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name="" type="submit" class="search-btn" value=""> </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> > 什么是直流電阻測試儀</span></div>  <div id="iqaqewgi6e" class="n-3 c-news"> <div id="iqaqewgi6e" class="newsnr"> <h1>什么是直流電阻測試儀</h1> <p class="source"><span>日期：2020-10-30</span><span>瀏覽：1118次</span></p> <div> <p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px"> 變壓器繞組的<strong>直流電阻測試儀</strong>是變壓器在交接、大修和改變分接開關(guān)后，*的試驗項目。通過測量變壓器繞組的直流電阻，可以檢查出引線的焊接或連接質(zhì)量，繞組有無匝間短路或開路，以及分接開關(guān)的接觸是否良好等情況。</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px">在以前對直阻的測量均采用QJ44雙臂電橋來測量，而這類電橋的測量電流為毫安級，測量起來時間需要很長，而且精度也較低。為了改變這種狀況，縮短測量時間以及減輕測試人員的工作負擔(dān)。</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px"> 變壓器直流電阻測量是變壓器制造中半成品、成品出廠試驗、安裝、交接試驗及電力部門預(yù)防性試驗的必測項目，能有效發(fā)現(xiàn)變壓器線圈的選材、焊接、連接部位松動、缺股、斷線等制造缺陷和運行后存在的隱患。<span style="color:rgb(0, 0, 255)">直流電阻測試儀</span>測量變壓器繞組的直流電阻是一個很重要的試驗項目，在《電力設(shè)備試驗規(guī)程》中，其次序排在變壓器試驗項目的第位。</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px"> 直流電阻測試儀是新一代變壓器直流電阻的測試儀器，它能根據(jù)不同型號的電力變壓器自動選擇測試電流<span style="color:#000000">，以<span id="iqaqewgi6e" class="bjFfcClass">*快</span>的速度顯示測試結(jié)果。直流電阻測試儀并且具有充電、放電指示等功能，液晶顯示器的采用使得該儀器人機界面良好，是直流電阻測試工作中的<span id="iqaqewgi6e" class="bjFfcClass">*選</span></span>設(shè)備。</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px">直流電阻測試儀的特點：</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px">1、測量范圍廣：電阻測量范圍為1Ω一2ΩK，量程廣。</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px">2、測試速度快：本儀器大輸出充電電流可達3A，測量時能有效地補償大電感設(shè)備電流慣性，加速了鐵芯飽和，從而縮短了充電時間，提高了測試速度，比傳統(tǒng)儀器單、雙臂電橋快幾百倍．</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px">3、交直流兩用：本儀器內(nèi)附可充電電池組，交直流供電，便攜式設(shè)計．使用、攜帶方便。</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px">4、準確度高：本儀器除了采用*的四端子測量法外，而且還采用*的恒流電源技術(shù)，使得對感性負載充電電流保持在一個相對的穩(wěn)定值，抗感能力穩(wěn)定，抗干擾能力強，進而保證了測量準確度。并且采用國外進口優(yōu)質(zhì)元器件，測量結(jié)果準確度高，重復(fù)性好。</span></p><p style="color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif, ????; font-size: 12px;"><span style="font-size:16px"><img alt="" src="http://img72.chem17.com/9/20201030/637396485841313122290.jpg" style="height:800px; width:600px" /></span></p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-2434197.html">變壓器直流電阻測試儀功能特點</a></p> <p>下一篇：<a href="/Article-2426887.html">直流電阻測試儀原理</a></p> </div> <div id="iqaqewgi6e" class="clear"></div> </div> </div> <div id="iqaqewgi6e" class="n-9"> <div id="iqaqewgi6e" class="c-right"> <div id="iqaqewgi6e" class="c-1 r-pro"> <div id="iqaqewgi6e" class="c-left"> <div id="iqaqewgi6e" class="h-2"><a href="/products.html">產(chǎn)品分類</a></div> <ul> <li><a href="/ParentList-1388067.html" onmouseover="showsubmenu('大電流發(fā)生器')" class="yj">大電流發(fā)生器</a> <div class="iqaqewgi6e" id="submenu_大電流發(fā)生器" style="display:none"> <ul> </ul> </div> </li> <li><a href="/ParentList-1384344.html" onmouseover="showsubmenu('LCR數(shù)字電橋')" 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