8-10 MIB High Impedance Bus Differntial Relay GEK-106426B
8.10 CONTACT OUTPUTS 8 RELAY COMMISSIONING
8
8.10CONTACT OUTPUTS
Check that all the outputs are open.
Set the relay as follows:
Inject a current through phase A terminals equal to 0.1 amp to trip the relay. Check that the trip output (terminals A5-A6)
and auxiliary output OUT2 (terminals A7-B8) and OUT4 (terminals A7-B10) close, and the PICKUP (LED4), and OP 87A
(LED1) LEDs lights up.
Inject a current through phase B terminals equal to 0.1 amp to trip the relay. Check that the trip output (terminals A5-A6)
and auxiliary output OUT2 (terminals A7-B8) and OUT4 (terminals A7-B10) close, and the PICK UP (LED4), OP 87B
(LED2) and TRIP LEDs light up.
Inject a current through phase C terminals equal to 0.1 amp1 x In (phase) to trip the relay. Check that the trip output
(terminals A5-A6) and auxiliary output OUT2 (terminals A7-B8) and OUT4 (terminals A7-B10) close, and the PICK UP
(LED4), OP 87C (LED3) and TRIP LEDs light up.
Remove the Power Supply from the relay and check that the READY contact (terminals B5-B6) closes. Power
on the relay again and check that the READY (terminals B5-B6) contact opens.
87 2
NAME VALUE UNITS RANGE
87 2 Enable Yes Yes/No
87 2 Trip Enable Yes Yes/No
87 2 Pickup level 0.01 Amps 0.01 – 0.04
87 2 Time Delay 0 Seconds 0 - 600
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