What is the role of the glass enclosure of the vacuum interrupter?

Arc is actually the shape of the current in the air, in the final analysis, or the current, the conductivity of the metal is good, of course, can attract current, so the arc ran to the metal grid, the arc energy, of course, can burn metal grating, so the energy of the arc Not on the consumption of it, like Dayu flood control, not to be out is not possible, the key is to ease the arc burning bar that it will not burn the contact, so only for the arc chamber breaker Can be reused.
Part of the main screen shield and bellows shield, generally use oxygen-free copper or stainless steel

main effect:1) to prevent the contact in the arcing process to produce a large number of metal vapor and droplet splashing, pollution of the inner wall of the insulating shell, to avoid causing the vacuum interrupter shell insulation strength decreased or flashover. Bellows shield is mainly to protect the bellows from the corrosion of metal vapor and lead to leakage, and now some of the design is more bold, abolished the bellows shield to reduce costs, reduce the size2) Improve the electric field distribution inside the
vacuum interrupter3) absorbs part of the arc energy, condensing the arc generator. In particular, the vacuum interrupter in the breaking short-circuit current, the arc generated by the heat most of the shielding system is absorbed, help to improve the strength of the media between the contact recovery. The greater the amount of absorption of the arc generator, the greater the energy he absorbs, which is good for increasing the breaking capacity of the Vauum interrupter contactor.You said that the epoxy resin is usually through the APG process, the arc chamber to seal the required materials, the direction is completely different