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Starting Dual Speed Motor


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I have a dual speed motor of 40 HP , 2900 rpm and 1450 rpm.

We had planned star- delta starter but as per motor manufacturer, the motor can be started through dol starting only.Also the motor will instantly catch the full speed.

Hence I would like to know is there any other mechanism to reduce the starting torque and full speed/time can be delayed.

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I would recommend that you use a soft starter with two parameter sets, one set for hih speed and one for low speed.

This will reduce the start and thereby increase the start time.


Best regards,


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