settings (Serial Port Command SET P and Front Panel) Transmit Identifier (1–4) Transmit Identifier (1–4) TXID TXID This setting is This setting is IRRORED IRRORED unavailable if PROTO is set to MBGA or MBGB.

  • Page 363: Overview

    Serial Port Communications and Commands Overview All SEL-311C Relay models have three EIA-232 ports (one front and two rear) and one rear EIA-485 port. Connect the serial port to a computer serial port for local communications or to a modem for remote communications. Other devices useful for communications include the following: ➤...

  • Page 364: Port Connector And Communications Cables

    IRIG-B time code can be input into Serial Port 1 or Serial Port 2 on any of the SEL-311C models. This is easily handled by connecting Serial Port 2 of the SEL-311C to an SEL-2020 with Cable C273A (see cable diagrams that follow in this section).

  • Page 365: Relay Word Bit Tirig

    25-Pin Female "D" Subconnector "D" Subconnector Pin # Pin # Func. Func. *DTE = Data Terminal Equipment (Computer, Terminal, Printer, etc.) SEL-311C to Modem or Cable SEL-C222 Other DCE SEL-311C Relay **DCE Device 9-Pin Male 25-Pin Male "D" Subconnector "D" Subconnector...

  • Page 366: Sel-311C To Sel-Dta2

    10.4 Serial Port Communications and Commands Port Connector and Communications Cables SEL-311C to SEL Cable SEL-C273A SEL-2032/2030/2020 Communications or SEL-2100 SEL-311C Relay 9-Pin Male 9-Pin Male Processor or "D" Subconnector "D" Subconnector SEL-2100 Pin # Pin # Func. Func. IRIG+...
  • Page 367 Port Connector and Communications Cables For communications up to 80 kilometers and for electrical isolation of communications ports, use the SEL-2800 family of fiber-optic transceivers. Contact SEL for more details on these devices. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 368: Communications Protocols

    . In addition, the relay provides Distributed IRRORED Network Protocol (DNP3) as an ordering option. The relay activates protocols on a per-port basis. The SEL-311C is compatible with the SEL-DTA2 Display Transducer Adapter. See Port Settings (Serial Port Command SET P and Front Panel) on page SET.30.
  • Page 369 The protocol is selected by setting the port setting PROTO = LMD. See Appendix C: SEL Distributed Port Switch Protocol (LMD) for more information on SEL Distributed Port Switch Protocol (LMD). Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 370 The relay provides Distributed Network Protocol (DNP3) slave support. DNP is an optional protocol and is described in Appendix I: DNP Communications. Communications IRRORED The SEL-311C supports M relay-to-relay communications on IRRORED two ports simultaneously. See Appendix J: M Communications.

  • Page 371: Serial Port Automatic Messages

    STA Command (Relay Self-Test Status) on page 10.29. SEL-DTA Protocol When the serial port DTA setting is Y, the AUTO setting is hidden and forced to Y. With DTA set to Y, the SEL-311C is compatible with the SEL-DTA2 Display Transducer Adapter. Instruction Manual SEL-311C Relay...

  • Page 372: Serial Port Access Levels

    Level 1. For example, enter the MET command at the Access Level 1 prompt to view metering data: =>MET <Enter> The 2AC command allows the relay to go to Access Level 2. Enter the 2AC command at the Access Level 1 prompt: =>2AC <Enter> SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 373: Access Level 2

    =>>SET <Enter> While the relay is in Access Level 2, any of the Access Level 1, Access Level B, and Access Level 0 commands are also available (commands ACC through VER in Table 10.5). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 374: Command Summary

    Show/view settings => Relay self-test status {STATUS} => Display event summary {EVENTS} => Display relay element status {OTHER} => View/change time {OTHER} => Trigger an event report {OTHER} ==> BRE n Preload/reset breaker wear SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 375 Definition SEL-311C POTT: This is the RID setting (the relay is shipped with the default setting RID = SEL-311C POTT; see Identifier Labels on page 9.33). BUS B, BREAKER 3: This is the TID setting (the relay is shipped with the default setting TID = BUS B, BREAKER 3;...

  • Page 376: Command Explanations

    Because the Password jumper is not in place, the relay asks for the Access Level 1 password to be entered: Password: ? @@@@@@ The relay is shipped with the default Access Level 1 password “OTTER.” Enter the default password: Password: ? OTTER <Enter> SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 377: Access Level 1 Commands

    Serial Port Communications and Commands 10.15 Command Explanations The relay responds: SEL-311C POTT Date: 10/12/99 Time: 16:22:04.372 EXAMPLE: BUS B, BREAKER 3 Level 1 => prompt indicates the relay is now in Access Level 1. => If the entered password is incorrect, the relay asks for the password again .
  • Page 378 10.16 Serial Port Communications and Commands Command Explanations =>BRE <Enter> SEL-311C POTT Date: 10/12/99 Time: 16:24:01.623 EXAMPLE: BUS B, BREAKER 3 Rly Trips= 40.7 IB= 41.4 IC= 53.8 kA Ext Trips= 0.8 IB= 0.9 IC= 1.1 kA Percent wear: A=...
  • Page 379 Serial Port Communications and Commands 10.17 Command Explanations =>COM L <Enter> SEL-311C POTT Date: 10/12/99 Time: 16:24:01.623 EXAMPLE: BUS B, BREAKER 3 FID=SEL-311C-R100-V0-Z001001-D19991118 CID=FF27 Summary for Mirrored Bits channel A For 10/05/99 17:18:12.993 to 10/10/99 18:37:36.123 Total failures Last error...
  • Page 380 To display the relay event summaries, enter the following command: SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 381: Table 10.6 Event Types

    Serial Port Communications and Commands 10.19 Command Explanations =>HIS <Enter> SEL-311C POTT Date: 10/12/99 Time: 16:24:01.623 EXAMPLE: BUS B, BREAKER 3 DATE TIME EVENT LOCAT CURR FREQ GRP SHOT TARGETS 10/01/99 08:33:00.365 TRIG $$$$$$$ 1 60.00 10/02/99 20:32:58.361 ER $$$$$$$ 231 60.00...
  • Page 382 To force the relay to synchronize to IRIG-B, enter the following command: =>IRI <Enter> If the relay successfully synchronizes to IRIG, it sends the following header and access level prompt: SEL-311C POTT Date: 10/12/99 Time: 16:22:04.372 EXAMPLE: BUS B, BREAKER 3 =>...
  • Page 383 (1–32767) to repeat the meter display. If k is not specified, the meter report is displayed once. The output from an SEL-311C is shown: =>MET <Enter> SEL-311C POTT Date: 10/12/99 Time: 16:22:04.372...
  • Page 384 Reset Time Demand, Peak Last time the demands and peak demands were reset To view demand metering values, enter the command: =>MET D <Enter> The output from an SEL-311C is shown: =>MET D <Enter> SEL-311C POTT Date: 10/12/99 Time: 16:22:04.372...
  • Page 385 Serial Port Communications and Commands 10.23 Command Explanations The output from an SEL-311C is shown: =>MET E <Enter> SEL-311C Date: 03/01/00 Time: 15:11:24.056 EXAMPLE: BUS B, BREAKER 3 MWhA MWhB MWhC MWh3P MVARhA MVARhB MVARhC MVARh3P 36.0 36.6 36.7 109.2 15.6...
  • Page 386 MET PM commands entered without the time parameter will not affect any pending MET PM [time] commands. The output from an SEL-311C is shown: =>MET PM <Enter> Date: 03/31/2006 Time: 15:11:00.000...

  • Page 387: Table 10.7 Sho Command Options

    The QUI command returns the relay to Access Level 0. To return to Access Level 0, enter the command: =>QUI <Enter> The relay sets the port access level to 0 and responds: SEL-311C POTT Date: 10/12/99 Time: 16:32:10.747 EXAMPLE: BUS B, BREAKER 3 prompt indicates the relay is back in Access Level 0.
  • Page 388 10.26 Serial Port Communications and Commands Command Explanations Below are sample SHOWSET commands for the SEL-311C model 0311C01x, showing all the factory default settings. The factory default settings for the SEL-311C model 0311C00x are similar. =>SHO <Enter> Group 1 Group Settings:...
  • Page 389 SET14 =0 RST14 =0 Press RETURN to continue SET15 =0 RST15 =0 SET16 =0 RST16 =0 67P1TC=1 51GTC =1 51QTC =1 OUT101=TRIP OUT102=TRIP OUT103=CLOSE OUT104=KEY OUT105=0 OUT106=0 OUT107=0 =52A (Continued on next page) Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 390 PROTO = SEL SPEED = 2400 BITS PARITY= N STOP T_OUT = 15 AUTO RTSCTS= N FASTOP= N => =>SHO R <Enter> Sequential Events Recorder trigger lists: SER1 =M1P,Z1G,M2P,Z2G,M3P,Z3G,51G,51Q,50P1 SER2 =IN101,IN102,OUT101,OUT102,OUT103,OUT104,LOP SER3 =KEY,Z3RB,PTRX => SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 391 (1–32767) to repeat the status display. If n is not specified, the status report is displayed once. The output of an SEL-311C with wye-connected voltage inputs and no extra I/O board is shown:...

  • Page 392: Table 10.8 Sta Command Row And Column Definitions

    10.30 Serial Port Communications and Commands Command Explanations =>STA <Enter> SEL-311C POTT Date: 10/12/99 Time: 16:46:08.998 EXAMPLE: BUS B, BREAKER 3 FID=SEL-311C-R100-V0-Z001001-D19991118 CID=B142 SELF TESTS W=Warn F=Fail +5V_PS +5V_REG -5V_REG +12V_PS -12V_PS +15V_PS -15V_PS 4.92 4.98 -5.02 11.87 -11.98 14.89 -14.95...
  • Page 393 A Relay Word bit is either at a logical 1 (asserted) or a logical 0 (deasserted). Relay Word bits are used in SEL control equations. See Section 9: Setting OGIC the Relay Appendix H: Setting SEL Control Equations. OGIC Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 394: Table 10.9 Tar Command Options

    Clears front-panel tripping target LEDs: TRIP, TIME, COMM, SOTF, 51, A, B, C, G, Zone1, Zone2, Zone3, and Zone4. Unlatches the trip logic for testing pur- poses (see Figure 5.1). Shows Relay Word Row 0. Table 10.10 SEL-311C Relay Word and Its Correspondence to TAR Command TAR 0 TRIP TIME COMM...
  • Page 395 TRI commands entered without the time parameter will not affect any pending TRI [time] commands. The following shows the output from an SEL-311C: Triggered => If the serial port AUTO setting = Y, the relay sends the summary event report: =>...

  • Page 396: Access Level B Commands

    ==> Use the BRE R command to reset the breaker monitor: ==>BRE R <Enter> Reset Trip Counters and Accumulated Currents/Wear Are you sure (Y/N) ? Y <Enter> SEL-311C POTT Date: 10/13/99 Time: 10:12:45.627 EXAMPLE: BUS B, BREAKER 3 Rly Trips= 0.0 IB=...
  • Page 397 ==> The relay switches to Group 2 and pulses the ALARM contact. If the serial port AUTO setting = Y, the relay sends the group switch report: ==> SEL-311C POTT Date: 10/13/99 Time: 10:12:45.627 EXAMPLE: BUS B, BREAKER 3 Active Group = 2 ==>...
  • Page 398 PUL command and responds: Aborted: No Breaker Jumper The relay generates an event report if any of the OUT101 through OUT107 contacts are pulsed. The PUL command is primarily used for testing purposes. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 399: Table 10.11 Sel-311C Control Subcommands

    =>> You must enter the same remote bit number in both steps in the command. If the bit numbers do not match, the relay responds Invalid Command Table 10.11 SEL-311C Control Subcommands Subcommand Description SRB n Set Remote Bit n (“ON” position) CRB n Clear Remote Bit n (“OFF”...
  • Page 400 2. To change the password for Access Level 1 to BIKE, enter the following: =>>PAS 1 BIKE <Enter> =>> After entering new passwords, type PAS <Enter> to inspect them. Make sure they are what you intended, and record the new passwords. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 401 DISABLE. For example PAS 1 DISABLE disables password protection for Level 1. SET Command (Change Settings) The SET command allows the user to view or change the relay settings—see Table 9.1. Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 403: Sel-311C Relay Command Summary

    SEL-311C Relay Command Summary Access Level 0 The only thing that can be done at Access Level 0 is to go to Access Level 1. The screen Command prompt is: = Enter Access Level 1. If the main board password jumper is not in place, the relay prompts for entry of the Access Level 1 password in order to enter Access Level 1.
  • Page 404 SEL-311C Relay Command Summary Access Level 1 The Access Level 1 commands primarily allow the user to look at information (e.g., settings, Commands metering), not change it. The screen prompt is: => EVE C n Show compressed event report number n for use with SEL-5601 Analytic Assistant.
  • Page 405 SEL-311C Relay Command Summary Access Level B Access Level B commands primarily allow the user to operate output contacts. All Access Level 1 Commands commands can also be executed from Access Level B. The screen prompt is: ==> BRE n Enter BRE W to preload breaker wear.
  • Page 406 This page intentionally left blank...

  • Page 407: Section 11: Front-Panel Interface (Only On Models With Lcd)

    This section describes how to get information, make settings, and execute NOTE: This section only applies to control operations from the relay front panel. It also describes the default SEL-311C Relay models with an LCD. displays. Disregard this section for relays ordered with Targets Only (no LCD).

  • Page 408: Front-Panel Pushbutton Operation

    Secondary Primary Function Secondary q See Figure 11.4. Figure 11.1 SEL-311C Front-Panel Pushbuttons—Overview Primary Functions Note in Figure 11.2 Figure 11.3 that the front-panel pushbutton primary functions correspond to serial port commands—both retrieve the same information or perform the same function. To get more detail on the...

  • Page 409: Figure 11.2 Sel-311C Front-Panel Pushbuttons-Primary Functions

    Front-panel pushbutton functions that correspond to Access Level 1 serial port commands do not require the entry of the Access Level 1 password through the front panel. Figure 11.2 SEL-311C Front-Panel Pushbuttons—Primary Functions Front-Panel Password Security Refer to the comments at the bottom of Figure 11.3...

  • Page 410: Secondary Functions

    Output contacts are pulsed for only one second from the front panel. t Local control is not available through the serial port and does not require the entry of a password. Figure 11.3 SEL-311C Front-Panel Pushbuttons—Primary Functions (Continued) Secondary Functions After a primary function is selected (see Figure 11.2...

  • Page 411: Figure 11.4 Sel-311C Front-Panel Pushbuttons-Secondary Functions

    The front-panel display gives indication of the arrow button to use (Displays symbols: ← → ↑ ↓) EXIT Function Exit Entirely and Description Return to Default Display Figure 11.4 SEL-311C Front-Panel Pushbuttons—Secondary Functions Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 412: Functions Unique To The Front-Panel Interface

    No Reclosing set The corresponding text label settings (shown with example settings) are: 79LL = SET RECLOSURES (Last Shot Label—limited to 14 characters) 79SL = RECLOSE COUNT (Shot Counter Label—limited to 14 characters) SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 413 SET RECLOSURES=2 RECLOSE COUNT =1 The relay trips the breaker open again. The reclosing relay shot counter screen still appears as: SET RECLOSURES=2 RECLOSE COUNT =1 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 414: Local Control

    Figure 11.5 Local Control Switch Configured as an ON/OFF Switch Relay Word OFF Position Logical 1 (Logical 0) (n = 1 through 16) MOMENTARY Position Figure 11.6 Local Control Switch Configured as an OFF/MOMENTARY Switch SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 415: Figure 11.7 Local Control Switch Configured As An On/Off/Momentary Switch

    Press the right arrow pushbutton, and scroll to the next set local control switch: Relay MANUAL CLOSE Word MANUAL CLOSE ←→ RETURN Logical 1 (Logical 0) Position: RETURN CLOSE switches MANUAL TRIP: RETURN/TRIP MANUAL CLOSE: RETURN/CLOSE are both OFF/MOMENTARY switches (see Figure 11.6). Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 416 (long enough to be seen), and then it returns to the RETURN position: Relay MANUAL TRIP Word MANUAL TRIP RETURN Logical 1 (Logical 0) Position: RETURN TRIP switch is an OFF/MOMENTARY type switch, like the MANUAL CLOSE switch, and operates similarly. MANUAL TRIP SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 417 If the reclosing switch is in the enable position (switch closed) before the power outage, it will be in the same position after the outage when power is restored. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 418: Rotating Default Display

    ZONE/LEVEL PORT F Press CNTRL for Local Control If display point labels (e.g., ) are enabled for 79 DISABLED BREAKER OPEN display, they also enter into the display rotation (display time = SCROLD). SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 419 Local bit LB1 is used as a recloser enable/disable. Optoisolated input IN101 is used as a circuit breaker status input (a 52a circuit breaker auxiliary contact is connected to input IN101; see Optoisolated Inputs on page 7.3). Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 420: Figure 11.8 Correspondence Between Changing Display Point States And Enabled Display Point Labels

    FAULT TYPE ZONE/LEVEL DP4_1 = BREAKER CLOSED DP4 = IN101 = logical 1 79 DISABLED DP4_0 = BREAKER OPEN BREAKER CLOSED Figure 11.8 Correspondence Between Changing Display Point States and Enabled Display Point Labels SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 421: Scroll Lock Control Of Front Panel Lcd

    {SELECT} key a second time to freeze scrolling. Exit Press the {EXIT} key to leave Scroll Lock Control and return the rotating display to normal operation. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 422: Cancel

    TAR BRK_MON Additional Rotating Figure 5.17 and accompanying text in Section 5: Trip and Target Logic for an example of resetting a rotating default display with the {TARGET RESET} Default Display pushbutton. Example SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 423: Section 12: Standard Event Reports And Ser

    Section 12 Standard Event Reports and SER Overview The SEL-311C Relay provides two separate event reports: ➤ Standard 15/30/60/180-cycle oscillographic event reports ➤ Sequential events recorder (SER) report The standard event reports contain date, time, current, voltage, frequency, relay element, optoisolated input, output contact, and fault location information.

  • Page 424: Standard 15/30/60/180-Cycle Event Reports

    When setting ER sees a logical 0 to logical 1 transition, it generates an event report (if the SEL-311C is not already generating a report that encompasses the new transition). The factory setting is:...

  • Page 425: Event Summary

    (see Figure 12.1). Event summaries contain the following information: ➤ Relay and terminal identifiers (settings RID and TID) ➤ Date and time when the event was triggered ➤ Event type ➤ Fault location Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 426: Figure 12.1 Example Event Summary

    15-cycle event report in NOTE Figure 12.3 is on multiple Figure 12.3. pages. =>> SEL-311C POTT Date: 10/14/99 Time: 08:53:34.926 EXAMPLE: BUS B, BREAKER 3 Event: BCG T Location: 48.84 Trip Time: 08:53:34.930 #: 00008...

  • Page 427: Table 12.1 Event Types

    Active settings group at trigger time. Trip and Close Times Trip and close times follow 52A Relay Word bit contact changes during the event. A blank value indicates that a trip or close did not occur. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 428: Retrieving Full-Length Standard Event Reports

    A Specifies that only the analog section of the event is displayed (current, voltage, station battery, polarizing voltage). D Specifies that only the digital section (protection and control elements) of the event is displayed. C Display the report in Compressed ASCII format. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 429: Synchrophasor-Level Accuracy In Event Reports

    Invalid Event. Synchrophasor-Level The SEL-311C provides the option to display event report data aligned to a high-accuracy time source by adding the P parameter. The header indicates the Accuracy in Event availability of a high-accuracy time source by displaying the status of Relay Reports Word bit TSOK.

  • Page 430: Compressed Ascii Event Reports

    Filtered and The SEL-311C samples the basic power system measurands (ac voltage, ac current, station battery, and optoisolated inputs) 16 times per power system Unfiltered Event cycle. The relay filters the measurands to remove transient signals. The relay Reports operates on the filtered values and reports them in the event report.

  • Page 431: Clearing Standard Event Report Buffer

    Difference time referenced to previous row (only available with P parameter) Voltage measured at power input terminals Z25 and Z26 (Vdc) Note that the ac values change from positive to negative in Figure 12.3, indicating the sinusoidal nature of the waveforms. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 432: Table 12.4 Output, Input, Protection, And Control Element Event Report Columns

    If Zone 2 AG element (XAG2 or MAG2) set, not ZAG1 ZAG3 If Zone 3 AG element (XAG3 or MAG3) set, not ZAG1 or ZAG2 ZAG4 If Zone 4 AG element (XAG4 or MAG4) set, not ZAG1 or ZAG2 or ZAG3 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 433 Forward zero-sequence ground directional element F32V picked up. R32V Reverse zero-sequence ground directional element R32V picked up. F32I Forward current polarized ground directional element F32I picked up. R32I Reverse current polarized ground directional element R32I picked up. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 434 A-phase instantaneous overvoltage element 59A picked up. B-phase instantaneous overvoltage element 59B picked up. C-phase instantaneous overvoltage element 59C picked up. 59A and 59B elements picked up. 59B and 59C elements picked up. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 435 RCSF, CF, 79RS, Reclosing relay nonexistent. 79CY, 79LO Reclose supervision failure condition (RCSF asserts for only 1/4 cycle). Close failure condition (CF asserts for only 1/4 cycle). Reclosing relay in Reset State (79RS). Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 436 Out2 7 8 OUT207 , OUT208 Output contact OUT208 asserted. Both OUT207 and OUT208 asserted. Output contact OUT209 asserted. Out2 9 0 OUT203 , OUT204 Output contact OUT210 asserted. Both OUT209 and OUT210 asserted. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 437: Table 12.5 Communication Elements Event Report Columns

    Z3RB Zone /Level 3 reverse block Z3RB asserted. Key permissive trip signal KEY asserted. EKEY EKEY Echo key EKEY asserted. ECTT ECTT Echo conversion to trip condition ECTT asserted. Weak-infeed condition WFC asserted. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 438 B transmit bit 4 TMB4B asserted. IRRORED Both TMB3B and TMB4B asserted. TMB B 5 6 TMB5B, TMB6B channel B transmit bit 5 TMB5B asserted. IRRORED channel B transmit bit 6 TMB6B asserted. IRRORED SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 439 Hex value of Relay Word 7, RB1–RB8, Remote Bits Rem RW 8 RB9–RB16 00–FF Hex value of Relay Word 8, RB9–RB16, Remote Bits Ltch RW 9 LT1–LT8 00–FF Hex value of Relay Word 9, LT1–LT8, Latch Bits Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 440 SV13, SV13T SV14, SV14T SV15, SV15T SV16, SV16T Hexadecimal values are constructed with the highest numbered bit (e.g., LB8) being the least significant, as follows: = 8A Hex SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 441: Example Standard 15-Cycle Event Report

    12.1). These currents are listed at the end of the event report in the event summary. If the “trigger” row (>) and the faulted phase current row (*) are the same row, the * symbol takes precedence. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 442 12.20 Standard Event Reports and SER Example Standard 15-Cycle Event Report =>>EVE <Enter> Figure 12.1 SEL-311C POTT Date: 10/14/99 Time: 08:53:34.926 EXAMPLE: BUS B, BREAKER 3 firmware identifier firmware checksum identifier FID=SEL-311C-R100-V0-Z001001-D19991118 CID=B142 Currents (Amps Pri) Voltages (kV Pri) FREQ Vdc -200 67.4 -131.6...
  • Page 443 ..V .r......*........ . V .r......*......(Continued on next page) Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 444 *........00 00 00 00 40 00 ....*........00 00 00 00 40 00 ....(Continued on next page) SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 445 Shot: Frequency: 60.01 Targets: ZONE1 Currents (A Pri), ABCPGQ: 2478 2480 4294 Group 1 Group Settings: =SEL-311C POTT =EXAMPLE: BUS B, BREAKER 3 = 200 CTRP = 200 = 2000.00 PTRS = 2000.00 Z1MAG = 7.80 Z1ANG = 84.00 Z0MAG = 24.80 Z0ANG = 81.50...

  • Page 446: Figure 12.3 Example Standard 15-Cycle Event Report 1/4-Cycle Resolution

    Figure 12.5 shows how the event report current column data can be converted to phasor rms values. Voltages are processed similarly. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 447: Figure 12.4 Derivation Of Event Report Current Values And Rms Current Values From Sampled Current Waveform

    Figure 12.4 Derivation of Event Report Current Values and RMS Current Values From Sampled Current Waveform Figure 12.4, note that any two rows of current data from the event report in Figure 12.3, 1/4 cycle apart, can be used to calculate rms current values. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 448: Figure 12.5 Derivation Of Phasor Rms Current Values From Event Report Current Values

    Magnitude = (1945) + (1531) = 2475 Angle = Arctan (Y/X) = Arctan (1531/1945) = 38.2˚ X = 1945 Figure 12.5 Derivation of Phasor RMS Current Values From Event Report Current Values SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 449 IB = 2475 A ∠ 38.2° The present sample (IB = 1945 A) is a real rms current value that relates to the phasor rms current value: 2475 A • cos(38.2°) = 1945 A Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 450: Sequential Events Recorder (Ser) Report

    The relay saves the latest 512 rows of the SER in nonvolatile memory. Row 1 is the most recently triggered row, and row 512 is the oldest. View the SER Reports report by date or SER row number as outlined in Table 12.6. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 451: Table 12.6 Example Ser Serial Port Commands And Results

    (Month/Day/Year). If setting DATE_F = YMD, then the dates are entered Year/Month/Day. If the requested SER event report rows do not exist, the relay responds: No SER Data Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 452: Clearing Ser Report

    Clear the SER report from nonvolatile memory with the SER C command as shown in the following example: =>>SER C <Enter> Clear the SER Are you sure (Y/N) ? Y <Enter> Clearing Complete SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 453: Example Sequential Events Recorder (Ser) Report

    Example Sequential Events Recorder (SER) Report The following example sequential events recorder (SER) report in Figure 12.6 also corresponds to the example standard 15-cycle event report in Figure 12.3. =>>SER <Enter> SEL-311C POTT Date: 10/14/99 Time: 08:56:47.400 EXAMPLE: BUS B, BREAKER 3 FID=SEL-311C-R100-V0-Z001001-D19991118 CID=B142 DATE...
  • Page 454 This page intentionally left blank...

  • Page 455: Section 13: Testing And Troubleshooting

    Testing and Troubleshooting Overview This section provides guidelines for determining and establishing test routines for the SEL-311C Relay. Included are discussions on testing philosophies, methods, and tools. Relay self-tests and troubleshooting procedures are shown at the end of the section.

  • Page 456: Testing Philosophy

    Ensure that all auxiliary equipment operates as intended. 3. What to test: a. All connected or monitored inputs and outputs, polarity and phase rotation of ac connections, simple check of protection elements. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 457: Maintenance Testing

    Step 4. Using the event report input and output data, you can determine that the relay is asserting outputs at the correct instants and that auxiliary equipment is operating properly. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 458 At SEL, we recommend that maintenance tests on SEL relays be limited under the guidelines provided above. The time saved may be spent analyzing event data and thoroughly testing those systems that require more attention. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 459: Testing Methods And Tools

    PULSE Use the PULSE (PUL) command to test the contact output circuits. The PULSE command is available at the serial ports and the front panel. See Section 10: Serial Port Communications and Commands. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 460: Low-Level Test Interface

    The examples below show the settings necessary to route the phase time-overcurrent element 51PT to the output contacts and the SER. The 51PT element, like many in the SEL-311C, is controlled by enable settings and/or OGIC ® torque control SEL control equations.
  • Page 461 You can set the relay to generate an entry in the Sequential Events Recorder (SER) for testing relay elements. Use the SET R command to include the element(s) under test in any of the SER trigger lists (SER1–SER3). See Section 12: Standard Event Reports and SER. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 462 SER report. Use this method to verify timing associated with time-overcurrent elements, reclosing relay operation, etc. Do not forget to reenter the correct relay settings when you are ready to place the relay in service. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 463: Relay Testing

    SEL-311A, SEL-311B, and SEL-311C relays. Note that the SEL-311A has two zones, the SEL-311B has three zones, and the SEL-311C has four zones. Settings E21P, E21MG, and E21XG will need to be set to “2” instead of “3” when testing the SEL-311A.
  • Page 464 During the lamp test, the relay illuminates all 16 front- panel LEDs for about one second. The relay also turns on the LCD back lighting. If the LCD contrast is poor, refer to Relay Troubleshooting for steps to adjust it. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 465 Q should be approximately 0 MVAR. If you inadvertently switched a pair of voltages or currents, the MW reading should be approximately zero. It is important to remember this when commissioning the relay using system voltages and currents. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 466 The relay then resumes the default display. e. Press the pushbutton labeled {SET}. f. The display shows: NOTE: The SEL-311C includes six setting groups. While you are testing this relay, it is important to change settings in the group that is active. If...

  • Page 467: Table 13.2 Fault Locator Test Values

    INST, Zone 1, A, G OUT1, OUT2, OUT4 INST, Zone 1, B, C 75 miles 85 miles OUT1, OUT2, OUT4 TIME, Zone 2, A, G OUT1, OUT2, OUT4 TIME, Zone 2, B, C 85 miles Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 468: Output Contact Explanation

    Permissive Overreaching Transfer Tripping protection schemes to send the available in the SEL-311B and SEL-311A relays. permissive signal to the remote end. The SEL-311C asserts the KEY element when overreaching Zone 2 elements pick up, if other conditions permit. Target LED The TRIP target illuminates at the rising edge of trip (the new assertion of the TRIP Relay Word bit).

  • Page 469: Test Setup

    Any protective element may be tested and any fault type simulated through use of these connections. Relay Rear-Panel Voltage and Current Inputs Three-Phase Voltage and Current Test Sources Figure 13.2 Three Voltage Source and Three Current Source Test Connections Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 470: Figure 13.3 Phase-To-Phase, Phase-To-Ground, And Two-Phase-To-Ground Fault Test Connections Using Two Current Sources

    13.3. Three-phase faults may be simulated through use of the connections shown in Figure 13.4. Relay Rear-Panel Voltage and Current Inputs Three-Phase Voltage Two-Phase Current Test Sources Figure 13.3 Phase-to-Phase, Phase-to-Ground, and Two-Phase-to-Ground Fault Test Connections Using Two Current Sources SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 471: Figure 13.4 Three-Phase Fault And Meter Test Connections Using Two Current Sources

    Phase-ground faults may be simulated through use of the connections shown in Figure 13.5. Phase-to- phase faults may be simulated through use of the connections shown in Figure 13.6. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 472: Figure 13.5 Phase-To-Ground Fault Test Connections Using A Single Current Source

    13.18 Testing and Troubleshooting Test Setup Relay Rear-Panel Voltage and Current Inputs Three-Phase Voltage and Current Test Sources Figure 13.5 Phase-to-Ground Fault Test Connections Using a Single Current Source SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 473: Serial Communications Equipment Connections

    We recommend using a terminal during relay testing. Figure 13.7 shows Equipment typical connections between a computer and the SEL-311C Port F. Complete details regarding serial communications with the relay may be found in Connections Section 10: Serial Port Communications and Commands.

  • Page 474: Test Procedures

    Test Procedures Test Procedures This section includes outline test procedures for overcurrent, directional, phase distance, and ground distance elements included in the SEL-311C. The procedures are general, so that they may be applied to any specific element or zone. Overcurrent Elements The SEL-311C includes phase, residual, negative-sequence, and positive- sequence overcurrent elements.

  • Page 475: Table 13.4 Types Of Overcurrent Elements

    Calculating Overcurrent Element Test Quantities The SEL-311C is equipped with several different types of overcurrent elements. Each has a specific purpose and a slightly different method of testing. The types of overcurrent elements, the signals they operate from, and the elements of that type are listed below.

  • Page 476: Negative-Sequence Directional Element

    OUT106 to close. This should occur when current applied is approximately 11.25 amps. Negative-Sequence The SEL-311C includes phase (F32Q and R32Q) and ground (F32QG and R32QG) directional elements that operate based upon the calculated Directional Element magnitude and angle of negative-sequence impedance applied to the relay.
  • Page 477 • Z2F 0.25 – • Equation 13.5 Where: --------- Equation 13.6 The reverse directional threshold is calculated through use of Equation 13.7 when Z2R is positive or Equation 13.8 when Z2R is negative. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 478 These supervisory conditions are described below: Magnitude of 3I The SEL-311C uses the 50QF and 50QR negative-sequence overcurrent elements to supervise operation of the directional element. If the magnitude of applied 3I is not greater than the 50QFP setting, the F32Q and F32QG elements do not assert to indicate direction.
  • Page 479 Step 7. Connect outputs OUT106 and OUT107 to the sense input of your test set, an ohmmeter, or some other contact sensing device. Step 8. Connect the voltage source to the A-phase to neutral relay voltage input. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 480 Assuming that V for this test should be 96°. Determine the magnitude of A-phase current where Z2 equals Z2R or Z2F through use of Equation 13.12: ⎛ ⎞ --------- • ⎝ ⎠ Equation 13.12 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 481 For magnitudes of I less than 23.4 amps, F32Q should not assert, given the other test quantities. For I magnitudes greater than 23.4 amps, Z2c applied is less than Z2FT, so F32Q asserts. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 482 1 ∠Z1ANG° = 1 ∠83.97° ∠ ∠ ∠ Re 6 180° • 1 83.97° • 7.80 96° ----------------------------------------------------------------------------------------------------- 7.80 46.8 ohms ------------------------ - 60.84 0.77 ohms Z2FT when Z2m = 0.77 ohms Equation 13.20 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 483 You can calculate the magnitude and angle of V , given the magnitude and angle of each of the phase quantities through use of the equations below. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 484 13.24: ⎛ ⎞ --------- • ⎝ ⎠ Equation 13.24 For Z2R = 5.45 Ω: ⎛ ⎞ 6.0 volts ------------------------ - • ⎝ ⎠ 5.45 ohms 3.3 amps Equation 13.25 Step 13. Calculate Z2m: SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 485 23.4 amps, Z2c applied is less than Z2FT, so F32Q asserts. Step 17. Turn on the voltage sources. Step 18. Apply: = 49.0 V ∠0° = 67.0 V ∠–120° = 67.0 V ∠120° = 0.0 A ∠96° Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 486 1 ∠Z1ANG° = 1 ∠83.97° ∠ ∠ ∠ Re 6 180° • 1 83.97° • 7.80 96° ----------------------------------------------------------------------------------------------------- 7.80 46.8 ohms ------------------------ - 60.84 0.77 ohms Z2F when Z2m = 0.77 ohms Equation 13.32 SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 487: Phase Mho Distance Elements

    Y or Y1 the relay disables the phase distance elements when a loss-of- potential is detected, regardless of other signals applied to the relay. If you test the phase distance elements through use of low-voltage signals, set ELOP = N to simplify the test. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 488 Step 6. Type Y <Enter> to accept those settings. Step 7. Connect output OUT106 to the sense input of your test set, an ohmmeter, or some other contact sensing device. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 489: Table 13.5 Test Quantities For Zone 2 Phase Distance Element

    The 50QF negative-sequence overcurrent element operates based upon the magnitude of 3I applied. Using the current connections shown in Figure 13.6, we can calculate the magnitude of 3I applied based upon the magnitude of I TEST Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 490 9.36 46.8 volts secondary Equation 13.37 Refer to Figure 13.8 and use the equations below to calculate the magnitude and angle of V and V based upon the magnitude of V calculated above. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 491: Figure 13.8 Phase Distance Element Test Voltage Signals

    In the SEL-311C, the phase distance element maximum torque angle is defined by the angle of the relay Z1ANG setting. For the example relay settings, I should lag V by 83.97°.
  • Page 492 (–15.47 Ω) is less than the Z2FT threshold based upon the Z2F setting (0.77 Ω) and Z2m (15.47 Ω). Therefore, the 32QF element asserts when these signals are applied. If Z2c applied is SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 493: Ground Mho Distance Elements

    When a zone of phase distance protection is set to reach in one direction, the ground distance elements associated with that zone must be set to reach in the same direction. Reach is set in secondary Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 494 If significant pole-scatter occurs when a circuit breaker closes, sensitive ground distance elements may operate undesirably because of the unbalanced signals applied. The SEL-311C disables the ground distance elements during Three-Pole Open conditions and for a short, settable time after the breaker closes.
  • Page 495 Step 7. Connect output OUT106 to the sense input of your test set, an ohmmeter, or some other contact sensing device. Step 8. Connect the voltage sources to the A-phase, B-phase, and C-phase to neutral relay voltage inputs. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 496: Table 13.6 Test Quantities For Zone 2 Ground Mho Distance Element

    The 50QF negative-sequence overcurrent element operates based upon the magnitude of 3I applied. Using the current connections shown in Figure 13.5, we can calculate the magnitude of 3I applied based upon the magnitude of I TEST SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 497 The SEL-311C uses k0M1 and k0A1 settings to define the zero-sequence current compensation factor for Zone 1 ground distance elements.
  • Page 498 Z2F setting and Z2m. -- - • • • -- - • • • Equation 13.57 ∠ Re V • 1 Z1ANG° • --------------------------------------------------------------------------- - Equation 13.58 --------- Equation 13.59 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 499 As an example, calculate the current signal necessary to test the distance element at an angle of 38.97°. First, the new desired impedance angle (38.97°) is 45° less than the original test impedance angle (83.97°). Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 500 Changing the E21MG setting prevents the relay ground mho distance elements from interfering with the test. Step 3. Select output contacts to indicate operation of the Z2G element. In this example, we use the OUT106 output. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 501: Table 13.7 Test Quantities For Zone 2 Ground Quadrilateral Distance Element: Reactive Reach

    The SEL-311C uses k01M and k01A settings to define the Instruction Manual SEL-311C Relay...
  • Page 502 I lags V by 90° is: ∠ ∠ Im V 0° • 90° • Equation 13.70 Substituting this into the equation above yields: 40.0 • 9.36 -------------------------------- - • 1.71 Equation 13.71 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 503 = 67 ∠–120° volts and V = 67 ∠120°volts. Step 11. Select V The ground distance elements are supervised by the ground directional element. Step 12. Check the negative-sequence quantities applied and verify that the 32GF element asserts. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 504 (–10.84 Ω) is less than the Z2FT threshold (–4.46 Ω), so the 32GF element asserts when these signals are applied. If Z2c applied is greater than the Z2FT setting, select new test current and voltages through performance of the steps outlined above. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 505 Step 3. Select an output contact to indicate operation of the Z2G element. In this example, use the OUT106 output. Step 4. From Access Level 2, execute the SET L n command to configure Output 6 to close for assertion of the Z2G element. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 506: Table 13.8 Test Quantities For Zone 2 Ground Quadrilateral Distance Element: Resistive Reach

    The SEL-311C uses k01M and k01A settings to define the zero-sequence current compensation factor for all zones.
  • Page 507 8.0 amps Equation 13.86 The Zone 2 ground distance element is forward. Thus, it is supervised by the forward directional element 32GF, as well as the 50L2 and 50GZ2 phase and residual overcurrent elements. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 508 Step 13. Then calculate the negative-sequence impedance, Z2c, applied through use of Equation 13.90. -- - • • • -- - • • • Equation 13.89 SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 509 Set the current angle to 0.0°. d. Slowly increase the magnitude of current applied until the Z2G element asserts, causing OUT106 to close. This occurs when current applied is approximately 8.0 amps. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 510: Troubleshooting Test Results

    Incorrect Contact Check the logic equation settings to determine Operation which elements are enabled to operate the contact. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 511 Check the event report to determine which elements asserted during the event. Check the connections and test signals to ensure that the appropriate signals were applied to cause the element under test to assert. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 512: Relay Self-Tests

    +4.50 V Latched +5.40 V –4.50 V –5.50 V ±12 V PS Warning ±11.50 V Pulsed Measures the 12 V power supply ±12.50 V every 10 seconds. Failure ±11.20 V Latched ±14.00 V SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 513 10 seconds. The following self-tests are performed by dedicated circuitry in the microprocessor and the SEL-311C main board. Failures in these tests shut down the microprocessor and are not shown in the STATUS report.

  • Page 514: Relay Troubleshooting

    Ensure that the analog input cable between transformer secondary and main board is not loose or defective. ➤ Inspect the relay self-test status with the STA command or with the front- panel {STATUS} pushbutton. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 515: Relay Calibration

    Testing and Troubleshooting 13.61 Relay Calibration Relay Calibration The SEL-311C is factory-calibrated. If you suspect that the relay is out of calibration, please contact the factory. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 516: Factory Assistance

    Factory Assistance Factory Assistance We appreciate your interest in SEL products and services. If you have questions or comments, please contact us at: Schweitzer Engineering Laboratories, Inc. 2350 NE Hopkins Court Pullman, WA USA 99163-5603 Tel: (509) 332-1890 Fax: (509) 332-7990 Internet: www.selinc.com...

  • Page 517: Section 14: Application Settings For Sel-221 Series Relays

    SEL-2PG10 to SEL-311C Settings Conversion Guide on page 14.53 Following this section, you will find a series of Settings Sheets that explain how to set the SEL-311C so that it will function as a specific SEL-221 Series Relay. ➤ SEL-311C Settings Sheet Application Setting 221G ➤...

  • Page 518: Sel-221G To Sel-311C Settings Conversion Guide

    SEL-221G to SEL-311C Settings Conversion Guide SEL-221G to SEL-311C Settings Conversion Guide Set APP = 221G in the SEL-311C Relay to configure the relay to closely approximate the features, performance, and settings of an SEL-221G. When APP = 221G, the SEL-311C: 1.

  • Page 519: Key Differences Between The Sel-221G And The Sel-311C

    Zone 4 Diam. = 1.5 • Zone 3 Diam. SEL-221G Out-of-Step Characteristic SEL-311C Out-of-Step Characteristic Figure 14.1 SEL-221G and SEL-311C Out-of-Step Characteristics Application Settings From Access Level 2, set the SEL-311C application setting to “221G” as shown below: =>>SET APP TERSE <Enter> Line Parameter Settings: Application...

  • Page 520: Convert Sel-221G Relay Settings To Sel-311C Settings

    SEL-221G to SEL-311C Settings Conversion Guide Convert SEL-221G All SEL-221G current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-221G current setting by the Primary Quantities to current transformer ratio setting (CTR) to make the change.
  • Page 521 Application Settings for SEL-221 Series Relays 14.5 SEL-221G to SEL-311C Settings Conversion Guide Table 14.1 SEL-311C Settings Calculated From SEL-221G Settings (Sheet 2 of 3) SEL-311C SEL-311C Instruction SEL-221G Instruction Calculated From SEL-221G Settings Setting Manual Section Manual Section Mho Phase Distance Elements Section 2—Mho Elements...

  • Page 522: Ogic

    This corresponds to SEL-221G setting 50L. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-221G. Time dial adjustments may be necessary. The SEL-221G uses a circular out-of-step characteristic. The SEL-311C uses a quadrilateral out-of-step characteristic.
  • Page 523 Application Settings for SEL-221 Series Relays 14.7 SEL-221G to SEL-311C Settings Conversion Guide appropriate SEL-221G Relay Word bit equivalent expression (Table 14.3) and enter the resultant expression in the related SEL control equation listed in OGIC Table 14.2. Table 14.3 SEL...

  • Page 524: Table 14.4 Default Sel-221G Mask Logic Setting For Mrc

    SEL control equation for 79DTL when APP = 221G. OGIC When setting APP = 221G, the SEL-311C automatically sets the following control equations. Change the settings just as you would change the OGIC Mask Logic settings in an SEL-221G to customize the relay logic.
  • Page 525 0 (reserved for MBT) SV3 = The following contact input assignments are made automatically by the SEL-311C when setting APP = 221G. These assignments cannot be changed unless setting APP is changed back to APP = 311C. Default Contact Input Functions...

  • Page 526: Sel-221G-5 To Sel-311C Settings Conversion Guide

    SEL settings are Boolean expressions OGIC used to customize the logic of the SEL-311C. To set the SEL-311C to emulate an SEL-221G-5, follow these four steps: Step 1. Turn on the SEL-221G-5 application setting by making setting APP = 221G5.

  • Page 527: Key Differences Between The Sel-221G-5 And The Sel-311C

    Zone 4 Diam. = 1.5 • Zone 3 Diam. SEL-221G Out-of-Step Characteristic SEL-311C Out-of-Step Characteristic Figure 14.2 SEL-221G-5 and SEL-311C Out-of-Step Characteristics Application Settings From Access Level 2, set the SEL-311C application setting to “221G5” as shown below: =>>SET APP TERSE <Enter> Line Parameter Settings: Application...

  • Page 528: Convert Sel-221G-5 Settings To Sel-311C Settings

    SEL-221G-5 to SEL-311C Settings Conversion Guide Convert SEL-221G-5 All SEL-221G-5 current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-221G-5 current Primary Quantities to setting by the current transformer ratio setting (CTR) to make the change.
  • Page 529 Application Settings for SEL-221 Series Relays 14.13 SEL-221G-5 to SEL-311C Settings Conversion Guide Table 14.5 SEL-311C Settings Calculated From SEL-221G-5 Settings (Sheet 2 of 3) SEL-311C SEL-311C Instruction SEL-221G-5 Instruction Calculated From SEL-221G-5 Settings Setting Manual Section Manual Section Mho Phase Distance Elements Section 2—Mho Elements...

  • Page 530: Ogic

    This corresponds to SEL-221G-5 setting 50L. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-221G-5. Time dial adjustments may be necessary. The SEL-221G-5 uses a circular out-of-step characteristic. The SEL-311C uses a quadrilateral out-of-step characteristic.
  • Page 531 Application Settings for SEL-221 Series Relays 14.15 SEL-221G-5 to SEL-311C Settings Conversion Guide Table 14.7 shows all SEL-221G-5 Relay Word bits, and an approximate equivalent SEL-311C SEL expression, when setting APP = 221G5 in the OGIC SEL-311C. Table 14.6 shows each SEL-221G-5 Mask Logic Setting and the equivalent SEL-311C SEL control equation.

  • Page 532: Table 14.8 Default Sel-221G-5 Mask Logic Setting For Mrc

    79DTL when APP = OGIC 221G5. When setting APP = 221G5, the SEL-311C automatically sets the following control equations. Change the settings just as you would change the OGIC Mask Logic settings in an SEL-221G-5 to customize the relay logic.
  • Page 533 0 (Reserved for MPT) SV2 = The following contact input assignments are made automatically by the SEL-311C when setting APP = 221G5. These assignments cannot be changed unless setting APP is changed back to APP = 311C. Default Contact Input Functions...

  • Page 534: Sel-221H To Sel-311C Settings Conversion Guide

    SEL settings are Boolean expressions OGIC used to customize the logic of the SEL-311C. To set the SEL-311C to emulate an SEL-221H, follow these four steps: Step 1. Turn on the SEL-221H application setting by making setting APP = 221H.

  • Page 535: Convert Sel-221H Settings To Sel-311C Settings

    =>> Convert SEL-221H All SEL-221H current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-221H current setting by the Primary Quantities to current transformer ratio setting (CTR) to make the change.
  • Page 536 14.20 Application Settings for SEL-221 Series Relays SEL-221H to SEL-311C Settings Conversion Guide Table 14.9 SEL-311C Settings Calculated From SEL-221H Settings (Sheet 2 of 3) SEL-311C SEL-311C Instruction SEL-221H Instruction Calculated From SEL-221H Settings Setting Manual Section Manual Section Z0MAG ----------- - •...

  • Page 537: Ogic

    This corresponds to SEL-221H setting 50L. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-221H. Time dial adjustments may be necessary. Convert SEL-221H See Programmable Output Contact Mask Settings in Section 5: Applications in the SEL-221H Instruction Manual for a description of output masks.

  • Page 538: Table 14.11 Sel Ogic Equivalent To Sel-221H Relay Word Bits

    14.22 Application Settings for SEL-221 Series Relays SEL-221H to SEL-311C Settings Conversion Guide Table 14.11 shows all SEL-221H Relay Word bits, and an approximate equivalent SEL-311C SEL expression, when setting APP = 221H in the OGIC SEL-311C. Table 14.10 shows each SEL-221H Mask Logic Setting and the equivalent SEL-311C SEL control equation.

  • Page 539: Table 14.12 Default Sel-221H Mask Logic Setting For Mpt

    TRCOMM when APP = OGIC 221H. When setting APP = 221H, the SEL-311C automatically sets the following control equations. Change the settings just as you would change the OGIC Mask Logic settings in an SEL-221H to customize the relay logic.
  • Page 540 SEL-221H to SEL-311C Settings Conversion Guide The following contact input assignments are made automatically by the SEL-311C when setting APP = 221H. These assignments cannot be changed unless setting APP is changed back to APP = 311C. Default Contact Input Functions...

  • Page 541: Sel-221F To Sel-311C Settings Conversion Guide

    SEL settings are Boolean expressions OGIC used to customize the logic of the SEL-311C. To set the SEL-311C to emulate an SEL-221F, follow these four steps: Step 1. Turn on the SEL-221F application setting by making setting APP = 221F.

  • Page 542: Convert Sel-221F Settings To Sel-311C Settings

    =>> Convert SEL-221F All SEL-221F current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-221F current setting by the Primary Quantities to current transformer ratio setting (CTR) to make the change.
  • Page 543 Application Settings for SEL-221 Series Relays 14.27 SEL-221F to SEL-311C Settings Conversion Guide Table 14.13 SEL-311C Settings Calculated From SEL-221F Settings (Sheet 2 of 3) SEL-311C SEL-311C Instruction SEL-221F Instruction Calculated From SEL-221F Settings Setting Manual Section Manual Section Z1ANG...

  • Page 544: Convert Sel-221F Output Mask Logic Settings To Sel Ogic Control Equations

    This corresponds to SEL-221F setting 50NG. SEL-221F function “Remote End Just Opened” (REJO) is not implemented in the SEL-311C. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-221F. Time dial adjustments may be necessary. Convert SEL-221F See Programmable Output Contact Mask Settings in Section 5: Applications in the SEL-221F Instruction Manual for a description of output masks.
  • Page 545 Application Settings for SEL-221 Series Relays 14.29 SEL-221F to SEL-311C Settings Conversion Guide Table 14.14 SEL-311C SEL Control Equation Equivalent to Each OGIC SEL-221F Mask Logic Setting (Sheet 2 of 2) SEL-221F Settings Mask SEL-311C SEL Control Equations OGIC OUT105...

  • Page 546: Table 14.16 Default Sel-221F Mask Logic Setting For Mrc

    This is the default SEL control equation for 79DTL when APP = 221F. OGIC When setting APP = 221F, the SEL-311C automatically sets the following control equations. Change the settings just as you would change the OGIC Mask Logic settings in an SEL-221F to customize the relay logic.

  • Page 547: Table 14.17 Sel-221F Setting Psvc For Settings P, S, And

    SET2 RST2 The following contact input assignments are made automatically by the SEL-311C when setting APP = 221F. These assignments cannot be changed unless setting APP is changed back to APP = 311C. Default Contact Input Functions Programmable Input (Direct Trip)

  • Page 548: Sel-221F-3 To Sel-311C Settings Conversion Guide

    SEL settings are Boolean expressions OGIC used to customize the logic of the SEL-311C. To set the SEL-311C to emulate an SEL-221F-3, follow these four steps: Step 1. Turn on the SEL-221F-3 application setting by making setting APP = 221F3.

  • Page 549: Convert Sel-221F-3 Settings To Sel-311C Settings

    =>> Convert SEL-221F-3 All SEL-221F-3 current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-221F-3 current setting by Primary Quantities to the current transformer ratio setting (CTR) to make the change.
  • Page 550 14.34 Application Settings for SEL-221 Series Relays SEL-221F-3 to SEL-311C Settings Conversion Guide Table 14.18 SEL-311C Settings Calculated From SEL-221F-3 Settings (Sheet 2 of 3) SEL-311C SEL-311C Instruction SEL-221F-3 Instruction Calculated From SEL-221F-3 Settings Setting Manual Section Manual Section Z1ANG...

  • Page 551: Convert Sel-221F-3 Output Mask Logic Settings To Sel Ogic Control Equations

    This corresponds to SEL-221F-3 setting 50NG. SEL-221F function “Remote End Just Opened” (REJO) is not implemented in the SEL-311C. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-221F-3. Time dial adjustments may be necessary. Convert SEL-221F-3 See Programmable Output Contact Mask Settings in Section 5: Applications in the SEL-221F-3 Instruction Manual for a description of output masks.
  • Page 552 14.36 Application Settings for SEL-221 Series Relays SEL-221F-3 to SEL-311C Settings Conversion Guide Table 14.19 SEL-311C SEL Control Equation Equivalent to Each OGIC SEL-221F-3 Mask Logic Setting SEL-221F-3 Settings Mask SEL-311C SEL Control Equations OGIC SV3 (DTT) SV4 (DTT) TRSOTF...

  • Page 553: Table 14.21 Default Sel-221F Mask Logic Setting For Mrc

    This is the default SEL control equation for 79DTL when APP = 221F3. OGIC When setting APP = 221F3, the SEL-311C automatically sets the following control equations. Change the settings just as you would change the OGIC Mask Logic settings in an SEL-221F-3 to customize the relay logic.

  • Page 554: Table 14.22 Sel-221F-3 Setting Psvc For Settings S, P, And E

    BFIN1 = Y SET3 RST3 The following contact input assignments are made automatically by the SEL-311C when setting APP = 221F3. These assignments cannot be changed unless setting APP is changed back to APP = 311C. Default Contact Input Functions IN101 =...

  • Page 555: Sel-221C To Sel-311C Settings Conversion Guide

    APP = 311C to APP = 221C changes settings in the SEL-311C. Changing from APP = 221C to APP = 311C makes more SEL-311C settings visible. The only settings that are modified are ESV, ELAT, and EDP. These three settings are set to their maximum value of 16 so that no hidden settings are modified.

  • Page 556: Application Settings

    =>> Convert SEL-221C All SEL-221C current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-221C current setting by the Primary Quantities to current transformer ratio setting (CTR) to make the change.
  • Page 557 Application Settings for SEL-221 Series Relays 14.41 SEL-221C to SEL-311C Settings Conversion Guide Table 14.24 SEL-311C Settings Calculated From SEL-221C Settings (Sheet 2 of 4) SEL-311C SEL-311C Instruction SEL-221C Instruction Calculated From SEL-221C Settings Setting Manual Section Manual Section Z0MAG ----------- - •...
  • Page 558 14.42 Application Settings for SEL-221 Series Relays SEL-221C to SEL-311C Settings Conversion Guide Table 14.24 SEL-311C Settings Calculated From SEL-221C Settings (Sheet 3 of 4) SEL-311C SEL-311C Instruction SEL-221C Instruction Calculated From SEL-221C Settings Setting Manual Section Manual Section 51PC...

  • Page 559: Convert Sel-221C Output Mask Logic Settings To Sel Ogic Control Equations

    This corresponds to SEL-221C setting 50L. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-221C. Time dial adjustments may be necessary. Convert SEL-221C See Programmable Output Contact Mask Settings in Section 5: Applications in the SEL-221C Instruction Manual for a description of output masks.

  • Page 560: Table 14.27 Default Sel-221C Mask Logic Setting For Mtu

    SEL control equation for TR when APP = 221C. OGIC When setting APP = 221C, the SEL-311C automatically sets the following control equations. Change the settings just as you would change the OGIC Mask Logic settings in an SEL-221C to customize the relay logic.
  • Page 561 Figure 14.3 shows the implementation of SEL-221C voltage supervised reclosing in the SEL-311C. These settings are made automatically by the SEL-311C when setting APP = 221C. These assignments cannot be changed unless setting APP is changed back to APP = 311C.

  • Page 562: Figure 14.3 Voltage Supervised Reclosing Logic

    Figure 14.3 Voltage Supervised Reclosing Logic The following contact input assignments are made automatically by the SEL-311C when setting APP = 221C. These assignments cannot be changed unless setting APP is changed back to APP = 311C. Default Input Logic Equations...

  • Page 563: Sel-221-16 To Sel-311C Settings Conversion Guide

    SEL-221-16 to SEL-311C Settings Conversion Guide SEL-221-16 to SEL-311C Settings Conversion Guide Set APP = 221-16 in the SEL-311C to configure the relay to closely approximate the features, performance, and settings of an SEL-221-16. When APP = 221-16, the SEL-311C: 1.

  • Page 564: Table 14.28 Sel-311C Settings Calculated From Sel-221-16 Settings

    =>> Convert SEL-221-16 All SEL-221-16 current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-221-16 current setting by Primary Quantities to the current transformer ratio setting (CTR) to make the change.
  • Page 565 Application Settings for SEL-221 Series Relays 14.49 SEL-221-16 to SEL-311C Settings Conversion Guide Table 14.28 SEL-311C Settings Calculated From SEL-221-16 Settings (Sheet 2 of 3) SEL-311C SEL-311C Instruction SEL-221-16 Instruction Calculated From SEL-221-16 Settings Setting Manual Section Manual Section Z1ANG...

  • Page 566: Ogic

    This corresponds to SEL-221-16 setting 50NG. SEL-221-16 function “Remote End Just Opened” (REJO) is not implemented in the SEL-311C. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-221-16. Time dial adjustments may be necessary. Convert SEL-221-16 See Programmable Output Contact Mask Settings in Section 5: Applications in the SEL-221-16 Instruction Manual for a description of output masks.

  • Page 567: Table 14.31 Default Sel-221-16 Mask Logic Setting For Mrc

    This is the default SEL control equation for 79DTL when APP = 221-16. OGIC When setting APP = 221-16, the SEL-311C automatically sets the following control equations. Change the settings just as you would change the OGIC Mask Logic settings in an SEL-221-16 to customize the relay logic.
  • Page 568 14.52 Application Settings for SEL-221 Series Relays SEL-221-16 to SEL-311C Settings Conversion Guide Default Tripping Logic Equations M1P + Z1G + M2PT + Z2GT + Z3T + 67G1 + 51GT + OC TR = TRSOTF = M1P + Z1G + M2PT + Z2GT + M3P + Z3G + Z3T + 67G1 + 51GT + 50P1...

  • Page 569: Sel-2Pg10 To Sel-311C Settings Conversion Guide

    SEL-2PG10 to SEL-311C Settings Conversion Guide SEL-2PG10 to SEL-311C Settings Conversion Guide Set APP = 2PG10 in the SEL-311C to configure the relay to closely approximate the features, performance, and settings of an SEL-2PG10. When APP = 2PG10, the SEL-311C: 1.

  • Page 570: Convert Sel-2Pg10 Settings To Sel-311C Settings

    =>> Convert SEL-2PG10 All SEL-2PG10 current settings must be converted from primary to secondary amps to be used in the SEL-311C. Divide the SEL-2PG10 current setting by Primary Quantities to the current transformer ratio setting (CTR) to make the change.
  • Page 571 SEL-311C phase-to-phase fault detector settings (50PP1) is set to its minimum value and hidden. This corresponds to SEL-2PG10 setting 50L. Curve U1 in the SEL-311C is slightly different from curve 1 in the SEL-2PG10. Time dial adjustments may be necessary. Instruction Manual...

  • Page 572: Ogic

    See Access Level 2 Commands in Section 4: Commands and Serial Communications in the SEL-2PG10 Instruction Manual for a description of Output Mask Logic output masks. In the SEL-311C, output masks are replaced by SEL OGIC Settings to SEL control equations as shown in Table 14.33.

  • Page 573: Table 14.35 Default Sel-2Pg10 Mask Logic Setting For Mt

    Application Settings for SEL-221 Series Relays 14.57 SEL-2PG10 to SEL-311C Settings Conversion Guide Table 14.35 Default SEL-2PG10 Mask Logic Setting for MT ZABC 67NP 67NT 67NI 67DT Default Tripping Logic Equations TR = MABC1 + MPP1 + 51GT + 67G1T + OC...
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  • Page 575: Sel-311C Settings Sheet Application Setting 221G

    Date _______________ SEL-311C Settings Sheet Application Setting 221G SET.1 of 6 SEL-311C Settings Sheet Application Setting 221G Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 576 SET.2 of 6 SEL-311C Settings Sheet Application Setting 221G Date________________ Zone 2 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Zone 3 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Mho Phase Distance Element Time Delays Zone 1 time delay (OFF, 0–16000 cycles)
  • Page 577 Date _______________ SEL-311C Settings Sheet Application Setting 221G SET.3 of 6 Out-of-Step block time delay (0.5–8000.0 cycles) OSBD Zone/Level 3 and 4 Directional Control Zone/Level 3 direction: Forward, Reverse (F, R) DIR3 Directional Elements (See Directional Control Settings on page 4.21)
  • Page 578 SET.4 of 6 SEL-311C Settings Sheet Application Setting 221G Date________________ Reclosing Relay Equations (See Reclosing Relay on page 6.11) Reclose initiate 79RI Drive-to-lockout 79DTL Torque Control Equations for Inst./Def.-Time Overcurrent Elements [Note: torque control equation settings cannot be set directly to logical 0.]...
  • Page 579 SEL Distributed Port Switch Protocol. Set FASTOP = Y to enable binary Fast Operate messages at the serial port. Set FASTOP = N to block binary Fast Operate messages. Refer to Appendix D for the description of the SEL-311C Relay Fast Operate commands.
  • Page 580 SET.6 of 6 SEL-311C Settings Sheet Application Setting 221G Date________________ Event Report Parameters (See Section 12: Standard Event Reports and SER) Length of event report (15, 30, 60, 180 cycles) Length of pre-fault in event report (1–14 cycles in 1-cycle steps for LER = 15) (1–29 cycles in 1-cycle steps for LER = 30)

  • Page 581: Sel-311C Settings Sheet Application Setting 221G-5

    Date _______________ SEL-311C Settings Sheet Application Setting 221G-5 SET.1 of 6 SEL-311C Settings Sheet Application Setting 221G-5 Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 582 SET.2 of 6 SEL-311C Settings Sheet Application Setting 221G-5 Date________________ Zone 2 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Zone 3 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Mho Phase Distance Element Time Delays Zone 2 time delay (OFF, 0–16000 cycles)
  • Page 583 Date _______________ SEL-311C Settings Sheet Application Setting 221G-5 SET.3 of 6 Zone/Level 3 and 4 Directional Control Zone/Level 3 direction: Forward, Reverse (F, R) DIR3 Directional Elements (See Directional Control Settings on page 4.21) Ground directional element priority: combination of Q, V, or I...
  • Page 584 SET.4 of 6 SEL-311C Settings Sheet Application Setting 221G-5 Date________________ Control Equation Variable Timers (See Figure 7.24 Figure 7.25) OGIC OGIC ® (SEL control equation settings consist of Relay Word bits [see Table 9.5] and SEL control.) OGIC SV1 Pickup Time (0.00–999999.00 cycles in 0.25-cycle steps) SV1PU SV1 Dropout Time (0.00–999999.00 cycles in 0.25-cycle steps)
  • Page 585 Set FASTOP = Y to enable binary Fast Operate messages at the serial port. Set FASTOP = N to block binary Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is available when PROTO = SEL or LMD. Instruction Manual SEL-311C Relay...
  • Page 586 SET.6 of 6 SEL-311C Settings Sheet Application Setting 221G-5 Date________________ Power System Configuration (See Settings Explanations on page 9.33) Phase rotation (ABC, ACB) PHROT Display Point Labels (See Rotating Default Display (Only on Models With LCD) on page 7.36 Rotating Default Display on page 11.12)

  • Page 587: Sel-311C Settings Sheet Application Setting 221H

    Date _______________ SEL-311C Settings Sheet Application Setting 221H SET.1 of 6 SEL-311C Settings Sheet Application Setting 221H Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 588 SET.2 of 6 SEL-311C Settings Sheet Application Setting 221H Date________________ Zone 2 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Zone 3 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Mho Phase Distance Element Time Delays Zone 2 time delay (OFF, 0–16000 cycles)
  • Page 589 Date _______________ SEL-311C Settings Sheet Application Setting 221H SET.3 of 6 Switch-Onto-Fault (See Figure 5.3) 52 A enable time delay 52AEND (OFF, 0.00–16000.00 cycles in 0.25-cycle steps) SOTF duration (0.50–16000.00 cycles in 0.25-cycle steps) SOTFD POTT Trip Scheme Settings (Also Used in DCUB Trip Schemes) (See Figure 5.6)
  • Page 590 SET.4 of 6 SEL-311C Settings Sheet Application Setting 221H Date________________ Control Equation Variable Timer Input Equations (See Figure 7.24 OGIC Figure 7.25) control equation Variable SV1 OGIC control equation Variable SV2 OGIC control equation Variable SV3 OGIC control equation Variable SV4...
  • Page 591 Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is available when PROTO = SEL or LMD. Power System Configuration (See Settings Explanations on page 9.33)
  • Page 592 This page intentionally left blank...

  • Page 593: Sel-311C Settings Sheet Application Setting 221F

    Date _______________ SEL-311C Settings Sheet Application Setting 221F SET.1 of 6 SEL-311C Settings Sheet Application Setting 221F Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 594 SET.2 of 6 SEL-311C Settings Sheet Application Setting 221F Date________________ Zone 3 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Mho Ground Distance Elements Zone 1 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; Z1MG 0.25–320.00 W secondary {1 A nom.}) (see Figure 3.7)
  • Page 595 Date _______________ SEL-311C Settings Sheet Application Setting 221F SET.3 of 6 Reclosing Relay (See Table 6.2 Table 6.3) Open interval 1 time 79OI1 (0.00–999999.00 cycles in 0.25-cycle steps) Reset time from reclose cycle 79RSD (0.00–999999.00 cycles in 0.25-cycle steps) Reset time from lockout 79RSLD (0.00–999999.00 cycles in 0.25-cycle steps)
  • Page 596 SET.4 of 6 SEL-311C Settings Sheet Application Setting 221F Date________________ Torque Control Equations for Inst./Def.-Time Overcurrent Elements [Note: torque control equation settings cannot be set directly to logical 0.] Level 1 residual ground (see Figure 3.22) 67G1TC Residual Ground (see Figure 3.25)
  • Page 597 Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is available when PROTO = SEL or LMD. Power System Configuration (See Settings Explanations on page 9.33)
  • Page 598 SET.6 of 6 SEL-311C Settings Sheet Application Setting 221F Date________________ Event Report Parameters (See Section 12: Standard Event Reports and SER) Length of event report (15, 30, 60, 180 cycles) Length of pre-fault in event report (1–14 cycles in 1-cycle steps for LER = 15) (1–29 cycles in 1-cycle steps for LER = 30)

  • Page 599: Sel-311C Settings Sheet Application Setting 221F-3

    Date _______________ SEL-311C Settings Sheet Application Setting 221F-3 SET.1 of 6 SEL-311C Settings Sheet Application Setting 221F-3 Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 600 SET.2 of 6 SEL-311C Settings Sheet Application Setting 221F-3 Date________________ Zone 3 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Mho Ground Distance Elements Zone 1 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; Z1MG 0.25–320.00 W secondary {1 A nom.}) (see Figure 3.7)
  • Page 601 Date _______________ SEL-311C Settings Sheet Application Setting 221F-3 SET.3 of 6 Synchronizing phase (VA, VB, VC, VAB, VBC, VAC) SYNCP Breaker close time for angle compensation TCLOSD (OFF, 1.00–60.00 cycles in 0.25-cycle steps) Reclosing Relay (See Table 6.2 Table 6.3)
  • Page 602 SET.4 of 6 SEL-311C Settings Sheet Application Setting 221F-3 Date________________ Set Latch Bit LT2 SET2 Reset Latch Bit LT2 RST2 Set Latch Bit LT3 SET3 Reset Latch Bit LT3 RST3 Torque Control Equations for Inst./Def.-Time Overcurrent Elements [Note: torque control equation settings cannot be set directly to logical 0.]...
  • Page 603 Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is available when PROTO = SEL or LMD.) Power System Configuration (See Settings Explanations on page 9.33)
  • Page 604 SET.6 of 6 SEL-311C Settings Sheet Application Setting 221F-3 Date________________ Display Point Labels (See Rotating Default Display (Only on Models With LCD) on page 7.36 Rotating Default Display on page 11.12) This application assumes that the user has programmed the text settings as indicated below.

  • Page 605: Sel-311C Settings Sheet Application Setting 221C

    Date _______________ SEL-311C Settings Sheet Application Setting 221C SET.1 of 6 SEL-311C Settings Sheet Application Setting 221C Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 606 SET.2 of 6 SEL-311C Settings Sheet Application Setting 221C Date________________ Zone 2 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Zone 3 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) Mho Phase Distance Element Time Delays Zone 3 time delay (OFF, 0–16000 cycles)
  • Page 607 Date _______________ SEL-311C Settings Sheet Application Setting 221C SET.3 of 6 Zone/Level 3 and 4 Directional Control Zone/Level 3 direction: Forward, Reverse (F, R) DIR3 Directional Elements (See Directional Control Settings on page 4.21) Ground directional element priority: combination of Q, V, or I...
  • Page 608 SET.4 of 6 SEL-311C Settings Sheet Application Setting 221C Date________________ SV9 Dropout Time (0.00–16000.00 cycles in 0.25-cycle steps) SV9DO Trip Logic Equations (See Figure 5.1) Direct trip conditions Switch-onto-fault trip conditions TRSOTF Direct transfer trip conditions Reclosing Relay Equations (See Reclosing Relay on page 6.11)
  • Page 609 Set FASTOP = Y to enable binary Fast Operate messages at the serial port. Set FASTOP = N to block binary Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is available when PROTO = SEL or LMD. Instruction Manual SEL-311C Relay...
  • Page 610 SET.6 of 6 SEL-311C Settings Sheet Application Setting 221C Date________________ Power System Configuration (See Settings Explanations on page 9.33) Phase rotation (ABC, ACB) PHROT Nominal frequency (50 Hz, 60 Hz) NFREQ Display Point Labels (See Rotating Default Display (Only on Models With LCD) on page 7.36...

  • Page 611: Sel-311C Settings Sheet Application Setting

    Date _______________ SEL-311C Settings Sheet Application Setting 221-16 SET.1 of 6 SEL-311C Settings Sheet Application Setting 221-16 Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 612 SET.2 of 6 SEL-311C Settings Sheet Application Setting 221-16 Date________________ Zone 3 (OFF, 0.05–64.00 Ω secondary {5 A nom.}; 0.25–320.00 Ω secondary {1 A nom.}) (See Figure 3.6) Mho Ground Distance Elements Zone 1 (OFF, 0.05–64.00 Ω secondary {5 A nom.};...
  • Page 613 Date _______________ SEL-311C Settings Sheet Application Setting 221-16 SET.3 of 6 SOTF duration (0.50–16000.00 cycles in 0.25-cycle steps) SOTFD Other Settings Minimum trip duration time TDURD (2.00–16000.00 cycles in 0.25-cycle steps) Control Equation Variable Timers (See Figure 7.24 Figure 7.25) OGIC SV1 Pickup Time (0.00–999999.00 cycles in 0.25-cycle steps)
  • Page 614 Set FASTOP = Y to enable binary Fast Operate messages at the serial port. Set FASTOP = N to block binary Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is available when PROTO = SEL or LMD. SEL-311C Relay Instruction Manual...
  • Page 615 Date _______________ SEL-311C Settings Sheet Application Setting 221-16 SET.5 of 6 Power System Configuration (See Settings Explanations on page 9.33) Phase rotation (ABC, ACB) PHROT Nominal frequency (50 Hz, 60 Hz) NFREQ Display Point Labels (See Rotating Default Display (Only on Models With LCD) on page 7.36...
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  • Page 617: Sel-311C Settings Sheet Application Setting 2Pg10

    Date _______________ SEL-311C Settings Sheet Application Setting 2PG10 SET.1 of 4 SEL-311C Settings Sheet Application Setting 2PG10 Identifier Labels (See Settings Explanations on page 9.33) Relay Identifier (30 characters) Terminal Identifier (30 characters) Current and Potential Transformer Ratios (See Settings Explanations on page 9.33)
  • Page 618 SET.2 of 4 SEL-311C Settings Sheet Application Setting 2PG10 Date________________ Residual Ground Inst./Def.-Time Overcurrent Element (See Figure 3.25) Level 1 (OFF, 0.25–100.00 A secondary {5 A nom.}; 50G1P 0.05–20.00 A secondary {1 A nom.}) Residual Ground Definite-Time Overcurrent Element Time Delay...
  • Page 619 Date _______________ SEL-311C Settings Sheet Application Setting 2PG10 SET.3 of 4 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Protocol Settings (See Below) Protocol (SEL, LMD, DNP, MBA, MBB, MB8A, MB8B, PROTO MBGA, MBGB) Set PROTO = SEL for standard SEL ASCII protocol. For SEL Distributed Port PROTOCOL SETTINGS: ITS ®...
  • Page 620 Fast Operate messages. Refer to Appendix D: Configuration, Fast Meter, and Fast Operate Commands for the description of the SEL-311C Relay Fast Operate commands. This setting is available when PROTO = SEL or LMD. Power System Configuration (See Settings Explanations on page 9.33)

  • Page 621: Appendix A: Firmware And Instruction Manual Versions

    The SEL-311C Relay provides a means of interpreting Firmware Identification Data (FID). The FID string is included near the top of each long event report. The string format follows: FID = SEL-311C - R[RN] - V[VS] - Z[ES] - D[RD] where: [RN] = Revision Number (e.g., 100) [VS] = Version Specification [ES] = External Software Version (e.g., 001001)
  • Page 622 LER is 30 cycles or more, and PRE is 15 cycles or more. This firmware differs from the previous versions as follows: ➤ SEL-311C-R108-V0-Z004003-D20030725 Corrected problem where Quadrilateral distance element 20030728 may overreach under specific conditions. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 623 Internal changes in firmware to support Flash memory revision. 20000619 This firmware differs from the previous versions as follows: ➤ SEL-311C-R100-V0-Z001001-D19991203 Manual Update Only—See Table A.3 for summary of manual 20000421 updates. ➤ SEL-311C-R100-V0-Z001001-D19991203 Original Firmware Release 19991201 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 624: Table A.2 Settings Change History

    Firmware and Instruction Manual Versions Firmware Table A.2 lists firmware versions for the SEL-311C, a description of the settings modifications, and the instruction manual date code that corresponds to firmware versions. The most recent firmware version is listed first. Table A.2 Settings Change History Manual Date Firmware Part/Revision No.

  • Page 625: Instruction Manual

    Added synchrophasor accuracy. ➤ Modified metering accuracy. Section 2 ➤ Modified Figure 2.1 SEL-311C Relay Dimensions and Panel-Mount Cutout to explain projection rack mounting option. ➤ Rotated the rear-panel drawing in Figure 2.3. ➤ Under IRIG-B Time-Code Input, added a note that the IRIG-B time signal does not update the relay internal year.
  • Page 626 Added [time] parameter to TRI command. Command Summary ➤ Updated to include all commands. Section 11 ➤ Corrected Figure 11.4 SEL-311C Front-Panel Pushbuttons—Secondary Functions. Section 12 ➤ Added a subsection, Make SER Settings With Care. ➤ Added P parameter to EVE command.
  • Page 627 20051215 Made typographical and proofreading corrections throughout the manual. Section 2 ➤ Corrected Figure 2.14, SEL-311C Provides Distance and Overcurrent Protection and Reclosing for a Transmission Line (Current-Polarization Source Connected to Channel IP). Section 3 ➤ Corrected Figure 3.4, Zone 1 AB Phase Distance Logic.
  • Page 628 ➤ Updated Three-Pole Open Logic (Top) and Switch-Onto-Fault Logic (Bottom) drawing. ➤ Updated POTT Logic drawing. ➤ Updated SEL-311C Relay Connections to Communications Equipment for a Three-Terminal Line DCB Scheme drawing. Section 7 ➤ Updated Input Debounce Timers section. ➤...
  • Page 629 This manual differs from the previous versions as follows: Appendix A 20010625 ➤ Modified SEL-311C relays to record consecutive event reports. ➤ Modified the SUM command so that the Breaker Status reports the status from the last row of the event report.
  • Page 630 Internal changes to support Flash memory revision and battery-backed clock hardware change. This manual differs from the previous versions as follows: Section 2 20000421 ➤ Switched JMP23 drawings in Table 2.3. 19991201 New Manual Release. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 631: Appendix B: Firmware Upgrade Instructions

    Serial communications cable (SEL Cable C234A or equivalent) ➤ Disk containing the firmware upgrade (.s19 or .exe) file ➤ Firmware Upgrade Instructions (these instructions) Optional Equipment These items help you manage relay settings and understand firmware upgrade procedures: Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 632: Upgrade Procedure

    1K Xmodem or Xmodem protocol. Step 1. Connect a serial communications cable to the computer serial port: a. Check the computer for a label identifying the serial communications ports. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 633: Figure B.1 Establishing A Connection

    The settings for the computer (Figure B.3) must match the relay settings you recorded earlier. a. Enter the serial port communications parameters (Figure B.3) that correspond to the relay settings you recorded in Step 9 on page Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 634: Figure B.3 Determining Communications Parameters For The Computer

    Press <Enter>. In the terminal emulation window, you should see the Access Level 0 = prompt, similar to that in Figure B.5. If this is successful, proceed to C. Save Settings and Other Data on page B.6. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 635: Failure To Connect

    Figure B.7. b. Change the settings in the appropriate list boxes to match the settings you recorded in Step 9 on page 2 click OK twice to return to the terminal emulation window. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 636: Figure B.7 Correcting The Communications Parameters

    7. Otherwise, perform the following BOOT steps: Step 1. From the Transfer menu in HyperTerminal, select Capture Text. Step 2. Enter a directory and filename for a text file where you will record the existing relay settings. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 637: Figure B.8 Preparing Hyperterminal For Id Command Display

    Append line feeds to incoming line ends. Figure B.8 Preparing HyperTerminal for ID Command Display e. Click OK twice to go back to the terminal emulation window. f. Type ID <Enter> and record the FID number the relay displays. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 638: Figure B.9 List Of Commands Available In Sel Boot

    ; Print this list FLASH Type : 040 Checksum = 370E Figure B.9 List of Commands Available in SEL BOOT Establish a High-Speed Connection Step 5. Type BAU 38400 <Enter> at the SEL !> prompt. BOOT SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 639: Figure B.10 Matching Computer To Relay Parameters

    Step 4. Select 1K Xmodem if this protocol is available on the PC. If the computer does not have 1K Xmodem, choose Xmodem. Step 5. Click Receive. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 640: Figure B.11 Example Receive File Dialog Box

    Download completed successfully! Figure B.13 Downloading Old Firmware F. Upload New Firmware Step 1. Prepare to load the firmware: a. Insert the disk containing the new firmware into the appropriate disk drive on the computer. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 641 If you see no indication of a transfer in progress within a few minutes after clicking Send, use the REC command again and reattempt the transfer. After the transfer completes, the relay displays the following: Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 642: Figure B.14 Selecting New Firmware To Send To The Relay

    Step 6. Press <Enter> and confirm that the Access Level 0 = prompt appears on the computer screen. Step 7. If you see the Access Level 0 = prompt, proceed to G. Check Relay Self-Tests on page SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 643: Table B.1 Troubleshooting New Firmware Upload

    Step 1. Type ACC <Enter>. Step 2. Type the Access Level 1 password and press <Enter>. You will see the Access Level 1 => prompt. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 644 Use a similar format for other password levels. SEL relay passwords are case sensitive, so the relay treats lowercase and uppercase letters as different letters. Step 4. Go to H. Verify Settings, Calibration, Status, Breaker Wear, and Metering on page SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 645 H. Verify Settings, Calibration, Status, Breaker Wear, and Metering Step 1. Use the ACC and 2AC commands with the associated passwords to enter Access Level 2. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 646: Figure B.16 Preparing Hyperterminal For Id Command Display

    For a mismatch between a displayed FID or part number, and the firmware envelope label, reattempt the upgrade or contact the factory for assistance. Step 5. Type STA <Enter> and verify that all relay self-test parameters are within tolerance. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 647: Factory Assistance

    The relay is now ready for your commissioning procedure. Factory Assistance We appreciate your interest in SEL products and services. If you have questions or comments, please contact us at: Schweitzer Engineering Laboratories, Inc. 2350 NE Hopkins Court Pullman, WA USA 99163-5603 Telephone: (509) 332-1890 Fax: (509) 332-7990 Internet: www.selinc.com...
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  • Page 649: Appendix C: Sel Distributed Port Switch Protocol (Lmd)

    SEL Distributed Port Switch Protocol (LMD) permits multiple SEL relays to share a common communications channel. It is appropriate for low-cost, low- speed port switching applications where updating a real-time database is not a requirement. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 650: Settings

    The range is 01 to 99. The default is 01. SETTLE: Time in seconds that transmission is delayed after the request to send (RTS line) asserts. This delay accommodates transmitters with a slow rise time. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 651: Operation

    6. Enter the sequence <Ctrl+X> QUIT <CR> before entering the prefix character if all relays in the multidrop network do not have the same prefix setting. Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 653: Appendix D: Configuration, Fast Meter, And Fast Operate Commands

    ASCII commands can also be accessed by a device that does not interleave the data streams. SEL Application Guide AG95-10: Configuration and Fast Meter Messages is a comprehensive description of the SEL binary messages. Below is a description of the messages provided in the SEL-311C Relay. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 654: Message Lists

    Response From Relay (ASCII) ASCII Firmware ID String and Terminal ID Setting (TID) ASCII Names of Relay Word bits ASCII Names of bits in the A5B9 Status Byte ASCII Names of strings in SER settings SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 655: Message Definitions

    Fast Meter command Length One status flag byte Scale factors in Fast Meter message No scale factors # of analog input channels # of samples per channel # of digital banks One calculation block Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 656 Scale factor offset in Fast Meter message 465245510000 Analog channel name (FREQ) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 564241540000 Analog channel name (VBAT) Analog channel type SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 657: A5D1 Fast Meter Data Block

    Messages Data Description A5C2 or A5C3 Command; Demand (A5C2) or Peak Demand (A5C3) Length # of status flag bytes Scale factors in meter message # of scale factors # of analog input channels Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 658 Scale factor offset in Fast Meter message 50432B000000 Analog channel name (PC+) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 50332B000000 Analog channel name (P3+) Analog channel type SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 659 Scale factor offset in Fast Meter message 51412D000000 Analog channel name (QA-) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message 51422D000000 Analog channel name (QB-) Analog channel type Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 660: A5D2/A5D3 Demand/Peak Demand Fast Meter Message

    A5B9 Fast Meter In response to the A5B9 request, the relay clears the Fast Meter (message A5D1) Status Byte. The SEL-311C Status Byte contains one active bit, Status Acknowledge STSET (bit 4). The bit is set on power up and on settings changes. If the...

  • Page 661: A5Ce Fast Operate Configuration Block

    Operate code, pulse remote bit RB9 Operate code, clear remote bit RB10 Operate code, set remote bit RB10 Operate code, pulse remote bit RB10 Operate code, clear remote bit RB11 Operate code, set remote bit RB11 Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 662: A5E0 Fast Operate Remote Bit Control

    4. The FASTOP port setting is set to Y. 5. The relay is enabled. Remote bit set and clear operations are latched by the relay. Remote bit pulse operations assert the remote bit for one processing interval (1/4 cycle). SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 663: A5E3 Fast Operate Breaker Control

    The relay performs the specified breaker operation if the following conditions are true: 1. Conditions 1–5 defined in the A5E0 message are true. 2. The breaker jumper (JMP2B) is in place on the SEL-311C main board. A5CD Fast Operate In response to an A5CD request, the relay sends the configuration block shown in Table D.11...

  • Page 664: A5Ed Fast Operate Reset Command

    = the Firmware identification string = the 4-digit hexadecimal checksum of the firmware = the text from the Relay Identification (RID) setting DEVID = the Modbus Device ID Code for the SEL-311C DEVCODE = the part number that matches the Model Option Table PARTNO...

  • Page 665: Bna Message

    In response to the BNA command, the relay sends names of the bits transmitted in the Status Byte in the A5D1 message. The first name is the MSB, the last name is the LSB. The BNA message is: <STX>"*","*","*","STSET","*","*","*","*","yyyy"<ETX> Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 666: Sns Message

    If there are more than eight settings in SER, the SNS message will have several rows. Each row will have eight strings, followed by the checksum and carriage return. The last row may have fewer than eight strings. SNS message for the SEL-311C is: <STX>"xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","yyyy"<CR> "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","yyyy"<CR>...

  • Page 667: Appendix E: Compressed Ascii Commands

    Appendix E Compressed ASCII Commands Overview The SEL-311C Relay provides Compressed ASCII versions of some relay ASCII commands. The Compressed ASCII commands allow an external device to obtain data from the relay, in a format which directly imports into spreadsheet or database programs, and which can be validated with a checksum.

  • Page 668: Cascii Command-General Format

    String of maximum m characters (e.g., 10S for a 10-character string "yyyy" is the 4-byte HEX ASCII representation of the checksum A Compressed ASCII command may require multiple header and data configuration lines. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 669 If a Compressed ASCII request is made for data that are not available, (e.g. the history buffer is empty or invalid event request), the relay responds with the following message: <STX>"No Data Available","0668"<CR><ETX> Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 670: Cascii Command-Sel-311C

    Compressed ASCII Commands CASCII Command—SEL-311C CASCII Command—SEL-311C Display the SEL-311C Compressed ASCII configuration message by sending: CAS <CR> The relay sends: <STX> "CAS",6,"01A9"<CR> "CST",1,"01B7"<CR> "1H","FID","022C"<CR> "1D","45S","0211"<CR> "7H","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","0BB9"<CR> "1D","I","I","I","I","I","I","I","05F4"<CR> "23H","IA","IB","IC","IP","VA","VB","VC","VS","MOF","+5V_PS","+5V_REG","-5V_REG", "+12V_PS","-12V_PS","+15V_PS","-15V_PS","TEMP","RAM","ROM","A/D","CR_RAM", "EEPROM","IO_BRD","271F"<CR> "1D","9S","9S","9S","9S","9S","9S","9S","9S","9S","9S","9S","9S","9S","9S","9S","9S" ,"9S", "9S","9S","9S","9S","9S","9S","1789"<CR> "CHI",1,"01A1"<CR> "1H","FID","022C"<CR> "1D","45S","0211"<CR> "16H","REC_NUM","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","EVENT", "LOCATION","CURR","FREQ","GROUP","SHOT","TARGETS","EVE_ID","1EF8"<CR> "44D","I","I","I","I","I","I","I","I","6S","F","I","F","I","I","22S","I","0D54"<CR>...
  • Page 671 "2D","1S","10S","02FE"<CR> <ETX> where: = the 4-byte hex ASCII representation of the checksum. "YYYY" CEVENT Command—SEL-311C on page E.8 for the definition of the “Names of elements in the relay word separated by spaces” field. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 672: Cstatus Command-Sel-311C

    Compressed ASCII Commands CSTATUS Command—SEL-311C CSTATUS Command—SEL-311C Display status data in Compressed ASCII format by sending: CST <CR> The relay sends: <STX>"FID","yyyy"<CR> "Relay FID string","yyyy"<CR> "MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,"yyyy"<CR> "IA","IB","IC","IP","VA","VB","VC","VS","MOF","+5V_PS","+5V_REG", "-5V_REG","+12V_PS","-12V_PS","+15V_PS","-15V_PS", "TEMP","RAM","ROM","A/D","CR_RAM","EEPROM","IO_BRD","yyyy"<CR> ,"xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","yyyy"<CR><ETX> where: = the data values corresponding to the first line labels.

  • Page 673: Chistory Command-Sel-311C

    Compressed ASCII Commands CHISTORY Command—SEL-311C CHISTORY Command—SEL-311C Display history data in Compressed ASCII format by sending: CHI <CR> The relay sends: <STX>"FID","yyyy"<CR> "Relay FID string","yyyy"<CR> "REC_NUM","MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC", "EVENT","LOCATION","CURR","FREQ","GROUP","SHOT","TARGETS","EVE_ID", "yyyy"<CR> xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,"xxxx",xxxx,xxxx,xxxx,xxxx,xxxx, "xxxx","xxxx","yyyy"<CR><ETX> (the last line is then repeated for each record) where: = the data values corresponding to the first line labels.

  • Page 674: Cevent Command-Sel-311C

    Compressed ASCII Commands CEVENT Command—SEL-311C CEVENT Command—SEL-311C Display event report in Compressed ASCII format by sending: CEV [n Sx Ly L R C P] (parameters in [ ] are optional) where: n = event number (1–43 if LER = 15; 1–25 if LER = 30; 1–13 if LER = 60;...
  • Page 675 <STX>"No Data Available","0668"<CR><ETX> The “Names of elements in the relay word separated by spaces” field is shown below for the SEL-311C. "EN TRP TIME COMM SOTF RCRS RCLO 51 A B C G ZONE1 ZONE2 ZONE3 ZONE4 M1P M1PT Z1G Z1GT...

  • Page 676: Table E.2 Mapping Bits To Labels

    E.10 Compressed ASCII Commands CEVENT Command—SEL-311C Each bit in the HEX-ASCII Relay Word reflects the status of a Relay Word bit. The order of the labels in the “Names of elements in the relay word separated by spaces” field matches the order of the HEX-ASCII Relay Word.

  • Page 677: Csu Command-Sel-311C

    Compressed ASCII Commands E.11 CSU Command—SEL-311C CSU Command—SEL-311C Display long summary event report in Compressed ASCII format by sending: CSU [N[EXT]] [TERSE] CSU [[ACK] | [TERSE]] [n] where: No parameters = Output the newest chronological event summary ACK = Acknowledge the oldest unacknowledged event report summary available on this port, or if a number is supplied, acknowledge the specified summary.
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  • Page 679: Appendix F: Setting Negative-Sequence Overcurrent Elements

    (transient condition lasts less than 1.5 cycles). For example, make time delay setting: 1.50 67Q1D = for negative-sequence definite-time overcurrent element 67Q1T. Refer to Figure 3.23 for more information on negative-sequence instantaneous and definite-time overcurrent elements. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 680: Setting Negative-Sequence Time-Overcurrent Elements

    …+ 51QT * SV6T +… (trip conditions; SV6T is the output of the TR = control equation variable timer SV6) OGIC 51QT * SV6T SV6PU I (3I Figure F.1 Minimum Response Time Added to a Negative-Sequence Time-Overcurrent Element 51QT SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 681: Other Negative-Sequence Overcurrent Element References

    This conference paper gives many good application examples for negative-sequence overcurrent elements. The focus is on the transmission system, where negative-sequence overcurrent elements provide better sensitivity than zero-sequence overcurrent elements in detecting some single-line-to-ground faults. Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 683: Appendix Gsel Synchrophasors

    Appendix G SEL Synchrophasors Overview The SEL-311C provides Phasor Measurement Control Unit (PMCU) capabilities when connected to an IRIG-B time source with an accuracy of ±10 µs or better. Synchrophasor data are available via the MET PM ASCII command and the SEL Fast Message Unsolicited Write message.

  • Page 684: Introduction

    The Port settings class selects which serial port(s) can be used for synchrophasor protocol use. Settings on page G.8. The SEL-311C timekeeping function generates status Relay Word bits that are important for synchrophasor measurement. See Synchrophasor Relay Word Bits on page G.11.

  • Page 685: Synchrophasor Measurement

    Synchrophasor values are available for the full frequency range of the SEL-311C. Figure G.1 Phase Reference The TSOK Relay Word bit asserts when the SEL-311C has determined that the IRIG-B time source has sufficient accuracy and the synchrophasor data meet the specified accuracy. Synchrophasors are still measured if the time...

  • Page 686: External Equipment Compensation

    Compensation Angle • 360° ⎛ ⎞ --------- - ⎝ ⎠ freq ∆t • freq • 360° Equation G.1 Imaginary A corrected Real Compensation Angle A measured Figure G.3 Correction of Measured Phase Angle SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 687: Protocol Operation

    The SEL-311C responds to configuration block request messages regardless of the present transmit status, waiting only as long as it takes for any partially sent messages to be completely transmitted.

  • Page 688: Table G.2 Unsolicited Fast Message Enable Packet

    (if an acknowledge was requested) and begin transmitting synchrophasors. If the requested message period is not permitted, the SEL-311C will respond with a bad data message (if an acknowledge was requested), and will not transmit any synchrophasor data.

  • Page 689: Table G.4 Permissible Message Periods Requested By Enable Message

    Number of Seconds After Messages per Minute the Top of Each Minute 0064h 0,1,2,3,4,5,…,59 00C8h 0,2,4,6,8,10,…,58 012Ch 0,3,6,9,12,15,…,57 0190h 0,4,8,12,15,…,56 01F4h 0,5,10,15,20,…,55 0258h 0,6,12,18,24,…,54 03E8h 0,10,20,30,40,50 05DCh 0,15,30,45 07D0h 0,20,40 0BB8h 0,30 1770h Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 690: Settings

    Table G.5. The Global enable setting EPMU must be set to Y before the remaining SEL-311C synchrophasor settings are available. No synchrophasor data collection can take place when EPMU = N. Use the serial port settings in Table G.6 to transmit data using the SEL Fast Message Synchrophasor protocol.

  • Page 691: Descriptions Of Synchrophasor Settings

    The ICOMP setting allows correction for any steady-state phase errors (from the current transformers or wiring characteristics). TS_TYPE This setting defines the type of connected clock. Instruction Manual SEL-311C Relay Date Code 20060320...
  • Page 692 UTC offset, time quality information, a year, and a parity bit. The SEL-311C qualifies the IRIG field to ensure that the time is valid, checks for a time quality value better than or equal to ±10us, and checks for the consistent parity.

  • Page 693: Synchrophasor Relay Word Bits

    Synchrophasor Relay Word Bits Synchrophasor Relay Word Bits The Time Synchronization Relay Word bits in Table G.7 indicate the present status of the timekeeping function of the SEL-311C. See IRIG-B on page 10.2. Table G.7 Time Synchronization Relay Word Bits...

  • Page 694: View Synchrophasors By Using The Met Pm Command

    Figure G.4. The MET PM [time] command can be used to direct the SEL-311C to display the synchrophasor for an exact specified time, in 24-hour format. For example, entering the command MET PM 14:14:12 will result in a response similar to Figure G.4...

  • Page 695: Figure G.4 Sample Met Pm Command Response

    Figure G.4 Sample MET PM Command Response The Maximum time synchronization error field is taken directly from the status field of the IRIG-B message. If TS_TYPE = IRIG, the maximum TQUAL time synchronization error will be displayed as $.$$$ Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 696: Communications Bandwidth

    19200 baud, to allow for the largest possible number of message period requests to be successful. The SEL-311C Fast Message synchrophasor format always includes 32 bytes for the message header and terminal ID, time information, frequency, and status bits.

  • Page 697: Appendix H: Setting Sel Ogic Control Equations

    Control Equation Settings (Serial Port OGIC Command SET L) on page SET.16). See SHO Command (Show/View Settings) on page 10.25 for a list of the factory settings included in a standard shipment of an SEL-311C Relay. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 698: Relay Word Bits

    Word bit 51PT is in the following state: 51PT = 0 (logical 0) If phase time-overcurrent element 51PT is timed out on its curve, Relay Word bit 51PT is in the following state: 51PT = 1 (logical 1) SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 699: Other Relay Word Bits

    Relay Word bit (e.g., 51PR) that asserts for the reset state of the element. Relay Word bits are used in SEL control equations, which are explained OGIC in the following subsection. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 700: Sel Ogic Control Equations

    OGIC setting. Control Equation NOT Operator ! OGIC The NOT operator ! is applied to a single Relay Word bit and also to multiple elements (within parentheses). Following are examples of both. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 701 OGIC Control Equations OGIC Example of NOT Operator ! Applied to Single Element The internal circuit breaker status logic in the SEL-311C operates on 52a circuit breaker auxiliary contact logic. The SEL control equation circuit OGIC breaker status setting is labeled 52A. See Optoisolated Inputs on page 7.3...
  • Page 702 ER to see each transition individually. Suppose a ground fault occurs and a breaker failure condition finally results. Figure H.1 demonstrates the action of the rising edge operator / on the individual elements in setting ER. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 703: Figure H.1 Result Of Rising Edge Operators On Individual Elements In Setting Er

    1 for one processing interval. For example, suppose the SEL control equation event report generation OGIC setting is set with the detection of the falling edge of an out-of-step block element: … + \OSB ER = Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 704: All Sel Ogic Control Equations Must Be Set

    OGIC 67P1TC through 51QTC for the overcurrent elements. In the factory settings included in a standard shipment of an SEL-311C, these are all set directly to logical 1. See these factory settings in SHO Command (Show/View Settings).

  • Page 705: Sel Ogic Control Equation Limitations

    OGIC settings are saved, the SEL-311C responds with the following message: xxx Elements and yy Edges remain available indicating that xxx Relay Word bits can still be used and yy rising or falling...

  • Page 706: Processing Order And Processing Interval

    (logical 1 or logical 0) until it is updated again in the next processing interval. Logical outputs of SEL control equations may be OGIC delayed by 1/4-cycle due to relay element processing order. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 707: Appendix Idnp Communications

    Appendix I DNP Communications Overview The SEL-311C family of relays are available with the option to support Distributed Network Protocol (DNP3) Level 2 Slave protocol. This includes access to metering data, protection elements (Relay Word), contact I/O, targets, sequential events recorder, breaker monitor, relay summary event reports, settings groups, and time synchronization.

  • Page 708: Configuration

    DCD indication. This allows RTS to be looped back to CTS in cases where the external transceiver does not support DCD. When the SEL-311C transmits a DNP message, it delays transmitting after asserting RTS by at least the time in the PREDLY setting.
  • Page 709 DCD indication. The timing is the same as above, but PREDLY functions as if it were set to 0, and RTS is not actually deasserted after the PSTDLY time delay expires. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 710: Data-Link Operation

    Set the data-link time-out long enough to allow for the worst-case response of the master plus transmission time. When the SEL-311C decides to transmit on the DNP link, it has to wait if the physical connection is in use.

  • Page 711: Data Access Method

    Table I.2 Data Access Methods Data Retrieval Method Description Relevant SEL-311C Settings Polled Static The master polls for static Set ECLASS = 0, (Class 0) data only.

  • Page 712: Dnp3 Documentation

    DNP3 device profile information. Rather than checkboxes in the example Device Profile in the DNP3 Subset Definitions, only the relevant selections are shown. Table I.3 SEL-311C DNP3 Device Profile (Sheet 1 of 2) Parameter Value Vendor name...

  • Page 713: Object Table

    In all cases within the device profile that an item is configurable, it is controlled by SEL-311C settings. Object Table The supported object, function, and qualifier code combinations are given by the following object table. Table I.4 SEL-311C Relay DNP Object Table (Sheet 1 of 4) Object Request (supported) Response (may generate) Function...
  • Page 714 DNP Communications DNP3 Documentation Table I.4 SEL-311C Relay DNP Object Table (Sheet 2 of 4) Object Request (supported) Response (may generate) Function Function Qualifier Qualifier Codes Obj. Var. Description Codes Codes Codes (hex) (hex) (decimal) (decimal) 32-Bit Frozen Counter With Time of...
  • Page 715 DNP Communications DNP3 Documentation Table I.4 SEL-311C Relay DNP Object Table (Sheet 3 of 4) Object Request (supported) Response (may generate) Function Function Qualifier Qualifier Codes Obj. Var. Description Codes Codes Codes (hex) (hex) (decimal) (decimal) 32-Bit Analog Input Without Flag...

  • Page 716: Data Map

    13,14,23 Default Data Map Each version of the SEL-311C has a slightly different data map. The following is the default object map supported by the SEL-311C wye-connected PTs (FID = SEL-311C-Rxxx-VM-Dxxxxxxxx). Table I.5 SEL-311C-Wye DNP Data Map (Sheet 1 of 3)
  • Page 717 DNP Communications I.11 DNP3 Documentation Table I.5 SEL-311C-Wye DNP Data Map (Sheet 2 of 3) Index Description Object Type 10,12 Reset demand peaks. 10,12 Reset energies. 10,12 Reset breaker monitor. 10,12 Reset front-panel targets. 10,12 Read next relay event. 10,12 24–31...
  • Page 718 I.12 DNP Communications DNP3 Documentation Table I.5 SEL-311C-Wye DNP Data Map (Sheet 3 of 3) Index Description Object Type 30,32 63–66 A-, B-, C-, and 3-phase demand MW in. 30,32 67–70 A-, B-, C-, and 3-phase demand MVAR in. 30,32 71–74...
  • Page 719 Pulse RB13 Pulse RB14 Pulse RB13 Pulse RB14 Pulse RB13 Pulse RB16 Pulse RB15 Pulse RB16 Pulse RB15 Pulse RB16 Pulse RB15 Pulse CC Pulse OC Pulse CC Pulse OC Pulse CC Pulse OC Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 720: Relay Summary Event Data

    The event summary analogs will retain this information until the next event is loaded. If no further event summaries are available, attempting to load the next event will cause the event type analog (point 103) to be set to 0. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 721 112 28 17 \<CR> 35 1 56 57 58 59 60 61 62 63 64 65 66 67 100 101 102 \<CR> 103<CR> ==>DNP B Enter the new DNP Binary map <CR> ==> Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 723: Settings Sheet-Dnp Port-Set P

    Address of master to Report to (0–65534) REPADR Number of events to transmit on (1–200) NUMEVE = Age of oldest event to force transmit on, seconds (0.0–60.0) AGEEVE Time-out for confirmation of unsolicited message, UTIMEO seconds (0–50) Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 725: Appendix J: Mirrored Bits Communications

    The information exchanged can facilitate remote control, remote sensing, or communications-assisted protection schemes such as POTT, DCB, etc. The SEL-311C Relay supports two M IRRORED IMPORTANT: Do not connect an unconfigured port to a M channels, differentiated by the channel specifiers A and B.

  • Page 726: Operation

    The SEL-321 processes power system information each 1/8-power system cycle, but processes the pickup/dropout security counters as messages are received. Since the SEL-321 is receiving messages from the SEL-311C, it will receive a message per 1/4-cycle processing interval. So a counter set to two will again delay a bit by about 1/2 cycle.

  • Page 727: Synchronization

    Communications IRRORED Operation security counter set to two on the SEL-311C will delay a bit by 1/4 cycle, because the SEL-311C is receiving new M messages each IRRORED 1/8 cycle from the SEL-321. Synchronization When a node detects a communications error, it deasserts ROKx and transmits an attention message, which includes its TXID setting.
  • Page 728 CBADx with other alarm conditions using SEL control OGIC will assert a user-accessible flag, hereafter called RBADx. equations. When channel unavailability exceeds a user-settable threshold, the relay will assert a user accessible flag, hereafter called CBADx. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 729: Mirrored Bits

    M communications using this IRRORED specification. The relay sets RTS (to a positive voltage at the EIA-232 connector) for M communications IRRORED using the R6 or original R version of M IRRORED Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 730: Settings

    COMM records. See the COM command in the SEL-321 Instruction Manual or COM Command (Communication Data) on page 10.16 for a description of the COMM records. SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 731 IRRORED enabled or disabled on a group-by-group basis, minimizing nuisance communications alarms. Set M Enable setting EMBA or EMBB IRRORED to Y in order to enable M communication for that group. IRRORED Instruction Manual SEL-311C Relay Date Code 20060320...
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  • Page 733: Appendix K: Unsolicited Fast Ser Protocol

    Commands. Devices with embedded processing capability can use these messages to enable and accept unsolicited Fast SER messages from the SEL-311C Relay. SEL relays and communications processors have two separate data streams that share the same serial port. The normal serial interface consists of ASCII character commands and reports that are intelligible to people using a terminal or terminal emulation package.

  • Page 734: Make Sequential Events Recorder (Ser) Settings With Care

    “writes.” Exceeding the limit can result in an EEPROM self-test failure. An average of four state changes per minute can be made for a 25-year relay service life. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 735: Recommended Message Usage

    Data Transfer” message to enable the SEL-311C to transmit unsolicited Fast SER messages. 2. When SER records are triggered in the SEL-311C, the relay responds with an unsolicited Fast SER message. If this message has a valid checksum, it must be acknowledged by sending an acknowledge message with the same response number as contained in the original message.

  • Page 736: Functions And Function Codes

    SEL-311C to begin sending unsolicited data to the device Enable Unsolicited which sent the enable message, if the SEL-311C has such data to transfer. The Data Transfer, Sent message format for function code 01 is shown in Table K.1.

  • Page 737: 02-Function Code: Disable Unsolicited Data Transfer, Sent From Master To Relay

    Unsolicited Fast SER Protocol Functions and Function Codes 02-Function Code: This function disables the SEL-311C from transferring Fast SER data. The message format for function code 02 is shown in Table K.2. Disable Unsolicited Data Transfer, Sent Table K.2 Message Format for Function Code 02...

  • Page 738: Table K.4 Format Of Message If Ser Records Have Been Lost

    Two-byte day of year (1–366) of overflow message generation yyyy Two-byte, four-digit year (e.g., 1999 or 07CF hex) of overflow message generation. mmmmmmmm Four-byte time of day in milliseconds since midnight FFFFFFFE Four-byte end-of-records flag SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 739: Acknowledge Message Sent From Master To Relay, And From Relay To Master

    Response number (XX = 00, 01, 02, 03, 00, 01, ...) must match response number from message being acknowledged. cccc Two byte CRC-16 checkcode for message The SEL-311C supports the response codes shown in Table K.6. Table K.6 Response Codes Response Success.
  • Page 740 16 seconds. The relay always requests acknowledgment in Fast SER messages (LSB of the status byte is set). Fast SER messages can be enabled on multiple ports simultaneously. SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 741: Appendix L: Quickset Sel-5030 Software

    Appendix L QuickSet SEL-5030 Software ERATOR Overview ERATOR ® QuickSet SEL-5030 Software is an easy-to-use yet powerful tool to help get the most out of your SEL-311C Relay. Using the QuickSet software, you will be able to: ERATOR ➤ ®...

  • Page 742: Ac Sel Erator Quickset System Requirements

    Windows NT4 SP3 or later with 32 MB RAM (64 MB RAM recommended) Windows 2000 with 64 MB RAM Disk Space 25 MB Communications EIA-232 serial port for communicating with the relay CD Drive Required for installation SEL-311C Relay Instruction Manual Date Code 20060320...

  • Page 743: Installation

    If you do not see the toolbar buttons: Step 1. Run the 40ComUpd.exe, located in the install directory. This file will install the proper windows system drivers. Instruction Manual SEL-311C Relay Date Code 20060320...

  • Page 744: Ac Sel Erator

    ERATOR Step 1. Double-click the QuickSet software icon if you ERATOR have a desktop shortcut. Step 2. Choose Programs > SEL Applications and select the QuickSet software icon to start the program. ERATOR SEL-311C Relay Instruction Manual Date Code 20060320...
  • Page 745 SEL-311C Relay Command Summary Access Level 0 The only thing that can be done at Access Level 0 is to go to Access Level 1. The screen Command prompt is: = Enter Access Level 1. If the main board password jumper is not in place, the relay prompts for entry of the Access Level 1 password in order to enter Access Level 1.
  • Page 746 SEL-311C Relay Command Summary Access Level 1 The Access Level 1 commands primarily allow the user to look at information (e.g., settings, Commands metering), not change it. The screen prompt is: => EVE C n Show compressed event report number n for use with SEL-5601 Analytic Assistant.
  • Page 747 SEL-311C Relay Command Summary Access Level B Access Level B commands primarily allow the user to operate output contacts. All Access Level 1 Commands commands can also be executed from Access Level B. The screen prompt is: ==> BRE n Enter BRE W to preload breaker wear.
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