In a10kV distribution system,when shunt ca-pacitors are switched off by vacuum circuit breakers,restrike overvoltage often occurs.

力系统中使用真断路器切除无功补偿用并联容器时,容易产生重燃过,重影响并联容的安全运行。

This paper introduces the working principle and blockdiagram of impulse magnet controlled discharge method that is used in the vacuity tester.

真测试仪在测试高真断路器真室真时具有操作及安装简便、测试结果可信等优点。