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Sel -787 Instruction Manual

Sel -787 Instruction Manual

Transformer protection relay
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Table of Contents

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Instruction Manual
SEL-787 Relay
Transformer Protection Relay
Instruction Manual
20150130
*PM787-01-NB*

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MARIA GONZALEZ
January 29, 2025

I need to get a manual in order to how select a relay 787, I want to select SEL 0787EX1X1A9X75850231

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Summary of Contents for Sel SEL-787

  • Page 1 Instruction Manual SEL-787 Relay Transformer Protection Relay Instruction Manual 20150130 *PM787-01-NB*...
  • Page 2 © 2006–2015 by Schweitzer Engineering Laboratories, Inc. All rights reserved. All brand or product names appearing in this document are the trademark or registered trademark of their respective holders. No SEL trademarks may be used without written permission. SEL products appearing in this document may be covered by U.S. and Foreign patents.

  • Page 3: Table Of Contents

    Front-Panel Settings (SET F Command)....................... 4.97 Report Settings (SET R Command) ......................4.108 DNP Map Settings (SET DNP n Command, n = 1, 2, or 3)..................4.110 Modbus Map Settings (SET M Command)....................4.111 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 4 SEL-787 Settings Sheets Section 7: Communications Overview ................................. 7.1 Communications Interfaces ..........................7.1 Communications Protocols..........................7.10 SEL ASCII Protocol and Commands ......................7.14 Section 8: Front-Panel Operations Overview ................................. 8.1 Front-Panel Layout ............................8.1 Human-Machine Interface..........................8.2 Operation and Target LEDs ........................... 8.12 Section 9: Analyzing Events Overview .................................
  • Page 5 Table of Contents Appendix C: SEL Communications Processors SEL Communications Protocols........................C.1 SEL Communications Processor ........................C.3 SEL Communications Processor and Relay Architecture ................C.5 Appendix D: DNP3 Communications Overview ................................ D.1 Introduction to DNP3 ............................. D.1 DNP3 in the SEL-787............................. D.6 DNP3 Documentation ..........................D.13 Appendix E: Modbus RTU Communications Overview .................................E.1...
  • Page 6 This page intentionally left blank...
  • Page 7 List of Tables Instruction Manual Table 1.1 SEL-787 Serial Port Settings....................1.6 Table 2.1 Power Supply Card Inputs Terminal Designation ..............2.4 Table 2.2 Communication Ports......................2.4 Table 2.3 Communication Card Interfaces and Connectors..............2.5 Table 2.4 6 ACI Current Card Inputs Terminal Designation ..............2.6 Table 2.5...
  • Page 8 Table 6.6 Setting Interdependency Error Messages ................6.6 Table SET.1 Port Number Settings That Must be Unique ..............SET.39 Table 7.1 SEL-787 Communications Port Interfaces................7.1 Table 7.2 EIA-232/EIA-485 Serial Port Pin Functions ................. 7.7 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 9 Table 7.55 VEC Command ........................7.44 Table 8.1 Front-Panel Automatic Messages (FP_AUTO := OVERRIDE) ..........8.3 Table 8.2 Front-Panel Pushbutton Functions ..................8.5 Table 8.3 Possible Warning Conditions (Flashing TRIP LED) ............8.13 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 10: Firmware

    SEL Communications Processor Port 1 Settings ..............C.7 Table C.5 SEL Communications Processor Data Collection Automessages..........C.7 Table C.6 SEL Communications Processor Port 1 Automatic Messaging Settings .......C.8 Table C.7 SEL Communications Processor Port 1 Region Map ............C.8 Table C.8 Communications Processor METER Region Map..............C.9 Table C.9...
  • Page 11 ACSI Basic Conformance Statement ................... F.35 Table F.31 ACSI Models Conformance Statement ................F.35 Table F.32 ACSI Services Conformance Statement................F.37 Table H.1 PMU Settings in the SEL-787 for C37.118 Protocol in Global Settings ......H.4 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 12 List of Tables Table H.2 SEL-787 Serial Port Settings for Synchrophasors ..............H.5 Table H.3 Synchrophasor Order in Data Stream (Voltages and Currents)..........H.7 Table H.4 User-Defined Analog Values Selected by the NUMANA Setting ........H.7 Table H.5 User-Defined Digital Status Words Selected by the NUMDSW Setting ......H.8 Table H.6...

  • Page 13: Overview

    With REF (Restricted Earth Fault) Protection ..............2.27 Figure 2.22 SEL-787 Provides Two-Winding Transformer Differential Protection With REF and Voltage-Based Protection ................2.28 Figure 2.23 SEL-787 Provides Autotransformer Differential Protection, Including REF Protection ..2.29 Figure 2.24 Example DC Connections ....................... 2.30 Figure 3.1 Serial Port Communication Dialog Box ..................
  • Page 14 Example 1 for WnCTC Selection .................... 4.19 Figure 4.9 Example 2 for WnCTC Selection .................... 4.21 Figure 4.10 SEL-787 Differential Characteristics (Preferred and Other)........... 4.23 Figure 4.11 REF Directional Element......................4.30 Figure 4.12 REF1 Enable Logic........................4.31 Figure 4.13 REF1 Directional Element ...................... 4.31 Figure 4.14 REF Element Trip Output......................
  • Page 15 Ethernet Network Configuration With Ring Structure (Switched Mode) ......... 7.4 Figure 7.4 IRIG-B Input (Relay Terminals B01–B02) ................7.5 Figure 7.5 IRIG-B Input Via EIA-232 Port 3 (SEL Communications Processor as Source) ..... 7.6 Figure 7.6 IRIG-B Input Via EIA-232 Port 3 (SEL-2401/2404/2407 Time Source)........7.6 Figure 7.7 IRIG-B Input VIA Fiber-Optic EIA-232 Port 2 (SEL-2030/2032 Time Source)......

  • Page 16: Overview

    Figure 7.13 SEL Cable C272A—SEL-787 to SEL Communications Processor (Without IRIG-B Signal) .......................7.9 Figure 7.14 SEL Cable C273A—SEL-787 to SEL Communications Processor (With IRIG-B Signal)..7.9 Figure 7.15 SEL Cable C387—SEL-787 to SEL-3010 ................7.9 Figure 7.16 Ethernet Port (PORT 1) Status Report ..................7.24 Figure 7.17 Non-Redundant Port Response ....................7.24...
  • Page 17 Multitiered SEL Communications Processor Architecture ............C.4 Figure C.3 Enhancing Multidrop Networks With SEL Communications Processors .........C.6 Figure C.4 Example of SEL Relay and SEL Communications Processor Configuration ......C.7 Figure D.1 Application Confirmation Timing With URETRY n = 2............D.7 Figure D.2 Message Transmission Timing ....................
  • Page 18 This page intentionally left blank...

  • Page 19: Instruction Manual

    Describes the procedure to update the firmware stored in flash memory. Appendix C: SEL Communications Processors. Provides examples of how to use the SEL-787 with the SEL Communications Processors for total substation automation solutions. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 20 Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury or equipment damage. Safety Symbols The following symbols are often marked on SEL products. CAUTION ATTENTION Refer to accompanying documents. Se reporter à la documentation.
  • Page 21 Plage de température de fonctionnement : –40°C à +85°C (–40°F to +185°F). (–40°F à +185°F). Hazardous Locations Operating Temperature Range: Emplacements Plage de température de fonctionnement –20°C to +40°C (–4°F to +104°F). d’emplacements dangereux : –20°C à +40°C (–4°F à +104°F). Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 22 Dans le cas contraire, un accès non- unauthorized access. SEL shall not be responsible for any damage autorisé á l’équipement peut être possible. SEL décline toute resulting from unauthorized access.
  • Page 23 If your Raccordez-vous correctement à la terre, ainsi que la surface de travail facility is not equipped to work with these components, contact SEL et l’appareil avant d’en retirer un panneau. Si vous n’êtes pas équipés about returning this device and related SEL equipment for service.
  • Page 24 Examples This instruction manual uses several example illustrations and instructions to explain how to effectively operate the SEL-787. 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-787.
  • Page 25 820 nm Source Connector type Typical Output power –15.7 dBm –16 dBm The following figure shows the LED location specific to the SEL-787 (see Figure 2.9 for the complete rear-panel drawing). Fiber-Optic PORT 1A PORT 1B PORT 3 PORT 2...
  • Page 26 Instructions for Use a mild soap or detergent solution and a damp cloth to carefully clean the SEL-787 chassis when necessary. Avoid using abrasive materials, polishing Cleaning and compounds, and harsh chemical solvents (such as xylene or acetone) on any Decontamination surface of the relay.

  • Page 27: Specifications

    All relay models provide monitoring functions. This manual contains the information needed to install, set, test, operate, and maintain any SEL-787. You need not review the entire manual to perform specific tasks. For additional technical references on applications and testing (i.e., technical papers, application guides), visit www.selinc.com/literature/.

  • Page 28: Models, Options, And Accessories

    Models, Options, and Accessories Models Complete ordering information is not provided in this instruction manual. See the latest SEL-787 Model Option Table at www.selinc.com, under SEL Literature, Ordering Information (Model Option Tables). Options and accessories are listed below. ➤...
  • Page 29 ➢ DNP3 serial and LAN/WAN ➢ Simple Network Time Protocol (SNTP) Accessories Contact your Technical Service Center or the SEL factory for additional detail and ordering information for the following accessories: ➤ External RTD protection ➢ SEL-2600 RTD Module (with ST option only) ➢...

  • Page 30: Applications

    SEL-787 effectively. This section presents the fundamental knowledge Logic setting changes, the user may you need to operate the SEL-787, organized by task. These tasks help you have to wait as long as two minutes before an additional setting change become familiar with the relay and include the following: can occur.

  • Page 31: Figure 1.1 Response Header

    The SEL-787 base model has two EIA-232 serial communications ports. The following steps require PC terminal emulation software and an SEL Cable Communication C234A (or equivalent) to connect the SEL-787 to the PC. See Section 7: Communications for further information on serial communications connections and the required cable pinout.

  • Page 32: Table 1.1 Sel-787 Serial Port Settings

    T_OUT HWDR HAND- RTSCTS SHAKING Checking Use the STA serial port command to view the SEL-787 operational status. Analog channel dc offset and monitored component status are listed in the Relay Status status report depicted in Figure 1.2. =>>STA <Enter>...

  • Page 33: Figure 1.3 Sta Command Response-With Devicenet Communications Card

    DAT (Date Command) Viewing the Date Type DAT <Enter> at the prompt to view the date stored in the SEL-787. If the date stored in the relay is February 28, 2008, and the DATE_F setting is MDY, the relay will reply:...
  • Page 34 Introduction and Specifications Getting Started TIM (Time Command) Viewing the Time Enter TIM at the prompt to view the time stored in the SEL-787. The relay will reply with the stored time: 13:52:44 This time is 1:52 p.m. (and 44 seconds).
  • Page 35 VA Rating: 3600 VA, cos = 0.3 Power Consumption: <20 W (dc) Electrical Durability Break Interruptions: 10 ms @ 24 Vdc VA Rating: 360 VA, cos = 0.3 50 ms @ 48 Vdc Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 36 Fiber-Optic Ports Characteristics voltage: 4 mA (at 48–125 V) Port 1 (or 1A, 1B) Ethernet 10 mA (at 24 V) Wavelength: 1300 nm Rated Impulse Withstand Voltage (U 4000 V Optical Connector Type: SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 37 Communications Protocols 40°C, 93% relative humidity, 4 days Damp Heat, Cyclic: IEC 60068-2-30:2005 SEL, Modbus, DNP, FTP, TCP/IP, Telnet, SNTP, IEC 61850, M IRRORED , EVMSG, C37.118 (synchrophasors), and DeviceNet. See 25–55°C, 6 cycles, 95% relative Table 7.3 for details.
  • Page 38 0.10–19.20 A, 0.01 A steps Pickup/Dropout Time: <1.5 cycle Accuracy: ±5% of setting plus ±0.02 • I Time Delay: 0.0–120.0 seconds, 0.1 second steps secondary (Steady State pickup) Accuracy: ±0.5% plus ±0.25 cycle SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 39 0.0–240.0 seconds, 0.1 second steps Accuracy: ±0.5% plus ±0.25 cycle Frequency (81) (requires ac voltage option) Setting Range: Off, 20.0–70.0 Hz Accuracy: ±0.01 Hz (V1 > 60 V) with voltage tracking Pickup/Dropout Time: <4 cycles Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 40 This page intentionally left blank...

  • Page 41: Overview

    SEL-787. Use these drawings as a starting point for planning your particular relay application. The instructions for using the versatile front-panel custom label option are available on the SEL-787 product page on the SEL website. This allows you to OGIC ® use SEL control equations and slide-in configurable front-panel labels to change the function and identification of target LEDs.

  • Page 42: Figure 2.1 Relay Panel-Mount Dimensions

    Your SEL-787 offers flexibility in tailoring I/O to your specific application. In total, the SEL-787 has six rear-panel slots, labeled as Slots A, B, C, D, E, and Z. Slots A, B, and Z are base unit slots, each associated with a specific function.

  • Page 43: Figure 2.2 Slot Allocations For Different Cards

    Ethernet port (P1). IRIG-B is also supported via fiber-optic serial port (PORT 2) and rear-panel EIA-232 serial port (PORT 3). You can use only one input at a time. Digital or analog. Available in firmware releases R104 or greater and R203 and greater Figure 2.2 Slot Allocations for Different Cards Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 44: Table 2.1 Power Supply Card Inputs Terminal Designation

    Select the appropriate digital input voltage option: 125 Vdc/Vac, 24 Vdc/Vac, 48 Vdc/Vac, 110 Vdc/Vac, 220 Vdc/Vac, or 250 Vdc/Vac. This card is supported in Slot A (Slot 1) of the SEL-787 relay. It has two digital inputs and three digital outputs (two normally open Form-A contact outputs and one Form-C output).

  • Page 45: Table 2.3 Communication Card Interfaces And Connectors

    Simple Network Time Protocol (SNTP) ➤ ➤ Telnet Port 2 and Port 3 support the following protocols: ➤ Modbus RTU Slave ➤ SEL ASCII and Compressed ASCII ➤ SEL Fast Meter ➤ SEL Fast Operate ➤ SEL Fast SER ➤...

  • Page 46: Table 2.4 6 Aci Current Card Inputs Terminal Designation

    Current Card (6 ACI) Supported in Slot Z only, this card provides Winding 1 and Winding 2 current inputs for three-phase CTs. With this card installed, the SEL-787 samples the currents 16 times per cycle. You can order the following secondary current...

  • Page 47: Table 2.5 1 Aci/3 Avi Or 1 Aci Current/Voltage Card Inputs Terminal Designation

    A I_0 1 15, 16 AIx04, Transducer Input number x04 A I_02 A I_03 A I_04 x=3, 4, or 5 (for example, AI401, AI402, etc., if the card was installed in Slot D). Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 48: Table 2.7 I/O (3 Di/4 Do/1 Ao) Card Terminal Allocation

    Side-Panel Terminal speed hybrid) connections are Description polarity neutral. Connections Label Number 01, 02 OUTx01, driven by OUTx01 SEL OGIC OUT_0 1 control equation NOTE: Analog output is self powered and has an isolated power supply. 03, 04 OUTx02, driven by OUTx02 SEL...

  • Page 49: Table 2.9 Four Digital Input/Four Digital Output (4 Di/4 Do) Card Terminal Allocation

    (including high-current, high- Side-Panel Terminal Description speed hybrid) connections are polarity Connections Label Number neutral. 01, 02 OUTx01, driven by OUTx01 SEL OGIC OUT_0 1 control equation 03, 04 OUTx02, driven by OUTx02 SEL OGIC OUT_02 control equation OUT_03...

  • Page 50: Table 2.11 Four Digital Inputs, One Form-B Digital Output, Two Form-C Digital Outputs (4 Di/3Do) Card Terminal Allocation

    The SEL-787 offers flexibility in tailoring I/O to your specific application. The SEL-787 has six rear-panel slots, labeled as Slots A, B, C, D, E, and Z. Slots A, B, and Z are base unit slots, each associated with a specific function.
  • Page 51 Step 6. Before reattaching the rear cover, check for and remove any foreign material that may remain inside the SEL-787 case. Step 7. Carefully reattach the rear cover. Step 8. Tighten the eight (8) screws that secure the rear cover to the case.
  • Page 52 If not, reenable it. Refer to Relays With IEC 61850 Option in Appendix B: Firmware Upgrade Instructions, for the verification process. 4. Save all the settings and event reports before replacing the card. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 53: Figure 2.3 Circuit Board Of Analog I/O Board, Showing Jumper Selection

    Figure 2.4 shows the locations of JMP1 through JMP4 on an analog output board. You can select each of the four analog output channels as either a 4 AO Card) Voltage/ current analog output or a voltage analog output. Current Jumper Selection Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 54: Figure 2.4 Jmp1 Through Jmp4 Locations On 4 Ai/4 Ao Board

    The current analog output selection is the default setting for JMP1 pins 5 and 6 for a voltage analog output selection. through JMP4. Figure 2.6 shows JMP1 selected as a voltage analog output. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 55: Figure 2.5 Current Output Jumpers

    Jumper BOOT Pins labeled A bypass the password requirement, pins labeled B enable breaker control, and pins labeled C force the relay to the SEL operating system called . In the unlikely event that the SEL-787 experiences an internal BOOT failure, communication with the relay may be compromised.

  • Page 56: Table 2.12 Jumper Functions And Default Positions

    I/O Configuration the relay to SEL , place the jumper in Position C, as shown in Figure 2.7 BOOT (SEL Forced). After the relay is forced to SEL , you can only BOOT BOOT communicate with it via the front-panel port.

  • Page 57: Figure 2.8 Rear-Panel Connections Of Selected Cards

    Card 11: Main Board With Dual Copper Ethernet, Fiber-Optic Serial, and EIA-232 Rear Ports Card 12: Two Digital Input/Three Digital Output Power Supply Card (2 DI/3 DO) Figure 2.8 Rear-Panel Connections of Selected Cards Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 58: Figure 2.9 Dual-Fiber, Ethernet, Eia-232 Communication, 3 Di/4 Do/1 Ao, And Current/Voltage (1 Aci/3 Avi) Option

    Rear-Panel Connections Rear-Panel Connections Rear-Panel and Side- The physical layout of the connectors on the rear-panel and side-panel diagrams of three sample configurations of the SEL-787 are shown in Panel Diagrams Figure 2.9, Figure 2.10, and Figure 2.11. PORT 1A...

  • Page 59: Figure 2.11 Devicenet, Fast Hybrid 4 Di/4 Do, And Current/Voltage Option

    For compliance with IEC 60947-1 and IEC 60947-3, place a suitable external switch or circuit breaker in the power leads for the SEL-787; this device CAUTION should interrupt both the hot (+/H) and neutral (-/N) power leads. The...

  • Page 60: Figure 2.12 Control I/O Connections-4 Ai/4 Ao Option In Slot D And Fiber-Optic Port In Slot B

    Port 3 have an external IRIG-B input at terminals B01 and B02. SEL-787 relays with an EIA-232 serial port option for Port 3 have the IRIG-B available in the EIA-232 port and can be connected to an SEL communications processor.

  • Page 61: Table 2.13 Typical Maximum Rtd Lead Length

    • The fiber-optic serial port is located on the card in Slot B. A Simplex 62.5/125 µm fiber-optic cable is required to connect the SEL-787 with an SEL-2600 series RTD Module. This fiber-optic cable should be 1000 meters or shorter.

  • Page 62: Figure 2.15 Output Out103 Relay Output Contact Configuration

    ➤ The relay coil is energized continuously if the SEL-787 is powered and operational. ➤ When the SEL-787 generates a trip signal, the relay coil is de- energized. ➤ The relay coil is also de-energized if the SEL-787 power supply voltage is removed or if the SEL-787 fails (self-test status is FAIL).

  • Page 63: Figure 2.17 Single-Phase Voltage Connections

    Single Phase-to-Neutral VT Connection SEL-787 Single Phase-to-Phase VT Connection SEL-787 Note: The VT secondary circuit should be grounded in the relay cabinet. Figure 2.17 Single-Phase Voltage Connections Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 64: Figure 2.18 Voltage Connections

    Note: For open-delta VT connections, the figure shows grounding Phase B (E02). You can choose to ground Phase A or Phase C instead of Phase B, but the jumper between terminals E02 and E04 must remain as is. Figure 2.18 Voltage Connections SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 65: Figure 2.19 Typical Current Connections

    Transformer application. Figure 2.20 through Figure 2.23 show connection diagrams for various applications. Wye-connected PTs are shown in Figure 2.22; see Figure 2.17 and Figure 2.18 for other voltage connections. Refer to Figure 2.24 for an example of dc connections for these applications SEL-787 Relay IAW1 52-1 IBW1...

  • Page 66: Figure 2.20 Sel-787 Provides Basic Two-Winding Transformer Differential Protection

    Note: The CT secondary circuit must be grounded in the relay cabinet. The basic application of the SEL-787 relay is for a two-winding transformer. The SEL-787 base product offering provides six current channels that are used to monitor the two transformer windings. Relay contact inputs can be used to monitor high- and low-side breaker status.

  • Page 67: Figure 2.21 Sel-787 Provides Two-Winding Transformer Differential Protection With Ref (Restricted Earth Fault) Protection

    (REF) of grounded wye transformer winding. Refer to Figure 2.24, which illustrates tripping control of the two-power circuit breakers. Figure 2.21 SEL-787 Provides Two-Winding Transformer Differential Protection With REF (Restricted Earth Fault) Protection Date Code 20150130...

  • Page 68: Figure 2.22 Sel-787 Provides Two-Winding Transformer Differential Protection With Ref And Voltage-Based Protection

    Note: The CT secondary circuit must be grounded in the relay Installing the optional 1 ACI/3 AVI voltage/current card in Slot E of the SEL-787 provides neutral current and REF protection, as well as three-phase voltage inputs. These voltage inputs provide the relay with 20.0 to 70.0 Hz frequency tracking, over-/undervoltage elements, frequency elements, power elements, and volts-per-hertz protection of the transformer.

  • Page 69: Figure 2.23 Sel-787 Provides Autotransformer Differential Protection, Including Ref Protection

    This figure shows an autotransformer application with REF protection applied through the optional 1 ACI current input card in Slot E of the relay. In this application, the SEL-787 provides full differential protection, and uses the sum of the high- and low-voltage winding currents to calculate the zero-sequence currents necessary for REF protection.

  • Page 70: Figure 2.24 Example Dc Connections

    2.30 Installation AC/DC Control Connection Diagrams Figure 2.24 Example DC Connections SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 71: Field Serviceability

    2.31 Field Serviceability Field Serviceability The SEL-787 firmware may be upgraded in the field; refer to Appendix B: Firmware Upgrade Instructions for firmware upgrade instructions. You may know when a self-test failure has occurred by configuring an output contact to...
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  • Page 73: Table 3.1 Sel Software Solutions

    Settings Database Management QuickSet uses a database to manage the settings of multiple devices. ERATOR Terminal Provides a direct connection to the SEL device. Use this feature to ensure proper communications and directly interface with the device. Help Provides general QuickSet and device-specific QuickSet context.

  • Page 74: Figure 3.1 Serial Port Communication Dialog Box

    PC Software Setup Setup Follow the steps outlined in Section 2: Installation to prepare the SEL-787 for use. Perform the following steps to initiate communications: Step 1. Connect the appropriate communications cable between the SEL-787 and the PC. Step 2. Apply power to the SEL-787.

  • Page 75: Figure 3.2 Serial Port Communication Parameters Dialog Box

    Step 5. For network communications, check the Use Network check box and enter the network parameters as shown in Figure 3.3. Figure 3.3 Network Communication Parameters Dialog Box Step 6. Exit the menus by clicking OK when finished. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 76: Figure 3.4 Tools Menu

    "DEVID=SEL-787","03D0" "DEVCODE=71","030F" "PARTNO=0787EX1B0X0X7585023X","073D" "CONFIG=11111201","03EB" "iedName =TEMPLATE","0380" "type =SEL-787","028F" "configVersion =ICD-787-R100-V0-Z001001-D20080326","0629" => Figure 3.5 Device Response to the ID Command Locate and record the Z number (Z001001) in the FID string. The first portion of the Z number (Z001…) determines the...

  • Page 77: Settings Database Management And Drivers

    The default database file already configured in ERATOR QuickSet is Relay.rdb. This database contains example settings files for the SEL products with which you can use QuickSet. ERATOR Step 2. Enter descriptions for the database and for each relay or relay in the database in the Database Description and Settings Description dialog boxes.

  • Page 78: Settings

    Open an existing record, create and open a New record, or Read relay settings from a connected SEL-787 and then create and open a new record. Use Tools menu to Convert and open an existing record. The record will be opened in the Setting Editor as a Setting Form (template) or in Editor Mode.

  • Page 79: Table 3.3 File/Tools Menus

    FID string to create a particular version of settings. To get started making SEL-787 settings with the Settings Editor in the Editor Mode, select File > New from the main menu bar, and SEL-787 and 001 from the Settings Editor Selection window as shown in Figure 3.6.

  • Page 80: Figure 3.8 New Setting Screen

    Transfer Status window appears. QuickSet uses ERATOR serial protocols to read settings from SEL devices. Tools > Convert Use the Convert menu item to convert from one settings version to another. Typically, this utility is used to upgrade an existing settings file to a newer version because devices are using a newer version number.

  • Page 81: Figure 3.9 Expressions Created With Expression Builder

    (Logic Settings > performance. QuickSet simplifies this process with the ERATOR Enable) before using OGIC Expression Builder, a rules-based editor for programming SEL control Expression Builder. OGIC equations. The Expression Builder organizes device elements, analog quantities, and SEL control equation variables.

  • Page 82: Figure 3.10 Composite Screens For Retrieving Events

    QuickSet has integrated analysis tools that help you retrieve ERATOR information about relay operations quickly and easily. Use the event information that the SEL-787 stores to evaluate the performance of a system (select Tools > Events > Get Event Files). Figure 3.10 shows composite screens for retrieving events.

  • Page 83: Figure 3.11 Saving The Retrieved Event

    View Event Files function from the Tools > Events menu to select the event you want to view ( QuickSet remembers the location ERATOR where you stored the previous event record). Use View Combined Event Files to simultaneously view as many as three separate events. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 84: Figure 3.12 Device Overview Screen

    After double-clicking on the text, a box with available Relay Word bits appears in the lower left corner of the screen. Select the appropriate Relay Word bit, and click the Update button to assign the Relay Word bit to SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 85: Figure 3.13 Control Screen

    SER, trigger events, and reset metering data. IRRORED You can also reset the targets, synchronize with IRIG, and set the time and date. The Through-Fault Event (TFE) Monitor Pre-load can be entered here also. Figure 3.13 Control Screen Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 86: Figure 3.14 Remote Operation Selection

    Select Help > Settings Help from the from the main menu bar. Database Manager Select Help from the bottom of the Database Manager window. Communications Parameters Select Help from the bottom of the Communication Parameters window. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 87: Overview

    Instruction Manual Overview NOTE: Each SEL-787 is shipped with This section describes the SEL-787 Transformer Protection Relay settings, default factory settings. Calculate the including the protection elements and basic functions, control I/O logic, as settings for your application to ensure well as the settings that control the communications ports and front-panel secure and dependable protection.

  • Page 88: Table 4.1 Identifier Settings

    (see Figure G.1). Communications), or the Ethernet port (see Section 7: Communications). Application Data It is faster and easier for you to calculate settings for the SEL-787 if you collect the following information before you begin: ➤ Power transformer data: MVA rating, winding configurations...

  • Page 89: Table 4.2 Configurations And Ratings (Phase Cts, Power Transformer)

    Set VWDG1 and VWDG2 equal to the nominal line-to-line transformer terminal voltages of Winding 1 and Winding 2 respectively. If the transformer differential zone includes a load tap-changer, assume that it is in the neutral position. The setting units are kilovolts. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 90: Table 4.3 Configurations And Ratings (Optional Neutral Ct, Phase Pt)

    A-phase input, but it may be an A-N or an A-B voltage. Be sure to set DELTA_Y equal to WYE for an A-N input or DELTA_Y equal to DELTA for an A-B input voltage. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 91: Basic Protection

    Operating Characteristic The SEL-787 has three differential elements (87R-1, 87R-2, and 87R-3). These elements employ Operate (IOP) and Restraint (IRT) quantities that the relay calculates from the winding input current. Figure 4.1 shows the relay characteristic.

  • Page 92: Figure 4.1 Percentage Restraint Differential Characteristic

    I1W1C1, I2W1C1, and I3W1C1 are the fundamental frequency A-phase, B- phase, and C-phase compensated currents for Winding 1. Similarly, I1W1C2, I2W1C2, and I3W1C2 are the second-harmonic compensated currents for Winding 1. The fourth-harmonic and fifth-harmonic compensated currents use SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 93: Figure 4.2 Winding 1 Compensated Currents

    Figure 4.3 illustrated how the IOP1 (operate), IRT1 (restraint), I1H24 quantity IRTn calculation differs from (harmonic restraint), I1H2 (second harmonic), I1H4 (fourth harmonic), and the SEL-587 and SEL-387 by a factor I1H5 (fifth harmonic) quantities are calculated for the 87-1 element. IOP1 is of 2.

  • Page 94: Figure 4.3 Differential Element (87-1) Quantities

    Use these elements to protect your transformer bushings and end windings while maintaining security for inrush and through-fault conditions. Operating current elements 87On (87O1, 87O2, 87O3) are not available as Relay Word bits. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 95: Figure 4.4 Differential Element Decision Logic

    (PCT2 or PCT4) threshold values, i.e., the thresholds are treated as independent measurements of each harmonic value. For harmonic restraint, the values of the second- and fourth-harmonic currents are summed, Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 96: Figure 4.5 Differential Element Harmonic Blocking Logic

    The blocking prevents improper tripping during transformer inrush or allowable overexcitation conditions. The SEL-787 uses common (cross-phase) blocking. Common blocking prevents all restrained elements (87Rn) from tripping if any blocking element is picked up.

  • Page 97: Figure 4.6 Differential Current Alarm Logic Diagram

    O87P must be greater than or equal to the minimum of 0.1 • INOMn/TAPn, where n = 1, 2. The SEL-787 includes a differential current alarm feature. Set the 87AP level above the highest expected differential current under normal operations (typically lower than O87P) setting) and a security delay 87AD.
  • Page 98 This even-harmonic current can be used to identify the inrush phenomenon and to prevent relay misoperation. The SEL-787 measures the amount of second-harmonic and fourth-harmonic currents flowing in the transformer. You can set the relay to...

  • Page 99: Table 4.4 Differential Element Settings

    Differential Element Settings in SEL-787, SEL-387, and SEL-587 The SEL-787 restraint quantity IRTn calculation differs from the SEL-587 and SEL-387 by a factor of 2. To achieve the same characteristics for the differential elements in the SEL-787, SEL-387, and SEL-587, we must account for this factor of 2.
  • Page 100 Thus, for WnCTC = 11, the relay uses the following [CTC(m)] matrix: 1 0 –1      ------ - CTC 11 –1 1 0 0 –1 1 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 101 (One might also use WnCTC = 1 or 11 for this same application, yielding compensation similar to that from connection of the CTs on both sides in DAB or DAC.) Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 102 WnCTC settings for different transformer connections. Winding Connection Review Figure 4.7 shows the three basic winding connections, consisting of a wye connection and the two possible delta connections. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 103: Figure 4.7 Winding Connections, Phase Shifts, And Compensation Direction

    In the DAC connection the line currents from the A, B, and C line terminals are, respectively, A-C, B-A, and C-B in terms of the winding currents. The phase shift produced by each physical type of delta depends on the system phase sequence. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 104 Two examples illustrate important points about the five steps. For an additional resource, see the “Winding Compensation Settings Worksheet” (SEL_WCTC_R1_0.xls, available on the SEL-787 Product Literature CD). Step 1. Establish the phase direction for the terminal-A line voltage for each three-phase winding of the transformer.

  • Page 105: Figure 4.8 Example 1 For Wnctc Selection

    360 degrees, as the reference. Both windings would then receive adjustments to correlate them with this reference. As Figure 4.8 illustrates, Winding 1 direction serves as reference in this example. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 106 SEL-787. The transformer has a 115 kV primary winding that is wye connected, with wye-connected CTs. The 34.5 kV secondary winding is DAB connected, but designated with the A line terminal at the “7 o’clock”...

  • Page 107: Figure 4.9 Example 2 For Wnctc Selection

    WnCTC settings for different transformer connections. Refer to Table 4.5 for the preferred compensation settings that provide better security over the other combinations for external faults. Although these are preferred settings, if your application requires a different Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 108: Table 4.5 Preferred Compensation Settings (W1Ctc And W2Ctc)

    W1CTC = 0 (delta side of transformer) and W2CTC = 1 (wye side of the transformer); this combination, Case 1, provides adequate restraint current and prevents the undesired operation. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 109: Figure 4.10 Sel-787 Differential Characteristics (Preferred And Other)

    IRT3 = 10.47 IOP3 = 0.31 IRT3 = 0.31 Figure 4.10 SEL-787 Differential Characteristics (Preferred and Other) Winding Line-to-Line Voltages Enter the nominal line-to-line transformer terminal voltages. If a load tap changer is included in the transformer differential zone, assume that it is in the neutral position.
  • Page 110 (slope must exceed that for security) and what slope ratio is characteristic of an internal fault (the slope must be below that for dependability). In the case of the SEL-787 Relay, the slope ratio for a bolted internal fault is 100%.
  • Page 111 = slope ratio that will just accommodate Err with no margin Err = amount of error expected in normal operation k = AVERAGE restraint scaling factor (1 for the SEL-787) The variable restraint characteristic provided by SLP2 at high multiples of TAP for a through fault accommodates transient CT error.
  • Page 112 TH5P  minimum (0.05 •INOMn/TAPn) where: n = 1, 2 and INOMn is nominal current of corresponding CT Example of Setting the SEL-787 Relay The example represents a typical transformer application and demonstrates the use of CT compensation settings and tap calculations.
  • Page 113 The relay will check to see if a violation of the maximum tap ratio has occurred, and will notify you of the violation. Step 6. Set the differential element characteristic. Select the settings according to our suggestions in the earlier setting descriptions. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 114 It is vital that you select adequate current transformers for a transformer differential application. Use the following procedure, based on ANSI/IEEE Standard C37.110: 1996, IEEE Guide for the Application of Current Transformers Used for Protective Relaying Purposes. SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 115 Use separate relay restraint circuits for each power source to the relay. In the SEL-787 you may apply two restraint inputs to the relay. You may connect CT secondary windings in parallel only if both circuits meet the following criteria: ➤...

  • Page 116: Figure 4.11 Ref Directional Element

    CTs cancel out all zero-sequence components of the currents, eliminating one of the quantities the REF element needs for comparison. The SEL-787 has one REF element, REF1. The settings are identified in Table 4.6. The operating quantity associated with the REF1 element is tied to the relay input IN1 (E09–E10) as identified in Table 2.5.

  • Page 117: Figure 4.12 Ref1 Enable Logic

    IGWPU1, and asserts 50GREF1 if the measured quantity exceeds the threshold. The 0.8 multiplier secures the operation of the REFF1 element by ensuring that 50GREF1 always asserts before 50NREF1. If 50NREF1, 50GREF1, and the SEL torque control, REF1TC, all evaluate to logical 1, OGIC then the output REF1E is asserted.

  • Page 118: Figure 4.14 Ref Element Trip Output

    REF1F to torque control an inverse-time curve for delayed tripping, as discussed in the following text. Figure 4.16 shows the output of the REF1 protection function. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 119: Table 4.6 Restricted Earth Fault Settings

    The setting REF1POL tells the relay which winding or combination of windings it should use in calculating residual current, which acts as the polarizing quantity for the corresponding directional element, Figure 4.13. The setting REF1TC is a SEL control equation setting that defines the OGIC conditions under which the relay enables the corresponding REF1 element.

  • Page 120: Table 4.7 Winding N Maximum Phase Overcurrent Settings (N = 1 Or 2)

    Table 4.7 through Table 4.9 and in Figure 4.19. Each element can be torque controlled using appropriate SEL control OGIC equations (e.g., when 50P11TC := IN401, the 50P11 element will be operational only if IN401 is asserted).
  • Page 121 SEL-787 relay set above eight times the relay current input rating (40 A in a 5 A relay), the overcurrent element also operates on the output of a bipolar peak detector if the current waveform is highly distorted, as is the case with severe CT saturation.

  • Page 122: Figure 4.19 Instantaneous Overcurrent Element Logic

    CT saturation, the phase overcurrent elements operate on the output of the peak detector. When the harmonic distortion index is below the fixed threshold, the phase overcurrent elements operate on the output of the cosine filter. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 123: Table 4.8 Winding N Residual Overcurrent Settings (N = 1, 2)

    Also, you can use the 51_MR if you want to ensure the curve times no faster than a minimum response time. Each element can be torque controlled using appropriate SEL equations OGIC (e.g., when 51P1TC := IN401, the 51P1P element is operational only if IN401...

  • Page 124: Table 4.10 Winding N Maximum Phase Time-Overcurrent (N = 1 Or 2)

    Switch Position 51PnRS = Reset Timing Logical 1 Closed Electromechanical Logical 0 Open 1 Cycle Note: n = 1 or 2 (Winding 1 or 2). Figure 4.20 Maximum Phase Time-Overcurrent Elements 51P1T and 51P2T SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 125: Table 4.11 Winding N Phase A, B, And C Time-Overcurrent (N = 1 Or 2)

    PHASE TOC LVL OFF, 0.50–16.00 A 51PnCP := OFF 0.10–3.20 A PHASE TOC CURVE U1, U2, U3, U4, U5, 51PnCC := U3 C1, C2, C3, C4, C5 PHASE TOC TDIAL 0.50–15.00 51PnCTD := 3.00 0.05–1.00 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 126: Table 4.12 Residual Time-Overcurrent Settings (N = 1 Or 2)

    Setting State Switch Position 51GnRS = Reset Timing Logical 1 Closed Electromechanical Logical 0 Open 1 Cycle Note: 51G1T element shown above; 51G2T is similar. Figure 4.22 Residual Time-Overcurrent Elements 51G1T and 51G2T SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 127: Table 4.13 Winding N Negative-Sequence Time-Overcurrent Settings (N = 1, 2)

    OFF, 0.50–96.00 A 50N11P := OFF 0.10–19.20 A NEUT IOC DELAY 0.00–5.00 sec 50N11D := 0.50 NEUT IOC TRQCTRL 50N11TC := 1 OGIC NEUT IOC LEVEL OFF, 0.50–96.00 A 50N12P := OFF 0.10–19.20 A Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 128: Table 4.15 Neutral Time-Overcurrent Settings

    Figure 4.24 Neutral Time-Overcurrent Elements 51N1T and 51N2T Relay Word Bit ORED51T Relay Word bit ORED51T is asserted if any of the relay word bits 51P1T, 51P2T, 51G1T, 51G2T, 51Q1T, 51Q2T, OR 51N1T are asserted. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 129: Table 4.16 Equations Associated With U.s. Curves

    = electromechanical induction-disk emulation reset time in seconds (if you select electromechanical reset setting) TD = time-dial setting ), M 1] M = applied multiples of pickup current [for operating time (t ), M >1; for reset time (t Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 130: Figure 4.25 U.s. Moderately Inverse Curve: U1

    6 7 8 9 .5 .6 .7 .8 .9 1 5 6 7 8 9 Multiples of Pickup Multiples of Pickup Figure 4.27 U.S. Very Inverse Curve: U3 Figure 4.28 U.S. Extremely Inverse Curve: U4 SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 131: Figure 4.29 U.s. Short-Time Inverse Curve: U5

    .5 .6 .7 .8 .9 1 6 7 8 9 Multiples of Pickup Multiples of Pickup Figure 4.31 IEC Class B Curve (Very Inverse): C2 Figure 4.32 IEC Class C Curve (Extremely Inverse): C3 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 132: Table 4.18 Rtd Settings

    RTD Input Function When you connect an SEL-2600 RTD Module (set E49RTD := EXT) or order the internal RTD card (set E49RTD := INT) option, the SEL-787 offers several protection and monitoring functions, settings for which are described in Table 4.18. See Figure 2.12 for the RTD module fiber-optic cable connections If relay does not have internal or external RTD inputs, set E49RTD := NONE.

  • Page 133: Table 4.19 Rtd Resistance Versus Temperature

    ➤ 10-ohm copper (CU10) RTD Trip/Warning Levels The SEL-787 provides temperature warnings and trips through use of the RTD temperature measurements and the warning and trip temperature settings in Table 4.18. The relay issues a temperature warning if any of the healthy RTDs indicates a...

  • Page 134: Table 4.20 Undervoltage Settings

    PHASE UV LEVEL OFF, 12.5–300.0 V 27P1P := OFF PHASE UV DELAY 0.0–120.0 sec 27P1D := 0.5 PHASE UV LEVEL OFF, 12.5–300.0 V 27P2P := OFF PHASE UV DELAY 0.0–120.0 sec 27P2D := 5.0 SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 135: Table 4.21 Overvoltage Settings

    NSEQ OV DELAY 0.0–120.0 sec 59Q2D := 5.0 When you connect the SEL-787 voltage inputs to phase-to-phase connected VTs (single-phase or three-phase), as in Figure 2.17 or Figure 2.18, the relay provides two levels of phase-to-phase overvoltage and undervoltage elements.

  • Page 136: Figure 4.36 Overvoltage Element Logic

    When this happens, stray flux is induced in nonlaminated components, Elements causing overheating. In the SEL-787 Relay a volts/hertz element detects overexcitation. The SEL-787 provides a sensitive definite time volts/hertz element, plus a tripping element with a composite operating time. The relay calculates the present transformer volts/hertz as a percent of nominal, based on the present and nominal voltages and frequencies.

  • Page 137: Figure 4.37 V/Hz Element Logic

    For volts/hertz tripping the relay provides a time-integrating element with a settable operating characteristic. You can set the element to operate as an inverse-time element; a user-defined curve element (using the SEL-5806 PC Software); a composite element with an inverse-time characteristic and a definite-time characteristic;...

  • Page 138: Figure 4.38 Dual-Level Volts/Hertz Time-Delay Characteristic, 24Ccs = Dd

    Transformer Limit Curve on Generator Voltage Base Generator Manufacturer's Recommended Protection Curve 24D2P2 = 118% 24D2D2 = 1.2 s Relay Characteristic 24IP=108% .001 1000 Time (Minutes) Figure 4.39 Composite Inverse/Definite-Time Overexcitation Characteristic, 24CCS = ID SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 139: Table 4.22 Volts Per Hertz Settings

    105 percent, but less than the minimum pickup of the Level 2 element. Use a 24D1D time delay of 1.0 second to allow time for correction of an overexcitation condition prior to an alarm. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 140 When 24CCS := U the element operates with a user-defined inverse-time characteristic with a pickup of 24IP. The user curve should be set using SEL-5806 PC Software. This program handles individual mapping of points to make a curve that matches any transformer characteristic. It also handles all relay communication by either uploading the current curve or programming a new curve.

  • Page 141: Figure 4.41 Volts/Hertz Inverse-Time Characteristic, 24Ic

       24IP    ----------- -          1.414 24ITD seconds if V/Hz 1.5 24IP Figure 4.40 Volts/Hertz Inverse-Time Characteristic, 24IC = 0.5 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 142     24IP   ----------- -          2.0 24ITD seconds if V/Hz 1.5 24IP Figure 4.41 Volts/Hertz Inverse-Time Characteristic, 24IC = 1 SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 143: Figure 4.42 Volts/Hertz Inverse-Time Characteristic, 24Ic = 2

       24IP    ----------- -          if V/Hz 1.5 24IP 4.0 24ITD seconds Figure 4.42 Volts/Hertz Inverse-Time Characteristic, 24IC = 2 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 144: Table 4.23 Power Element Settings

    Power Elements You can enable as many as two independent three-phase power elements in the SEL-787 relay. Each enabled element can be set to detect real power or reactive power. When voltage inputs to the relay are from delta connected PTs or when single voltage input is used, the relay cannot account for unbalance in the voltages in calculating the power.

  • Page 145: Figure 4.44 Power Elements Operation In The Real/Reactive Power Plane

    The two power element time delay settings (PWR1D and PWR2D) can be set to have no intentional delay for testing purposes. For protection applications involving the power element Relay Word bits, SEL recommends a minimum time delay setting of 0.1 second for general applications. The classical power calculation is a product of voltage and current, to determine the real and reactive power quantities.

  • Page 146: Table 4.24 Frequency Settings

    Relay Is Tracking Frequency Figure 4.45 Over- and Underfrequency Element Logic The SEL-787 tracks frequency only on the models with the voltage option. The relay uses the positive-sequence voltage (V1) to measure and track frequency. The frequency tracking bit (FREQTRK) asserts if the applied V1 magnitude is greater than 10 V rms for at least three cycles.
  • Page 147 (V2) and zero-sequence voltage (V0) are both less than 5 V secondary. Settings The LOP function has no settings and is always active. You must incorporate the LOP function in a SEL control equation to supervise relay protection OGIC elements (see Example 4.3).

  • Page 148: Table 4.25 Demand Meter Settings

    Figure 4.46 Loss-of-Potential (LOP) Logic Demand Metering The SEL-787 provides demand and peak demand metering, selectable between thermal and rolling demand types, for the following values for either Winding 1 or Winding 2 currents: ➤...

  • Page 149: Figure 4.47 Demand Current Logic Outputs

    Demand metering peak recording is momentarily suspended when OGIC control equation setting FAULT is asserted (= logical 1). The differences between thermal and rolling demand metering are explained in the following discussion. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 150: Figure 4.48 Response Of Thermal And Rolling Demand Meters To A Step Input

    Time (Minutes) DMTC = 15 minutes Rolling Demand Meter Response (EDEM = ROL) Time (Minutes) Figure 4.48 Response of Thermal and Rolling Demand Meters to a Step Input (Setting DMTC = 15 minutes) SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 151: Figure 4.49 Voltage V S Applied To Series Rc Circuit

    (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-787 updates thermal demand values approximately every second. Rolling Demand Meter Response The response of the rolling demand meter in Figure 4.48 (bottom) to the step current input (top) is calculated with a sliding time-window arithmetic average calculation.
  • Page 152 0 to 5 minutes 1.0 per unit 5 to 10 minutes 1.0 per unit 10 to 15 minutes 3.0 per unit Rolling demand meter response at “Time = 15 minutes” = 3.0/3 = 1.0 per unit. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 153: Table 4.26 Trip/Close Logic Settings

    CL2 := SV03T AND LT02 OR CC2 UNLATCH CLOSE 2 ULCL2 := TRIP2 OR TRIPXFMR The trip logic and close logic for the SEL-787 operate in a similar manner. Each has a control equation setting to set or latch the logic and...

  • Page 154: Figure 4.50 Trip Logic

    TRIPXFMR Figure 4.50 Trip Logic The relay controls the tripping output contact(s) when the Relay Word bit TRIPm appears in an output contact SEL control equation. Default relay OGIC settings have output OUT103 set to TRIPXFMR (see Table 4.34). Assign Relay Word bits TRIP1 and TRIP2 to other available outputs as required by your application.

  • Page 155: Figure 4.51 Close Logic

    Trip/Close Logic REMTRIP Remote Trip Conditions SEL Control Equation OGIC You can map any Relay Word bit or SEL equation to the REMTRIP to OGIC trip a breaker or the transformer. For example, you can map a control input to REMTRIP and map the REMTRIP to appropriate TRm equation.

  • Page 156: Table 4.27 Enable Settings

    Logic Settings (SET L Command) CL Close SEL Control Equation OGIC There are two close logic equations within the SEL-787. They are designed to operate when control equation close variable setting CLm is asserted OGIC (m = 1, 2) and to unlatch when...

  • Page 157: Figure 4.52 Schematic Diagram Of A Traditional Latching Device

    Latch control switches (latch bits are the outputs of these switches) replace traditional latching devices. Traditional latching devices maintain output contact state. The SEL-787 latch control switch also retains state even when power to the device is lost. If the latch control switch is set to a programmable...

  • Page 158: Table 4.28 Latch Bits Equation Settings

    If individual settings are changed, the states of the latch bits (Relay Word bits LT01 through LT32) are retained, as in the preceding Power Loss on page 4.72 explanation. If the individual settings change causes a change in SEL OGIC control equation settings SETn or RSTn (n = 1 through 32), the retained states of the latch bits can be changed, subject to the newly enabled settings SETn or RSTn.
  • Page 159 Comments can be added to both boolean and math SEL control equations OGIC by inserting a # symbol. Everything following the # symbol in a SEL OGIC control equation is treated as a comment. See Table 4.30 for this and other Boolean and math operators and values.
  • Page 160 Boolean Boolean Boolean (lowest precedence) Parentheses Operator ( ) You can use more than one set of parentheses in a SEL control equation OGIC setting. For example, the following Boolean SEL control equation setting OGIC has two sets of parentheses:...
  • Page 161 Relay Word bit asserts (going from logical 0 to logical 1), R_TRIG interprets this logical 0 to logical 1 transition as a “rising edge” and asserts to logical 1 for one processing interval. For example, the Boolean SEL control equation event report generation OGIC...

  • Page 162: Figure 4.55 Result Of Falling-Edge Operator On A Deasserting Input

    OUT102 asserts (effectively OUT102 := logical 1). If the math variable (MV01) is equal to 45 in value, output contact OUT102 deasserts (effectively OUT102 := logical 0). Table 4.30 shows other operators and values that you can use in writing SEL control equations. OGIC...
  • Page 163 (“\” is entered only at the Mathematical end of a line) Timers Reset When If the device loses power or settings change, the SEL control equation OGIC variables/timers reset. Relay Word bits SVn and SVnT (n = 01–32) reset to Power Lost or logical 0 after power restoration or a settings change.

  • Page 164: Table 4.32 Counter Input/Output Description

    This Preset Value is loaded when SCnLD pulsed. This Preset Value is the number of counts before the output (SCnQU) asserts (follows SEL setting). OGIC SCnnCU Rising-Edge Input Count Up increments the counter (follows SEL OGIC setting). SCnnCD Rising-Edge Input Count Down decrements the counter (follows setting).

  • Page 165: Table 4.33 Order Of Precedence Of The Control Inputs

    (SCn = 0, n = 01 to 32). SCnn Output Value This counter output is an analog value that may be used with analog comparison operators in a SEL OGIC control equation and viewed using the COU command.

  • Page 166: Table 4.34 Control Output Equations And Contact Behavior Settings

    OGIC • • • • • • • • • The SEL-787 provides the ability to use SEL control equations to map OGIC protection (trip and warning) and general-purpose control elements to the SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 167: Table 4.35 General Global Settings

    When TRIP output fail-safe is enabled and the TRIP contact is appropriately connected (see Figure 2.16), the breaker is automatically tripped when relay control power fails. See Appendix I: M Communications and SEL-787 Settings IRRORED IRRORED Sheets for details. Transmit SEL...

  • Page 168: Figure 4.59 Phase Rotation Setting

    OGIC Minimum Metering, Energy Metering, and Demand Metering. Event Messenger The SEL-787 can be configured to automatically send ASCII message on a communications port when trigger condition is satisfied. Use the SET P Points command to set PROTO := EVMSG on the desired port to select the port. This feature is designed to send messages to the SEL-3010 Event Messenger, however, any device capable of receiving ASCII messages can be used.

  • Page 169: Table 4.36 Setting Group Selection

    Measurement Synchrophasors for description and Table H.1 for the settings. Time and Date The SEL-787 supports several methods of updating the relay time and date. For IRIG-B and Phasor Measurement Unit (PMU) synchrophasor Management Settings applications, refer to Appendix H: Synchrophasors for the description and Table H.1 for the settings.
  • Page 170 IRIGC := C37.118 will extract bit extensions and correct synchrophasor time accordingly Coordinated Universal Time (UTC) Offset Setting The SEL-787 has a Global setting UTC_OFF, settable from –24.00 to 24.00 hours, in 0.25 hour increments. The relay uses the UTC_OFF setting to calculate local (relay) time from the UTC source when configured for Simple Network Time Protocol (SNTP) updating via Ethernet.

  • Page 171: Table 4.38 Breaker Failure Setting

    Simple Network Time Protocol (SNTP) The SEL-787 Port 1 (Ethernet Port) supports the SNTP Client protocol. See Section 7: Communications, Simple Network Time Protocol (SNTP) on page 7.12 for a description and Table 7.4 for the settings.

  • Page 172: Figure 4.60 Breaker Failure Logic

    Through-Fault current. See Section 5: Metering and Monitoring for description and Table 5.10 for the settings. Analog Inputs The SEL-787 samples the analog inputs four times per cycle. For analog inputs, set the following parameters for each input: ➤...

  • Page 173: Table 4.39 Summary Of Steps

    Global Settings (SET G Command) Signal offset compensation factor calculation procedure: Step 1. Turn the SEL-787 on and allow it to warm up for a few minutes. Step 2. Set the analog inputs for each analog channel to the desired range using the AIxxxTYP, AIxxxL, AIxxxH, AIxxxEL, and AIxxxEH settings (for example, ±1 mA).
  • Page 174 AI301NAM:= AI301 ? Use the Instrument Tag Name to give the analog quantity a more descriptive name. This tag name appears in reports (EVENT, METER, and SUMMARY) instead of the default name of AI301. SEL control equations, Signal OGIC Profiles, and Fast Message Read use the default names. Use as many as eight valid tag name characters to name the analog quantity.

  • Page 175: Table 4.40 Analog Input Card In Slot

    OFF, –99999.000 to +99999.000 AI301LW1 := OFF AI301 LO WARN 2 OFF, –99999.000 to +99999.000 AI301LW1 := OFF AI301 LO ALARM OFF, –99999.000 to +99999.000 AI301LAL := OFF AI301 HI WARN 1 OFF, –99999.000 to +99999.000 AI301HW1 := OFF Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 176: Table 4.41 Output Setting For A Card In Slot 3

    Voltage setting range for a voltage transducer, i.e., when AI301TYP := V. Analog Outputs If an SEL-787 configuration includes the four analog inputs and four analog outputs (4 AI/4 AO) card, the analog outputs are allocated to output numbers 1-4. Figure 4.63 shows the x and y variable allocation for the analog output card.

  • Page 177: Figure 4.64 Analog Output Settings

    =>> Figure 4.64 Analog Output Settings Digital Input To comply with different control voltages, the SEL-787 offers dc debounce as well as ac debounce modes. Therefore, if the control voltage is dc, select the Debounce dc mode of operation, and if the control voltage is ac, select the ac mode of operation.

  • Page 178: Figure 4.66 Ac Mode Processing

    Relay Word bit IN101 deasserts to a logical 0. Table 4.42 shows the settings prompt, setting range, and factory-default settings for a card in Slot C. See the SEL-787 Settings Sheets for a complete list of input debounce settings. SEL-787 Relay...

  • Page 179: Table 4.42 Slot C Input Debounce Settings

    DeviceNet protocol. Table 4.43 Setting Change Disable Setting Setting Name := Setting Prompt Setting Range Factory Default DISABLE SETTINGS DSABLSET := 0 OGIC BLOCK MODBUS SET NONE, R_S, ALL BLKMBSET := NONE Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 180: Table 4.44 Time-Synchronization Source Setting

    TIME_SRC := IRIG1 Port Settings (SET P Command) The SEL-787 provides settings that allow you to configure the parameters for the communications ports. See Section 2: Installation for a detailed description of port connections. On the base unit: Port F (front panel) is an EIA-232 port;...

  • Page 181: Table 4.47 Fiber-Optic Serial Port Settings

    Modbus Timeout 2 (15-900 sec) MTIMEO2 := 15 The SEL-787 Port 1 (Ethernet Port) supports SNTP Client protocol. See Section 7: Communications, Simple Network Time Protocol (SNTP) for the description and Table 7.4 for the settings. See Table D.7 for a complete list of the DNP3 session settings.

  • Page 182: Table 4.48 Rear-Panel Serial Port Settings

    Table 4.48 Rear-Panel Serial Port Settings Setting Name := Setting Prompt Setting Range Factory Default PROTOCOL SEL, DNP, MOD, PROTO := SEL EVMSG, PMU, MBA, NOTE: For additional settings when MBB, MB8A, MB8B, PROTO := MBxx, see Table I.5 as well...

  • Page 183: Table 4.50 Rear-Panel Devicenet Port Settings

    LCD display. However, you need to first enable the appropriate number of local bits and display points necessary for your application. When your SEL-787 arrives, four display points are already enabled, but no local bits are enabled. If more display points are necessary for your application, use the EDP setting to enable as many as 32 display points.

  • Page 184: Table 4.51 Display Point And Local Bit Default Settings

    60 characters DP04 := IAVW2MAG, "W2 AVE I {5} A" DISPLAY POINT DP05 60 characters DP05 := • • • • • • • • • DISPLAY POINT DP32 60 characters DP32 := SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 185: Table 4.54 Settings That Always, Never, Or Conditionally Hide A Display Point

    HV and LV circuit breakers of Transformer 1. When the HV circuit breaker is open, we want the LCD display to show: TRFR 1 HV , and when the HV circuit breaker is closed, we want the display to BRKR: OPEN Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 186: Table 4.55 Entries For The Four Strings

    After connecting a form a (normally open) auxiliary contact from the HV circuit breaker to Input IN101 and a similar contact from the LV circuit breaker to Input IN102 of the SEL-787, we are ready to program the display points, using the following information for the HV breaker (LV breaker similar): ➤...

  • Page 187: Figure 4.70 Front-Panel Display-Hv Breaker Closed, Lv Breaker Open

    Table 4.56 shows an entry in the Name String only (leaving the Alias string, Set String, and Clear String void), using the SET F command as follows: DP01 := RID, “{16}” ? IN101 <Enter> Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 188: Table 4.56 Binary Entry In The Name String Only

    Set String Clear String AI301 — — — Figure 4.75 shows the front-panel display for the entry in Table 4.57, using the SET F command as follows: DP01 := RID, “{16}” ? AI301 <Enter> SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 189: Table 4.58 Entry In The Name String And The Alias Strings

    For example, to display the word DEFAULT and SETTINGS on two different lines, use a display point for each word, i.e., DP01 = 1,“DEFAULT” and DP02 = 1,“SETTINGS.” Table 4.59 shows other options and front-panel displays for the User Text and Formatting settings. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 190: Table 4.59 Example Settings And Displays

    ? AI302,"OIL TEMPERATURE" <Enter> DISPLAY POINT DP05 (60 characters) DP05 := IA_MAG, "IA {7.1} A pri" ? AI303,"WINDING TEMP" <Enter> Save changes (Y,N)? Y <Enter> Settings Saved =>> Figure 4.78 Adding Temperature Measurement Display Points SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 191 Local bit 2 starts a fan motor (START) that only needs a short pulse to seal itself in, and we use the clear/pulse combination. Figure 4.80 shows the settings to program the two local bits. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 192: Figure 4.80 Adding Two Local Bits

    Save changes (Y,N)? Y <Enter> Settings Saved =>> Figure 4.80 Adding Two Local Bits Target LED Settings The SEL-787 offers the following two types of LEDs. See Figure 8.1 and Figure 8.25 for the programmable LED locations: ➤ Six Target LEDs ➤...

  • Page 193: Table 4.60 Target Led Settings

    OGIC Pushbutton LEDs Enter any of the Relay Word bits (or combinations of Relay Word bits) as conditions in the PBp_LED (p = 1A, 1B,…4A, 4B) SEL control equation OGIC settings. When these Relay Word bits assert, the corresponding LED also asserts.

  • Page 194: Table 4.62 Auto-Removal Settings

    Word bits separated by spaces or commas; the SER report accepts a total of 96 Relay Word bits. Table 4.63 shows the settings prompt and default settings for the four SER trigger equations. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 195: Table 4.63 Ser Trigger Settings

    Deasserted Alias Prompt Word Bit Text Text ALIAS1 := PB01 FP_LOCK PICKUP DROPOUT ALIAS2 := PB02 FP_BRKR_SELECT PICKUP DROPOUT ALIAS3 := PB03 FP_CLOSE PICKUP DROPOUT ALIAS4 := PB04 FP_TRIP PICKUP DROPOUT ALIAS5 –ALIAS20 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 196: Table 4.66 Event Report Settings

    10 characters BO_00 := RB01 • • • • • • • • • DNP Binary Output Label Name 10 characters BO_31 := RB32 DNP Analog Input Label Name 24 characters AI_00 := IAW1_MAG SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 197: Table 4.69 User Map Register Settings

    • • • • • USER REG#125 NA, 1 Modbus Register Label MOD_125 := NA See Appendix E: Modbus RTU Communications for a complete list of the Modbus Register Labels and factory-default settings. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 198 This page intentionally left blank...

  • Page 199: Overview

    As many as 6500 time samples are stored. The SEL-787 has a through-fault event monitoring function that gathers current level, duration and date/time for each through fault experienced by the transformer. The function calculates and tracks accumulated I...

  • Page 200: Figure 5.1 Complex Power Measurement Conventions

    Metering and Monitoring Power Measurement Conventions Power Measurement Conventions The SEL-787 uses the IEEE convention for power measurement. The implications of this convention are depicted in Figure 5.1. Direction of Positive Real and Reactive Power SEL-787 Relay Direction of Positive Real and Reactive Power...

  • Page 201: Table 5.1 Measured Fundamental Meter Values

    ➤ Synchrophasor metering Fundamental Table 5.1 details each of the fundamental meter data types in the SEL-787. Section 8: Front-Panel Operations and Section 7: Communications describe Metering how to access the various types of meter data using the relay front panel and communications ports.

  • Page 202: Table 5.2 Measured Differential Meter Values

    Figure 5.2 METER Command Report With Voltage Option Differential Metering The differential metering function in the SEL-787 reports the fundamental frequency operate and restraint currents for each differential element (87) in multiples of TAP. Table 5.2 shows the value reported. Figure 5.3 shows an example of the METER DIF (differential) command report.

  • Page 203: Table 5.3 Thermal Meter Values

    Open RTD leads open Short RTD leads shorted Comm Fail Fiber-optic communications to SEL-2600 RTD Module have failed Stat Fail SEL-2600 RTD Module self-test status failure Figure 5.4 provides an example of the METER T command report. =>>MET T <Enter>...

  • Page 204: Table 5.5 Maximum/Minimum Meter Values

    Metering Energy Metering The SEL-787 with the voltage option includes energy metering. Use this form of metering to quantify real and reactive energy supplied by the transformer. Refer to Figure 5.1 for the definitions of positive real power, negative real power, positive reactive power, and negative reactive power.

  • Page 205: Figure 5.7 Meter M Command Report

    (V primary) Maximum and minimum real, reactive and apparent 3-phase power (kW, kVAR, kVA) Maximum and minimum system frequency (Hz) With RTD option or SEL-2600 RTD Maximum and minimum RTD temperatures (°C) Module With analog input option Maximum and minimum analog input values...

  • Page 206: Table 5.6 Rms Meter Values

    Math Variable The SEL-787 includes 32 math variables. When you receive your SEL-787, no math variables are enabled. To use math variables, enable the number of Metering math variables (between 1 and 32) you require, using the EMV setting in the Logic setting category.

  • Page 207: Figure 5.10 Meter Rms Command Report

    => Figure 5.10 METER RMS Command Report Analog Input The SEL-787 can monitor analog (transducer) quantities that it is measuring if equipped with optional analog inputs. Analog input metering shows Metering transducer values from standard voltage and current transducers. These values can then be used for monitoring automation and control applications.

  • Page 208: Table 5.7 Demand Values

    Harmonic Metering The harmonic metering function in the SEL-787 reports the current and voltage harmonics through the fifth harmonic and the total harmonic distortion percentage (THD %). Table 5.8 shows the harmonic values reported. Figure 5.14 provides an example of the METER H (Harmonic) command report.

  • Page 209: Table 5.9 Synchrophasor Measured Values

    5th (%) THD (%) => Figure 5.14 METER H Command Report Synchrophasor The MET PM serial port ASCII command may be used to view the SEL-787 synchrophasor measurements. There are multiple ways to use the MET PM Metering command: ➤...

  • Page 210: Figure 5.15 Ldp Command Report

    0.3 V (secondary). Load Profiling The SEL-787 includes a load profiling function. The relay automatically records selected quantities into nonvolatile memory every 5, 10, 15, 30, or 60 minutes, depending on the LDAR load profile report setting (see Load Profile Settings on page 4.110).

  • Page 211: Figure 5.16 Transformer Bank Subjected To Through Fault

    Monitor and document this through-fault activity with the through-fault element in the SEL-787. The through-fault element also calculates the cumulative mechanical stress on the transformer windings. Source...

  • Page 212: Table 5.10 Through-Fault Element Settings

    MAX_PU There are only four settings to set the through-fault event monitor, all under the Through Fault category in Global Settings (SET G command) (see Table 5.10). Enable the through fault element by setting the SEL equation ETHRFLT for OGIC the conditions that you want the element to run.

  • Page 213: Figure 5.18 Through-Fault Diagram

    THFLTPU setting, Relay Word bit TFLTALA asserts. Assign output Relay Word bit TFLTALA to an output for annunciation or control action such as to modify distribution feeder auto-reclosing (e.g., reduce the number of reclosures from 3 to 2). Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 214 Figure 5.17. The through-fault alarm state is either a 1 (indicating an alarm state), or a 0 (indicating a normal state). SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 215: Table 5.11 Through-Fault Events Report Messages

    Through Fault Event Buffer Empty There are no event records in the nonvolatile memory Memory resources are low; check for There is insufficient memory to display the activity on other ports event records Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 216: Figure 5.20 Preload The Values Of The Accumulated Data

    Winding 1 Total Accumulated Percentage of Through Fault Capability: A_Phase = 0.00? 60.20 B_Phase = 0.00? 56.0 C_Phase = 0.00? 52 Are you sure (Y,N)? Y Command Completed =>> Figure 5.20 Preload the Values of the Accumulated Data SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 217: Table 6.1 Methods Of Accessing Settings

    Setting entry error messages, together with corrective actions, are also discussed in this section to assist in correct settings entry. The SEL-787 Settings Sheets at the end of this section list all SEL-787 settings, the setting definitions, and input ranges. Refer to Section 4: Protection and Logic Functions for detailed information on individual elements and settings.

  • Page 218: View/Change Settings With Front Panel

    Enter the underlined RELAY will present you with the settings as listed in the SEL-787 Settings RELAY Sheets. Use the Up Arrow, Down Arrow, Left Arrow, and Right Arrow pushbuttons to scroll through the relay settings. View and change the settings according to your needs by selecting and editing them.

  • Page 219: Figure 6.1 Front-Panel Setting Entry Example

    ID Settings Config Settings Diff Element • • Demand Mtr Set Trip/Close Logic Config Menu W1CT 180.00 • • • SINGLEV PTR Setting PHASE PT RATIO PTR=00180.00 Figure 6.1 Front-Panel Setting Entry Example Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 220: Table 6.2 Show Command Options

    You may append a setting name to each of the commands to specify the first setting to display (e.g., SET 50P1P displays the relay settings starting with setting 50P1P). The default is the first setting. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 221: Table 6.4 Set Command Editing Keystrokes

    TERSE instructs the relay to skip the settings display after the last setting. Use this parameter to speed up the SET command. If you wish to review the settings before saving, do not use the TERSE option. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 222: Table 6.6 Setting Interdependency Error Messages

    Group settings, REF element REF Element is only available when setting WnCT := WYE Setting Combination (n = 1 or 2). Invalid n = 1 or 2 Relay forces MVA := OFF prior to this message. SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 223 SEL-787 Settings Sheets Instruction Manual These settings sheets include the definition and input range for each setting in the relay. You can access the settings from the relay front panel and the serial ports. ➤ Some settings require an optional module (see Section 4: Protection and Logic Functions for details).
  • Page 224 SET.2 SEL-787 Settings Sheets Date _______________ of 66 Group Settings (SET Command) Group______________ Differential XFMR DIFF ENABLE (Y, N) (All Differential settings below are hidden if E87 := N) Note: TAP1 and TAP2 are autoset by relay if MVA setting is not OFF.
  • Page 225 Date _______________ SEL-787 Settings Sheets SET.3 Group Settings (SET Command) of 66 Group______________ PHASE IOC DELAY (0.00–5.00 sec) 50P13D (Hidden if 50P13P := OFF) PH IOC TRQCTRL (SEL 50P13TC (Hidden if 50P13P := OFF) OGIC PHASE IOC LEVEL (OFF, 0.50–96.00 A [5 A nom.], 50P14P 0.10–19.20 A [1 A nom.])
  • Page 226 SET.4 SEL-787 Settings Sheets Date _______________ of 66 Group Settings (SET Command) Group______________ Winding 1 Phase A Time Overcurrent PHASE TOC LEVEL (OFF, 0.50–16.00 A [5 A nom.], 51P1AP 0.10–3.20 A [1 A nom.]) PHASE TOC CURVE (U1, U2, U3, U4, U5,...
  • Page 227 Date _______________ SEL-787 Settings Sheets SET.5 Group Settings (SET Command) of 66 Group______________ RES TOC CURVE (U1, U2, U3, U4, U5, C1, C2, C3, C4, C5) 51G1C (Hidden if 51G1P := OFF) RES TOC TDIAL (0.50–15.00 for U1–U5 OR 0.05–1.00 for 51G1TD C1–C5)
  • Page 228 SET.6 SEL-787 Settings Sheets Date _______________ of 66 Group Settings (SET Command) Group______________ Winding 2 Residual Overcurrent All settings below are hidden when W2CT := DELTA. RES IOC LEVEL (OFF, 0.50–96.00 A [5 A nom.], 50G21P 0.10–19.20 A [1 A nom.]) RES IOC DELAY (0.00–5.00 sec)
  • Page 229 51P2ACT (Hidden if 51P2AP := OFF) MIN RESPONSE TIM (0.00–1.00 sec) 51P2AMR := (Hidden if 51P2AP := OFF) PH A TOC TRQCTRL (SEL 51P2ATC (Hidden if 51P2AP := OFF) OGIC Winding 2 Phase B Time Overcurrent PHASE TOC LEVEL (OFF, 0.50–16.00 A [5 A nom.], 51P2BP 0.10–3.20 A [1 A nom.])
  • Page 230 SET.8 SEL-787 Settings Sheets Date _______________ of 66 Group Settings (SET Command) Group______________ Winding 2 Negative-Sequence Time Overcurrent NSEQ TOC LEVEL (OFF, 0.50–16.00 A [5 A nom.], 51Q2P 0.10–3.20 A [1 A nom.]) NSEQ TOC CURVE (U1, U2, U3, U4, U5, C1, C2, C3, C4, C5)
  • Page 231 Date _______________ SEL-787 Settings Sheets SET.9 Group Settings (SET Command) of 66 Group______________ RTD1 LOCATION (OFF, AMB, OTH) RTD1LOC := RTD1 IDENTIFIER (10 characters) RTD1NAM := (Hidden if RTD1LOC := OFF or AMB) RTD1 TYPE (PT100, NI100, NI120, CU10) RTD1TY (All RTD settings below hidden if E49RTD := NONE) RTD1 TRIP LEVEL (OFF, 1–250 degC)
  • Page 232 SET.10 SEL-787 Settings Sheets Date _______________ of 66 Group Settings (SET Command) Group______________ RTD6 LOCATION (OFF, AMB, OTH) RTD6LOC := RTD6 IDENTIFIER (10 characters) RTD6NAM := (Hidden if RTD6LOC := OFF or AMB) RTD6 TYPE (PT100, NI100, NI120, CU10) RTD6TY (Hidden if RTD6LOC := OFF) RTD6 TRIP LEVEL (OFF, 1–250 degC)
  • Page 233 Date _______________ SEL-787 Settings Sheets SET.11 Group Settings (SET Command) of 66 Group______________ RTD11 LOCATION (OFF, AMB, OTH) RTD11LOC := (Hidden if E49RTD := INT) RTD11 IDENTIFIER (10 characters) RTD11NAM:= (Hidden if RTD11LOC := OFF or AMB, or E49RTD := INT)
  • Page 234 SET.12 SEL-787 Settings Sheets Date _______________ of 66 Group Settings (SET Command) Group______________ XFMR WDG CONN (DELTA, WYE) 24WDG LVL1 V/HZ PICKUP (100–200 %) 24D1P LVL1 TIME DLY (0.04–400.00 s) 24D1D LVL2 CURVE SHAPE (OFF, DD, ID, I, U) 24CCS LVL2 INV-TM PU (100–200 %)
  • Page 235 UNLATCH TRP XFMR (SEL ULTRXFMR:= OGIC BREAKER 1 STATUS (SEL 52A1 OGIC CLOSE 1 EQUATION (SEL OGIC UNLATCH CLOSE 1 EQUATION (SEL ULCL1 OGIC BREAKER 2 STATUS (SEL 52A2 OGIC CLOSE 2 EQUATION (SEL OGIC UNLATCH CLOSE 2 EQUATION (SEL...
  • Page 236 SET.14 SEL-787 Settings Sheets Date _______________ of 66 Logic Settings (SET L Command) Group______________ Logic Settings (SET L Command) Enables OGIC LATCHES (N, 1–32) ELAT OGIC SV/TIMERS (N, 1–32) COUNTERS (N, 1–32) OGIC MATH VARIABLES (N, 1–32) Latch Bits Equations...
  • Page 237 Date _______________ SEL-787 Settings Sheets SET.15 Logic Settings (SET L Command) of 66 Group______________ RST15 SET16 RST16 SET17 RST17 SET18 RST18 SET19 RST19 SET20 RST20 SET21 RST21 SET22 RST22 SET23 RST23 SET24 RST24 SET25 RST25 SET26 RST26 SET27 RST27 SET28...
  • Page 238 SET.16 SEL-787 Settings Sheets Date _______________ of 66 Logic Settings (SET L Command) Group______________ SV/Timers SV TIMER PICKUP (0.00–3000.00 sec) SV01PU SV TIMER DROPOUT (0.00–3000.00 sec) SV01DO SV INPUT ( SV01 OGIC SV TIMER PICKUP (0.00–3000.00 sec) SV02PU SV TIMER DROPOUT (0.00–3000.00 sec)
  • Page 239 Date _______________ SEL-787 Settings Sheets SET.17 Logic Settings (SET L Command) of 66 Group______________ SV TIMER PICKUP (0.00–3000.00 sec) SV13PU SV TIMER DROPOUT (0.00–3000.00 sec) SV13DO SV INPUT ( SV13 OGIC SV TIMER PICKUP (0.00–3000.00 sec) SV14PU SV TIMER DROPOUT (0.00–3000.00 sec)
  • Page 240 SV INPUT ( SV32 OGIC Counters Equations SC PRESET VALUE (1–65000) SC01PV SC RESET INPUT (SEL SC01R OGIC SC LOAD PV INPUT (SEL SC01LD OGIC SC CNT UP INPUT (SEL SC01CU OGIC SC CNT DN INPUT (SEL SC01CD OGIC SC PRESET VALUE (1–65000)
  • Page 241 Date _______________ SEL-787 Settings Sheets SET.19 Logic Settings (SET L Command) of 66 Group______________ SC CNT UP INPUT (SEL SC03CU OGIC SC CNT DN INPUT (SEL SC03CD OGIC SC PRESET VALUE (1–65000) SC04PV SC RESET INPUT (SEL SC04R OGIC SC LOAD PV INPUT (SEL...
  • Page 242 66 Logic Settings (SET L Command) Group______________ SC PRESET VALUE (1–65000) SC11PV SC RESET INPUT (SEL SC11R OGIC SC LOAD PV INPUT (SEL SC11LD OGIC SC CNT UP INPUT (SEL SC11CU OGIC SC CNT DN INPUT (SEL SC11CD OGIC SC PRESET VALUE (1–65000)
  • Page 243 Date _______________ SEL-787 Settings Sheets SET.21 Logic Settings (SET L Command) of 66 Group______________ SC LOAD PV INPUT (SEL SC18LD OGIC SC CNT UP INPUT (SEL SC18CU OGIC SC CNT DN INPUT (SEL SC18CD OGIC SC PRESET VALUE (1–65000) SC19PV...
  • Page 244 SET.22 SEL-787 Settings Sheets Date _______________ of 66 Logic Settings (SET L Command) Group______________ SC CNT DN INPUT (SEL SC25CD OGIC SC PRESET VALUE (1–65000) SC26PV SC RESET INPUT (SEL SC26R OGIC SC LOAD PV INPUT (SEL SC26LD OGIC SC CNT UP INPUT (SEL...
  • Page 245 Date _______________ SEL-787 Settings Sheets SET.23 Logic Settings (SET L Command) of 66 Group______________ Math Variables MV01 MV02 MV03 MV04 MV05 MV06 MV07 MV08 MV09 MV10 MV11 MV12 MV13 MV14 MV15 MV16 MV17 MV18 MV19 MV20 MV21 MV22 MV23 MV24...
  • Page 246 SET.24 SEL-787 Settings Sheets Date _______________ of 66 Logic Settings (SET L Command) Group______________ Base Output OUT101 FAIL-SAFE (Y, N) OUT101FS := OUT101 OUT102 FAIL-SAFE (Y, N) OUT102FS := OUT102 OUT103 FAIL-SAFE (Y, N) OUT103FS := OUT103 Slot C Output...
  • Page 247 Date _______________ SEL-787 Settings Sheets SET.25 Logic Settings (SET L Command) of 66 Group______________ Transmit SEL Equations IRRORED OGIC (Hidden if PROTO is not MBxx on any of the communications ports.) TMB1A TMB2A TMB3A TMB4A TMB5A TMB6A TMB7A TMB8A TMB1B...
  • Page 248 SET.26 SEL-787 Settings Sheets Date _______________ of 66 Global Settings (SET G Command) Group______________ Global Settings (SET G Command) General PHASE ROTATION (ABC, ACB) PHROT RATED FREQ. (50, 60 Hz) FNOM DATE FORMAT (MDY, YMD, DMY) DATE_F FAULT CONDITION (SEL...
  • Page 249 Date _______________ SEL-787 Settings Sheets SET.27 Global Settings (SET G Command) of 66 Group______________ MESSENGER POINT MP10 AQ (None, 1 analog quantity) MPAQ10 MESSENGER POINT MP10 TEXT (148 characters) MPTX10 MESSENGER POINT MP11 TRIGGER (Off, 1 Relay Word bit) MPTR11...
  • Page 250 SET.28 SEL-787 Settings Sheets Date _______________ of 66 Global Settings (SET G Command) Group______________ MESSENGER POINT MP22 TEXT (148 characters) MPTX22 MESSENGER POINT MP23 TRIGGER (Off, 1 Relay Word bit) MPTR23 MESSENGER POINT MP23 AQ (None, 1 analog quantity) MPAQ23...
  • Page 251 Date _______________ SEL-787 Settings Sheets SET.29 Global Settings (SET G Command) of 66 Group______________ Phasor Measurement (PMU) EN SYNCHRO PHSOR (Y, N) EPMU (All subsequent PMU settings hidden if EPMU :=N) MESSAGES PER SEC (1, 2, 5, 10) MRATE STATION NAME (16 characters) PMSTN PMU HARDWARE ID (1–65534)
  • Page 252 SET.30 SEL-787 Settings Sheets Date _______________ of 66 Global Settings (SET G Command) Group______________ BRKR1 FAIL DELAY (0.00–2.00 sec) BFD1 BRKR1 FAIL INITIATE ((SEL BFI1 OGIC BRKR2 FAIL DELAY (0.00–2.00 sec) BFD2 BRKR2 FAIL INITIATE ((SEL BFI2 OGIC Through Fault...
  • Page 253 Date _______________ SEL-787 Settings Sheets SET.31 Global Settings (SET G Command) of 66 Group______________ If AI 02TYP = I 02 LOW IN VAL (–20.480 to +20.480; mA) AIx02L 02 HI IN VAL (–20.480 to +20.480; mA) AIx02H If AI 02TYP = V 02 LOW IN VAL (–10.240 to +10.240 V)
  • Page 254 SET.32 SEL-787 Settings Sheets Date _______________ of 66 Global Settings (SET G Command) Group______________ 04 HI IN VAL (–20.480 to +20.480; mA) AIx04H If AI 04TYP = V 04 LOW IN VAL (–10.240 to +10.240 V) AIx04L 04 HI IN VAL (–10.240 to +10.240 V)
  • Page 255 Date _______________ SEL-787 Settings Sheets SET.33 Global Settings (SET G Command) of 66 Group______________ AOx03 03 ANALOG QTY (Off, 1 analog quantity) AOx03AQ := 03 TYPE (I, V) AOx03TYP := 03 AQTY LOW (–2147483647 to +2147483647) AOx03AQL := 03 AQTY HI (–2147483647 to +2147483647)
  • Page 256 SET.34 SEL-787 Settings Sheets Date _______________ of 66 Global Settings (SET G Command) Group______________ Input Debounce Settings (Slot D) IN401 Debounce (AC, 0–65000 ms) IN401D IN402 Debounce (AC, 0–65000 ms) IN402D IN403 Debounce (AC, 0–65000 ms) IN403D IN404 Debounce (AC, 0–65000 ms) IN404D IN405 Debounce (AC, 0–65000 ms)
  • Page 257 SET PORT p (p = F, 1, 2, 3, or 4) Command of 66 Group______________ SET PORT p (p = F, 1, 2, 3, or 4) Command PORT F PROTOCOL (SEL, MOD, EVMSG, PMU) PROTO Communications SPEED (300, 1200, 2400, 4800, 9600, 19200, 38400 bps) SPEED...
  • Page 258 SET.36 SEL-787 Settings Sheets Date _______________ of 66 SET PORT p (p = F, 1, 2, 3, or 4) Command Group______________ TELNET TIME-OUT (1–30 min) TIDLE FTP USER NAME (20 characters) FTPUSER Enable IEC 61850 Protocol (Y, N) E61850 (Hidden if 61850 not supported)
  • Page 259 Date _______________ SEL-787 Settings Sheets SET.37 SET PORT p (p = F, 1, 2, 3, or 4) Command of 66 Group______________ Seconds to send Data Link Heartbeat (0–7200) DNPINA1 (Hidden if DNPTR1 := UDP) Event Message Confirm Time-Out (1–50 sec))
  • Page 260 SET.38 SEL-787 Settings Sheets Date _______________ of 66 SET PORT p (p = F, 1, 2, 3, or 4) Command Group______________ Enable Unsolicited Reporting at Power-Up (Y, N) PUNSOL2 (Hidden if UNSOL2 := N) Number of Events to Transmit On (1–200)

  • Page 261: Table Set.1 Port Number Settings That Must Be Unique

    Port Number Settings Must be Unique When making the SEL-787 Port 1 settings, port number settings cannot be used for more than one protocol. The relay checks all of the settings shown in Table SET.1 before saving changes. If a port number is used more than once, or if it matches any of the fixed port numbers (20, 21, 102, 502, 23), the relay will display an error message and return to the first setting that is in error or contains a duplicate value.
  • Page 262 HDWR HANDSHAKING (Y, N) RTSCTS (Hidden if PROTO := MOD, EVMSG, DNP, SEL or MB_) DNP3 Protocol (Hidden if PROTO := SEL, EVMSG, MB, PMU or MOD.) DNP Address (0–65519) DNPADR DNP Address to Report to (0–65519) REPADR1 := DNP Map (1–3) DNPMAP1 := Analog Input Default Variation (1–6)
  • Page 263 SLAVEID (Hidden if PROTO := SEL, DNP, PMU, EVMSG, or MB_) Protocol IRRORED (Hidden if PROTO := SEL, EVMSG, DNP, PMU, or MOD.) MB Transmit Identifier (1–4) TXID MB Receive Identifier (1–4) RXID MB RX Bad Pickup Time (0–10000 seconds) RBADPU MB Channel Bad Pickup (1–10000 ppm)
  • Page 264 FAST OP MESSAGES (Y, N) FASTOP (Hidden if PROTO := MOD, DNP, PMU, EVMSG, or MB_) DNP3 Protocol (Hidden if PROTO := SEL, EVMSG, MB, PMU or MOD.) DNP Address (0–65519) DNPADR DNP Address to Report to (0–65519) REPADR1 := DNP Map (1–3)
  • Page 265 SLAVEID (Hidden if PROTO := SEL, DNP, PMU, EVMSG, or MB_) Protocol IRRORED (Hidden if PROTO := SEL, DNP, PMU, EVMSG, or MOD.) MB Transmit Identifier (1–4) TXID MB Receive Identifier (1–4) RXID MB RX Bad Pickup Time (0–10000 seconds) RBADPU MB Channel Bad Pickup (1–10000 ppm)
  • Page 266 FAST OP MESSAGES (Y, N) FASTOP (Hidden if PROTO := DNP, MOD, EVMSG, MB_, PMU or DNET) DNP3 Protocol (Hidden if PROTO := SEL, EVMSG, MB, PMU , DNET or MOD.) DNP Address (0–65519) DNPADR DNP Address to Report to (0–65519) REPADR1 := DNP Map (1–3)
  • Page 267 MODBUS SLAVE ID (1–247) SLAVEID (Hidden if PROTO := SEL, DNP, PMU, EVMSG, MB_, or DNET) Protocol IRRORED (Hidden if PROTO := SEL, EVMSG, DNP, PMU, DNET or MOD.) MB Transmit Identifier (1–4) TXID Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 268 SET.46 SEL-787 Settings Sheets Date _______________ of 66 SET PORT p (p = F, 1, 2, 3, or 4) Command Group______________ MB Receive Identifier (1–4) RXID MB RX Bad Pickup Time (0–10000 seconds) RBADPU MB Channel Bad Pickup (1–10000 ppm)
  • Page 269 Date _______________ SEL-787 Settings Sheets SET.47 Front-Panel Settings (SET F Command) of 66 Group______________ Front-Panel Settings (SET F Command) General DISPLY PTS ENABL (N, 1–32) LOCAL BITS ENABL (N, 1–32) LCD TIMEOUT (OFF, 1–30 min) FP_TO LCD CONTRAST (1–8) FP_CONT :=...
  • Page 270 SET.48 SEL-787 Settings Sheets Date _______________ of 66 Front-Panel Settings (SET F Command) Group______________ DISPLAY POINT DP03 (60 characters) DP03 DISPLAY POINT DP04 (60 characters) DP04 DISPLAY POINT DP05 (60 characters) DP05 DISPLAY POINT DP06 (60 characters) DP06 DISPLAY POINT DP07 (60 characters)
  • Page 271 Date _______________ SEL-787 Settings Sheets SET.49 Front-Panel Settings (SET F Command) of 66 Group______________ SET LB_ LABEL (7 characters) SLB02 PULSE LB_ LABEL (7 characters) PLB02 LB_NAME (14 characters) NLB03 CLEAR LB_ LABEL (7 characters) CLB03 SET LB_ LABEL (7 characters)
  • Page 272 SET.50 SEL-787 Settings Sheets Date _______________ of 66 Front-Panel Settings (SET F Command) Group______________ PULSE LB_ LABEL (7 characters) PLB11 LB_NAME (14 characters) NLB12 CLEAR LB_ LABEL (7 characters) CLB12 SET LB_ LABEL (7 characters) SLB12 PULSE LB_ LABEL (7 characters)
  • Page 273 Date _______________ SEL-787 Settings Sheets SET.51 Front-Panel Settings (SET F Command) of 66 Group______________ LB_NAME (14 characters) NLB21 CLEAR LB_ LABEL (7 characters) CLB21 SET LB_ LABEL (7 characters) SLB21 PULSE LB_ LABEL (7 characters) PLB21 LB_NAME (14 characters) NLB22...
  • Page 274 SET.52 SEL-787 Settings Sheets Date _______________ of 66 Report Settings (SET R Command) Group______________ CLEAR LB_ LABEL (7 characters) CLB30 SET LB_ LABEL (7 characters) SLB30 PULSE LB_ LABEL (7 characters) PLB30 LB_NAME (14 characters) NLB31 CLEAR LB_ LABEL (7 characters)
  • Page 275 Date _______________ SEL-787 Settings Sheets SET.53 Report Settings (SET R Command) of 66 Group______________ ALIAS 10 ALIAS10 ALIAS 11 ALIAS11 ALIAS 12 ALIAS12 ALIAS 13 ALIAS13 ALIAS 14 ALIAS14 ALIAS 15 ALIAS15 ALIAS 16 ALIAS16 ALIAS 17 ALIAS17 ALIAS 18...
  • Page 276 SET.54 SEL-787 Settings Sheets Date _______________ of 66 Modbus Map Settings (SET M Command) Group______________ Modbus Map Settings (SET M Command) Modbus User Map See Appendix E: Modbus RTU Communications for additional details. User Map Register Label Name (8 characters)
  • Page 277 Date _______________ SEL-787 Settings Sheets SET.55 Modbus Map Settings (SET M Command) of 66 Group______________ User Map Register Label Name (8 characters) MOD_035 User Map Register Label Name (8 characters) MOD_036 User Map Register Label Name (8 characters) MOD_037 User Map Register Label Name (8 characters)
  • Page 278 SET.56 SEL-787 Settings Sheets Date _______________ of 66 Modbus Map Settings (SET M Command) Group______________ User Map Register Label Name (8 characters) MOD_072 User Map Register Label Name (8 characters) MOD_073 User Map Register Label Name (8 characters) MOD_074 User Map Register Label Name (8 characters)
  • Page 279 Date _______________ SEL-787 Settings Sheets SET.57 Modbus Map Settings (SET M Command) of 66 Group______________ User Map Register Label Name (8 characters) MOD_109 User Map Register Label Name (8 characters) MOD_110 User Map Register Label Name (8 characters) MOD_111 User Map Register Label Name (8 characters)
  • Page 280 SET.58 SEL-787 Settings Sheets Date _______________ of 66 DNP3 Map Settings (SET DNP n Command) Group______________ DNP3 Map Settings (SET DNP n Command) Use SET DNP n command with n 1, 2, or 3 to create as many as three DNP User Maps. Refer to Appendix D: DNP3 Communications for details.
  • Page 281 Date _______________ SEL-787 Settings Sheets SET.59 DNP3 Map Settings (SET DNP n Command) of 66 Group______________ DNP Binary Input Label Name (10 characters) BI_32 DNP Binary Input Label Name (10 characters) BI_33 DNP Binary Input Label Name (10 characters) BI_34...
  • Page 282 SET.60 SEL-787 Settings Sheets Date _______________ of 66 DNP3 Map Settings (SET DNP n Command) Group______________ DNP Binary Input Label Name (10 characters) BI_69 DNP Binary Input Label Name (10 characters) BI_70 DNP Binary Input Label Name (10 characters) BI_71...
  • Page 283 Date _______________ SEL-787 Settings Sheets SET.61 DNP3 Map Settings (SET DNP n Command) of 66 Group______________ Binary Output Map DNP Binary Output Label Name (10 characters) BO_00 DNP Binary Output Label Name (10 characters) BO_01 DNP Binary Output Label Name (10 characters)
  • Page 284 SET.62 SEL-787 Settings Sheets Date _______________ of 66 DNP3 Map Settings (SET DNP n Command) Group______________ Analog Input Map DNP Analog Input Label Name (24 characters) AI_00 AI_01 AI_02 AI_03 AI_04 AI_05 AI_06 AI_07 AI_08 AI_09 AI_10 AI_11 AI_12 AI_13...
  • Page 285 Date _______________ SEL-787 Settings Sheets SET.63 DNP3 Map Settings (SET DNP n Command) of 66 Group______________ AI_35 AI_36 AI_37 AI_38 AI_39 AI_40 AI_41 AI_42 AI_43 AI_44 AI_45 AI_46 AI_47 AI_48 AI_49 AI_50 AI_51 AI_52 AI_53 AI_54 AI_55 AI_56 AI_57 AI_58...
  • Page 286 SET.64 SEL-787 Settings Sheets Date _______________ of 66 DNP3 Map Settings (SET DNP n Command) Group______________ AI_72 AI_73 AI_74 AI_75 AI_76 AI_77 AI_78 AI_79 AI_80 AI_81 AI_82 AI_83 AI_84 AI_85 AI_86 AI_87 AI_88 AI_89 AI_90 AI_91 AI_92 AI_93 AI_94 AI_95...
  • Page 287 Date _______________ SEL-787 Settings Sheets SET.65 DNP3 Map Settings (SET DNP n Command) of 66 Group______________ DNP Analog Output Label Name (6 characters) AO_07 DNP Analog Output Label Name (6 characters) AO_08 DNP Analog Output Label Name (6 characters) AO_09...
  • Page 288 SET.66 SEL-787 Settings Sheets Date _______________ of 66 DNP3 Map Settings (SET DNP n Command) Group______________ DNP Counter Label Name (11 characters) CO_11 DNP Counter Label Name (11 characters) CO_12 DNP Counter Label Name (11 characters) CO_13 DNP Counter Label Name (11 characters)

  • Page 289: Table 7.1 Sel-787 Communications Port Interfaces

    Ordering Option Option 2: DeviceNet Communications Card This port can receive the RTD measurement information from the optional external SEL-2600 RTD Module. Refer to the applicable SEL-2600 RTD Module Instruction Manual for information on the fiber-optic interface. Refer to Appendix G: DeviceNet Communications for information on the DeviceNet communications card.
  • Page 290 1 km. Communications distances as far as 4 km can be Port achieved by using an SEL-2812 transceiver on PORT 3. While PORT 2 and the SEL-2812 are compatible, PORT 2 is less sensitive than the SEL-2812, which limits the distance to 1 km.

  • Page 291: Figure 7.1 Simple Ethernet Network Configuration

    Ethernet Port Use the Ethernet port for interfacing with an Ethernet network environment. SEL-787 Ethernet port choices include single or dual copper or fiber-optic configurations. With dual Ethernet ports the unit has an unmanaged Ethernet switch. Redundant configurations support automatic failover switching from primary to backup network if a failure in the primary network is detected.

  • Page 292: Figure 7.3 Ethernet Network Configuration With Ring Structure (Switched Mode)

    Step 3. Set NETPORT to the preferred network interface. On startup the relay communicates via NETPORT (primary port) selected. If the SEL-787 detects a link failure on the primary port, it activates the standby port after the failover time, FTIME, elapses. If the link status on the primary link returns to normal before the failover time expires, the failover timer resets and uninterrupted operation continues on the primary network port.

  • Page 293: Figure 7.4 Irig-B Input (Relay Terminals B01-B02)

    Connect to an SEL Communications Processor with SEL Cable C273A to bring IRIG-B input with the EIA-232 port. Refer to Figure 7.5 for a connection diagram. Refer to Figure 7.6 on how to connect a SEL Time Source (SEL-2401, SEL-2404, SEL-2407) for IRIG-B Input to Port 3. Date Code 20150130...

  • Page 294: Figure 7.5 Irig-B Input Via Eia-232 Port 3 (Sel Communications Processor As Source)

    SEL Cable SEL-2404 C273A Cannot use Port 2 if Port 3 is used. Set Global setting IRIG TIME SOURCE to TIME_SRC := IRIG1. Figure 7.5 IRIG-B Input Via EIA-232 Port 3 (SEL Communications Processor as Source) (Any EIA-232 SEL-787 serial application)

  • Page 295: Table 7.2 Eia-232/Eia-485 Serial Port Pin Functions

    This +5 Vdc is available on Pin 1 only. Connect Your The front port of the SEL-787 is a standard female 9-pin connector. You can connect to a standard 9-pin computer port with SEL cable C234A; wiring for PC to the Relay this cable is shown in Figure 7.10.

  • Page 296: Figure 7.10 Sel Cable C234A-Sel-787 To Dte Device

    For EIA-485, the pin numbers represent relay terminals _O1 through _05. The following cable diagrams show several types of EIA-232 serial communications cables that connect the SEL-787 to other devices. These and other cables are available from SEL. Contact the factory for more information.

  • Page 297: Figure 7.13 Sel Cable C272A-Sel-787 To Sel Communications Processor (Without Irig-B Signal)

    D Subconnector D Subconnector Pin # Pin # Func. Func. IRIG+ IRIG+ IRIG- IRIG- Figure 7.14 SEL Cable C273A—SEL-787 to SEL Communications Processor (With IRIG-B Signal) SEL-787 Relay SEL-3010 Event Messenger DTE* DCE** 9-Pin Male 9-Pin Male D Subconnector D Subconnector Func.

  • Page 298: Table 7.3 Protocols Supported On The Various Ports

    Communications Protocols Communications Protocols Protocols Although the SEL-787 supports a wide range of protocols, not all protocols are available on all ports. In addition, not all hardware options support all protocols. Be sure to select the correct hardware to support a particular protocol. For ®...
  • Page 299 The SEL-787 provides Modbus RTU support. Modbus is a protocol described in Appendix E: Modbus RTU Communications. DNP3 (Distributed Network Protocol) The SEL-787 provides DNP3 protocol support if the option is selected. The DNP3 protocol is described in Appendix D: DNP3 Communications. DeviceNet The SEL-787 provides DeviceNet support.
  • Page 300 NTP server acts either as the primary time source or as a backup time source to the more accurate IRIG-B time source. Creating an NTP Server Three SEL application notes, available from the SEL website, describe how to create an NTP server. ➤...

  • Page 301: Table 7.4 Settings Associated With Sntp

    If setting SNTPPSIP = 0.0.0.0 while setting ESNTP = BROADCAST, the relay will listen for and synchronize to any broadcasting NTP server. If setting SNTPPSIP is set to a specific IP address while setting ESNTP = Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 302: Sel Ascii Protocol And Commands

    When installed on a network configured with one Ethernet switch between the SEL-787 and the SNTP Server, and when using ESNTP = UNICAST or MANYCAST, the relay time synchronization error with the SNTP server is typically less than ±1 millisecond.

  • Page 303: Table 7.5 Serial Port Automatic Messages

    Command (Relay Self-Test Status) on page 7.40. Access Levels Commands can be issued to the SEL-787 via the serial port or Ethernet Telnet session to view metering values, change relay settings, etc. The available serial port commands are listed in the SEL-787 Relay Command Summary at the end of this manual.
  • Page 304 Commands (ACCESS, 2ACCESS, and CAL) on page 7.18 for more detail. Access Level 1 When the SEL-787 is in Access Level 1, the relay sends the following prompt: => See the SEL-787 Relay Command Summary at the end of this manual for the commands available from Access Level 1.

  • Page 305: Table 7.6 Command Response Header Definitions

    ➤ The Access Level 0 commands provide the first layer of security. In addition, Access Level 0 supports several commands required by SEL communications processors. ➤ The Access Level 1 commands are primarily for reviewing information only (settings, metering, etc.), not changing it.

  • Page 306: Table 7.7 Access Commands

    The ACC, 2AC, and CAL commands (see Table 7.7) provide entry to the multiple access levels. Different commands are available at the different access levels, as shown in the SEL-787 Relay Command Summary at the end of this manual. Commands ACC and 2AC are explained together because they operate similarly.

  • Page 307: Table 7.8 Analog Command

    Communications 7.19 SEL ASCII Protocol and Commands prompt indicates the relay is now in Access Level 1. => If the entered password is incorrect, the relay prompts you for the password again ( ). The relay prompts for the password as many as three Password: ? times.

  • Page 308: Table 7.9 Analog Command Format

    7.20 Communications SEL ASCII Protocol and Commands Table 7.9 ANALOG Command Format Parameter Description Parameter c is the analog channel (either the channel name, e.g., A0301, or the channel number, e.g., 301). Parameter p is a percentage of full scale, or either the letter “R” or “r” to indicate ramp mode.
  • Page 309 Ramping Analog Output at 1.78 mA/min; full scale in 9.0 minutes. Press any key to end test CEV Command The SEL-787 provides Compressed ASCII event reports to facilitate event report storage and display. SEL communications processors and Analytic Assistant SEL-5601 Software take advantage of the ERATOR Compressed ASCII format.

  • Page 310: Table 7.10 Com Command

    7.22 Communications SEL ASCII Protocol and Commands COMMUNICATIONS Command The COM x command (see Table 7.10) displays communications statistics for the M communications channels. For more information on IRRORED communications, see Appendix I: M IRRORED IRRORED Communications. The summary report includes information on the failure of ROKA or ROKB.

  • Page 311: Table 7.12 Three Remote Bit States

    Communications 7.23 SEL ASCII Protocol and Commands Table 7.12 Three Remote Bit States Subcommand Description Access Level Set Remote bit (ON position) Clear Remote bit (OFF position) Pulse Remote bit for 1/4 cycle (MOMENTARY position) For example, use the following command to set Remote bit RB05: =>>CON RB05 S <Enter>...

  • Page 312: Table 7.16 Event Command (Event Reports)

    7.24 Communications SEL ASCII Protocol and Commands Separate the month, day, and year parameters with spaces, commas, slashes, colons, and semicolons. Set the year in 4-digit form (for dates 2000–2099). Global setting DATE_F sets the date format. ETH Command The ETH command (Access Level 1) may be used to display the Ethernet port (Port 1) status as shown in Figure 7.16 for the redundant fiber-optic (FX)

  • Page 313: Table 7.17 Event Command Format

    Communications 7.25 SEL ASCII Protocol and Commands Table 7.16 EVENT Command (Event Reports) (Sheet 2 of 2) Command Description Access Level EVE D n R Return the n digital data event report with 16-samples/cycle data. EVE DIF1 n Return the n differential element 1 event report, with 4-samples/cycle data.
  • Page 314 7.26 Communications SEL ASCII Protocol and Commands The following table describes the information displayed for each GOOSE IED. Description Transmit This field represents the GOOSE control reference information that GOOSE Control includes the IED name, ldInst (Logical Device Instance), LN0...

  • Page 315: Table 7.20 Group Command

    Communications 7.27 SEL ASCII Protocol and Commands An example response to the GOOSE commands is shown in Figure 7.18. #>GOOSE <Enter> GOOSE Transmit Status MultiCastAddr Ptag:Vlan StNum SqNum Code ----------------------------------------------------------------------------- SEL_787_2CFG/LLN0$GO$GooseDSet13 01-0C-CD-01-00-04 20376 Data Set: SEL_787_2CFG/LLN0$DSet13 GOOSE Receive Status MultiCastAddr...

  • Page 316: Table 7.22 History Command

    7.28 Communications SEL ASCII Protocol and Commands When you change the active group, the relay responds with a confirmation prompt: Answer Y <Enter> to change the active Are you sure (Y/N)? group. The relay asserts the Relay Word bit SALARM for one second when you change the active group.

  • Page 317: Table 7.24 Iri Command

    Communications 7.29 SEL ASCII Protocol and Commands IRI Command Use the IRI command to direct the relay to read the demodulated IRIG-B time code at the serial port or IRIG-B input (see Table 7.24). Table 7.24 IRI Command Command Description...

  • Page 318: Table 7.26 Ldp Command Parameters

    7.30 Communications SEL ASCII Protocol and Commands Table 7.26 LDP Command Parameters Parameter Description row1 row2 Append row1 to return a chronological progression of the first row1 rows. Append row1 and row2 to return all rows between row1 and row2, beginning with row1 and ending with row2.

  • Page 319: Table 7.29 Meter Command

    Communications 7.31 SEL ASCII Protocol and Commands If only one M port is enabled, the channel specifier (A or B) IRRORED may be omitted. To enable loopback mode for other than the 5-minute default, enter the desired number of minutes (1–5000) as a command parameter. To allow the loopback data to modify the RMB values, include the DATA parameter.

  • Page 320: Table 7.31 Meter Class

    7.32 Communications SEL ASCII Protocol and Commands Table 7.31 Meter Class Meter Class Fundamental Metering Energy Metering Maximum/Minimum Metering RMS Metering Thermal and RTD Metering Analog Input (transducer) Metering Math Variable Metering OGIC Demand Metering Peak Demand Metering Synchrophasor Metering...

  • Page 321: Table 7.32 Password Command

    Parameter level represents the relay Access Levels 1 or 2. access. SEL shall not be responsible for any damage resulting from unauthorized access. The factory-default passwords are as shown in Table 7.34.

  • Page 322: Table 7.36 Pul Outnnn Command

    7.34 Communications SEL ASCII Protocol and Commands PING Command When you are setting up or testing substation networks, it is helpful to determine if the network is connected properly and if the other devices are powered up and configured properly. The PING command (Access Level 2)

  • Page 323: Table 7.37 Quit Command

    Access Level QUIT Go to Access Level 0. Access Level 0 is the lowest access level; the SEL-787 performs no password check to descend to this level (or to remain at this level). R_S Command (Restore Factory Defaults) Use the R_S command (see Table 7.38) to restore factory-default settings.

  • Page 324: Table 7.41 Ser D Command

    7.36 Communications SEL ASCII Protocol and Commands If the requested SER report rows do not exist, the relay responds with No SER data SER D Command The SER D command shows a list of SER items that the relay has automatic-ally removed.

  • Page 325: Table 7.44 Set Command Editing Keystrokes

    Communications 7.37 SEL ASCII Protocol and Commands When you issue the SET command, the relay presents a list of settings one at < a time. Enter a new setting or press Enter> to accept the existing setting. Editing keystrokes are shown in Table 7.44.

  • Page 326: Figure 7.20 Show Command Example

    7.38 Communications SEL ASCII Protocol and Commands =>>SHO <Enter> Group 1 Relay Settings ID Settings := SEL-787 := TRNSFRMR RELAY Config Settings W1CT := WYE W2CT := WYE CTR1 := 100 CTR2 := 1000 := 50.0 ICOM := N VWDG1 := 138.00...
  • Page 327 Communications 7.39 SEL ASCII Protocol and Commands WDG2 Res TOC 51G2P := 0.50 51G2C := U3 51G2TD := 1.50 51G2RS := N 51G2CT := 0.00 51G2MR := 0.00 51G2TC := 1 WDG2 Neg Seq TOC 51Q2P := 6.00 51Q2C := U3 51Q2TD := 3.00...

  • Page 328: Table 7.47 Status Command (Relay Self-Test Status)

    7.40 Communications SEL ASCII Protocol and Commands STATUS Command (Relay Self-Test Status) The STA command (see Table 7.47) displays the status report. Table 7.47 STATUS Command (Relay Self-Test Status) Access Command Description Level STA n Display the relay self-test information n times (n = 1–32767).

  • Page 329: Table 7.49 Summary Command

    Communications 7.41 SEL ASCII Protocol and Commands Table 7.48 STATUS Command Report and Definitions (Sheet 2 of 2) STATUS Report Message Definition Designator Format DN_Rate DeviceNet card network communications data Text Data rate of 150, 250, or 500 kbps DN_Status...

  • Page 330: Table 7.50 Target Command (Display Relay Word Bit Status)

    Relay Word rows. The first four rows, representing the front-panel operation and target LEDs, correspond to Table 7.52. All Relay Word rows are described in Table J.1 and Table J.2. Relay Word bits are used in SEL control equations. See Appendix J: OGIC Relay Word Bits.

  • Page 331: Table 7.53 Time Command (View/Change Time)

    If you enter an invalid time, the SEL-787 responds with Invalid Time TRIGGER Command (Trigger Event Report) Use the TRI command (see Table 7.54) to trigger the SEL-787 to record data for high-resolution oscillography and event reports. Table 7.54 TRIGGER Command (Trigger Event Report)

  • Page 332: Table 7.55 Vec Command

    VEC Command (Show Diagnostic Information) Issue the VEC command under the direction of SEL. The information contained in a vector report is formatted for SEL in-house use only. Your SEL application engineer or the factory may request a VEC command capture to help diagnose a relay or system problem.

  • Page 333: Human-Machine Interface

    The SEL-787 features a straightforward menu-driven control structure presented on the front-panel liquid crystal display (LCD). Front- panel targets and other LEDs give a clear indication of the SEL-787 operation status. The features that help you operate the relay from the front panel include the following: ➤...

  • Page 334: Figure 8.1 Front-Panel Overview

    You can adjust the LCD screen contrast to suit your viewing angle and lighting conditions. To change screen contrast, press and hold the ESC pushbutton for two seconds. The SEL-787 displays a contrast adjustment box. NOTE: See the Preface for an explanation of typographic Pressing the Right Arrow pushbutton increases the contrast.

  • Page 335: Table 8.1 Front-Panel Automatic Messages (Fp_Auto := Override)

    Front-Panel Security Front-Panel Access Levels The SEL-787 front panel typically operates at Access Level 1 and provides viewing of relay measurements and settings. Some activities, such as editing settings and controlling output contacts, are restricted to those operators who know the Access Level 2 passwords.

  • Page 336: Figure 8.3 Password Entry Screen

    Front-Panel Menus and Screens Navigating the Menus The SEL-787 front panel gives you access to most of the information that the relay measures and stores. You can also use front-panel controls to view or modify relay settings. All of the front-panel functions are accessible through use of the six-button keypad and LCD display.

  • Page 337: Table 8.2 Front-Panel Pushbutton Functions

    Select the menu item at the cursor. Select the displayed setting to edit that setting. The SEL-787 automatically scrolls information that requires more space than provided by a 16-character LCD line. Use the Left Arrow and Right Arrow pushbuttons to suspend automatic scrolling and enable manual scrolling of this information.

  • Page 338: Figure 8.6 Main Menu And Meter Submenu

    (selecting ), the device displays the Analog Inputs message as shown in Figure 8.9. No Analog Input Cards Present Figure 8.9 Relay Response When No Analog Cards Are Installed SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 339: Figure 8.10 Relay Response When No Math Variables Enabled

    Clear EVENTS the relay displays as shown in Figure 8.14 after clearing the events data. Clearing Complete Figure 8.14 Relay Response When Events Are Cleared Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 340: Figure 8.15 Main Menu And Targets Submenu

    Relay Word bits OC1 or Open Breaker 1 OGIC ® OC2, which will open breaker 1 or 2 via SEL equations TR1 or TR2. See Table 4.26 for equations TR1 and TR2 and Table J.2 for the definitions of Word bits OC1 and OC2.

  • Page 341: Figure 8.18 Control Menu And Outputs Submenu

    Select the menu item to assert Relay Word bits CC1 Close Breaker 1 or CC2, which will close the breaker 1 or 2 via the CL1 or CL2 SEL OGIC equation (see Figure 4.51). Note that this requires Level 2 access.

  • Page 342: Figure 8.20 Main Menu And Set/Show Submenu

    Up Arrow and Down Arrow pushbuttons to change the value. Press the ENT pushbutton to enter the new setting. ® Setting changes can also be made using QuickSet SEL-5030 ERATOR Software or ASCII SET commands via a communications port. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 343: Figure 8.21 Set/Show Menu

    . . . Trip/Close Logic (Port Selected) (F Selected) PORT Protocol Select Comm Settings (Active Selected) Active Group (Date Selected) Date 03/29/2008 (Time Selected) Time 14:04:36 (Password Selected) Password Figure 8.21 SET/SHOW Menu Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 344: Figure 8.22 Main Menu And Status Submenu

    Operation and Target LEDs Programmable LEDs The SEL-787 provides quick confirmation of relay conditions via operation and target LEDs. Figure 8.23 shows this region with factory-default text on the front-panel configurable labels. See Target LED Settings on page 4.106 for the SEL control equations.

  • Page 345: Table 8.3 Possible Warning Conditions (Flashing Trip Led)

    Pushbutton Target Reset For a trip event, the SEL-787 latches the trip-involved target LEDs except for the ENABLED LED. Press the TARGET RESET pushbutton to reset the latched target LEDs. When a new trip event occurs and the previously latched trip targets have not been reset, the relay clears the latched targets and displays the new trip targets.

  • Page 346: Figure 8.25 Operator Control Pushbuttons And Leds

    LEDs are independent of the pushbutton. Pushbutton LEDs are programmable using front-panel settings PBnm_LED (where n = 1 through 4 and m = A or B). PBnm _LED settings are SEL OGIC control equations that, when asserted, illuminate the corresponding LED for as long as the input is asserted.

  • Page 347: Table 8.4 Sel-787 Front-Panel Operator Control Functions

    Option: Set a delay, so the operator can press the TRIP operator control pushbutton and BRKR 2 OPEN then move a safe distance away from the breaker before the SEL-787 issues a trip (the TRIP operator control comes with no set delay in the factory settings). With a set delay, press the TRIP operator control pushbutton momentarily and notice the corresponding BRKR OPEN LED flashes on and off during the delay time, indicating a pending trip.
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  • Page 349: Overview

    Analyzing Events Instruction Manual Overview The SEL-787 Transformer Protection Relay provides several tools (listed below) to analyze the cause of relay operations. Use these tools to help diagnose the cause of the relay operation and more quickly restore the protected equipment to service.

  • Page 350: Event Reporting

    SET R command in SET Command (Change Settings) on page 7.36 and Report Settings (SET R Command) on page SET.52. Triggering The SEL-787 triggers (generates) an event report when any of the following occur: ➤ Relay Word bit TRIP asserts ➤...

  • Page 351: Figure 9.1 Example Event Summary

    DELTA_Y := WYE) or phase-to-phase voltages (if DELTA_Y := DELTA), optional Voltage Inputs card required ➤ Hottest RTD temperatures, SEL-2600 RTD Module or internal RTD card option required The relay includes the event summary in the event report. The identifiers, date, and time information are at the top of the event report, and the remaining information follows at the end (See Figure 9.3).

  • Page 352: Table 9.1 Event Types

    Breaker Failure Trip (BFT1 OR BFT2) AND TRIP Remote Trip REMTRIP AND TRIP CommIdleLossTrip (COMMIDLE OR COMMLOSS) AND TRIP Trigger Serial port TRI command ER Trigger ER Equation assertion Trip TRIP with no known cause SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 353 See Figure 9.2 for a sample event history. Use this report to view the events that are presently stored in the SEL-787. The event history contains the following: ➤...

  • Page 354: Figure 9.2 Sample Event History

    Event Summary ➤ Settings in service at the time of event retrieval, consisting of Group, Logic, Global, and Report settings classes The SEL-787 supports the following three separate event report types: ➤ Standard Analog Event Report (EVE command) ➤ Digital Event Report (EVE D command) ➤...
  • Page 355 CTs do not have any such issue. Filtered and Unfiltered Analog Event Reports The SEL-787 samples the power system measurands (ac voltage and ac current) 16 times per power system cycle. A digital filter extracts the fundamental frequency component of the measurands. The relay operates on the filtered values and reports these values in the standard, filtered event report.

  • Page 356: Table 9.2 Analog Event Report Columns Definitions

    ) in the column following the column identifies the row with the maximum phase current. The maximum phase current is calculated from the row identified with the asterisk and the row one quarter-cycle SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 357: Figure 9.3 Example Standard 15-Cycle Analog Event Report 1/4-Cycle Resolution

    0.0 -12637 10303 2334 60.03 . .* 492.5 -54.0 -155.5-2055.0 470.0 1575.0 -1.8 -4760 -8729 13489 60.03 . .* Figure 9.3 Example Standard 15-Cycle Analog Event Report 1/4-Cycle Resolution (Sheet 1 of 4) Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 358 2372 60.03 . .* 492.0 -53.5 -155.5-2055.0 470.0 1575.0 -1.2 -4723 -8758 13481 60.03 . .* Firmware Identifier Serial No = 000000000000000 FID = SEL-787-X122HR-V0-Z001001-D20080212 CID = 26FF Firmware Checksum Identifier EVENT LOGS = Event: Diff 87 Trip Targets 11100000 Freq (Hz) 60.0...
  • Page 359 := ORED51T ORED50T 87U 87R 27P1T 27P2T 59P1T 59P2T 59Q1T 59Q2T 3PWR1T 3PWR2T REF1F 24D1T 24C2T RTDT SER3 := 81D1T 81D2T 81D3T 81D4T SER4 := SALARM Figure 9.3 Example Standard 15-Cycle Analog Event Report 1/4-Cycle Resolution (Sheet 3 of 4) Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 360 Voltages are processed similarly. In Figure 9.4, note that any two rows of current data from the analog event report, 1/4 cycle apart, can be used to calculate rms current values. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 361: Figure 9.4 Derivation Of Analog Event Report Current Values And Rms Current Values From Sampled Current Waveform

    The present sample (IA = 940.7 A) is a real rms current value that relates to the phasor rms current value: –   1204 A • cos 38.6 940.7 A Equation 9.2 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 362: Figure 9.5 Derivation Of Phasor Rms Current Values From Event Report Current Values

    (if not listed, n is assumed to be 1). EVE D R gives the RAW report with 16 samples/cycle. Refer to the example event report in Figure 9.6 to view the digital event report columns. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 363: Table 9.3 Digital Event Report Column Definitions

    51P24P picked up 51P24T picked up 51G21 51G21P picked up 51G21T picked up 51G22 51G22P picked up 51G22T picked up 51Q21 51Q21P picked up 51Q21T picked up 51Q22 51Q22P picked up 51Q22T picked up Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 364 Both 81D3T and 81D4T picked up. BFI1 BFI1 picked up BFT1 picked up BFI2 BFI2 picked up BFT2 picked up TRIP TRIP picked up REF1P picked up REF1F picked up REF1R picked up SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 365 Both OUT401 and OUT402 picked up Outputs 4034 OUT403 picked up OUT404 picked up Both OUT403 and OUT404 picked up Outputs 5012 OUT501 picked up OUT502 picked up Both OUT501 and OUT502 picked up Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 366: Figure 9.6 Example Standard 15-Cycle Digital Event Report (Eve D Command) 1/4 Cycle Resolution

    ..r*r ..rrr ..r ..r ..* ..... .* Figure 9.6 Example Standard 15-cycle Digital Event Report (EVE D Command) 1/4 Cycle Resolution (Sheet 1 of 2) SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 367 Quantities IOPz, IRTz, IzF2 and IzF5 for z = 1, 2 and 3. Table 9.5 gives the Differential event report digital column definitions for the Protection and Control elements and the base model inputs and outputs. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 368: Table 9.4 Differential Event Report Column Definitions For Analog Quantities

    Both 2_4HB1 and 5HB1 picked up 2_4HB2 picked up 5HB2 picked up Both 2_4HB2 and 5HB2 picked up 2_4HB3 picked up 5HB3 picked up Both 2_4HB3 and 5HB3 picked up TH5 picked up TH5T picked up SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 369 * 1..1..* 782.6 636.0 * 1..1..* Figure 9.7 Example Standard 15-cycle Differential Event Report (EVE DIF1 Command) 1/4 Cycle Resolution (Sheet 1 of 2) Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 370: Sequential Events Recorder (Ser) Report

    You may rename as many as 20 of the SER trigger conditions using the ALIAS settings. For instance, the factory-default alias setting 2 renames Relay Word bit PB02 for reporting in the SER: ALIAS2:= PB02 FP_LOCK PICKUP DROPOUT SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 371: Figure 9.8 Example Sequential Events Recorder (Ser) Event Report

    Figure 9.3. =>SER <Enter> SEL-787 Date: 02/14/2008 Time: 13:22:53 TRNSFRMR RELAY Time Source: Internal Serial No = 000000000000000 FID = SEL-787-X122HR-V0-Z001001-D20080212 CID = 26FF DATE TIME ELEMENT STATE 02/14/2008 13:09:57.353 Asserted 02/14/2008 13:09:57.353...
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  • Page 373: Overview

    ➤ Tests performed periodically once the relay is in service This section provides information on both types of testing for the SEL-787 Transformer Protection Relay. Because the SEL-787 is equipped with extensive self-tests, traditional periodic test procedures may be eliminated or greatly reduced.

  • Page 374: Table 10.1 Resultant Scale Factors For Inputs

    Testing and Troubleshooting Testing Tools Low-Level Test The SEL-787 has a low-level test interface on the 6 ACI current card (Slot Z) and 1 ACI Neutral current card or 1 ACI/3 AVI current/voltage card (Slot E). Interface You can test the relay in either of two ways: conventionally by applying ac signals to the relay inputs or by applying low magnitude ac voltage signals to the test interface on the printed circuit boards.

  • Page 375: Commissioning Tests

    Commissioning tests confirm that the relay is properly connected including the control signal inputs and outputs. The following connection tests help you enter settings into the SEL-787 and verify that the relay is properly connected. Brief functional tests ensure that the relay settings are correct.
  • Page 376 After the relay is energized, the front-panel green ENABLED LED should illuminate. Step 5. Use the appropriate serial cable (SEL cable C234A or equivalent) to connect a PC to the relay. Step 6. Start the PC terminal emulation software and establish communication with the relay.

  • Page 377: Figure 10.2 Three-Phase Wye Ac Connections

    METER command to verify that the relay is measuring the magnitude and phase angle of both voltage and current correctly, taking into account the relay PTR, CTR1, and CTR2 settings and the fact that the quantities are displayed in primary units. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 378: Table 10.2 Serial Port Commands That Clear Relay Data Buffers

    METER command. METER > Fundamental ➢ Phase current magnitudes should be nearly equal. ➢ Phase current angles should be balanced, have proper phase rotation, and have the appropriate phase relationship to the phase voltages. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 379: Table 10.3 Ctr1 Phase Current Measuring Accuracy

    Phase voltage magnitudes should be nearly equal. ➢ Phase voltage phase angles should be balanced and have proper phase rotation. The SEL-787 is now ready for continuous service. Functional Tests Phase Current Measuring Accuracy Step 1. Connect the current source to the relay, as shown in Figure 10.4.

  • Page 380: Table 10.4 Ctr2 Phase Current Measuring Accuracy

    CTRn (where n = VIWDG setting), PTR, and PHROT setting values. Step 4. Apply the current and voltage quantities shown in Column 1 of Table 10.5. Values are given for PHROT := ABC and PHROT := ACB. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 381: Table 10.5 Power Quantity Accuracy-Wye Voltages

    Step 4. Apply the current and voltage quantities shown in Column 1 of Table 10.6. Values are given for PHROT := ABC and PHROT := ACB. Step 5. Use the front-panel or the serial port MET command to METER verify the results. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 382: Table 10.6 Power Quantity Accuracy-Delta Voltages

    = VIWDG setting Periodic Tests (Routine Maintenance) Because the SEL-787 is equipped with extensive self-tests, the most effective maintenance task is to monitor the front-panel messages after a self-test failure. In addition, each relay event report generated by a fault should be reviewed.

  • Page 383: Table 10.8 Relay Self-Tests

    Testing and Troubleshooting 10.11 Self-Test Self-Test The SEL-787 runs a variety of self-tests. The relay takes the following corrective actions for out-of-tolerance conditions (see Table 10.8): ➤ Protection Disabled: The relay disables protection and control elements and trip/close logic. All output contacts are deenergized.
  • Page 384 Latched Fail if ID registers do not match status report. expected or if FPGA programming is unsuccessful Contact SEL if failure returns. External RAM (power up) Latched Performs a read/write test on system External RAM (run time)
  • Page 385 –50 mV STA C, to clear the warning in the Latched Measure dc offset at each input channel status report. +50 mV Contact SEL if failure returns. +0.9 V Fail 0.855 to Latched Status Fail 0.945 V +0.9 V Failure Monitor +0.9 V power supply...
  • Page 386 Failure CID (Configured IED Description) file Status Fail (access) CID File Failure Failure to Access/Read CID File Exception Vector Latched Vector nn Automatic restart. Relay Disabled CPU Error Contact SEL if failure returns. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 387: Table 10.9 Troubleshooting

    Use the front-panel RELAY STATUS function to view self-test results. 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 99163-5603 U.S.A.
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  • Page 389: Table A.1 200 Series Firmware Revision History

    Firmware and Manual Versions Firmware Determining the To find the firmware version number in your SEL-787 Transformer Protection Relay, use the STA command (see STATUS Command (Relay Self-Test Status) Firmware Version on page 7.40 for more information on the STA command). The firmware in Your Relay revision number is after the R, and the release date is after the D.

  • Page 390: Icd File

    DELTA_Y := DELTA and SINGLEV := Y. With this settings combination, the V/Hz did not function and the MET report showed zero for V/Hz. Firmware version R209 is for upgrading relays with R200–R208. SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 391 Enhanced firmware to make serial number visible to IEC 61850 20111107 protocol and also revised the ICD file to add serial and part number information to PhyNam DO similar to the SEL-400 series relays. ➤ Corrected an issue with the rms meter values, where in some cases the values would spike for a short time.
  • Page 392 ➤ SEL-787-R200-V0-Z001001-D20091015 Revised firmware for processor update. Previous versions cannot be 20091015 upgraded to R200. ➤ Extended event report storage capability to at least seventy-seven 15-cycle or nineteen 64-cycle event reports. SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 393 Corrected an issue that caused port settings to be rejected when relay ® settings were downloaded using QuickSet SEL-5030 ERATOR Software. QuickSet reported with a message that ERATOR settings files were not received. Firmware version R109 is for upgrading relays with R100–R108. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 394 Added IRIG-B input capability to fiber-optic serial Port 2 option including a new Time-Synchronization Source setting TIME_SRC. ➤ Added front-panel setting FP_AUTO to allow choice between OVERRIDE and ROTATING display messages. ➤ SEL-787-R103-V0-Z001001-D20090420 Improved harmonic measurement accuracy. 20090420 SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 395: Table A.3 Devicenet Card Versions

    A new EDS file is released only when there is a change in the Modbus/DeviceNet parameters. The EDS file and an ICON file for the SEL-787 are zipped together on the SEL-787 Product Literature CD (SEL-xxxRxxx.EXE). The file can also be downloaded from the SEL website at www.selinc.com.

  • Page 396: Table A.5 Sel-787 Icd File Revision History

    Table A.5 lists the ICD file versions, a description of modifications, and the instruction manual date code that corresponds to the versions. The most recent version is listed first. Table A.5 SEL-787 ICD File Revision History Relay Architect Manual...
  • Page 397 Firmware and Manual Versions ICD File Table A.5 SEL-787 ICD File Revision History Relay Architect Manual ERATOR ClassFile configVersion Summary of Revision Firmware Architect File Software Date Version Compatibility Description Version Code ➤ Added new RMS1MMXU2, RMS2MMXU3, and METMHAI1 Logical Nodes and attributes to MET LDevice.

  • Page 398: Table A.6 Instruction Manual Revision History

    Appendix A ➤ Added ICD File section including Table A.5: ICD File Revision History. Appendix F ➤ Updated Architect and SEL ICD File Versions section. ERATOR Appendix I ➤ Updated the RBADPU setting prompt description in Table I.5: M Protocol Settings.
  • Page 399 Added Table F.16: Logical Device: CFG (Configuration). Appendix J ➤ Updated the definition for the SALARM Relay Word bit. ➤ Added the MATHERR Relay Word bit to Table J.1: SEL-787 Relay Word Bits and Table J.2: Relay Word Bit Definitions. 20130426 Preface ➤...
  • Page 400 Addendum to R204 for the self-test firmware improvements. Section 1 20101217 ➤ Revised Analog Output (1AO) accuracy specification to < ±1%, full scale, at 25°C in Specifications. ➤ Updated Dielectric (HiPot) type tests in Specifications. SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 401 Section 1 2010730 ➤ Updated Analog Inputs accuracy specifications and Type Tests descriptive data. Clarified fiber-optic port as ST and SEL-2812 compatible throughout sections. Section 2 ➤ Added SEL 4DI/3 DO (2 Form C, 1 Form B) card information. Added note that digital inputs and outputs are polarity neutral.
  • Page 402 Section 4 ➤ Revised Figure 4.1: Percentage Restraint Differential Characteristic (scaling issue). ➤ Clarified differential element IRT differences between the SEL-787 and SEL-587/SEL-387 and added differential element settings differences between the SEL-787 and SEL-587/SEL-387. Section 7 ➤ Added Ethernet network configurations figures and IRIG-connection diagrams.

  • Page 403: Overview

    SEL-701 Relay and SEL-734 Meter. SEL occasionally offers firmware upgrades to improve the performance of your relay. Because the SEL-787 relays store firmware in flash memory, changing physical components is not necessary. Upgrade the relay firmware by downloading a file from a personal computer to the relay via the front-...
  • Page 404 QuickSet ERATOR menu bar to launch a wizard that walks you through the steps to load firmware into your SEL device. Refer to Section 3: PC Software for setup and connection procedures for QuickSet. ERATOR Firmware Loader will not start if: ➤...
  • Page 405 If there are any event reports to be saved, click the Get Selected Event button after selecting the events. After saving them, click the Return to Firmware Loader button. Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 406 QuickSet ERATOR Step 2. Transfer Firmware. Click Next to begin the firmware transfer. Step 3. Load Firmware. During this step, the device is put in SEL . The BOOT transfer speed is maximized and the firmware transfer begins. SEL-787 Relay...
  • Page 407 Settings are converted automatically, if necessary. Load Firmware into Another Device. Returns the wizard to Step 1: Prepare Device to repeat the firmware-loading process with another device. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 408: Upgrade Firmware Using A Terminal Emulator

    Step 6. Begin the transfer of new firmware to the relay by issuing the REC command. Step 7. Type Y to erase the existing firmware or press <Enter> to abort. Step 8. Press any key (for example, <Enter>) when the relay sends a prompt. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 409: Figure B.1 Firmware File Transfer Process

    Enter Y. This will save the relay calibration settings. The relay will respond: Config Accepted The relay will reboot and come up ENABLED. f. Restore relay settings back to the settings saved in Step 3. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 410: Relays With Iec 61850 Option

    Communications Processor connected. This step re-establishes automatic data collection between the SEL-2032, SEL-2030, or SEL-2020 Communications Processor and the SEL relay. Failure to perform this step can result in automatic data collection failure when cycling communications processor power.

  • Page 411: Factory Assistance

    Firmware Upgrade Instructions 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 99163-5603 U.S.A. Telephone: +1.509.332.1890 Fax: +1.509.332.7990...
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  • Page 413: Appendix C: Sel Communications Processors

    We originally designed SEL ASCII commands for communication between the relay and a human operator via a keyboard and monitor or a printing terminal. A computer with a serial port can also use the SEL ASCII protocol to communicate with the relay, collect data, and issue commands.

  • Page 414: Table C.2 Compressed Ascii Commands

    Fast Meter and Fast Operate messages to populate a local database and to perform SCADA operations. At the same time, you can use the binary data stream to connect transparently to the SEL-787 and use the ASCII data stream for commands and responses.

  • Page 415: Sel Communications Processor

    SEL IED Non-SEL IED Figure C.1 SEL Communications Processor Star Integration Network In the star topology network in Figure C.1 the SEL communications processor uses the following substation integration functions: ➤ Collection of real-time data from SEL and non-SEL IEDs ➤...

  • Page 416: Table C.3 Sel Communications Processors Protocol Interfaces

    You can add additional communications processors to provide redundancy and eliminate possible single points of failure. SEL communications processors provide an integration solution with a reliability comparable to that of SEL relays. In terms of MTBF (mean time between failures), SEL communications processors are 100 to 1000 times more reliable than computer-based and industrial technology-based solutions.

  • Page 417: Sel Communications Processor And Relay Architecture

    SEL communications processors equipped with an SEL-2701 Ethernet Processor can provide a UCA2 interface to SEL-787 relays and other serial IEDs. The SEL-787 data appear in models in a virtual device domain. The combination of the SEL-2701 with an SEL communications processor offers a significant cost savings because you can use existing IEDs or purchase less expensive IEDs.

  • Page 418: Figure C.3 Enhancing Multidrop Networks With Sel Communications Processors

    Enhancing You can also use an SEL communications processor to enhance a multidrop architecture similar to the one shown in Figure C.3. In this example, the SEL Multidrop Networks communications processor enhances a system that uses the SEL-2701 with an Ethernet HMI multidrop network.

  • Page 419: Table C.4 Sel Communications Processor Port 1 Settings

    Cable C273A Port 3 SEL-787 Relay Figure C.4 Example of SEL Relay and SEL Communications Processor Configuration Table C.4 shows the Port 1 settings for the SEL communications processor. Table C.4 SEL Communications Processor Port 1 Settings Setting Setting Description...

  • Page 420: Table C.6 Sel Communications Processor Port 1 Automatic Messaging Settings

    No USER region registers reserved Table C.7 shows the map of regions in the SEL communications processor for data collected from the SEL-787. Use the MAP n command to view these data. Table C.7 SEL Communications Processor Port 1 Region Map...

  • Page 421: Table C.8 Communications Processor Meter Region Map

    SEL Communications Processors SEL Communications Processor and Relay Architecture Table C.8 Communications Processor METER Region Map Item Starting Address Type _YEAR 2000h DAY_OF_YEAR 2001h TIME (ms) 2002h int[2] MONTH 2004h char DATE 2005h char YEAR 2006h char HOUR 2007h char...

  • Page 422: Table C.9 Communications Processor Target Region Map

    RB01 in the SEL-787. Breaker bits BR1 and BR2 operate differently than remote bits. There are two breaker bits in the SEL-787. For Circuit Breaker n, when you set BRn, the SEL communications processor sends a message to the SEL-787 that asserts the OCn bit for one processing interval.

  • Page 423: Table C.10 Communications Processor Demand Region Map

    SEL Communications Processor and Relay Architecture Demand Data Table C.10 lists the demand data available in the SEL Communications Processor and the location and data type for the memory areas within D3 (Data Region 3). The type field indicates the data type and size. The type “int”...
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  • Page 425: Appendix Ddnp3 Communications

    Appendix D DNP3 Communications Instruction Manual Overview The SEL-787 Transformer Protection Relay provides a Distributed Network Protocol Version 3.0 (DNP3) Level 2 Outstation interface for direct serial and LAN/WAN network connections to the device. This section covers the following topics: ➤...

  • Page 426: Table D.2 Selected Dnp3 Function Codes

    The most common DNP3 function codes are listed in Table D.2. Table D.2 Selected DNP3 Function Codes (Sheet 1 of 2) Function Function Description Code Read Request data from the outstation Write Send data to the outstation SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 427 With various trade-offs, each method is less demanding of communication bandwidth than the previous one. For example, unsolicited report-by-exception consumes less communication bandwidth than polled report-by-exception because that method does not require polling Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 428: Table D.3 Dnp3 Access Methods

    Sometimes, DNP3 outstations assign special operation characteristics to the latch and pulse selections. Table D.12 describes control point operation for the SEL-787. Conformance Testing In addition to the protocol specifications, the DNP Users Group has approved conformance-testing requirements for Level 1 and Level 2 devices.
  • Page 429 Link layer confirmations shall be disabled The Technical Committee has registered a standard port number, 20000, for DNP3 with the Internet Assigned Numbers Authority (IANA). This port is used for either TCP or UDP. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 430: Dnp3 In The Sel-787

    The SEL-787 is a DNP3 Level 2 remote (outstation) device. Data Access Table D.5 lists DNP3 data access methods along with corresponding SEL-787 settings. You must select a data access method and configure each DNP3 master for polling as specified.
  • Page 431 For example, if you use the settings of 0.10 seconds for MAXDLY and 0.05 seconds for MINDLY, the SEL-787 will insert a random delay of 50 to 100 ms (milliseconds) between the end of carrier detection and the start of data transmission (see Figure D.2).

  • Page 432: Figure D.2 Message Transmission Timing

    Event Data DNP3 event data objects contain change-of-state and time-stamp information that the SEL-787 collects and stores in a buffer. Points assigned in the Binary Input Map that are also assigned in the Sequential Events Recorder (SER) settings carry the time stamp of actual occurrence. Binary input points not assigned in the SER settings will carry a time stamp based on the DNP map scan time.

  • Page 433: Table D.6 Sel-787 Event Buffer Capacity

    NUMEVEn. The device also sends an unsolicited report if the age of the oldest event in the master n buffer exceeds AGEEVEn. The SEL-787 has the buffer capacities listed in Table D.6.
  • Page 434 “master”). Modem Support The SEL-787 DNP implementation includes modem support for serial ports. Your DNP3 master can dial-in to the SEL-787 and establish a DNP3 connection. The SEL-787 can automatically dial out and deliver unsolicited DNP3 event data. When the device dials out, it waits for the “CONNECT” message from the local modem and for assertion of the device CTS line before continuing the DNP transaction.

  • Page 435: Table D.7 Port Dnp3 Protocol Settings

    DNP3 Communications D.11 DNP3 in the SEL-787 Table D.7 Port DNP3 Protocol Settings (Sheet 1 of 2) Name Description Range Default EDNP Enable DNP3 Sessions 0–3 DNPNUM DNP3 TCP and UDP Port 1–65534 20000 DNPADR Device DNP3 address 0–65534 Session 1 Settings DNPIP1 IP address (zzz.yyy.xxx.www)

  • Page 436: Table D.8 Serial Port Dnp3 Modem Settings

    D.12 DNP3 Communications DNP3 in the SEL-787 Table D.7 Port DNP3 Protocol Settings (Sheet 2 of 2) Name Description Range Default Session 3 Settings DNPIP3 IP address (zzz.yyy.xxx.www) 15 characters “” DNPTR3 Transport protocol UDP, TCP • • • URETRY3 Unsolicited messages maximum retry attempts 2–10...

  • Page 437: Dnp3 Documentation

    Object List Table D.9 lists the objects and variations with supported function codes and qualifier codes available in the SEL-787. The list of objects conforms to the format laid out in the DNP specifications and includes supported objects for DNP3 implementation Level 2 and above and nonsupported objects for DNP3 implementation Level 2 only.
  • Page 438 D.14 DNP3 Communications DNP3 Documentation Table D.9 SEL-787 DNP Object List (Sheet 2 of 5) Request Response Obj. Var. Description Funct. Qual. Funct. Qual. Codes Codes Codes Codes 243 Device Attributes—Device manufacturer’s hardware 0,17 version 245 Device Attributes—User-assigned location name 0,17 246 Device Attributes—User assigned ID code/number...
  • Page 439 DNP3 Communications D.15 DNP3 Documentation Table D.9 SEL-787 DNP Object List (Sheet 3 of 5) Request Response Obj. Var. Description Funct. Qual. Funct. Qual. Codes Codes Codes Codes 32-Bit Frozen Counter With Time of Freeze 16-Bit Frozen Counter With Time of Freeze...
  • Page 440 D.16 DNP3 Communications DNP3 Documentation Table D.9 SEL-787 DNP Object List (Sheet 4 of 5) Request Response Obj. Var. Description Funct. Qual. Funct. Qual. Codes Codes Codes Codes Short Floating Point Frozen Analog Input Long Floating Point Frozen Analog Input Analog Change Event—All Variations...
  • Page 441 DNP3 Communications D.17 DNP3 Documentation Table D.9 SEL-787 DNP Object List (Sheet 5 of 5) Request Response Obj. Var. Description Funct. Qual. Funct. Qual. Codes Codes Codes Codes Time Delay—All Variations Time Delay, Coarse Time Delay, Fine 7, quantity=1 All Classes of Data...

  • Page 442: Table D.10 Dnp3 Reference Data Map

    Protocol support in the SEL-787. Reference Data Map Table D.10 shows the SEL-787 reference data map. The reference map shows the data available to a DNP3 master. You can use the default map or the custom DNP3 mapping functions of the SEL-787 to retrieve only the points required by your application.

  • Page 443: Table D.11 Dnp3 Default Data Map

    Default Data Map The default data map is an automatically generated subset of the reference map. All data maps are initialized to the default values, based on the SEL-787 part number. Table D.11 shows the SEL-787 default data map. If the default...
  • Page 444 Object 34 dead bands after a warm (HIS C) or cold start (power cycle). presence of Analog Input cards in slots 3, 4, and 5. If present, the SEL-787 adds each analog input point label, AIx0y (where x is the slot and y is the point number), to the default map in numerical order to the DNP map.
  • Page 445 RB1–RB32, OC/CC respond with the on-line bit set and the state of the requested bit. Reads from control-only binary output points respond with the on-line bit set and a state of 0. The SEL-751 supports Control Relay Output Block objects (Object 12,Variation 1). The control relays correspond to the remote bits and other functions as shown previously.

  • Page 446: Table D.12 Sel-787 Object 12 Control Operations

    Operation Table D.12. Pulse operations provide a pulse with duration of one protection processing interval. Table D.12 SEL-787 Object 12 Control Operations Label Close/Pulse On Trip/Pulse On Nul/Latch On...

  • Page 447: Figure D.3 Sample Response To Sho Dnp Command

    D.23 DNP3 Documentation Configurable Data One of the most powerful features of the SEL-787 implementation is the ability to remap DNP3 data and, for analog values, specify per-point scaling Mapping and dead bands. Remapping is the process of selecting data from the reference map and organizing it into a data subset optimized for your application.

  • Page 448: Figure D.4 Port Map Command

    POINT LABEL RB01 RB02 RB03 … RB30 RB31 RB32 Counters -------------------------------------------------------------------------------- INDEX POINT LABEL EVENT CLASS DEADBAND SC01 SC02 SC03 … SC30 SC31 SC32 Figure D.4 Port MAP Command (Sheet 1 of 2) SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 449 DNP3 data maps. You can also use QuickSet ERATOR SEL-5030 Software, which is recommended for this purpose. Scaling factors allow you to overcome the limitations imposed by the integer nature of the default variations of Objects 30 and 32. For example, the device rounds a value of 11.4 amps to 11 amps.

  • Page 450: Table D.13 Sample Custom Dnp3 Ai Map

    The following example describes how to create a custom DNP3 map by point type. The example demonstrates the SEL ASCII command SET DNP for each point type, but the entire configuration may be completed without saving changes between point types.

  • Page 451: Figure D.6 Analog Input Map Entry In Ac Sel

    Figure D.8. You may populate the custom BO map with any of the 32 remote bits (RB01–RB32). You can define bit pairs in BO maps by including a colon (:) between the bit labels. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 452: Figure D.8 Sample Custom Dnp3 Bo Map Settings

    Figure D.9. Figure D.9 Binary Output Map Entry in QuickSet Software ERATOR The binary input (BI) maps are modified in a similar manner, but pairs are not allowed. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 453: Appendix E: Modbus Rtu Communications

    Enable the Modbus TCP protocol with the optional Ethernet port settings. The SEL-787 supports as many as two Modbus TCP sessions. The TCP port number for each session is selected with the Ethernet port settings. The default TCP port number is the Modbus TCP registered port 502.

  • Page 454: Communications Protocol

    Cyclical Redundancy Check (CRC) 2 bytes The SEL-787 SLAVEID setting defines the device address. Set this value to a unique number for each device on the Modbus network. For Modbus communication to operate properly, no two slave devices may have the same address.

  • Page 455: Table E.3 Sel-787 Modbus Exception Codes

    CRC. If the calculated CRC matches the CRC sent by the SEL-787, the master device uses the data received. If there is no match, the check fails and the message is ignored. The devices use a similar process when the master sends queries.

  • Page 456: Table E.5 Responses To 01H Read Discrete Output Coil Query Errors

    2 bytes CRC-16 To build the response, the SEL-787 calculates the number of bytes required to contain the number of bits requested. If the number of bits requested is not evenly divisible by eight, the device adds one more byte to maintain the balance of bits, padded by zeroes to make an even byte.

  • Page 457: Table E.7 02H Sel-787 Inputs

    Table E.7 includes the coil address in decimal and lists all possible inputs (Relay Word bits) available in the device. Note that the command depends on the device hardware configuration; the device responds only to installed cards. Table E.7 02h SEL-787 Inputs (Sheet 1 of 3) Coil Address Function Code...
  • Page 458 Modbus RTU Communications Communications Protocol Table E.7 02h SEL-787 Inputs (Sheet 2 of 3) Coil Address Function Code Coil Description (Decimal) Supported 264–271 Relay Element Status Row 33 272–279 Relay Element Status Row 34 280–287 Relay Element Status Row 35 288–295...
  • Page 459 Modbus RTU Communications Communications Protocol Table E.7 02h SEL-787 Inputs (Sheet 3 of 3) Coil Address Function Code Coil Description (Decimal) Supported 608–615 Relay Element Status Row 76 616–623 Relay Element Status Row 77 624–631 Relay Element Status Row 78 632–639...

  • Page 460: Table E.8 Responses To 02H Read Input Query Errors

    Register Command function code. Most masters use 3X references with this function code. If you are accustomed to 3X references with this function code, for five-digit addressing, add 30001 to the standard database address. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 461: Table E.11 04H Read Input Register Command

    2 bytes CRC-16 Table E.14 lists the coil numbers supported by the SEL-787. The physical coils (coils 0–26) are self-resetting. Pulsing a Set remote bit (decimal address 59 through 90) causes the remote bit to be cleared at the end of the pulse.
  • Page 462 E.10 Modbus RTU Communications Communications Protocol Table E.14 01h, 05h SEL-787 Output (Sheet 2 of 3) Coil Address (Decimal) Function Code Supported Coil Description 01, 05 Pulse OUT303 1 second 01, 05 Pulse OUT304 1 second 01, 05 Reserved 01, 05...
  • Page 463 Modbus RTU Communications E.11 Communications Protocol Table E.14 01h, 05h SEL-787 Output (Sheet 3 of 3) Coil Address (Decimal) Function Code Supported Coil Description 01, 05 RB23 01, 05 RB24 01, 05 RB25 01, 05 RB26 01, 05 RB27 01, 05...

  • Page 464: Table E.15 Responses To 05H Force Single Coil Query Errors

    Illegal Data Value (03h) Bad Packet Format 06h Preset Single The SEL-787 uses this function to allow a Modbus master to write directly to a database register. Refer to the Modbus Register Map in Table E.34 for a list Register Command of registers that can be written by using this function code.

  • Page 465: Table E.18 08H Loopback Diagnostic Command

    E.13 Communications Protocol 08h Loopback The SEL-787 uses this function to allow a Modbus master to perform a diagnostic test on the Modbus communications channel and relay. When the Diagnostic Command subfunction field is 0000h, the relay returns a replica of the received message.

  • Page 466: Table E.21 10H Preset Multiple Registers Query Error Messages

    Invalid register data value Illegal Data Value (03h) Illegal Write 60h Read Parameter The SEL-787 uses this function to allow a Modbus master to read parameter information from the relay. One parameter (setting) is read in each query. Information Command Table E.22 60h Read Parameter Information Command...

  • Page 467: Table E.23 60H Read Parameter Descriptor Field Definition

    The relay response to errors in the query are shown Table E.25. Table E.25 Responses to 60h Read Parameter Information Query Errors Communication Error Error Code Returned Counter Increments Illegal parameter to read Illegal Address (02h) Invalid Address Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 468: Table E.26 61H Read Parameter Text Command

    Modbus RTU Communications Communications Protocol 61h Read Parameter The SEL-787 uses this function to allow a Modbus master to read parameter text from the relay. One parameter text (setting name) is read in each query. Text Command Table E.26 61h Read Parameter Text Command...

  • Page 469: Table E.29 61H Read Parameter Enumeration Text Query Error Messages

    Illegal Data Value (03h) Illegal Register 7Dh Encapsulated The SEL-787 uses this function to allow a Modbus master to perform control operations and another Modbus function with one query. The Device Net card Packet With Control will transmit this command periodically to achieve high-speed I/O processing Command and establish a heartbeat between the DeviceNet card and the main board.

  • Page 470: Table E.32 7Eh Nop Command

    Use the 60h, 61h, and 62h commands to retrieve parameter information, and use the 03 command to retrieve values. Modifying Relay The SEL-787 does not provide password protection. It is assumed that because the interface is a binary protocol with CRC-16 protection, the Settings Using interface is being handled by an intelligent master system.
  • Page 471 E.19 Communications Protocol User-Defined Modbus The SEL-787 Modbus Register Map defines an area of 125 contiguous addresses whose contents are defined by 125 user-settable addresses. This Data Region and feature allows you to take 125 discrete values from anywhere in the Modbus...
  • Page 472 ICW1_MAG MVRHPL RTD7 KVAR3PMX ICW1_ANG MVRHNH RTD8 KVAR3PMN IGW1_MAG MVRHNL RTD9 KVA3PMX IGW1_ANG ENRGY_S RTD10 KVA3PMN 3I2W1MAG ENRGYMN RTD11 FREQMX IAVW1MAG ENRGY_H RTD12 FREQMN IAW2_MAG ENRGY_D 796–806 RTD1MX IAW2_ANG ENRGYMO IAW1RMS RTD1MN IBW2_MAG SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 473 MV16H 1046 SC13 AI401MNL AI402H 1001 MV16L 1047 SC14 AI402MXH AI402L 1002 MV17H 1048 SC15 AI402MXL AI403H 1003 MV17L 1049 SC16 AI402MNH AI403L 1004 MV18H 1050 SC17 AI402MNL AI404H 1005 MV18L 1051 SC18 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 474: Table E.33 Modbus Register Labels For Use With Set M Command

    1168 ROW_26 1214 ROW_72 1108 EVE_MAXO 1169 ROW_27 1215 ROW_73 1109 RES_1109 1170 ROW_28 1216 ROW_74 1110–1116 1171 ROW_29 1217 ROW_75 1117 TRIP_LO 1172 ROW_30 1218 ROW_76 1118 TRIP_HI 1173 ROW_31 1219 ROW_77 SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 475: Modbus Register Map

    Whenever there is a new event, the history data registers update automatically with new event data. If specific event number data have been retrieved using a write to the EVENT LOG SEL register, the event data registers stay frozen with that specific event history. These registers return to the free running latest event history data mode when a zero is written to the event selection register from a prior nonzero selection.
  • Page 476 287 (R/W) WDG2 L-L INT KV 1000 288 (R/W) WDG2 L-L FRAC KV 0.01 289 (R/W) NEUT1 CT RATIO 50000 290 (R/W) PHASE PT RATIO 10000 291 (R/W) PHASE PTR FRAC 0.01 292 (R/W) VNOM INT KV 1000 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 477 317 (R/W) 5TH HARM AL LVL 0.01 318 (R/W) 5TH HARM AL DLY 1200 319 (R/W) HARMONIC RESTRNT 0 = N 1 = Y 320 (R/W) HARM BLOCK 0 = N 1 = Y 321 (R) Reserved Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 478 9600 0.01 344 (R/W) NSEQ IOC DELAY 1200 345 (R/W) W1 NSEQ IOC L2EN 0 = N 1 = Y 346 (R/W) NSEQ IOC LEVEL 9600 0.01 347 (R/W) NSEQ IOC DELAY 1200 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 479 367 (R/W) CONST TIME ADDER 0.01 368 (R/W) MIN RESPONSE TIM 0.01 Winding 2 Maximum Phase Instantaneous Overcurrent (WDG2 Max Ph IOC) 369 (R/W) WDG2 IOC L1 EN 0 = N 1 = Y Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 480 6 = C2 2 = U3 7 = C3 3 = U4 8 = C4 4 = U5 9 = C5 396 (R/W) PHASE TOC TDIAL 1500 0.01 397 (R/W) EM RESET DELAY SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 481 0 = N 1 = Y 418 (R/W) NEUT IOC LEVEL 9600 0.01 419 (R/W) NEUT IOC DELAY 0.01 Neutral Time-Overcurrent 420 (R/W) NEUT TOC LVL EN 0 = N 1 = Y Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 482 2 = OTH 442 (R/W) RTD3 TYPE 0 = PT100 1 = NI100 2 = NI120 3 = CU10 443 (R/W) RTD3 TRIP LEVEL degC 0 = Off 444 (R/W) RTD3 WARN LEVEL degC SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 483 0 = Off 460 (R/W) RTD7 WARN LEVEL degC 0 = Off 461 (R/W) RTD8 LOCATION 0 = OFF 1 = AMB 2 = OTH 462 (R/W) RTD8 TYPE 0 = PT100 1 = NI100 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 484 0 = PT100 1 = NI100 2 = NI120 3 = CU10 479 (R/W) RTD12 TRIP LEVEL degC 0 = Off 480 (R/W) RTD12 WARN LEVEL degC 0 = Off 481–486 (R) Reserved 581–586 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 485 517 (R/W) LVL1 V/HZ PICKUP 518 (R/W) LVL1 TIME DLY 40000 0.01 519 (R/W) LVL2 CURVE SHAPE 0 = OFF 1 = DD 2 = ID 3 = I 4 = U 520 (R/W) LVL2 INV-TM PU Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 486 541 (R/W) FREQ2 TRIP LEVEL 542 (R/W) FREQ2 TRIP DELAY 2400 543 (R/W) FREQ3 TRIP ENABL 0 = N 1 = Y 544 (R/W) FREQ3 TRIP LEVEL 545 (R/W) FREQ3 TRIP DELAY 2400 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 487 4000 566 (R/W) CLOSE1 FAIL DLY 4000 567 (R/W) CLOSE2 FAIL DLY 4000 568–575 (R) Reserved 668–675 Enables OGIC 576 (R/W) SEL LATCHES OGIC 577 (R/W) SV/TIMERS 578 (R/W) SEL COUNTERS OGIC 579 (R/W) MATH VARIABLES 580–584 (R) Reserved 680–684...
  • Page 488 Bits 10–Bit 15 = Reserved 626–635 (R) Reserved 726–735 Date/Time Set 636 (R/W) SET SEC 5999 0.01 637 (R/W) SET MIN 638 (R/W) SET HOUR 639 (R/W) SET DAY 640 (R/W) SET MONTH SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 489 0 = ENABLED 1 = DISABLED 676–683 (R) Reserved 776–783 Current Data 684 (R) IAW1 CURRENT 65535 685 (R) IAW1 ANGLE -1800 1800 686 (R) IBW1 CURRENT 65535 687 (R) IBW1 ANGLE -1800 1800 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 490 725 (R) NEG-SEQ VOLT 3V2 65535 Power Data 726 (R) REAL POWER -32768 32767 727 (R) REACTIVE POWER kVAR -32768 32767 728 (R) APPARENT POWER -32768 32767 729 (R) POWER FACTOR -100 0.01 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 491 PEAKD RST DAT-yy 2000 9999 2000 Harmonic Data 770 (R) IAW1 THD 65535 771 (R) IBW1 THD 65535 772 (R) ICW1 THD 65535 773 (R) IAW2 THD 65535 774 (R) IBW2 THD 65535 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 492 IN RMS 65535 814 (R) VA RMS 65535 815 (R) VB RMS 65535 816 (R) VC RMS 65535 817 (R) VAB RMS 65535 818 (R) VBC RMS 65535 819 (R) VCA RMS 65535 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 493 RTD2 MIN degC -32768 32767 856 (R) RTD3 MAX degC -32768 32767 857 (R) RTD3 MIN degC -32768 32767 858 (R) RTD4 MAX degC -32768 32767 859 (R) RTD4 MIN degC -32768 32767 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 494 AI401 MN–LO -32768 32767 0.001 896 (R) AI402 MX–HI -32768 32767 0.001 897 (R) AI402 MX–LO -32768 32767 0.001 898 (R) AI402 MN–HI -32768 32767 0.001 899 (R) AI402 MN–LO -32768 32767 0.001 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 495 AI302–LO -32768 32767 0.001 1043 944 (R) AI303–HI -32768 32767 0.001 1044 945 (R) AI303–LO -32768 32767 0.001 1045 946 (R) AI304–HI -32768 32767 0.001 1046 947 (R) AI304–LO -32768 32767 0.001 1047 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 496 MV12–HI -32768 32767 0.01 1092 993 (R) MV12–LO -32768 32767 0.01 1093 994 (R) MV13–HI -32768 32767 0.01 1094 995 (R) MV13–LO -32768 32767 0.01 1095 996 (R) MV14–HI -32768 32767 0.01 1096 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 497 0.01 1132 1033 (R) MV32–LO -32768 32767 0.01 1133 Device Counters 1034 (R) COUNTER SC01 65000 1134 • • • • • • 1065 (R) COUNTER SC32 65000 1165 1066–1081 (R) Reserved 1166–1181 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 498 Scale Parameter Address Name / Enums Units Factor Numbers Historical Data 1082 (R) NO. EVENT LOGS 1182 1083 (R/W) EVENT LOG SEL 1183 1084 (R) EVENT TIME ss 5999 0.01 1184 1085 (R) EVENT TIME mm 1185 1086 (R) EVENT TIME hh...
  • Page 499 Bit 11 = AI HI/LO ALARM Bit 12 = RESERVED Bit 13 = HALARM Bit 14 = SALARM Bit 15 = WARNING 1120 (R) WARN STATUS HI 65535 1220 Bit 0–Bit 15 = RESERVED 1121–1125 (R) Reserved 1221–1225 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 500 50N12T Bit 7 = 50N11T 1146 (R) ROW 4 1246 Bit 0 = 51N1T Bit 1 = 51Q2T Bit 2 = 51Q1T Bit 3 = 51G2T Bit 4 = 51G1T Bit 5 = SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 501 1253 50Q22P Bit 0 = 50Q21P Bit 1 = 50G22P Bit 2 = 50G21P Bit 3 = 50Q12P Bit 4 = 50Q11P Bit 5 = 50G12P Bit 6 = 50G11P Bit 7 = Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 502 Bit 4 = OTHTRIP Bit 5 = OTHALRM Bit 6 = AMBTRIP AMBALRM Bit 7 = 1161 (R) ROW 19 1261 OUT304 Bit 0 = OUT303 Bit 1 = OUT302 Bit 2 = SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 503 ROW 25 1267 Bit 0 = FAULT Bit 1 = IRIGOK Bit 2 = TSOK Bit 3 = WARNING Bit 4 = SALARM Bit 5 = PMDOK Bit 6 = LINKBOK Bit 7 =LINKAOK Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 504 0 = N 1 = Y 1279 (RW) W1 PH-B TOC LVL 1600 0.01 1379 1280 (RW) W1 PHB TOC CURVE 1380 0 = U1 5 = C1 1 = U2 6 = C2 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 505 5 = C1 1 = U2 6 = C2 2 = U3 7 = C3 3 = U4 8 = C4 4 = U5 9 = C5 1302 W2 PHB TOC TDIAL 1500 0.01 1402 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 506 Bit 2 = IN1/IN101 Status Bit 3 = IN2/IN102 Status Bit 4 = IN3/IN401 Status Bit 5 = IN4/IN402 Status Bit6 = IN5/IN403 Status Bit 7 = Reserved Bit 8 = AUX1/OUT101 Status SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 507 Bit 4 = IN23/IN505 Status Bit 5 = IN24/IN506 Status Bit 6 = IN25/IN507 Status Bit 7 = IN26/IN508 Status Bit 8–Bit 15 = Reserved PAR GROUP INDICES 3000H (R) Reserved 3001H (R) USER MAP REG Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 508 3024H (R) TRIP/CLOSE LOGIC 3025H (R) ENABLES OGIC 3026H (R) OUTPUT CONTACTS 3027H (R) EVENT REPORT SET 3028H (R) FRONT PANEL SET 3029H (R) RESET SETTINGS 302AH (R) DATE/TIME SET 302BH (R) DEVICE STATUS SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 509 3046H (R) WDG2 PER PH TOC 1292 1312 1292 PRODUCT INFORMATION 4000H (R) VENDOR CODE 65535 865 = SEL 4001H (R) PRODDUCT CODE 65535 4002H (R/W) ASA NUMBER LOW 65535 4003H (R/W) ASA NUMBER HIGH 65535 4004H (R) FIRMWARE REVISION...
  • Page 510 Read this register only when the PT connection is WYE. The HI and LO registers are high and low 16-bits, respectively. They provide 32-bit information by combining to form a 32-bit register and then applying sign and scaling attributes. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 511: Appendix F: Iec 61850 Communications

    IEC 61850: ➤ SCADA—Connect as many as six simultaneous IEC 61850 MMS client sessions. The SEL-787 also supports as many as six buffered and six unbuffered report control blocks. See Table F.14, the CON Logical Device table for Logical Node mapping that enables SCADA control via a Manufacturing Messaging Specification (MMS) browser.

  • Page 512: Introduction To Iec 61850

    The IEC 61850 document set, available directly from the IEC at http://www.iec.ch, contains information necessary for successful implementation of this protocol. SEL strongly recommends that anyone involved with the design, installation, configuration, or maintenance of IEC 61850 systems be familiar with the appropriate sections of these documents.

  • Page 513: Iec 61850 Operation

    IEC 61850 Operation Ethernet Networking IEC 61850 and Ethernet networking are available as options in the SEL-787. In addition to IEC 61850, the Ethernet port provides support protocols and data exchange, including FTP and Telnet. Access the SEL-787 Port 1 settings to configure all of the Ethernet settings, including IEC 61850 enable settings.

  • Page 514: Table F.2 Example Iec 61850 Descriptor Components

    LNs. The SEL-787 Logical Nodes are grouped under Logical Devices for organization based on function. See Table F.3 for descriptions of the Logical Devices in an SEL-787. See Logical Nodes for a description of the LNs that make up these Logical Devices.
  • Page 515 This information can be useful when searching through device data with to issue an STA C command or cycle MMS browsers. If you intend to use any SEL-787 virtual bits for controls, you power to the device to clear the device bits if the configuration has changed.

  • Page 516: Table F.4 Buffered Report Control Block Client Access

    IEC 61850 Communications IEC 61850 Operation Figure F.1 SEL-787 Predefined Reports There are 12 report control blocks, six buffered reports and six unbuffered. For each report control block, there can be just one client association, i.e., only one client can be associated to a report control block (BRCB or URCB) at any given time.

  • Page 517: Table F.5 Unbuffered Report Control Block Client Access

    URCB at a time, resulting in multiple client associations for that URCB. Once enabled, each client has independent access to a copy of that URCB. The Resv attribute is writable, however, the SEL-787 does not support reservations. Writing any field of the URCB causes the client to obtain their own copy of the URCB-in essence, acquiring a reservation.

  • Page 518: Figure F.2 Sel-787 Datasets

    Logical Nodes for the logical node tables that list the available data attributes for each logical node and the Relay Word bit mapping for these data attributes. The datasets listed in Figure F.2 are the defaults for an SEL-787 device. Datasets BRDSet01–BRDSet06 and URDSet01–URDSet06 are preconfigured with common FCDAs to be used for reporting.

  • Page 519: Figure F.3 Goose Quality

    (e.g., an internal self-test failure), the SEL-787 will set the Validity attribute to invalid and the Failure attribute to TRUE. Note that the SEL-787 does not set any of the other quality attributes. These attributes will always indicate FALSE (0). See the...
  • Page 520 Incoming GOOSE messages are processed in accordance with the following constraints: ➤ The user can configure the SEL-787 to subscribe to as many as 16 incoming GOOSE messages. The SEL-787 will recognize incoming GOOSE messages as valid based on the following content. Any GOOSE message that fails these checks shall be rejected.

  • Page 521: Iec 61850 Configuration

    Architect. ERATOR Architect Architect Software enables users to design and ERATOR ERATOR commission IEC 61850 substations containing SEL IEDs. Users can use Architect to do the following: ERATOR ➤ Organize and configure all SEL IEDs in a substation project. ➤...
  • Page 522 CID file for a device. Architect has the capability to read other manufacturers’ ICD ERATOR and CID files, enabling the user to map the data seamlessly into SEL IED logic. See the Architect online help for more information. ERATOR...

  • Page 523: Logical Node Extensions

    The name shall be composed of the class name, the LN-Prefix, and the LN-Instance-ID according to IEC 61850-7-2. Common Logical Node Information LN shall inherit all Mandatory Data from Common Logical Node Class. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 524: Table F.10 Compatible Logical Nodes With Extensions

    Average Voltage MaxVA Maximum apparent power MinVA Minimum apparent power MaxW Maximum real power MinW Minimum real power MaxVAr Maximum reactive power MinVAr Minimum reactive power MaxA Maximum Phase Currents MinA Minimum Phase Currents SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 525: Logical Nodes

    Logical Nodes The following tables, Table F.12 through Table F.16, show the Logical Nodes (LNs) supported in the SEL-787 and the associated Relay Word bits or measured quantities. Table F.12 shows the LN associated with protection elements defined as Logical Device PRO.
  • Page 526 51G2T Residual ground time-overcurrent element trip–Winding 2 G2PTOC5 Str.general 51G2P Residual ground time-overcurrent element pickup–Winding 2 G2PTOC5 Str.dirGeneral unknown Direction undefined HB24PHAR1 Str.phsA 2_4HB1 Second or fourth-harmonic block asserted for Differential Element 1 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 527 Level 1 C-phase instantaneous overcurrent element pickup–Winding 1 P11CPIOC21 Str.dirGeneral unknown Direction undefined P11PIOC1 Op.general 50P11T Level 1 phase instantaneous overcurrent element trip–Winding 1 P11PIOC1 Str.general 50P11P Level 1 phase instantaneous overcurrent element pickup–Winding 1 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 528 Level 1 C-phase instantaneous overcurrent element trip–Winding 2 P21CPIOC24 Str.general 50P21CP Level 1 C-phase instantaneous overcurrent element pickup–Winding 2 P21CPIOC24 Str.dirGeneral unknown Direction undefined P21PIOC5 Op.general 50P21T Level 1 phase instantaneous overcurrent element trip–Winding 2 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 529 Str.general 3PWR1P 3-Phase Power Element 1 pickup PWR1PDUP1 Str.dirGeneral unknown Direction undefined PWR2PDOP2 Op.general 3PWR2T 3-Phase Power Element 2 trip PWR2PDOP2 Str.general 3PWR2P 3-Phase Power Element 2 pickup PWR2PDOP2 Str.dirGeneral unknown Direction undefined Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 530 Restricted earth fault inverse-time O/C element timed-out REF1RPDIF6 Op.general REF1R REF element reverse (external) fault declaration TRIP1PTRC1 Tr.general TRIP1 Trip1 logic output TRIP2PTRC2 Tr.general TRIP2 Trip2 logic output TRIP3PTRC3 Tr.general TRIPXFMR TripXFMR logic output SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 531: Table F.13 Logical Device: Met (Metering)

    METMDST1 DmdA.res.instCVal.mag.f Residual current demand METMDST1 DmdVArh.instMag.f MVARHP Reactive energy, 3-phase positive METMDST1 DmdWh.instMag.f MWHP Real energy, 3-phase positive METMDST1 PkDmdA.nseq.instCVal.mag.f 3I2PD Negative-sequence current peak demand METMDST1 PkDmdA.phsA.instCVal.mag.f IAPD Phase-A current peak demand Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 532 Winding2 current, C-phase, angle METMMXU1 A2.phsC.instCVal.mag.f ICW2_MAG Winding2 current, C-phase, magnitude METMMXU1 A2.res.instCVal.ang.f IGW2_ANG Winding2 current, calculated-residual, angle METMMXU1 A2.res.instCVal.mag.f IGW2_MAG Winding2 current, calculated-residual, magnitude METMMXU1 Hz.instMag.f FREQ Frequency METMMXU1 PhV.phsA.instCVal.ang.f VA_ANG Voltage, A-phase-to-neutral, angle SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 533 Voltage, positive-sequence, magnitude METMSQI1 SeqV.c3.instCVal.ang.f VG_ANG Voltage, zero-sequence, angle METMSQI1 SeqV.c3.instCVal.mag.f VG_MAG Voltage, zero-sequence, magnitude METMSTA1 AvAmps01.instMag.f IAVW1MAG Winding1 average current, magnitude METMSTA1 AvAmps02.instMag.f IAVW2MAG Winding2 average current, magnitude METMSTA1 AvVolts.instMag.f VAVE_MAG Average voltage, magnitude Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 534 Apparent power magnitude, 3-phase, minimum METMSTA1 MinVAr.instMag.f KVAR3PMN Reactive power magnitude, 3-phase, minimum METMSTA1 MinW.instMag.f KW3PMN Real power magnitude, 3-phase, minimum RMS1MMXU2 A1.phsA.instCVal.mag.f IAW1RMS Winding1 RMS current, A-phase, magnitude RMS1MMXU2 A1.phsB.instCVal.mag.f IBW1RMS Winding1 RMS current, B-phase, magnitude SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 535: Table F.14 Logical Device: Con (Remote Control)

    RB01–RB08 Remote Bits RB01–RB08 SPCSO08.stVal SPCSO08.Oper.ctlVal RBGGIO2 SPCSO09.stVal– SPCSO09.Oper.ctlVal– RB09–RB16 Remote Bits RB09–RB16 SPCSO16.stVal SPCSO16.Oper.ctlVal RBGGIO3 SPCSO17.stVal– SPCSO17.Oper.ctlVal– RB17–RB24 Remote Bits RB17–RB24 SPCSO24.stVal SPCSO24.Oper.ctlVal RBGGIO4 SPCSO25.stVal– SPCSO25.Oper.ctlVal– RB25–RB32 Remote Bits RB25–RB32 SPCSO32.stVal SPCSO32.Oper.ctlVal Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 536: Table F.15 Logical Device: Ann (Annunciation)

    Time synchronization OK MISCGGIO27 Ind10.stVal Daylight-Saving Time active MISCGGIO27 Ind11.stVal LINKA Asserted when a valid link is detected on Port 1A MISCGGIO27 Ind12.stVal LINKB Asserted when a valid link is detected on Port 1B SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 537 Pushbutton PB4A LED PBLEDGGIO7 Ind08.stVal PB4B_LED Pushbutton PB4B LED PROGGIO24 Ind01.stVal REMTRIP Remote trip PROGGIO24 Ind02.stVal ULTRIP1 Unlatch (auto reset) trip from SEL equation OGIC PROGGIO24 Ind03.stVal ULTRIP2 Unlatch (auto reset) trip from SEL equation OGIC PROGGIO24 Ind04.stVal ULTRXFMR Unlatch (auto reset) trip from SEL...

  • Page 538: Table F.16 Logical Device: Cfg (Configuration)

    Virtual bits (VB001 to VB128) Table F.16 Logical Device: CFG (Configuration) Logical Node Attribute Data Source Comment Functional Constraint = DC DevIDLPHD1 PhyNam.model PARTNO Part number DevIDLPHD1 PhyNam.serNum SER_NUM Serial number LLN0 NamPlt.swRev Firmware revision SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 539: Protocol Implementation Conformance Statement

    The Manufacturing Messaging Specification (MMS) stack provides the basis for many IEC 61850 Protocol services. Table F.19 defines the service support requirement and restrictions of the MMS services in the SEL-700 series products supporting IEC 61850. Generally, only those services whose implementation is not mandatory are shown.
  • Page 540 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 541 ReconfigureProgramInvocation Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 542: Table F.20 Mms Parameter Cbb

    Table F.21 Alternate Access Selection Conformance Statement Alternate Access Selection Client-CR Supported Server-CR Supported accessSelection component index indexRange allElements alternateAccess selectAccess component index indexRange allElements Table F.22 VariableAccessSpecification Conformance Statement VariableAccessSpecification Client-CR Supported Server-CR Supported listOfVariable variableSpecification alternateAccess variableListName SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 543: Table F.23 Variablespecification Conformance Statement

    Table F.25 GetVariableAccessAttributes Conformance Statement GetVariableAccessAttributes Client-CR Supported Server-CR Supported Request name address Response mmsDeletable address typeSpecification Table F.26 DefineNamedVariableList Conformance Statement DefineVariableAccessAttributes Client-CR Supported Server-CR Supported Request variableListName listOfVariable variableSpecification alternateAccess Response Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 544: Table F.27 Getnamedvariablelistattributes Conformance Statement

    Server-CR Supported Request Scope listOfVariableListName domainName Response numberMatched numberDeleted DeleteNamedVariableList-Error GOOSE Services Table F.29 GOOSE Conformance Conformance Subscriber Publisher Value/Comment Statement GOOSE Services SendGOOSEMessage GetGoReference GetGOOSEElementNumber GetGoCBValues SetGoCBValues GSENotSupported GOOSE Control Block (GoCB) SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 545: Acsi Conformance Statements

    IEC 61850 Communications F.35 ACSI Conformance Statements ACSI Conformance Statements Table F.30 ACSI Basic Conformance Statement Client/Subscriber Server/Publisher SEL-787 Support Client-Server Roles Server side (of Two-Party Application-Association) Client side (of Two-Party Application-Association) SCMS Supported SCSM: IEC 61850-8-1 used SCSM: IEC 61850-9-1 used...
  • Page 546 F.36 IEC 61850 Communications ACSI Conformance Statements Table F.31 ACSI Models Conformance Statement (Sheet 2 of 2) Client/Subscriber Server/Publisher SEL-787 Support M7-9 IntgPd M7-10 Unbuffered report control M8-1 sequence-number M8-2 report-time-stamp M8-3 reason-for-inclusion M8-4 data-set-name M8-5 data-reference M8-6 BufTm M8-7...

  • Page 547: Table F.32 Acsi Services Conformance Statement

    IEC 61850 Communications F.37 ACSI Conformance Statements Table F.32 ACSI Services Conformance Statement (Sheet 1 of 3) Client/ Service/ Services AA: TP/MC SEL-787 Support Subscriber Publisher Server (Clause 6) ServerDirectory Application Association (Clause 7) Associate Abort Release Logical Device (Clause 8)
  • Page 548 F.38 IEC 61850 Communications ACSI Conformance Statements Table F.32 ACSI Services Conformance Statement (Sheet 2 of 3) Client/ Service/ Services AA: TP/MC SEL-787 Support Subscriber Publisher Unbuffered Report Control Block (URCB) Report S27-1 data-change (dchg) S27-2 qchg-change (qchg) S27-3 data-update (dupd)
  • Page 549 IEC 61850 Communications F.39 ACSI Conformance Statements Table F.32 ACSI Services Conformance Statement (Sheet 3 of 3) Client/ Service/ Services AA: TP/MC SEL-787 Support Subscriber Publisher Unicast SVC SendUSVMessage GetUSVCBValues SetUSVCBValues Control (Clause 16.4.8) Select SelectWithValue Cancel Operate Command-Termination TimeActivated-Operate...
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  • Page 551: Appendix G: Devicenet Communications

    You are strongly advised to change the BLKMBSET (BLOCK MODBUS SET) := ALL if you do not want the PLC (Programmable Logic Controller) or DCS (Distributed Control System) to send the settings to the SEL-787 relay. There is a strong possibility that under special conditions like a reboot, the PLC/DCS will send default settings to the relay, overwriting the existing settings.

  • Page 552: Devicenet Card

    DeviceNet Card DeviceNet Card The DeviceNet Card is an optional accessory that enables connection of the SEL-787 to the DeviceNet automation network. The card (see Figure G.1) occupies the communications expansion Slot C in the relay. Node Address Switch: Rotary switch...

  • Page 553: Electronic Data Sheet

    Table E.34. The parameter numbers are offset by a count of 100 from the register numbers. The EDS file for the SEL-787, SEL-xxxRxxx.EDS, is located on the SEL-787 Product Literature CD. It can also be downloaded from the SEL website at www.selinc.com.
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  • Page 555: Appendix H Synchrophasors

    When synchrophasor measurement is enabled, the SEL-787 creates the synchrophasor data set at a user-defined rate. Synchrophasor data are available in ASCII format over a serial port set to PROTO = SEL. See View Synchrophasors Using the MET PM Command on page H.10.

  • Page 556: Synchrophasor Measurement

    10:00:00:016667 Figure H.1 Phase Reference The TSOK Relay Word bit asserts when the SEL-787 has determined that the IRIG-B time source has sufficient accuracy and the synchrophasor data meets the specified accuracy. Synchrophasors are still measured if the time source threshold is not met, as indicated by Relay Word bit TSOK = logical 0.

  • Page 557: Figure H.2 Waveform At Relay Terminals May Have A Phase Shift

    In other words, a power system has a nominal frequency of either 50 or 60 Hz, but on closer examination, it is usually running a little faster or slower than nominal. Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 558: Settings For Synchrophasors

    It is possible to set EPMU := Y without using any serial ports for synchrophasor protocols. For example, the serial port MET PM ASCII command can still be used. Table H.1 PMU Settings in the SEL-787 for C37.118 Protocol in Global Settings Setting...

  • Page 559: Table H.2 Sel-787 Serial Port Settings For Synchrophasors

    Global setting EPMU := N. However, in this situation, the serial port will not respond to any commands or requests. Either enable synchrophasors by making the Table H.1 settings, or change the port PROTO setting to SEL. ® If you use a computer terminal session or...
  • Page 560 Table H.3 describes the order of synchrophasors inside the data packet. The IW1COMP and IW2COMP settings allow correction for any steady-state phase errors (from the current transformers or wiring characteristics). See Synchrophasor Measurement on page H.2 for details on these settings. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 561: Table H.3 Synchrophasor Order In Data Stream (Voltages And Currents)

    Table H.4 User-Defined Analog Values Selected by the NUMANA Setting Total Number of Bytes NUMANA Setting Analog Quantities Sent Used for Analog Values None MV29 Above, plus MV30 Above, plus MV31 Above, plus MV32 Date Code 20150130 Instruction Manual SEL-787 Relay...

  • Page 562: Table H.5 User-Defined Digital Status Words Selected By The Numdsw Setting

    Global OGIC settings class. The SEL-787 evaluates these equations and places the results in Relay Word bits with the same names: TREA1–TREA4, and PMTRIG. The trigger reason equations represent the Trigger Reason bits in the STAT...

  • Page 563: Synchrophasor Relay Word Bits

    IRIGC := C37.118 will extract bit extensions and correct synchrophasor time accordingly Synchrophasor Relay Word Bits Table H.7 and Table H.8 list the SEL-787 Relay Word bits that are related to synchrophasor measurement. The Synchrophasor Trigger Relay Word bits in Table H.7 follow the state of...

  • Page 564: View Synchrophasors Using The Met Pm Command

    ERATOR QuickSet, and has a similar format to Figure H.4. The MET PM time command can be used to direct the SEL-787 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 H.4 occurring just after 14:14:12, with the time stamp 14:14:12.000.

  • Page 565: C37.118 Synchrophasor Protocol

    Global setting NUMANA, and 0 or 16 digital status values, as controlled by Global setting NUMDSW. The SEL-787 always includes the results of four synchrophasor trigger reason equations TREA1, TREA2, TREA3, and TREA4, and the trigger OGIC equation result PMTRIG, in the synchrophasor message.

  • Page 566: Table H.9 Size Of A C37.118 Synchrophasor Message

    Words Total (Minimum and Maximum) Table H.10 lists the baud settings available on any SEL-787 serial port (setting SPEED), and the maximum message size that can fit within the port bandwidth. Blank entries indicate bandwidths of less than 20 bytes.
  • Page 567 H.13 C37.118 Synchrophasor Protocol Protocol Operation The SEL-787 will only transmit synchrophasor messages over serial ports that have setting PROTO := PMU. The connected device will typically be a synchrophasor processor, such as the SEL-3306. The synchrophasor processor controls the PMU functions of the SEL-787, with IEEE C37.118 commands,...
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  • Page 569: Appendix I: Mirrored Bits Communications

    In the SEL-787, the M transmission rate is a function of both the IRRORED baud rate and the power system cycle. At baud rates below 9600, the SEL-787 Transmission transmits M as fast as possible for the given baud. At rates at...
  • Page 570 RMBnA and RMBnB relay element bits. Message Decoding Set the RX_ID of the local SEL-787 to match the TX_ID of the remote SEL-787. The SEL-787 provides indication of the status of each M IRRORED...
  • Page 571 Because the SEL-787 transmits messages at approximately 1/4-cycle processing interval (9600 baud and above, see Table I.1), a counter set to two in the SEL-321 delays a received bit by another approximately 1/2 cycle. However, a security counter in the SEL-787 with a...
  • Page 572 Use the RBADPU setting to determine how long a channel error must last before the meter element RBADA is asserted. RBADA is deasserted when the channel error is corrected. RBADPU is accurate to ±1 second. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 573: Settings

    CBADPU Channel Unavailability to Set CBAD (1–10000 ppm) 1000 RXDFLT 8 char string of 1s, 0s, or Xs XXXXXXXX RMB1PU RMB1 Pickup Debounce Messages (1–8 messages) RMB1DO RMB1 Dropout Debounce Messages (1–8 messages) Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 574 RMB6 Dropout Debounce Messages (1–8 messages) RMB7PU RMB7 Pickup Debounce Messages (1–8 messages) RMB7DO RMB7 Dropout Debounce Messages (1–8 messages) RMB8PU RMB8 Pickup Debounce Messages (1–8 messages) RMB8DO RMB8 Dropout Debounce Messages (1–8 messages) SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 575: Table J.1 Sel-787 Relay Word Bits

    Instruction Manual Overview The protection and control element results are represented by Relay Word bits in the SEL-787 Transformer Protection Relay. Each Relay Word bit has a label name and can be in either of the following states: ➤ 1 (logical 1) ➤...

  • Page 576: Appendix J: Relay Word Bits Overview

    Relay Word Bits Overview Table J.1 SEL-787 Relay Word Bits (Sheet 2 of 4) Relay Word Bits Bit/ 2_4HB1 2_4HB2 2_4HB3 2_4HBL 5HB1 5HB2 5HB3 5HBL 87BL1 87BL2 87BL3 87HB 87HR1 87HR2 87HR3 87HR 87AP 27P1 27P2 59P1 59P2 3PWR1P...
  • Page 577 Relay Word Bits Overview Table J.1 SEL-787 Relay Word Bits (Sheet 3 of 4) Relay Word Bits Bit/ SV17T SV18T SV19T SV20T SV21T SV22T SV23T SV24T SV25 SV26 SV27 SV28 SV29 SV30 SV31 SV32 SV25T SV26T SV27T SV28T SV29T SV30T...

  • Page 578: Definitions

    TUTC1 TUTC2 TUTC4 TUTC8 TUTCH Reserved for future use. Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 1 of 10) Definition Reserved — 2_4HB1 Second or Fourth Harmonic block asserted for differential element 1 2_4HB2 Second or Fourth Harmonic block asserted for differential element 2...
  • Page 579 Relay Word Bits Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 2 of 10) Definition 3PWR2T Three phase power element 2 trip 50G11P Level 1 residual ground instantaneous overcurrent element pickup—Winding 1 50G11T Level 1 residual ground instantaneous overcurrent element trip—Winding 1 50G12P Level 2 residual ground instantaneous overcurrent element pickup —Winding 1...
  • Page 580 Relay Word Bits Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 3 of 10) Definition 50P22T Level 2 maximum phase instantaneous overcurrent element trip—Winding 2 50P23P Level 3 maximum phase instantaneous overcurrent element pickup—Winding 2 50P23T Level 3 maximum phase instantaneous overcurrent element trip—Winding 2 50P24P Level 4 maximum phase instantaneous overcurrent element pickup—Winding 2...
  • Page 581 Relay Word Bits Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 4 of 10) Definition 51P2AR A-phase time-overcurrent element reset—Winding 2 51P2AT A-phase time-overcurrent element trip—Winding 2 51P2BP B-phase time-overcurrent element pickup—Winding 2 51P2BR B-phase time-overcurrent element reset—Winding 2 51P2BT C-phase time-overcurrent element trip—Winding 2...
  • Page 582 Relay Word Bits Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 5 of 10) Definition 87HR Harmonic restrained element (HR1 OR HR2 OR HR3) 87HR1 Harmonic restrained element 1 87HR2 Harmonic restrained element 2 87HR3 Harmonic restrained element 3...
  • Page 583 Relay Word Bits Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 6 of 10) Definition Breaker 2 Close condition failure on CFGFLT Asserts on failed settings interdependency check during Modbus setting change Close SEL control equation CL1...
  • Page 584 J.10 Relay Word Bits Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 7 of 10) Definition LINKB Assert if Ethernet Port B detects link LINKFAIL Failure of active Ethernet port link Loss-of-Potential LPSEC Direction of the upcoming leap second. During the time that LPSECP is asserted, if LPSEC is asserted, the upcoming leap second is deleted;...
  • Page 585 Relay Word Bits J.11 Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 8 of 10) Definition PB3B_LED control equation: drives LED PB3B OGIC PB4A_LED control equation: drives LED PB4A OGIC PB4B_LED control equation: drives LED PB4B OGIC...
  • Page 586 J.12 Relay Word Bits Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 9 of 10) Definition RTDT Asserts when any RTD trip (RTD_T) is asserted SALARM Software Alarms: invalid password, changing access levels, settings changes, active group...
  • Page 587 Relay Word Bits J.13 Definitions Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 10 of 10) Definition Trip SEL control equation TR2 (Also has been referred to as TRIPEQ2) OGIC TREA1 Trigger Reason Bit 1 for synchrophasors TREA2...
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  • Page 589: Appendix K Analog Quantities

    Appendix K Analog Quantities Instruction Manual The SEL-787 Transformer Protection Relay contains several analog quantities that can be used for more than one function. The actual analog quantities available depend on the part number of the relay used. Analog quantities are typically generated and used by a primary function, such as, metering and selected quantities are made available for one or more supplemental functions, for example, the load profile.

  • Page 590: Table K.1 Analog Quantities

    VA primary Power factor, magnitude 3-phase unitless FREQ Frequency V/Hz Thermal Metering RTDAMB Ambient RTD Temperature °C RTDOTHMX Other Maximum RTD Temperature °C RTD1 to RTD1 to RTD12 Temperature °C RTD12 SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 591 Winding 2 Current, C-phase, minimum magnitude A primary IGW2MN Winding 2 Current, residual, minimum magnitude A primary INMN Current, neutral, minimum magnitude A primary VABMX Voltage, A-to-B-phase, maximum magnitude V primary VBCMX Voltage, B-to-C-phase, maximum magnitude V primary Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 592 Winding 2 rms current, A-phase, magnitude A primary IBW2RMS Winding 2 rms current, B-phase, magnitude A primary ICW2RMS Winding 2 rms current, C-phase, magnitude A primary INRMS Neutral rms current, magnitude A primary SEL-787 Relay Instruction Manual Date Code 20150130...
  • Page 593 VC_THD C-phase-to-neutral voltage THD VAB_THD A-to-B-phase voltage THD VBC_THD B-to-C-phase voltage THD VCA_THD C-to-A-phase voltage THD Date/Time DATE Present date TIME Present time YEAR Year number (0000-9999) DAYY Day of Year number (1-366) Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 594 OGIC OGIC SEL Fast Message Label names for RTDAMB and RTDOTHMX are AMB and OTH, respectively. RTD open is equivalent to +32767 and RTD short is equivalent to –32768 when RTDs are monitored via LDP. See the Engineering Unit settings (e.g., AI301EU) of the respective analog input.

  • Page 595: Glossary

    To activate; to fulfill the logic or electrical requirements needed to operate a device. To apply a short-circuit or closed contact to an SEL-787 input. To set a logic condition to the true state (logical 1). To close a normally-open output contact.
  • Page 596 To deactivate; to remove the logic or electrical requirements needed to operate a device. To remove a short-circuit or closed contact from an SEL-787 input. To clear a logic condition to the false state (logical 0). To open a normally- open output contact.
  • Page 597 Fundamental Meter Type of meter data presented by the SEL-787 that includes the present values measured at the relay ac inputs. The word “Fundamental” is used to indicate that the values are Fundamental Frequency values and do not include harmonics.
  • Page 598 0. Logical 1 represents a true logic condition, picked up element, or asserted contact input or contact output. Logical 0 represents a false logic condition, dropped out element, or deasserted contact input or contact output. You can use Relay Word bits in SEL control equations to control relay OGIC tripping, event triggering, and output contacts, as well as other functions.
  • Page 599 Abbreviation for Resistance Temperature Device. An RTD is made of a metal having a precisely known resistance and temperature coefficient of resistance. The SEL-787 (and the SEL-2600 RTD Module RTD modules) can measure the resistance of the RTD, and thus, determine the temperature at the RTD location, typically embedded in the transformer and oil tank.
  • Page 600 This connection is frequently called “four-wire wye,” alluding to the three phase leads plus the neutral lead. Z-Number That portion of the relay RID string that identifies the proper ERATOR QuickSet relay driver version when creating or editing relay settings files. SEL-787 Relay Instruction Manual Date Code 20150130...

  • Page 601: Index

    ASCII Protocol PASSWORD 7.33 See Communications See SEL ASCII Protocol PING 7.34 Compressed ASCII 9.2 Automatic Messages 7.15 PULSE 7.34 See also SEL Binary Protocols Configurable Label Kit 1.3 8.13 QUIT 7.35 events 9.1 R_S 7.35 Configuration front panel 8.3 SER 7.35...

  • Page 602: Figure 4.79 Rotating Display

    See also Fast Operate; Fast Meter; HMI (SEL-5030) 3.12 Fast SER LCD 4.97 I/O Configuration 2.2 2.13 Fast Meter C.2 Display Points 4.98 See also SEL Binary Protocols IEC 61850 F.1 name, alias, set string, and clear ACSI Conformance Fast Operate – string 4.99 4.104 Statements F.35...
  • Page 603 5.2 phasor diagram 4.82 real power 5.2 Safety Information setting, PHROT 4.81 rms 5.8 Laser/LED Emitter xxiii RTD 5.5 Port Settings (SET P Command) 4.94 SEL ASCII Protocol 7.14 RTD temperatures 5.5 Date Code 20150130 Instruction Manual SEL-787 Relay...
  • Page 604 SEL Communications relay elements 10.10 DNP Map Settings (SET DNP Processor C.3 – C.10 self tests 10.11 Command) 4.110 SEL-2600 Series RTD Module 1.2 test connections 10.7 10.8 Front-Panel Set (SET F failure messages 5.5 – with SER 10.10 Command) 4.97 4.107...

  • Page 605: Sel-787 Relay Command Summary

    SEL-787 Relay Command Summary The table below lists the front serial port ASCII commands associated with particular activities. The commands are shown in uppercase letters, but they can also be entered using lowercase letters. Serial Port Command Command Description Access Level 0 Commands Go to Access Level 1.
  • Page 606 2 SEL-787 Relay Command Summary Serial Port Command Command Description EVE DIF1 n Show differential element 1 event report number n, with 1/4-cycle resolution. EVE DIF2 n Show differential element 2 event report number n, with 1/4-cycle resolution. EVE DIF3 n Show differential element 3 event report number n, with 1/4-cycle resolution.
  • Page 607 SEL-787 Relay Command Summary Serial Port Command Command Description PING x.x.x.x t Determine if Ethernet port is functioning or configured properly. x.x.x.x is the IP address and “t” is the PING interval settable from 2 to 255 seconds. Default “t” is 1 second. Press Q to stop.
  • Page 608 “R” or “r” indicates ramp mode, and t is the duration of the test in decimal minutes. Enter Access Level C. If the main board Access jumper is not in place, the relay prompts for the entry of the Access Level C password. Access Level C is reserved for SEL use only. CLO n Close circuit breaker n, where n = 1 or 2.
  • Page 609 SEL-787 Relay Command Summary The table below lists the front serial port ASCII commands associated with particular activities. The commands are shown in uppercase letters, but they can also be entered using lowercase letters. Serial Port Command Command Description Access Level 0 Commands Go to Access Level 1.
  • Page 610 2 SEL-787 Relay Command Summary Serial Port Command Command Description EVE DIF1 n Show differential element 1 event report number n, with 1/4-cycle resolution. EVE DIF2 n Show differential element 2 event report number n, with 1/4-cycle resolution. EVE DIF3 n Show differential element 3 event report number n, with 1/4-cycle resolution.
  • Page 611 SEL-787 Relay Command Summary Serial Port Command Command Description PING x.x.x.x t Determine if Ethernet port is functioning or configured properly. x.x.x.x is the IP address and “t” is the PING interval settable from 2 to 255 seconds. Default “t” is 1 second. Press Q to stop.
  • Page 612 “R” or “r” indicates ramp mode, and t is the duration of the test in decimal minutes. Enter Access Level C. If the main board Access jumper is not in place, the relay prompts for the entry of the Access Level C password. Access Level C is reserved for SEL use only. CLO n Close circuit breaker n, where n = 1 or 2.

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