In the field of electric power distribution and transmission, a Buchholz relay is a safety device mounted on some oil - filled power transformers and reactors, equipped with an external overhead oil reservoir called a "conservator ''. The Buchholz relay is used as a protective device sensitive to the effects of dielectric failure inside the equipment. A generic designation for this type of device is "gas detector relay ''.
what is buchholz relay what is it used for
a safety device mounted on some oil - filled power transformers and reactors as a protective device sensitive to the effects of dielectric failure inside the equipment