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← TechnologyWhich outcome occurs when a ground fault protection circuit detects leakage current on a three-phase wye distribution system?
A)Neutral conductor voltage rises excessively
B)System frequency shifts towards resonance
C)Affected phase conductor trips offline✓
D)Phase sequence abruptly reverses
💡 Explanation
When ground fault current is sensed, the ground fault protection circuit activates a tripping mechanism because the current differential exceeds a predefined threshold, isolating the faulted phase. Therefore, tripping of affected phase occurs, rather than neutral voltage rise, resonant frequency shift, or phase reversal, which require different fault conditions.
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