The application of phase selection close switch in low voltage electrical apparatus test was introduced.
介绍了低压电器产品试验中选相合闸开关的应用。
Only in each column over-voltage protector installed on each phase can get good protection effect.
只有在每柱每相上安装过电压保护器才能得到好的保护效果。
Only in each column over-voltage protector installed on each phase can get good protection effect.
只有在每柱每相上安装过电压保护器才能得到好的保护效果。
应用推荐