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ZW7A-40.5 Outdoor high voltage vacuum circuit breaker
    发布时间: 2021-07-08 14:59    

ZW7A series of 40.5KV outdoor vacuum circuit breakers are outdoor products developed by our company with the international level in the early 1990s.It can be used not only for the control and protection of power plants, substations, power equipment and power lines, but also for the frequent operation of the site, it is not only used for the construction of new substation, but also for the oil-free transformation of the old substation.

ZW7A series 40.5KV outdoor vacuum circuit breakers are used in AC 50HZ three-phase power systems for load and load current, overload current and short circuit current.


ZW7A-40.5 Outdoor high voltage vacuum circuit breaker

The product is mainly composed of vacuum arc extinguishing chamber, current transformer, driving mechanism and operating mechanism. This product can be equipped with electromagnetic and spring two kinds of mechanism. In order to avoid the series caused by filling SF6 gas and oil

The product is equipped with a current transformer. Each phase can have four windings, two of which are used for measurement and two for useto protect. According to customer's requirements, current transformers of 100:5,200:5,400:5,800:5,1000:5,1600:5 can be installed.

The operating mechanism and connecting rod are installed in the mechanism box, which is waterproof. In order to prevent the electrical control elements in the box from being affected by moisture, an electric heater is installed in the mechanism box.

Transmission mechanism, including insulating tie rod, crank arm and guide rod, can adjust the length of insulating tie rod and guide rod, and can adjust the opening distance and overrange of switch.