NEMA voltage unbalance calculator. Enter the measured Line-Line voltage to calculate the % voltage unbalance based on NEMA Equation. Visit voltage unbalance to find out more about different equations for calculating voltage unbalance.

True voltage unbalance calculator. Enter Line-Line or Line-Neutral voltage to calculate % voltage unbalance based on true voltage unbalance equation. Visit voltage unbalance to find out more about different equations for calculating voltage unbalance.

There could be difference in the % voltage unbalance calculated by both the methods for similar phase voltages. This is normal and expected since NEMA definition does not account for phase angles.