A Buchholz relay can be installed on______________?
Correct answer: E. oil cooled transformers
- A. A Buchholz relay can be installed on
- B. auto-transformers
- C. air-cooled transformers
- D. welding transformers
- E. oil cooled transformers
Explanation
A Buchholz relay is fitted in the oil pipe between the main tank and conservator of an oil-immersed transformer, where it detects gas accumulation and oil surges. It is not normally used on air-cooled, welding, or ordinary auto-transformers without this arrangement.
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