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What is the criteria in selecting Air circuit breaker(ACB) &
Moulded case circuit breaker(MCCB) for a particular range?
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Answer Posted / shailender gupta
Ans is right but required
calculation.is
p= root(3) VI COS phi.
find out current i.e I after
putting the value of V , p cosphi
and you will get required
current and multiply with 1.75
acc. to IEC fir safty purpose for
equipment
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