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← TechnologyWhich outcome occurs when excessive ground fault current bypasses the current transformer in a high-current circuit?
A)Spurious differential relay tripping✓
B)Phase overcurrent relay misoperation
C)Transformer core saturation develops
D)Capacitor bank resonance occurs
💡 Explanation
Spurious tripping occurs with excessive ground fault, because current imbalance activates the differential relay logic. This is due to **Kirchoff's Current Law** violations. Therefore, relays trip erratically rather than selectively, because fault detection fails due to shunted current paths.
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