Role of Vacuum Circuit Breaker in Power System

Let's look at the working principle of vacuum circuit breaker and the role of vacuum circuit breaker in the electric power system. Vacuum circuit breaker's arc extinguishing medium and the insulation medium of the contacting after the arc extinguishing are high vacuum. Vacuum circuit breaker is the main switching equipment in the electric power system. Vacuum circuit breaker is named for its arc extinguishing medium and insulating medium of the contacting after the arc extinguishing. It has the advantages of small size and light weight. It is also suitable for frequent operation and arc extinguishing without maintenance. Therefore. vacuum circuit breaker is widely used in electric power system.

1. The technical standard for outdoor vacuum circuit breakers

Vacuum circuit breakers have been seeing vigorous development from the past ten years. This is the main switch equipment in electric power system. 

The product has developed from several varieties of ZN1~ZN5 to dozens of models and varieties. With rated current 5000A, its breaking current reaching a better level of 50kA. And its voltage reach to 35kV.

2. The function of outdoor vacuum circuit breakers in electric power system

When the electric system is working properly, outdoor vacuum circuit breaker can stop and get though circuit. And no-load and load current.

When a fault occurs in the power system, the vacuum circuit breaker and relay protection cooperate to quickly remove the fault current and prevent the expansion of the accident.


During Gopower's development, we have formed a senior management team composed of professional technology and professional management talents. We have a reasonable structure and high complementarity. We are determined to forge ahead and respond quickly. In addition, our company make decisions determinately. We keep close contact with electric Power Research Institute (EPPI), Standard Committee, Research and Testing authority, etc. Therefore, we not only understand the development prospect of the industry, but also quickly follow and lead development trend of the outdoor vacuum circuit breaker industry. Our company has passed three standard system certifications: ISO9001, ISO14001, OHSAS18001. With a complete, effective management and control system, we ensure the stable and reliable operation of the company!  In the past years of development, we have laid a solid foundation in technology research, production management, product testing, after-sales service, system control, etc. We have been working hard to make progress! We believe that greater contribution to the national smart grid construction will be made. Welcometo buy our products online!

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