Which operational risk increases substantially when an inductive AC motor operating from a three-phase power system experiences significant incoming voltage imbalances?

💡 Explanation

Unequal supply voltages induce negative sequence currents, and this `negative sequence impedance` causes significantly higher current flow in certain motor windings disproportionately, because the impedance is relatively lower. Therefore, winding overheating is the major issue, rather than torque pulsations or core issues.

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