◆ Product overview

ZW7-40.5 series outdoor high-voltage vacuum circuit breaker is three-phase AC 50Hz outdoor high-voltage electrical equipment; It is applicable to the control and protection of 20~40.5kV power transmission and distribution system; It can also be used for connecting circuit breakers and opening and closing capacitor banks; This product, together with the recloser, can realize the intelligent sectional reclosing control of the power system. The current transformer can be attached for measurement and protection. The circuit breaker can be equipped with spring or electromagnetic operating mechanism with possible mechanical performance and can be operated frequently; No fire and explosion hazards; The circuit breaker shall comply with the requirements of the national standard GBI984-1989 AC High Voltage Circuit Breaker and the International Electrotechnical Commission standards IEC56 and IEC62271-100 High Voltage AC Circuit Breaker. Main features of the circuit breaker: excellent breaking performance, vacuum arc extinguishing, strong breaking capacity, long electrical life, simple mechanical life of 10000 times, maintenance free, long maintenance free cycle; Good insulation performance and anti pollution ability; According to customer requirements, the current transformer can be installed inside, and the measurement accuracy can reach 0.2s, which can realize three-phase interactive protection.

◆ Main functions

A. Vacuum arc extinguishing is adopted, with strong breaking capacity, long electrical life and 10000 mechanical life;

B. Simple structure, maintenance free, long maintenance free cycle;

C. Good insulation performance and strong anti pollution ability;

D. It can be equipped with spring or electromagnetic operating mechanism with reliable mechanical performance and can be operated frequently; No fire and explosion hazards;

E. Built in current transformer, the lecturer's accuracy reaches 0.2, which can realize three-phase interactive protection;

F. Condensation control is enclosed, which can keep the circuit breaker running reliably under certain temperature and humidity.