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
