It is mainly applied to the power transmission and distribution control system, and it is also applied to the distribution systems of metallurgy, mine, petroleum, chemical, railway, broadcasting, communication and industrial high frequency heating. Vacuum interrupter has the characteristics of energy saving, material saving, fire prevention, explosion-proof, small volume, long life, low maintenance cost, reliable operation and no pollution. The vacuum interrupter is divided into the use of the interrupter and the load switch.
Construction of Vacuum Circuit Breaker
It is very simple in construction as compared to any other circuit breaker. Their construction is mainly divided into three parts, i.e., fixed contacts, moving contact and arc shield which is placed inside the arc interrupting chamber.
vacuum-circuit-breakerThe outer envelope of vacuum circuit breaker is made up of glass because the glass envelope help in the examination of the breaker from outside after the operation. If the glass becomes milky from its original finish of silvery mirror, then it indicates that the breaker is losing vacuum.
1. The arc is extinguished in a sealed container, and the arc and hot gas are not exposed. As an independent component, the arc extinguishing chamber is easy to install and debug.
2. The arc extinguishing time is short, the arc voltage is low, the arc energy is small, the contact loss is small, and the breaking times are many.
3. The arc extinguishing medium or insulating medium does not use oil, so there is no danger of fire and explosion.
Maintenance cycle of vacuum circuit breaker.The vacuum circuit breaker has the characteristics of high reliability, long service life and relatively long maintenance and repair cycle, but it can not be mistaken that the vacuum circuit breaker does not need maintenance. The maintenance cycle should be flexibly controlled according to relevant regulations and in combination with the actual operating conditions.