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← TechnologyDuring high-voltage grid switching, which risk increases when vacuum breakers misfire?
A)System-wide voltage collapse occurs✓
B)Arc flash incidents become likely
C)Transformer core saturation rises
D)Transmission line sag intensifies
💡 Explanation
A misfire prevents the intended sequential interruption of phases; because of this, load imbalances induce greater transient voltages activating cascading protector trips across substations, ultimately causing voltage collapse therefore impacting system stability; rather than localized outcomes focused on flash or sag.
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