Schweitzer Engineering Laboratories SEL-2BFR Instruction Manual
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Schweitzer Engineering Laboratories SEL-2BFR Instruction Manual

Breaker failure relay and monitor
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SEL-2BFR, -2/BFR
BREAKER FAILURE RELAY AND MONITOR
INSTRUCTION MANUAL
20030207
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-2BFR, -2/BFR BREAKER FAILURE RELAY AND MONITOR INSTRUCTION MANUAL 20030207 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. , Connectorized, , Job Done, Schweitzer Engineering Laboratories, , SEL, SEL , and SEL-PROFILE, are registered...

  • Page 5: Section 1: Introduction

    Added information on the effect of 50FT pickup on IRIG-B operation in Section 2: Specifications and Section 5: Applications. 990714 Changed footers on entire manual to reflect SEL-2BFR, -2/BFR. Added Model Variation Information to Section 1: Introduction. Incorporated SEL-2BFR-2 Time Delayed Retrip Logic into Section 2: Specifications.
  • Page 7 SEL-2BFR, -2/BFR INSTRUCTION MANUAL TABLE OF CONTENTS SECTION 1: INTRODUCTION SECTION 2: SPECIFICATIONS SECTION 3: COMMUNICATIONS SECTION 4: EVENT REPORTING SECTION 5: APPLICATIONS SECTION 6: INSTALLATION SECTION 7: MAINTENANCE AND TESTING SECTION 8: APPENDICES Appendix A: Firmware Versions in This Manual...

  • Page 9: Table Of Contents

    Getting Started ..........................1-1 Overview ............................1-1 Relay Features ........................1-1 Model Variations ..........................1-2 SEL-BFR ..........................1-2 SEL-2BFR Relay........................1-2 2BFR-2 Relay........................1-2 Conventional Terminal Block ....................1-2 Plug-In Connector .........................1-3 Phase Rotation........................1-3 System Frequency .........................1-3 General Description ........................1-3 Date Code 990714 Introduction SEL-2BFR, -2/BFR Instruction Manual...

  • Page 11: Introduction

    Specifications outlines the differences between the SEL-2BFR and legacy SEL-BFR relays. The hardware is identical for all SEL-2BFR relays. If you are unfamiliar with the SEL-2BFR or SEL-2BFR-2 relays, we suggest that you read this section, then perform the Initial Checkout Procedure in Section 7: Maintenance & Testing. For...

  • Page 12: Model Variations

    ODEL ARIATIONS SEL-BFR This manual is written for SEL-2BFR relays. For SEL-BFR relays, substitute SEL-BFR for each reference to SEL-2BFR. Refer to . Appendix C: SEL-BFR Specifications for SEL-BFR general specifications and drawings SEL-2BFR Relay The basic SEL-2BFR relay has all the features outlined in the preceding Overview.

  • Page 13: Plug-In Connector

    1/200 seconds. ENERAL ESCRIPTION The SEL-2BFR Relay is a single- or three-pole breaker failure protection and monitoring package. The relay provides classical overcurrent-based breaker failure protection for a wide variety of breaker arrangements. Additional features include metering, event reporting, remote setting capabilities, breaker operating time monitors, energy interruption monitors, and breaker resistor thermal protection.
  • Page 14 When you use a single motor-operated disconnect switch (MOD) with the protected breaker, the SEL-2BFR Relay can trip the MOD to isolate the failed breaker when phase current drops below a settable value. When an MOD is not installed, the MOD logic may be used to indicate a ‘Safe to Disconnect’...
  • Page 15 All event reports are time-tagged by a self-contained clock/calendar. The SEL-2BFR Relay is available in either a conventional terminal block or plug-in connector model. The conventional terminal block relay has #6-32 screw terminals for ring lugs. The plug- in connector model offers easy and fast connector installation and replacement through the use of plug-in connectors.
  • Page 17 Thermal Protection of Close and Trip Resistors ..............2-19 Protection for Current Through an Open Breaker (Flashover)..........2-22 Protection for Failure to Close ....................2-22 Time-Delayed Breaker Retrip (SEL-2BFR Relay) .............2-23 Time-Delayed Breaker Retrip (SEL-2BFR-2 Relay) ............2-24 86BF Trip and Reset Logic ....................2-25 MOD Trip Disabled.....................2-25...
  • Page 18 Figure 2.9: Trip and Close Resistor Thermal Protection Logic.............2-20 Figure 2.10: Protection for Current Through an Open Breaker Logic ............2-21 Figure 2.11: Phase Discordance While Closing Logic................2-23 Figure 2.12: Time-Delayed Retrip Logic (SEL-2BFR Relay) ..............2-24 Figure 2.13: Time-Delayed Retrip Logic (SEL-2BFR-2 Relay) .............2-25 Specifications Date Code 20010515 SEL—2BFR, -2/BFR Instruction Manual...
  • Page 19 Figure 2.21: 50FT Dropout Time Curves ....................2-36 Figure 2.22: 50MD Pickup Time Curves ....................2-37 Figure 2.23: 50MD Dropout Time Curves ....................2-37 Figure 2.24: 50LD Pickup Time Curves....................2-38 Figure 2.25: 50LD Dropout Time Curves ....................2-38 Date Code 20010515 Specifications SEL-2BFR, -2/BFR Instruction Manual...

  • Page 21: Specifications

    Make: 30 A; Carry: 6 A continuous carry at 70°C; 1 s Rating: 50 A; MOV protected: 330 Vdc, 40 J; Pickup time: Less than 5 ms; Dropout time: Less than 8 ms, typical. Breaking Capacity (10000 operations): Date Code 20010515 Specifications SEL-2BFR, -2/BFR Instruction Manual...
  • Page 22 IEC 255-22-1: 1988, 2.5 kV Peak, Common Mode, 1.0 kV Peak, Differential Mode Electrostatic Discharge: IEC 801-2: 1991, Level 4 Radiated Radio Frequency: IEC 255-22-3: 1989, (Connectorized) IEEE C37.90.2: 199x (draft), (Terminal Block) 10 V/m Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 23: Fault Current Element (50Ft)

    Dropout Time: Less than 1.55 cycles Flashover Voltage Element (59FO) Pickup Range: 1.0–67.0 V Pickup Accuracy Steady State: ±0.09 V ±5% Pickup Time: Less than 1.35 cycle Dropout Time: Less than 1.55 cycles Date Code 20010515 Specifications SEL-2BFR, -2/BFR Instruction Manual...

  • Page 24: Negative-Sequence Overvoltage Element (47Q)

    ±2.63% (measured voltage) ±9.45% (measured current) Section 5: Applications discusses use of this error figure. Breaker Resistor Thermal Elements (26CF, 26CP, 26TF, 26TP) Pickup Range 5 A Model: 0.01–1000.00 Joules 1 A Model: 0.002–200.000 Joules Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 25: Settable Timers

    Phase Discordance Close Input Pickup Timer 62OP Trip and Close Resistor Heating Pickup Timer RTSD Retrip Seal-In Delay Timer (SEL-2BFR-2 ONLY) setting ranges: 0.25–63.75 cycles in quarter-cycle steps RTTD Retrip Time Delay Timer setting ranges: 0.25–63.75 cycles in quarter-cycle steps...

  • Page 26: Relay Outputs

    ELAY UTPUTS The SEL-2BFR Relay has seven programmable output relays. All outputs, except the ALARM output, are programmed with the LOGIC command. All can be tested with the OUT n command.

  • Page 27: Alarm Output

    0 indicates that the element is dropped out or logic condition is false The logic description defines the logic conditions in the Relay Word. The relay updates the Relay Word each quarter-cycle. Table 2.2: SEL-2BFR Relay Word Relay Word Bits 50FT...

  • Page 28: Table 2.3: Relay Word Bit Definitions

    A-Phase Trip Resistor Failure TRPA A-Phase Trip Resistor Pending Failure CRFB B-Phase Close Resistor Failure CRPB B-Phase Close Resistor Pending Failure TRFB B-Phase Trip Resistor Failure TRPB B-Phase Trip Resistor Pending Failure Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 29: Programmable Output Logic

    = R * MA3 = R * MA4 = R * MA5 ALARM = (Self-Test Failure or Warning) + (Level 1 Password Violation) + (Setting or Logic Changes) + (Level 2 Access Attempts) Date Code 20010515 Specifications SEL-2BFR, -2/BFR Instruction Manual...

  • Page 30: Relay Targets

    The relay does not clear the front-panel targets when additional trip outputs occur. The new tripping targets are displayed with the old in a cumulative fashion until an operator clears them as described above. 2-10 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 31: Signal Processing

    (FOD) filter (P = X1 – X2) rather than the CAL filter. OGIC ESCRIPTION The SEL-2BFR Relay provides protection for several circuit breaker (CB) failure modes: Failure to clear a fault (six available schemes) Failure to trip under load Failure of the breaker 52A contact to indicate operation...

  • Page 32: Protection While Tripping Fault Current

    While the schemes share elements and timers, each is independent. You may enable only one protection scheme at a time. The SEL-2BFR Relay applies the single chosen scheme to all three breaker poles. To enable the selected scheme for breaker lockout tripping via the 86BF TRIP output, set the FBF bit in the M86T logic mask equal to one.

  • Page 33: Scheme 2

    If 50FT is asserted when the SEL-2BFR Relay receives the trip signal, the AND 1 output goes high. The 62FC pickup timer starts and the trip input signal is latched in. At this point, trip signal dropout does not affect the breaker failure scheme.

  • Page 34: Scheme 4

    Figure 2.4 illustrates Scheme 4 A-phase breaker protection. Use Scheme 4 breaker protection in single breaker, ring-bus, or breaker-and-a-half installations. When the SEL-2BFR Relay trip input is asserted, the 62TT pickup timer starts. The trip input is latched and may be deasserted after a single quarter-cycle assertion. 62TT pickup time following trip input assertion, the 62TT timer output asserts.

  • Page 35: Scheme 6

    Figure 2.6 illustrates Scheme 6 A-phase and three-phase breaker protection. Use Scheme 6 breaker protection in single breaker, ring-bus, or breaker-and-a-half installations. When the SEL-2BFR Relay trip input is asserted, the 62TT pickup timer starts. The trip input is latched and may be deasserted after a single quarter-cycle assertion. Following trip input assertion and 62TT pickup time, the 62TT timer output asserts.
  • Page 36 Scheme 6 applied to such breaker arrangements. Figure 2.1 and accompanying discussion (Scheme 1) address operating concerns similar to this scenario. Scheme 1 may be better suited to operate in such a scenario. 2-16 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 37: Protection While Tripping Load Or Line-Charging Current

    If the breaker fails in some manner detected by other logic in the relay and the 86BF TRIP output asserts, the 62A timers are disabled. When the 62AF timer expires, the Relay Date Code 20010515 Specifications 2-17 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 38: Figure 2.8: Failure To Trip Load Or Line-Charging Current Logic

    TRIP B 50LD RELAY OR MANUAL TRIP 62LP LPpu 62LD LDpu TRIP C 50LD RELAY OR MANUAL TRIP DWG: IM2008 DATE: 05-04-01 Figure 2.8: Failure to Trip Load or Line-Charging Current Logic 2-18 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 39: Thermal Protection Of Close And Trip Resistors

    Section 5: Applications. Use the HEAT command to track or reset thermal model resistor energy. Date Code 20010515 Specifications 2-19 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 40: Figure 2.9: Trip And Close Resistor Thermal Protection Logic

    Figure 2.9: Trip and Close Resistor Thermal Protection Logic 2-20 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 41: Figure 2.10: Protection For Current Through An Open Breaker Logic

    Figure 2.10: Protection for Current Through an Open Breaker Logic Date Code 20010515 Specifications 2-21 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 42: Protection For Current Through An Open Breaker (Flashover)

    Figure 2.11 shows logic which detects a failure of one or two breaker poles to close. When the SEL-2BFR Relay receives a close signal, the 62UC timer begins timing. After the 62UC pickup time (UCpu) expires, if any phase has current greater than the 50LD setting and the sum of the currents divided by 87UB is greater than the phase current, the 62UF and 62UP timers start.

  • Page 43: Time-Delayed Breaker Retrip (Sel-2Bfr Relay)

    Figure 2.11: Phase Discordance While Closing Logic Time-Delayed Breaker Retrip (SEL-2BFR Relay) Figure 2.12 shows one phase of the logic used to provide a current supervised, time-delayed retrip of the protected breaker. To enable this function, set the DRTE setting equal to Y. With this setting, the relay starts the RTTD time-delayed pickup timer when the A-phase trip input is asserted if A-phase current is above the 50LD relay element setting.

  • Page 44: Time-Delayed Breaker Retrip (Sel-2Bfr-2 Relay)

    DWG: IM2012 50LD DATE: 06-08-00 Figure 2.12: Time-Delayed Retrip Logic (SEL-2BFR Relay) Time-Delayed Breaker Retrip (SEL-2BFR-2 Relay) Figure 2.13 shows one phase of the current supervised, time-delayed retrip logic. This logic provides the ability to energize a redundant trip coil of the protected breaker after a fixed time delay.

  • Page 45: 86Bf Trip And Reset Logic

    MANUAL TRIP DWG: IM2013 50LD DATE: 06-08-00 Figure 2.13: Time-Delayed Retrip Logic (SEL-2BFR-2 Relay) 86BF Trip and Reset Logic MOD Trip Disabled Figure 2.14 shows the logic used to assert the 86BF trip output and the 86RS reset bit in the Relay Word when MOD Trip logic is disabled (setting ModTrip = N).

  • Page 46: Mod Trip Enabled

    ALRM bit asserts for one second and the message: “Current after ModTrip” is stored in the ALRM buffer. When the 50LD elements drop out, the timing sequence continues as described above. 2-26 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 47: Figure 2.16: 86Bf Trip, Reset, And Mod Trip Logic (Mod Trip Enabled)

    Figure 2.16: 86BF TRIP, Reset, and MOD Trip Logic (MOD Trip Enabled) Date Code 20010515 Specifications 2-27 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 48: 52Bv Logic

    52A input is deasserted while no phase current is above the 50LD setting. The 52BV bit deasserts when the 52A input asserts, or when any phase current exceeds the 50LD setting. Figure 2.18: 52BV Logic 2-28 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 49: Alarm Logic

    52A Contradicts Voltage ALRM asserts if the 59FO overvoltage element picks up when 52A is asserted. Current While Open ALRM asserts if any 50LD element picks up when 52A is not asserted. Date Code 20010515 Specifications 2-29 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 50: Mod Contradicts Current

    ALRM asserts if the phase 50LD element is picked up Topen time following phase trip input assertion. Slow Close ALRM asserts if the phase 50LD element is not picked up Tclose time following close input assertion. 2-30 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 51: Serial Interfaces

    ERIAL NTERFACES The SEL-2BFR Relay is equipped with two EIA-232 serial communications ports. PORT 2 has 9-pin connectors on both the front and rear panels, designated PORT 2F and PORT 2R, respectively. PORT 2R, located on the relay rear panel, typically is used with an SEL-2020 or an SEL-2030 Communications Processor or local printer.

  • Page 52: Event Reporting

    No outputs may be asserted when the relay is in this configuration. The relay continuously runs all self-tests. 2-32 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 53: Offset

    If the checksums disagree, the setting test fails and the relay disables all protective and control functions. The following table shows relay actions for any self-test condition: warning (W) or failure (F). Date Code 20010515 Specifications 2-33 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 54: Programmable Logic Mask Concept

    Y elements and deselected the Z element by setting the mask bits to (1,1,0). The computer ANDs each bit in the Relay Word with the corresponding bit the operator set in the mask. Next, 2-34 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 55: Overcurrent Element Operating Time Curves

    The operating times do not include output contact operating time delay, thus they are accurate for determining element operating times for use with SEL-2BFR Relay internal logic. You may verify these operating times using relay output contact closure to indicate element assertion.

  • Page 56: Figure 2.20: 50Ft Pickup Time Curves

    50FT Setting = 1.0 A sec Multiple of Setting Minimum Mean Maximum Figure 2.20: 50FT Pickup Time Curves 50FT Setting = 1.0 A sec Multiple of Setting Minimum Mean Maximum Figure 2.21: 50FT Dropout Time Curves 2-36 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 57: Figure 2.22: 50Md Pickup Time Curves

    50MD Setting = 1.0 A sec Multiple of Setting Minimum Mean Maximum Figure 2.22: 50MD Pickup Time Curves 50MD Setting = 1.0 A sec Multiple of Setting Minimum Mean Maximum Figure 2.23: 50MD Dropout Time Curves Date Code 20010515 Specifications 2-37 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 58: Figure 2.24: 50Ld Pickup Time Curves

    50LD Setting = 1.0 A sec Multiple of Setting Minimum Mean Maximum Figure 2.24: 50LD Pickup Time Curves 50LD Setting = 1.0 A sec Multiple of Setting Minimum Mean Maximum Figure 2.25: 50LD Dropout Time Curves 2-38 Specifications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...
  • Page 115 M86T Mask Controls the 86BF TRIP Output .............5-23 Logic Mask M86T ....................5-23 MER Logic Mask Triggers Event Report Generation ..........5-23 Logic Mask MER ....................5-24 MA1 Mask Controls the A1 Output, Breaker Operation Alarms ........5-24 Logic Mask MA1....................5-24 Date Code 20010515 Applications SEL-2BFR, -2/BFR Instruction Manual...
  • Page 116 Figure 5.10: Example DC Input Connections..................5-22 Figure 5.11: Example Contact Output Connections ................5-23 Figure 5.12: Three-Pole Instantaneous Retrip Using the A1 Output Contact .........5-26 Figure 5.13: Single-Pole Instantaneous Retrip Using the A1, A2, and A3 Contacts ......5-27 Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 117: Applications

    The 62 timer delay should be set to allow time for the protected breaker to operate and the 50 element to reset. Also, Date Code 20010515 Applications SEL-2BFR, -2/BFR Instruction Manual...
  • Page 118 Failure of a breaker pole to close Pole flashover failure while breaker is open You can enable the SEL-2BFR Relay to protect a breaker independently for each of these failure types, as shown below. In ring-bus and breaker-and-a-half installations, two circuit breakers must operate to interrupt line current.

  • Page 119: Sel-2Bfr Relay Application

    To effectively protect a power circuit breaker that includes tripping or closing resistors, the SEL-2BFR Relay must measure current flowing through each breaker pole and voltage drop across it. Figure 5.3 shows a single-phase of ac current and voltage inputs to the relay. The ac and dc connection diagrams for this example are included in the Typical AC/DC Connections subsection of Section 6: Installation.

  • Page 120: Example Breaker

    The protection scheme in this example protects the breaker for all failures to trip. When fault current exceeds the minimum three-phase fault duty for a Zone 1 fault, the fault must be cleared Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 121: Setting Selection

    SEL-2BFR Relay trip and close resistor thermal protection schemes. Breaker closure and pole flashover failures are covered. The MOD Trip logic automatically isolates the protected breaker in the event of breaker failure.
  • Page 122 Additional timing considerations are listed in Table 5.3. The timing diagrams shown below allow you to compare the timing of each breaker failure scheme to the basic scheme shown in Figure 5.2. Figure 5.4: Scheme 1 Breaker Failure Timing Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...
  • Page 123 Figure 5.5: Scheme 2 Breaker Failure Timing Figure 5.6: Scheme 3 Breaker Failure Timing Date Code 20010515 Applications SEL-2BFR, -2/BFR Instruction Manual...
  • Page 124 Figure 5.7: Scheme 4 Breaker Failure Timing Figure 5.8: Scheme 5 Breaker Failure Timing Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 125: Select 50Ft Overcurrent Element Setting

    The failure to trip fault current logic operates each time the breaker is called upon to trip phase current greater than the 50FT setting. Note: The SEL-2BFR Relay does not discriminate between phase faults and ground faults. Fault discrimination is based strictly upon phase current magnitude. Breaker operations for ground faults with current duties above the 50FT setting are protected under the failure to break fault current logic.

  • Page 126: Select Scheme Timer Settings

    If an auxiliary interposing relay is used between the line protective relay trip output and the trip input to the SEL-2BFR Relay, you must account for the operating time of the auxiliary relay as well. Be aware that different models of auxiliary relays have a wide variety of operating times.
  • Page 127 8.5 – (2.0 + 2.0 + 1.10 + 2.0 + 0.5) cycles Ts = 0.90 cycles You can now calculate 62FC using the following equation: 62FC = Tbl + T50 + Ts = 4.0 cycles Date Code 20010515 Applications 5-11 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 128: Select 50Ld Overcurrent Element Setting

    The timing of this protection scheme is nearly identical to that shown in Figure 5.5. The difference is that pending failure bit, LPF, is provided with this scheme. Consider using the pending failure bit to retrip the protected breaker through a second trip coil. 5-12 Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 129: Select 52A Supervised Breaker Failure Protection Settings

    In this instance, the circuit breaker could be issued a trip signal while the generator is idling. Under these conditions, current through the protected breaker is nearly zero. You can set the SEL-2BFR Relay to operate the 86 lockout relay if the relay 52A input is not deasserted after a settable time delay.

  • Page 130: Select Trip And Close Resistor Thermal Element Settings

    If the RTTD time delay is too long and the initial trip does not operate the breaker, the breaker may not have time to fully open on the retrip signal before the SEL-2BFR Relay operates the bus lockout relay. Time delays between two and six cycles are typical.

  • Page 131: 26Tf And 26Tp Thermal Element Settings

    26TP = 75% • 26TF = 3.42 J secondary. Calculate close resistor energy capacity the same way. In the example breaker, the close resistors consist of 28 ceramic disks. Maximum thermal stress per head is calculated as follows: Date Code 20010515 Applications 5-15 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 132: Settings

    If a single-pole close resistor remains in service, the relay measures a small amount of negative-sequence voltage. This amount should not be greater than the 47Q element setting or close resistor thermal elements may 5-16 Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 133: 62Op Time Delay Pickup Setting

    = 4.33 V secondary The accuracy specification of the 59FO element is ±0.09 V secondary ±5% of settings, so: 59FO maximum error = 0.09 V + (0.05) • 4.33 V = 0.31 V secondary Date Code 20010515 Applications 5-17 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 134: Select Phase Discordance/Failure To Close Settings

    Set the 62UC timer slightly higher than the nominal closing time of the protected breaker. For the example breaker, assuming a closing time of 10 cycles, we select a setting: 62UC = 12 cycles The additional two cycles allow for possible pole scatter upon closure. 5-18 Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 135: 62Uf And 62Up Timer Settings

    Motor-operated disconnect switches are used to isolate a circuit breaker for maintenance or in the event of a failure. You can set the SEL-2BFR Relay to operate an MOD following a breaker failure. The protection scheme must meet several requirements before the MOD Trip logic is useful.

  • Page 136: 62M1 And 62M2 Timer Settings

    4300:1. The SEL-2BFR Relay uses the CTR and PTR settings in the METER command function to display voltage and current magnitudes in primary units. The settings should be in per unit, thus a CT ratio of 3000:5 (600:1) yields a CTR setting of 600.

  • Page 137: Select Serial Port Timeout Settings Time1 And Time2

    In this example, personnel have seven rings to answer the substation telephone before the modem answers (RINGS = 7). You can set RINGS between 1 and 30. If you do not use an external modem with the SEL-2BFR Relay, set RINGS to any value within range. Example Setting Summary The following is a summary of the relay settings used for this example.

  • Page 138: Example Setting Group

    Logic Mask Setting Selection Section 2: Specifications explains the operational concept of programmable logic masks used in the SEL-2BFR Relay. Example logic mask settings below are provided to illustrate relay function and application. Please select logic mask settings particular to your application.

  • Page 139: M86T Mask Controls The 86Bf Trip Output

    Figure 5.11: Example Contact Output Connections M86T Mask Controls the 86BF TRIP Output Use the 86BF TRIP output contacts to assert the 86 lockout relay when the SEL-2BFR Relay detects a breaker failure. Example logic mask settings appear below. Logic Mask M86T...

  • Page 140: Logic Mask Mer

    50FT 50LD 50MD 52BV TTF FOBF FOPF 59FO 59H ALRM TC PDBF PDPF 87UA 87UB 87UC 86RS MDT CRFA CRPA TRFA TRPA CRFB CRPB TRFB TRPB CRFC CRPC TRFC TRPC DOPA DOPB DOPC 47Q 5-24 Applications Date Code 20010515 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 141: Ma3 Controls The A3 Output, Mod Trip

    Various protective element pending failure output bits are set in this mask. When a pending failure occurs, the A4 contact asserts the second trip coil in an attempt to open the breaker before the 86 lockout relay is asserted by the SEL-2BFR Relay 86BF Trip output. Logic Mask MA4...

  • Page 142: Other Programmable Output Applications

    The versatility of programmable output contacts allows you to perform many tasks not detailed above. The following examples describe additional programmable output contact applications using the SEL-2BFR Relay. Three-Pole Instantaneous or Time-Delayed Retrip You may use a programmable output contact to perform instantaneous or time-delayed retrip of the protected circuit breaker.

  • Page 143: Loss-Of-Potential Indication

    Hot Resistor Indication When you use the SEL-2BFR Relay breaker resistor thermal protection elements, you can set a programmable output contact to close, indicating when one or more breaker resistor thermal models contain energy above the pending failure or failure level.
  • Page 145 Page 1 of 5 ETTINGS HEET SEL-2BFR R Date ________ FOR THE ELAY Binary-Hexadecimal Conversion Chart Binary Hexadecimal Binary Hexadecimal 0000 1000 0001 1001 0010 1010 0011 1011 0100 1100 0101 1101 0110 1110 0111 1111 Logic Mask Settings (LOGIC Command)
  • Page 146 Page 2 of 5 ETTINGS HEET SEL-2BFR R Date ________ FOR THE ELAY MASK: MA2 (A2 Contact) Hexadecimal Setting ROW #1: Relay Word 50FT 50LD 50MD 52BV Binary Representation ROW #2: Relay Word FOBF FOPF 59F0 ALRM Binary Representation ROW #3: Relay Word...
  • Page 147 Page 3 of 5 ETTINGS HEET SEL-2BFR R Date ________ FOR THE ELAY Hexadecimal MASK: MA5 (A5 Contact) Setting ROW #1: Relay Word 50FT 50LD 50MD 52BV Binary Representation ROW #2: Relay Word FOBF FOPF 59F0 ALRM Binary Representation ROW #3: Relay Word...
  • Page 148 Page 4 of 5 ETTINGS HEET SEL-2BFR R Date ________ FOR THE ELAY Settings Increment Chart Amps in .01 steps Cycles in .25 steps Volts in .01 steps Relay Settings (SET Command) Joules in .01 steps Watts in .01 steps...
  • Page 149 Page 5 of 5 ETTINGS HEET SEL-2BFR R Date ________ FOR THE ELAY Relay Settings (continued) Description Range Flashover Voltage Detector 1.00-67.00 Volts 59FO 62FF Time Delay Pickup 0.25-63.75 cycles 62FF 62FP Time Delay Pickup 0.25-63.75 cycles 62FP Phase Current Magnitude Unbalance Ratio...
  • Page 221 FIGURES Figure B.1: SEL-2BFR, -2 Conventional Terminal Block Model Main Board Troubleshooting Test Points and Jumper Locations.................B-1 Figure B.2: SEL-2BFR, -2 Plug-in Connector Model Main Board Troubleshooting Test Points and Jumper Locations....................B-2 Figure C.1: Nine Pin Connector Pin Number Convention...............C-6 Figure C.2: Horizontal Front and Real Panel Drawings ................C-8...

  • Page 223: Appendix A - Firmware Versions In This Manual

    APPENDIX A - FIRMWARE VERSIONS IN THIS MANUAL This manual covers the SEL-2BFR Relay that contains firmware bearing the following part numbers and revision numbers (most recent firmware listed at top). Firmware Part/Revision No. Description of Firmware This firmware differs from previous versions as follows: Corrected the 62TT timer disable and reset for scheme 1 of the failure to trip for fault logic.
  • Page 224 To find the firmware revision number in your relay, obtain an event report (which identifies the firmware) using the EVENT command. This is an FID number with the Part/Revision number in bold: FID=SEL-BFR-R112-V1-D910212 For a detailed explanation of the FID refer to Section 4: EVENT REPORTING. Appendix A Date Code 20030207 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 225: Appendix B - Internal Diagrams

    APPENDIX B - INTERNAL DIAGRAMS Figure B.1: SEL-2BFR, -2 Conventional Terminal Block Model Main Board Troubleshooting Test Points and Jumper Locations Date Code 990714 Appendix B SEL-2BFR, -2/BFR Instruction Manual...
  • Page 226 Figure B.2: SEL-2BFR, -2 Plug-in Connector Model Main Board Troubleshooting Test Points and Jumper Locations Appendix B Date Code 990714 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 227: Appendix C - Sel-Bfr Specifications

    150 MHz and 450 MHz, randomly keyed on and off one meter from relay. IEC 801-2 Electrostatic Discharge Test (type tested). ESD Test Unit Weight 21 pounds (9.1 kg). Shipping Weight 30 pounds (13.6 kg), including one instruction manual. Date Code 990714 Appendix C SEL-2BFR, -2/BFR Instruction Manual...

  • Page 228: Sel-Bfr Installation

    Lengths of twelve feet or less are recommended, and the cable length should never exceed 100 feet. Use shielded communications cable for lengths greater than ten feet. Modems are required for communications over long distances. Appendix C Date Code 990714 SEL-2BFR, -2/BFR Instruction Manual...

  • Page 229: Jumper Selection

    Output contacts, except TRIP, can be configured as “a” or “b” contacts with soldered wire jumpers K501 through K506 (each jumper has positions A and B). The output contact/soldered wire jumper correspondence is as follows: Date Code 990714 Appendix C SEL-2BFR, -2/BFR Instruction Manual...

  • Page 230: Irig-B Installation

    To synchronize the internal time clock to a source of demodulated IRIG-B time code (e.g., from a satellite clock), connect the time source to the auxiliary input connector on the rear panel. Pin definitions appear in Table C.1. Appendix C Date Code 990714 SEL-2BFR, -2/BFR Instruction Manual...
  • Page 231 Figure C.1. The following cable listings show several types of EIA-232 cables. These and other cables are available from SEL. Cable configuration sheets are also available at no charge for a large number of devices. Contact the factory for more information. Date Code 990714 Appendix C SEL-2BFR, -2/BFR Instruction Manual...
  • Page 232 25-Pin Male Round Conxall “D” Subconnector 20 DTR Cable 422 SEL-BFR Relay **DCE Device 9-Pin Male 25-Pin Male Round Conxall “D” Subconnector TXD (IN) 20 DTR (IN) RXD (OUT) CD (OUT) Appendix C Date Code 990714 SEL-2BFR, -2/BFR Instruction Manual...
  • Page 233 Cable 331A SEL-BFR Relay SEL-PRTU 9-Pin Male 9-Pin Male Round Conxall Round Conxall +IRIG DTE = Data Terminal Equipment (Computer, Terminal, Printer, etc.) ** DCE = Data Communications Equipment (Modem, etc.) Date Code 990714 Appendix C SEL-2BFR, -2/BFR Instruction Manual...
  • Page 234 Figure C.2: Horizontal Front and Real Panel Drawings Appendix C Date Code 990714 SEL-2BFR, -2/BFR Instruction Manual...
  • Page 235 Figure C.3: Vertical Front and Rear Panel Drawings Date Code 990714 Appendix C SEL-2BFR, -2/BFR Instruction Manual...
  • Page 236 Figure C.4: Relay Dimensions, Panel Cutout, and Drill Plan C-10 Appendix C Date Code 990714 SEL-2BFR, -2/BFR Instruction Manual...

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