直流高壓發(fā)生器泄漏及直流耐壓試驗(yàn)操作-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-2845362.html", "title": "直流高壓發(fā)生器泄漏及直流耐壓試驗(yàn)操作", "pubDate": "2021-11-18T13:43:49", "upDate": "2021-11-18T13:43:49" }</script> <script language="javaScript" src="/js/JSChat.js"></script><script language="javaScript">function ChatBoxClickGXH() { DoChatBoxClickGXH('https://chat.chem17.com',83189) }</script><script>!window.jQuery && document.write('<script 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margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);"><strong>直流高壓發(fā)生器對試品進(jìn)行泄漏及直流耐壓試驗(yàn)</strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??在做負(fù)載試驗(yàn)前，將高壓屏蔽微安表安裝到高壓倍壓簡上的高壓輸出端上，并將配套的專用屏蔽線分別接到微安表上和被試品上(詳細(xì)請見高壓屏蔽微安表使用說明書)。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??檢查直流高壓發(fā)生器、放電棒、倍壓簡、試品聯(lián)接線、接地線是否正確，接地線聯(lián)接是否可靠，檢查高壓安全距離是否符合要求，方可開始進(jìn)行試品的高壓試驗(yàn)。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??檢查確認(rèn)直流高壓發(fā)生器等無異常情況后，接通單相交流220V電源開關(guān)，此時(shí)綠燈亮，表示電源接通。可開始進(jìn)行試品的直流泄漏和直流耐壓試驗(yàn)。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255); text-align: center;"></p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img78.chem17.com/9/20211118/637728398068626582834.png" title="SBTLV9_@@NU_B3U[B_}N_BF.png" alt="SBTLV9_@@NU_B3U[B_}N_BF.png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255); text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??按紅色按鈕，則紅燈亮，表示高壓接通，待升高壓。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??順時(shí)針方向平緩調(diào)節(jié)調(diào)壓電位器粗調(diào)和細(xì)調(diào)，輸出端即從零開始升壓。升壓速度以每秒3—5kV上升試驗(yàn)電壓為宜。對于大電容試品升壓時(shí)更要緩慢升壓，否則可能導(dǎo)致電壓過沖，還需監(jiān)視電流表充電電流不超過直流發(fā)生器的最大充電電流。當(dāng)升到所需的電壓或電流后，按規(guī)定時(shí)間記錄電流表及電壓表的讀數(shù)。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??試驗(yàn)完畢后，降壓，將調(diào)壓電位器粗調(diào)和細(xì)調(diào)回零后，隨后按綠色按鈕，切斷高壓并關(guān)閉電源開關(guān)。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??試驗(yàn)完畢后，應(yīng)用放電棒對試品進(jìn)行多次放電，放電后方可靠近試品和拆線工作(放電請?jiān)敿?xì)見放電棒使用說明書)。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??對小電容試品如氧化鋅避雷器、磁吹避雷器等先用粗調(diào)升到所需電壓(電流)的90%，再用細(xì)調(diào)電位器緩緩升壓到所需的電壓(電流)值，然后從數(shù)顯表上讀出電壓(電流)數(shù)值。如需對氧化鋅避雷器進(jìn)行75%VDC—1mA的測量時(shí)，應(yīng)先升到電流到1mA時(shí)電壓值停止(這時(shí)可記錄電壓、電流值)，然后按下黃色按鈕，電壓即降到原來的75%，并保持此狀態(tài)。此時(shí)可讀取微安表數(shù)值及電壓值。測量完畢后，調(diào)壓電位器逆時(shí)針回到零位，按下綠色按鈕，需再次升壓時(shí)按紅色按鈕即可。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; background-color: rgb(255, 255, 255);">??對大電容試品時(shí)，升壓應(yīng)更要緩慢，并需要監(jiān)視電流表充電電流不超過發(fā)生器的最大充電電流，一定要放慢升壓速度，避免充電電流過大。試驗(yàn)完畢后，將電壓調(diào)節(jié)電位器逆時(shí)針回到零位上，隨后按綠色按鈕，切斷高壓。此時(shí)注意電壓表上的電壓降到15kV左右，方可用放電棒進(jìn)行多次放電，確保安全。</p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-2845377.html">工頻耐壓試驗(yàn)?zāi)蛪簳r(shí)間和升壓速度次數(shù)規(guī)定</a></p> <p>下一篇：<a href="/Article-2845333.html">無線高壓核相儀技術(shù)參數(shù)</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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