Calculate. Understand the assumptions.
Convert kvar, current and capacitance using your system values.
Nominal capacitor bank line current.
Assumes sinusoidal voltage, ideal capacitors and balanced three-phase operation. Calculated current does not size cables, fuses or contactors; harmonics, tolerances and inrush require separate assessment. Capacitor voltage in reactor-equipped banks requires a separate calculation.
Understand the equations
For three-phase systems, voltage is the line-to-line RMS value. The µF result applies to each branch of the star or delta connection. Do not confuse total kvar with the capacitance of one branch.
Technical source: Eaton — Power Factor Correction Guide ↗
NEPSI — Power Factor and General Power System Calculators ↗
These independent tools implement standard circuit equations. They do not imply NEPSI endorsement.