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</li> <li id="86i4nahi9" class="yj"><a href="/ParentList-1935168.html" class="yja" onmouseover="showsubmenu('高壓無線核相儀')">高壓無線核相儀</a> <div class="86i4nahi9" id="submenu_高壓無線核相儀" style="display:none"> <ul> </ul> </div> </li> <li id="86i4nahi9" class="yj"><a href="/ParentList-1935169.html" class="yja" onmouseover="showsubmenu('高壓核相儀')">高壓核相儀</a> <div class="86i4nahi9" id="submenu_高壓核相儀" style="display:none"> <ul> </ul> </div> </li> </ul> </div> </div></div> <div id="86i4nahi9" class="inpage_right"> <div id="86i4nahi9" class="mbx2"><a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 異頻介質(zhì)損耗測試儀工作原理</div> <div id="86i4nahi9" class="inpage_content"> <div id="86i4nahi9" class="nr_main_box"> <h1 class="inside_rnewtil">異頻介質(zhì)損耗測試儀工作原理</h1> <div id="86i4nahi9" class="inside_rnewtime">點(diǎn)擊次數(shù)：484 更新時間：2023-06-05</div> <div id="86i4nahi9" class="inside_rnewcon"><p><strong><span style="font-family: 微軟雅黑; font-size: 15px;">異頻介質(zhì)損耗測試儀工作原理</span></strong></p><p><span style="font-family: 微軟雅黑; font-size: 15px;"><span style="font-family: 微軟雅黑; font-size: 15px;">異</span>頻介質(zhì)損耗測試儀是發(fā)電廠、變電站等現(xiàn)場或?qū)嶒?yàn)室測試各種高壓電力設(shè)備介損正切值及電容量的高精度測試儀器。儀器為一體化結(jié)構(gòu)，內(nèi)置介損測試電橋，可變頻調(diào)壓電源，升壓變壓器和SF6 高穩(wěn)定度標(biāo)準(zhǔn)電容器。測試高壓源由儀器內(nèi)部的逆變器產(chǎn)生，經(jīng)變壓器升壓后用于被試品測試。頻率可變?yōu)?0Hz、47.5Hz\52.5Hz、45Hz\55Hz、60Hz、57.5Hz\62.5Hz、55Hz\65Hz，采用數(shù)字陷波技術(shù)，避開了工頻電場對測試的干擾，從根本上解決了強(qiáng)電場干擾下準(zhǔn)確測量的難題。同時適用于全部停電后用發(fā)電機(jī)供電檢測的場合。該儀器配以絕緣油杯加溫控裝置可測試絕緣油介質(zhì)損耗。 </span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><strong><span style="font-family: 微軟雅黑; font-size: 15px;">異頻介質(zhì)損耗測試儀工作原理</span></strong><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">在交流電壓作用下，電介質(zhì)要消耗部分電能，這部分電能將轉(zhuǎn)變?yōu)闊崮墚a(chǎn)生損耗。這種能量損耗叫做電介質(zhì)的損耗。當(dāng)電介質(zhì)上施加交流電壓時，電介質(zhì)中的電壓和電流間成在相角差ψ，ψ的余角δ稱為介質(zhì)損耗角，δ的正切tgδ稱為介質(zhì)損耗角正切。tgδ值是用來衡量電介質(zhì)損耗的參數(shù)。儀器測量線路包括一標(biāo)準(zhǔn)回路（Cn）和一被試回路(Cx)，如圖2—1所示。標(biāo)準(zhǔn)回路由內(nèi)置高穩(wěn)定度標(biāo)準(zhǔn)電容器與測量線路組成，被試回路由被試品和測量線路組成。測量線路由取樣電阻與前置放大器和A/D轉(zhuǎn)換器組成。通過測量電路分別測得標(biāo)準(zhǔn)回路電流與被試回路電流幅值及其相位差，再由數(shù)字信號處理器運(yùn)用數(shù)字化實(shí)時采集方法，通過矢量運(yùn)算得出試品的電容值和介質(zhì)損耗正切值。儀器內(nèi)部已經(jīng)采用了抗干擾措施，保證在外電場干擾下準(zhǔn)確測量。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><img src="https://img68.chem17.com/9/20230605/638215496906536968784.jpg" alt="異頻介質(zhì)損耗測試儀廠家工作原理" width="500" height="216" title="異頻介質(zhì)損耗測試儀廠家工作原理" align="" style="margin: 0px auto; padding: 0px; border: none; outline: 0px; font-size: 15px; vertical-align: baseline; font-family: 微軟雅黑; white-space: normal;"/><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">圖 2—1 測量原理圖</span></p><p><span style="font-family: 微軟雅黑; font-size: 15px;">異頻介質(zhì)損耗測試儀是發(fā)電廠、變電站等現(xiàn)場或?qū)嶒?yàn)室測試各種高壓電力設(shè)備介損正切值及電容量的高精度測試儀器。儀器為一體化結(jié)構(gòu)，內(nèi)置介損測試電橋，可變頻調(diào)壓電源，升壓變壓器和SF6 高穩(wěn)定度標(biāo)準(zhǔn)電容器。適用于全部停電后用發(fā)電機(jī)供電檢測的場合。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><img src="https://img62.chem17.com/9/20230605/638215497841880049854.jpg" alt="異頻介質(zhì)損耗測試儀廠家" width="557" height="330" title="異頻介質(zhì)損耗測試儀廠家" align="" style="margin: 0px auto; padding: 0px; border: none; outline: 0px; font-size: 15px; vertical-align: baseline; font-family: 微軟雅黑; white-space: normal;"/><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">異頻介質(zhì)損耗測試儀廠家性能特點(diǎn)</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?超大液晶中文顯示</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">操作簡單，儀器配備了的全觸摸液晶顯示屏，超大全觸摸操作界面，每過程都非常清晰明了，操作人員不需要額外的專業(yè)培訓(xùn)就能使用。輕輕點(diǎn)擊一下就能完成整個過程的測量，是目前非常理想的智能型介損測量設(shè)備。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?海量存儲數(shù)據(jù)</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="margin: 0px; padding: 0px; border: none; outline: 0px; font-size: 15px; vertical-align: baseline; font-family: 微軟雅黑;">異頻介質(zhì)損耗測試儀</span><span style="font-family: 微軟雅黑; font-size: 15px;">內(nèi)部配備有日歷芯片和大容量存儲器，保存數(shù)據(jù)200組，能將檢測結(jié)果按時間順序保存，隨時可以查看歷史記錄，并可以打印輸出。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?科學(xué)*的數(shù)據(jù)管理</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="margin: 0px; padding: 0px; border: none; outline: 0px; font-size: 15px; vertical-align: baseline; font-family: 微軟雅黑;">異頻介質(zhì)損耗測試儀</span><span style="font-family: 微軟雅黑; font-size: 15px;">數(shù)據(jù)可以通過U盤導(dǎo)出，可在任意一臺PC機(jī)上通過我公司專用軟件，查看和管理數(shù)據(jù)。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?多種測試模式</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="margin: 0px; padding: 0px; border: none; outline: 0px; font-size: 15px; vertical-align: baseline; font-family: 微軟雅黑;">異頻介質(zhì)損耗測試儀</span><span style="font-family: 微軟雅黑; font-size: 15px;">使用內(nèi)高壓、內(nèi)標(biāo)準(zhǔn)的方式測試，正接法、反接法、自激法。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?CVT測試一步到位</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">該儀器還可以測試全密封的CVT（電容式電壓互感器）C1、C2的介損和電容量。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?不拆高壓引線測量CVT</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">儀器可在不拆除CVT高壓引線的情況下正確測量CVT的介質(zhì)損耗值和電容值。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?CVT反接屏蔽法測量C0</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">儀器可采用反接屏蔽法測量CVT上端C0的介質(zhì)損耗值和電容值。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?高速采樣信號</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">儀器內(nèi)部的逆變器和采樣電路全部由數(shù)字化控制，輸出電壓連續(xù)可調(diào)。</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">?多重保護(hù)安全可靠</span><br style="font-family: 微軟雅黑; font-size: 15px; white-space: normal;"/><span style="font-family: 微軟雅黑; font-size: 15px;">儀器具備輸入電壓波動、高壓電流、輸出短路、電源故障、過壓、過流、溫度等多重保護(hù)措施，保證了儀器安全、可靠。儀器還具備設(shè)置接地檢測功能，確保不接地設(shè)備不允許升壓。</span></p></div> <div id="86i4nahi9" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-3379272.html">全自動絕緣油介電強(qiáng)度測試儀講解</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-3375177.html">電壓互感器交流耐壓試驗(yàn)方法及注意事項(xiàng)</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="86i4nahi9" id="z_Footer"> <div id="86i4nahi9" class="pz_down"> <div id="86i4nahi9" class="w_1200"> <div id="86i4nahi9" class="footT"> <div id="86i4nahi9" class="footAddr"> <div id="86i4nahi9" class="footTit">上?？档请姎饪萍加邢薰?/div> <div id="86i4nahi9" class="dAddr"><img class="ico" 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