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防雷接地设备有哪些?

浏览:38次 | 提问时间: 07-10 08:57
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3个答案
寕鸠 07-10 08:58

(1)无线通信天线塔上应设避雷针,塔上的天馈线和其他设施都应在其保护 范围内。
(2)避雷针的雷电流引下线应专设,引下线应与避雷针及塔基接地网相互焊 接连通。
(3)天线塔上的天线支架、框架、航空标志灯架、馈线走线架都应良好接地; 天线馈线及塔灯控制线的金属外护层应在塔顶及进机房入口处的外侧就近接地;走线架上塔的天线馈线,应在其转弯上方 0.5~1m 范围内作良好接地;在进机房入口处,天线的馈线应对地加装馈线避雷器,塔灯控制线的每根相线均应分别对地加装氧化锌无间隙避雷器,零线直接接地。
(4)天线塔位于机房建筑物旁边时,天线塔的接地网与机房地网之间,至少应有两处(间隔 3~5m)相互焊接连通;当天线塔位于机房建筑物屋顶时,金属支承杆和雷电流引下线应至少在两个不同方向与屋顶的避雷带可靠连接。

掌声送给你 07-10 09:06

防雷是一个系统工程,我们防雷都是从防直击雷,雷电感应,雷电波侵入,三方面来做的,以此相关的设备呢很多,接闪器一般有避雷针,避雷网,避雷带,还有一些金属设备,这些都是防雷设备的,当然还有避雷器,等电位连接,接地等都是。
您参考一下,希望我的回答能帮到你。

死囚漫步 07-10 09:14

防雷接地设备有 1、金属构件接地。避雷线或接地线与屋面及外露的其他金属物体(管道、金属扶手、风机、冷却塔及建筑物景观照明灯、设备外壳及设备基础等金属物体)连成一个整体的电气通路。2、金属构件接地。此次楚天杯检查发现进行了金属构件接地而且施工比较规范的并不多。
3、设备金属外壳及设备基础接地。利用就近的金属钢导管和接地干线与设备金属外壳及设备基础接地,防止漏电事故。
4、设备金属外壳及设备基础接地----金属软管不能做接地(PE)或接零(PNE)的持续导体,采用接地导线专用接头跨接并应做接地标记。
5、设备房接地--变配电室接地变压器基础槽钢与接地干线连接

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