Schweitzer Engineering Laboratories SEL-787-2 Manual Download Page 1

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Schweitzer Engineering Laboratories, Inc.

SEL-787-2, -3, -4 Data Sheet

As Many as Four-Terminal Differential and REF Protection

New Features

➤

Disconnect control from the Bay Screens application.

➤

Three-position disconnects for increased safety.

➤

A built-in web server that simplifies access to relay data and supports firmware upgrade.

➤

Faster firmware downloads via the Ethernet port.

➤

IEEE 1588-2008 firmware-based Precision Time Protocol (PTP) provides ease of integration.

➤

EtherNet/IP provides ease of integration for industrial automation applications.

➤

IEC 61850 Test Mode support with standard operating modes On, Blocked, Test, Test/Blocked, and Off for easy
commissioning.

SEL-787-2, -3, -4 Transformer
Protection Relays

Summary of Contents for SEL-787-2

Page 1: ... server that simplifies access to relay data and supports firmware upgrade Faster firmware downloads via the Ethernet port IEEE 1588 2008 firmware based Precision Time Protocol PTP provides ease of integration EtherNet IP provides ease of integration for industrial automation applications IEC 61850 Test Mode support with standard operating modes On Blocked Test Test Blocked and Off for easy commis...

Page 2: ...5 IAW1 IBW1 ICW1 IAW2 IBW2 ICW2 1ACI 3AVI 78 79 IN VA VB VC 787 3E 3 Winding Terminal Current Differential 1 Neutral Current Input 3 Voltage Inputs Phase 6 ACI 81 82 85 IAW1 IBW1 ICW1 IAW2 IBW2 ICW2 4 ACI 3 AVI 72 73 76 77 IAW3 IBW3 ICW3 IN VA VB VC 787 3S 3 Winding Terminal Current Differential 3 Voltage Inputs Phase 1 Voltage Input Vsync or Vbat 6 ACI 81 82 85 IAW1 IBW1 ICW1 IAW2 IBW2 ICW2 3 ACI...

Page 3: ...tage X X X 27S VS Channel Undervoltage X 27I Inverse Time Undervoltage X X X 59P Phase Overvoltage X X X 59PP Phase to Phase Overvoltage X X X 59Q Neg Seq Overvoltage X X X 59G Ground Overvoltage X X X 59S VS Channel Overvoltage X 59I Inverse Time Overvoltage X X X 24 Volts Hz X X X 25 Synchronism Check X 32 Directional Power X X X 49RTD Resistance Temperature Detector RTDs X X X X X X 60LOP Loss ...

Page 4: ...ecorder SER reports and oscillographic event reports for rapid commissioning testing and post fault diagnostics Unsolicited SER protocol allows station wide collection of binary SER messages Front Panel HMI Navigate the relay HMI using a 2 x 16 character LCD or optional 5 inch color 800 x 480 pixel touchscreen display Additional Standard Features Further enhance your power system protection by tak...

Page 5: ...tputs and RTD Inputs Single or Dual Ethernet Copper or Fiber Optic Communications Port Σ 51 51 P G 87 87 Overcurrent Phase Ground Neg Seq Breaker Failure Time Overcurrent Phase Ground Neg Seq Overcurrent Time Overcurrent 32 32 24 24 81 81 O U Volts Hertz Frequency Over Under LOP LOP 27P 27P 59 59 Restricted Earth Fault Directional Power Loss of Potential Undervoltage Overvoltage Phase Ground Neg S...

Page 6: ...Single or Dual Ethernet Copper or Fiber Optic Communications Port Σ 51 51 P G 87 87 Overcurrent Time Overcurrent Undervoltage Overvoltage 32 32 24 24 81 81 O U Volts Hertz Frequency LOP LOP 27P 27P 59 59 Synch Check Directional Power Loss of Potential Undervoltage Overvoltage Current Differential 3 52 Battery Backed Clock IRIG B Time Synchronization Instantaneous Differential Harmonic and RMS Mete...

Page 7: ... I O Expansion Additional Contact Inputs Outputs Analog Inputs Outputs and RTD Inputs Single or Dual Ethernet Copper or Fiber Optic Communications Port Σ 51 51 P G 87 87 Current Differential 3 Battery Backed Clock IRIG B Time Synchronization Instantaneous Differential Harmonic and RMS Metering Programmable Pushbuttons and LED Indicators Through Fault Monitoring Transformer Thermal Monitoring Circu...

Page 8: ...rrent Overcurrenta Time Overcurrenta 32 32 24 24 81 81 O U Volts Hertzb Frequencyb LOP LOP 27P 27P 59 59 Restricted Earth Faulta Directional Powerb Loss of Potentialb Undervoltageb Overvoltageb Current Differential 52 Battery Backed Clock IRIG B Time Synchronization Instantaneous Differential Harmonic and RMS Metering Programmable Pushbuttons and LED Indicators Through Fault Monitoring Transformer...

Page 9: ...ansformer applications in or near generating stations A set of unrestrained differential current elements simply compares the differential operating current quantity to a setting value typically about 10 times the TAP setting This pickup setting is only exceeded for internal faults The three independent unrestrained differential elements 87U provide rapid assertion without delay when differential ...

Page 10: ...o trip adjacent breakers using the relays contact out put logic or communications based tripping schemes Breaker failure is initiated by the breaker failure initiate BFI SELOGIC input The BFI input is typically driven by local and remote open trip commands to the breaker Once the BFI input is received the breaker failure element monitors positive and negative sequence current magnitudes and the br...

Page 11: ...tains LOP detection logic on the three phase voltage input to the relay The LOP logic detects open voltage transformer fuses or other conditions that cause a loss of relay sec ondary voltage input The SEL 787 with optional voltage inputs includes LOP logic that detects one two or three potentially open fuses This patented LOP logic is unique because it does not require settings and is univer sally...

Page 12: ...Model Figure 9 Operator Controls 787 3E 3S Models Figure 10 Operator Controls 787 2E 21 2X Models The following operator control descriptions are for factory set logic LOCK The LOCK operator control blocks selected functions Press it for at least three seconds to engage or disengage the lock function When the LOCK pushbutton is engaged the CLOSE operator control is blocked BRKRn Each of the BRKRn ...

Page 13: ... shows the Group 1 settings webpage You can view the settings of each relay settings class by selecting Settings and the respective relay settings class Figure 12 Group 1 Settings Webpage You can upgrade the relay firmware through the relay web server by clicking System File Management available at Access Level 2 and selecting the firmware upgrade file Figure 13 shows the firmware upgrade webpage ...

Page 14: ...ital labels for the SLD to indicate the status of the breaker and disconnects bus voltages and power flow through the breaker In addition to SLDs you can design the screens to show the status of various relay elements via Relay Word bits or to show analog quanti ties for commissioning or day to day operations You can design these screens with the help of Bay Screen Builder in conjunction with Quic...

Page 15: ...ult current and angle per winding primary A 3I2Wn n 1 2 3 4 Negative sequence current and angle per winding primary A IOPz z 1 2 3 Differential operate current scaled to TAP IRTz z 1 2 3 Differential restraint current scaled to TAP InF2 InF4 InF5 n 1 2 3 4 Current harmonics InF2 IOPn for 2nd 4th 5th harmonics Voltages VA VB VC Phase voltages and angles primary volts for wye connected potential tra...

Page 16: ...application that otherwise would require purchasing a separate dedicated phasor measurement unit PMU Use the SEL 787 with SEL communications processors or the SEL 3530 RTAC to change nonlinear state estimation into linear state estimation If all necessary lines include synchrophasor measurements then state estimation is no longer necessary The system state is directly measured Figure 16 Synchropha...

Page 17: ...nhanced voltage option with the monitoring package measure and report the substation battery voltage connected to the VBAT ter minals The relay includes two programmable threshold comparators and associated logic for alarm and control For example if the battery charger fails the measured dc falls below a programmable threshold The SEL 787 alarms to alert operations personnel before the substation ...

Page 18: ...st mode except that the device does not trip any physical contact outputs Off The device does not process any incoming data or control commands except commands to change the mode All protection logic is disabled and all data qual ity is marked as invalid Touchscreen Display You can order the SEL 787 Transformer Protection Relay with an optional touchscreen display 5 inch color 800 x 480 pixels The...

Page 19: ...ion to view the energy metering quantities see Figure 23 A reset feature is provided for the Energy Max Min Demand and Peak Demand applications Tap the Reset button see Figure 23 to navigate to the reset confirmation screen Once you confirm the reset the data are reset to zero Figure 23 Meter Energy Tap the Differential application to view the operate and restraint currents for each differential e...

Page 20: ...ulse output contacts Figure 27 and control the local bits Figure 28 Figure 27 Digital Output Pulsing Slot A Figure 28 Local Bits Device Info Folder Applications Tapping the Device Info folder navigates you to the screen where you can access specific device information applications Status Configuration and Trip Diag Messages and the Reboot application Tap the Status application to view the relay st...

Page 21: ...l operator metering information is not lost while a technician is transferring an event report Fast SER Protocol Provides SER events to an automated data collection system Fast Message Protocol Use this protocol to write remote analog data from other SEL relays or communications processors via unsolicited writes DNP3 Serial or Ethernet based DNP3 protocols Provides default and mappable DNP3 object...

Page 22: ...al tim ers for custom protection or control schemes with 32 general purpose SELOGIC control equation timers Each timer has independent time delay pickup and dropout settings Program each timer input with the element you want e g time qualify a current ele ment Assign the timer output to trip logic transfer trip communications or other control scheme logic Eliminates settings changes Selectable set...

Page 23: ... optic Ethernet ports Set Port 1 Ethernet settings in each relay NETWORK SEL 787 SEL 787 Ethernet Switch SEL 787 SEL 787 NETWORK Set Port 1 Ethernet settings in each relay Cat 5 shielded twisted pair STP cables with RJ45 connectors SEL C627 C628 for copper Ethernet ports OR Fiber optic Ethernet cables with LC connectors SEL C808 for fiber optic Ethernet ports Ethernet Switch A Ethernet Switch B Se...

Page 24: ...analog data that has been measured or calculated by the relay This combination allows you to receive voice message alerts on any phone regarding Relay Word bit transitions in the relay Verbal notification of breaker openings fuse failures RTD alarms etc can be sent directly to your cell phone through the use of your SEL 787 and an SEL 3010 must be connected to an analog telephone line In addition ...

Page 25: ...Schweitzer Engineering Laboratories Inc SEL 787 2 3 4 Data Sheet 25 Relay Dimensions Figure 36 SEL 787 Dimensions for Rack and Panel Mount Models 7 36 187 0 5 47 139 0 i9089b ...

Page 26: ...s 4 Analog Outputs 8 Digital Inputs 8 Digital Outputs IN101 IN102 CONTROL INPUTS INPUT POWER OUTPUT CONTACTS SEL 787 3E Transformer Protection Relay SEL Fiber Optic Cables 240 1506 1 m 3 3 ft ST ST 240 1507 5 m 16 4 ft ST ST 240 1508 15 m 49 2 ft ST ST Other lengths available by request Power Supply 110 240 Vac 24 48 Vdc 110 250 Vdc Optional 485 SEL 2812 compatible ST Fiber Optic Serial Port Optio...

Page 27: ...ion BRKR4 CLOSED OPEN SELECTED LOCK DISABLED ENABLED CLOSE BREAKER CLOSING TRIP BREAKER OPENING AUX 1 BRKR3 CLOSED OPEN SELECTED BRKR2 CLOSED OPEN SELECTED BRKR1 CLOSED OPEN SELECTED SEL 787 TRANSFORMER PROTECTION RELAY ENABLED TRIP DIFFERENTIAL INST OC TOC 87 1 87 2 87 3 Relay Powered Properly Self Tests are Okay Trip Occurred Differential Trip Instantaneous Definite Time Overcurrent Trip Inverse...

Page 28: ... DI 4 DO 1 AO Option LOCK DISABLED ENABLED CLOSE BREAKER CLOSING TRIP BREAKER OPENING AUX 1 BRKR3 CLOSED OPEN SELECTED BRKR2 CLOSED OPEN SELECTED BRKR1 SEL 787 TRANSFORMER PROTECTION RELAY AUX 2 ENABLED TRIP DIFFERENTIAL INST OC TOC O U VOLT O U FREQ V Hz Relay Powered Properly Self Tests are Okay Trip Occurred Differential Trip Instantaneous Definite Time Overcurrent Trip Inverse Time Overcurrent...

Page 29: ... Properly Self Tests are Okay Trip Occurred Differential Trip Instantaneous Definite Time Overcurrent Trip Inverse Time Overcurrent Trip Over Undervoltage Trip Over Underfrequency Trip Volts Hertz Trip SCHWEITZER ENGINEERING LABORATORIES ENT ESC TARGET RESET PORT F TRANSFORMER PROTECTION RELAY SEL 787 AUX 1 TRIP CLOSE BREAKER CLOSING BREAKER OPENING DISABLED LOCK ENABLED AUX3 AUX2 CLOSED OPEN BRKR...

Page 30: ...ou can configure A phase and B phase of Winding 3 on the relay for REF protection for Windings 1 and 2 respectively You can configure C phase of Winding 3 along with the RTD thermal elements to provide fan bank control and protection Use additional RTD thermal elements to monitor LTC tank temperatures and SELOGIC programming to indicate temperature differential alarms between transformer and LTC t...

Page 31: ...2 H1 B2 H2 C2 H3 a T1 b T2 c T3 Fiber Port SEL 2600 N L E01 E03 E04 E06 E08 E05 E07 E09 E10 E12 E02 A2 B2 C2 Z01 Z02 Z03 Z04 Z05 Z06 52 2 Z07 Z08 Z09 Z10 Z11 Z12 IAW3 IBW3 ICW3 IAW4 IBW4 ICW4 IAW1 IBW1 ICW1 IAW2 IBW2 ICW2 RTDs E11 Ambient Temp Top Oil Temp LTC Note The CT secondary circuit should be grounded in the relay cabinet 2000 5 A 13 8 kV 30 MVA 69 kV 200 5 A IBW3 IAW3 A1 B1 C1 400 5 A a b ...

Page 32: ...otection 52 1 a b c 52 3 A B C SEL 787 3E Relay IAW3 IBW3 ICW3 IN IBW2 ICW2 Delta Tertiary E01 E02 E03 E04 E05 E06 E07 E08 Z09 Z10 Z11 Z12 52 2 a b c Z01 Z02 Z03 Z04 Z05 Z06 IAW1 IBW1 ICW1 Z08 Z07 IAW2 A H1 B H2 C H3 a X1 c X3 b X2 Note The CT secondary circuit should be grounded in the relay cabinet E12 E10 E09 E11 VN VC VB VA 150 5 A 230 kV 50 MVA 138 kV 250 5 A 138 kV 250 5 A H3 H2 H1 X3 X2 X1 ...

Page 33: ...tion OUT101 HALARM OUT103FS N OUT302 TRIP2 OUT101FS Y 52A1 IN401 OUT303 TRIP3 OUT102 0 52A2 IN402 OUT305 CLOSE1 OUT103 TRIPXFMR 52A3 IN403 OUT306 CLOSE2 OUT301 TRIP1 OUT307 CLOSE3 DC IN401 IN402 D09 D11 A01 A02 D12 A03 A04 OUT101 OUT102 OUT103 OUT301 OUT302 OUT305 OUT306 A05 A07 C01 C03 C09 C11 SEL 787 Partial A06 A08 C02 C04 C10 C12 Relay Fail ANN 86T b 86T op 86T a 86T a 52 1 a 52 2 a 52 1 TC 52...

Page 34: ...rms symmetrical Saturation Current Rating Linear to 96 A symmetrical 1 Second Thermal 500 A Burden per phase 0 1 VA 5 A INOM 1 A Continuous Rating 3 INOM 85 C 4 INOM 55 C A D Measurement Limit 43 A peak 31 A rms symmetrical Saturation Current Rating Linear to 19 2 A symmetrical 1 Second Thermal 100 A Burden per phase 0 01 VA 1 A AC Voltage Inputs VNOM kV L L PT Ratio Range 100 250 V if DELTA_Y DEL...

Page 35: ...C 15 Operational Voltage Ue 120 Vac 240 Vac Operational Current Ie 3 A 1 5 A Make Current 30 A 15 A Break Current 3 A 1 5 A Electromagnetic loads 72 VA PF 0 3 50 60 Hz AC Output Ratings See AC Output Ratings for Standard Contacts Optoisolated Control Inputs When Used With DC Control Signals Pickup Dropout Time Depends on the input debounce settings 250 V ON for 200 312 5 Vdc OFF below 150 Vdc 220 ...

Page 36: ... card Option 2 DeviceNet communications card Communications Protocols SEL Modbus RTU and TCP IP DNP3 serial and LAN WAN FTP Telnet SNTP IEEE 1588 2008 firmware based PTP IEC 61850 Edition 2 IEC 60870 5 103 EtherNet IP PRP MIRRORED BITS Communications EVMSG IEEE C37 118 synchrophasors and DeviceNet Operating Temperature IEC Performance Rating 40 to 85 C 40 to 185 F per IEC EN 60068 2 1 and 60068 2 ...

Page 37: ...act I O ac current and voltage inputs 0 5 J 530 V on analog outputs IEEE C37 90 2005 Severity Level 0 5 J 5 kV 0 5 J 530 V on analog outputs RFI and Interference Tests EMC Immunity Electrostatic Discharge Immunity IEC 61000 4 2 2008 IEC 60255 26 2013 Section 7 2 3 IEEE C37 90 3 2001 Severity Level 4 8 kV contact discharge 15 kV air discharge Radiated RF Immunity IEC 61000 4 3 2010 IEC 60255 26 201...

Page 38: ...kup Setting Range A secondary 5 A Model 0 50 16 00 A 0 01 A steps 1 A Model 0 10 3 20 A 0 01 A steps Accuracy 5 of setting plus 0 02 INOM A secondary steady state pickup Time Dial U S 0 50 15 00 0 01 steps IEC 0 05 1 00 0 01 steps Accuracy 1 5 cycles plus 4 between 2 and 30 multiples of pickup within rated range of current Differential 87 Unrestrained Pickup Range 1 0 20 0 in per unit of TAP Restr...

Page 39: ...Range VA secondary 5 A Model 1 0 6500 0 VA 0 1 VA steps 1 A Model 0 2 1300 0 VA 0 1 VA steps Accuracy 0 10 A L L voltage secondary and 5 of setting at unity power factor for power elements and zero power factor for reactive power element 5 A nominal 0 02 A L L voltage secondary and 5 of setting at unity power factor for power elements and zero power factor for reactive power element 1 A nominal Pi...

Page 40: ...e to Ground Voltages 1 of reading 1 for voltages within 24 264 V Voltage Harmonics 5 of reading plus 0 5 V V1 Positive Sequence Voltage 2 of reading for voltages within 24 264 V 3V2 Negative Sequence Voltage 2 of reading for voltages within 24 264 V Real Three Phase Power kW 3 of reading for 0 10 pf 1 00 Reactive Three Phase Power kVAR 3 of reading for 0 00 pf 0 90 Apparent Three Phase Power kVA 3...

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