FIELD ELECTRICAL TEST AND CHECK LIST OF PROTECTION RELAY AND OVERCURRENT RELAY

PROTECTION RELAY FIELD INSTALLATION CHECK LIST
VISUAL AND MECHANICAL INSPECTION OF EQUIPMENT
Yes
No
1.      Relays shall be inspected for physical damage and compliance with specifications.
2.      Insure up to date metering and relaying one-line
diagrams are available.
3.      Insure up to date relay and control AC and DC
schematics, both vendor and Saudi Aramco, are available.
4.      Insure up to date relay and control panel layout diagrams with relay locations are available
5.    Insure vendor operating /maintenance instruction manuals and PC software are available
6.      Check relay nameplate against drawings and specifications.
7.   Verify relay wiring is installed, connected, as per the drawings.

ELECTRICAL TESTS

Yes
No
1.      Verify that only one grounding point per CT circuit is available.  Disconnect the grounding point and conduct resistance measurement between the CT circuit and ground.  This shall read open circuit.
2.      Follow all commissioning procedures as per the relay instruction manual.
3.      Apply or download the relay settings in accordance with the settings sheets or the software setting file provided by the relay engineer.
4.      Perform pickup test on the functions activated by the relay settings and make sure that the relay trips the correct output contacts and activate the corresponding indicating LED as per the relay settings.
5.      Perform timing tests on the functions activated by the relay settings and make sure that the relay trips the correct output contacts and activate the corresponding indicating LED as per the relay settings.
6.      Perform stability test for all differential and directional protection schemes via primary injection for in zone and out zone faults to verify correct CT and VT connections.
7.   Activate the digital inputs and verify their correct functions
8.      Exercise the flex logic equations if applied by activating the required inputs and verify the outputs.
9.    If utilized verify analogue output from relay to DCS and calibrate if necessary.
10.   If utilized verify communication connectivity to DCS computer system.
Manufacturers completed relay field test form to be attached to this test report.

 

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