why making capacity is more than breaking capacity?

Answer Posted / pratik

Since breaker operates in transiant state & it is design to
pass the sub transient current through it.But it is
supposed that if breaker is just about to close & fault
occurs at the same time then breaker will have to close in
that sub transient period & thus amount of arc produce will
be very high.Thus making cap. is very high.

Is This Answer Correct ?    65 Yes 10 No



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