Does a voltage imbalance between the phases at the motor affect kWh, KW Demand and KVA Charges from the Utility?
Yes – mainly in three phase motors. A phase imbalance increases the losses at the motor and causes motors to consume out of balance current leading to increased internal losses and temperature. Therefore, if the voltage imbalance is at the motor, the motor may have problems and cause the motor to consume more kWh.
