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Motor's Use As Star Instead Of Delta


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No, except that when the motor trips out on overload, you will save a lot of energy because it will not be running!


When you connect it is star, you are effectively reducing the voltage to each winding by the square root of 3, so you are then reducing the torque that the motor can produce by that voltage reduction squared, ending up with 1/3 of the available torque. If your motor was properly sized to do the job it was intended for, it will stall with only 1/3 of its available torque.

"He's not dead, he's just pinin' for the fjords!"
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If you are operating the motor at less than 3KW, then you can connect in star and you will save some of the iron loss, but if you load is less than 3KW, why are you using a 10 KW motor?


Best regards,

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