Bushing insulators and accessories for power and distribution transformers

The presence of gas inside an oil insulated transformer is a clear sign of malfunctioning.
The Buchholz relay has the function of collecting and keeping the gas in its interior, and then sending an alarm and/or a trip signal to the transformer.
Nevertheless the Buchholz relay trips the transformer in case of high speed in oil flow, from the transformer to the conservator.
Thanks to the continue research in technical field, Comem have developed the Buchholz relays withstanding class 4M6 vibration that are suitable to the specific application where class 4M6 vibration is the most important requirement.
Please contact our Sales Department in case you need further information and/or catalogues.

CENELEC EN 50216-2 Standard:
25-50-80-100 mm pipeline diameter

COMEM Specification:
25-50-80 mm pipeline diameter