Physics · Power Systems
Which of the following relays provides reliable protection against internal incipient faults (such as insulation damage, core heating, or minor arc faults) in oil-immersed transformers?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Differential relay
- 2Overcurrent relay
- 3Buchholz relay✓
- 4Distance relay
Correct answer
Buchholz relay
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