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防雷工程安装有哪些需要注意的地方？

防雷工程安装有哪些需要注意的地方？

浏览：29次 | 提问时间： 08-06 10:12

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清絮 08-06 10:13

你好，希望帮到你
安装避雷针时，应注意以下事项：
1、在选择*避雷针的装设地点时，应使避雷针及其接地装置与配电装置之间保持以下规定的距离：在地面上，由*避雷针到配电装置的导电部分以及到变电所电气设备和构架地部分间的空间距离不应小于6m,在地下，由*避雷针本身的接地装置与变电所接地网间最近的地中距离一般不小于3m。
2、*避雷针的接地电阻一般不宜超过10Ω。
3、为了防止雷击避雷针时，雷电波由电线传入室内，危及人身安全，所以不得在避雷针构架上架设电压线路或通信线路。装有避雷针的构架上的照明灯电源线，必须采用直埋于地下的带金属保护层的电缆或穿入金属管的导线。电缆保护层或金属管必须接地，埋地长度在10m以上，方可与配电装置的接地网连接，货与电源线、低压配电装置相连接。
4、装有避雷针的金属筒体（如烟囱），当其厚度大于4mm时，可作为避雷针的引下线，筒体底部应有对称两处与接地体相连。

卑鄙时刻 08-06 10:22

1、在选择*避雷针的装设地点时，应使避雷针及其接地装置与配电装置之间保持以下规定的距离：在地面上，由*避雷针到配电装置的导电部分以及到变电所电气设备和构架地部分间的空间距离不应小于6m,在地下，由*避雷针本身的接地装置与变电所接地网间最近的地中距离一般不小于3m。
2、*避雷针的接地电阻一般不宜超过10Ω。

Pars巴黎 08-06 10:30

避雷塔接纳法兰连接的节点，避雷针塔法兰打仗面的贴合率不低于75%，用0.3mm塞尺查抄，插入深度的面积之和不得大于总面积的25%，边缘最大间隙不得大于0.8mm。
避雷塔法兰间隙高出0.8mm时，应用垫片垫实，垫片应镀锌，作防腐处理惩罚。接纳避雷针塔节点板连接的节点，相打仗面的两平面贴合率不低于75%，用0.3mm塞尺查抄，插入深度的面积之和不得大于总面积的25%。

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