how to calculate the powerfactor in induction motor having
name plate details? for example 1 h.p motor 1.86 A 415 V

Answer Posted / md. zakir hosen

We know P=VICOSф.
Here, P=1H.P=746W,V=415v,I=1.85amp
Now putting this value on the equation simply we get the PF.
746=415*1.85*COSф
746
=>COSф=----------=0.9716 and it must be lagging.
415*1.85


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