Explain Buchholz relay with neat labelled diagram.
in Switchgear And Protection by

1 Answer

0 like 0 dislike

Buchholz relay: The relay is located in the path of the oil from transformer tank to conservator. As seen from diagram, the upper mercury switch operates the alarm circuit due to tilting of the float by accumulation of gas evolved slowly in the transformer tank due to minor faults which may develop into major ones if the alarm is not investigated. Further lower mercury switch operates the trip circuit to switch off the circuit breaker related to the transformer when there is a sudden flow of oil from the transformer tank to conservator. Such flow occurs when there is serious fault in the transformer tank. Here the float (lower) is placed in such a manner that it senses the sudden violent movement of oil from transformer tank to conservator.

image

by

Related questions

1 answer
0 answers

Ask Price : 09175036778

Buy Obstacle Avoidance Robot (Final year project) . Call or whatsapp now (India only) 09175036778

Intrested ?: Intrested

9,100 questions

7,861 answers

142 comments

3,164 users