Question { 3798 }

In case of motor Power Factor Generally We Apply A Capacitor
But How Can We Know That A Motor is Running On Very low Power
Factor And What Rating Of Capacitor We Have To Place And Tell
Me Conversion Of Micro Farad to KVAR>

Answer

generally now a days power factor is maintained by APFC ( auto power factor control) panel. Here there is a provision for setting the PF say 0.99. Capacitors from the capacitor banks are automatically switched off & on as per the load to maintain the set power factor. As motors are always run through motor control panel. As for the individual motor, we have to maintain the load for a suitable PF. Also C = kVAR / (2 π f V2) in microfarad