Which outcome occurs when a three-phase transformer's protective relay misinterprets inrush current as a fault?

💡 Explanation

When inrush current triggers a false fault detection, protective relays activate inappropriately because they fail to distinguish inrush from actual fault current characteristics, leading to unnecessary opening of the circuit breaker. Therefore, nuisance tripping results, rather than reduced saturation, regulator overcompensation, or harmonics needing sustained fault conditions.

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