ZW20-12 outdoor AC high voltage demarcation vacuum circuit breaker

Type outdoor AC high voltage demarcation vacuum circuit breaker Type outdoor AC high voltage demarcation vacuum circuit breaker is a user demarcation switch
It is mainly composed of three parts: type vacuum circuit breaker body, fault detection controller and external voltage transformer.
The three are electrically connected through aviation sockets and outdoor sealed control cables, and have fault detection functions, protection control functions and communication functions.
Can reliably judge, detect inside and outside milliamp level zero sequence currents and phase-to-phase short-circuit fault currents, and realize automatic removal of single-phase ground faults and phase-to-phase short-circuit faults
The main switch is a vacuum arc extinguishing method and uses gas Insulation, the box body refers to the gas sealing, explosion-proof, and insulating structure technology of Toshiba Corporation of Japan. The overall sealing performance is excellent, the gas filled inside does not leak, and is not affected by the external environment. Its spring operating mechanism is miniaturized. And performance optimization design, the action reliability is significantly improved compared with the traditional domestic spring mechanism.
The contact between the shaft and the sleeve of the main circuit adopts a retracted and expanded bracelet structure. The contact resistance of the main circuit is small and the temperature rise is low.
The product has reliable performance and is a truly maintenance-free product.
Ideal equipment for the transformation of urban and rural power grids
It can be matched with the controller to realize remote control, telemetry and remote adjustment, and realize four remote functions
Flexible and convenient operation
This product is Diandong energy storage. Electric closing and opening, it also has manual energy storage, manual opening and closing, and can be operated by remote control at short or long distances.
Excellent breaking performance
It can break short-circuit current up to times.
Low operating power, high reliability
Newly designed small electric spring mechanism, the number of parts and operating power are reduced to a minimum.
Maintenance-free
The main circuit of the circuit breaker and the secondary component operating mechanism are sealed in zero gauge pressure of gas and are not affected by the external environment.
Reliable sealing performance
Adopting mature sealing structure technology, the sealing performance is reliable.
Unique way of incoming and outgoing wires
Using silicone rubber sleeves, the insulation distance between terminals is sufficient and the external insulation is excellent.
Safety in use
An explosion-proof device is installed on the top of the box. Even if an unexpected internal failure occurs, no high-temperature gas or splash will leak out.
In addition to the above features, it can also have the following four functions
Automatically remove single-phase ground faults in the user area
Automatically remove double-phase ground faults in the user area
Quickly locate faults Point
Monitor user load
2 Use environmental conditions
Ambient air temperature ℃ ℃ The daily temperature difference is not greater than ℃. According to the properties of gas substances, when the ambient temperature is at ℃,
such as The air pressure inside the box is still gaseous at this time, ensuring the normal operation of the product. When the ambient temperature is ℃ and the gauge pressure is ℃, the liquefaction point is ℃ and the gauge pressure is zero, and the liquefaction point will not exceed ℃.
The wind speed is not greater than/
There is no danger of flammability, strong chemical corrosion, such as various acids and alkalis or heavy smoke, and places with severe vibration.
Altitude
Coverage thickness
Air pollution level
Seismic intensity
Power grid neutral point grounding method Neutral point is not grounded Neutral point is grounded through arc suppression coil The neutral point is grounded with low resistance.