Question

Bucholz relay is generally used for the protection of
(a) Transmission Line
(b) Alternator
(c) Transformer
(d) Motors​

Answer 1

Answer:

option (C)

Transformer

Explanation:

Buchholz relay is a type of oil and gas actuated protection relay universally used on all oil immersed transformers having rating more than 500 kVA. Buchholz relay is not provided in relays having rating below 500 kVA from the point of view of economic considerations.

Buchholz relay is used for the protection of transformers from the faults occurring inside the transformer. Short circuit faults such as inter turn faults, incipient winding faults, and core faults may occur due to the impulse breakdown of the insulating oil or simply the transformer oil. Buchholz relay will sense such faults and closes the alarm circuit.

Answer 2

Explanation:

Answer c

Transformer is the only