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style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">1、在做負載試驗前，將高壓屏蔽微安表安裝到倍壓筒上的高壓輸出端上，并將配套的高壓線分別接到微安表上和被試品上。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">2、檢查儀器、放電棒、倍壓筒、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，方可開始進行試品的高壓試驗。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">3、直流高壓發(fā)生器檢查確認儀器等無異常情況后，接通單相交流220V電源開關(guān)，此時綠燈亮，表示電源接通。可開始進行試品的直流泄漏和直流耐壓試驗。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">4、按紅色按鈕，則紅燈亮，表示高壓接通，待升高壓。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">5、順時針方向平緩調(diào)節(jié)調(diào)壓電位器,輸出端即從零開始升壓。升壓速度以每秒3-5kV上升試驗電壓為宜。對于大電容試品升壓時則需要緩慢升壓，否則可能導致電壓過沖,還需監(jiān)視電流表</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">充電電流不超過直流發(fā)生器的大充電電流。當升到所需的電壓或電流后，按規(guī)定時間記錄電流表及電壓表的讀數(shù)。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">6、試驗完畢后，降壓，將調(diào)壓電位器回零后，隨后按綠色按鈕，切斷高壓并關(guān)閉電源開關(guān)。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">7、試驗完畢后，應(yīng)用放電棒對試品進行多次放電，放電后方可靠近試品和拆線工作。對小電容試品如氧化鋅避雷器、磁吹避雷器等緩緩調(diào)節(jié)調(diào)壓電位器升壓到所需的電壓(電流)值，然后</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">從數(shù)顯表上讀出電壓(電流)數(shù)值。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p><span style="font-family: 宋體; font-size: 16px;">如需對氧化鋅避雷器進行75%VDC-1mA的測量時，應(yīng)先升到電流到1000uA時電壓值停止(這時可記錄電壓、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)。此時可讀取微</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">安表數(shù)值及電壓值。測量完畢后,調(diào)壓電位器逆時針回到零位,按下綠色按鈕,需再次升壓時按紅色按鈕即可。對大電容試品時，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</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">的MAX充電電流，一定要放慢升壓速度,避免充電電流過大。試驗完畢后，將電壓調(diào)節(jié)電位器逆時針回到零位上，隨后按綠色按鈕，切斷高壓，此時先不要關(guān)閉電源，電壓表顯示還有電壓</span></p><p><span style="font-family: 宋體; font-size: 16px;">值，此為存電電壓，等電壓降到2000V左右,方可用放電棒進行多次放電，確保安全。<br/></span></p><p><span style="font-family: 宋體; font-size: 16px;"> </span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 438px; height: 328px;" src="https://img45.chem17.com/9/20241215/638698523651769520502.jpg" title="2abbf4875ce5319eb252d95ca057d79.jpg" alt="2abbf4875ce5319eb252d95ca057d79.jpg" width="438" height="328"/></p><p><span style="font-family: 宋體; font-size: 16px;"></span><br/></p><p><strong><span style="font-family: 宋體; font-size: 16px;">直流高壓發(fā)生器試驗原理</span></strong></p><p style="margin-top:24px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;line-height:30px"><span style="color: rgb(57, 57, 57); letter-spacing: 0px; background: rgb(255, 255, 255); font-family: 宋體, SimSun; font-size: 16px;">直流高壓發(fā)生器采用一體式設(shè)計，選用最新器件，實現(xiàn)體積小、功率大、重量輕、操作方便、安全可靠、電源輸出質(zhì)量高等優(yōu)點，是高壓測試行業(yè)的理想測試儀器。常用于電力、鐵路、化工、工礦、冶金、鋼鐵等部門對氧化鋅避雷器、磁吹避雷器、電力電纜、變壓器、發(fā)電機等設(shè)備進行直流耐壓試驗和泄漏試驗，亦可作靜電吸塵、噴涂等電源。</span></p><p style="margin-top: 22px;margin-left: 0;text-indent: 0;background: rgb(255, 255, 255)"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img45.chem17.com/9/20241215/638698522640664957896.png" title="4c33cdfb-8bf5-4cc2-b528-0862a62e0712.png" alt="4c33cdfb-8bf5-4cc2-b528-0862a62e0712.png"/></p><p style="margin-top:28px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;line-height:30px"><span style="color: rgb(57, 57, 57); letter-spacing: 0px; background: rgb(255, 255, 255); font-family: 宋體, SimSun; font-size: 16px;"><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">高頻變壓器的輸入端接受中高頻電壓信號，通過倍壓整流電路（整流硅堆</span>D<span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">以及電容器</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">C</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">），達到直流高壓的輸出，</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">R1</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">為電流測量采樣電阻，流過</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">R1</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">的電流即流過負載</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">RL</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">的電流，</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">R2</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">、</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">R3</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">，為高壓測量電阻，兩者共同構(gòu)成分壓電路（</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">R3</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">為高壓臂</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">,R2</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">為低壓臂），直流高壓發(fā)生器（又稱直流發(fā)生器）裝配結(jié)構(gòu)是</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">:R1,R2</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">置于直流高壓發(fā)生器控制箱，</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: Arial;">R3</span><span style="color: rgb(57, 57, 57); letter-spacing: 0px; font-size: 18px; background: rgb(255, 255, 255); font-family: 宋體;">與中高頻變壓器、倍壓整流電路等置于倍壓筒，控制箱輸出的中高頻電壓信號通過專用電纜與倍壓筒相連。</span></span></p><p><span style=";font-family:宋體;font-size:16px"> </span></p><p><br/></p> <div id="ubjn47ipz" class="clear"></div> </div> <div id="ubjn47ipz" class="article"> <p>上一篇：<a href="/Article-3893928.html">變壓器直流電阻測試儀在試驗操作時需要注意的細節(jié)</a></p> <p>下一篇：<a href="/Article-3893926.html">工頻耐壓試驗安全應(yīng)當注意的幾個方面</a></p> </div> <div id="ubjn47ipz" class="clear"></div> </div> </div> <div id="ubjn47ipz" class="n-9"> <div id="ubjn47ipz" class="c-right"> <div id="ubjn47ipz" class="c-1 r-pro"> <div id="ubjn47ipz" class="c-left"> <div id="ubjn47ipz" class="h-2"><a 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其它產(chǎn)品類</a></li> </ul> </div> </li> <li><a href="/ParentList-1327095.html" onmouseover="showsubmenu('相位伏安表')" class="yj">相位伏安表</a> <div class="ubjn47ipz" id="submenu_相位伏安表" style="display:none"> <ul> <li><a href="/SonList-1327110.html">> 相位伏安表</a></li> <li><a href="/SonList-1327109.html">> 電參數(shù)測試</a></li> <li><a href="/SonList-1327108.html">> 用電檢查儀</a></li> <li><a href="/SonList-1327107.html">> 現(xiàn)場校驗儀</a></li> <li><a href="/SonList-1327106.html">> 終端測試儀</a></li> <li><a href="/SonList-1327104.html">> 標準電能表</a></li> <li><a href="/SonList-1327103.html">> 便攜式裝置</a></li> <li><a href="/SonList-1327102.html">> 電能表裝置</a></li> <li><a href="/SonList-1327101.html">> 數(shù)字表裝置</a></li> <li><a href="/SonList-1327100.html">> 互感器裝置</a></li> <li><a href="/SonList-1327099.html">> 電測量器材</a></li> <li><a href="/SonList-1327097.html">> 附件和配件</a></li> <li><a href="/SonList-1327096.html">> 研發(fā)訂制產(chǎn)品</a></li> </ul> </div> </li> <li><a href="/ParentList-1354476.html" 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<li><a href="/SonList-1416980.html">> ET紅外線測溫儀</a></li> <li><a href="/SonList-1416968.html">> SM紅外線測溫儀</a></li> <li><a href="/SonList-1341762.html">> OT-8898紅外線測溫儀</a></li> <li><a href="/SonList-1324120.html">> 噪聲儀</a></li> <li><a href="/SonList-1324119.html">> 測厚儀</a></li> <li><a href="/SonList-1324118.html">> 軸承故障測試儀</a></li> <li><a href="/SonList-1324117.html">> 測振儀</a></li> <li><a href="/SonList-1324116.html">> 轉(zhuǎn)速表</a></li> <li><a href="/SonList-1324115.html">> 測溫儀</a></li> </ul> </div> </li> <li><a href="/ParentList-1349465.html" onmouseover="showsubmenu('避雷器及絕緣子測試儀器')" class="yj">避雷器及絕緣子測試儀器</a> <div class="ubjn47ipz" id="submenu_避雷器及絕緣子測試儀器" style="display:none"> <ul> <li><a href="/SonList-1349472.html">> 無線絕緣子測試儀</a></li> <li><a href="/SonList-1349471.html">> 避雷器放電計數(shù)器校驗儀</a></li> <li><a href="/SonList-1349470.html">> 氧化鋅避雷器在線測試儀</a></li> <li><a href="/SonList-1349469.html">> 絕緣子串電壓分布測量表</a></li> <li><a href="/SonList-1349468.html">> 絕緣子絕緣電阻測試儀</a></li> <li><a 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