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SEL-351S Relay Instruction Manual Date Code 20080103
Table of Contents
Section 7: Inputs, Outputs, Timers, and Other Control Logic
Optoisolated Inputs..........................................................................................................................................7.2
Local Control Switches....................................................................................................................................7.6
Remote Control Switches ..............................................................................................................................7.10
Latch Control Switches..................................................................................................................................7.12
Multiple Setting Groups.................................................................................................................................7.19
SEL
OGIC Control Equation Variables/Timers................................................................................................7.28
Output Contacts .............................................................................................................................................7.32
Rotating Default Display ...............................................................................................................................7.36
Section 8: Breaker Monitor, Metering, and Load Profile Functions
Introduction......................................................................................................................................................8.1
Breaker Monitor...............................................................................................................................................8.2
Station DC Battery Monitor...........................................................................................................................8.15
Demand Metering ..........................................................................................................................................8.20
Energy Metering ............................................................................................................................................8.29
Maximum/Minimum Metering ......................................................................................................................8.30
Small Signal Cutoff for Metering ..................................................................................................................8.32
Synchrophasor Metering................................................................................................................................8.33
Load Profile Report (Available in Firmware Versions 6 and 7).....................................................................8.34
Section 9: Setting the Relay
Introduction......................................................................................................................................................9.1
Settings Changes via the Front Panel...............................................................................................................9.3
Settings Changes via the Serial Port ................................................................................................................9.4
Time-Overcurrent Curves ................................................................................................................................9.5
Relay Word Bits (Used in SEL
OGIC Control Equations)..............................................................................9.27
Settings Explanations.....................................................................................................................................9.48
Settings Sheets ...............................................................................................................................................9.57
Section 10: Serial Port Communications and Commands
Introduction....................................................................................................................................................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-351S Relay Command Summary
Section 11: Front-Panel Interface
Introduction....................................................................................................................................................11.1
Front-Panel Pushbutton Operation.................................................................................................................11.2
Functions Unique to the Front-Panel Interface ..............................................................................................11.6
Rotating Default Display .............................................................................................................................11.12
Operator Controls ........................................................................................................................................11.16
Section 12: Standard Event Reports, Sag/Swell/Interruption Report, and SER
Introduction....................................................................................................................................................12.1
Standard 15/30-Cycle Event Reports.............................................................................................................12.2
Sequential Events Recorder (SER) Report ..................................................................................................12.25
Example Standard 15-Cycle Event Report ..................................................................................................12.28
Example SER Report...................................................................................................................................12.34
Sag/Swell/Interruption (SSI) Report (Available in Firmware Version 7) ....................................................12.36
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