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why is it that the HT motors & motors having very low kW
rating(<1kW) have windings connected in STAR, whereas the
motors having in between kW ratings have DELTA connected
windings??

Answer Posted / saurabh

During Design it self it is take in consideration
As Power = Torque x Angular Velocity(RPM)

So for same RPM(say 1500 rpm), for Same Input Voltage

1) In star connection Torque will be less hence Power
output will b less

2) In Delta Connection Toruqe will be More hence Power
output will b more

as far as HT motors are concern, in order to limit inrush
current star connection could b given.

Is This Answer Correct ?    6 Yes 3 No



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