Why is starter necessary for a three-phase induction motor?
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Answer Posted / arun mutharasu
consider a equation ( kvl form in starting period )
V=Eb+IR
at starting time,
the back emf is zero,
so I=V/R,
In case the R is small mean,
eg) v=220 Volt, R=.5 Ohm sub this and get I=440 Amps,
that reason we increase the starting resistance of the
motor using starter.
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