Based on the analysis of invalid ZnO arrester and the live test of ZnO arrester, the alarm current reference value stipulated in the relevant regulation is discussed in this paper.
介绍了氧化锌避雷器带电测试及对失效避雷器的分析和判断,对有关规程中报警电流参考标准值进行了讨论,通过数据统计和实例分析,确定了相应的实施细则。
There are some disadvantages existing in the actual residual current annunciator—when somebody gets an electric shock, before shake off the electric source, the person is in danger of high-voltage far from the human safety voltage.
目前不间断电源漏电保护中采用的剩余电流报警器存在以下不足:当人触电后,在摆脱电源之前,人一直处在危险电压(远大于人的安全电压)触电过程中。