What checks can be done if current imbalances are detected on the three phases of the motor?
Absorption differences on the three motor phases (greater if detected without load) are not always due to a construction defect since even the supply can be unbalanced. If a high imbalance is detected (under optimal voltage conditions) also check absorption on the other two motor/mains connection combinations; (to maintain the same rotation direction, proceed according to the diagram): Optimal connection is when the difference between absorptions is the least. However, if the highest absorption is always detected on the same phase of the line the main cause of imbalance is due to the supply. N.B.: Max. permissible imbalance on absorbed current: 5% .
Related Questions
- Can my department use UTDRIVERS to perform Motor Vehicle Record (MVR) checks on students or other individuals not considered to be employees of the University?
- Does a voltage imbalance between the phases at the motor affect kWh, KW Demand and KVA Charges from the Utility?
- What if I need to determine a drivers rating between the monthly Motor Vehicle Record (MVR) checks?
