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class="nymiddlezty"> <div id="eqckvv83f" class="mianbao">您現(xiàn)在的位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 教你怎樣測試斷路器回路電阻？</div> <div id="eqckvv83f" class="about_con"> <h1 class="newstit">教你怎樣測試斷路器回路電阻？</h1> <div id="eqckvv83f" class="newstime"> <span id="eqckvv83f" class="skim"><em>瀏覽次數(shù)：</em>278</span><span id="eqckvv83f" class="skimtim"><em>發(fā)布日期：</em>2024-06-13 </span> </div> <p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;"><strong style="padding: 0px; margin: 0px;">教你怎樣測試斷路器回路電阻？</strong></span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;">斷路器回路電阻也叫接觸電阻，斷路器在長期運(yùn)行中，可能因為觸頭表面氧化，動、靜觸頭接觸壓力下降，開斷較大短路電流時觸頭燒壞等原因?qū)е陆佑|電阻過大，從而影響斷路器的導(dǎo)電性能。因此需要測試斷路器回路電阻來判斷其導(dǎo)電性能的好壞，且規(guī)程規(guī)定必須使用100A以上電流進(jìn)行測試。</span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;"> 　　下面以KDHL-100A回路電阻測試儀為例講解斷路器回路電阻測試的步驟和注意事項。<br data-filtered="filtered" style="padding: 0px; margin: 0px;"/></span><img src="https://www.chem17.com/UserManage/ueditor/themes/default/images/spacer.gif" word_img="file:///C:\Users\Administrator\Documents\Tencent Files\1070731952\nt_qq\nt_data\Pic\2024-06\Ori\494d093191d40070373d7ff18ebdd562.jpeg" style="padding: 0px; margin: 0px; border: 0px; list-style-type: none; vertical-align: middle; max-width: 100%;"/><br data-filtered="filtered" style="padding: 0px; margin: 0px;"/><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;"> </span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap; text-align: center;"><img src="https://img42.afzhan.com/9/20240613/638538703680568041886.png" title="a7656e2e-fa8b-45f1-a51c-2c7f1860219d.png" alt="a7656e2e-fa8b-45f1-a51c-2c7f1860219d.png" style="padding: 0px; margin: 0px; border: 0px; list-style-type: none; vertical-align: middle; max-width: 100%;"/></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="font-family: 宋體, SimSun; font-size: 16px;"> 目前，接觸電阻的測量電力系統(tǒng)中普遍采用常規(guī)的QJ44型雙臂直流電橋，而這類電橋的測試電流僅毫安級，難以發(fā)現(xiàn)回路導(dǎo)體截面積減少的缺陷，在測量高壓開關(guān)導(dǎo)電回路接觸電阻時，由于受觸頭之間油膜和氧化層的影響，測量值偏大若干倍，無法真實的反映接觸電阻值。</span><br/></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;"> 為此，電力部標(biāo)準(zhǔn)SD301—88《交流500KV電力設(shè)備交接和預(yù)防性試驗規(guī)程》和新版《電力設(shè)備預(yù)防性試驗規(guī)程》作出對斷路器、隔離開關(guān)接觸電阻的測量電流不小于直流100A的規(guī)定，以確保試驗結(jié)果準(zhǔn)確?！　?/span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;">一、回路電阻測試儀試驗步驟<br data-filtered="filtered" style="padding: 0px; margin: 0px;"/>　　(1)將斷路器手車推出，手動將斷路器合閘，使用測試線將儀器U+、I+端子連接到斷路器A相上端，U-、I-端子連接到斷路器A相下端?！　?/span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;"> (2)打開儀器電源開關(guān)，選擇合適的測試電流(100A或200A)，按確認(rèn)鍵開始測試，</span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;">2秒即可測出回路電阻值，按返回鍵停止測試?！　?/span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;">(3)按同樣的步驟測量其他兩相的回路電阻?！　?/span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;">二、回路電阻測試儀注意事項<br data-filtered="filtered" style="padding: 0px; margin: 0px;"/>　　(1)斷路器回路電阻一般在幾十微歐到幾百微歐不等，不高于產(chǎn)品技術(shù)要求值即可?！　?/span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;">(2)測試線與被測點要接觸良好，且電壓測試線夾子應(yīng)在電流測試線夾子內(nèi)側(cè)。　　</span></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 10px; line-height: 30px; color: rgb(51, 51, 51); font-family: 微軟雅黑; text-wrap: wrap;"><span style="padding: 0px; margin: 0px; font-size: 16px; line-height: 20px; font-family: 宋體, SimSun;">(3)對于無法搖出的固定式斷路器，也可以測試開關(guān)柜的導(dǎo)電回路電阻，即母排到出線(或進(jìn)線)這一段的電阻。</span></p> <div class="eqckvv83f" id="news_sx"><li id="eqckvv83f" class="sx_left">上一篇：<a href="/Article-541392.html">斷路器回路電阻試驗</a> <br />下一篇：<a href="/Article-540122.html">繼電保護(hù)測試導(dǎo)線包配置</a></li></div> </div> </div> </div> </div> <script type="text/javascript"> $(document).ready(function(e) { 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