ABB REF615 Relay Fault Report Checking Process

ABB REF615 Backup Relay: Fault Current = Multiplication Factor (obtained from relay) X CT ratio. For eg: If Multiplication factor is 1.2 and CT ratio is 400/1, then - Fault current is 1.2X400 = 480Amps. NOTE: In these kind of relays the indication LEDs and Programmable LEDs need to be reset first, after a fault, before attempting to close the breaker.