It is found that during the vacuum chamber extinguishing courses,a great deal of X-radiation are released from the vacuum interrupter.

• 一般认为,在进行真空灭弧室的出厂耐压试验时不会产生危及人体健康的X射线,但这忽略了两个非常重要的因素,即过小的开距和较高的外施电压。