RadLight
Electrical
- Jan 20, 2003
- 17
I tried using this method as follows:
1. Calculate the VARs by taking the square root of the difference of the squares of the VA and Watt value.
2. Divide the square of the Volts by the VARs value to obtain the impedance.
3.The capacitor value for pf = 1.00 is supposed to be the reciprocal of the product of 2 , Pi and thsi impedance.
I used a lower capacitor than the calculate value, on a ballast but sometimes even measured negative power factor values with my meter. I was using a Goosen MetraHit 28S meter. Has anyone a more reliable method for a capacitor?
1. Calculate the VARs by taking the square root of the difference of the squares of the VA and Watt value.
2. Divide the square of the Volts by the VARs value to obtain the impedance.
3.The capacitor value for pf = 1.00 is supposed to be the reciprocal of the product of 2 , Pi and thsi impedance.
I used a lower capacitor than the calculate value, on a ballast but sometimes even measured negative power factor values with my meter. I was using a Goosen MetraHit 28S meter. Has anyone a more reliable method for a capacitor?