Hv Outdoor Circuit Breaker

HV outdoor circuit breaker is an outdoor three-phase porcelain column electrical equipment. In order to meet the demand of the power market in China, on the basis of fully summarizing the manufacturing and use experience of similar products at home and abroad, it combines advanced design concepts from various parties and self-developed new products. The product is matched with a new type of spring mechanism, with split phase operation and three-phase mechanical linkage structure.


This product uses SF6 gas as the arc extinguishing and insulating medium. The arc extinguishing chamber adopts the world's advanced self energy pressurized double acting arc extinguishing chamber structure, and is equipped with a new spring control mechanism to reduce the operating power. It has the characteristics of long electrical life, low operating power, low noise, and high reliability. All technical indicators have reached the advanced level of similar products at home and abroad.

Rated voltage: 252kV
Rated current: 4000A, 5000A
Rated short-circuit current: 50kA, 63kA
Rated short-circuit breaking times: more than 22 times
Mechanical life: 10000 times
Low temperature and high temperature test: - 50 ºC~+55 ºC
Annual air leakage rate of SF6: less than 0.5%