无接地条件的网络设备防雷方法探讨

Discussing About Lightning Avoiding on No Earth Connection

通信设备无接地条件是通信网络设计及建设中经常遇到的问题。研究了无接地条件下的通信设备雷击危害、雷击电压以及电流特性。主要雷害是雷电过电压引起绝缘击穿,将雷电流引入通信设备。提出了提高绝缘耐压的方法,并给出了具体的数值要求。

There is often no earth connection for the telecommunication equipments in communication networks construction. The lightning hazards of telecommunication equipments, lightning voltage and current were studied.The insulation breakdown resulting from the lightning over-voltage, over current lets the lightning current going into the telecommunication equipments and causes hazards. The improving insulation method and the specific data were provided.