Schweitzer Engineering Laboratories SEL-387E Instruction Manual
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Schweitzer Engineering Laboratories SEL-387E Instruction Manual

Current differential and voltage protection relay
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Table of Contents

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Download this manual See also: Instruction Manual
SEL-387E
CURRENT DIFFERENTIAL AND
VOLTAGE PROTECTION RELAY
INSTRUCTION MANUAL
SCHWEITZER ENGINEERING LABORATORIES
2350 NE HOPKINS COURT
PULLMAN, WA USA 99163-5603
TEL: (509) 332-1890
FAX: (509) 332-7990

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  • Page 1 SEL-387E CURRENT DIFFERENTIAL AND VOLTAGE PROTECTION RELAY INSTRUCTION MANUAL SCHWEITZER ENGINEERING LABORATORIES 2350 NE HOPKINS COURT PULLMAN, WA USA 99163-5603 TEL: (509) 332-1890 FAX: (509) 332-7990...
  • Page 2 You may not copy, alter, disassemble, or reverse-engineer the software. You may not provide the software to any third party. All brand or product names appearing in this document are the trademark or registered trademark of their respective holders. Schweitzer Engineering Laboratories, SEL , Connectorized, Job Done, SELPROFILE,...
  • Page 3 Corrected typographical errors in Section 3. œ Added information about energy metering in Section 5: Metering and Monitoring, Section 7: Serial Port Communications and Commands, SEL-387E Relay Command Summary, and Section 8: Front-Panel Interface. œ Clarified settings for Three-Phase Voltage Input and Phase Potential Connection in Section 6.
  • Page 4 Settings Sheets and Settings Sheets Example. œ Made text changes throughout Section 7: Serial Port Communications and Commands to advise the user to change default passwords to private, strong passwords at installation. Manual Change Information Date Code 20020218 SEL-387E Instruction Manual...
  • Page 5 5-9 to indicate that only one setting group change per day should be made; added note about making latch bit settings with care on page 5-12; corrected Figure 5.7: SEL-387E Relay Trip Logic (TRIP1) on ®...
  • Page 6 7-3; deleted information about cable connection SEL-PRTU to SEL-387E and added information about connection of Cable 272A between SEL-2020/2030 and SEL-387E Relay on page 7-5; added warning about changing default passwords to private passwords at relay installation on pages 7-22 and 8-10; added notes about taking care when setting the date and time on pages 7-17 and 7-32;...
  • Page 7 Revision Summary of Revisions Date œ 20000414 Made minor miscellaneous changes to Section 9: Event Reports and (continued) Sequential Events Reporting. 20000216 New Manual Release. Date Code 20020218 Manual Change Information SEL-387E Instruction Manual...
  • Page 9 Appendix D: Configuration, Fast Meter , and Fast Operate Commands Appendix E: Compressed ASCII Commands Appendix F: Unsolicited SER Protocol Appendix G: Distributed Network Protocol (DNP) 3.00 SECTION 12: SEL-387E RELAY COMMAND SUMMARY Date Code 20020218 Table of Contents SEL-387E Instruction Manual...

  • Page 11: Table Of Contents

    Instantaneous/Definite-Time Overcurrent Elements (Winding) .......... 1-8 Time Overcurrent Elements (Winding and Combined Current) .......... 1-9 Over-/Undervoltage Elements ....................1-9 Frequency Element ....................... 1-9 Volts/Hertz Element ......................1-10 FIGURES Figure 1.1: SEL-387E Relay Functional Overview................1-2 Date Code 20020129 Introduction and Specifications SEL-387E Instruction Manual...

  • Page 13: Introduction And Specifications

    ANUAL VERVIEW This instruction manual applies to the SEL-387E Relay. If you are unfamiliar with this relay, we suggest that you read the following sections in the outlined order. Section 1: Introduction and Specifications for an introduction, instruction manual overview, relay functional overview, and specifications.

  • Page 14: Relay Functions

    Figure 1.1: SEL-387E Relay Functional Overview Current Differential Protection The SEL-387E Relay includes independent restrained and unrestrained current differential elements. The restrained element has a dual-slope, variable-percentage restraint characteristic. Use the fifth-harmonic element to prevent relay misoperation during allowable overexcitation conditions.

  • Page 15: Restricted Earth Fault Protection

    Restricted Earth Fault Protection The SEL-387E Relay provides sensitive detection of internal ground faults via the Restricted Earth Fault (REF) protection element. The Winding 3 inputs are used for introduction of neutral CT polarizing current. Operating current is derived from the residual current calculated for the protected winding.

  • Page 16: Frequency Protection

    Frequency Protection The SEL-387E Relay provides six levels of under-/overfrequency elements. Each element can operate as either an underfrequency or as an overfrequency element, depending on its pickup setting. Should any phase voltage fall below a user-defined value, the relay disables all frequency elements, providing security against loss-of-potential conditions.

  • Page 17: General

    24 V 0.75 A L/R = 40 ms 48 V 0.50 A L/R = 40 ms 125 V 0.30 A L/R = 40 ms 250 V 0.20 A L/R = 40 ms Date Code 20020129 Introduction and Specifications SEL-387E Instruction Manual...
  • Page 18 *Radiated and Conducted Emissions: EN 55011: 1998, Class A *Conducted Radio Frequency: EN 61000-4-6: 1996, ENV 50141: 1993, 10 Vrms Radiated Radio Frequency (900 MHz with modulation): ENV 50204: 1995, 10 V/m Introduction and Specifications Date Code 20020129 SEL-387E Instruction Manual...

  • Page 19: Metering Accuracy

    Phase Currents: ±1.5% ±0.10 A and ±1.5° Sequence Currents: ±3.0% ±0.10 A and ±2.0° Differential Quantities: ±5.0% ±0.10 A 2nd and 5th Harmonic: ±5.0% ±0.10 A Current Harmonics: ±5.0% ±0.10 A Date Code 20020129 Introduction and Specifications SEL-387E Instruction Manual...

  • Page 20: Station Dc Battery Monitor

    ±3% ±0.10 A Transient: ±5% ±0.10 A Transient for 50Q: ±6% ±0.10 A 1 A Model: Steady State: ±3% ±0.02 A Transient: ±5% ±0.02 A Transient for 50Q: ±6% ±0.02 A Introduction and Specifications Date Code 20020129 SEL-387E Instruction Manual...

  • Page 21: Time Overcurrent Elements (Winding And Combined Current)

    Time Delay: 0.04–300.00 s, 0.01 s steps Timer Accuracy: ±0.1% ±0.0042 s Frequency change caused by temperature: • (0.04 • 10 ) (T–25°C) where T = temperature of relay via STATUS command Date Code 20020129 Introduction and Specifications SEL-387E Instruction Manual...

  • Page 22: Volts/Hertz Element

    Composite-Time Element: Combination of Definite-Time and Inverse-Time specifications User-Definable Curve Element Pickup Range: 100–200% Steady-State Pickup Accuracy: ±1% Pickup Time: 25 ms @ 60 Hz (Max) Reset Time Range: 0.00–400.00 s 1-10 Introduction and Specifications Date Code 20020129 SEL-387E Instruction Manual...
  • Page 23 Clock Battery ......................2-18 Additional Interface Board ....................2-19 Jumpers ........................2-19 Board Layout ......................2-19 TABLES Table 2.1: SEL-387E Relay Communication Cable Numbers............2-12 Table 2.2: SEL-387E Relay Second ALARM Contact Jumper Position ..........2-17 Date Code 20020129 Installation SEL-387E Instruction Manual...
  • Page 24 Figure 2.15: Interface Board 4 Component Layout (Conventional Terminal Block) ......2-22 Figure 2.16: Interface Board 6 Component Layout (Conventional Terminal Block) ......2-23 Figure 2.17: Interface Board 2 Component Layout (Connectorized)............. 2-24 Figure 2.18: Interface Board 6 Component Layout (Connectorized)............. 2-25 Installation Date Code 20020129 SEL-387E Instruction Manual...

  • Page 25: Relay Mounting

    OUNTING Rack Mount We offer the SEL-387E Relay in a rack-mount version that bolts easily into a standard 19-inch rack. See Figure 2.2. From the front of the relay, insert four bolts (two on each side) through the holes on the relay mounting flanges, and use nuts to secure the relay to the rack. See Figure 2.1.

  • Page 26: Dimensions And Cutout

    Dimensions and Cutout Figure 2.1: Relay Dimensions and Panel-Mount Cutout Installation Date Code 20020129 SEL-387E Instruction Manual...
  • Page 27 Figure 2.2: Front-Panel Drawings–Models 0387Ex0xxxH and 0387Ex1xxxH Date Code 20020129 Installation SEL-387E Instruction Manual...
  • Page 28 Figure 2.3: Front-Panel Drawings–Models 0387Ex0xxx3 and 0387Ex1xxx3 Installation Date Code 20020129 SEL-387E Instruction Manual...

  • Page 29: Rear-Panel Connections

    Connectorized To use the Connectorized version of the SEL-387E Relay, ask your SEL sales or customer service representative for the appropriate model option table and order wiring harness kit WA0387E0YxxxA, where x designates wire sizes and length. You can find the model option table on the SEL Web site at http://www.selinc.com.
  • Page 30 Figure 2.4: Rear Panel Drawings–Models 0387Ex0xxxxX and 0387Ex1xxxx2 Installation Date Code 20020129 SEL-387E Instruction Manual...
  • Page 31 Figure 2.5: Rear-Panel Drawings–Models 0387Ex1xxxx4 and 0387Ex1xxxx6 Date Code 20020129 Installation SEL-387E Instruction Manual...
  • Page 32 Figure 2.6: Rear-Panel Drawings–Models 0387ExYxxxx2 and 0387ExYxxxx6 Installation Date Code 20020129 SEL-387E Instruction Manual...

  • Page 33: Prewired Connectors

    Connections Frame Ground For safety and performance, ground the relay chassis at terminal GND (Z27). Connectorized relays provide a 0.250-inch-by-0.023-inch spade connector for this connection. If the tab on the Date Code 20020129 Installation SEL-387E Instruction Manual...

  • Page 34: Power Supply

    General Specifications in Section 1: Introduction and Specifications for optoisolated input ratings. There are no internal connections between inputs. ON and OFF values normally are within one volt of each other, in the indicated range. 2-10 Installation Date Code 20020129 SEL-387E Instruction Manual...

  • Page 35: Communications Port

    You can use any combination of these ports or all of them simultaneously for relay communication. For example, to connect the SEL-387E Relay Ports 2, 3, or 4 to the 9-pin male connector on a laptop computer, order cable number C234A and specify the length needed. Standard length is eight feet.

  • Page 36: Installation

    Refer to Table 2.1 for a list of cables that you can purchase from SEL for various time- synchronizing applications. The SEL-387E Relay accepts a demodulated IRIG-B format signal for synchronizing an internal clock to some external source such as the SEL-2020 or SEL-2030 Communications Processor, SEL-IDM, or satellite time clock.
  • Page 37 Figure 2.8: Example AC Connections (three-winding transformer; wye-connected voltages) Figure 2.9: Example AC Connections (three-winding transformer; open-delta-connected voltages) Date Code 20020129 Installation 2-13 SEL-387E Instruction Manual...
  • Page 38 Figure 2.10: Example AC Connections (two-winding transformer; REF with LV compensated earthing; wye-connected voltages) Figure 2.11: Example AC Connections (two-winding transformer; HV REF; wye- connected voltages) 2-14 Installation Date Code 20020129 SEL-387E Instruction Manual...

  • Page 39: Circuit Board Configuration

    4. Each circuit board corresponds to a row of rear-panel terminal blocks or connectors and is affixed to a draw-out tray. Identify which draw-out tray needs to be removed. An SEL-387E Date Code 20020129 Installation...

  • Page 40: Output Contact Jumpers

    Table 2.2 to understand the relationship between the jumper and output contact. The jumper JMP23 controls the operation of output contact OUT107. JMP23 provides the option of a second alarm output contact by changing the signal that drives output contact OUT107. 2-16 Installation Date Code 20020129 SEL-387E Instruction Manual...

  • Page 41: Password And Breaker Jumpers

    Table 2.2: SEL-387E Relay Second ALARM Contact Jumper Position JMP23 Position Output Contact OUT107 Operation Bottom Second Alarm output contact (operated by alarm logic/circuitry). (Pins 1 & 2) Relay Word bit OUT107 has no effect on output contact OUT107 when jumper JMP23 is in this position.

  • Page 42: Condition Of Acceptability For North American Product Safety Compliance

    Low-Level Analog Interface SEL designed the SEL-387E Relay main board to accept low-level analog signals as an optional testing method. Section 10: Testing and Troubleshooting contains a more detailed discussion of the patented Low-Level Test Interface; and Figure 10.1 shows the pin configuration. The SEL-RTS (Relay Test System) interfaces with the relay through a ribbon cable connection on the main board.

  • Page 43: Additional Interface Board

    Communications and Commands or Section 8: Front-Panel Interface). Additional Interface Board We offer versions of the SEL-387E Relay in a taller case size (3U) to accommodate one additional circuit board. The additional board mounts below the main board and above the analog input (transformer) board.
  • Page 44 Figure 2.13: Main Board Jumpers, Connections, and Battery Locations 2-20 Installation Date Code 20020129 SEL-387E Instruction Manual...
  • Page 45 Figure 2.14: Interface Board 2 Component Layout (Conventional Terminal Block) Date Code 20020129 Installation 2-21 SEL-387E Instruction Manual...
  • Page 46 Figure 2.15: Interface Board 4 Component Layout (Conventional Terminal Block) 2-22 Installation Date Code 20020129 SEL-387E Instruction Manual...
  • Page 47 Figure 2.16: Interface Board 6 Component Layout (Conventional Terminal Block) Date Code 20020129 Installation 2-23 SEL-387E Instruction Manual...
  • Page 48 Figure 2.17: Interface Board 2 Component Layout (Connectorized) 2-24 Installation Date Code 20020129 SEL-387E Instruction Manual...
  • Page 49 Figure 2.18: Interface Board 6 Component Layout (Connectorized) Date Code 20020129 Installation 2-25 SEL-387E Instruction Manual...

  • Page 51: Table Of Contents

    Winding Line-to-Line Voltages .................. 3-21 Current TAP........................ 3-21 Restrained Element Operating Current Pickup............3-21 Restraint Slope Percentage ..................3-22 Unrestrained Element Current Pickup ................ 3-22 Date Code 20020129 Differential, Restricted Earth Fault, Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 52 Second-Harmonic Blocking..................3-23 Fourth-Harmonic Blocking..................3-23 Fifth-Harmonic Blocking.................... 3-23 Independent Harmonic Blocking Element (IHBL) ............ 3-23 Example of Setting the SEL-387E Relay for a Three-Winding Transformer..... 3-24 Application Guidelines ....................... 3-26 CT Arrangements......................3-26 CT Sizing ........................3-26 CT Ratio Selection for a Multiwinding Transformer..........3-26 Restricted Earth Fault Element....................
  • Page 53 When 24CCS = I:....................3-65 When 24CCS = U: ....................3-66 When 24CCS = DD, ID, I, or U:................. 3-66 Volts/Hertz Setting Reference Information ................ 3-67 Date Code 20020129 Differential, Restricted Earth Fault, Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 54 Figure 3.41: Volts/Hertz Inverse-Time Characteristic, 24IC = 0.5............3-67 Figure 3.42: Volts/Hertz Inverse-Time Characteristic, 24IC = 1............3-68 Figure 3.43: Volts/Hertz Inverse-Time Characteristics, 24IC = 2 ............3-69 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 55: Differential, Restricted Earth Fault, Overcurrent, Voltage, And Frequency Elements

    Characteristic Operating The SEL-387E Relay 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 currents. Figure 3.1 shows the relay characteristic. You can set the characteristic as either a single-slope, percentage differential characteristic or as a dual-slope, variable-percentage differential characteristic.
  • Page 56 Winding 1. The dc, fourth-harmonic, and fifth-harmonic compensated currents use similar names. The I1 compensated currents are used with differential element 87-1, I2 with element 87-2, and I3 with element 87-3. Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 57 For a through-current condition, this will calculate to about (| 1 | + | –1 |) / 2 = 2 / 2 = 1, at rated load. Date Code 20020129 Differential, Restricted Earth Fault, Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 58 1. Comparison of IOPn with the O87P setting determines the second AND input. If IOPn is greater than O87P, Relay Word bit 87On asserts. The AND gate Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 59: Harmonic Restraint

    Slope 1, i.e., a straight line through the origin. The general equation for a line is: [ ‡ More specifically, in the SEL-387E Relay: ‡  Because the line starts at the origin, the value of c is normally zero. The sum of the second- and fourth-harmonic currents now forms the constant c in the equation, raising the relay characteristic proportionally to the harmonic values.

  • Page 60: Common (Cross) Or Independent Blocking

    Figure 3.7. The blocking prevents improper tripping during transformer inrush or allowable overexcitation conditions. Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 61: Dc Ratio Blocking

    The measurement principle is that of wave shape recognition, distinguishing between the time constants for inrush current that typically are longer than the time constants for an internal fault. Date Code 20020129 Differential, Restricted Earth Fault, Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 62: Setting Descriptions

    Range: Y, N, Y1 The SEL-387E Relay has three sets of three-phase current inputs. Depending on the application, you may not need all of these inputs for the differential zone of protection. You can configure any unused terminals for stand-alone overcurrent protection. The E87Wn setting specifies which of the terminals the relay is to include in the differential calculation.

  • Page 63: Maximum Transformer Capacity, Three-Phase Mva (Mva)

    You can also directly enter tap values. Set MVA = OFF, and enter the TAP1 through TAP3 values directly, along with the other pertinent settings. Date Code 20020129 Differential, Restricted Earth Fault, Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 64: Restrained Element Operating Current Pickup (O87P)

    The SEL-387E Relay measures the amount of second-harmonic current flowing in the transformer. You can set the relay to block the percentage restrained differential element if the ratio of second-harmonic current to fundamental current (IF2/IF1) is greater than the PCT2 setting.

  • Page 65: Fourth-Harmonic Blocking Percentage Of Fundamental (Pct4)

    This even-harmonic current can be used to identify the inrush phenomenon and to prevent relay misoperation. The SEL-387E Relay measures the amount of fourth-harmonic current flowing in the transformer. You can set the relay to block the percentage restrained differential element if the ratio of fourth-harmonic current to fundamental current (IF4/IF1) is greater than the PCT4 setting.

  • Page 66: Dc Ratio Blocking (Dcrb)

    (HRSTR) settings available. Some magnetizing inrush cases contain very little harmonic content but contain a dc offset. The SEL-387E Relay can detect the dc offset and use it in the blocking (not restraint) logic. Enable this function by setting DCRB = Y.

  • Page 67: Setting Calculation

    A-phase CT connects to the nonpolarity end of the B-phase CT, and so on, in forming the delta. Thus, for WnCTC = 1, the relay uses the following [CTC(m)] matrix: Date Code 20020129 Differential, Restricted Earth Fault, 3-13 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 68 However, it removes zero-sequence components from the winding currents, as do all of the matrices having non-zero values of m. Î Þ Ï ß • Ï ß Ï ß Ð à 3-14 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 69: The Complete List Of Compensation Matrices (M = 1 To 12)

    (2, 4, 6, 8, 10, 12). Also, [CTC(m)] equals the minus of [CTC(m 6)], because these matrices represent shifts separated by exactly 180 degrees. Date Code 20020129 Differential, Restricted Earth Fault, 3-15 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 70: Selecting The Correct Values Of Wnctc For Each Winding

    The neutral point, if it is grounded, permits flow of zero-sequence current components in the windings and line outputs. 3-16 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 71: Five-Step Compensation Process

    For ACB phase rotation, begin at the winding direction and proceed in a CW direction until reaching the reference. Figure 3.8 shows these compensation directions. Date Code 20020129 Differential, Restricted Earth Fault, 3-17 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 72: Example 1 For Wnctc Selection

    CCW from the A winding direction (vertical), as we would expect for a DAB connection with ABC phase rotation. The A winding of the 24.9 kV winding is vertical. 3-18 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 73: Example 2 For Wnctc Selection

    Figure 3.10 illustrates the second example. This is another three-winding transformer, for which we have chosen rather unusual winding phase relationships in order to show the flexibility of the winding compensation feature in the SEL-387E Relay. The transformer has a 115 kV primary winding that is wye connected, with wye-connected CTs.
  • Page 74 30-degree increments, or seven “hours” of adjustment. Thus, we choose W2CTC = 7 as the setting. Similarly for Winding 3, we need an adjustment of five “hours,” so we 3-20 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 75: Winding Line-To-Line Voltages

    0.1 • I , when multiplied by the smallest of TAP1 through TAP3. Stated another way, ˜ (0.1 • I O87P ) / TAP Date Code 20020129 Differential, Restricted Earth Fault, 3-21 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 76: Restraint Slope Percentage

    IHBL settings. Thus, it must be set high enough so as not to react to large inrush currents. Note: U87P must be set lower than 31 • I /TAP , where TAP is the largest of the TAP settings. 3-22 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 77: Second-Harmonic Blocking

    When a three-phase transformer is energized, inrush harmonics are present in at least two phase currents. In traditional single-phase relays, each relay performs a comparison of the harmonic current flowing through its phase. The SEL-387E Relay can perform harmonic blocking two ways: œ...

  • Page 78: Example Of Setting The Sel-387E Relay For A Three-Winding Transformer

    Example of Setting the SEL-387E Relay for a Three-Winding Transformer In this section we use an example that forms the basis of the default differential settings we entered at the factory before shipping the relay.
  • Page 79 (Operate current pickup in multiple of tap) SLP1 (25 percent initial slope) SLP2 (50 percent second slope) IRS1 (limit of slope 1, Restraint current in multiple of tap) Date Code 20020129 Differential, Restricted Earth Fault, 3-25 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 80: Application Guidelines

    Application of Current Transformers Used for Protective Relaying Purposes. CT Arrangements Use separate relay restraint circuits for each power source to the relay. In the SEL-387E Relay you may apply two to four restraint inputs to the relay. You may connect CT secondary windings in parallel only if both circuits meet the following criteria: œ...

  • Page 81: Restricted Earth Fault Element

    MVA of the particular winding. If this rating is much smaller than the rating of the largest winding, you may violate the tap ratio limit for the SEL-387E Relay (see steps 4 and 5). As before, for wye-connected CTs I equals I .
  • Page 82 32IE (RW) E32I (SEL control equation) OGIC CTR1 IRW1 CTR3 32IOP=1,12 50GC (RW) CTR2 IRW2 CTR3 32IOP=2,12 50GP DWG: M387E046 Figure 3.11: REF Enable/Block Logic 3-28 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 83 3.13 shows the output of the REF protection function. Timing is on an extremely inverse-time overcurrent curve (curve U4) at the lowest time-dial setting (0.5) and with 50GP as the pickup setting. Date Code 20020129 Differential, Restricted Earth Fault, 3-29 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 84: Setting Descriptions

    Operate quantity for the directional element. Positive-Sequence Current Restraint Factor, I0/I1 (a0) Range: 0.02–0.50, in 0.01 steps 3-30 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 85: Residual Current Sensitivity Threshold (50Gp)

    1 for load imbalance. The second criterion relates to the relative sensitivity of the winding CTs compared to the neutral CT. Setting Calculation Operating Quantity Figure 3.14 depicts how to determine the Operate quantity, 32IOP, setting. Date Code 20020129 Differential, Restricted Earth Fault, 3-31 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 86 For the neutral CT connection, the relay uses only one of the three ABC inputs, e.g., IBW3, so the residual current for input 3 would be IRW3 = 0 + IBW3 + 0 = IBW3. 3-32 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 87: Residual Current Sensitivity Threshold

    Operating Characteristic Each winding input of the SEL-387E Relay has 11 overcurrent elements (see Table 3.1). Nine of these 11 are torque-controlled elements, of which there is one definite-time element, one instantaneous element, and one inverse-time element per each of three categories.

  • Page 88: 50Pn1 - Phase Definite-Time Element

    50Pn1 bit remains asserted for the duration of 50Pn1D. When 50Pn1 deasserts, the timer resets without delay, along with 50Pn1T if it has asserted. 3-34 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 89: 50Pn2 - Phase Instantaneous Element

    Relay Word bit, 50An3(4), 50Bn3(4), or 50Cn3(4). These bits enter an OR gate to assert Relay Word bit 50Pn3(4), indicating “any phase” pickup. Date Code 20020129 Differential, Restricted Earth Fault, 3-35 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 90: 51Pn - Phase Inverse-Time Element

    The phase inverse-time curve looks at all three phase current magnitudes and times on the basis of the greatest current of the three. It updates this maximum phase current selection every quarter-cycle. 3-36 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 91: 50Qn1 And 50Nn1 - Sequence Current Definite-Time Element Logic

    Relay Word bit, 50Nn1T, asserts. The 50Nn1T bit asserts only if the 50Nn1 bit remains asserted for the duration of 50Nn1D. When 50Nn1 deasserts, the timer resets without delay, along with 50Nn1T if it has asserted. Date Code 20020129 Differential, Restricted Earth Fault, 3-37 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 92: 50Qn2 And 50Nn2 - Sequence Instantaneous Element Logic

    Figure 3.21 shows the logic for the inverse-time 51Qn negative-sequence element and the instantaneous 51Nn residual element. Figure 3.21: 51Qn and 51Nn Sequence Inverse-Time O/C Element, Torque Controlled 3-38 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 93: 51Qn Negative-Sequence Inverse-Time Element

    The combined overcurrent elements operate on summed input currents to two windings. Elements 51PC1 and 51NC1 use phase and residual current from Windings 1 and 2. See Figure 3.22. Date Code 20020129 Differential, Restricted Earth Fault, 3-39 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 94: 51Pc1 And 51Nc1 Element Logic

    Figure 3.22: Combined Overcurrent Example 51PC1 and 51NC1 Element Logic The logic for the inverse-time combined overcurrent elements 51PC1 and 51NC1 is shown in Figure 3.23. 3-40 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 95 8000 A (primary) where n = Phase A, Phase B, or Phase C. Then, converting the observed primary values to secondary values, we have Date Code 20020129 Differential, Restricted Earth Fault, 3-41 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 96 RESET51 function under the OTHER button to force the bit to 1 during element testing. This saves time if you have chosen electromechanical reset. 3-42 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 97 Note: Because CTR1<CTR2, the relay uses CTR2 as the common base. secondary The combined secondary current value is less than the 51NC1P setting, so 51NC1 does not assert. Date Code 20020129 Differential, Restricted Earth Fault, 3-43 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 98 51NC1 deasserts and the element resets according to the setting 51NC1RS. At the completion of the reset, Relay Word bit 51NC1R asserts. This bit normally will be at logic state 3-44 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 99: Setting Descriptions

    Definite-Time Element Delays (50Pn1D, 50Qn1D, 50Nn1D) Range: 0–16000 cycles, in 0.25-cycle steps Select a time in cycles that you want definite-time elements to wait before asserting. Date Code 20020129 Differential, Restricted Earth Fault, 3-45 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 100: Inverse-Time Element Pickups (51Pnp, 51Qnp, 51Nnp, 51Pc1P, 51Nc1P)

    Transformer Overcurrent Protection Instantaneous overcurrent elements typically provide high-speed protection for high-current, internal transformer faults and coordinated backup protection for faults on the adjacent bus and/or 3-46 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 101: Overcurrent Element Operating Quantities

    Where the SEL-387E Relay is applied to a distribution substation transformer serving load centers, expected load conditions include steady-state load as well as transient conditions caused by hot and cold load pickup.

  • Page 102: Time-Overcurrent Element Settings

    Time-Overcurrent Element Settings The SEL-387E Relay includes time-overcurrent elements for phase, negative-sequence, and residual current. Each element operates using measured current and five settings that define: œ Pickup current, in secondary amperes œ...

  • Page 103: Time-Overcurrent Pickup

    51xnRS (x = P, Q, or N; n = winding number) setting equal to Y. With this setting, the relay emulates the spring-torque-governed disk reset action of an induction time- overcurrent unit. Make this setting when the SEL-387E Relay time-overcurrent element must coordinate with upstream electromechanical time-overcurrent relays during trip-reclose cycles.

  • Page 104: Overcurrent Element External Torque-Control

    Overcurrent Element External Torque-Control The SEL-387E Relay allows you to either enable or block selected overcurrent elements using a control equation. You may wish, for example, to control an overcurrent element using OGIC an external contact from a toggle switch, control switch, external directional relay, or recloser.

  • Page 105: Time Overcurrent Curve Reference Information

    ß Ð à Ð à I.E.C. Short-Time Inverse Curve: C5 Î Þ • Ï ß Ð à Î Þ • Ï ß Ð à Date Code 20020129 Differential, Restricted Earth Fault, 3-51 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 106 Figure 3.25: U.S. Inverse Curve: U2 Figure 3.24: U.S. Moderately Inverse Curve: U1 Figure 3.26: U.S. Very Inverse Curve: Figure 3.27: U.S. Extremely Inverse Curve: U4 3-52 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 107 Figure 3.28: U.S. Short-Time Inverse Curve: (Standard Inverse): C1 Figure 3.31: I.E.C. Class C Curve Figure 3.30: I.E.C. Class B Curve (Extremely Inverse): C3 (Very Inverse): C2 Date Code 20020129 Differential, Restricted Earth Fault, 3-53 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 108: Over-/Undervoltage Element

    Figure 3.32: I.E.C. Long-Time Inverse Curve: C5 Curve: C4 NDERVOLTAGE LEMENT Application Description The SEL-387E Relay offers the following overvoltage and undervoltage elements for protection, indication, and control functions: œ Two levels of phase undervoltage œ Two levels of phase-to-phase undervoltage œ...
  • Page 109 •WQQ• $(QQ $(QQ $(QQ! $(QQ! •WB•2•"W• $(B Q $(B!Q $(B! •W!• $(RQ •W • $(W Q 9XB)ÃÃH"'&@"# UQWD2Ã` Figure 3.34: Overvoltage Element Logic Diagram Date Code 20020129 Differential, Restricted Earth Fault, 3-55 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 110: Setting Descriptions

    Settings DELTA_Y and TPVI also affect whether these elements are available. 3-56 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 111: Phase Undervoltage Element Pickups (27Pnp)

    Positive-Sequence Overvoltage Element Pickup (59V1P) Range: OFF, 0.0–100.0 V Set the pickup for the positive-sequence voltage value above which you want the element to assert. Date Code 20020129 Differential, Restricted Earth Fault, 3-57 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 112: Definite-Time Characteristic

    LEMENT Application Description The SEL-387E Relay provides six levels of over-/underfrequency elements. Each element can operate as an overfrequency or as an underfrequency element, depending on its pickup setting. If the element pickup setting is less than the nominal system frequency setting, NFREQ, the element operates as an underfrequency element, picking up if measured frequency is less than the set point.
  • Page 113 Figure 3.37: Frequency Element Logic Note: Instantaneous frequency element Relay Word bits 81D1–81D6 should not be used for applications other than testing. Date Code 20020129 Differential, Restricted Earth Fault, 3-59 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 114: Setting Descriptions

    Application Description Overexcitation occurs when a transformer magnetic core becomes saturated. When this happens, stray flux is induced in nonlaminated components, causing overheating. In the SEL-387E Relay a volts/hertz element detects overexcitation. The SEL-387E Relay 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 115 !#9!9! !# 8 !#8S ‡ ‡ ‡ !#9!9 !#9!9! !#9!9! WC“ WC“ WC“ !#88T2V !#88T299 !#88T2D9 !#88T2D 9XB)ÃH"'&@$( Figure 3.38: Volts/Hertz Element Logic Diagram Date Code 20020129 Differential, Restricted Earth Fault, 3-61 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 116 à “ ‡ … † y ‡ !#9!Q!2 'È ‚ !#9!9!2 !Æ Sryh’Ã8uh…hp‡r…v†‡vp !#DQ2 'È Uv€rÃHvˆ‡r† 9XB)ÃÃH"B## Figure 3.40: Composite Inverse/Definite-Time Overexcitation Characteristic, 24CCS=ID 3-62 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 117: Setting Descriptions

    For wye-connected power transformer windings, the power transformer phase-to-neutral voltage is readily measured through wye-wye connected PTs. Set 24WDG = Y. When the power Date Code 20020129 Differential, Restricted Earth Fault, 3-63 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...

  • Page 118: Level 1 Volts/Hertz Element Pickup (24D1P)

    Level 2 Pickups (24D2P1 and 24D2P2) Range: 100–200% (for 24D2P1) Range: 101–200% (for 24D2P2) The SEL-387E Relay asserts the 24C2 Relay Word bit without time delay when the transformer volts/hertz exceeds either the 24D2P1 or 24D2P2 setting. Level 2 Time-Delays (24D2D1 and 24D2D2) Range: 0.04–400.00 s...

  • Page 119: When 24Ccs = Id

    Range: 100–200% The 24IP setting defines the pickup point of the inverse-time portion of the operating time curve. The SEL-387E Relay asserts the 24C2 Relay Word bit without time delay when the transformer volts/hertz exceeds the 24IP setting. Level 2 Inverse-Time Curve (24IC) Range: 0.5, 1.0, 2.0...

  • Page 120: When 24Ccs = U

    The 24IP setting defines the pickup point of the user-defined operating time curve. The SEL-387E Relay asserts the 24C2 Relay Word bit without time delay when the transformer volts/hertz exceeds the 24IP setting. The relay asserts the 24C2T Relay Word bit in time defined by the user-defined curve when the measured apparatus volts/hertz exceeds the user-defined setting.

  • Page 121: Volts/Hertz Setting Reference Information

    VNOM Í Ý Ì Ü Ì Ü Ì Ü Ì Ì Ü Ü Í Ý Figure 3.41: Volts/Hertz Inverse-Time Characteristic, 24IC = 0.5 Date Code 20020129 Differential, Restricted Earth Fault, 3-67 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 122 VNOM Í Ý Ì Ü Ì Ü Ì Ü Ì Ì Ü Ü Í Ý Figure 3.42: Volts/Hertz Inverse-Time Characteristic, 24IC = 1 3-68 Differential, Restricted Earth Fault, Date Code 20020129 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 123 VNOM Í Ý Ì Ü Ì Ü Ì Ü Ì Ì Ü Ü Í Ý Figure 3.43: Volts/Hertz Inverse-Time Characteristics, 24IC = 2 Date Code 20020129 Differential, Restricted Earth Fault, 3-69 Overcurrent, Voltage, and Frequency Elements SEL-387E Instruction Manual...
  • Page 125 LED 8 – 24 – Volts-per-Hertz Element................4-15 LED 9 – A – A-Phase Involved in the Fault (Programmable LEDA)........ 4-15 LED 10 – B – B-Phase Involved in the Fault (Programmable LEDB) ......4-16 Date Code 20020129 Control Logic SEL-387E Instruction Manual...
  • Page 126 Figure 4.5: Latch Bits in SEL Control Equation Sets..............4-10 OGIC Figure 4.6: SEL-387E Relay Front-Panel LEDs .................. 4-13 Figure 4.7: SEL-387E Relay Trip Logic (TRIP1) ................4-18 Figure 4.8: SEL-387E Relay Close Logic (CLS1) ................4-20 Control Logic Date Code 20020129...

  • Page 127: Optoisolated Inputs

    Optoisolated inputs receive their function by how their corresponding Relay Word bits are used in SEL control equations. Remember that any input Relay Word bit name will always OGIC appear on the right side of any SEL control equation, as shown below. OGIC Date Code 20020129 Control Logic SEL-387E Instruction Manual...

  • Page 128: Factory Settings Examples

    ONTROL WITCHES Remote control switches are operated via the serial communications port only (see Section 7: Serial Port Communications and Commands). Figure 4.1: Remote Control Switches Drive Remote Bits RB1 Through RB16 Control Logic Date Code 20020129 SEL-387E Instruction Manual...

  • Page 129: Remote Bit Application

    Global settings area (SHO G/SET G commands). Active Setting Group Indication Only one setting group can be active at a time. Relay Word bits SG1 through SG6 indicate the active setting group: Date Code 20020129 Control Logic SEL-387E Instruction Manual...

  • Page 130: Selecting The Active Setting Group

    With Setting Group 3 as the active setting group, if setting SS3 is deasserted to logical 0 and one of the other settings (e.g., setting SS5) asserts to logical 1, the relay switches from Setting Control Logic Date Code 20020129 SEL-387E Instruction Manual...

  • Page 131: Operation Of Serial Port Group Command And Front-Panel Group Pushbutton

    Table 4.2. Table 4.2: Active Setting Group Switching Input Logic Input States Active Setting Group IN103 IN102 IN101 Remote Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Date Code 20020129 Control Logic SEL-387E Instruction Manual...
  • Page 132 The SEL-387E Relay can be programmed to operate similarly. Use three optoisolated inputs to switch between the six setting groups in the SEL-387E Relay. In this example optoisolated inputs IN101, IN102, and IN103 on the relay are connected to a rotating selector switch in Figure 4.2.

  • Page 133: Chsg Relay Word Bit Asserts During Setting Group Changes

    The active setting group is retained if power to the relay is lost and then restored. If a particular setting group is active (e.g., Setting Group 5) when power is lost, it comes back with the same setting group active when power is restored. Date Code 20020129 Control Logic SEL-387E Instruction Manual...

  • Page 134: Note: Make Active Setting Group Switching Settings With Care

    OGIC constructing control equations. In the SEL-387E these variables are of two types: timed variables and latch bits. The variables are processed in the order in which they appear in the Settings Sheets. If variables that appear earlier are used as inputs to later variables, the processing of both will occur within the same processing interval.

  • Page 135: Variables/Timers

    Latch Control Switches The SEL control equations latch bit feature of this relay replaces latching relays. OGIC Traditional latching relays maintain their output contact state – they are not dependent on dc Date Code 20020129 Control Logic SEL-387E Instruction Manual...
  • Page 136 (e.g., SCADA, RTU, etc.). Figure 4.4: Traditional Latching Relay The latch bits in the SEL-387E Relay provide latching relay type functions (Figure 4.5). Figure 4.5: Latch Bits in SEL Control Equation Sets OGIC The output of the latch bit logic is a Relay Word bit SnLTm.

  • Page 137: Output Contacts

    The net effect is that the latch bits in the SEL-387E Relay behave exactly like traditional latching relays. Note: Make Latch Bit Settings With Care The latch bit states are stored in nonvolatile memory so they can be retained during power loss, settings change, or active setting group change.

  • Page 138: Operation Of Output Contacts For Different Output Contact Types

    The Relay Word bit NOTALM (not ALARM) is asserted to logical 1, and the ALARM output contact coil is energized, when the SEL-387E Relay is operating correctly. When the serial port command PULSE ALARM (or front-panel CNTRL ALARM) is executed, the NOTALM Relay Word bit momentarily deasserts to logical 0.

  • Page 139: Rotating Default Display

    ARGETING OGIC The SEL-387E Relay has 16 LEDs on the front panel. One (EN) is dedicated to indication of the relay’s operational condition. Twelve are dedicated to specific targeting functions. Three (LEDA, LEDB, and LEDC) have default targeting logic, but are fully programmable by the user.

  • Page 140: Led 1 - En - Relay Enabled

    If so, the 87E1 bit is also set. LED 4 remains lit until reset by the TRGTR element. TRGTR is asserted for one cycle either via the TARGET RESET pushbutton on the front panel or via the serial port command TAR R. 4-14 Control Logic Date Code 20020129 SEL-387E Instruction Manual...

  • Page 141: Led 5 - 87-2 - Differential Element 2

    IAWn phase current is greater than or equal to the magnitudes of IBWn and ICWn. Relay Word bit 87E1 indicates differential element 87-1 operation, and follows LED 4 operation (see LED 4 discussion). Date Code 20020129 Control Logic 4-15 SEL-387E Instruction Manual...

  • Page 142: Led 10 - B - B-Phase Involved In The Fault (Programmable Ledb)

    This LED will illuminate if any Winding 2 overcurrent element present in the TR1 through TR4 settings is asserted at the rising edge of the trip or one cycle later. Applicable elements include 4-16 Control Logic Date Code 20020129 SEL-387E Instruction Manual...

  • Page 143: Led 15 - W3 - Winding 3 Overcurrent Element Operation

    TARGET RESET pushbutton on the front panel or via the serial port command TAR R. RIP AND LOSE OGIC The trip logic and close logic for the SEL-387E Relay operate in a similar manner. Each has a control equation setting to set or latch the logic and another SEL control equation OGIC OGIC setting to reset or unlatch the logic.
  • Page 144 Figure 4.7: SEL-387E Relay Trip Logic (TRIP1) The logic begins with the assertion of SEL control equation TR1, one of the Group OGIC variables. In our example application Relay Word bits representing three Winding 1 overcurrent elements and the OPE 1 command are used to assert TR1. TR1 directly asserts TRIP1 via the three-input OR gate at the right.
  • Page 145 At the bottom of Figure 4.7 is an additional OR gate. The four TRIPm Relay Word bits are all inputs to this gate, and the output is another Relay Word bit TRIPL. TRIPL asserts for any trip output. It may be useful for other applications of SEL control equations in the SEL-387E OGIC Relay.

  • Page 146: Close Logic

    The default setting is 9 cycles. Close Logic There are three specific sets of close logic within the SEL-387E Relay. They are designed to operate when SEL control equation close variable setting CLm is asserted (m = 1, 2, 3) and...
  • Page 147 52A1 = IN101, 52A2 = IN102, and 52A3 = IN103. (Note again that inputs appear in the right side of an equation, outputs on the left side.) The connections for the 52a inputs are shown in Figure 2.19 in Section 2: Installation. Date Code 20020129 Control Logic 4-21 SEL-387E Instruction Manual...

  • Page 148: Sel Ogic Control Equations

    We intend in this manual to explain how SEL control equations OGIC work in general and how we implement these equations in the SEL-387E Relay. Control Equations Fundamental Description OGIC Relay Word bits are the basic building blocks of SEL control equations.

  • Page 149: Sel Ogic Control Equation Logical Operators

    0 or 1. Control Equation Logical Operators OGIC In the SEL-387E Relay, there are six logical operators that can be used in SEL control OGIC equations. These operators exist in a hierarchy, from the highest level operator to be processed to the lowest level operator.

  • Page 150: Rising-Edge And Falling-Edge Operators, / And

    We could set 51P1TC directly to 0. If 51P1TC = 0, the 51P1 element will never operate. This is one way, for example, to temporarily disable the 51P1 for some operational reason. It could be done using the SET command via a serial port from a remote location. 4-24 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 151 1 (logical 1) or 0 (logical 0) also have OGIC to be included in these limitations–each such setting counts as one element. After SELogic control equation settings have been made and the settings are saved, the SEL-387E Relay responds with the following message: SCEUSE xx.x GRnCHK yyyy This message indicates that xx.x% of the maximum number of Relay Word bits are being used...

  • Page 152: Relay Word Bits

    Table 4.9 lists the Relay Word bit definitions, in their row order. Table 4.10 lists the Relay Word bits alphabetically, to provide an easier method for looking for a specific bit. Table 4.8: SEL-387E Relay Word Bits and Locations SEL-387E Relay Word Bits...
  • Page 153 SEL-387E Relay Word Bits S3V1 S3V2 S3V3 S3V4 S3V5 S3V6 S3V7 S3V8 S3V1T S3V2T S3V3T S3V4T S3V5T S3V6T S3V7T S3V8T S1LT1 S1LT2 S1LT3 S1LT4 S2LT1 S2LT2 S2LT3 S2LT4 S3LT1 S3LT2 S3LT3 S3LT4 S3LT5 S3LT6 S3LT7 S3LT8 50GC 50G3 32IR 32IF...
  • Page 154 51P2T Winding 2 phase inverse-time O/C element timed out 51P2R Winding 2 phase inverse-time O/C 51P2 element is reset PDEM2 Winding 2 phase demand current threshold exceeded O/C element B-phase selection 4-28 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 155 51P3T Winding 3 phase inverse-time O/C element timed out 51P3R Winding 3 phase inverse-time O/C 51P3 element is reset PDEM3 Winding 3 phase demand current threshold exceeded O/C element C-phase selection Date Code 20020129 Control Logic 4-29 SEL-387E Instruction Manual...
  • Page 156 Level 2 phase-phase undervoltage picked up 27PP1 Level 1 phase-phase undervoltage picked up 27P2 Level 2 phase undervoltage picked up 27P1 Level 1 phase undervoltage picked up Reserved for future use Current transformer saturation 4-30 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 157 Unrestrained differential element picked up 87R1 Restrained differential element 1 picked up 87R2 Restrained differential element 2 picked up 87R3 Restrained differential element 3 picked up Restrained differential element picked up Date Code 20020129 Control Logic 4-31 SEL-387E Instruction Manual...
  • Page 158 Windings 1 and 2 residual inverse-time O/C element timed out 51NC1R Windings 1 and 2 residual inverse-time O/C element is reset DC battery voltage Level 1 exceeded DC battery voltage Level 2 exceeded 4-32 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 159 Setting Group 4 is the active setting group Setting Group 5 is the active setting group Setting Group 6 is the active setting group CHSG Timing to change setting groups Reserved for future use Date Code 20020129 Control Logic 4-33 SEL-387E Instruction Manual...
  • Page 160 Input IN308 asserted IN307 Input IN307 asserted IN306 Input IN306 asserted IN305 Input IN305 asserted IN304 Input IN304 asserted IN303 Input IN303 asserted IN302 Input IN302 asserted IN301 Input IN301 asserted 4-34 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 161 S3V6 timer input asserted OGIC S3V7 Set 3 SEL control equation variable S3V7 timer input asserted OGIC S3V8 Set 3 SEL control equation variable S3V8 timer input asserted OGIC Date Code 20020129 Control Logic 4-35 SEL-387E Instruction Manual...
  • Page 162 Combined residual current sensitivity threshold exceeded 50G3 W3 residual current sensitivity threshold exceeded 32IR 32I element reverse (external) fault declaration 32IF 32I element forward (internal) fault declaration REFP Restricted earth fault inverse-time O/C element timed-out 4-36 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 163 Reserved for future use CF1T Breaker 1 close failure timer timed out CF2T Breaker 2 close failure timer timed out CF3T Breaker 3 close failure timer timed out Reserved for future use Date Code 20020129 Control Logic 4-37 SEL-387E Instruction Manual...
  • Page 164 Output OUT301 asserted OUT302 Output OUT302 asserted OUT303 Output OUT303 asserted OUT304 Output OUT304 asserted OUT305 Output OUT305 asserted OUT306 Output OUT306 asserted OUT307 Output OUT307 asserted OUT308 Output OUT308 asserted 4-38 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 165 5HB1 Fifth-Harmonic block asserted for differential element 1 5HB2 Fifth-Harmonic block asserted for differential element 2 5HB3 Fifth-Harmonic block asserted for differential element 3 24C2 Level 2 Volts/Hertz composite element pickup Date Code 20020129 Control Logic 4-39 SEL-387E Instruction Manual...
  • Page 166 Winding 1 residual instantaneous O/C Level 2 element picked up 50N21 Winding 2 residual definite-time O/C Level 1 element picked up 50N21T Winding 2 residual definite-time O/C Level 1 element timed out 4-40 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 167 Winding 3 residual inverse-time O/C element picked up 51N3R Winding 3 residual inverse-time O/C 51N3 element is reset 51N3T Winding 3 residual inverse-time O/C element timed out 51NC1 Windings 1 and 2 residual inverse-time O/C element picked up Date Code 20020129 Control Logic 4-41 SEL-387E Instruction Manual...
  • Page 168 81D2 Level 2 frequency element 81D3 Level 3 frequency element 81D4 Level 4 frequency element 81D5 Level 5 frequency element 81D6 Level 6 frequency element 81D1T Level 1 definite-time frequency element 4-42 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 169 BCWC2 C-phase Breaker 2 contact wear threshold exceeded BCWC3 C-phase Breaker 3 contact wear threshold exceeded Breaker 1 CLOSE command execution Breaker 2 CLOSE command execution Breaker 3 CLOSE command execution Date Code 20020129 Control Logic 4-43 SEL-387E Instruction Manual...
  • Page 170 Input IN212 asserted IN213 Input IN213 asserted IN214 Input IN214 asserted IN215 Input IN215 asserted IN216 Input IN216 asserted IN301 Input IN301 asserted IN302 Input IN302 asserted IN303 Input IN303 asserted 4-44 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 171 Winding 3 residual demand current threshold exceeded NOTALM ALARM output not asserted Breaker 1 OPEN command execution Breaker 2 OPEN command execution Breaker 3 OPEN command execution O/C element A-phase selection O/C element B-phase selection Date Code 20020129 Control Logic 4-45 SEL-387E Instruction Manual...
  • Page 172 Output OUT307 asserted OUT308 Output OUT308 asserted OUT309 Output OUT309 asserted OUT310 Output OUT310 asserted OUT311 Output OUT311 asserted OUT312 Output OUT312 asserted OUT313 Output OUT313 asserted OUT314 Output OUT314 asserted 4-46 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 173 S1V4 Set 1 SEL control equation variable S1V4 timer input asserted OGIC S1V4T Set 1 SEL control equation variable S1V4 timer output asserted OGIC S2LT1 Set 2 latch bit S2LT1 asserted Date Code 20020129 Control Logic 4-47 SEL-387E Instruction Manual...
  • Page 174 S3V8 timer output asserted OGIC Setting Group 1 is the active setting group Setting Group 2 is the active setting group Setting Group 3 is the active setting group 4-48 Control Logic Date Code 20020129 SEL-387E Instruction Manual...
  • Page 175 Fifth-Harmonic alarm threshold exceeded for longer than TH5D TRGTR Target reset pushbutton/TAR R command TRIP1 Trip 1 logic asserted TRIP2 Trip 2 logic asserted TRIP3 Trip 3 logic asserted TRIP4 Trip 4 logic asserted TRIPL Any trip asserted Date Code 20020129 Control Logic 4-49 SEL-387E Instruction Manual...
  • Page 177 Table 5.2: Self-Test Alarm Limits ...................... 5-17 FIGURES Figure 5.1: SEL-387E Relay Demand Ammeter Functions and Commands ......... 5-6 Figure 5.2: Station DC Battery Monitor Alarm Logic ................5-9 Figure 5.3: Undervoltage and Overvoltage Warning and Alarm Regions ........... 5-10...
  • Page 178 Figure 5.4: Trip Bus Sensing With Relay Input ................... 5-11 Figure 5.5: Breaker Contact Wear Curve ..................... 5-12 Table of Contents Date Code 20020129 SEL-387E Instruction Manual...

  • Page 179: Metering And Monitoring

    METERING AND MONITORING NTRODUCTION The SEL-387E Relay provides metering information in several report formats, for each of the three three-phase winding current inputs and three voltage inputs, and for the three differential elements. A dc battery monitor reports on the supply voltage to the relay and can be programmed to alarm for voltage excursions.

  • Page 180: Demand Ammeter Function (Meter D Command)

    =>> Demand Ammeter Function (METER D Command) The SEL-387E Relay includes a thermal demand metering function for all three current windings. In response to the METER D (MET D) command, the individual phase demand currents, as well as the negative-sequence and residual demand currents for each winding, are displayed in primary RMS amperes.

  • Page 181: Peak Demand Ammeter Function (Meter P Command)

    In response to the METER P (MET P) command, the phase current peak demands, as well as the negative-sequence and residual current peak demands for each winding, are displayed in Date Code 20020129 Metering and Monitoring SEL-387E Instruction Manual...

  • Page 182: Differential Metering Function (Meter Dif Command)

    32767, the report will be repeated m times in succession. In this mode subsequent reports are not generated until the previous report has been completely sent. The format for the METER DIF report is as follows: Metering and Monitoring Date Code 20020129 SEL-387E Instruction Manual...

  • Page 183: Phasor Metering Function (Meter Sec Command)

    VAWX to an angle of zero degrees. However, if the magnitude of VAWX is less than 0.0975 • V (13 V for a 120 V relay), the angles are listed according to the phasor calculation, without further adjustment. Date Code 20020129 Metering and Monitoring SEL-387E Instruction Manual...

  • Page 184: Demand Reset Functions (Meter Rd And Meter Rp Commands)

    Negative-sequence current demand is compared to QDEMnP, and Relay Word bit QDEMn is set if the threshold is exceeded. Residual current demand is compared to NDEMnP, and Relay Word bit NDEMn is set if the threshold is exceeded. Figure 5.1: SEL-387E Relay Demand Ammeter Functions and Commands Metering and Monitoring Date Code 20020129...

  • Page 185: Harmonic Metering Function (Meter H Command)

    15 123.12 123.12 123.12 123.12 123.12 123.12 123.12 123.12 123.12 123.12 123.12 123.12 =>> The Analog Input Labels, IAW1, etc., will be listed as they are set in the Global Settings section of the relay. Date Code 20020129 Metering and Monitoring SEL-387E Instruction Manual...

  • Page 186: Energy Metering Function (Meter E Command)

    Three-phase incoming reactive power Use the METER RE (MET RE) to reset the energy data. In response to the METER RE command, the relay displays the following message: Reset Energies (Y/N)? Metering and Monitoring Date Code 20020129 SEL-387E Instruction Manual...

  • Page 187: Station Dc Battery Monitor

    ATTERY ONITOR Use the station dc battery monitor in the SEL-387E Relay to alarm for undervoltage and overvoltage dc battery conditions and to view how station dc battery voltage fluctuates during tripping, closing, and other dc control functions. The monitor measures station dc battery voltage applied to the rear-panel terminals labeled Z25 (+) and Z26 (–).

  • Page 188: Detection Of Voltage Dips In Event Reports

    REAKER ONITOR The SEL-387E Relay breaker monitoring function captures information on the number of operations and total interrupted current for as many as three breakers. These data are used to estimate the amount of contact wear per pole, based on wear curve information the user derives from breaker manufacturer maintenance curves and enters into the relay.

  • Page 189: Breaker Wear Curve Description And Settings

    In order to capture trip information for other Breaker 1 trips initiated by devices other than the SEL-387E Relay, BKMONn must be set to sense these trips. This can be done, for example, by using an input to monitor the trip bus for the given breaker. This is illustrated in Figure 5.4, where IN106 is connected to the Breaker 1 trip bus and asserts for any trip from any source.
  • Page 190 The two straight line segments of the curve between the three defined points define the number of operations as a function of current in kiloamperes by an equation of the form: I • 5-12 Metering and Monitoring Date Code 20020129 SEL-387E Instruction Manual...
  • Page 191 This can be done via the BRE R n (or BRE n R) serial port command or from the front panel via the OTHER pushbutton menu. Both the BRE W n and BRE R n commands can be executed from Access Level B or 2. Date Code 20020129 Metering and Monitoring 5-13 SEL-387E Instruction Manual...

  • Page 192: Breaker Wear Example

    TATUS ONITOR The status monitor of the SEL-387E Relay is designed to provide information on the internal health of the relay’s major components. The relay continuously runs a variety of self-tests. Some tests have warning and failure states; others only have failure states.

  • Page 193: Status Monitor Report Function (Status Command)

    Reboot the relay and clear status Are you sure (Y/N) ? If you select “N” or “n”, the relay displays: Canceled and aborts the command. If you select “Y”, the relay displays: Rebooting the relay Date Code 20020129 Metering and Monitoring 5-15 SEL-387E Instruction Manual...

  • Page 194: Channel Offset

    The relay verifies the A/D converter function by checking the A/D conversion time. The test fails if conversion time is excessive or a conversion starts but does not finish. There is no warning state for this test. 5-16 Metering and Monitoring Date Code 20020129 SEL-387E Instruction Manual...

  • Page 195: Critical Ram

    –15 V Power Supply –14.40/–15.60 Vdc –14.00/–16.00 Vdc Temperature –40/+85•C –50/+100•C Cannot READ/WRITE Flash ROM Bad Checksum Slow Conversion Critical RAM Bad Checksum EEPROM Bad Checksum IO_BRD Incorrect Interface Board Value Date Code 20020129 Metering and Monitoring 5-17 SEL-387E Instruction Manual...
  • Page 197 Communications Ports......................6-8 Default Settings ..........................6-9 SEL-387E Relay SHO G (Show Global Settings)..............6-9 SEL-387E Relay SHO P (Show Port Settings) ..............6-10 SEL-387E Relay SHO R (Show SER Settings) ..............6-11 SEL-387E Relay Default Settings (5 A) ................6-12 SEL-387E Relay Default Settings (1 A) ................

  • Page 199: Setting The Relay

    The SET commands in Table 6.1 operate at Access Level 2 (screen prompt: =>>). To change a specific setting, enter the command: SET n m s TERSE Date Code 20020129 Setting the Relay SEL-387E Instruction Manual...
  • Page 200 (see Table 6.1), the relay is not disabled while it saves the new settings. The ALARM contact closes momentarily (for a "b" contact, opens for an "a") but the EN LED remains on while the new settings are saved. Setting the Relay Date Code 20020129 SEL-387E Instruction Manual...

  • Page 201: Additional Relay Settings

    VA. The three-phase power calculation assumes a balanced three-phase system when TPVI=N. The TPVI=N selection supports the V/Hz element when only a single PT is available, connected to the A phase. Date Code 20020129 Setting the Relay SEL-387E Instruction Manual...

  • Page 202: Demand Ammeter (Datc, Pdem, Qdem, Ndem)

    Winding 3 element pickup is used to detect external tertiary circuit faults that may be too weak to be detected by the Setting the Relay Date Code 20020129 SEL-387E Instruction Manual...

  • Page 203: System Frequency (Nfreq) And Phase Rotation (Phrot)

    System Frequency (NFREQ) and Phase Rotation (PHROT) The relay settings NFREQ and PHROT establish your basic system parameters for the SEL-387E Relay. 1. Set NFREQ equal to the nominal power system operating frequency, either 50 Hz or 60 Hz.

  • Page 204: Miscellaneous (Date_F, Scrold, Fp_To, Tgr)

    Relay Word elements to describe the triggering conditions for OGIC that particular monitor. When triggered, the monitor measures the three-phase currents 1.5 cycles after triggering, adds them to the total accumulated current for that breaker, and adds one Setting the Relay Date Code 20020129 SEL-387E Instruction Manual...

  • Page 205: Analog Input Labels

    The SER settings are made after issuing the SET R command from a communications port. The SER operation and settings are described fully in Section 9: Event Reports and Sequential Events Reporting. Date Code 20020129 Setting the Relay SEL-387E Instruction Manual...

  • Page 206: Communications Ports

    Communications Ports There are four communications ports on the SEL-387E Relay. Port 1 is an EIA-485 port on the rear panel. Ports 2 and 3, also on the rear panel, are EIA-232. Port 4 is an EIA-232 port on the front panel.

  • Page 207: Default Settings

    EFAULT ETTINGS SEL-387E Relay SHO G (Show Global Settings) =>>SHO G<ENTER> = 15 NFREQ = 60 PHROT = ABC DELTA_Y = Y DATE_F = MDY SCROLD = 2 FP_TO = 16 DC1P = OFF DC2P = OFF DC3P = OFF...

  • Page 208: Sel-387E Relay Sho P (Show Port Settings)

    =>> Note: SCEUSE is the percent of SEL control equations used in Global settings. GBLCHK OGIC is the Global setting checksum used by the relay’s diagnostics. SEL-387E Relay SHO P (Show Port Settings) =>>SHO P<ENTER> Port F PROTO = SEL...

  • Page 209: Sel-387E Relay Sho R (Show Ser Settings)

    SEL-387E Relay SHO R (Show SER Settings) =>>SHO R<ENTER> SER1 =IN101,IN102,IN103,IN104,IN105,IN106 SER2 =OUT101,OUT102,OUT103,OUT104,OUT105,OUT106,OUT107 SER3 SER4 ALIAS1 =NA ALIAS2 =NA ALIAS3 =NA ALIAS4 =NA ALIAS5 =NA ALIAS6 =NA ALIAS7 =NA ALIAS8 =NA ALIAS9 =NA ALIAS10 =NA ALIAS11 =NA ALIAS12 =NA ALIAS13 =NA...

  • Page 210: Sel-387E Relay Default Settings (5 A)

    SEL-387E Relay Default Settings (5 A) =>>SHO<ENTER> Group 1 =XFMR 1 =STATION A E87W1 E87W2 E87W3 EOC1 EOC2 EOC3 EOCC ESLS1 ESLS2 ESLS3 W1CT W2CT W3CT CTR1 = 120 CTR2 = 240 CTR3 = 400 = 100.0 ICOM W1CTC = 11...
  • Page 211 47.8 GR1CHK 68EB =>> Note: SCEUSE is the percent of SEL control equations used in this setting group. OGIC GRnCHK is the Group setting checksum used by the relay’s diagnostics. Date Code 20020129 Setting the Relay 6-13 SEL-387E Instruction Manual...

  • Page 212: Sel-387E Relay Default Settings (1 A)

    SEL-387E Relay Default Settings (1 A) =>>SHO<ENTER> Group 1 =XFMR 1 =STATION A E87W1 E87W2 E87W3 EOC1 EOC2 EOC3 EOCC ESLS1 ESLS2 ESLS3 W1CT W2CT W3CT CTR1 = 600 CTR2 = 1200 CTR3 = 2000 = 100.0 ICOM W1CTC = 11...
  • Page 213 OUT102 =TRIP2 OUT103 =TRIP3 OUT104 =TRIP4 OUT105 =CLS1 OUT106 =CLS2 OUT107 =CLS3 OUT201 =0 OUT202 =0 OUT203 =0 OUT204 =0 OUT205 =0 OUT206 =0 OUT207 =0 (continued on next page) Date Code 20020129 Setting the Relay 6-15 SEL-387E Instruction Manual...
  • Page 214 Refer to Section 1: Introduction and Specifications for information on 5 A nominal and 1 A nominal ordering options and how they influence overcurrent element setting ranges and accuracies. 6-16 Setting the Relay Date Code 20020129 SEL-387E Instruction Manual...
  • Page 215 SEL-387E Settings Sheets Page 1 of 27 Group Settings (SET Command) Date Group ONFIGURATION ETTINGS Relay Identifier (39 Characters) RID = Terminal Identifier (59 Characters) TID = Enable Winding 1 in Differential Element (Y, N, Y1) E87W1 Enable Winding 2 in Differential Element (Y, N, Y1)
  • Page 216 SEL-387E Settings Sheets Page 2 of 27 Group Settings (SET Command) Date Group Winding 2 Line-to-Line Voltage (1–1000 kV) VWDG2 Winding 3 Line-to-Line Voltage (1–1000 kV) VWDG3 PT Ratio (1–6500) Compensation Angle (0–360 degrees) COMPANG Voltage-Current Winding (1, 2, 3, 12)
  • Page 217 SEL-387E Settings Sheets Page 3 of 27 Group Settings (SET Command) Date Group Operating Quantity from W 1, W 2 (1, 2, 12) 32IOP Positive-Sequence Current Restraint Factor, I0/I1 (0.02–0.50) Residual Current Sensitivity Threshold (0.25–15.00 A secondary) (5 A) (0.05–3.00 A secondary) (1 A)
  • Page 218 SEL-387E Settings Sheets Page 4 of 27 Group Settings (SET Command) Date Group O/C E INDING EGATIVE EQUENCE LEMENTS Note: All negative-sequence element pickup settings are in terms of 3I Neg.-Seq. Def.-Time O/C Level 1 PU (OFF, 0.25–100.00 A secondary) (5 A) (OFF, 0.05–20.00 A secondary) (1 A)
  • Page 219 SEL-387E Settings Sheets Page 5 of 27 Group Settings (SET Command) Date Group Residual Inv.-Time O/C PU (OFF, 0.5–16.0 A secondary) (5 A) (OFF, 0.1–3.2 A secondary) (1 A) 51N1P Residual Inv.-Time O/C Curve (U1–U5, C1–C5) 51N1C Residual Inv.-Time O/C Time-Dial (US 0.5–15.0, IEC 0.05–1.00) 51N1TD Residual Inv.-Time O/C EM Reset (Y, N)
  • Page 220 SEL-387E Settings Sheets Page 6 of 27 Group Settings (SET Command) Date Group Phase Inst. O/C Level 3 PU (OFF, 0.25–100.00 A secondary) (5 A) (OFF, 0.05–20.00 A secondary) (1 A) 50P23P Phase Inst. O/C Level 4 PU (OFF, 0.25–100.00 A secondary) (5 A) (OFF, 0.05–20.00 A secondary) (1 A)
  • Page 221 SEL-387E Settings Sheets Page 7 of 27 Group Settings (SET Command) Date Group 51Q2 Torque Control (SEL control equation) OGIC 51Q2TC = O/C E INDING ESIDUAL LEMENTS Residual Def.-Time O/C Level 1 PU (OFF, 0.25–100.00 A secondary) (5 A) (OFF, 0.05–20.00 A secondary) (1 A) 50N21P Residual Level 1 O/C Delay (0–16000 cycles)
  • Page 222 SEL-387E Settings Sheets Page 8 of 27 Group Settings (SET Command) Date Group 3 O/C E INDING LEMENTS O/C E INDING HASE LEMENTS Phase Def.-Time O/C Level 1 PU (OFF, 0.25–100.00 A secondary) (5 A) (OFF, 0.05–20.00 A secondary) (1 A) 50P31P Phase Level 1 O/C Delay (0–16000 cycles)
  • Page 223 SEL-387E Settings Sheets Page 9 of 27 Group Settings (SET Command) Date Group 50Q31 Torque Control (SEL control equation) OGIC 50Q31TC = Neg.-Seq. Inst. O/C Level 2 PU (OFF, 0.25–100.00 A secondary) (5 A) (OFF, 0.05–20.00 A secondary) (1 A)
  • Page 224 SEL-387E Settings Sheets Page 10 of 27 Group Settings (SET Command) Date Group 51N3 Torque Control (SEL control equation) OGIC 51N3TC = INDING EMAND ETERING Demand Ammeter Time Constant (OFF, 5–255 min) DATC3 Phase Demand Ammeter Threshold (0.5–16.0 A secondary) (5 A) (0.1–3.2 A secondary) (1 A)
  • Page 225 SEL-387E Settings Sheets Page 11 of 27 Group Settings (SET Command) Date Group Level 1 Time Delay (0.04–400.00 seconds) 24D1D Level 2 Composite Curve Shape (OFF, DD, ID, I, U) 24CCS Level 2 Inv.-Time Pickup (100–200%) 24IP Level 2 Inv.-Time Curve (0.5, 1.0, 2.0) 24IC Level 2 Inv.-Time Factor (0.1–10.0 seconds)
  • Page 226 SEL-387E Settings Sheets Page 12 of 27 Group Settings (SET Command) Date Group Level 2 Time Delay (0.04–300.00 seconds) 81D2D Level 3 Pickup (OFF, 40.10–65.00 Hz) 81D3P Level 3 Time Delay (0.04–300.00 seconds) 81D3D Level 4 Pickup (OFF, 40.10–65.00 Hz) 81D4P Level 4 Time Delay (0.04–300.00 seconds)
  • Page 227 SEL-387E Settings Sheets Page 13 of 27 Group Settings (SET Command) Date Group Set 1 Latch Bit 2 SET Input (SEL control equation) OGIC S1SLT2 = Set 1 Latch Bit 2 RESET Input (SEL control equation) OGIC S1RLT2 = Set 1 Latch Bit 3 SET Input (SEL...
  • Page 228 SEL-387E Settings Sheets Page 14 of 27 Group Settings (SET Command) Date Group Set 2 Latch Bit 2 SET Input (SEL control equation) OGIC S2SLT2 = Set 2 Latch Bit 2 RESET Input (SEL control equation) OGIC S2RLT2 = Set 2 Latch Bit 3 SET Input (SEL...
  • Page 229 SEL-387E Settings Sheets Page 15 of 27 Group Settings (SET Command) Date Group Set 3 Variable 6 (SEL control equation) OGIC S3V6 = S3V6 Timer Pickup (0–999999 cycles) S3V6PU S3V6 Timer Dropout (0–999999 cycles) S3V6DO Set 3 Variable 7 (SEL...
  • Page 230 SEL-387E Settings Sheets Page 16 of 27 Group Settings (SET Command) Date Group Set 3 Latch Bit 6 SET Input (SEL control equation) OGIC S3SLT6 = Set 3 Latch Bit 6 RESET Input (SEL control equation) OGIC S3RLT6 = Set 3 Latch Bit 7 SET Input (SEL...
  • Page 231 SEL-387E Settings Sheets Page 17 of 27 Group Settings (SET Command) Date Group VENT EPORT RIGGERING UTPUT ONTACT OGIC TANDARD UTPUTS OUT101 OUT102 OUT103 OUT104 OUT105 OUT106 OUT107 UTPUT ONTACT OGIC XTRA NTERFACE OARD OUT201 OUT202 OUT203 OUT204 OUT205 OUT206...
  • Page 232 SEL-387E Relay Settings Sheet Page 18 of 27 Global Settings (SET G Command) Date ELAY ETTINGS Length of Event Report (15, 29, 60 cycles) Length of Pre-fault in Event Report (1 to (LER-1)) Nominal Frequency (50, 60 Hz) NFREQ Phase Rotation (ABC, ACB)
  • Page 233 SEL-387E Relay Settings Sheet Page 19 of 27 Global Settings (SET G Command) Date Close/Open Set Point 3 max (1–65000 operations) B2COP3 kA Interrupted Set Point 3 min (0.1–999.0 kA primary) B2KAP3 REAKER ONITOR BKR3 Trigger Equation (SEL control equation)
  • Page 234 SEL-387E Relay Settings Sheet Page 20 of 27 Global Settings (SET G Command) Date Select Setting Group 4 (SEL control equation) OGIC SS4 = Select Setting Group 5 (SEL control equation) OGIC SS5 = Select Setting Group 6 (SEL control equation)
  • Page 235 SEL-387E Relay Settings Sheet Page 21 of 27 Global Settings (SET G Command) Date Show Display Point 6 (SEL control equation) OGIC DP6 = DP6 Label 1 (16 characters) (Enter NA to Null) DP6_1 DP6 Label 0 (16 characters) (Enter NA to Null)
  • Page 236 SEL-387E Relay Settings Sheet Page 22 of 27 Global Settings (SET G Command) Date Show Display Point 14 (SEL control equation) OGIC DP14 = DP14 Label 1 (16 characters) (Enter NA to Null) DP14_1 DP14 Label 0 (16 characters) (Enter NA to Null)
  • Page 237 SEL-387E Relay Settings Sheet Page 23 of 27 Global Settings (SET G Command) Date Local Bit LB6 Name (14 characters) (Enter NA to Null) NLB6 Clear Local Bit LB6 Label (7 characters) (Enter NA to Null) CLB6 Set Local Bit LB6 Label (7 characters) (Enter NA to Null)
  • Page 238 SEL-387E Relay Settings Sheet Page 24 of 27 Global Settings (SET G Command) Date Clear Local Bit LB14 Label (7 characters) (Enter NA to Null) CLB14 Set Local Bit LB14 Label (7 characters) (Enter NA to Null) SLB14 Pulse Local Bit LB14 Label (7 characters) (Enter NA to Null)
  • Page 239 SEL-387E Relay Settings Sheet Page 25 of 27 Sequential Events Recorder Settings Date (SET R Command) RIGGER ONDITIONS Trigger SER (24 Relay Word bits per SERn equation, 96 total) SER1 SER2 SER3 SER4 ELAY LIASES Syntax: ’Relay-Word Bit’ ’Up to 15 characters’. Use NA to disable setting.
  • Page 240 SEL-387E Relay Settings Sheet Page 26 of 27 Port Settings (SET P Command) Date Note: RTSCTS setting does not appear if PROTO=LMD or DNP. PREFIX, ADDR, and SETTLE do not appear if PROTO=SEL or DNP. See Appendix C: SEL Distributed Port Switch Protocol (LMD) for details on LMD protocol and see Appendix G: Distributed Network Protocol (DNP) 3.00 for details on DNP protocol.
  • Page 241 SEL-387E Relay Settings Sheet Page 27 of 27 Port Settings (SET P Command) Date 3 (SET P 3) R , EIA-232 ANEL Port Protocol (SEL, LMD, DNP) PROTO LMD Prefix (@, #, $, %, &) PREFIX LMD Address (1–99) ADDR LMD Settling Time (0–30 seconds)
  • Page 243 SEL-387E Relay Settings Sheet Page 1 of 27 Group Settings (SET Command) Example Date Group ONFIGURATION ETTINGS Relay Identifier (39 Characters) RID = XFMR 1 Terminal Identifier (59 Characters) TID = STATION A Enable Winding 1 in Differential Element (Y, N, Y1)
  • Page 244 SEL-387E Relay Settings Sheet Page 2 of 27 Group Settings (SET Command) Example Date Group Winding 2 Line-to-Line Voltage (1–1000 kV) VWDG2 Winding 3 Line-to-Line Voltage (1–1000 kV) VWDG3 13.8 PT Ratio (1–6500) 2000 Compensation Angle (0–360 degrees) COMPANG Voltage-Current Winding (1, 2, 3, 12)
  • Page 245 SEL-387E Relay Settings Sheet Page 3 of 27 Group Settings (SET Command) Example Date Group Operating Quantity from W 1, W 2 (1, 2, 12) 32IOP Positive-Sequence Current Restraint Factor, I0/I1 (0.02–0.50) 0.10 Residual Current Sensitivity Threshold (0.25–15.00 A secondary) (5 A) 50GP 0.10...
  • Page 246 SEL-387E Relay Settings Sheet Page 4 of 27 Group Settings (SET Command) Example Date Group O/C E INDING EGATIVE EQUENCE LEMENTS Note: All negative-sequence element pickup settings are in terms of 3I Neg.-Seq. Def.-Time O/C Level 1 PU (OFF, 0.25–100.00 A secondary) (5 A) 50Q11P (OFF, 0.05–20.00 A secondary) (1 A)
  • Page 247 SEL-387E Relay Settings Sheet Page 5 of 27 Group Settings (SET Command) Example Date Group Residual Inv.-Time O/C PU (OFF, 0.5–16.0 A secondary) (5 A) 51N1P = OFF (OFF, 0.1–3.2 A secondary) (1 A) Residual Inv.-Time O/C Curve (U1–U5, C1–C5)
  • Page 248 SEL-387E Relay Settings Sheet Page 6 of 27 Group Settings (SET Command) Example Date Group Phase Inst. O/C Level 3 PU (OFF, 0.25–100.00 A secondary) (5 A) 50P23P = 0.50 (OFF, 0.05–20.00 A secondary) (1 A) 0.10 Phase Inst. O/C Level 4 PU (OFF, 0.25–100.00 A secondary) (5 A)
  • Page 249 SEL-387E Relay Settings Sheet Page 7 of 27 Group Settings (SET Command) Example Date Group 51Q2 Torque Control (SEL control equation) OGIC 51Q2TC = O/C E INDING ESIDUAL LEMENTS Residual Def.-Time O/C Level 1 PU (OFF, 0.25–100.00 A secondary) (5 A)
  • Page 250 SEL-387E Relay Settings Sheet Page 8 of 27 Group Settings (SET Command) Example Date Group 3 O/C E INDING LEMENTS O/C E INDING HASE LEMENTS Phase Def.-Time O/C Level 1 PU (OFF, 0.25–100.00 A secondary) (5 A) 50P31P = 7.00 (OFF, 0.05–20.00 A secondary) (1 A)
  • Page 251 SEL-387E Relay Settings Sheet Page 9 of 27 Group Settings (SET Command) Example Date Group 50Q31 Torque Control (SEL control equation) OGIC 50Q31TC = Neg.-Seq. Inst. O/C Level 2 PU (OFF, 0.25–100.00 A secondary) (5 A) 50Q32P = OFF (OFF, 0.05–20.00 A secondary) (1 A)
  • Page 252 SEL-387E Relay Settings Sheet Page 10 of 27 Group Settings (SET Command) Example Date Group 51N3 Torque Control (SEL control equation) OGIC 51N3TC = INDING EMAND ETERING Demand Ammeter Time Constant (OFF, 5–255 min) DATC3 = 15 Phase Demand Ammeter Threshold (0.5–16.0 A secondary) (5 A)
  • Page 253 SEL-387E Relay Settings Sheet Page 11 of 27 Group Settings (SET Command) Example Date Group Level 1 Time Delay (0.04–400.00 seconds) 24D1D = 1.00 Level 2 Composite Curve Shape (OFF, DD, ID, I, U) 24CCS = ID Level 2 Inv.-Time Pickup (100–200%)
  • Page 254 SEL-387E Relay Settings Sheet Page 12 of 27 Group Settings (SET Command) Example Date Group Level 2 Time Delay (0.04–300.00 seconds) 81D2D = 300.00 Level 3 Pickup (OFF, 40.10–65.00 Hz) 81D3P = OFF Level 3 Time Delay (0.04–300.00 seconds) 81D3D = 300.00...
  • Page 255 SEL-387E Relay Settings Sheet Page 13 of 27 Group Settings (SET Command) Example Date Group Set 1 Latch Bit 2 SET Input (SEL control equation) OGIC S1SLT2 = Set 1 Latch Bit 2 RESET Input (SEL control equation) OGIC S1RLT2 =...
  • Page 256 SEL-387E Relay Settings Sheet Page 14 of 27 Group Settings (SET Command) Example Date Group Set 2 Latch Bit 2 SET Input (SEL control equation) OGIC S2SLT2 = Set 2 Latch Bit 2 RESET Input (SEL control equation) OGIC S2RLT2 =...
  • Page 257 SEL-387E Relay Settings Sheet Page 15 of 27 Group Settings (SET Command) Example Date Group Set 3 Variable 6 (SEL control equation) OGIC S3V6 = S3V6 Timer Pickup (0–999999 cycles) S3V6PU S3V6 Timer Dropout (0–999999 cycles) S3V6DO Set 3 Variable 7 (SEL...
  • Page 258 SEL-387E Relay Settings Sheet Page 16 of 27 Group Settings (SET Command) Example Date Group Set 3 Latch Bit 6 SET Input (SEL control equation) OGIC S3SLT6 = Set 3 Latch Bit 6 RESET Input (SEL control equation) OGIC S3RLT6 =...
  • Page 259 SEL-387E Relay Settings Sheet Page 17 of 27 Group Settings (SET Command) Example Date Group VENT EPORT RIGGERING /50P11+/51P1+/51Q1+/51P2+/51Q2+/51P3 UTPUT ONTACT OGIC TANDARD UTPUTS OUT101 TRIP1 OUT102 TRIP2 OUT103 TRIP3 OUT104 TRIP4 OUT105 CLS1 OUT106 CLS2 OUT107 CLS3 UTPUT ONTACT...
  • Page 260 SEL-387E Relay Settings Sheet Page 18 of 27 Global Settings (SET G Command) Example Date ELAY ETTINGS Length of Event Report (15, 29, 60 cycles) Length of Pre-fault in Event Report (1 to (LER-1)) Nominal Frequency (50, 60 Hz) NFREQ...
  • Page 261 SEL-387E Relay Settings Sheet Page 19 of 27 Global Settings (SET G Command) Example Date Close/Open Set Point 3 max (1–65000 operations) B2COP3 kA Interrupted Set Point 3 min (0.1–999.0 kA primary) B2KAP3 20.0 REAKER ONITOR BKR3 Trigger Equation (SEL...
  • Page 262 SEL-387E Relay Settings Sheet Page 20 of 27 Global Settings (SET G Command) Example Date Select Setting Group 4 (SEL control equation) OGIC SS4 = Select Setting Group 5 (SEL control equation) OGIC SS5 = Select Setting Group 6 (SEL...
  • Page 263 SEL-387E Relay Settings Sheet Page 21 of 27 Global Settings (SET G Command) Example Date Show Display Point 6 (SEL control equation) OGIC DP6 = DP6 Label 1 (16 characters) (Enter NA to Null) DP6_1 DP6 Label 0 (16 characters) (Enter NA to Null)
  • Page 264 SEL-387E Relay Settings Sheet Page 22 of 27 Global Settings (SET G Command) Example Date Show Display Point 14 (SEL control equation) OGIC DP14 = DP14 Label 1 (16 characters) (Enter NA to Null) DP14_1 DP14 Label 0 (16 characters) (Enter NA to Null)
  • Page 265 SEL-387E Relay Settings Sheet Page 23 of 27 Global Settings (SET G Command) Example Date Local Bit LB6 Name (14 characters) (Enter NA to Null) NLB6 Clear Local Bit LB6 Label (7 characters) (Enter NA to Null) CLB6 Set Local Bit LB6 Label (7 characters) (Enter NA to Null)
  • Page 266 SEL-387E Relay Settings Sheet Page 24 of 27 Global Settings (SET G Command) Example Date Clear Local Bit LB14 Label (7 characters) (Enter NA to Null) CLB14 Set Local Bit LB14 Label (7 characters) (Enter NA to Null) SLB14 Pulse Local Bit LB14 Label (7 characters) (Enter NA to Null)
  • Page 267 SEL-387E Relay Settings Sheet Page 25 of 27 Sequential Events Recorder Settings Date (SET R Command) Example RIGGER ONDITIONS Trigger SER (24 Relay Word bits per SERn equation, 96 total) SER1 IN101 IN102 IN103 IN104 IN105 IN106 SER2 OUT101 OUT102 OUT103 OUT104 OUT105 OUT106 OUT107...
  • Page 268 SEL-387E Relay Settings Sheet Page 26 of 27 Port Settings (SET P Command) Example Date Note: RTSCTS setting does not appear if PROTO=LMD or DNP. PREFIX, ADDR, and SETTLE do not appear if PROTO=SEL or DNP. See Appendix C: SEL Distributed Port Switch Protocol (LMD) for details on LMD protocol and see Appendix G: Distributed Network Protocol (DNP) 3.00 for details on DNP protocol.
  • Page 269 SEL-387E Relay Settings Sheet Page 27 of 27 Port Settings (SET P Command) Example Date 3 (SET P 3) R , EIA-232 ANEL Port Protocol (SEL, LMD, DNP) PROTO LMD Prefix (@, #, $, %, &) PREFIX LMD Address (1–99) ADDR LMD Settling Time (0–30 seconds)
  • Page 271 Port Identification......................... 7-1 Cables ........................... 7-2 SEL-387E Relay to Computer ..................7-4 SEL-387E Relay to Modem..................7-4 SEL-387E Relay to SEL-2020 or SEL-2030..............7-5 Communications Protocol ......................7-6 Hardware Protocol........................ 7-6 Software Protocol ......................... 7-7 SEL ASCII Protocol ..................... 7-7 SEL Distributed Port Switch Protocol (LMD) .............
  • Page 272 Table 7.5: Commands With Alarm Conditions................... 7-35 Table 7.6: Main Board Jumpers ......................7-35 FIGURES Figure 7.1: SEL-387E Relay Serial Port Connectors ................7-2 Figure 7.2: Access Level Relationships....................7-13 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 273: Serial Port Communications And Commands

    COMMANDS NTRODUCTION The SEL-387E Relay is equipped with four serial ports: one EIA-232 port on the front, two EIA-232 ports on the rear, and one EIA-485 port on the rear. Establish communication by connecting a terminal to one of the serial ports with the appropriate cable. Connect computers, modems, protocol converters, printers, an SEL-2020 or an SEL-2030, an SEL-2885, a SCADA serial port, and/or RTUs for local or remote communications.

  • Page 274: Cables

    Cables Connect the SEL-387E Relay to another device using the appropriate cable. The pin definitions for Ports 1, 2, 3, and 4 are given on the relay rear panel and detailed in Table 7.1. A drawing of the 9-pin port connector and pin definitions appears in Figure 7.1.
  • Page 275 * The 5 Vdc serial port jumper must be installed to power the modem using C220. See Section 2: Installation. For example, to connect the SEL-387E Relay Ports 2, 3, or 4 to the 9-pin male connector on a laptop, order cable number C234A, and specify the length needed. To connect the SEL-387E Relay Port 2 to the SEL-2020 Communications Processor that supplies the communication link and the time synchronization signal, order cable number C273A, and specify the length needed.

  • Page 276: Sel-387E Relay To Computer

    SEL-387E Relay to Computer Cable C234A SEL-387E Relay *DTE Device 9-Pin Male 9-Pin Female “D” Subconnector “D” Subconnector Cable C227A SEL-387E Relay *DTE Device 9-Pin Male 25-Pin Female “D” Subconnector “D” Subconnector 20 DTR SEL-387E Relay to Modem Cable C222...

  • Page 277: Sel-387E Relay To Sel-2020 Or Sel-2030

    “D” Subconnector “D” Subconnector TXD (IN) 20 DTR (IN) RXD (OUT) CD (OUT) +5 VDC 10 PWR (IN) SEL-387E Relay to SEL-2020 or SEL-2030 Cable C272A SEL-2020 or SEL-2030 SEL-387E Relay 9-Pin Male 9-Pin Male “D” Subconnector “D” Subconnector Cable C273A...

  • Page 278: Communications Protocol

    OMMUNICATIONS ROTOCOL This section explains the serial port communications protocol used by the SEL-387E Relay. You set and operate the SEL-387E Relay via the serial communications ports. Note: In this document, commands you type appear in bold/upper case: STATUS. Keys you press appear in bold/upper case/brackets: <ENTER>.

  • Page 279: Software Protocol

    The CAN character (ASCII hex 18) aborts a pending transmission. This is useful in terminating an unwanted transmission. Date Code 20020129 Serial Port Communications and Commands SEL-387E Instruction Manual...

  • Page 280: Sel Distributed Port Switch Protocol (Lmd)

    SEL Unsolicited Sequential Events Recorder (SER) Protocol provides SER events to an automated data collection system. SEL Unsolicited SER Protocol is available on any serial port. The protocol is described in Appendix F: Unsolicited SER Protocol. Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 281: Sel Ascii Protocol Details

    STATION A SEL-387E Setting Group Change Message The SEL-387E Relay has six different setting groups for the SET settings. The active group is ® selected by the SS1 through SS6 SEL control equation variable bits, or by the GRO n OGIC serial port command, or the front-panel GROUP pushbutton.

  • Page 282: Event Summary Message

    Commands can be issued to the relay via the serial port to view metering values, change relay settings, etc. The available ASCII serial port commands are listed in Figure 7.2 and summarized 7-10 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 283: Access Level 0

    Section 12: SEL-387E Relay Command Summary. A multilevel password system provides security against unauthorized access. This access scheme allows you to give personnel access to only those functions they require. The relay supports four access levels. Each level has an associated screen prompt and password.

  • Page 284: Access Level 2

    Access Level 2 for viewing relay information, controlling the breaker, and changing settings. Firmware upgrades to Flash memory (see Appendix B: SEL-300 Series Relays Firmware Upgrade Instructions) are also performed from this level. 7-12 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...
  • Page 285 TARGET F TARGET R TARGET R TARGET R TIME TIME TIME TRIGGER TRIGGER TRIGGER QUIT QUIT QUIT QUIT ACCESS LEVEL 0 ACCESS ACCESS ACCESS Figure 7.2: Access Level Relationships Date Code 20020129 Serial Port Communications and Commands 7-13 SEL-387E Instruction Manual...

  • Page 286: Command Definitions

    Level 2 to change passwords. Install main board jumper JMP6A to disable password protection. The following display indicates successful access to Level 1: =ACC<ENTER> Password: ? @@@@@<ENTER> XFMR 1 Date: MM/DD/YY Time: HH:MM:SS.SSS STATION A Level 1 => 7-14 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...
  • Page 287 12345 IBW1= 12345 ICW3= 12345 kA(pri) Percent Wear: POLE1= 123 POLE2= 123 POLE3= LAST BREAKER MONITOR RESET FOR Bkr1: MM/DD/YY HH:MM:SS.SSS Bkr2: MM/DD/YY HH:MM:SS.SSS Bkr3: MM/DD/YY HH:MM:SS.SSS =>> Date Code 20020129 Serial Port Communications and Commands 7-15 SEL-387E Instruction Manual...
  • Page 288 Refer to Appendix E: Compressed ASCII Commands for a complete description of the command, as well as additional Compressed ASCII commands: CAS, CBR, CHI, CST, and CTA. 7-16 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...
  • Page 289 =>>COP 1 3<ENTER> COPY 1 to 3 Are you sure (Y/N) ? Y<ENTER> Please wait... Settings copied =>> Date Code 20020129 Serial Port Communications and Commands 7-17 SEL-387E Instruction Manual...
  • Page 290 TGR setting (under SET G) before the new settings are enabled. =>>GRO<ENTER> Active Group = N =>>GRO 2<ENTER> Change to Group 2 Are you sure (Y/N) ? Y<ENTER> =>> 7-18 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 291: His (History Of Events)

    The date and time are saved (time to the nearest millisecond) and referenced to the trigger row of data in the Event Report. An example of the display appears below. In this example seven events have occurred since the history was last cleared: Date Code 20020129 Serial Port Communications and Commands 7-19 SEL-387E Instruction Manual...

  • Page 292: His C (Clear History And Events)

    Levels 1 and B. If the number or type of interface boards has changed since last power up, INI will confirm from Access Level 2 that the interface boards present are correct. 7-20 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 293: Iri (Irig-B Synchronization)

    Displays differential current metering data, in multiples of MET E Display energy metering data (see MET E below) MET H Displays harmonic spectrum of currents and voltages (see MET H below) Date Code 20020129 Serial Port Communications and Commands 7-21 SEL-387E Instruction Manual...

  • Page 294: Ope N (Open)

    If both questions are answered Y<ENTER>, the breaker will be opened, an automatic message summarizing the trip will be sent, an Event Report will be created, and the TRIP LED on the 7-22 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 295: Pas (Passwords)

    Designate which access level password to change with the n = 1, B, or 2. The new password designated by newpas can be up to six characters. The following example changes the level one password to Ot3579. The passwords are case sensitive. Date Code 20020129 Serial Port Communications and Commands 7-23 SEL-387E Instruction Manual...

  • Page 296: Pul N (Pulse)

    This could prevent a trip or other critical output from being issued during the specified PUL time interval. =>>PUL OUT107 3<ENTER> Pulse contact OUT107 for 3 second(s) (Y/N) ? Y<ENTER> Are you sure (Y/N) ? Y<ENTER> =>> 7-24 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 297: Qui (Quit)

    The following is an example of the SER report. See Section 9: Event Reports and Sequential Events Reporting for a complete description of the report. Date Code 20020129 Serial Port Communications and Commands 7-25 SEL-387E Instruction Manual...

  • Page 298: Note: Clear The Ser Buffer With Care

    If a setting is hidden because that section of the settings is turned OFF, you cannot jump to that setting. TERSE is very useful when making small changes to the settings. For example, the following procedure is recommended when making a change to one setting: 7-26 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...
  • Page 299 The relay checks each entry to ensure that it is within the allowable input range. If it is not, an “Out of Range” message is generated, and the relay prompts for the setting again. Date Code 20020129 Serial Port Communications and Commands 7-27 SEL-387E Instruction Manual...

  • Page 300: Set G (Edit Global Settings)

    The two parameters are optional and perform the following functions: œ n specifies the serial port number (1, 2, 3, or 4). Default is the port issuing the command. 7-28 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 301: Set R (Edit Ser Settings)

    The command will function properly if just TE is entered, instead of the full word. The SET R procedure works just like the SET procedure. Table 7.4 lists the editing keys that you can use with the SET command. Date Code 20020129 Serial Port Communications and Commands 7-29 SEL-387E Instruction Manual...

  • Page 302: Note: Make Sequential Events Recorder (Ser) Settings With Care

    Display Point variables. The syntax of the SHO G command follows: SHO G Setting<ENTER> œ Setting specifies the setting name with which to begin. The default is the first setting. 7-30 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 303: Sho P (Show Port Settings)

    STA command whenever the self-test software enters a warning or failure state. You may repeat the STA command by appending a number as a repeat count parameter. Type STA 4<ENTER> to view the status information four times. Date Code 20020129 Serial Port Communications and Commands 7-31 SEL-387E Instruction Manual...

  • Page 304: Tar (Show Relay Word Targets On Screen)

    TAR 0 command is executed, or the TAR R command is executed. The TAR command does not remap the front-panel LEDs. See the TAR F command. The following examples demonstrate the TAR command: 7-32 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...
  • Page 305 TAR R command is executed. The front-panel LEDs remain remapped until the front panel times out, the TAR R command is executed, or the <TARGET RESET> button is pushed. Date Code 20020129 Serial Port Communications and Commands 7-33 SEL-387E Instruction Manual...

  • Page 306: Tar R (Reset Targets)

    (e.g., testing or commissioning). The event type is recorded as TRIG any time the TRI command is issued. 7-34 Serial Port Communications and Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 307: Main Board

    =>> Alarm Conditions The SEL-387E Relay asserts the ALARM output during power up until all self-tests pass and whenever a diagnostic test fails. In addition to these, the ALARM output pulses for one second with the commands and conditions shown in Table 7.5.

  • Page 309: Bre (Breaker Report)

    SEL-387E RELAY COMMAND SUMMARY CCESS EVEL OMMANDS $FFHVV The only thing that can be done at Access Level 0 is to go to Access Level 1. The /HYHO  screen prompt is: = &RPPDQGV Enter Access Level 1. If the main board password jumper (JMP6A) is not in place, the relay prompts for the entry of the Access Level 1 password in order to enter Access Level 1.
  • Page 310 Show port settings and identification of port to which user is connected. SHO P n Show port settings for Port n (n =1, 2, 3, 4). SHO R Show Sequential Events Recorder (SER) settings. Show relay self-test status. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...

  • Page 311: Bre W N (Breaker Wear Pre-Set)

    Show differential element 1 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. EVE DIF2 n Show differential element 2 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. Date Code 20020129 SEL-387E Relay Command Summary SEL-387E Instruction Manual...
  • Page 312 Show port settings and identification of port to which user is connected. SHO P n Show port settings for Port n (n =1, 2, 3, 4). SHO R Show Sequential Events Recorder (SER) settings. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...
  • Page 313 Append F to display targets on the front-panel second row of LEDs. Show or set time (24-hour time). Show time presently in the relay by entering just TIM. Example time 22:47:36 is entered with command TIM 22:47:36. Trigger an event report. Date Code 20020129 SEL-387E Relay Command Summary SEL-387E Instruction Manual...

  • Page 314: Con N (Control Rbn)

    Show differential element 1 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. EVE DIF2 n Show differential element 2 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...
  • Page 315 SER n Show the latest n rows in the Sequential Events Recorder (SER) event report. SER m n Show rows m through n in the Sequential Events Recorder (SER) event report. Date Code 20020129 SEL-387E Relay Command Summary SEL-387E Instruction Manual...
  • Page 316 Append F to display targets on the front panel, second row of LEDs. Show or set time (24-hour time). Show time presently in the relay by entering just TIM. Example time 22:47:36 is entered with command TIM 22:47:36. Trigger an event report. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...
  • Page 317 Local Control State Retained When Relay De-energized ........8-15 Pulse Output Contacts..................8-15 GROUP ........................8-16 Secondary Function Review....................8-16 CANCEL........................8-17 SELECT........................8-17 Arrows ........................8-17 EXIT ........................... 8-17 Pushbutton / Serial Port Equivalents .................. 8-17 Date Code 20020129 Front-Panel Interface SEL-387E Instruction Manual...
  • Page 318 Table 8.3: Front-Panel Button Serial Port Equivalents ............... 8-18 FIGURES Figure 8.1: SEL-387E Relay Front-Panel User Interface............... 8-1 Figure 8.2: Local Control Switch Configured as an ON/OFF Switch..........8-12 Figure 8.3: Local Control Switch Configured as an OFF/MOMENTARY Switch ......8-12 Figure 8.4: Local Control Switch Configured as an ON/OFF/MOMENTARY Switch ......

  • Page 319: Front-Panel Interface

    RONT ANEL PERATION A close-up view of the user interface portion of the SEL-387E Relay front panel is shown in Figure 8.1. It includes a two-line, 16-character LCD; 16 LED target indicators; and eight pushbuttons for local communication. W3 V...

  • Page 320: Target Leds

    When prompted for a password, enter the BAC or 2AC password, depending on the requirements of the command. All commands are available using the 2AC password. The front-panel request for password shows a display of six characters, shown initially as ABCDEF, with the A Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 321: Pushbuttons

    The first METER menu prompts the user to select the W1, W2, W3, V, CMBO, DIF, DC, F, PWR, or ENG metering display. W1 to W3 are winding displays, V is the voltage input display, Date Code 20020129 Front-Panel Interface SEL-387E Instruction Manual...

  • Page 322: Windings (W1, W2, W3)

    If DIF is selected, the relay scrolls through the instantaneous multiple of tap values for Operate, Restraint, and harmonic quantities. Battery Monitor (DC) If DC is selected, the relay displays “Station Battery” and “VDC= nnn.n.” Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 323: Frequency (F)

    STA command. When <STATUS> is pushed, the initial display shows: STATUS: [OK/WARN/FAIL] FID=SEL-387E-R10 (e.g., the first 12 characters of the FID string) The STATUS line shows the worst state of the several parameters examined. The right/left arrow keys can be used to view the rest of the FID string.

  • Page 324: Other

    MM/DD/YY fields and the up/down arrows to scroll to the number selected for the field. When the date is shown correctly, push <SELECT> to enter it. Push <CANCEL> to return to the OTHER main menu. Push <EXIT> to return to the default display. Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 325: Lcd

    <SELECT>. Yes will reset the accumulators and exit the command. No will abort the command and return to the OTHER main menu; or, simply push <CANCEL> to return to the OTHER main menu. Push <EXIT> to return to the default display. Date Code 20020129 Front-Panel Interface SEL-387E Instruction Manual...

  • Page 326: Tar

    This command is roughly equivalent to the SHO G and SET G serial port commands. When GLOBAL is selected, a menu appears for selecting whether to Set or Show the settings. If Set, a password entry screen appears, if password protection is in force. Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 327: Group

    The next menus to appear are to allow the user to enter a specific section of the GROUP settings, rather than having to scroll through all GROUP settings. The sections are CONFIG. SETTINGS, GENERAL DATA, DIFF ELEMS, WINDING n ELEMS, COMBINED Date Code 20020129 Front-Panel Interface SEL-387E Instruction Manual...

  • Page 328: Password

    The next display asks the level of access for which you are changing the password. These are ACC, BAC, and 2AC, corresponding to the Level 1, Level B, and Level 2 serial port access request commands. Use the right/left arrow keys and <SELECT> to choose. 8-10 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 329: Port

    <CANCEL> may be used to return to an earlier menu. <EXIT> will abort the PORT command and return to the default display. CNTRL Use local control to enable/disable schemes, trip/close breakers, and so on, via the front panel. Date Code 20020129 Front-Panel Interface 8-11 SEL-387E Instruction Manual...

  • Page 330: Local Bits

    “Clear” Local bit LBn logical 0 MOMENTARY PLBn “Pulse” Local bit LBn logical 1 for one processing interval Note that the first setting in Table 8.1 (NLBn) is the overall switch name setting. 8-12 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 331: Factory Settings Examples

    Press CNTRL for Local Control Press the CNTRL pushbutton, and the first set local control switch displays (shown here with factory default settings). Date Code 20020129 Front-Panel Interface 8-13 SEL-387E Instruction Manual...

  • Page 332: Operate Local Control (With Factory Settings)

    Scroll left with the left arrow button and then select “Yes.” The display then shows the new local control switch position. Relay MANUAL TRIP Word RETURN MANUAL TRIP 1 (logical 0) Logical 1 Position: TRIP TRIP 8-14 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 333: Local Control State Retained When Relay De-Energized

    OUT107 and ALARM. Use the up/down arrow keys and <SELECT> to choose. The display will follow with a Yes/No verification request. Again, use the up/down arrow keys and <SELECT> to choose. Date Code 20020129 Front-Panel Interface 8-15 SEL-387E Instruction Manual...

  • Page 334: Group

    The secondary button functions come into effect as soon as one of the buttons for the above primary functions has been pushed. These secondary functions remain in effect until a primary function has been completed, aborted or exited, and the display has returned to the default 8-16 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...

  • Page 335: Cancel

    <GROUP> button. Pushbutton / Serial Port Equivalents Table 8.3 summarizes the pushbutton functions and their approximate equivalents in serial port commands. Date Code 20020129 Front-Panel Interface 8-17 SEL-387E Instruction Manual...

  • Page 336: Programmable Leda, Ledb, Ledc

    Table 8.3: Front-Panel Button Serial Port Equivalents Button Similar SEL-387E Serial Port Commands TARGET RESET / LAMP TEST TAR R METER MET, MET (D, DIF, P, SEC, RD, RP) EVENTS STATUS OTHER DAT, TIM, TAR F, BRE, BRE R, RES...

  • Page 337: Traditional Indicating Panel Lights Replaced With Rotating Default Display

    Traditional Indicating Panel Lights Replaced with Rotating Default Display The indicating panel lights are not needed if the rotating default display feature in the SEL-387E Relay is used. There are 16 of these default displays available in the SEL-387E Relay. Referred to as Display Points, each default display has available two complementary screens (e.g., BREAKER...

  • Page 338: Circuit Breaker Open

    The optoisolated input IN102 is de-energized when the 52a circuit breaker auxiliary contact is open, resulting in: DP2 = IN102 = logical 0 Corresponding text setting DP2_0 is not set (it is “blank”), so no message is displayed on the front-panel display. 8-20 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...
  • Page 339 1234 mmddyy hh: mm: ss I1F2 I2F2 I3F2 12.3 12.3 12.3 Last Reset From mmddyy hh: mm: ss I1F5 I2F5 I3F5 12.3 12.3 12.3 Figure 8.5: METER Menu and Display Structure Date Code 20020129 Front-Panel Interface 8-21 SEL-387E Instruction Manual...
  • Page 340 3V2WX= 123.12 kV VCWX= 123.1 VRWX= 123.12 kV (V,sec)= 123.12˚ 3V1WX= 123.1 (V,sec)= 123.12˚ 3V2WX= 123.1 (V,sec)= 123.12˚ VRWX= 123.1 (V,sec)= 123.12˚ Figure 8.6: METER Menu and Display Structure ( continued) 8-22 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...
  • Page 341 12 MVARh MVARhA OUT 12 MVARH MVARhB IN 12 MVARH MVARhB OUT 12 MVARH MVARhC IN 12 MVARH MVARhC OUT 12 MVARH Figure 8.7: METER Menu and Display Structure ( continued Date Code 20020129 Front-Panel Interface 8-23 SEL-387E Instruction Manual...
  • Page 342 Stored in Relay n W3 A 12.3 12.3 12.3 Where n = event number m = group number If secondary currents > 99.9, drop the decimal place. Note: Figure 8.8: EVENTS Display Structure 8-24 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...
  • Page 343 Reset Bkr W1 999ex 12345kA Yes No P3 999in 12345kA 999ex 12345kA %wear P1 [default display] 100 100 100 Last Reset From mmddyy hh:mm:ss Figure 8.9: OTHER / BKR Menu and Display Structure Date Code 20020129 Front-Panel Interface 8-25 SEL-387E Instruction Manual...
  • Page 344 ←→ ←→ Save Changes Save Changes Exit Changes Yes No Yes No Yes No ←→ ←→ Exit Changes Exit Changes Yes No Yes No Figure 8.10: SET Menu and Display Structure 8-26 Front-Panel Interface Date Code 20020129 SEL-387E Instruction Manual...
  • Page 345 Differential Event Report Element Columns ..............9-15 Table 9.7: Raw Winding Event Report Current Columns..............9-19 Table 9.8: Raw Winding Event Report Outputs and Inputs..............9-19 FIGURES Figure 9.1: Example Event Summary..................... 9-3 Date Code 20020129 Event Reports and Sequential Events Reporting SEL-387E Instruction Manual...
  • Page 346 Sampled Current Waveform ..................9-21 Figure 9.7: Derivation of Phasor RMS Current Values From Event Report Current Values ....9-22 Figure 9.8: Example SER Event Report ....................9-23 Event Reports and Sequential Events Reporting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 347: Eve (Event Reports)

    EPORTS Event Report Length (Settings LER and PRE) The SEL-387E Relay provides user-programmable event report length and pre-fault length. Event report length is set at 15, 29, or 60 cycles, using the Global setting LER. Pre-fault length ranges from 1 to (LER-1) cycles. Set the pre-fault length with the Global setting PRE. The LER and PRE settings are accessible either via the SET G serial port command, or via the SET/GLOBAL front-panel pushbuttons.

  • Page 348: Standard Event Report Triggering

    Rising-edge operators are especially useful in generating an event report at fault inception, then generating another event report later if a breaker trips on some time-delayed element. Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...

  • Page 349: Pulse And Trigger Commands

    29-, or 60-cycle event report, and the other information follows at the end. See Figure 9.2. The example event summary in Figure 9.1 corresponds to the full-length standard 15-cycle event report in Figure 9.2. Figure 9.1: Example Event Summary Date Code 20010521 Event Reports and Sequential Events Reporting SEL-387E Instruction Manual...

  • Page 350: Event Type

    The target field shows all front-panel targets that were illuminated at the end of the triggered event report. The targets include: TRIP, INST, 87-1, 87-2, 87-3, 24, 50/51, 81, A, B, C, N, W1, W2, and W3. Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...

  • Page 351: Winding Currents

    Display x samples per cycle (4 or 8); defaults to 4 if not listed. Display y cycles of data (1 to LER); defaults to LER if not listed. Date Code 20010521 Event Reports and Sequential Events Reporting SEL-387E Instruction Manual...
  • Page 352 Z01 to Z21. If the Analog Input Labels settings have been changed within the Global setting area, these will appear in the report as set. Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...
  • Page 353 Output contact OUT107 asserted Output contact ALARM asserted Both OUT107 and ALARM asserted IN 12 Optoisolated input IN101 asserted Optoisolated input IN102 asserted Both IN101 and IN102 asserted Date Code 20010521 Event Reports and Sequential Events Reporting SEL-387E Instruction Manual...
  • Page 354 Refer to Figure 9.3 for an example digital event report. This example event report displays rows of information each quarter-cycle; it was retrieved with the EVE D<ENTER> command. Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...
  • Page 355 Event Summary currents. The ‘*’ character takes precedence over the ‘>’ character when both conditions occur for the same row. The following table summarizes the digital event report columns. Date Code 20010521 Event Reports and Sequential Events Reporting SEL-387E Instruction Manual...
  • Page 356 Timing to reset after 51N1T assertion (51N1RS=N) 51N1R asserted 51Q1 asserted Wdg 1 51Q1T asserted Timing to reset (51Q1RS=Y) Timing to reset after 51Q1T assertion (51Q1RS=N) 51Q1R asserted 9-10 Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...
  • Page 357 59V1 picked up 59PP Level 1 phase-to-phase instantaneous overvoltage element picked up Level 2 phase-to-phase instantaneous overvoltage element picked up Both phase-to-phase instantaneous overvoltage elements picked up Date Code 20010521 Event Reports and Sequential Events Reporting 9-11 SEL-387E Instruction Manual...
  • Page 358 DC3 asserted DC4 asserted DC3 and DC4 asserted PDEM1 asserted PDEM2 asserted PDEM1 and PDEM2 asserted PDEM3 asserted NDEM1 asserted NDEM2 asserted NDEM1 and NDEM2 asserted NDEM3 asserted 9-12 Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...
  • Page 359 The general command format is: EVE DIFz [n, Sx, Ly[-[w]]] (parameters in [ ] are optional) where: Display results for differential element z (z =1, 2, or 3). Date Code 20010521 Event Reports and Sequential Events Reporting 9-13 SEL-387E Instruction Manual...
  • Page 360 Event Summary currents. The ‘*’ character takes precedence over the ‘>’ character when both conditions occur for the same row. The following table summarizes the event report current columns. 9-14 Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...
  • Page 361 2HB1 and 5HB1 asserted Dif El 2HB2 asserted 5HB2 asserted HB 2 2HB2 and 5HB2 asserted 2HB3 asserted Dif El 5HB3 asserted HB 3 2HB3 and 5HB3 asserted Date Code 20010521 Event Reports and Sequential Events Reporting 9-15 SEL-387E Instruction Manual...
  • Page 362 Latch Bit 1 and Latch Bit 2 Latched Set 2 Latch Bit 3 Latched LT 34 Latch Bit 4 Latched Latch Bit 3 and Latch Bit 4 Latched 9-16 Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...

  • Page 363: Event R (Raw Winding Event Report)

    The SEL-387E Relay samples the analog ac input currents 64 times per power system cycle. The relay filters the samples to remove transient signals.
  • Page 364 The raw event report always shows 1.5 cycles of pretrigger data, in this case six samples instead of four. Figure 9.5: Example Raw Winding Event Report 9-18 Event Reports and Sequential Events Reporting Date Code 20020129 SEL-387E Instruction Manual...
  • Page 365 Output contact OUT103 asserted Output contact OUT104 asserted Both OUT103 and OUT104 asserted OUT 56 Output contact OUT105 asserted Output contact OUT106 asserted Both OUT105 and OUT106 asserted Date Code 20020129 Event Reports and Sequential Events Reporting 9-19 SEL-387E Instruction Manual...

  • Page 366: Compressed Ascii Event Reports

    Both IN105 and IN106 asserted Compressed ASCII Event Reports The SEL-387E Relay provides Compressed ASCII event reports to facilitate event report storage and display. The SEL-2020 or SEL-2030 Communications Processor and the SEL-5601 Analytic Assistant software take advantage of the Compressed ASCII format. Use the EVE C command or the CEVENT command to display Compressed ASCII event reports.
  • Page 367 2748 A, RMS. The true RMS value is shown as IA times 1/sqrt(2) = 3887 • 0.707 = 2748 A. peak Date Code 20010521 Event Reports and Sequential Events Reporting 9-21 SEL-387E Instruction Manual...
  • Page 368 The present sample (IA = 2380 A) is a real RMS current value that relates to the phasor RMS current value: 2749 A • cos(-30.0•) = 2380 A 9-22 Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...

  • Page 369: Sequential Events Recorder (Ser) Event Report

    “ALIASn =” setting, list the bit name, then a space, then the desired name, which can contain any combination of 15 letters, numbers, and underscores. For example, one setting might be Date Code 20010521 Event Reports and Sequential Events Reporting 9-23 SEL-387E Instruction Manual...

  • Page 370: Making Ser Event Report Trigger Settings

    (row 17) at the beginning (top) of the report and the latest row (row 1) at the end (bottom) of the report. Chronological progression through the report is down the page and in descending row number. 9-24 Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...
  • Page 371 If the requested SER event report rows do not exist, the relay responds: Invalid Record If there are no rows in the SER event report buffer, the relay responds: No SER data Date Code 20010521 Event Reports and Sequential Events Reporting 9-25 SEL-387E Instruction Manual...

  • Page 372: Clearing Ser Event Report Buffer

    Automated clearing of the SER buffer should be limited to reduce the possibility of wearing out the nonvolatile memory. Limit automated SER C commands to once per week or less. 9-26 Event Reports and Sequential Events Reporting Date Code 20010521 SEL-387E Instruction Manual...
  • Page 373 Second-Harmonic Blocking..................10-28 Fifth-Harmonic Blocking..................10-29 Harmonic Restraint....................10-30 Over-/Undervoltage Elements ..................10-32 Frequency Elements ......................10-36 Volts/Hertz Elements......................10-37 Time-Code Input (IRIG-B)....................10-42 Commissioning Testing......................10-42 Maintenance Testing ........................ 10-43 Date Code 20020129 Testing and Troubleshooting SEL-387E Instruction Manual...
  • Page 374 Figure 10.5: Voltage Test Connection....................10-10 Figure 10.6: Test Connections for Two Single-Current Test Sources ..........10-12 Figure 10.7: Percentage Restraint Differential Characteristic.............. 10-21 Figure 10.8: Test Connections for Parallel Current Sources ..............10-29 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 375: Section 10: Testing And Troubleshooting

    SECTION 10: TESTING AND TROUBLESHOOTING NTRODUCTION Use this section for determining and establishing test routines for the SEL-387E Relay. This section includes discussions on testing philosophies, methods, and tools. It also shows example test procedures for metering, overcurrent elements, differential elements, and harmonic blocking functions.

  • Page 376: Low-Level Test Interface

    Communications and Commands. Low-Level Test Interface The SEL-387E Relay has a low-level test interface between the calibrated input module and the separately calibrated processing module. You may test the relay in either of two ways: by applying ac current and voltage signals to the relay inputs or by applying low magnitude ac voltage signals to the low-level test interface.

  • Page 377: Target Led Illumination

    ALIASn settings, in which case the ALIAS will appear in the report. Clear the SER report with the SER C command. Date Code 20020129 Testing and Troubleshooting 10-3 SEL-387E Instruction Manual...

  • Page 378: Acceptance Testing

    Method: Inspect the instrument for physical damage such as dents or rattles. Step 2. Purpose: Verify requirements for relay logic inputs, control power voltage level, and voltage and current inputs. 10-4 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 379: Power Supply

    Purpose: Verify the communications interface setup. Method: Connect a computer terminal to Ports 2, 3, or 4 of the relay. Communication Parameters: 2400 Baud, 8 Data Bits, 1 Stop Bit, N Parity Date Code 20020129 Testing and Troubleshooting 10-5 SEL-387E Instruction Manual...
  • Page 380 Purpose: View factory settings entered before shipment. Method: The relay is shipped with factory settings; type SHO <ENTER> to view the settings. Section 6: Settings the Relay includes a complete description of the settings. 10-6 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 381: Outputs

     Apply the appropriate control voltage to each input and make sure that the corresponding target LED turns on.  Repeat this step for each input. Use the TARGET F (TAR F) command to display the appropriate output elements. Date Code 20020129 Testing and Troubleshooting 10-7 SEL-387E Instruction Manual...

  • Page 382: Metering

    If IR equals three times the applied current, then all three phases have the same angle. If 3I2 equals three times the applied current, then the phase rotation is reversed. Turn the current sources off. 10-8 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...
  • Page 383 Figure 10.3: Test Connections for Balanced Load With Three-Phase Current Sources Figure 10.4: Test Connections for Balanced Load With Two-Phase Current Sources Date Code 20020129 Testing and Troubleshooting 10-9 SEL-387E Instruction Manual...

  • Page 384: Voltage Metering

    If VRWx equals three times the applied voltage, then all three phases have the same angle. If 3V2Wx equals three times the applied voltage, then the phase rotation is reversed. 10-10 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 385: Frequency Metering

    Instantaneous Overcurrent Elements Note: This example tests the Winding 1 50P11 phase overcurrent element. Use the same procedure to test all instantaneous overcurrent elements for each winding. Date Code 20020129 Testing and Troubleshooting 10-11 SEL-387E Instruction Manual...
  • Page 386 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Step 2. Method: Execute the TARGET command (i.e., TAR F 50P11<ENTER>). The SEL-387E Relay now displays the state of several Winding 1 overcurrent elements on the bottom row of front-panel LEDs. Step 3.
  • Page 387 Section 3: Differential, Restricted Earth Fault, Overcurrent, Voltage, and Frequency Elements. TD is the time-dial setting (i.e., 51P1TD), and M is the applied multiple of pickup current. Date Code 20020129 Testing and Troubleshooting 10-13 SEL-387E Instruction Manual...
  • Page 388 To reset all time-overcurrent elements before running additional tests, enter the RESET <ENTER> command from the relay serial port. 10-14 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 389: Phase Overcurrent Elements

    51Q3T Phase Overcurrent Elements The SEL-387E Relay has many phase overcurrent elements. They all operate based on a comparison between the phase current directly applied to the winding inputs and the phase overcurrent setting. The elements that have a P as the third character of the element name operate when any one of the three-phase currents exceeds the phase current setting threshold.

  • Page 390: Negative-Sequence Overcurrent Elements

    These tests were outlined earlier in this section. Residual Overcurrent Elements The SEL-387E Relay has many residual overcurrent elements. They all operate based on a comparison between a residual calculation of the three-phase inputs and the residual overcurrent setting. The residual calculation that is performed on the three-phase inputs is as follows:...

  • Page 391: Combined Overcurrent Elements

    Reexecute the same overcurrent test and verify that it does not operate. Combined Overcurrent Elements The SEL-387E Relay has one set of combined overcurrent elements. Set EOCC = Y to enable this set, which uses the sum of currents from Windings 1 and 2. The set has a phase overcurrent and a residual overcurrent element, both of which are inverse-time elements using the same curves as the similar Winding 51 elements.
  • Page 392 Execute the TAR F 22 command. Relay Word bits 51PC1 and 51PC1T will appear in the second row of LEDs, in the A and B positions, during the tests. Before the test, LED C should be lit, representing bit 51PC1R (reset). 10-18 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 393: Restricted Earth Fault (Ref) Function

    CTRmax = CTR3, so the ratio CTRmax/CTR3 = 1. Therefore, the 50GP setting can remain at 0.5A. If the ratio CTRmax/CTR3 is greater than 2.0, set 50GP equal to 0.25 A times the actual ratio of CTRmax/CTR3. Date Code 20020129 Testing and Troubleshooting 10-19 SEL-387E Instruction Manual...
  • Page 394 REFP are all in this row. With the currents applied as above, 50G3 should be 1, and REFP should remain at 0. Bit 32IR should be 1, indicating an external (reverse) fault. Bit 32IF should be 0. 10-20 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 395: Differential

    IAW3 current.) SER C clears the SER records. Differential The SEL-387E Relay has several components to its differential element. Figure 10.7 gives a representation of the differential characteristic and the plot of each test. Each test only uses Winding 1 and 2 inputs.

  • Page 396: U87P Unrestrained Differential Element

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 87U<ENTER>). The SEL-387E Relay now displays the state of several differential elements in the second row of the front-panel LEDs. The 87U bit is the fourth from the left.

  • Page 397: O87P Differential Element Pickup

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Step 3. Method: Execute the TARGET command (i.e., TAR F 87R<ENTER>). The SEL-387E Relay now displays the state of several differential elements in the second row of the front-panel LEDs. The 87R bit is the right-most LED.

  • Page 398: Slp1 Restrained Differential Threshold

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 87R<ENTER>). The SEL-387E Relay now displays the state of several differential elements in the second row of the front-panel LEDs. The 87R bit is the right-most LED.
  • Page 399 180 degrees. Slowly decrease the magnitude of IAW2 until the 87R element asserts. Note the magnitude of the current applied. It should equal the value calculated in step 4 ±5% ±0.02 I Date Code 20020129 Testing and Troubleshooting 10-25 SEL-387E Instruction Manual...

  • Page 400: Slp2 Restrained Differential Threshold

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 87R<ENTER>). The SEL-387E Relay now displays the state of several differential elements in the second row of the front-panel LEDs. The 87R bit is the right-most LED.
  • Page 401 Purpose: Calculate the initial current for Winding 2 for this test. Method: Calculate the Winding 2 initial current by multiplying the Winding 2 expected current calculated above by 110 percent. IAW2 (initial) = 1.1•IAW2 (from Step 4) Date Code 20020129 Testing and Troubleshooting 10-27 SEL-387E Instruction Manual...

  • Page 402: Second-Harmonic Blocking

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 87R<ENTER>). The SEL-387E Relay now displays the state of several differential elements in the second row of the front-panel LEDs. The 87R bit is the right-most LED.

  • Page 403: Fifth-Harmonic Blocking

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 87R<ENTER>). The SEL-387E Relay now displays the state of several differential elements in the second row of the front-panel LEDs. The 87R bit is the right-most LED.

  • Page 404: Harmonic Restraint

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 87R<ENTER>). The SEL-387E Relay now displays the state of several differential elements in the second row of the front-panel LEDs. The 87R bit is the right-most LED.
  • Page 405 For values on the second slope, use the following equation: 3&7 Ë Û Ë Û KDUPRQLF ‡ Ì Ü Ì Ü Í Ý Í Ý where: PCT2 = second-harmonic setting in percent Date Code 20020129 Testing and Troubleshooting 10-31 SEL-387E Instruction Manual...

  • Page 406: Over-/Undervoltage Elements

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 59P1<ENTER>). The SEL-387E Relay now displays the state of the overvoltage elements on the bottom row of front-panel LEDs. Step 4.
  • Page 407 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 59PP1<ENTER>). The SEL-387E Relay now displays the state of the overvoltage elements on the bottom row of front-panel LEDs. Step 8.
  • Page 408 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 59Q<ENTER>). The SEL-387E Relay now displays the state of the overvoltage elements on the bottom row of front-panel LEDs. Step 15.
  • Page 409 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 27PP1<ENTER>). The SEL-387E Relay now displays the state of the undervoltage elements on the bottom row of front-panel LEDs. Step 8.

  • Page 410: Frequency Elements

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 81D1<ENTER>). The SEL-387E Relay now displays the state of the frequency elements on the bottom row of front-panel LEDs. Step 4.

  • Page 411: Volts/Hertz Elements

    Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 24D1<ENTER>). The SEL-387E Relay now displays the state of the volts/hertz elements on the bottom row of front-panel LEDs. Step 4.
  • Page 412 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Step 6. Method: Execute the TARGET command (i.e., TAR F 24DT<ENTER>). The SEL-387E Relay now displays the state of the volts/hertz elements on the bottom row of front-panel LEDs. Step 7.
  • Page 413 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 24C2T<ENTER>). The SEL-387E Relay now displays the state of the volts/hertz elements on the bottom row of front-panel LEDs. Step 13.
  • Page 414 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 24C2T<ENTER>). The SEL-387E Relay now displays the state of the volts/hertz elements on the bottom row of front-panel LEDs. Step 19.
  • Page 415 Purpose: Display the appropriate Relay Word bit on the front-panel LEDs. Method: Execute the TARGET command (i.e., TAR F 24C2T<ENTER>). The SEL-387E Relay now displays the state of the volts/hertz elements on the bottom row of front-panel LEDs. Step 23.

  • Page 416: Time-Code Input (Irig-B)

    At commissioning time, use the relay METER DIF command to record the measured operate and restraint values for through-load currents. Use the PULSE command to verify relay output contact operation. 10-42 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 417: Maintenance Testing

    Use the SEL-387E Relay Commissioning Test Worksheet, located at the end of this section, to verify correct CT connections and settings when placing the relay in service. The worksheet shows how using software commands or the front-panel display can replace the need for the traditional phase angle meter and ammeter.

  • Page 418: Relay Troubleshooting

    4. System is attempting to transmit information but cannot because of handshake line conflict. Check communications cabling. 5. System is in the XOFF state, halting communications. Type <CTRL>Q to put system in XON state. 10-44 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 419: Relay Does Not Respond To Faults

    2. A/D converter failure. Self-Test Failure: +5 V REG 1. Regulated +5 V output out-of-tolerance. See STA (Status Report), Section 7: Serial Port Communications and Commands.. 2. A/D converter failure. Date Code 20020129 Testing and Troubleshooting 10-45 SEL-387E Instruction Manual...

  • Page 420: Self-Test Failure: +12 V Ps

    3. Loose ribbon cable between transformers and main board. Self-Test Failure: ROM 1. Memory failure. 2. Contact the factory. Self-Test Failure: RAM 1. Failure of static RAM IC. 2. Contact the factory. 10-46 Testing and Troubleshooting Date Code 20020129 SEL-387E Instruction Manual...

  • Page 421: Self-Test Failure: A/D Converter

    1. Record STA command and state of all outputs. 2. Contact the factory. Powering down the relay will reset the logic. Relay Calibration The SEL-387E Relay is factory calibrated. If you suspect that the relay is out of calibration, please contact the factory. ACTORY SSISTANCE We appreciate your interest in SEL products and services.
  • Page 423 TAP3 = Differential Settings O87P = SLP1 = SLP2 = IRS1 = U87P = Metered Load (Data taken from substation panel meters, not the SEL-387E Relay) ± Readings from meters Winding 1 Winding 2 Winding 3 Megawatts: MW1 = MW2 =...
  • Page 424 Commissioning Test Worksheet SEL-387E Relay Page 2 of 2 ONNECTION HECK Differential Connection (issue MET DIF<ENTER> to serial port or front panel) Note: System load conditions should be higher than 0.1 A secondary. 0.5 A secondary is recommended for the best results.
  • Page 425 Binary Message List ......................D-1 ASCII Configuration Message List ..................D-1 Message Definitions ........................D-2 A5C0 Relay Definition Block ..................... D-2 A5C1 Fast Meter Configuration Block................D-2 A5D1 Fast Meter Data Block....................D-5 Date Code 20020218 Appendices SEL-387E Instruction Manual...
  • Page 426 BNA Command ......................... D-10 SNS Message........................D-11 APPENDIX E: COMPRESSED ASCII COMMANDS ......E-1 Introduction ..........................E-1 CASCII Command – General Format ..................E-1 CASCII Command – SEL-387E Relay ..................E-2 CBREAKER Command .......................E-4 CEVENT Command........................E-5 CEVENT Winding Report (Default)..................E-6 CEVENT Differential Report....................E-6 CHISTORY Command ........................E-7...
  • Page 427 Introduction ........................G-17 Inputs ......................... G-17 Modem Support ......................G-19 Virtual Terminal ......................G-20 SEL-387E Relay DNP Port – SET P Settings Sheet ..............G-21 TABLES Table G.1: Data Access Methods ......................G-3 Table G.2: SEL-387E DNP Object Table ..................... G-6 Table G.3: SEL-387E-Wye/Delta DNP Data Map ................
  • Page 429 Part/Revision number in bold: FID=SEL-387E-R100-V0-Z . . . The SEL-387E Relay provides a means of interpreting Firmware Identification Data (FID). The FID string is included near the top of each long event report, and is also available using the STA or SER serial port commands.

  • Page 430: Appendix A: Firmware Versions

    Description of Firmware Changed !ALARM Relay Word bit to NOTALM. Corrected ADC power up. Corrected minimum pickup using 24IP setting in Volts/Hertz user-defined curve. SEL-387E-R205-V0-Z101101-D20020214 Supports PROTO=DNP protocol setting option. SEL-387E-R104-V0-Z001001-D20020214 Does not support POTO=DNP protocol setting option. This firmware differs from the previous...
  • Page 431 This firmware differs from the previous version as follows: Different checksum. SEL-387E-R101-V0-Z001001-D20000606 This firmware differs from the previous version as follows: Fixed the second- and fifth-harmonic blocking elements. Added DS1302 battery-backed clock support. SEL-387E-R100-V0-Z001001-D20000216 Original General-Release Firmware Date Code 20020218 Firmware Versions SEL-387E Instruction Manual...

  • Page 433: Appendix B: Sel-300 Series Relays Firmware Upgrade Instructions

    Terminal emulation software that supports the XMODEM/CRC protocol (these ® ® instructions use HyperTerminal from a Microsoft Windows operating system) œ Serial communications cable (SEL-C234A or equivalent) œ Disk containing firmware upgrade file Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions SEL-387E Instruction Manual...

  • Page 434: Upgrade Procedure

    If there is no identification label, connect the cable to any computer serial port. Note that you may later have to change this computer serial port to establish communication between your relay and your computer. SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20020129 SEL-387E Instruction Manual...
  • Page 435 RTSCTS setting). If computer settings do not match relay settings, change the computer settings to match relay settings. Figure B.1: Establishing a Connection Figure B.2: Determining the Computer Serial Port Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions SEL-387E Instruction Manual...

  • Page 436: Failure To Connect

    6WHS  Terminate communication by pressing the icon illustrating a phone off the hook. Figure B.5: Terminating Communication 6WHS  Correct your port setting. SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20020129 SEL-387E Instruction Manual...
  • Page 437 From the File menu, choose Properties. b. Choose Configure to see a dialog box similar to Figure B.3. 6WHS  Change settings in the appropriate list boxes and click OK. Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions SEL-387E Instruction Manual...

  • Page 438: Save Settings And Other Data

    Under the Transfer menu in HyperTerminal, select Capture Text. 6WHS  Enter a directory and file name for a text file in which you will record existing relay settings. SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20020129 SEL-387E Instruction Manual...

  • Page 439: Start Sel Boot

    Commands Available in SEL BOOT To list the commands available in SEL , use the HELP (HEL) command. The relay BOOT displays a list similar to the following: Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions SEL-387E Instruction Manual...

  • Page 440: Set Relay Data Transmission Rate

    6WHS  Click OK twice. Note that you should not have to reestablish communication; HyperTerminal reestablishes communication automatically the second time you click OK. 6WHS  Press <Enter>. SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20020129 SEL-387E Instruction Manual...

  • Page 441: Download Existing Firmware

    Enter the pathname of a folder on your computer hard drive in which you want to record the existing relay firmware, and select “1K Xmodem” if you have this protocol available on your PC. Otherwise, choose “Xmodem.” Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions SEL-387E Instruction Manual...

  • Page 442: Upload New Firmware

    If you have firmware in such files, double-click on the file you want from Windows Explorer and select a directory on your local hard drive into which you want to B-10 SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20020129 SEL-387E Instruction Manual...
  • Page 443 For Filename, type in the location of your new firmware or use the browse button to select the firmware file (Figure B.13). 6WHS  For Protocol, select “1K Xmodem” if you have this protocol available. Otherwise, select “Xmodem.” Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions B-11 SEL-387E Instruction Manual...

  • Page 444: Check Relay Self-Tests

    If the EN LED is illuminated and the Access Level 0 prompt does not appear, the relay data transmission rate has reverted to the value you recorded in Prepare the Relay on page B-2. B-12 SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20020129 SEL-387E Instruction Manual...

  • Page 445: En Led Not Illuminated

    Change communications software settings to 2400 baud, 8 data bits, 1 stop bit. 6WHS  Reestablish communication. 6WHS  Press <Enter> to have the Access Level 0 prompt “=” appear on your terminal screen. Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions B-13 SEL-387E Instruction Manual...

  • Page 446: Verify Calibration, Status, Breaker Wear, And Metering

    To verify relay calibration settings, use the SHO C command. If the settings do not match those contained in the text file you recorded in Save Settings and Other Data on page B-6, contact the factory for assistance. B-14 SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20020129 SEL-387E Instruction Manual...

  • Page 447: Return Relay To Service

    Note: If an SEL-2020 or SEL-2030 Communications Processor is connected to the relay, re-autoconfigure the SEL-20x0 port. Failure to do so may cause automatic data collection failure if power to the communications processor is cycled. Date Code 20020129 SEL-300 Series Relays Firmware Upgrade Instructions B-15 SEL-387E Instruction Manual...

  • Page 449: Appendix C: Sel Distributed Port Switch Protocol

    Note: You can use the front-panel SET pushbutton to change the port settings to return to SEL protocol. Date Code 20010521 SEL Distributed Port Switch Protocol (LMD) SEL-387E Instruction Manual...

  • Page 451: Appendix D: Configuration, Fast Meter , And Fast Operate Commands

    Response From Relay ASCII Firmware ID String and Terminal ID Setting (TID) ASCII Names of Relay Word bits ASCII Names of bits in the Fast Meter Status Byte Date Code 20020129 Configuration, Fast Meter, and Fast Operate Commands SEL-387E Instruction Manual...

  • Page 452: Message Definitions

    # analog input channels # samples per channel # digital banks (50 bytes) # calculation blocks 0004 Analog channel data offset 0038 Time stamp offset (56 bytes) Configuration, Fast Meter, and Fast Operate Commands Date Code 20020129 SEL-387E Instruction Manual...
  • Page 453 494257320000 (IBW2) 00CE 494357320000 (ICW2) 00CE 494157330000 (IAW3) 00D2 (Winding 3) 494257330000 (IBW3) 00D2 494357330000 (ICW3) 00D2 564157580000 (VAWX) 00D6 (voltages) 564257580000 (VBWX) 00D6 564357580000 (VCWX) 00D6 Date Code 20020129 Configuration, Fast Meter, and Fast Operate Commands SEL-387E Instruction Manual...
  • Page 454 No XS offset 00 if VIWDG=1; 03 if VIWDG=2; 06 if VIWDG=3; FF if VIWDG=12 01 if VIWDG=1; 04 if VIWDG=2; 07 if VIWDG=3; FF if VIWDG=12 Configuration, Fast Meter, and Fast Operate Commands Date Code 20020129 SEL-387E Instruction Manual...
  • Page 455 A5B9 Fast Meter Status Acknowledge Message In response to the A5B9 request, the SEL-387E Relay clears the Settings change (STSET) bit in the Status Byte of the Fast Meter messages (A5D1, A5D2, and A5D3). The bit is set on power up and on settings changes.
  • Page 456 No scale factor offset 494257310000 (IBW1) 0000 494357310000 (ICW1) 0000 334932573100 (3I2W1) 0000 495257310000 (IRW1) 0000 494157320000 (IAW2) 0000 494257320000 (IBW2) 0000 494357320000 (ICW2) 0000 334932573200 (3I2W2) 0000 495257320000 (IRW2) Configuration, Fast Meter, and Fast Operate Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 457: A5D2/A5D3 Demand/Peak Demand Fast Meter Message

    Data Description A5CE Command Message length, #bytes (64) # circuit breakers supported 0010 16 remote bits Remote bit pulse supported Reserved Open breaker 1 Close breaker 1 Date Code 20020129 Configuration, Fast Meter, and Fast Operate Commands SEL-387E Instruction Manual...
  • Page 458 Pulse remote bit RB13 Clear remote bit RB14 Set remote bit RB14 Pulse remote bit RB14 Clear remote bit RB15 Set remote bit RB15 Pulse remote bit RB15 Configuration, Fast Meter, and Fast Operate Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 459: A5E0 Fast Operate Remote Bit Control

    Fast Operate reset code (e.g., "00" for target reset) 54415220520000 Fast Operate reset description string (e.g., "TAR R") 1-byte Checksum A5ED Fast Operate Reset Command The Fast Operate Reset commands take the following form: Date Code 20020129 Configuration, Fast Meter, and Fast Operate Commands SEL-387E Instruction Manual...

  • Page 460: Id Command

    In response to the BNA command, the relay sends the names of the bits transmitted in the Status Byte of the Fast Meter messages (A5D1, A5D2, and A5D3) as shown below: <STX> (STX character, 02) "*","*","*","STSET","STFAIL","STWARN","*","*","yyyy"<CR> <ETX> (ETX character, 03) D-10 Configuration, Fast Meter, and Fast Operate Commands Date Code 20020129 SEL-387E Instruction Manual...

  • Page 461: Sns Message

    The ALIAS settings are ignored for the SNS command (i.e., if ALIAS1 = OUT101 CL_BKR_1, SNS includes "OUT101", not the custom label). Refer to Settings in Section 6: Setting the Relay. SNS message for the SEL-387E is: <STX>"xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","yyyy"<CR> "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","yyyy"<CR> "xxxx","xxxx","xxxx",<CR><ETX>...

  • Page 463: Appendix E: Compressed Ascii Commands

    COMPRESSED ASCII COMMANDS NTRODUCTION The SEL-387E Relay provides Compressed ASCII versions of some of the relay’s ASCII commands. The Compressed ASCII commands allow an external device to obtain data from the relay, in a format which directly imports into spreadsheet or database programs, and which can be validated with a checksum.
  • Page 464 <STX>"No Data Available","0668"<CR><ETX> CASCII C – SEL-387E R OMMAND ELAY Display the SEL-387E Relay Compressed ASCII configuration message by sending: CAS <ENTER> The relay sends: <STX> "CAS",7,"yyyy"<CR> "CST",1," yyyy"<CR>...
  • Page 465 "5H","FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT"," yyyy"<CR> "1D","F","I","I","F","7S"," yyyy"<CR> "16H","IAW1","IBW1","ICW1","IAW2","IBW2","ICW2","IAW3","IBW3","ICW3","VAWX", "VBWX","VCWX","VDC","FREQ","TRIG","NAMES OF ELEMENTS IN ALL RELAY WORD ROWS"," yyyy"<CR> "120D","F","F","F","F","F","F","F","F","F","F","F","F","F","F","1S","88S"," yyyy"<CR> "CEV S64 R",1," yyyy"<CR> "1H","FID"," yyyy"<CR> "1D","35S"," yyyy"<CR> "7H","MONTH_","DAY_","YEAR_","HOUR_","MIN_","SEC_","MSEC_"," yyyy"<CR> "1D","I","I","I","I","I","I","I"," yyyy"<CR> "5H","FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT"," yyyy"<CR> "1D","F","I","I","F","7S"," yyyy"<CR> Date Code 20010521 Compressed ASCII Commands SEL-387E Instruction Manual...

  • Page 466: Cbreaker Command

    Note: If the analog current input names (IAW1, etc.) have been changed via the Analog Input Labels global settings, they will appear in the above report as set. CBREAKER C OMMAND Display the SEL-387E Relay Compressed ASCII breaker report by sending: CBR <ENTER> The relay sends: <STX>...

  • Page 467: Cevent Command

    Note: If Sx and/or Ly are given, they override all other parameters. Note: The L and U parameters are supported for consistency with the SEL-321 Relay. The C parameter is used for SEL-2020 compatibility. Date Code 20010521 Compressed ASCII Commands SEL-387E Instruction Manual...

  • Page 468: Cevent Winding Report (Default

    CEVENT Differential Report If DIF is specified in the command line, the report on differential element quantities is provided. To obtain the report, send the following: CEV DIF <ENTER> The relay responds: <STX> Compressed ASCII Commands Date Code 20010521 SEL-387E Instruction Manual...

  • Page 469: Chistory Command

    DIGITAL_ELEMENT_NAMES SETTINGS text refers to the current settings of the relay as described in the event report section. CHISTORY C OMMAND Display the SEL-387E Relay Compressed ASCII history report by sending: CHI <ENTER> The relay sends: <STX> "FID","yyyy"<CR> "FID=SEL-387E-XXXX-V-ZXXXXXX-DXXXXXXXX","yyyy"<CR> "MONTH_","DAY_","YEAR_","HOUR_","MIN_","SEC_","MSEC_","yyyy"<CR>...

  • Page 470: Cstatus Command

    CSTATUS C OMMAND Display the SEL-387E Relay Compressed ASCII status report by sending: CST <ENTER> The relay sends: <STX> "FID","yyyy"<CR> "FID=SEL-387E-XXXX-V-ZXXXXXX-DXXXXXXXX","yyyy"<CR> "MONTH_","DAY_","YEAR_","HOUR_","MIN_","SEC_","MSEC_","yyyy"<CR> xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,"yyyy"<CR> "IAW1","IBW1","ICW1","IAW2","IBW2","ICW2","IAW3","IBW3","ICW3", "VAWX", "VBWX","VCWX", "+5V_PS","+5V_REG","-5V_REG","+12V_PS","-12V_PS","+15V_PS", "-15V_PS","TEMP","RAM","ROM","A/D","CR_RAM","EEPROM","IO_BRD","yyyy"<CR> "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx", "xxxx", "xxxx", “yyyy"<CR> <ETX> where xxxx are the data values corresponding to the first line labels.

  • Page 471: Appendix F: Unsolicited Ser Protocol

    Transfer" message to enable the SEL-387E Relay to transmit unsolicited binary SER messages. 2. When SER records are triggered in the SEL-387E, the relay responds with an unsolicited binary SER message. If this message has a valid checksum, it must be acknowledged by sending an acknowledge message with the same response number as contained in the original message.

  • Page 472: 0X01 - Function Code: Enable Unsolicited Data Transfer

    Upon power-up, the SEL-387E Relay disables its own unsolicited transmissions. This function enables the SEL-387E Relay to begin sending unsolicited data to the device which sent the enable message, if the SEL-387E has such data to transfer. The message format for function code 0x01 is shown below.

  • Page 473: 0X02 - Function Code: Disable Unsolicited Data Transfer

    The function 0x18 is used for the transmission of unsolicited Sequential Events Recorder (SER) data from the SEL-387E Relay. This function code is also passed as data in the “Enable Unsolicited Data Transfer” and the “Disable Unsolicited Data Transfer” messages to indicate which type of unsolicited data should be enabled or disabled.
  • Page 474 Two-byte day of year (1 - 366) of overflow message generation yyyy Two-byte, four-digit year (e.g., 1999 or 07CF hex) of overflow message generation. mmmmmmmm Four-byte time of day in milliseconds since midnight FFFFFFFE Four-byte end-of-records flag Unsolicited SER Protocol Date Code 20010521 SEL-387E Instruction Manual...

  • Page 475: Acknowledge Message

    Response number (XX = 00, 01, 02, 03, 00, 01, ...) must match response number from message being acknowledged. cccc Two-byte CRC-16 checkcode for message The SEL-387E supports the following response codes: Response Success Function code not recognized Function disabled Examples 1.
  • Page 476 16 seconds. The relay always requests acknowledgment in unsolicited SER messages (LSB of the status byte is set). Unsolicited SER messages can be enabled on multiple ports simultaneously. Unsolicited SER Protocol Date Code 20020129 SEL-387E Instruction Manual...

  • Page 477: Appendix G: Distributed Network Protocol (Dnp) 3.00

    3.00 VERVIEW Some versions of the SEL-387E family of relays support Distributed Network Protocol (DNP) 3.00 L2 Slave protocol. This includes access to metering data, protection elements (Relay Word), contact I/O, targets, Sequential Events Recorder, breaker monitor, relay summary event reports, settings groups, and time synchronization.

  • Page 478: Data-Link Operation

    When the SEL-387E decides to transmit on the DNP link, it has to wait if the physical connection is in use. The SEL-387E monitors physical connections by using CTS input (treated as a Data Carrier Detect) and monitoring character receipt.

  • Page 479: Device Profile

    Table G.1: Data Access Methods Data Retrieval Method Description Relevant SEL-387E Settings Polled Static The master polls for static Set CLASS = 0, (Class 0) data only. Set UNSOL = N. Polled Report-by-Exception The master polls frequently Set CLASS to a non-zero value, for event data and Set UNSOL = N.
  • Page 480 ❒ Variable ã Configurable Application Confirm Complete Appl. Response ã None ❒ Fixed at ❒ Variable ❒ Configurable Others Attach explanation if ’Variable’ or ’Configurable’ was checked for any time-out. Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 481 ã Never ❒ Only certain objects ❒ When Device Restarts ❒ When Status Flags Change ❒ Sometimes (attach explanation) ã ENABLE/DISABLE UNSOLICITED No other options are permitted. Function codes supported Date Code 20020129 Distributed Network Protocol (DNP) 3.00 SEL-387E Instruction Manual...

  • Page 482: Object Table

    ❒ Point-by-point list attached ãYes ❒No Sends Multi-Fragment Responses: In all cases of a configurable item within the device profile, the item is controlled by SEL-387E settings. BJECT ABLE The following object table lists supported objects, functions, and qualifier code combinations.
  • Page 483 à à 16-Bit Frozen Delta Counter Event Without Time à à à à à à à 32-Bit Frozen Counter Event With Time à à à à à à à Date Code 20020129 Distributed Network Protocol (DNP) 3.00 SEL-387E Instruction Manual...
  • Page 484 3,4,5,6 17,28 à à à à à à request à Time and Date–All Variations à à à à à à à Time and Date à à à à à Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 485 Ã Ã Ã Ã Ã Ã Virtual Terminal Event Data 1,20,21 129,130 17,28 Ã Ã Ã Ã Ã Ã Ã No object 13,14,23 Ã Ã Ã Ã Ã Ã Date Code 20020129 Distributed Network Protocol (DNP) 3.00 SEL-387E Instruction Manual...

  • Page 486: Data Map

    The following is the default object map supported by the SEL-387E Relay (see Appendix A: Firmware Versions). Table G.3: SEL-387E-Wye/Delta DNP Data Map DNP Object Type Index Description 01,02 000–799 Relay Word, where OCA is 0 and TRIP1 is 319.
  • Page 487 3V1 magnitude and angle. 30,32 44,45 3V2 magnitude and angle. 30,32 46,47 3V0 magnitude and angle. 30,32 48–51 MW 3-phase, A,B,C. 30,32 52–55 MVAR 3-phase, A,B,C. 30,32 56–59 MVA 3-phase, A,B,C. Date Code 20020129 Distributed Network Protocol (DNP) 3.00 G-11 SEL-387E Instruction Manual...
  • Page 488 Peak demand IB time in DNP format for Wdg. 2. 30,32 Peak demand IC mag. for Wdg. 2. 119–121 Peak demand IC time in DNP format for Wdg. 2. G-12 Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 489 A-phase MVARhr in and out. 30,32 190,191 B-phase MVARhr in and out. 30,32 192,193 C-phase MVARhr in and out. 194–196 Last reset time in DNP format. 40,41 Active settings group. Date Code 20020129 Distributed Network Protocol (DNP) 3.00 G-13 SEL-387E Instruction Manual...
  • Page 490 If either the Trip or Close bit is set, one of the other control field bits must be set as well. The control field is interpreted as follows: G-14 Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 491 If the value written to index 0 is outside of the range 1 through 6, the relay will not accept the value and will return a hardware error status. Table G.4: SEL-387E Relay Binary Input Lookup Table Binary...
  • Page 492 LB12 LB13 LB14 LB15 LB16 383–376 Reserved for future use. ** These rows will show asterisks in response to TAR command, if optional interface board is not installed. G-16 Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 493 The S parameter is equivalent to AI VIEW and the T parameter is equivalent to BI VIEW; they are available for consistency with Date Code 20020129 Distributed Network Protocol (DNP) 3.00 G-17 SEL-387E Instruction Manual...
  • Page 494 DECPLA setting that would normally apply. Dead-bands are added using a colon and dead-band count. This dead-band will override the ANADBA, ANADBV, or ANADBM setting. For example: G-18 Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 495 If the relay initiates a connection, it shall disconnect once there have been no transactions for TIMEOUT time, using the disconnect command "+++ATH<CR>". Also, if an outside caller connects to the modem in the SEL-387E, the SEL-387E will disconnect the modem if there have been no transactions for the TIMEOUT time.
  • Page 496 DNP port, but you will need the appropriate access levels for setting changes and breaker operations. A virtual terminal session times out in the same way as an ASCII session. G-20 Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 497 Analog reporting dead band (0–32767 counts) ANADBA Analog reporting dead band (0–32767 counts) ANADBV Analog reporting dead band (0–32767 counts) ANADBM Event Data Confirmation time-out (0.1–50.0 sec) ETIMEO Date Code 20020129 Distributed Network Protocol (DNP) 3.00 G-21 SEL-387E Instruction Manual...
  • Page 498 PUNSOL Address of master to report to (0–65534) REPADR Number of events to transmit on (1–200) NUMEVE Age of oldest event to force transmit on, seconds (0.0–60.0) AGEEVE G-22 Distributed Network Protocol (DNP) 3.00 Date Code 20020129 SEL-387E Instruction Manual...
  • Page 499 SEL-387E RELAY COMMAND SUMMARY CCESS EVEL OMMANDS $FFHVV The only thing that can be done at Access Level 0 is to go to Access Level 1. The /HYHO  screen prompt is: = &RPPDQGV Enter Access Level 1. If the main board password jumper (JMP6A) is not in place, the relay prompts for the entry of the Access Level 1 password in order to enter Access Level 1.
  • Page 500 Show port settings and identification of port to which user is connected. SHO P n Show port settings for Port n (n =1, 2, 3, 4). SHO R Show Sequential Events Recorder (SER) settings. Show relay self-test status. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...
  • Page 501 Show differential element 1 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. EVE DIF2 n Show differential element 2 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. Date Code 20020129 SEL-387E Relay Command Summary SEL-387E Instruction Manual...
  • Page 502 Show port settings and identification of port to which user is connected. SHO P n Show port settings for Port n (n =1, 2, 3, 4). SHO R Show Sequential Events Recorder (SER) settings. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...
  • Page 503 Append F to display targets on the front-panel second row of LEDs. Show or set time (24-hour time). Show time presently in the relay by entering just TIM. Example time 22:47:36 is entered with command TIM 22:47:36. Trigger an event report. Date Code 20020129 SEL-387E Relay Command Summary SEL-387E Instruction Manual...
  • Page 504 Show differential element 1 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. EVE DIF2 n Show differential element 2 event report number n, with 1/4-cycle resolution. Attach S8 for 1/8-cycle resolution. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...
  • Page 505 SER n Show the latest n rows in the Sequential Events Recorder (SER) event report. SER m n Show rows m through n in the Sequential Events Recorder (SER) event report. Date Code 20020129 SEL-387E Relay Command Summary SEL-387E Instruction Manual...
  • Page 506 Append F to display targets on the front panel, second row of LEDs. Show or set time (24-hour time). Show time presently in the relay by entering just TIM. Example time 22:47:36 is entered with command TIM 22:47:36. Trigger an event report. SEL-387E Relay Command Summary Date Code 20020129 SEL-387E Instruction Manual...

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