Which outcome occurs when a three-phase transformer bank experiences a single-phase voltage loss on its primary winding?

💡 Explanation

When a single-phase is lost, the remaining transformers must carry the entire load, leading to increased current flow because the magnetic flux distribution in the core becomes unbalanced, causing localized saturation and increased eddy current losses. Therefore windings overheat results, rather than balanced voltages, reactive power increase, or harmonic distortion, which would require different fault conditions.

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