淺談高壓斷路器回路電阻測試標(biāo)準(zhǔn)及電阻過大原因-上?？档请姎饪萍加邢薰?/title> <link type="text/css" rel="stylesheet" href="/Skins/106676/css/index.css" /> <script src="/skins/106676/js/jquery-3.6.0.min.js"></script> <link rel="stylesheet" type="text/css" href="/skins/106676/css/swiper.min.css"> <script type="text/javascript" src="/skins/106676/js/swiper.min.js"></script>  <script language="javascript" type="text/javascript"> var nav= '5'; var menu= '0'; </script>  <link rel="shortcut icon" href="/skins/106676/favicon.ico"> <script type="application/ld+json"> { "@context": "https://ziyuan.baidu.com/contexts/cambrian.jsonld", "@id": "http:///Article-3451508.html", "title": "淺談高壓斷路器回路電阻測試標(biāo)準(zhǔn)及電阻過大原因", "pubDate": "2023-08-22T07:30:53", "upDate": "2023-08-22T07:30:53" }</script> <script language="javaScript" src="/js/JSChat.js"></script><script language="javaScript">function ChatBoxClickGXH() { DoChatBoxClickGXH('https://chat.chem17.com',83189) }</script><script>!window.jQuery && 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</form> </div> <div id="iqaqewgi6e" class="clear"></div> </div> </div> <div id="iqaqewgi6e" class="nybanner"><img src="/skins/106676/images/nybanner.jpg"></div> <script src="http://www.chem17.com/mystat.aspx?u=mbdzkj"></script>  <div id="iqaqewgi6e" class="ncontent w_1100"> <div id="iqaqewgi6e" class="h-6">技術(shù)文章<span>您當(dāng)前的位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 淺談高壓斷路器回路電阻測試標(biāo)準(zhǔn)及電阻過大原因</span></div>  <div id="iqaqewgi6e" class="n-3 c-news"> <div id="iqaqewgi6e" class="newsnr"> <h1>淺談高壓斷路器回路電阻測試標(biāo)準(zhǔn)及電阻過大原因</h1> <p class="source"><span>日期：2023-08-22</span><span>瀏覽：2407次</span></p> <div> <p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><strong><span style="font-size: 16px;">淺談高壓斷路器回路電阻測試標(biāo)準(zhǔn)及電阻過大原因</span></strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;"> 高壓斷路器回路電阻測試標(biāo)準(zhǔn)及電阻過大原因，斷路器導(dǎo)電回路的電阻主要取決于斷路器的動(dòng)、靜觸頭間的接觸電阻。高壓斷路器導(dǎo)電回路的電阻主要取決于斷路器的動(dòng)、靜觸頭間的接觸電阻。接觸電阻的存在，增加了導(dǎo)體在通電時(shí)的損耗，使接觸處的溫度升高，其值的大小直接影響正常工作時(shí)的載流能力，在一定程度上影響短路電流的切斷能力。因此，斷路器每相導(dǎo)電回路電阻值是斷路器安裝、檢修、質(zhì)量驗(yàn)收的一項(xiàng)重要數(shù)據(jù)。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;">??根據(jù)電力電氣設(shè)備預(yù)防性試驗(yàn)新規(guī)程的要求，各種開關(guān)設(shè)備的導(dǎo)電回路電阻測試，其測試電流不得小于100A。交接時(shí)和大修后導(dǎo)電回路電阻值應(yīng)符合制造廠的規(guī)定，運(yùn)行中敞開式斷路器的回路電阻不大天交接試驗(yàn)值的1.2倍，GIS 中的斷路器應(yīng)符合制造廠的規(guī)定。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;">??回路電阻值是表征導(dǎo)電回路的聯(lián)接是否良好的一個(gè)參數(shù)，各類型產(chǎn)品都規(guī)定了一定范圍內(nèi)的值。若回路電阻超過規(guī)定值時(shí)，很可能是導(dǎo)電回路某一連接處接觸不良。在大電流運(yùn)行時(shí)接觸不良處的局部溫升增高，嚴(yán)重時(shí)甚至引起惡性循環(huán)造成氧化燒損，對用于大電流運(yùn)行的斷路器尤需加倍注意。</span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 410.96px; height: 428px;" src="https://img53.chem17.com/9/20230822/638282861054164815548.jpg" title="728d6c402d0aa3b06a2afa910232a32(1).jpg" alt="728d6c402d0aa3b06a2afa910232a32(1).jpg" width="410" height="428"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;">??由于接觸面氧化、接觸緊固不良等原因?qū)е陆佑|電阻增大，在大電流流過時(shí)，接觸點(diǎn)溫度升高，這更加速接觸面氧化，使接觸電阻進(jìn)一步增大，持續(xù)下去將產(chǎn)生嚴(yán)重事故，因此有必要經(jīng)?；蚨ㄆ趯佑|電阻進(jìn)行測量。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;">??如果經(jīng)過回路電阻測試儀的檢測試驗(yàn)，斷路器的回路電阻過大，請重點(diǎn)檢查斷路器的以下部分，初步修復(fù)斷路器回路電阻過大。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;">??1、靜觸頭座與支座、中間觸頭與支座之間的連接螺絲是否上緊，彈簧是否壓平，檢查有無松動(dòng)或變色。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;">??2、動(dòng)觸頭、靜觸頭和中間觸頭的觸指有無缺損或燒毛，表面鍍層是否完好。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-size: 16px;">??3、各觸指的彈力是否均勻合適，觸指后面的彈簧有無脫落或退火、變色，對已損部件要更換掉。</span></p><p><br/></p> <div id="iqaqewgi6e" class="clear"></div> </div> <div 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