Dear All,
Can anybody please tell me which value(saturated or unsaturated) of sub-transient reactance(Xd") we take for the calculation of fault current of the system?
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Answer Posted / yegneswaran
Saturated machines will have lesser reactance compares to unsaturated ones...
Hence, fault current is more while saturated subtransient reactance taken into account...
We should consider saturated subtransient reactance while calculating fault current value.
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