Overview
QJ series buchholz relay is a safety protection device for oil-immersed transformers. The buchholz relay is installed on the connecting pipe between the transformer oil tank cover and the oil storage cabinet. It can be equipped with a gas guide pipe and a gas box to realize ground exhaust sampling. When a fault occurs inside the transformer and causes the insulating liquid to decompose and produce gas or causes oil flow to surge, the contacts of the buchholz relay will operate and connect the designated circuit, thereby sending out electrical signals in time or automatically cutting off the power equipment, thereby protecting the safe operation of the transformer.
Conditions of use
1. Working temperature: -40℃~-120℃; environment temperature: -40→~70→.
2. Humidity requirement: At +20℃, the relative humidity is not more than 95%.
3. Installation method: The axis of the relay pipeline should be parallel to the transformer oil tank cover, and the end leading to the oil storage cabinet is allowed to be slightly higher, but the inclination angle of its axis to the horizontal plane does not exceed 4%.
4. Protection level: IP55 (can be upgraded to IP65 according to customer requirements).
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