GEK-106426B MIB High Impedance Bus Differntial Relay 8-11
8 RELAY COMMISSIONING 8.11 RELAY METERING
8
8.11RELAY METERING 8.11.1 CURRENT METERING
Set the relay to the same frequency than the AC source used and apply the following currents:
Check that the relay measures Ia, Ib and Ic with an accuracy better than 5%.
PHASE 1 2 3
Ia (Amps) 0.2 amps (phase)
Ib (Amps) 0.1 amps (phase) 0.3 amps
Ic (Amps)