直击雷过电压
直击雷过电压-
为了防止雷电通过直击雷过电压和感应过电压这2种途径入侵电力通信系统，提出采用通信弱电信号电涌保护器（SPD）的防范措施。
For preventing the thunder including the direct thunder overvoltage and inductive thunder overvoltage to rush at electric communication system , brings forward the defense measure that adopted surge protection device ( SPD ) using in communication weak electric signal .