ABB REF615 Relay Fault Report Checking Process

Описание к видео 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.

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