Answer / sarmadahmed

Because at no load, the only significant current component is Excitation current which is 90 degree out of phase with the supply voltage. Since pf = cos(@) and @ is around 90 here, power factor is very low.

I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i touch R phase, and then i touch Y phase using multimeter, the moment i touched, it blasts and that moment i got blindness. multimeter selector position is correct(750V AC MODE AND RED PROBE WASS IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?

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