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Answer Posted / subash kumar
Bucholz relay is connected in between the manin tank and
conservator tank and in an angle, when the faults like
loose connection or heat desipation from winding occurs the
gas buble is produced in the oil. As the conservator tank
is installed above the tank level the gas buble trys to
travel to the conservator tank, in between the bucolz relay
is there the gas buble gets trapped in the bucolz relay and
it presses the flot in bucloz relay to down words and it
will activate for once in lot of faults like gas develops
if sudden major fault like short CKT it will activate
imediyetly
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