The latest technical progress of vacuum circuit breaker in Japan

Japan began to develop from 1960 VCB (vacuum breaker), beginning in 1970 1976 officially put on the market, VCB has accounted for the Japanese medium voltage circuit breakers market 50%, 20 years after 1990 has accounted for more than 70%, and in 2007 accounted for the total number of 80%, with absolute advantage over other circuit breaker. Now Japan produces about 250 thousand VCB each year.The progress of vacuum circuit breaker in Japan is reflected in the aspects of material, technology, de...

Technical progress of high voltage vacuum circuit breaker

In the field of medium voltage vacuum circuit breakers (12-40.5 kV) has been dominant, and in the field of high voltage (72.5-252 kV) has also been budding, optimistic about the prospects for its development. In China, the medium voltage vacuum circuit breaker in 2009 accounted for 99.39% of the medium voltage switch. High voltage vacuum circuit breaker in 72.5~126 kV developed a new level, and has been put into operation. In foreign countries, many countries and companies in the development o...

A new generation of isolated circuit breaker used in Smart Grid

it is reported that all fiber current transformer has fault self diagnosis, online real-time alarm lamp function, with a safe, reliable, accurate, intelligent, easy to integrate and many other advantages.isolation circuit breaker can realize the isolation switch, transformer, circuit breaker of the integration of manufacturing, through the one or two high degree of integration, to achieve functional combination, saving land and investment. In the traditional open type substation, circuit break...