Electrical Engineering · Switchgear and Protection
In oil circuit breakers, a longer pre-arcing time generally results in:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Reduced arcing energy and improved interruption
- 2Increased contact wear and oil degradation due to longer arcing duration✓
- 3Higher arc voltage and reduced dielectric recovery
- 4Faster quenching of arc
Correct answer
Increased contact wear and oil degradation due to longer arcing duration
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