what is the formula to find power factor in an AC circuitry? thanks for the help

 

Here is a link to the section on power factor located in the AAC ebook. You will find the equation there.

hgmjr

 

power factor=(real power)/(apparent power)

 

Instantaneous or Average Power Factor? Instantaneous = W (E*I)*(COS of Phase Angle Difference between the Voltage and Amperage) / VA....or Average over time: kWh / kVAh. If kVAh are not available; √ kWh2 + kVARh2 .

 

My mistake! The previous equation will give you kVAh, then use kVAh/kWh for average PF. Sorry!