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href="http://www.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://www.cdcfah.com/cp/second-dgdq_dgyqybwr/">電工儀器儀表</a>?<a href="http://www.cdcfah.com/cp/third-dgyqybwr_cscsyqez/">參數(shù)測試儀器</a>?山東電子變壓器效率測試誠信經(jīng)營展榮新精密電子供應(yīng)</p><div id="dxxfnt5" class="leftbox clearfix"><h1>山東電子變壓器效率測試誠信經(jīng)營展榮新精密電子供應(yīng)</h1><div id="7b75xhd" class="proBig"><div id="t7r7xf5" 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="hbxnlh5" 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="prhfvjh" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>山東電子變壓器效率測試,變壓器</p><p><span>***更新：</span>2021-02-06 12:11:55</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="fbrhdbh" 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(jī): </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(dāng)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="hvbzv7h" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vjpfdz5" class="box"><p><p> 從行輸出變壓器的電路符號(hào)中可以看出一次和二次以及繞組的結(jié)構(gòu)。圖3-45行輸出變壓器電路符號(hào)行輸出變壓器是組成行輸出高壓電路的重要元器件，電視機(jī)顯像管所需要的高壓、中壓和其他電路需要的低壓要通過行輸出高壓電路來獲得。中、高壓是利用行掃描逆程期間產(chǎn)生的半個(gè)周期諧振電壓，通過行輸出變壓器的升壓經(jīng)整流后獲得的。重要提示利用行逆程回掃期間的能量來獲得中、高電壓具有下列一些好處。(1)有利于節(jié)省能量，降低整機(jī)功耗。行輸出級消耗的能量約占整機(jī)功耗的60%。(2)由于行頻高達(dá)15625Hz，頻率高，有利于濾波，即用較小的濾波電容可獲得很好的濾波性能。(3)行逆程脈沖電壓較高，較容易獲得中、高壓。(4)具有保護(hù)顯像管的作用。當(dāng)行振蕩電路發(fā)生故障時(shí)，行逆程脈沖消失，山東電子變壓器效率測試，可起保護(hù)作用。(5)通過行輸出變壓器可以獲得上萬伏的顯像管陽極高壓，獲得幾百伏的顯像管加速極電壓和聚焦極電壓，以及其他電路的低電壓。3.行輸出變壓器實(shí)用電路圖3-46所示是行輸出變壓器電路。輸入該變壓器的是行逆程脈沖。通過多組二次升壓繞組、整流電路，可得到多種電壓等級的低、中、高直流電壓，山東電子變壓器效率測試，山東電子變壓器效率測試。從升壓繞組上得到20～25kV高壓，作為顯像管高壓。從升壓繞組抽頭得到直流電壓。變壓器測試儀：用變比電橋測量變壓器的變比，操作過程繁瑣。山東電子變壓器效率測試</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東電子變壓器效率測試,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368225537109/2074462.png"></div><p style="text-indent:25px">大部分的變壓器均有固定的鐵芯，其上繞有一次與二次的線圈。基于鐵材的高導(dǎo)磁性，大部分磁通量局限在鐵芯里，因此，兩組線圈藉此可以獲得相當(dāng)高程度之磁耦合。在一些變壓器中，線圈與鐵芯二者間緊密地結(jié)合，其一次與二次電壓的比值幾乎與二者之線圈匝數(shù)比相同。因此，變壓器之匝數(shù)比，一般可作為變壓器升壓或降壓的參考指標(biāo)。由于此項(xiàng)升壓與降壓的功能，使得變壓器已成為現(xiàn)代化電力系統(tǒng)之一重要附屬物，提升輸電電壓使得長途輸送電力更為經(jīng)濟(jì)，至于降壓變壓器，它使得電力運(yùn)用方面更加多元化，可以這樣說，沒有變壓器，現(xiàn)代工業(yè)無法達(dá)到現(xiàn)狀。變壓器綜合特性測試臺(tái)變壓器發(fā)生不同性質(zhì)的故障，聲音會(huì)發(fā)生變化。這時(shí)應(yīng)根據(jù)現(xiàn)場情采取措施，查找故障原因。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東電子變壓器效率測試,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368098925781/9464422.png"></div><p style="text-indent:25px">變壓器低電壓短路阻抗測試儀：概述短路阻抗是變壓器的重要參數(shù)，短路阻抗法是判斷繞組變形的傳統(tǒng)方法，根據(jù)GB1094.5-2008和IEC60076-5:2006規(guī)定，短路電抗的變化量是判斷變壓器繞組有無變形的判據(jù)。測量變壓器繞組參數(shù)也是檢驗(yàn)變壓器的制造工藝水平和判斷運(yùn)輸過程對變壓器繞組有無不良影響的有效手段。低電壓短路阻抗試驗(yàn)是鑒定運(yùn)行中變壓器受到短路電流的沖擊，或變壓器在運(yùn)輸和安裝時(shí)受到機(jī)械力撞擊后，檢查其繞組是否變形的較直接方法，它對于判斷變壓器能否投入運(yùn)行具有重要的意義，也是判斷變壓器是否要求進(jìn)行解體檢查的依據(jù)之一。</p><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(jì)算變壓器所帶負(fù)荷的大?。ㄒ蠼y(tǒng)計(jì)比較大綜合負(fù)荷，將有功負(fù)荷kW值換算成視在功率kVA），如果是兩臺(tái)變壓器，那么每臺(tái)變壓器的容量可按照比較大綜合負(fù)荷的70%選擇，一臺(tái)變壓器要按總負(fù)荷考慮，并留有適當(dāng)?shù)脑６?。其它明星參?shù)可結(jié)合變壓器產(chǎn)品適當(dāng)考慮。例如：選擇35/10kV變壓器。假定比較大負(fù)荷為3500kW，功率因數(shù)為，選兩臺(tái)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(hào)。變壓器大家可能認(rèn)為在公眾場合用的比較多，但其實(shí)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="山東電子變壓器效率測試,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368672089844/7803755.png"></div><p style="text-indent:25px">試驗(yàn)前準(zhǔn)備：1.了解被試設(shè)備現(xiàn)場情況及試驗(yàn)條件查勘現(xiàn)場，查閱相關(guān)技術(shù)資料，包括該設(shè)備出廠試驗(yàn)數(shù)據(jù)、歷年試驗(yàn)數(shù)據(jù)及相關(guān)規(guī)程等，掌握該設(shè)備運(yùn)行及缺陷情況。2. 測試儀器、設(shè)備的準(zhǔn)備選擇繞組變形測試儀及配套試驗(yàn)接線、筆記本電腦(安裝有繞組變形測試儀配套軟件、曲線相關(guān)系數(shù)計(jì)算軟件并拷貝有被試變壓器繞組變形歷史數(shù)據(jù)存檔)、溫濕度計(jì)、接地線、電源線(帶剩余電流動(dòng)作保護(hù)器)、安全帶、安全帽、電工常用工具、試驗(yàn)臨時(shí)安全遮欄、標(biāo)示牌等，并查閱測試儀器、設(shè)備及絕緣工器具的檢定證書有效期、相關(guān)技術(shù)資料、相關(guān)規(guī)程等3.辦理工作票并做好試驗(yàn)現(xiàn)場安全和技術(shù)措施工作負(fù)責(zé)人向試驗(yàn)人員交代工作內(nèi)容、帶電部位、現(xiàn)場安全措施、現(xiàn)場作業(yè)危險(xiǎn)點(diǎn)，明確人員分工及試驗(yàn)程序。響應(yīng)速度快，可在測量狀態(tài)直接轉(zhuǎn)換有載分接開關(guān)，儀器自動(dòng)刷新數(shù)據(jù)。山東電子變壓器效率測試</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。山東電子變壓器效率測試</p><p style="text-indent:25px">銅損是指變壓器線圈電阻所引起的損耗.當(dāng)電流通過線圈電阻發(fā)熱時(shí)，一部分電能就轉(zhuǎn)變?yōu)闊崮芏鴵p耗。由于線圈一般都由帶絕緣的銅線纏繞而成，因此稱為銅損。變壓器的鐵損包括兩個(gè)方面：一是磁滯損耗，當(dāng)交流電流通過變壓器時(shí)，通過變壓器硅鋼片的磁力線其方向和大小隨之變化，使得硅鋼片內(nèi)部分子相互摩擦，放出熱能，從而損耗了一部分電能，這便是磁滯損耗。另一是渦流損耗，當(dāng)變壓器工作時(shí)，鐵芯中有磁力線穿過，在與磁力線垂直的平面上就會(huì)產(chǎn)生感應(yīng)電流，由于此電流自成閉合回路形成環(huán)流，且成旋渦狀，故稱為渦流。渦流的存在使鐵芯發(fā)熱，消耗能量，這種損耗稱為渦流損耗。變壓器的效率與變壓器的功率等級有密切關(guān)系，通常功率越大，損耗與輸出功率就越小，效率也就越高。反之，功率越小，效率也就越低。山東電子變壓器效率測試</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3193933.html</p></div></div></div></div></div><div id="dpnlr7x" class="page-right twoColRt"><div id="flj9zhf" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jrhxtz5" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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