CCTV系统终端防雷技术
在CCTV系统中,监控室的防雷最为重要,应从直击雷防护、雷电波侵入、等电位连接和电涌保护等多方面进行。监控室所在建筑物应有防直击雷的避雷针、避雷带或避雷网。其防直击雷措施应符合GB50057-94中有关直击雷保护的规定。进入监控室的各种金属管线应接到防感应雷的接地装置上。架空电缆线直接引入时,在入户处应加装避雷器,并将线缆金属外护层及自承钢索接到接地装置上。由于有80%雷击高电位是从电源线侵入的,为保证设备安全,一般电源上应设置三级避雷保护,末级加装中达MP3-10/2防雷模块,该防雷模块标称通流容量为10KA,限制电压<1200V(设备的耐压值为1.2KA)。在视频传输线进入中心控制台前端加装中达SCTV-1B避雷器。在信号控制线进入中心控制台前端加装中达24VAC/2SP避雷器。在电源线进入中心控制台前端加装中达MPDC-24防雷模块。 很强大 支持 呵呵http://www.1goodman.info
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