ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker

Overview

ZN85-40.5 indoor high-voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is suitable for power system with three-phase AC 50Hz and rated voltage 40.5KV, and can be used for load current, overload current and fault current of industrial and mining enterprises, power plants and substations.
The circuit breaker and the operating mechanism are arranged up and down, effectively reducing the depth of the circuit breaker.
The three-phase arc extinguishing chamber and the connected charged body are separated by three independent epoxy resin insulating pipes to form a composite insulating structure. The circuit breaker can meet the air distance and climbing distance requirements under normal operating conditions, and effectively reduce the volume of the circuit breaker. The vacuum interrupter of the main circuit and the electrostatic joint are installed in the insulating cylinder with a distance of only 300mm. The electrical connection of the main circuit adopts fixed connection with high reliability. The insulating cylinder is installed above the circuit breaker frame.
A spring-operated mechanism specially designed for this new type of circuit breaker is installed in the frame of the circuit breaker. Its structural characteristics are more suitable for the upper and lower layout of the circuit breaker and become an integral part of the overall structure of the circuit breaker. The mechanism design is simple, and the output curve and its performance are more suitable for the characteristics and requirements of the 40.5kV vacuum circuit breaker.
The overall layout is reasonable, beautiful and concise. It has the characteristics of small size, flexible operation, reliable electrical performance, long service life, convenient maintenance and maintenance-free mechanism.
The circuit breaker is suitable for occasions and places with frequent operation and a variety of harsh operating conditions.

Product Structure Features

1. The circuit breaker adopts the upper arc extinguishing chamber and the overall structure under the mechanism, which is conducive to debugging;
2. Adopt air and organic material composite insulation structure, compact design and light weight;
3. It can be equipped with American vacuum interrupter and domestic ZMD vacuum interrupter. The two arc extinguishing chambers use longitudinal magnetic field to extinguish the arc, with low cut-off rate and good asymmetric breaking performance.
4. Simple spring operating mechanism, 10,000 times maintenance-free.
5. The screw drive mechanism is labor-saving, stable and has good self-locking performance.

Environmental Conditions

1. Ambient air temperature: -5~+40, 24h average temperature does not exceed +35.
2. Install and use indoors. The altitude of the work site shall not exceed 2000M.
3. At maximum temperature +40, the relative humidity should not exceed 50%. Higher relative humidity is allowed at lower temperatures. predecessor. 90% at +20. However, due to changes in temperature, it is possible to inadvertently produce moderate dew.
4. The installation slope should not exceed 5.
5. Install it in places without severe vibration and impact, and in places with insufficient corrosion to electrical components.
6. For any specific requirements, please negotiate with the manufacturer.