什么是接地装置？如何设置？
作者[孙锡云] 发表于[2010-11-21 8:57:00]
什么是接地装置？如何设置？
接地体与接地线的总和称为接地装置。
施工现场接地装置采用圆钢、钢管、角钢、扁钢等材料制作，其最小规格尺寸为：国钢，直径不小于4mm；钢管，壁厚不小于3.5mm；角钢，厚度不小于4mm；扁钢，截面不小于48平方毫米。螺纹钢不能用作接地体。
设置接地装置时，应先将接地体（网）焊接好，每组接地体同时焊接二极以上导体作接地线，然后埋入地中，并将土壤夯实。接地线应自接地体的不同位置焊接引出至地面，接地线与接地线的连接处亦应焊接，采用搭接焊时，对于扁钢其搭接长度应为其宽度的2倍；对于圆钢其搭接长度应为其直径的6倍。接地线与接地设备的连接可用焊接或螺栓连接，用螺栓连接时应设防松螺帽或防松垫片。
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http://www.jxedt.com/wen/kaoshi/3169955841733361754.html
Re:在漫画中识别身边的违章
作者[pfiko(游客)] 发表于[2016-10-10 20:48:05]
http://www.jxedt.com/wen/kaoshi/3169908517815582774.html
http://www.pinterest.com/vrvzdhlpt/a6%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E6%B1%9F%E8%A5%BF%E6%97%B6%E6%97%B6%E5%BD%A9%2B952499q/
http://www.esafety.cn/blog/wll/66030/archives/2013/128523.html
http://www.jxedt.com/wen/qita/3169908524386025554.html
http://www.jxedt.com/wen/kaoshi/3169908524386025554.html
http://www.jxedt.com/wen/qita/3169908532976943186.html
http://www.jxedt.com/wen/kaoshi/3169908532976943186.html
http://www.wodai.com/wenda/q-1087391.html
http://www.jxedt.com/wen/qita/3169908539292581942.html
http://www.jxedt.com/wen/kaoshi/3169908539292581942.html
Re:在漫画中识别身边的违章
作者[tvzdh(游客)] 发表于[2016-10-8 19:03:56]
http://www.metacafe.com/videos_about/20161008%3AE8%E5%A8%B1%E4%B9%90%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E5%9C%B0%E5%9D%80%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E7%9B%B4%E5%B1%9E%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E4%BB%A3%E7%90%86%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E9%BB%91%E9%92%B1%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E5%B9%B3%E5%8F%B0%E5%87%A0%E5%B9%B4%E4%BA%86%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E5%B9%B3%E5%8F%B0%E9%BB%91%E9%92%B1%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E5%B9%B3%E5%8F%B0%E6%80%BB%E4%BB%A3%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3AE8%E5%B9%B3%E5%8F%B0%E7%9B%B4%E5%B1%9E%28Q%29952499%28Q%29/
原创
作者[原创(游客)] 发表于[2016-9-30 14:50:53]
http://rywkdks.lofter.com/post/1e698063_c7f51e6 http://njryw168.lofter.com/post/1e6983e5_c7ee3b1 http://rywkdks.lofter.com/post/1e698063_c7f9eda http://rywydx.lofter.com/post/1e6a68e3_c815353 http://njryw168.lofter.com/post/1e6983e5_c7ee8ba http://rywydx.lofter.com/post/1e6a68e3_c812e5a http://rywydx.lofter.com/post/1e6a68e3_c8155ab http://rywkdks.lofter.com/post/1e698063_c7f7cbd http://rywydx.lofter.com/post/1e6a68e3_c80dd2a http://njryw168.lofter.com/post/1e6983e5_c7f195a
原创
作者[原创(游客)] 发表于[2016-9-28 20:10:26]
http://wztgywj.lofter.com/post/1e65f473_c6ef48e http://seogsywj.lofter.com/post/1e634756_c6de173 http://wztgywj.lofter.com/post/1e65f473_c6edd1d http://seogsywj.lofter.com/post/1e634756_c6df249 http://wztgywj.lofter.com/post/1e65f473_c6e9f78 http://bjseoywj.lofter.com/post/1e66bf3e_c711622 http://bjseoywj.lofter.com/post/1e66bf3e_c7103f7 http://wztgywj.lofter.com/post/1e65f473_c6edda1 http://ywjseo.lofter.com/post/1e634752_c652d6d http://wztgywj.lofter.com/post/1e65f473_c6ed1b1
原创
作者[原创(游客)] 发表于[2016-9-6 20:33:43]
http://njryw2016.lofter.com/post/1e59a72f_c385aa9 http://njryw2016.lofter.com/post/1e59a72f_c385aa8 http://njryw2016.lofter.com/post/1e59a72f_c385aa7 http://njryw2016.lofter.com/post/1e59a72f_c385aa6 http://njryw2016.lofter.com/post/1e59a72f_c385aa5 http://njryw2016.lofter.com/post/1e59a72f_c385aa4 http://njryw2016.lofter.com/post/1e59a72f_c385aa3 http://njryw2016.lofter.com/post/1e59a72f_c385aa2 http://njryw2016.lofter.com/post/1e59a72f_c385aa1 http://njryw2016.lofter.com/post/1e59a72f_c385aa0
Re:什么是接地装置？如何设置？
作者[libaojian] 发表于[2011-1-1 19:31:21]
很不索亚
