介绍高速公路通信系统电源防雷器设置方法，及通信系统电源防雷器件在选择和安装中的注意事项。
The paper introduces the setting up methods for thunder preventer for power source of communication system on freeway.
本文主要针对雷电和操作过电压所引起瞬间过电压对电子设备系统的损坏，来探讨加装电源防雷器时采用四模块和3 +1模块时性能比较和分析。
Aiming at mangling of electron equipment due to transient over voltage from thunder and operation between 4 and 3 + 1 source defend thunder equipments is discussed.
本文主要针对雷电和操作过电压所引起瞬间过电压对电子设备系统的损坏，来探讨加装电源防雷器时采用四模块和3 +1模块时性能比较和分析。
Aiming at mangling of electron equipment due to transient over voltage from thunder and operation between 4 and 3 + 1 source defend thunder equipments is discussed.
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