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How the soft starter control the starting current in three
phase squirrel cage AC Motor?



How the soft starter control the starting current in three phase squirrel cage AC Motor?..

Answer / hamed

Soft starter means useing auto-transformer to increase the
voltage gradually till it reach full speed.

Is=Voltage/sqr.root(X^2 + R^2 ),
So it is clear from the formula that the Is is small when
the Voltage is small.

Is This Answer Correct ?    3 Yes 5 No

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