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If a stator has 48 slots, 6 poles and 3 phase with narrow spread winding, then the third harmonic belt factor is ____________

If a stator has 48 slots, 6 poles and 3 phase with narrow spread winding, then the third harmonic belt factor is ____________ Correct Answer 0.6407

q= (s/m)/p=k.Sk/k.Pk=Sk/Pk for fractional slot winding where k is the highest common factor between s/m and P, here q= 48/3*6 =16/6= 8/3 = Sk/Pk The distribution factor for fractional slot winding’s is obtained by replacing q by Sk and kdn = (sinnγ/2)/(Sksinnγ/2Sk), if n=3, kd3=0.6407.

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