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santhosh80
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santhosh80

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10 Sep 2009
Dear All,

I am using slipring motor of 425KW, 6.6 KV. motor for fan application. Motor speed is controlled using grid resistance and it is running at 80% speed. As I know for fan applications power = (speed) 3.

Does this formula applies to slip ring motor also? or

it applies to VFD + Induction motor. As i know if slip ring motor running at 80% speed, remaining slip power dissipates at resistors and there will no energy saving.

Finally my intension is to use VFD+S.C. motor instead of slipring motor.
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26 Sep 2009 - 12:10

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