Answer / rupinder singh

2nd and 5th harmonics means- voltages or current having frequency two times and five times the fundamental power frequency..eg. if fundamental power freq. is 50Hz then 2nd Harmonics is a current or voltage having frequency 100Hz and that fifth Harmonic having frequency 250Hz.

for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

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