NR Electric PCS-9611, Instruction Manual

Page: 277 / 300

12 Commissioning
PCS-9611 Feeder Relay
12-5
Date: 2014-04-08
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Voltage transformer circuits

Current transformer circuits
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DC power supply

Optic-isolated binary inputs
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Binary output contacts

Electrical communication ports
The insulation resistance should be greater than 100MΩ at 500V.
Test method:
To unplug all the terminals sockets of this relay, and do the insulation resistance test for each
circuit above with an electronic or brushless insulation tester.
On completion of the insulation resistance tests, ensure all external wiring is correctly reconnected
to the protection.
12.5.1.3 External Wiring
Check that the external wiring is correct to the relevant relay diagram and scheme diagram.
Ensure as far as practical that phasing/phase rotation appears to be as expected.
Check the wiring against the schematic diagram for the installation to ensure compliance with the
customer’s normal practice.
12.5.1.4 Auxiliary Power Supply
The relay only can be operated under the auxiliary power supply depe
nding on the relay’s nominal
power supply rating.
The incoming voltage must be within the operating range specified in Section 2.1.1.1 , before
energizing the relay, measure the auxiliary supply to ensure it within the operating range.
Other requirements to the auxiliary power supply are specified in Section 2.1.1.1 . See this section
for further details about the parameters of the power supply.
WARNING! Energize this relay only when the power supply is within the specified
operating ranges in Section 2.1.1.1 .
12.5.2 With the Relay Energized
The following groups of checks verify that the relay hardware and software is functioning correctly
and should be carried out with the auxiliary supply applied to the relay.
The current and voltage transformer connections must remain isolated from the relay for these
checks. The trip circuit should also remain isolated to prevent accidental operation of the
associated circuit breaker.