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href="http://www.jczxnmz.cn/tech/list_66_1.html">电工基础</a> > 关于低压电器种类、配电电器和保护电器选择的技术要求</td> <td align="right"> <div id="pd5bzdb" class="search"> <script type="text/javascript">(function(){document.write(unescape('%3Cdiv id="bdcs"%3E%3C/div%3E'));var bdcs = document.createElement('script');bdcs.type = 'text/javascript';bdcs.async = true;bdcs.src = 'http://znsv.baidu.com/customer_search/api/js?sid=2792369297701893233' + '&plate_url=' + encodeURIComponent(window.location.href) + '&t=' + Math.ceil(new Date()/3600000);var s = document.getElementsByTagName('script')[0];s.parentNode.insertBefore(bdcs, s);})();</script> </div></td> </tr> </table> </div> </div> <div id="pd5bzdb" class="section clearfix">  <div id="pd5bzdb" class="show_page_content"> <div id="pd5bzdb" class="news_list_page"> <div id="pd5bzdb" class="meta"> <h1>关于低压电器种类、配电电器和保护电器选择的技术要求</h1> <p class="meta-info"> <span id="pd5bzdb" class="time">2020/11/20 3:23:37</span> <span id="pd5bzdb" class="comm"><script type="text/javascript" src="/tools/submit_ajax.ashx?action=view_comment_count&id=3453"></script>人评论</span> <span id="pd5bzdb" class="view"><script type="text/javascript" src="/tools/submit_ajax.ashx?action=view_article_click&id=3453&click=1"></script>次浏览</span> 分类：电工基础文章地址：<a href="http://www.jczxnmz.cn/tech/3453.html" target="_blank">http://www.jczxnmz.cn/tech/3453.html</a> </p> </div> <div id="pd5bzdb" class="entry"> <p> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">昌晖仪表在本文分享<a href="http://www.jczxnmz.cn/tech/1600.html" target="_blank"><span style="color:#337FE5;">低压电器</span></a>种类、配电电器选择的一般技术要求和保护电器的特殊技术要求干货知识，帮助大家在电气设计时正确选配低压电器产品。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;"><br /> <span style="font-family:SimHei;">低压电器的种类</span></span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">1、开关电器和隔离电器：包括开关、隔离器、隔离开关。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">2、?；さ缙鳎喊ǘ下菲?、熔断器和剩余电流动作?；さ缙?。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">3、控制电器：包括接触器、启动器。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">4、计量电器：包括电流互感器和各种电参数计量、<a href="http://www.jczxnmz.cn/product/list_78.html" target="_blank"><span style="color:#337FE5;">电力仪表</span></a>(<span style="color:#000000;"><span style="color:#000000;">http://www.jczxnmz.cn/product</span><span style="color:#000000;">/list_78.html)。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;"><br /> 以上1、2项统称为配电电器，是电气设计的主要内容，特别是?；さ缙鳎诘脱古涞缦低持芯哂刑厥庵匾匚?，是关系到用电安全、供电可靠的主要因素，对其性能和技术参数应有较多了解。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;"><br /> <span style="font-family:SimHei;">配电电器选择的一般技术要求</span></span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">配电设计选用的低压配电电器应符合现行的相关国家标准，必要时还应经过质量认证和能效认证，并应符合以下技术要求：</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">1、电器应适应所在场所的环境条件，应按GB/T16895.18-2010《建筑物电气装置第5-51部分：电气设备的选择和安装通用规则》的要求，考虑各种外界的影响，包括环境温度、空气湿度、灰尘、水、腐蚀性气体、振动、电磁辐射、高海拔(大于2000m)的特殊条件。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">考虑到电器的防水、防固体异物(粉尘)进入及防止人体接近危险(带电)部件，选用封闭电器外壳的防护等级与应用见附录B。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">2、电器的额定频率应与配电系统的频率统一。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">3、电器的额定电压应与配电回路的标称电压相适应(交流为方均根值)。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">4、电器的额定电流不应小于所在配电回路的计算电流或工作电流。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">5、电器应具有必要的短时耐受能力，能满足短路条件下的动稳定和热稳定。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;"><br /> <span style="font-family:SimHei;">保护电器的特殊技术要求</span></span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">?；さ缙髯魑缌骱凸收戏阑さ闹匾缙?，除应符合上述一般技术要求外，还应满足以下特殊技术要求：</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">1、接地故障时，按规定条件自动切断电源。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">2、短路时，自动切断电源，以满足线路的热稳定和动稳定要求。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">3、符合过负荷?；ひ螅罕；さ缙鞯牟问捅槐；は呗返继褰孛婊侠砼浜?，以保证导体在达到最终温度前切断电源。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">4、用电设备(含照明设备)正常工作和启动过程中，不应切断电源。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">5、各种故障条件下，上下级?；さ缙饔τ醒≡裥远?，力求切断电路的范围最小。</span><br /> <span style="color:#000000;line-height:2;font-family:Microsoft YaHei;font-size:16px;">6、发生短路等故障时，短路?；さ缙饔哂蟹侄献畲蠖搪返缌鞯哪芰?，对于断路器还应具有接通最大短路电流的能力。<br /> <br /> </span></span></span> </p> <p> <span style="color:#000000;line-height:2;font-family:SimHei;font-size:16px;">相关阅读</span><br /> <span style="color:#000000;line-height:2;font-family:SimHei;font-size:16px;"><a href="http://www.jczxnmz.cn/tech/1631.html" target="_blank"><span style="color:#000000;font-family:KaiTi_GB2312;">断路器正常使用及安装条件,仪表人也该知道</span></a></span><br /> <span style="color:#000000;line-height:2;font-family:SimHei;font-size:16px;"><a href="http://www.jczxnmz.cn/tech/1621.html" target="_blank"><span style="color:#000000;font-family:KaiTi_GB2312;">老帕谈为何低压断路器的进出线方向不能反接</span></a></span><br /> <span style="color:#000000;line-height:2;font-family:SimHei;font-size:16px;"><a href="http://www.jczxnmz.cn/tech/2604.html" target="_blank"><span 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