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id="yq00aqiue" class="newsnr"> <h1>ZGF-200kv/2MA直流高壓發(fā)生器操作步驟</h1> <p class="source"><span>日期：2020-05-06</span><span>瀏覽：1303次</span></p> <div> <p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><strong style="margin:0px"><span style="font-size:16px; margin:0px">ZGF-200kv/2MA直流高壓發(fā)生器</span><span style="font-size:12pt; margin:0px"><span style="font-family:漢儀中黑簡; margin:0px">操作步驟</span></span></strong></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">● 控制箱上的顯示燈、開關(guān)、旋鈕等已標(biāo)清楚，看此操作說明時請參照控制箱的面板上元器件名稱使用。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">●倍壓筒底盤側(cè)面有（四）五芯插座為聯(lián)接控制箱電纜之插座，底盤側(cè)面有銅接線柱為接地端子作連接地線用。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">●附帶的高壓屏蔽電流表為數(shù)顯微安表，表頂端上的插孔為連接被試品的線插孔，同時也作為電源開關(guān)，不用時請拔掉插頭，就自動關(guān)閉電源。換電池時請將后蓋旋下，換好后請將后蓋旋緊。</span></span></p><p style="margin: 0px 0px 0px 21pt; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.1 使用前準(zhǔn)備</span></span></p><p style="margin: 0px 0px 0px 21pt; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.1.1 試驗器在使用前應(yīng)檢查其完好性，聯(lián)接電纜不應(yīng)有斷路和短路，設(shè)備無破裂等損壞。</span></span></p><p style="margin: 0px 0px 0px 21pt; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.1.2 將倍壓筒從機(jī)箱中取出放置到合適的安全位置，分別聯(lián)接好電源線、電纜線和接</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">地線。保護(hù)接地線與工作接地線以及放電棒的接地線均單獨接到試品的地線上(即一點接地)。嚴(yán)禁各接地線相互串聯(lián)。為此，應(yīng)使用接地線。(見圖4)上。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><img alt="" src="http://img49.chem17.com/9/20180625/636655076238327258520.png" style="border:0px; height:228px; margin:0px; padding:0px; width:348px" /></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; text-align: center;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">圖4 試驗回路接地線示意圖</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.1.3 電源開關(guān)放在關(guān)斷位置并檢查調(diào)壓電位器應(yīng)在零位。過電壓保護(hù)整定撥盤開關(guān)設(shè)置在適當(dāng)位置上，一般為1.15 - 1.20倍測試電壓值。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.2 空載升壓試驗并驗證過電壓保護(hù)整定</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.2.1 接通電源開關(guān)，此時綠燈亮，表示電源接通。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.2.2 按紅色按鈕，則紅燈亮，表示高壓接通。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.2.3 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。升至所需電壓后，按規(guī)定時間記錄電流表讀數(shù)，并檢查控制箱及輸出電纜有無異?，F(xiàn)象及聲響。必要時用外接高壓分壓器校準(zhǔn)控制箱上的直流高壓指示。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.2.4 升電壓至過壓保護(hù)設(shè)定值，機(jī)內(nèi)保護(hù)電路應(yīng)動作，綠燈亮、紅燈滅。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.2.5 將調(diào)壓電位器回零，關(guān)閉電源開關(guān)。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.3 對試品進(jìn)行泄漏及直流耐壓試驗</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.3.1 在進(jìn)行5.1 </span></span><span style="font-size:12pt; margin:0px"><span style="font-family:times new roman; margin:0px">–</span></span><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px"> 5.2 檢查試驗確認(rèn)試驗無異常情況后即可開始進(jìn)行試品的泄漏及直流耐壓試驗。將試品、地線等聯(lián)接好，檢查無后即打開電源。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.3.2 依步驟5.2.1 </span></span><span style="font-size:12pt; margin:0px"><span style="font-family:times new roman; margin:0px">–</span></span><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px"> 5.2.3 升壓至所需電壓或電流。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">升壓速度以每秒3 - 5 kV試驗電壓為宜。對于大電容試品升壓時還需監(jiān)視電流表充電電流不超過試驗器的充電電流。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">對小電容試品如氧化鋅避雷器、磁吹避雷器等先升至所需電壓(電流)的95%，再緩慢仔細(xì)升至所需的電壓(電流)。然后從數(shù)顯表上讀出電壓(電流)值。如需對氧化鋅避雷器進(jìn)行0.75U</span></span><sub style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">DC-1</span></span></sub><sub style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:times new roman; margin:0px">mA</span></span></sub><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">測量時，先升至U</span></span><sub style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">DC-1</span></span></sub><sub style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:times new roman; margin:0px">mA</span></span></sub><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">電壓值，然后按下黃色按鈕，此時電壓即降至原來的75%，</span></span><strong style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">并在一分鐘內(nèi)保持此狀態(tài)</span></span></strong><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">。此時可讀取微安數(shù)。測量完畢后，調(diào)壓電位器逆時針回到零，按下綠色按鈕。需再次升壓時按紅色按鈕即可。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.3.3 試驗完畢，將調(diào)壓電位器逆時針回到零，按下綠色按鈕，關(guān)閉電源開關(guān)。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.4 幾種測量方法</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.4.1 一般測量時，當(dāng)接好線后，先把聯(lián)接試品的線懸空，升到試驗電壓后讀取空試時的電暈和雜散電流I</span></span><span style="font-size:12pt; margin:0px"><span style="font-family:times new roman; margin:0px">’</span></span><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">，然后接上試品升到試驗電壓讀取總電流I</span></span><sub style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">1</span></span></sub><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">試品泄漏電流：I</span></span><sub style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">0</span></span></sub><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px"> = I</span></span><sub style="margin:0px"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">1</span></span></sub> <span style="font-size:12pt; margin:0px"><span style="font-family:times new roman; margin:0px">–</span></span><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">I</span></span><span style="font-size:12pt; margin:0px"><span style="font-family:times new roman; margin:0px">’</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.4.2 當(dāng)需要精密測量被試品泄漏電流時，則應(yīng)在高壓側(cè)串入GL型高壓微安表(見圖5a)。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px"><img alt="" src="http://img48.chem17.com/9/20180625/636655077854986347387.png" style="border:0px; height:199px; margin:0px; padding:0px; width:312px" /></span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"> <span style="font-family:宋體; font-size:12pt; margin:0px; text-align:center">圖5 a 微安表接入試品Cχ高壓側(cè)接線圖</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">微安表必須有金屬屏蔽，應(yīng)采用屏蔽線與試品聯(lián)接。高壓引線的屏蔽引出應(yīng)與儀表端的屏蔽緊密聯(lián)接。如果要排除試品表面泄漏電流的影響可在試品高電位端用裸金屬軟線緊密繞幾圈后與高壓引線的屏蔽相聯(lián)接(見圖5b)</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px"> <img alt="" src="http://img47.chem17.com/9/20180625/636655078695374508200.png" style="border:0px; height:199px; margin:0px; padding:0px; width:312px" /> </span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px"> </span></span><span style="font-family:宋體; font-size:12pt; margin:0px; text-align:center">b 排除試品Cχ表面影響接線圖</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.4.3 對氧化鋅、磁吹避雷器等試品接地端可分開的情況下，也可采用在試品的底部(地電位側(cè))串入電流表進(jìn)行測量的方式。但也必須使用屏蔽線(見圖6a)。當(dāng)要排除試品表面泄漏電流的影響，可用軟的裸銅線在試品地電位端繞上幾圈并與屏蔽線的屏蔽相聯(lián)接(見圖6b)</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"> <img alt="" src="http://img48.chem17.com/9/20180625/636655079408932230376.png" style="border:0px; height:212px; margin:0px; padding:0px; width:553px" /></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-family:宋體; font-size:12pt; margin:0px">4.4.4 試驗完畢，將調(diào)壓電位器逆時針回到零，按下綠色按鈕，關(guān)閉電源開關(guān)。</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.4.5 對于氧化鋅避雷器等小電容試品一般通過倍壓筒內(nèi)部測壓電阻放電即可。而對電纜等大電容試品一般要待試品電壓自放電至試驗電壓的20%以下，再通過配套的放電棒進(jìn)行放電。待試品充分放電后并掛好接地線，才允許進(jìn)行高壓引線的拆除和更換接線工作。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.5 保護(hù)動作后的操作</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">在使用過程中發(fā)現(xiàn)紅燈滅，綠燈亮，直流高壓下降，即為有關(guān)保護(hù)動作。此時應(yīng)按下列步驟操作。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.5.1 關(guān)閉電源開關(guān)，面板指示燈均不亮</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.5.2 將調(diào)壓電位器退回零位。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:12pt; margin:0px"><span style="font-family:宋體; margin:0px">4.5.3 一分鐘后待機(jī)內(nèi)低壓電容器充分放電后才允許再次打開電源開關(guān)。重新進(jìn)行空載試驗并查明情況后可再次升壓試驗。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><img alt="" 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