How the starter control the starting current in three
phase AC Motor?(In DC apply the reistance).

Answer Posted / venu

Mainly starters are used to reduse the starting
current.normally we will use the star delta starter for the
above 7.5HP.

as per the electrical formula.

motor will start in star first
since IL = IPh
coz we have to equilize the starting current

then its go to delta

Since VL= Vph

Finally

In star -Current equal
In Delta- Voltage equal
that how the starter will control the startingcurrent

Is This Answer Correct ?    4 Yes 2 No



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