Which device is provided as backup of Buchholz relay???

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Which device is provided as backup of Buchholz relay???..

Answer / sameer

transformer is device protected by buchholzz relay from fault (short ckt) in the winding of transformer. capacity above 500 Kva this relay is used.

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Which device is provided as backup of Buchholz relay???..

Answer / e.subhash

pressure relief valve

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