一种消除雷击浪涌跨步电压威胁的大楼防雷接地方式

A New Method of Lightning Protection and Grounding to Eliminate the Threat of Step Voltage formed in the Lightning Surge

以往电信和电力行业有关防雷接地规范采用的"联合接地"方式,只能满足单独机房在雷击下不受浪涌大电流的影响,不能满足互联多机房(特别是跨楼层互联)的特殊应用。本文推荐的"防雷接地汇集线与工作、保护接地汇集线分离"防雷接地方式,能够完全克服雷击浪涌形成的跨步电压对设备的威胁,在多楼层机房互联情况下保障各机房设备的正常运行。

The United grounding used in telecommunications and power industry in the past, can only prevent separately computer room from influence of lightning surge current. This mode can not meet the special application on several interconnection computer rooms （especially the inter-floor connectivity）. This paper recommended a new method of lightning protection and grounding： separation of lightning grounding line with work grounding line and protection grounding line, which is able to completely overcome the threat of step voltage formed in the lightning surge, and to ensure the normal operation of inter-floor＇s several interconnection computer rooms.