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class="proBig"><div id="xh22dah" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368129267578/9378652.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="queards" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368129267578/9378652.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="x3sjlsz" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>變壓器絕緣等級,變壓器</p><p><span>***更新：</span>2020-12-11 04:08:54</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="mg8woqx" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市展榮新精密電子有限公司</a></p><p><span>聯(lián)系人：</span>喻孟峨</p><p><span>郵箱: </span>113527410@qq.com</p><p><span>電話: </span>15012892536</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0755-27923475</p><p><span>地址: </span>航城街道黃田社區(qū)崗貝工業(yè)區(qū)綜合樓10棟401</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8nz2pb2" class="page-proshow02"><p class="title">詳細說明</p><div id="tm48roq" class="box"><p><p style="text-indent:25px">三相變壓器應(yīng)使用三相電源進行試驗，沒有三相電源也可使用單相電源；使用單相電源時，D聯(lián)結(jié)的繞組單相電源應(yīng)施加在三角形的兩個角上；試驗期間該單相電源應(yīng)相當于三相試驗的線電壓，變壓器絕緣等級。Y聯(lián)結(jié)的繞組單相電源應(yīng)施加于一個線端與另外兩個連在一起的線端上；試驗期間單相電壓應(yīng)等于三相試驗時線電壓的√3/2倍。分級絕緣變壓器需考慮其中性點絕緣是否能夠滿足單相電源的試驗要求；Y聯(lián)結(jié)的變壓器，如電源容量不足且有中性點可以利用時，經(jīng)制造單位與用戶協(xié)商，可在線端與中性點間使用單相電源進行試驗。首先施加小于70%試驗電流進行調(diào)試；當合閘相角、試驗電流的峰值和對稱值及持續(xù)時間均達到要求時，變壓器絕緣等級，再進行100，變壓器絕緣等級.0%試驗電流的正式試驗；小于70%試驗電流不記人試驗次數(shù)。變壓器檢測儀一般有很多種用來檢測變壓器的不同指標。變壓器絕緣等級</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="變壓器絕緣等級,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368129267578/9378652.png"></div><p style="text-indent:25px">電壓比測量所使用的儀器的精度和靈敏度均不應(yīng)低于0.2%；電壓比測量中計算的比值應(yīng)按各分接的銘牌電壓計算，當電壓百分數(shù)或?qū)?yīng)匝數(shù)與銘牌電壓無差異時，可按電壓頁分數(shù)或匝數(shù)計算的比值。測量應(yīng)分別在各分接上進行；有正、反勵磁的有載調(diào)壓變壓器，轉(zhuǎn)換選擇器正向連接時，如在所有分接選擇器位置進行了電壓比測量，反向連接時，允許只抽試1～2個分接。三繞組變壓器至少在包括***對繞組在內(nèi)的兩對繞組上分別進行電壓比測量。絕緣裝配后的半成品電壓比測量，三相應(yīng)分別進行相的電壓比測量；同時應(yīng)檢查繞組的電壓矢量關(guān)系（繞向與標志）是否正確。引線裝配后或總裝配后的電壓比測量應(yīng)分別對各分接進行電壓比測量，如果可能還應(yīng)驗證聯(lián)結(jié)組及電壓矢量關(guān)系是否正確。安微變壓器參數(shù)測定變壓器是利用電磁感應(yīng)原理，從一個電路向另一個電路傳遞電能或傳輸信號的一種電器。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="變壓器絕緣等級,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368417158203/3339392.png"></div><p style="text-indent:25px">短路試驗前變壓器應(yīng)具備的條件和準備工作按如下要求進行：（1）應(yīng)按照規(guī)定的例行試驗項目（不包括雷電沖擊試驗）和要求，試驗合格后方能進行短路試驗；對試驗沒有影響的附件（如可拆卸的冷卻器）可以不安裝；其中負載試驗應(yīng)在zui大分接、主分接和zui小分接上進行，提供以上三個分接的短路阻抗和負載損耗。（2）短路試驗開始時，繞組的平均溫度zui好在10℃～40℃之間。（3）試品運到試驗站后、應(yīng)在現(xiàn)場吊心沿線圈的軸向在高壓側(cè)和低壓側(cè)的線段和墊塊上高壓側(cè)和低壓側(cè)分別畫出兩條、三條直線，如有可能幅向也應(yīng)畫對應(yīng)軸向的等條數(shù)的直線作為標記；然后拍照，定為試品短路試驗前的形態(tài)。（4）試驗前還應(yīng)精確測量被試一對繞組試驗分接的電抗值，重復(fù)測量電抗的誤差應(yīng)在±0.2%以內(nèi)；有條件時，可進行繞組頻譜分析測量。</p><p style="text-indent:25px">在進行大型變壓器低壓側(cè)直阻測量時,***個顯示出的數(shù)據(jù)與真實值差甚遠，且保持一段時間的穩(wěn)定,然后逐漸開始變化,變大或變化，變化的速度逐漸加快，然后逐漸變慢zui后達到幾乎不在變化,得到真實阻值。這種變化一般是朝一個方向變化，比如一直變小到真實值。出現(xiàn)忽大忽小,長時間飄忽不定,或很長時間數(shù)據(jù)保持不變或變化甚小且距真實值相差甚遠則應(yīng)檢查接線是否有誤。但對于超大型變壓器如370MVA或400MVA變壓器在助磁測量時有一個過沖，在變小過程中有一個低于真實值區(qū)然后回升到真實值。變壓器在使用期間一定要聯(lián)系專業(yè)的檢測人員進行檢測。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="變壓器絕緣等級,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368770742188/2167683.png"></div><p style="text-indent:25px">專業(yè)的變壓器綜合測試儀都有哪些特性，小編在這里和大家分享一下。 1、變壓器綜合測試儀雖然體積小，但是內(nèi)部已高度集成，在性能方面***不比以前那種體積大的測試儀，而且使用起來非常簡單，已經(jīng)是現(xiàn)在的電力部門更新?lián)Q代的一種UDE理想產(chǎn)品; 2、變壓器綜合測試儀由zui初的數(shù)據(jù)采集到zui后顯示、打印，保存給用戶，全部集成在一起，而且全程實現(xiàn)完全自動化，在其測試得出的數(shù)據(jù)可以相應(yīng)同步到表格里，避免了人工轉(zhuǎn)抄的麻煩; 3、專業(yè)的變壓器綜合測試儀帶液晶背光顯示屏，同時顯示三相電壓電流等十八個參量;在其數(shù)字儀表取其代指針儀表。每次更新的數(shù)據(jù)做到同步鎖定在屏幕上，不但解決了因視差、換算、計算等諸多因素造成的誤差，而且徹底解決了操作人員同時因讀和看多塊表計，又要記錄多組數(shù)據(jù)的困難，保證試驗數(shù)據(jù)的準確可靠。一般用來檢測變壓器的儀器靈敏度都很高。湖北電子變壓器空載測試</p><p style="text-indent:25px">變壓器的功能主要有：電壓變換；電流變換，阻抗變換；隔離；穩(wěn)壓（磁飽和變壓器）等。變壓器絕緣等級</p><p style="text-indent:25px">電勢差試驗方法及注意事項如下： (1) 在非被試繞組供給勵磁電壓，其大小應(yīng)使每匝電壓為1V； (2) 連接并聯(lián)支路的一端，測量各同名端的電勢差，其電勢差應(yīng)等于零；為了避免由于回路接觸不良造成電勢差為零，允許在測量中加入一匝，使電勢差為1V；臨時匝應(yīng)分別正繞與反繞串入回路，其電勢差均應(yīng)近似等于1V； (3) 為了避免因增加串聯(lián)匝數(shù)而使電勢差減小的現(xiàn)象，測量電勢差的電壓表應(yīng)盡量采用高內(nèi)阻的電壓表； (4) 電勢差試驗時被試繞組的電壓雖然只有1V，但其電位往往很高；在并聯(lián)支路中如有串聯(lián)線段，試驗中可將其打開，分別測量幾個并聯(lián)支路的電勢差，以降低被試繞組的電位； (5) 測量儀表的一端應(yīng)可靠接地，儀表的量程開始應(yīng)置于zui大位罝，送電指示正常后，再逐級縮小量程，以避免損壞儀表。變壓器絕緣等級</p><p style="text-indent:25px">深圳市展榮新精密電子有限公司位于航城街道黃田社區(qū)崗貝工業(yè)區(qū)綜合樓10棟401。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下變壓器電感平衡測試儀，變壓器綜合測試儀，高壓測試儀19053，展榮新（臺儀達）系列產(chǎn)品深受客戶的喜愛。公司將不斷增強企業(yè)重點競爭力，努力學(xué)習(xí)行業(yè)知識，遵守行業(yè)規(guī)范，植根于儀器儀表行業(yè)的發(fā)展。展榮新精密電子立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2354328.html</p></div></div></div></div></div><div id="fn4ekw8" class="page-right twoColRt"><div id="zdxebi3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xra3prn" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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