how we calculate the 30 KW 3phase electric motor current on
noload
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Answer Posted / vaibhav
There are many factors that decide no load amperes. Material characteristic of winding material, slip of motor, voltage applied, air gap between stator and rotor, motor bearing condition etc. Mostly rewinded motors show high no load ampere sometimes up to 70-80% of full load ampere. There is no thumb rule to calculate it and in case of new motor no load ampere value is generally mentioned on motor name plate.
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