信号线路防雷翻译-中英对照
为防止雷电波通过音频、数据线路对相关设备造成危害，依照有关防雷工程的标准规范，在网络通信接口处设置适配的信号线路过电压保护器，确保系统的安全运行。
1.天馈线路：
被保护设备的架空天线必须置于直击雷防护区内，即LPZ0B。
使用同轴电缆作为天馈传输系统的电子设备均应装设适配的过电压保护器，以防来自天馈线路引入的感应过电压波。
2.程控数字用户交换机线路：
程控数字用户交换机及其他通信设备信号线路，根据总配线架所连接的中继线及用户线性质，装设适配的过电压保护器。
3.计算机网络系统：
计算机设备的输入/输出端口处，装设适配的过电压保护器。
4.安全防范系统：
外场摄像机信号控制线输出、输入端口装设适配的过电压保护器。
监控信号的数据传输线装设适配的过电压保护器。
隧道内交通区域控制器以及洞内外各监控、通信、检测设备的输出、输入端口装设适配的过电压保护器。
隧道内火警区域控制器以及中控室火警控制主机输出、输入端口装设适配的过电压保护器。
5.CCTV系统：
进出建筑物的信号传输线，应在出、入口装设适配的过电压保护器。
进出前端设备机房的信号传输线，应装设适配的过电压保护器。
TS703.2 Lightning-protection design of signal circuit
In order to avoid the risk to the relevant equipment through the audio frequency and data circuit induced by lightning interference, in accordance with the relevant standard code of the lightning-protection project, it is required to arrange the proper protecting device of over voltage of signal circuit in the network communication interface, so as to guarantee the safety operation of system.
1. Antenna feeder circuit:
Aerial line of the protected equipments shall be located in the lightning-protection zone directly, namely LPZ0B.
The electronic equipments which applied coaxial-cable as the transmission system of aerial line shall equip with over voltage protecting device, so as to avoid the traveling over voltage caused by the induction of the aerial line.
2. Program-control digital exchange circuit:
As for the program-control digital exchange and signal circuit of other communication equipment, according to the features of the junction line and exchange line of main distribution frame, it is required to arrange proper over voltage protecting device.
3. Network system of computer:
Input/output interface of computer equipment shall have over voltage protecting device.
4. Security system:
Input/output interface of the control line of outfield camera signal shall have proper over voltage protecting device.
The data transmission line of supervisory signal shall have proper over voltage protecting device.
Input/output interface of each controlling device inside the traffic region of tunnel and the supervision, communication, and testing equipments shall have proper over voltage protecting device.
Input/output interface of fire alarm region in tunnel and fire alarm control room shall have proper over voltage protecting device.
5. CCTV system:
Signal transmission line exit and entry the building shall have proper over voltage protecting device.
Signal transmission line exit and entry the front equipment room shall have proper over voltage protecting device.
2013.10。3