10.15
Date Code 20020903 SEL-587Z Instruction Manual
Testing and Troubleshooting
Commissioning Testing
Commissioning Testing
SEL performs a complete functional check and calibration of each SEL-587Z
before shipment so that your relay operates correctly and accurately. You
should perform commissioning tests to verify proper connection of the relay
to the power system and all auxiliary equipment:
Check control signal inputs and outputs.
Check breaker auxiliary inputs, SCADA control inputs, and
monitoring outputs.
Verify that the relay current and voltage inputs are the proper
magnitude and phase rotation.
Brief fault tests confirm that the relay settings and protection scheme logic are
correct. You do not need to test every relay element, timer, and function in
these tests.
At commissioning time, use the relay METER command to record load
currents.
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