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← TechnologyWhich outcome occurs when a high-impedance ground fault develops within a three-phase electrical distribution circuit?
A)Overvoltage at the unaffected phases✓
B)Complete loss of power to the load
C)Increased efficiency due to reduced losses
D)Immediate activation of all circuit breakers
💡 Explanation
When a high-impedance ground fault occurs, the neutral voltage shifts because of unbalanced phase impedances, causing overvoltage on the remaining healthy phases. Therefore overvoltage occurs, rather than power loss, increased efficiency or breaker activation, all of which require differentfault conditions or protection schemes.
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