A vacuum degree measuring instrument of a vacuum switch without the detachment of an arc extinguishing chamber belongs to the detection field.
一种不拆卸灭弧室真空开关的真空度测量仪属于检测领域。
This paper describes the magnetic field structure of the contactors in arc-extinguishing chamber, permanent magnet device and the types of vacuum circuit breaker.
阐述了真空断路器的灭弧室触头磁场的结构、永磁机构及种类，详述了真空开关的常见问题与选型注意事项。
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