AC power quality
Capacitor Bank Capacitance Calculator
Estimate capacitor-bank kVAR and capacitance needed to improve an AC system power factor.
Power-factor correction
Enter system values
kW
Hz
V
Required capacitor bank
42.1 kVAR
Capacitance basis161.7 µF
Estimate onlyVerify harmonic resonance, switching steps, voltage rating, discharge, inrush, and utility requirements before selecting capacitors.
About this calculator
Estimate capacitor-bank kVAR and capacitance needed to improve an AC system power factor.
Method and assumptions
Required kVAR = kW × [tan(acos(initial PF)) − tan(acos(target PF))]. Capacitance uses the entered voltage, frequency, and phase arrangement.