Schweitzer Engineering Laboratories SEL-351A User manual

20080213
SEL-351A, -1 Relay
Distribution Protection
System
Instruction Manual
*PM351A-01-NB*
Courtesy of NationalSwitchgear.com

SEL-351A Relay Instruction Manual Date Code 20080213
The relay contains devices sensitive to Electrostatic Discharge
(ESD). When working on the relay with the front panel removed,
work surfaces and personnel must be properly grounded or
equipment damage may result.
!
CAUTION
There is danger of explosion if the battery is incorrectly
replaced. Replace only with Ray-O-Vac®no. BR2335 or
equivalent recommended by manufacturer. Dispose of used
batteries according to the manufacturer’s instructions.
!
CAUTION
Never apply voltage signals greater than 9 V peak-peak to the
low-level test interface (J10) or equipment damage may result.
!
CAUTION
This device is shipped with default passwords. Default
passwords should be changed to private passwords at
installation. Failure to change each default password to a
private password may allow unauthorized access. SEL shall not
be responsible for any damage resulting from unauthorized
access.
!
WARNING
Have only qualified personnel service this equipment. If you are
not qualified to service this equipment, you can injure yourself
or others, or cause equipment damage.
!
WARNING
Use of this equipment in a manner other than specified in this
manual can impair operator safety safeguards provided by this
equipment.
!
WARNING
Contact with instrument terminals can cause electrical shock
that can result in injury or death.
!
DANGER
Le relais contient des pièces sensibles aux décharges
électrostatiques. Quand on travaille sur le relais avec les
panneaux avant ou du dessus enlevés, toutes les surfaces et le
personnel doivent être mis à la terre convenablement pour
éviter les dommages à l’équipement.
!
ATTENTION
Il y a un danger d’explosion si la pile électrique n’est pas
correctement remplacée. Utiliser exclusivement Ray-O-Vac®
No. BR2335 ou un équivalent recommandé par le fabricant. Se
débarrasser des piles usagées suivant les instructions du
fabricant.
!
ATTENTION
Au risque de causer des dommages à l’équipement, ne jamais
appliquer un signal de tension supérieur à 9 V crête à crête à
l’interface de test de bas niveau (J10).
!
ATTENTION
Cet appareil est expédié avec des mots de passe par défaut. A
l’installation, les mots de passe par défaut devront être
changés pour des mots de passe confidentiels. Dans le cas
contraire, un accés non-autorisé á l’équipement peut être
possible. SEL décline toute responsabilité pour tout dommage
résultant de cet accés non-autorisé.
!
AVERTISSEMENT
Seules des personnes qualifiées peuvent travailler sur cet
appareil. Si vous n’êtes pas qualifiés pour ce travail, vous
pourriez vous blesser avec d’autres personnes ou endommager
l’équipement.
!
AVERTISSEMENT
L’utilisation de cet appareil suivant des procédures différentes
de celles indiquées dans ce manuel peut désarmer les
dispositifs de protection d’opérateur normalement actifs sur
cet équipement.
!
AVERTISSEMENT
Tout contact avec les bornes de l’appareil peut causer un choc
électrique pouvant entraîner des blessuers ou la mort.
!
DANGER
© 1999–2008 by Schweitzer Engineering Laboratories, Inc. All rights reserved.
All brand or product names appearing in this document are the trademark or registered trademark of their respective holders. No SEL
trademarks may be used without written permission. SEL products appearing in this document may be covered by US and Foreign patents.
Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and international copyright and patent laws in
its products, including without limitation software, firmware, and documentation.
The information in this manual is provided for informational use only and is subject to change without notice. Schweitzer Engineering
Laboratories, Inc. has approved only the English language manual.
This product is covered by the standard SEL 10-year warranty. For warranty details, visit www.selinc.com or contact your customer service
representative. PM351A-01
Courtesy of NationalSwitchgear.com

Date Code 20080213 Instruction Manual SEL-351A Relay
Table of Contents
List of Tables ........................................................................................................................................................ v
List of Figures..................................................................................................................................................... ix
Preface ................................................................................................................................................................. xv
Section 1: Introduction and Specifications
Overview ......................................................................................................................................................... 1.1
SEL-351A Models........................................................................................................................................... 1.2
Applications..................................................................................................................................................... 1.6
Hardware Connection Features ....................................................................................................................... 1.7
Communications Connections......................................................................................................................... 1.9
Specifications ................................................................................................................................................ 1.10
Section 2: Installation
Overview ......................................................................................................................................................... 2.1
Relay Mounting ............................................................................................................................................... 2.2
Front-Panel and Rear-Panel Connection Diagrams......................................................................................... 2.4
Making Rear-Panel Connections ................................................................................................................... 2.10
SEL-351A AC/DC Connection Diagrams for Various Applications ............................................................ 2.20
Circuit Board Connections ............................................................................................................................ 2.34
Section 3: Overcurrent, Voltage, Synchronism Check, and Frequency Elements
Instantaneous/Definite-Time Overcurrent Elements ....................................................................................... 3.1
Time-Overcurrent Elements .......................................................................................................................... 3.16
Voltage Elements ........................................................................................................................................... 3.28
Synchronism Check Elements (Not in SEL-351A-1) ................................................................................... 3.36
Frequency Elements ...................................................................................................................................... 3.49
Section 4: Loss-of-Potential, Load Encroachment, and Directional Element Logic
Loss-of-Potential Logic (Not in the SEL-351A-1).......................................................................................... 4.1
Load-Encroachment Logic (Not in SEL-351A-1)........................................................................................... 4.4
Directional Control for Neutral-Ground and Residual-Ground
Overcurrent Elements (Not in SEL-351A-1) ................................................................................................ 4.9
Directional Control for Negative-Sequence and Phase Overcurrent Elements (Not in SEL-351A-1).......... 4.30
Directional Control Settings (Not in SEL-351A-1)....................................................................................... 4.38
Directional Control Provided by Torque Control Settings (Not in SEL-351A-1)......................................... 4.57
Section 5: Trip and Target Logic
Trip Logic ........................................................................................................................................................ 5.1
Switch-Onto-Fault (SOTF) Trip Logic............................................................................................................ 5.7
Front-Panel Target LEDS .............................................................................................................................. 5.10
Section 6: Close and Reclose Logic
Overview ......................................................................................................................................................... 6.1
Close Logic...................................................................................................................................................... 6.2
Reclose Supervision Logic .............................................................................................................................. 6.5
Reclosing Relay............................................................................................................................................. 6.12
Section 7: Inputs, Outputs, Timers, and Other Control Logic
Overview ......................................................................................................................................................... 7.1
Optoisolated Inputs.......................................................................................................................................... 7.2
Local Control Switches (Only on Models With LCD).................................................................................... 7.5
Remote Control Switches ................................................................................................................................ 7.9
Latch Control Switches ................................................................................................................................. 7.11
Courtesy of NationalSwitchgear.com

ii
SEL-351A Relay Instruction Manual Date Code 20080213
Table of Contents
Multiple Setting Groups.................................................................................................................................7.18
SELOGIC Control Equation Variables/Timers................................................................................................7.27
Output Contacts .............................................................................................................................................7.31
Rotating Default Display (Only on Models With LCD)................................................................................7.34
Section 8: Breaker Monitor and Metering
Overview..........................................................................................................................................................8.1
Breaker Monitor...............................................................................................................................................8.2
Station DC Battery Monitor (Not in SEL-351A-1) .......................................................................................8.15
Demand Metering ..........................................................................................................................................8.20
Energy Metering ............................................................................................................................................8.28
Maximum/Minimum Metering ......................................................................................................................8.29
Small Signal Cutoff for Metering ..................................................................................................................8.31
Synchrophasor Metering................................................................................................................................8.32
Section 9: Setting the Relay
Overview..........................................................................................................................................................9.1
Settings Changes Via the Front Panel (Only on Models With LCD) ..............................................................9.2
Settings Changes Via the Serial Port ...............................................................................................................9.2
Time-Overcurrent Curves ................................................................................................................................9.4
Relay Word Bits (Used in SELOGIC Control Equations)...............................................................................9.16
Settings Explanations.....................................................................................................................................9.34
Settings Sheets ...............................................................................................................................................9.42
SEL-351A Settings Sheets
SEL-351A-1 Settings Sheets
Section 10: Serial Port Communications and Commands
Overview........................................................................................................................................................10.1
Port Connector and Communications Cables ................................................................................................10.2
Communications Protocol..............................................................................................................................10.6
Serial Port Automatic Messages....................................................................................................................10.9
Serial Port Access Levels.............................................................................................................................10.10
Command Summary ....................................................................................................................................10.12
Command Explanations ...............................................................................................................................10.14
SEL-351A Command Summary
Section 11: Front-Panel Interface (Only on Models With LCD)
Overview........................................................................................................................................................11.1
Front-Panel Pushbutton Operation.................................................................................................................11.2
Functions Unique to the Front-Panel Interface..............................................................................................11.6
Rotating Default Display .............................................................................................................................11.12
Section 12: Standard Event Reports and SER
Overview........................................................................................................................................................12.1
Standard 15/30-Cycle Event Reports.............................................................................................................12.2
Sequential Events Recorder (SER) Report ..................................................................................................12.21
Example Standard 15-Cycle Event Report ..................................................................................................12.24
Example Sequential Events Recorder (SER) Report ...................................................................................12.30
Section 13: Testing and Troubleshooting
Overview........................................................................................................................................................13.1
Testing Philosophy.........................................................................................................................................13.2
Testing Methods and Tools ............................................................................................................................13.5
Relay Self-Tests .............................................................................................................................................13.9
Relay Troubleshooting.................................................................................................................................13.11
Relay Calibration .........................................................................................................................................13.13
Courtesy of NationalSwitchgear.com

iii
Date Code 20080213 Instruction Manual SEL-351A Relay
Table of Contents
Factory Assistance....................................................................................................................................... 13.14
Appendix A: Firmware and Manual Versions
Firmware......................................................................................................................................................... A.1
Instruction Manual.......................................................................................................................................... A.7
Appendix B: Firmware Upgrade Instructions
Overview .........................................................................................................................................................B.1
Relay Firmware Upgrade Instructions.............................................................................................................B.2
Ethernet Port Firmware Upgrade Instructions...............................................................................................B.19
Appendix C: SEL Distributed Port Switch Protocol
Overview .........................................................................................................................................................C.1
Settings ............................................................................................................................................................C.2
Operation .........................................................................................................................................................C.3
Appendix D: Configuration, Fast Meter, and Fast Operate Commands
Overview ........................................................................................................................................................ D.1
Message Lists ................................................................................................................................................. D.2
Message Definitions ....................................................................................................................................... D.3
Appendix E: Compressed ASCII Commands
Overview .........................................................................................................................................................E.1
CASCII Command—General Format .............................................................................................................E.2
CASCII Command—SEL-351A .....................................................................................................................E.4
CSTATUS Command—SEL-351A .................................................................................................................E.5
CHISTORY Command—SEL-351A ..............................................................................................................E.6
CEVENT Command—SEL-351A ..................................................................................................................E.7
Appendix F: Setting Negative-Sequence Overcurrent Elements
Setting Negative-Sequence Definite-Time Overcurrent Elements .................................................................. F.1
Setting Negative-Sequence Time-Overcurrent Elements ................................................................................ F.2
Coordinating Negative-Sequence Overcurrent Elements................................................................................ F.3
Other Negative-Sequence Overcurrent Element References........................................................................... F.8
Appendix G: Setting SELOGIC Control Equations
Overview ........................................................................................................................................................ G.1
Relay Word Bits.............................................................................................................................................. G.2
SELOGIC Control Equations........................................................................................................................... G.4
Processing Order and Processing Interval.................................................................................................... G.12
Appendix H: Distributed Network Protocol
Overview ........................................................................................................................................................ H.1
Configuration.................................................................................................................................................. H.2
EIA-232 Physical Layer Operation ................................................................................................................ H.4
Data-Link Operation....................................................................................................................................... H.5
Data Access Method....................................................................................................................................... H.6
Device Profile ................................................................................................................................................. H.7
Object Table.................................................................................................................................................... H.9
Data Map ...................................................................................................................................................... H.14
Point Remapping .......................................................................................................................................... H.20
DNP Settings Sheets
SET: Appendix I: Using the SEL-251 and SEL-267 Relay Settings in the SEL-351A Relay
Overview ..........................................................................................................................................................I.1
Main Differences Between Settings for the SEL-251, SEL-267, and SEL-351A Relays................................I.2
Other Differences Between the SEL-351A and the SEL-251-3 and SEL-267-5 Relays .................................I.5
Courtesy of NationalSwitchgear.com

iv
SEL-351A Relay Instruction Manual Date Code 20080213
Table of Contents
Appendix J: SEL-351A Fast SER Protocol
Overview.......................................................................................................................................................... J.1
Make Sequential Events Recorder (SER) Settings With Care......................................................................... J.2
Recommended Message Usage ....................................................................................................................... J.3
Functions and Function Codes......................................................................................................................... J.4
Appendix K: ACSELERATOR QuickSet SEL-5030 Software
Overview.........................................................................................................................................................K.1
ACSELERATOR QuickSet System Requirements ............................................................................................K.2
Installation ......................................................................................................................................................K.3
Starting ACSELERATOR QuickSet...................................................................................................................K.4
Appendix L: SEL Synchrophasors
Overview......................................................................................................................................................... L.1
Introduction..................................................................................................................................................... L.2
Synchrophasor Measurement.......................................................................................................................... L.3
External Equipment Compensation ................................................................................................................ L.4
Protocol Operation.......................................................................................................................................... L.5
Settings............................................................................................................................................................ L.8
Synchrophasor Relay Word Bits................................................................................................................... L.11
View Synchrophasors by Using the MET PM Command ............................................................................ L.12
Communications Bandwidth......................................................................................................................... L.14
Courtesy of NationalSwitchgear.com

Date Code 20080213 Instruction Manual SEL-351A Relay
List of Tables
Table 1.1 SEL-351A Models.................................................................................................................. 1.2
Table 1.2 SEL-351A-1 Models .............................................................................................................. 1.2
Table 1.3 Major Differences—SEL-351, SEL-351A, and SEL-351A-1 ............................................... 1.3
Table 2.1 Communications Cables to Connect the SEL-351A to Other Devices ................................ 2.19
Table 2.2 Output Contact Jumpers and Corresponding Output Contacts ............................................ 2.36
Table 2.3 “Extra Alarm” Output Contacts and Corresponding Controlling Jumpers.......................... 2.36
Table 2.4 Required Position of Jumper JMP23 for Desired Output Contact OUT107 Operation....... 2.36
Table 2.5 Password and Breaker Jumper Positions for Standard Relay Shipments............................. 2.37
Table 2.6 Password and Breaker Jumper Operation ............................................................................ 2.37
Table 2.7 EIA-232 Serial Port Voltage Jumper Positions for Standard Relay Shipments ................... 2.37
Table 3.1 Available Phase Time-Overcurrent Elements....................................................................... 3.16
Table 3.2 Phase Time-Overcurrent Element (Maximum Phase) Settings............................................ 3.16
Table 3.3 Phase Time-Overcurrent Element (Maximum Phase) Logic Outputs.................................. 3.17
Table 3.4 Neutral-Ground Time-Overcurrent Element Settings .......................................................... 3.23
Table 3.5 Available Residual-Ground Time-Overcurrent Elements .................................................... 3.24
Table 3.6 Residual-Ground Time-Overcurrent Element 51GT Settings.............................................. 3.24
Table 3.7 Residual-Ground Time-Overcurrent Element 51G2T Settings............................................ 3.25
Table 3.8 Negative-Sequence Time-Overcurrent Element Settings ..................................................... 3.27
Table 3.9 Voltage Values Used by Voltage Elements........................................................................... 3.28
Table 3.10 Voltage Elements Settings and Settings Ranges (Wye-Connected PTs).............................. 3.28
Table 3.11 Voltage Elements Settings and Settings Ranges (VS Channel) ........................................... 3.29
Table 3.12 Voltage Elements Settings and Settings Ranges (Delta-Connected PTs)............................. 3.29
Table 3.13 Synchronism Check Elements Settings and Settings Ranges .............................................. 3.36
Table 3.14 Frequency Elements Settings and Settings Ranges.............................................................. 3.51
Table 4.1 Available Ground Directional Elements............................................................................... 4.11
Table 4.2 Best Choice Ground Directional Element™ Logic.............................................................. 4.12
Table 4.3 Ground Directional Element Availability by Voltage Connection Settings ......................... 4.13
Table 4.4 Overcurrent Elements Controlled by Level Direction Settings DIR1–DIR4
(Corresponding Overcurrent Element Figure Numbers in Parentheses) .......................... 4.39
Table 4.5 Affect of Global Settings VSCONN and PTCONN on
Petersen Coil Directional Elements.................................................................................. 4.55
Table 5.1 SEL-351A Front-Panel Target LED Definitions .................................................................. 5.10
Table 6.1 Relay Word Bit and Front-Panel Correspondence to Reclosing Relay States ..................... 6.13
Table 6.2 Reclosing Relay Timer Settings and Setting Ranges ........................................................... 6.15
Table 6.3 Shot Counter Correspondence to Relay Word Bits and Open Interval Times ..................... 6.18
Table 6.4 Reclosing Relay SELOGIC Control Equation Settings ......................................................... 6.18
Table 6.5 Example Open Interval Time Settings ................................................................................. 6.24
Table 7.1 Correspondence Between Local Control Switch Positions and Label Settings..................... 7.5
Table 7.2 Correspondence Between Local Control Switch Types and Required Label Settings........... 7.6
Table 7.3 Definitions for Active Setting Group Indication Relay Word Bits SG1 Through SG6 ....... 7.18
Table 7.4 Definitions for Active Setting Group Switching
SELOGIC Control Equation Settings SS1–SS6................................................................. 7.18
Table 7.5 SELOGIC Control Equation Settings for Switching Active
Setting Group Between Setting Groups 1 and 4............................................................... 7.20
Table 7.6 Active Setting Group Switching Input Logic....................................................................... 7.22
Table 7.7 SELOGIC Control Equation Settings for Rotating Selector
Switch Active Setting Group Switching........................................................................... 7.23
Table 7.8 Mnemonic Settings for Metering on the Rotating Default Display ..................................... 7.41
Table 7.9 Mnemonic Settings for Breaker Wear Monitor Values on the Rotating Default Display .... 7.45
Table 7.10 Mnemonic Settings for Time-Overcurrent (TOC) Element Pickups
on the Rotating Default Display ....................................................................................... 7.47
Table 7.11 Mnemonic Settings for Time-Overcurrent (TOC) Element Pickups Using the
Same-Line-Label Format on the Rotating Default Display.............................................. 7.47
Table 8.1 Breaker Maintenance Information for a 25 kV Circuit Breaker ............................................ 8.2
Courtesy of NationalSwitchgear.com

vi List of Tables
SEL-351A Relay Instruction Manual Date Code 20080213
Table 8.2 Breaker Monitor Settings and Settings Ranges ......................................................................8.4
Table 8.3 Demand Meter Settings and Settings Range ........................................................................8.24
Table 8.4 Operation of Maximum/Minimum Metering With Directional Power Quantities ...............8.29
Table 9.1 Serial Port SET Commands....................................................................................................9.1
Table 9.2 Set Command Editing Keystrokes..........................................................................................9.2
Table 9.3 Equations Associated With U.S. Curves ................................................................................9.4
Table 9.4 Equations Associated With IEC Curves .................................................................................9.4
Table 9.5 SEL-351A Relay Word Bits .................................................................................................9.16
Table 9.6 Relay Word Bit Definitions for SEL-351A ..........................................................................9.18
Table 9.7 Main Relay Functions That Change With VSCONN, When PTCONN = WYE .................9.37
Table 9.8 Main Relay Functions That Change With VSCONN, When PTCONN = DELTA..............9.38
Table 9.9 Main Relay Functions That Change With VNOM = OFF....................................................9.38
Table 10.1 SEL-351A Available Serial Ports .........................................................................................10.1
Table 10.2 Pinout Functions for EIA-232 Serial Ports 2, 3, and F.........................................................10.2
Table 10.3 Terminal Functions for EIA-485 Serial Port 1 .....................................................................10.2
Table 10.4 Serial Communications Port Pin/Terminal Function Definitions.........................................10.4
Table 10.5 Serial Port Automatic Messages...........................................................................................10.9
Table 10.6 Serial Port Command Summary .........................................................................................10.12
Table 10.7 SEL-351A Word and Its Correspondence to TAR Command............................................10.31
Table 10.8 SEL-351A Control Subcommands .....................................................................................10.37
Table 10.9 Valid Password Characters .................................................................................................10.38
Table 12.1 Event Types...........................................................................................................................12.5
Table 12.2 Standard Event Report Current, Voltage, and Frequency Columns .....................................12.9
Table 12.3 Output, Input, and Protection, and Control Element Event Report Columns.....................12.12
Table 13.1 Test Features Provided by the Relay.....................................................................................13.5
Table 13.2 Resultant Scale Factors for Input Module ............................................................................13.6
Table 13.3 Relay Self-Tests ....................................................................................................................13.9
Table A.1 SEL-351A Firmware Revision History .................................................................................A.1
Table A.2 SEL-351A-1 Firmware Revision History..............................................................................A.5
Table A.3 Instruction Manual Revision History.....................................................................................A.7
Table B.1 Troubleshooting New Firmware Upload ............................................................................. B.14
Table D.1 Binary Message List ..............................................................................................................D.2
Table D.2 ASCII Configuration Message List .......................................................................................D.2
Table D.3 A5C0 Relay Definition Block ...............................................................................................D.3
Table D.4 A5C1 Fast Meter Configuration Block..................................................................................D.3
Table D.5 A5D1 Fast Meter Data Block ................................................................................................D.5
Table D.6 A5C2/A5C3 Demand/Peak Demand Fast Meter Configuration Messages...........................D.5
Table D.7 A5D2/A5D3 Demand/Peak Demand Fast Meter Message ...................................................D.8
Table D.8 A5CE Fast Operate Configuration Block ..............................................................................D.9
Table D.9 A5E0 Fast Operate Remote Bit Control ..............................................................................D.10
Table D.10 A5E3 Fast Operate Breaker Control....................................................................................D.11
Table D.11 A5CD Fast Operate Reset Definition Block........................................................................D.11
Table D.12 A5ED Fast Operate Reset Command .................................................................................. D.12
Table E.1 Mapping Labels to Bits.......................................................................................................... E.9
Table G.1 SELOGIC Control Equation Operators (Listed in Processing Order) ....................................G.4
Table G.2 SELOGIC Control Equation Settings Limitations ................................................................G.10
Table G.3 Processing Order of Relay Elements and Logic (Top to Bottom) .......................................G.12
Table H.1 Settings to Configure a Port for DNP....................................................................................H.2
Table H.2 Settings to Configure a Port for Extended Mode DNP..........................................................H.2
Table H.3 Data Access Methods ............................................................................................................H.6
Table H.4 SEL-351A DNP3 Device Profile...........................................................................................H.7
Table H.5 SEL-351A DNP Object Table ...............................................................................................H.9
Table H.6 SEL-351A DNP Data Map ..................................................................................................H.14
Table H.7 Analog 105 Upper-Byte Definitions....................................................................................H.17
Table H.8 Analog 105 Lower-Byte Definitions ...................................................................................H.17
Table H.9 Control Field........................................................................................................................ H.17
Table J.1 Message Format for Function Code 01 .................................................................................. J.4
Table J.2 Message Format for Function Code 02 .................................................................................. J.5
Courtesy of NationalSwitchgear.com

viiList of Tables
Date Code 20080213 Instruction Manual SEL-351A Relay
Table J.3 Message Format for Function Code 18...................................................................................J.5
Table J.4 Message if SER Records Are Lost..........................................................................................J.6
Table J.5 Acknowledge Message Format ...............................................................................................J.7
Table L.1 SEL Fast Message Protocol Format .......................................................................................L.5
Table L.2 Unsolicited Fast Message Enable Packet ...............................................................................L.6
Table L.3 Unsolicited Fast Message Disable Packet ..............................................................................L.6
Table L.4 Permissible Message Periods Requested by Enable Message ...............................................L.7
Table L.5 SEL-351A Global Settings for Synchrophasors.....................................................................L.8
Table L.6 SEL-351A Serial Port Settings for Synchrophasors ..............................................................L.8
Table L.7 Time Synchronization Relay Word Bits...............................................................................L.11
Table L.8 SEL Fast Message Voltage and Current Selections Based on PHDATAV and PHDATAI...L.14
Courtesy of NationalSwitchgear.com

This page intentionally left blank
Courtesy of NationalSwitchgear.com