HOW TO CALCULATE GROUND FAULT CURRENT IN 430V 4000AMP AIR CIRCUIT BREAKER?

HOW TO CALCULATE GROUND FAULT CURRENT IN 430V 4000AMP AIR
CIRCUIT BREAKER?

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HOW TO CALCULATE GROUND FAULT CURRENT IN 430V 4000AMP AIR CIRCUIT BREAKER?..

Answer / k.prakashchandra

The line to ground voltage is about 250 V , The maximum
ground fault current is, when the phase wire touches the
earthed metal surface and it will be about 250 A ,taking ER
as 0.5 X 2 ohm ,ignoring impedance of the tr.

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HOW TO CALCULATE GROUND FAULT CURRENT IN 430V 4000AMP AIR CIRCUIT BREAKER?..

Answer / wareagle

Not enough information to answer the question.
Need source impedance and KVa rating.

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2 No

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