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雷電計數器校驗儀廠家
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防雷均壓環

發布日期:2021-01-12瀏覽次數:1029標簽:雷電計數器校驗儀廠家
防雷均壓環是高層建筑物為脅制擊雷而方案的盤繞建筑物周邊的水平避雷帶。防雷類別為一類時建筑物應裝設均壓環,環間垂直距離不應大于12m,悉數引下線、建筑物的金屬布局和金屬設備均應連到環上。均壓環可把持電氣設備的接地干線環路。在方案上均壓環應組成閉合圈,此閉合圈必須與悉數的引下線銜接。要求每隔一段高度設一均壓環拜會中華國民共和國國家標準gb 50057-94《建筑物防雷方案規范》(2000年版)第3.2.4條design code for protection ofstructures against lightning
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欧美 亚洲 另类 丝袜 自拍 动漫