免接地防雷技术在桐庐LAN宽带网中的应用

Application of Non-grounding Lightning-protection Engineering in Tonglu LAN Broadband Networks

电子信息设备是集电脑技术与集成微电子技术于一体的产品，它的信号电压只有5-10V，这种产品的电磁兼容能力较差，很容易感受脉冲过电压的袭击，又由于它受雷击的概率比较高，受雷电损坏的可能性就大。系统的电源进线接口、信号输入输出接口、较长的接口线路等是感应脉冲过电压容易侵入的因素。针对各信息点的接地施工的极不方便，采用免接地防雷技术可解决这一难题。

Electronic information equipment is a combination of PC technology and integration microelectronic technology. The voltage of its signal is only 5-10 V and its electromagnetic compatibility is bad. Therefore, this product is not good enough to against the pulse surge, and is easy to be destroyed by thunder. Power input interfaces, signal input ＆output interfaces and the long line connectors are the main weaknesses. Because it is not convenient to make grounding protection engineering to solve this connection in the project, it is necessary to find a non-grounding lightning-problem.