Physics · Electrical Appliances
For detecting incipient faults in oil-immersed transformers, which of the following protection devices is most commonly used?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Differential protection
- 2Restricted earth fault protection
- 3Overload protection
- 4Buchholz relay✓
Correct answer
Buchholz relay
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