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class="proBig"><div id="3c4k4y8" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368225537109/2074462.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mvcjq3g" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368225537109/2074462.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8tcyp3w" 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)品關鍵詞：</span>河南變壓器的試驗,變壓器</p><p><span>***更新：</span>2020-10-21 00:24:29</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="clsjqmt" 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="tseqhdp" class="page-proshow02"><p class="title">詳細說明</p><div id="xroami3" class="box"><p><p style="text-indent:25px">當變壓器的初級繞組通電后，線圈所產(chǎn)生的磁通在鐵心流動，因為鐵心本身也是導體，在垂直于磁力線的平面上就會感應電勢，這個電勢在鐵心的斷面上形成閉合回路并產(chǎn)生電流，好象一個旋渦所以稱為“渦流”，河南變壓器的試驗。這個“渦流”使變壓器的損耗增加，并且使變壓器的鐵心發(fā)熱變壓器的溫升增加。由“渦流”所產(chǎn)生的損耗我們稱為“鐵損”。另外要繞制變壓器需要用大量的銅線，這些銅導線存在著電阻，電流流過時這電阻會消耗一定的功率，河南變壓器的試驗，這部分損耗往往變成熱量而消耗，我們稱這種損耗為“銅損”。所以變壓器的溫升主要由鐵損和銅損產(chǎn)生的，河南變壓器的試驗。變壓器發(fā)生不同性質(zhì)的故障，聲音會發(fā)生變化。這時應根據(jù)現(xiàn)場情采取措施，查找故障原因。河南變壓器的試驗</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南變壓器的試驗,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368225537109/2074462.png"></div><p style="text-indent:25px">變壓器設計制造完成后，其線圈和內(nèi)部結(jié)構(gòu)就確定下來，因此對一臺多繞組的變壓器線圈而言，如果電壓等級相同、繞制方法相同，則每個線圈對應參數(shù)(Ci、Li)就應該是確定的。因此每個線圈的頻域特征響應也隨之確定，對應的三相線圈之間其頻率圖譜具有一定可比性。變壓器在試驗過程中發(fā)生匝間、相間短路，或在運輸過程中發(fā)生沖撞，造成線圈相對位移，以及運行過程中在短路和故障狀態(tài)下因電磁拉力造成線圈變形，就會使變壓器繞組的分布參數(shù)發(fā)生變化。進而影響并改變變壓器原有的頻域特征，即頻率響應發(fā)生幅度變化和諧振頻點偏移等。惠州干式變壓器檢測變壓器大家可能認為在公眾場合用的比較多，但其實在住宅小區(qū)中也有變壓器的存在。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南變壓器的試驗,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368098925781/9464422.png"></div><p style="text-indent:25px">短路承受能力試驗是投擬運行中極為嚴酷的短路故障，即網(wǎng)絡容量足夠大、負載阻抗為零，而且在電壓過零時獲得zui人的非對稱電流。變壓器繞組、分接開關、套管、引線及各機械緊固部件將承受來自短路電流所產(chǎn)生的巨大的動穩(wěn)定效應與熱效應的考核。從而驗證結(jié)構(gòu)的合理性與運行的可靠性。變壓器承受熱穩(wěn)定的能力，通常按照產(chǎn)品在運行溫度下發(fā)生短路，對稱短路電流產(chǎn)生的熱效應全部用來提高繞組溫度；GB 1094.5規(guī)定變壓器承受熱穩(wěn)定能力可通過計算來驗證。承受短路的動穩(wěn)定能力應通過試驗或計算和設計驗證其結(jié)構(gòu)、工藝和制造的討靠性；試驗通常在強電流試驗站進行；試驗電源可以是網(wǎng)絡，也可以是沖擊發(fā)電機組，一般均需配置合適的短路試驗變壓器和電抗器。</p><p style="text-indent:25px">我們選擇試驗變壓器時，主要考慮以下幾點：（1）電壓。依據(jù)試品的要求，首先選用具有合適電壓的試驗變壓器，使試驗變壓器的高壓側(cè)額定電壓Un高于被試品的試驗電壓Us,即Un>Us。其次應檢查試驗變壓器所需的低壓側(cè)電壓，是否能和現(xiàn)場電源電壓，調(diào)壓器相匹配。（2）電流。試驗變壓器的額定輸出電流In應大于被試品所需的電流Is，即In>Is。被試品所需的電流可按其電容估算，Is=Us w Cx，其中Cx包括試品電容和附加電容（F）。（3）容量。根據(jù)試驗變壓器輸出的額定電流及額定電壓，便可確定試驗變壓器的容量，即P=UnIn。根據(jù)部頒標準規(guī)定，我國試驗變壓器的電壓等級有：5、10、25、35、50、100、150、300kV等；容量等級有：3、5、10、25、50、100、150、200kVA等。由計算結(jié)果，查部頒標準即可選出所需要的試驗變壓器。如有特殊要求，一般可向制造廠商訂購特殊規(guī)格的試驗變壓器。對于零部件松動、接觸不良甚至存在放電現(xiàn)象，應及時斷開變壓器跌落保險，消除隱患。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南變壓器的試驗,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368205908203/8826371.png"></div><p> 首先選擇變壓器的額定電壓。高壓側(cè)電壓與所接入電網(wǎng)電壓相等，低壓側(cè)電壓比低壓側(cè)電網(wǎng)的電壓高10%或5%（取決變壓器電壓等級和阻抗電壓大?。?；額定容量選擇。計算變壓器所帶負荷的大?。ㄒ蠼y(tǒng)計比較大綜合負荷，將有功負荷kW值換算成視在功率kVA），如果是兩臺變壓器，那么每臺變壓器的容量可按照比較大綜合負荷的70%選擇，一臺變壓器要按總負荷考慮，并留有適當?shù)脑６取Ｆ渌餍菂?shù)可結(jié)合變壓器產(chǎn)品適當考慮。例如：選擇35/10kV變壓器。假定比較大負荷為3500kW，功率因數(shù)為，選兩臺變壓器，容量S=×3500/，可選擇3150kVA的變壓器，電壓比為35kV/。再從產(chǎn)品目錄中選擇型號。變壓器對電子元器生產(chǎn)要求還是比較高的。河南變壓器的試驗</p><p style="text-indent:25px">在變壓器的日常檢查中還要著重關注吸濕器的檢查。河南變壓器的試驗</p><p> 1、變壓器定義、作用 </p> <p> 變壓器是一種相對靜止的電氣設備，由繞在同一個鐵心上的兩個或兩個以上的繞組組成的，繞組之間通過交變的磁通的相互聯(lián)系。為了把發(fā)電廠發(fā)出的電能經(jīng)濟的傳輸、合理的分配以及安全的使用，都要用到電力變壓器。 </p> <p> 2、變壓器工作原理 </p> <p> 簡單說變壓器的工作原理就是“電生磁，磁生電”。變壓器的初級（一次）線圈和次級（二次）線圈共同繞在一個鐵芯上，當一次線圈通入電壓U1后，在鐵芯中產(chǎn)生交變磁通，這個磁通穿過一次繞組和二次繞組，根據(jù)電磁感應定律，在一次繞組和二次繞組中分別產(chǎn)生感應電勢E1和E2。根據(jù)電磁感應定律可知，一次側(cè)、二次側(cè)繞組的感應電勢分別為：E1/E2=U1/U2=N1/N2=K(k為變比) </p> <p> <br /> 河南變壓器的試驗</p><p style="text-indent:25px">深圳市展榮新精密電子有限公司主要經(jīng)營范圍是儀器儀表，擁有一支專業(yè)技術團隊和良好的市場口碑。公司業(yè)務分為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)品等，目前不斷進行創(chuàng)新和服務改進，為客戶提供良好的產(chǎn)品和服務。公司從事儀器儀表多年，有著創(chuàng)新的設計、強大的技術，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務。展榮新精密電子立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術理念，飛快響應客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1636341.html</p></div></div></div></div></div><div id="vzbneqh" class="page-right twoColRt"><div id="gag28th" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="w883xmd" 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" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="fz2zyul" class="recomPic likePro"><a 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