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请问电力杆塔地线设置要遵循什么原则呢？

请问电力杆塔地线设置要遵循什么原则呢？

浏览：33次 | 提问时间： 07-23 03:22

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沉默让关系变得尴尬 07-23 03:22

室外照明设施设置接地装置方法：(1）线路经验明确无电压后，应立即装设拉地线并三相短路。各工作班工作地段两段和有可能送电到停电线路的分支线（包括用户）都要验电、挂接地线，挂、拆接地线应在监护下进行。配合停电的线路可以只在工作地点附近装设一处接地线。（2）禁止工作人员擅自变更工作票中指定的接地线位置。如城变更，应由工作负责人征得工作票签发人同意。（3）同杆塔架设的多层电力线路挂接地线时，应先挂低压，后挂高压；先挂近侧，后挂远侧。拆除时次序相反。（4）成套接地线应用有透明护套的多股软铜线组成，其截面不得小于25mm2，同时应满足装设地点短路电流的要求。禁止使用其他导线做接地线或短路线。接地线应使用专用的线夹固定在导体上，严禁用缠绕的方法进行接地或短路。（5）装设接地线应先接接地端，后接导线端，接地线应接触良好，连接可靠。拆接地线的顺序与此相反。装、拆接地线均应使用绝缘棒或专用的绝缘绳。人体不得碰解接地线或未接地的导线。（6）利用铁塔接地或与杆塔接地装置电气上直接相连的横担接地时，允许每相分别接地，但杆塔接地电阻和接地通道应良好。杆塔与接地线连接部分应清除油漆，接触良好。（7）对于无接地引下线的杆塔，可采用临时接地体。接地体的截面积不得小于190mm2（如φ16圆钢）。接地体在地面下深度不得小于0.6m。对于土壤电阻率较高地区，如岩石、瓦砾、沙土等，应采取增加接地体根数、长度、面积或埋地深度等措施改善接地电阻。（8）在同杆塔架设多回线路杆塔的停电线路上装设接地线，应采取措施防止接地线摆动，并满足表7-14安全距离的规定。断开耐张杆塔引线时，应先在断开引线的两侧装设接地线。（9）电缆及电容器接地前应逐相充分放电，星形接线电容器的中性点应接地，串联电容器及与整组电容器脱离的电容器应逐个放电，装在绝缘支架上的电容器外壳也应放电。

深情葬海旧人未亡 07-23 03:31

规划高压走廊要求：应综合考虑所在城市的气象条件、导线最大风偏、边导线与建筑物之间安全距离、导线最大弧垂、导线排列方式以及杆塔形式、杆塔档距等因素，通过技术经济比较后确定;高压走廊也称高压架空电力线路走廊，是电力线路的一种，电力线路还包括电力电缆线路。

prettyboy 07-23 03:39

输电杆塔是用地脚螺栓与螺母固定的，杆塔是支承架空线路导线和架空地线，并使导线与导线之间，导线和架空地线之间，导线与杆塔之间，以及导线对大地和交叉跨越物之间有足够的安全距离。希望可以帮到你

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