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 breakers and disconnecting switches are independent equipment, which need to be installed. The isolating circuit breaker integrates the isolation function and the circuit breaker, so that no two sets of equipment can be installed independently. This can reduce the considerable area, reduce power consumption, improve the security of the grid and improve the reliability of the system.

with breaking technology, air circuit breaker type from the previous arc circuit breaker, less oil circuit breaker, SF6 dual pressure circuit breaker to today's SF6 single type circuit breaker, the reliability improvement. The isolating circuit breaker realizes the integrated manufacture of the isolating switch, the mutual inductor and the circuit breaker, and realizes the combination of functions through the integration of the one or two devices to save land and investment.

in recent years, the national Power Grid Corp focused on the development of international power transmission technology trends, based on the research and construction of intelligent substation, put forward the strategic plan of building a new generation of intelligent substation. The program to "high degree of integration, rational structure and layout, advanced equipment applicable, economic and environmental protection, support and control integration" as the goal, focusing on the capture of a number of key technologies, such as isolation circuit breaker. By the time of the company's specific R & D all fiber optic current transformer, the isolation circuit breaker integrated installation, applied to a new generation of intelligent substation expansion demonstration project, the use of good feedback.