Can vacuum circuit breakers prevent fires?
Vacuum circuit breakers (VACUUM CIRCUIT BREAKER) can effectively prevent fires through their unique arc extinguishing mechanism and structural design, as shown below:
1. Fire and explosion prevention advantages
No flammable and explosive media: The vacuum environment eliminates the flammable insulating oil in oil circuit breakers and the compressed air in air circuit breakers, completely eliminating the risk of fire caused by medium combustion.
Operation overvoltage control: By optimizing the design and installation measures (such as installing lightning arresters, using arc extinguishing hoods, etc.), the cut-off overvoltage and high-frequency reignition overvoltage generated when breaking small currents can be effectively suppressed to avoid fires caused by arc reignition.
2. Safety in practical applications
High reliability: The contacts of vacuum circuit breakers have minimal wear when breaking in a vacuum, have a long life, and reduce the risk of heat accumulation caused by contact failure.
Low maintenance cost: There is no need to regularly replace arc extinguishing media or perform complex insulation testing, which further reduces the possibility of fires caused by equipment failures.
3. Special scenario supplement
In fire protection systems, vacuum circuit breakers are often used as "strong backup", for example:
Fire scenario: by quickly cutting off the power supply, the safety of fire protection equipment and personnel is ensured;
Vacuum circuit breakers have become important equipment for preventing fires in electrical systems through physical isolation, rapid arc extinguishing and structural design. Its high reliability and low maintenance cost also make it the first choice for modern power systems.
ZN85-40.5 vacuum circuit breaker is an upgraded product launched by Shaanxi West Power Tongzhong Electric Co., Ltd. on the basis of the 35KV vacuum circuit breaker with 3AV3 mechanism as the main body. It has been comprehensively optimized and upgraded in terms of mechanical transmission, mechanism body, secondary circuit, etc. It is an indoor switchgear component with a rated voltage of 40.5KV and AC 50HZ. It is used in the fields of new energy (photovoltaic, wind power)
Industrial fields (chemical, steel, petroleum, coal, etc.), power grid systems, and power infrastructure.
ZN85-40.5 vacuum circuit breaker has the following product advantages:
1. Circuit breaker performance: E2-C2-M2
2. Simple and convenient maintenance: With modular structure, the replacement of closing and opening coils does not require the removal of other components. Users can easily replace them, and no test and adjustment are required after replacement, making later operation and maintenance more convenient.
3. High conductivity: The optimized insulation cylinder structure and high-performance soft connection sealed pole are adopted to reduce contact resistance and ensure power supply reliability.
4. Wide range of use: Adapt to harsh environments, the product can withstand low temperatures of minus 25℃. Meet the use requirements of 2000 meters above sea level.
