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What are the consequences of 3-phase voltage imbalance on motors?

April 26, 2017consequences imbalance motors voltage

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What are the consequences of 3-phase voltage imbalance on motors?

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The effect of 3-phase voltage imbalance is somewhat analogous to a spinning wheel. If the wheel is not completely balanced, the force required to maintain the spinning motion is higher than for a balanced wheel. Hence, in practical terms, 3-phase voltage imbalance can result in significant energy waste and heating of motors and wiring. Maintenance requirements also increase as motors run less efficiently.