2010年安全工程师考试辅导:漏电保护(剩余电流保护)
漏电保护(剩余电流保护)
漏电保护装置主要用于防止间接接触电击和直接接触电击。漏电保护装置也用于防止漏电火灾和监测一相接地故障。
电流型漏电保护装置以漏电电流或触电电流为动作信号。动作信号经处理后带动执行元件动作,促使线路迅速分断。
电流型漏电保护装置的额定动作电流从6mA至
(1)30及30mA以下的属高灵敏度,主要用于防止触电事故,
(2)30mA以上、1000及1000mA以下的属中灵敏度,用于防止触电事故和漏电火灾;
(3)1000mA以上的属低灵敏度,用于防止漏电火灾和监视一相接地故障。
为了避免误动作保护装置的额定不动作电流不得低于额定动作电流的1/2。
漏电保护装置的动作时间指动作时最大分断时间。快速型和定时限型漏电保护装置的动作时间应符合表1-7的要求。
表1-7 漏电保护装置的动作时间
额定动作电流I△N /mA |
额定电流/A |
动作时间 | |||
I△N |
2I△N |
|
5I△N | ||
≤30 |
任意值 |
0.2 |
0.1 |
0.04 |
|
>30 |
任意值 |
0.2 |
0.1 |
|
0.04 |
≥40 |
0.2 |
|
|
0.15 |
应安装漏电保护装置的场所:
(1)有金属外壳的Ⅰ类移动式电气设备和手持式电动工具,
(2)安装在潮湿或强腐蚀等恶劣场所的电气设备,
(3)建筑施工工地的施工电气设备,
(4)临时性电气设备,
(5)宾馆类的客房内的插座、
(6)触电危险性较大的民用建筑物内的插座
(7)游泳池或浴池类场所的水中照明设备。
(8)安装在水中的供电线路和电气设备,
(9)医院中直接接触人体的医用电气设备(胸腔手术室的除外)等
漏电保护装置的选用应当考虑多方面的因素。
(1)在浴室、游泳池、隧道等电击危险性很大的场合,应选用高灵敏度的漏电保护装置。
(2)单相线路选用二级保护器,仅带三相负载的三相线路可选用三级保护器,
(3)动力与照明合用的三相四线线路和三相照明线路必须选用四级保护器。
运行中的漏电保护装置应当定期检查和试验。保护器外壳各部及其上部件、连接端子应保持清洁,完好无损;胶木外壳不应变形、变色;不应有裂纹和烧伤痕迹;制造厂名称(或商标)、型号、额定电压、额定电流、额定动作电流等应标志清楚,并应与运行线路的条件和要求相符合。保护器外壳防护等级应与使用场所的环境条件相适应。接线端子不应松动;连接部位不得变色。接线端子不应有明显腐蚀。保护器工作时不应有杂音。漏电保护开关的操作手柄应灵活、可靠,使用过程中也应定期用试验按钮试验其可靠性。
- 上一篇:电气隔离
- 下一篇:2010年安全工程师考试辅导:火灾防治途径和阻燃方法
![nxmor(游客)](/blog/images/ico_default.gif)
http://slide.games.sina.com.cn/search.php?k=a6%C6%BD%CC%A8%D7%A2%B2%E1%B5%D8%D6%B7%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%CB%AD%B4%FA%C0%EDa6%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%CB%AD%B4%FA%C0%EDa6%C6%BD%CC%A8%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=a6%C6%BD%CC%A8%BD%B1%BD%F0%B6%E0%C9%D9%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=a6%C6%BD%CC%A8%B7%B5%B5%E3%B6%E0%C9%D9%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=a6%BD%B1%BD%F0%B6%E0%C9%D9%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=a6%B7%B5%B5%E3%B6%E0%C9%D9%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=a6%BD%B1%BD%F0%B8%DF%C2%F0%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=a6%C6%BD%CC%A8%BD%B1%BD%F0%B8%DF%C2%F0%2B44686%28Q%29
![artyb(游客)](/blog/images/ico_default.gif)
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E6%B3%A8%E5%86%8C%E7%BD%91%E5%9D%80%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E5%AE%89%E5%8D%93%E6%89%8B%E6%9C%BA%E5%AE%A2%E6%88%B7%E7%AB%AF%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90app%E4%B8%8B%E8%BD%BD%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E4%BB%A3%E7%90%86%E8%BF%94%E7%82%B9%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E9%AB%98%E8%BF%94%E7%82%B9%E4%BB%A3%E7%90%86%E5%BC%80%E5%8F%B7%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E4%BB%A3%E7%90%86%E7%BA%A7%E5%88%AB%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E6%9C%89%E7%BE%A4%E5%90%97%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E9%9D%A0%E8%B0%B1%E5%90%97%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
http://so.iqiyi.com/so/q_%E4%B8%8B%E8%BD%BD%E5%87%A4%E5%87%B0%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%EF%BC%8B%EF%BC%B1%EF%BC%94%EF%BC%94%EF%BC%96%EF%BC%98%EF%BC%96/
![cuxzc(游客)](/blog/images/ico_default.gif)
http://wen.28.com/article/51892
http://wen.28.com/article/51893
http://wen.28.com/article/51895
http://wen.28.com/article/51894
http://wen.28.com/article/51896
http://wen.28.com/article/51897
http://wen.28.com/article/51898
http://wen.28.com/article/51899
http://wen.28.com/article/51900
![cyptw(游客)](/blog/images/ico_default.gif)
http://wen.28.com/article/20613
http://wen.28.com/article/20614
http://wen.28.com/article/20615
http://wen.28.com/article/20616
http://wen.28.com/article/20617
http://wen.28.com/article/20618
http://wen.28.com/article/20619
http://wen.28.com/article/20620
http://wen.28.com/article/20621
![baqsv(游客)](/blog/images/ico_default.gif)
http://wen.28.com/article/60680
http://wen.28.com/article/60682
http://wen.28.com/article/60681
http://wen.28.com/article/60683
http://wen.28.com/article/60684
http://wen.28.com/article/60685
http://wen.28.com/article/60686
http://wen.28.com/article/60687
http://wen.28.com/article/60688
![oyptw(游客)](/blog/images/ico_default.gif)
http://www.anqiu123.com/store-1787/document-id-438879.html
http://www.anqiu123.com/store-1787/document-id-438881.html
http://www.anqiu123.com/store-1787/document-id-438882.html
http://www.anqiu123.com/store-1787/document-id-438884.html
http://www.anqiu123.com/store-1787/document-id-438885.html
http://www.anqiu123.com/store-1787/document-id-438887.html
http://www.anqiu123.com/store-1787/document-id-438889.html
http://www.anqiu123.com/store-1787/document-id-438891.html
http://www.anqiu123.com/store-1787/document-id-438892.html
![fuzbe(游客)](/blog/images/ico_default.gif)
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548514?qu=57377uy
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548513?fu=58813rv
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548515?li=40628pt
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548535?yu=49739fj
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548599?gu=03116dh
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548679?xiu=56130bf
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548678?chui=06284zd
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548676?bin=80157xb
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13548677?jia=84062vz
![ndeae(游客)](/blog/images/ico_default.gif)
http://www.esafety.cn/blog/u/3012/archives/2011/114380.html
http://www.anqiu123.com/store-1787/document-id-465386.html
http://bbs.tga.plu.cn/thread-3550786-1-1.html
http://www.esafety.cn/blog/wll/66030/archives/2012/125042.html
http://www.anqiu123.com/store-1787/document-id-465387.html
http://www.esafety.cn/blog/u/9490/archives/2010/103449.html
http://www.anqiu123.com/store-1787/document-id-465389.html
http://www.esafety.cn/blog/wll/73171/archives/2011/112890.html
http://www.anqiu123.com/store-1787/document-id-465390.html
![dmceh(游客)](/blog/images/ico_default.gif)
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187535?shu=56046
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187557?lai=47702
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187561?cha=65029
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187564?cai=13785
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187562?chang=17547
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187595?xi=36691
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187590?yu=60257
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187607?hu=10574
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14187618?ao=88130
![mdswz(游客)](/blog/images/ico_default.gif)
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E5%A4%A9%E6%B4%A5%E6%97%B6%E6%97%B6%E5%BD%A9%2B952499%28Q%29usk
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%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%2B952499%28Q%29rva
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E7%A6%8F%E5%BD%A93D%2B952499%28Q%29ayq
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E5%8F%8C%E8%89%B2%E7%90%83%2B952499%28Q%29qog
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E9%AB%98%E9%A2%91%E5%BD%A9%E7%A5%A8%2B952499%28Q%29util
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E9%AB%98%E9%A2%91%E5%BD%A9%E7%A5%A8%2B952499%28Q%29twyc
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E5%AE%89%E5%85%A8%E5%90%97%2B952499%28Q%29fetv
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E5%AE%89%E5%85%A8%E5%90%97%2B952499%28Q%29yvnp
http://search.zbj.com/t/?kw=%E8%87%B3%E5%B0%8A%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E5%9C%A8%E5%9B%BD%E5%A4%96%E5%90%97%2B952499%28Q%29nrv
![iybdg(游客)](/blog/images/ico_default.gif)
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E8%B5%B0%E5%8A%BF%E5%9B%BE%E5%BC%80%E8%AE%B2%E5%8E%86%E5%8F%B2%28Q952499%29lpt
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E5%90%8E%E4%B8%80%E5%AE%9A%E4%BD%8D%E8%83%86%28Q952499%29chjf
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E5%90%8E%E4%B8%89%E4%B8%8D%E5%AE%9A%E4%BD%8D%28Q952499%29nrvzd
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E5%90%8E%E4%B8%80%E4%B8%8D%E5%AE%9A%E4%BD%8D%E6%8A%80%E5%B7%A7%28Q952499%29lptxb
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E5%90%8E%E4%B8%80%E5%AE%9A%E4%BD%8D%E5%87%BA%E4%B8%A4%E4%B8%AA%E5%8F%B7%28Q952499%29jnr
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E5%90%8E%E4%B8%80%E5%AE%9A%E4%BD%8D%E8%A7%86%E9%A2%91%28Q952499%29zdhl
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E5%90%8E%E4%B8%80%E5%AE%9A%E4%BD%8D%E4%B8%93%E4%B8%9A%E8%AE%A1%E5%88%92%28Q952499%29txb
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E5%90%8E%E4%B8%80%E7%B2%BE%E5%87%86%E5%AE%9A%E4%BD%8D%28Q952499%29jnrv
http://www.biomart.cn/product/s?wd=%E9%87%8D%E5%BA%86%E6%97%B6%E6%97%B6%E5%BD%A9%E4%B8%8D%E5%AE%9A%E4%BD%8D%E8%83%86%28Q952499%29xwl
![bfjnr(游客)](/blog/images/ico_default.gif)
http://www.metacafe.com/videos_about/20161008%3A%E6%9C%89%E4%BA%BA%E8%A2%AB%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E9%BB%91%E8%BF%87%E5%90%97%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E6%9C%89%E4%BA%BA%E8%A2%AB%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E9%BB%91%E8%BF%87%E5%90%97%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E6%97%B6%E6%97%B6%E5%BD%A9%E5%B9%B3%E5%8F%B0%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E5%A5%BD%E5%90%97%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E5%A5%BD%E5%90%97%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E5%8D%A1%E5%90%97%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E5%8D%A1%E5%90%97%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E6%9C%89%E4%B8%8D%E8%89%AF%E8%AE%B0%E5%BD%95%E5%90%97%28Q%29952499%28Q%29/
http://www.metacafe.com/videos_about/20161008%3A%E5%A4%A7%E5%9C%A3%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E6%9C%89%E4%B8%8D%E8%89%AF%E8%AE%B0%E5%BD%95%E5%90%97%28Q%29952499%28Q%29/
![原创(游客)](/blog/images/ico_default.gif)
![原创(游客)](/blog/images/ico_default.gif)
![原创(游客)](/blog/images/ico_default.gif)
![易安
博客](/blog/skin/missmoon/images/logo_powered.gif)
易安博客 版权所有