Sel SEL-351A User manual

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SEL-351A
DISTRIBUTION PROTECTION SYSTEM
DIRECTIONAL OVERCURRENT RELAY
RECLOSING RELAY
FAULT LOCATOR
INTEGRATION ELEMENT STANDARD
INSTRUCTION MANUAL
SCHWEITZER ENGINEERING LABORATORIES, INC.
2350 NE HOPKINS COURT
PULLMAN, WA USA 99163-5603
TEL: [phone] FAX: [phone]

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The software (firmware), schematic drawings, relay commands, and relay messages are copyright protected by the United States Copyright Law and
International Treaty provisions. ll rights are reserved.
You may not copy, alter, disassemble, or reverse-engineer the software. You may not provide the software to any third party.
ll brand or product names appearing in this document are the trademark or registered trademark of their respective holders.
Schweitzer Engineering Laboratories, SELOGIC, Connectorized, Job Done, SEL-PROFILE, and are registered trademarks of Schweitzer Engineering
Laboratories.
The English language manual is the only approved SEL manual.
Copyright © SEL 1999, 2000, 2001 ( ll rights reserved) Printed in US .
This product is covered by U.S. Patent Numbers: 5,041,737; 5,208,545; 5,317,472; 5,349,490; 5,365,396; 5,367,426; 5,479,315; 5,515,227; 5,602,707;
5,694,281; 5,790,418; 5,883,578. U.S. Patent(s) Pending, and Foreign Patent(s) Issued and Pending.
This product is covered by the standard SEL 10-year warranty. For warranty details, visit www.selinc.com or contact your customer service
representative.

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Date Code 20010808 Manual Change Information i
SEL-351A Instru tion Manual
MANUAL CHANGE INFORMATION 
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SEL-351A Instru tion Manual
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Date Code 20010808 Manual Change Information iii
SEL-351A Instru tion Manual
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SEL-351A Instru tion Manual
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Date Code 20010808 Table of Contents i
SEL-351A Instruction Manual
SEL-351A INSTRUCTION MANUAL
TABLE OF CONTENTS
SECTION 1: INTRODUCTION AND SPECIFICATIONS
SECTION 2: INSTALLATION
SECTION 3: OVERCURRENT, VOLTAGE, SYNCHRONISM CHECK, AND
FREQUENCY ELEMENTS
SECTION 4: LOSS-OF-POTENTIAL, LOAD ENCROACHMENT, AND
DIRECTIONAL ELEMENT LOGIC
SECTION 5: TRIP AND TARGET LOGIC
SECTION : CLOSE AND RECLOSE LOGIC
SECTION 7: INPUTS, OUTPUTS, TIMERS, AND OTHER CONTROL LOGIC
SECTION 8: BREAKER MONITOR AND METERING
SECTION 9: SETTING THE RELAY
SECTION 10: SERIAL PORT COMMUNICATIONS AND COMMANDS
SECTION 11: FRONT-PANEL INTERFACE (ONLY ON MODELS WITH LCD)
SECTION 12: STANDARD EVENT REPORTS AND SER
SECTION 13: TESTING AND TROUBLESHOOTING
SECTION 14: APPENDICES
Appendix A: Firmware Versions
Appendix B: Firmware Upgrade Instructions
Appendix C: SEL Distributed Port Switch Protocol
Appendix D: Configuration,
Fast Meter , and Fast Operate Commands
Appendix E: Compressed ASCII Commands
Appendix F: Setting Negative-Sequence Overcurrent Elements
Appendix G: Setting SELOGIC® Control Equations
Appendix H: Distributed Network Protocol (DNP) 3.00
Appendix I: Using SEL-251 and SEL-2 7 Relay Settings in the
SEL-351A Relay
Appendix J: SEL-5030 ACSELERATOR™
SECTION 15: SEL-351 RELAY COMMAND SUMMARY

Date Code 20010808 Introduction and Specifications i
SEL-351A Instruction Manual
TABLE OF CONTENTS
SECTION 1:INTRODUCTION AND SPECIFICATIONS.......................... 1-1
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0HWHULQJ$FFXUDF\  
TABLES 
7DEOH 6(/$5HOD\0RGHOV  
FIGURES
)LJXUH 6(/$5HOD\V$SSOLHG7KURXJKRXWWKH3RZHU6\VWHP  
)LJXUH 6(/$5HOD\,QSXWV2XWSXWVDQG&RPPXQLFDWLRQV3RUWV 
)LJXUH 6(/$5HOD\&RPPXQLFDWLRQV&RQQHFWLRQV([DPSOHV  
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