Answer / wasif

in case of fault enormous amout of heat is generated in the
main tank which decompose the oil as a result of which
gases are produced. When the gases travel from main tank to
conservator tank they causes the float of buchholz relay to
be inverted which in result makes the tripping contacts and
thus causes the breaker to be tripped.

Answer / nagaraja bagi

Buchholz relay is used for Transformer Internal faults,bcoz
of over load or internal faults more heat will produce it
decomposes the oil and produces the gas and because of
transformer insulation gas will produce and it will try
move from main tank to conservator bcoz it is light in
weight then alarm float will operate and gives the alarm if
it exceeds then tripping float will operate and trip the
Breaker of Transformer.

Answer / anant shetye

In power Transformer Gases form so before putting
Transformer in service we have to release that gases & LET
OIL SHOULD come to conservater tank for safe operation ,if
it is not do so and if you give supply to the transformer
Buckoltz relay gets trip & it provide safety to Transformer.

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