跳至主要内容

Insulation of vacuum interrupter


Vacuum circuit breaker insulation is divided into fracture insulation, interphase insulation and insulation to the ground. vacuum interrupter in the vacuum circuit breaker in addition to breaking the working current and short circuit current, but also bear the task of fracture isolation. At present, the manufacturer of interrupter is good and bad, in order to ensure the vacuum circuit breaker in the safe and reliable operation of the power system, vacuum interrupter as the core of the vacuum circuit breaker device to ensure its insulation capacity, select the quality assurance manufacturers is essential The
Vauum interrupter contactor insulation is divided into internal insulation and external insulation, the internal insulation is divided into static insulation and dynamic insulation. In the type test, the insulation of the vacuum interrupter mainly assess the short-time power frequency withstand voltage and lightning impulse withstand voltage, and in actual use, due to grid conditions and the use of different environments, vacuum interrupter insulation needs Consider the factors, such as breaking the small inductor current cut off the over-voltage, open the fault load when the heavy blow through the voltage and in the high temperature, hot and humid, dirty, high altitude and other harsh conditions of insulation tolerance ability. In view of the above factors, the insulation of the vacuum interrupter mainly from the insulation design, manufacturing process and the use of three ways to consider. Insulation design and manufacturing process is done by the manufacturer of the vacuum interrupter, while the use of the need for more vacuum circuit breaker manufacturers to consider.

Vacuum interrupter in the design and manufacture of the insulation after the completion of the guarantee, does not mean that can be used under any conditions, empty interrupter in the practical application of the insulation problem is limited by the use of conditions, circuit breaker manufacturing Manufacturers must be based on the use of end-users place to make a different design to meet the insulation needs.

标签

标签：

评论

发表评论

此博客中的热门博文

What is the effect of the arc extinguishing device?

Is to pull the arc, sub-section, Vauum interrupter contactor device is to prevent the contact when the arc spark caused by unnecessary losses caused by the set. In a high current circuit, the contact or switch off and forth will produce arc spark, may cause the following hazards: 1, burn contact contacts, etc., over time so that the circuit is bad, resulting in circuit damage. 2, may be on the human eye, skin and other arc burns caused by the human body can not be speculation of the harm.   3, in some places sensitive to arc spark, such as gas plant or filling the flammable gas where a little bit of the spark sparks may cause an explosion and so on. 4, the spark sparks may be with the circuit for some electronic products (such as integrated circuits) caused by breakdown damage. So for safety reasons, in a large current may cause contact contacts and other places have to install a metal box to shield the spark sparks, vacuum interrupter is the most common.
发表评论
阅读全文

The process of vacuum interrupter production

The exhaust platform process refers to the vacuum interrupter parts through brazing and argon arc welding process to be made into the exhaust pipe, and then connected to the exhaust platform for vacuum and baking degassing, and finally cold folder The process of sealing. This process, the process is complex, long route, generally have 9 processes. So the efficiency is low and the Vauum interrupter contactor parts of the pollution links. Moreover, according to this process to produce vacuum interrupter baking temperature is low (450 ℃ or so), and thus degassing is not complete. A row of packaging technology Refers to the vacuum interrupter parts of the first brazing into several parts, and then several parts assembled into the vacuum interrupter the whole, and then in the vacuum furnace to complete the exhaust, bake to the gas and brazing sealing process. This process, the process is relatively simple, there are generally 7 processes, and thus more efficient and less polluting man. ...
发表评论
阅读全文