Input Parameters
About This Calculator
- Qc = P × (tan(acos(PF₁)) - tan(acos(PF₂)))
- C = Qc / (2π × f × V²)
- Target PF ≥ 0.95 recommended
How this power factor correction calculator works
Required reactive compensation: Qc = P × (tan(acos(PF₁)) - tan(acos(PF₂))).
The capacitor size in μF: C = Qc / (2π × f × V²). Improving PF reduces current draw and utility penalties.
FAQ
What is PFC?
Adding capacitors to reduce reactive power, PF closer to 1.
kVAR formula?
Qc = P × (tan(acos(PF₁)) - tan(acos(PF₂))).
Good power factor?
≥0.95 ideal. Below 0.90 often penalized.