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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> > 繼電保護(hù)測試儀交流試驗(yàn)測試時(shí)應(yīng)注意事項(xiàng)</span></div>  <div id="iqaqewgi6e" class="n-3 c-news"> <div id="iqaqewgi6e" class="newsnr"> <h1>繼電保護(hù)測試儀交流試驗(yàn)測試時(shí)應(yīng)注意事項(xiàng)</h1> <p class="source"><span>日期：2020-11-11</span><span>瀏覽：1294次</span></p> <div> <p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;">交流試驗(yàn)是繼電保護(hù)測試儀（也稱為<span style="border:0px; font:inherit; margin:0px; padding:0px"><span style="border:0px; font:inherit; margin:0px; padding:0px">繼電保護(hù)裝置試驗(yàn)儀</span></span>）的常用測試項(xiàng)目，但在使用過程中有許多注意事項(xiàng)，如果使用不當(dāng)，很難達(dá)到儀器的測試精度，本文簡要介紹繼電保護(hù)測試儀交流試驗(yàn)的注意事項(xiàng)。</p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"> </p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;">在測試常規(guī)繼電器時(shí)，“開關(guān)移位確認(rèn)時(shí)間”應(yīng)設(shè)置得稍大一些，如20ms左右，如果測試的返回值錯(cuò)誤太大，可能是因?yàn)槔^電器觸點(diǎn)晃動太大.那么可以選擇“手動”模式來完成，測試?yán)^電器動作時(shí)間時(shí)，繼電保護(hù)測試儀的交流輸出應(yīng)大于保護(hù)的起始值，以保證保護(hù)可靠動作。</p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"> </p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-align: center;"><img alt="" src="http://img76.chem17.com/9/20201111/637406800215766422680.jpg" style="height:544px; width:800px" /></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"> </p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;">多級過流保護(hù)試驗(yàn)時(shí)，一般是逐個(gè)進(jìn)行試驗(yàn)，即在設(shè)定<span style="color:#000000"><span id="iqaqewgi6e" class="bjFfcClass">第*</span>段</span>的值時(shí)，將第二段和第三段抽出，然后逐漸增大電流，直至保護(hù)動作，這樣，測量的動作時(shí)間往往不準(zhǔn)確。測量動作時(shí)間時(shí)，由<span style="border:0px; font:inherit; margin:0px; padding:0px"><span style="border:0px; font:inherit; margin:0px; padding:0px">繼電保護(hù)測試儀</span></span>直接輸出設(shè)定動作值的1.2倍或以上（低壓保護(hù)為0.8倍或以下），以保證保護(hù)能啟動動作，使測量的動作時(shí)間更加準(zhǔn)確。</p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"> </p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;">測試距離保護(hù)時(shí)，短路阻抗小于設(shè)定值保護(hù)出口，所以我們通常取設(shè)定值的0.95倍來做測試，可保證保護(hù)能夠可靠出口。在模擬接地距離故障的時(shí)候，零序補(bǔ)償系數(shù)一定要設(shè)置正確。</p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"> </p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;">在檢查零序電流值時(shí)，應(yīng)區(qū)分值表中給出的值是3I0還是I0，如果是I0的值，則顯示在測試模塊左下角，如果是3I0的值，則顯示在左下角的I0的值乘以3，看是否與該值相同。</p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"> </p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;">測試低周波保護(hù)時(shí)，頻率是可變的，頻率變化的步長是根據(jù)精度要求設(shè)定的，<span style="color:#000000"><span id="iqaqewgi6e" class="bjFfcClass">*好</span></span>的方法是選擇“自動”模式來完成測試，由于低周有DF/dt閉鎖值，采用手動方式不易控制，頻率從50下降到保護(hù)動作，應(yīng)注意，間隔時(shí)間應(yīng)大于保護(hù)動作時(shí)間。</p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-2446884.html">想知道防電弧服的使用方法么？看看這些吧</a></p> <p>下一篇：<a href="/Article-2441449.html">繼電保護(hù)測試儀試驗(yàn)操作方法有哪些？</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 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