Talk about the classification of high pressure vacuum switch

The arc extinguishing performance directly affects the performance of the high-pressure vacuum switch. In general, the main components of the high-voltage vacuum interrupter are static and dynamic contacts, shields, bellows, and housings. And the cutoff value should be low. However, from the current development of materials technology, there is no contact material that can meet these requirements at the same time.
The commonly used vacuum switch contact materials include tungsten base, molybdenum base, copper bismuth, copper chrome (CuCr), and the like. The conventional high-voltage vacuum switch generally uses CuCr alloy contacts as the main body. In specific applications, the proportion of the CuCr alloy in the contact materials is often adjusted according to different needs, and the ratio is generally in the range of CuCr25 to Cu-Cr50.