All toolsCalculatorsElectricalPower Factor Correction
Power Factor Correction
Size a power-factor-correction capacitor bank (kVAr) from real power and existing/target power factors, with apparent-power and line-current reductions.
The Ensign ToolboxPower Factor CorrectionSize a power-factor-correction capacitor bank (kVAr) from real power and existing/target power factors, with apparent-power and line-current reductions.
Load
kW
Active load P — held constant by the correction
cos φ₁
Uncorrected pf (0–1)
cos φ₂
Desired corrected pf (0–1) — set above the existing pf
Supply (current only)
V
230 typical 1φ, 400 line 3φ — converts kVA to line current only
Enter the real power and both power factors to size the capacitor bank