近年来 ,随着计算机网络的迅速普及 ,雷电对计算机通讯系统造成的损坏呈逐年上升趋势。因此 ,计算机网络的防雷 ,刻不容缓。1　计算机网络遭雷击的原因从多年的调查资料分析情况来看 ,除直击雷外 ,计算机通讯系统遭受的多为感应雷击。其遭雷击的原因主要有 3个 :①雷电通过通讯 In recent years, with the rapid popularization of computer networks, the damage caused by lightning to computer communication systems has been on the rise year by year. Therefore, the computer network lightning protection, urgent. A computer network was the cause of lightning From many years of investigation of data analysis, in addition to direct lightning, the computer communication system suffered mostly induced lightning. The main reason for the lightning there are three: ① lightning through communications