|
|
|
<p align="center"><font face="黑体" color="#ff0000" size="5"><strong>电压和安全距离</strong></font></p><p><strong><font face="宋体">引</font></strong><span><strong> 言<br/></strong></span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> 电在工业和日常生活中应用极为广泛，在工矿企业和家庭中都有品种繁多的电气设备。为保证电气设备和人身安全，必须认真贯彻国家有关规定，以免使人体受到伤害，财产受到损失。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><b><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">1.</span></b><b><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">安全电压</span></b><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> 交流工频安全电压的上限值，在任何情况下，两导体间或任一导体与地之间都不得超过</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">50V</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">。我国的安全电压的额定值为</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">42</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">，</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">36</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">，</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">24</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">，</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">12</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">，</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">6V</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">。如手提照明灯、危险环境的携带式电动工具，应采用</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">36V</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">安全电压；金属容器内、隧道内、矿井内等工作场合，狭窄、行动不便及周围有大面积接地导体的环境，应采用</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">24</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">或</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">12V</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">安全电压，以防止因触电而造成的人身伤害。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><b><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.</span></b><b><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">安全距离</span></b><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> 为了保证电气工作人员在电气设备运行操作、维护检修时不致误碰带电体，规定了工作人员离带电体的安全距离；为了保证电气设备在正常运行时不会出现击穿短路事故，规定了带电体离附近接地物体和不同相带电体之间的最小距离。安全距离主要有以下几方面：</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.1</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">设备带电部分到接地部分和设备不同相部分之间的距离（见表</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">1</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">）</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.2</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">设备带电部分到各种遮栏间的安全距离（见表</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">）</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.3</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">无遮栏裸导体到地面间的安全距离（见表</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">3</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">）</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.4</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">电气工作人员在设备维修时与设备带电部分间的安全距离（见表</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">4</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">）</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.5</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">安全距离的其他规定</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/><p></p></span></p><p></p><p class="MsoNormal" align="center" style="TEXT-ALIGN: center;"><a href="http://www.powersafety.com.cn/bbs/Localdown.asp?FileName=20064261155552837.gif" target="_blank"></a></p><p><a href="http://www.powersafety.com.cn/bbs/Localdown.asp?FileName=20064261155552837.gif" target="_blank"><img height="395" src="http://www.powersafety.com.cn/bbs/Localdown.asp?FileName=20064261155552837.gif" width="534" border="0" style="WIDTH: 534px; ZOOM: 90%; HEIGHT: 395px;" alt=""/></a><br/><br/> </p><p><a href="http://www.powersafety.com.cn/bbs/Localdown.asp?FileName=20064261156158408.gif" target="_blank"><img height="376" src="http://www.powersafety.com.cn/bbs/Localdown.asp?FileName=20064261156158408.gif" width="504" border="0" style="WIDTH: 504px; ZOOM: 90%; HEIGHT: 376px;" alt=""/></a><br/></p><p class="MsoNormal" align="center" style="TEXT-ALIGN: center;"><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"></span> </p><p class="MsoNormal" align="center" style="TEXT-ALIGN: center;"> </p><p class="MsoNormal" align="left" style="TEXT-ALIGN: center;"><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.5.6</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">屋内出线套管到屋外通道路面的距离：</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">35kV</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">及以下为</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">4000mm</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">，</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">60kV</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">为</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">4500mm</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">，</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">110kV~220kV</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">为</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">5000mm</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;"><br/><br/></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;"> </span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2.5.7</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">海拔超过</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">1000m</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">时，表</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">3</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">中规定的数值应按每升高</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">100m</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">增大</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">1%</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">进行修正。对</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">35kV</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">及以下的而海拔低于</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;">2000m</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt;">时，可不作修正。</span><br/></p> |
|
IP卡
狗仔卡
QQ好友和群
QQ空间
腾讯微博
腾讯朋友
收藏
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡