This calculator determines the capacitor bank size and auto power factor controller (APFC) steps required to improve power factor, compliant with IEEE 519 and IEC 60831 standards. It supports industrial voltages (230V, 400V, 480V, 690V) and frequencies (50 Hz, 60 Hz).
Formulas used: Q = P * tan(acos(PF)) for reactive power, Q_required = P * (tan(acos(PF_current)) - tan(acos(PF_target))) for required kVAR, and C = Q_required * 1000 / (2 * π * f * V²) for capacitance. The chart visualizes PF improvement, and results can be exported as a PDF for documentation.