ABB REF615 Relay Fault Report Checking Process

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  • Опубліковано 19 жов 2024
  • 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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