防雷设计系统中的接地分析

Lighting-Protection Design of the Grounding

针对防雷设计中通信设备和电子设备的防雷接地,根据国家标准要求从外部防雷装置中接地体的选用、有效降低接地电阻的大小和选择合适的联合接地方式等三个方面阐述了合理接地的问题;通过对布线、屏蔽和接地方式,空间磁场对通信线路的电磁感应影响情况和降阻剂对接地电阻的影响实验,总结了能够保护电子设备的安全布线和接地方式。

Against the lighting-protection and grounging of communicational equipment and electronic devices in lighting-protection design, this article,in terms of selecting earth conductor, decreasing earth resistance and choosing proper means of grounding to protect the electronic equipment, describes how to realize the grounding properly. By simulating different wiring, shielding and grounging modes and by the experiments on the effect of space electromagnetic field on electromagnetic induction of communication lines as well as the effect of resistance reducer on earth resistance, the safe means of lightning-protection and grounging for protecting the electronic devices are concluded.