河南變壓器耐壓試驗儀 **** 展榮新精密電子供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="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，河南變壓器耐壓試驗儀，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(yīng)檢查試驗變壓器所需的低壓側(cè)電壓，是否能"><meta name="keywords" content="河南變壓器耐壓試驗儀,變壓器"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368500371094/6122012.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jct7nnz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368500371094/6122012.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="unjnjar" 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>河南變壓器耐壓試驗儀,變壓器</p><p><span>***更新：</span>2020-09-23 12:24:33</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="ui3pg8g" 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(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="waw3njk" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="kypoubc" class="box"><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，河南變壓器耐壓試驗儀，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(yīng)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(yīng)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(biāo)準(zhǔn)規(guī)定，我國試驗變壓器的電壓等級有：5、10、25、35、50、100，河南變壓器耐壓試驗儀、150、300kV等；容量等級有：3、5、10、25、50、100、150、200kVA等，河南變壓器耐壓試驗儀。由計算結(jié)果，查部頒標(biāo)準(zhǔn)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。變壓器檢測儀一般有很多種用來檢測變壓器的不同指標(biāo)。河南變壓器耐壓試驗儀</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南變壓器耐壓試驗儀,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368500371094/6122012.png"></div><p style="text-indent:25px">當(dāng)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(dǎo)體，在垂直于磁力線的平面上就會感應(yīng)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”。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(dǎo)線存在著電阻，電流流過時這電阻會消耗一定的功率，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。東莞高頻變壓器檢測在檢查變壓器的時候需要注意對套管進(jìn)行定期檢查。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南變壓器耐壓試驗儀,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368098925781/9464422.png"></div><p style="text-indent:25px">在進(jìn)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(yuǎn)，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(dá)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(yuǎn)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。</p><p style="text-indent:25px">電力變壓器安裝工藝控制標(biāo)準(zhǔn)： ① 基礎(chǔ)軌道水平誤差<3mm，中心偏差<5mm，每點墊鐵≤3塊，焊接牢固，軌道兩點接地。 ② 變壓器本體橫向中心偏差≤20 mm，滾輪轉(zhuǎn)動靈活，滾輪制動器裝配牢固。基礎(chǔ)軌道水平誤差滾輪轉(zhuǎn)動靈活，滾輪制動器裝配牢固。 ③ 變壓器本體接地取主地網(wǎng)不同地點進(jìn)行兩點接地。 ④ 鐵芯、線圈完好，絕緣墊塊密實無松動，油路無阻塞，絕緣層包纏均勻緊固，壓釘緊固良好，防松螺母鎖緊。線圈完好，絕緣墊塊密實無松動，絕緣層包纏均勻緊固，壓釘緊固良好。 ⑤ 分接開關(guān)引線正確牢固，接點清潔有彈性，切換裝置位置指示正確，轉(zhuǎn)軸操作均勻靈活。 ⑥ 有載調(diào)壓裝置一定要嚴(yán)格按照廠家說明書執(zhí)行。 ⑦ 器身箱底無污垢雜物，鐘罩防磁隔板緊固，法蘭對接平正，螺栓緊力均勻一致。 ⑧ 套管外觀無傷痕、裂紋、掉瓷、油位在油面線上，無滲漏。均壓罩內(nèi)無積水塵土，連接緊固。 ⑨ 套管安裝密封膠圈壓縮均勻一致，無滲漏，油位指示正常，油鏡方向正確。電力變壓器的不正常運行可能會導(dǎo)致機器損壞，如果做好日常維護工作，將會保證變壓器的安全和順利運行。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南變壓器耐壓試驗儀,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368417158203/3339392.png"></div><p style="text-indent:25px">對于三角形聯(lián)結(jié)的繞組進(jìn)行三相試驗時，如果低壓側(cè)為星形聯(lián)結(jié)，可采用測量低壓電流的方法；對于三角形聯(lián)結(jié)的繞組進(jìn)行單相試驗時，單相電壓應(yīng)施加在三角形的兩個角上，試驗時的電壓應(yīng)與三相試驗時的相間電壓相同；對于星形聯(lián)結(jié)繞組，如果電源容量不足以進(jìn)行上述單相試驗，而中性點可以利用且能承受相關(guān)的電流時，經(jīng)協(xié)商單相電源可施加于線端與中性點之間。短路試驗可以采用預(yù)先短路、選相合閘，也可以采用預(yù)先送電、選相短路的方法。對于單同心式繞組的變壓器采用預(yù)先短路時，為了避免zui初幾個周波中由于鐵心飽和產(chǎn)生的勵磁電流疊加在短路電流上，施加電壓的繞組應(yīng)該選距鐵心較遠(yuǎn)的那個繞組。對于雙同心式繞組（高/低/高）和交疊式繞組的變壓器采用預(yù)先短路的方法試驗時，制造單位需與用戶協(xié)商。用來檢測變壓器系數(shù)的儀器都需要對各個指標(biāo)精度非常高。江門變壓器耐壓試驗儀</p><p style="text-indent:25px">及時消除故障和補充油，確保油位保持在油標(biāo)1/4-3/4處對于變壓器保持穩(wěn)定是非常有必要的。河南變壓器耐壓試驗儀</p><p style="text-indent:25px">三相變壓器應(yīng)使用三相電源進(jìn)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(dāng)于三相試驗的線電壓。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(jìn)行試驗。首先施加小于70%試驗電流進(jìn)行調(diào)試；當(dāng)合閘相角、試驗電流的峰值和對稱值及持續(xù)時間均達(dá)到要求時，再進(jìn)行100.0%試驗電流的正式試驗；小于70%試驗電流不記人試驗次數(shù)。河南變壓器耐壓試驗儀</p><p style="text-indent:25px">深圳市展榮新精密電子有限公司致力于儀器儀表，是一家生產(chǎn)型的公司。公司業(yè)務(wù)涵蓋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(dá)）系列產(chǎn)品等，價格合理，品質(zhì)有保證。公司秉持誠信為本的經(jīng)營理念，在儀器儀表深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點，發(fā)揮人才優(yōu)勢，打造儀器儀表良好品牌。展榮新精密電子秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1387306.html</p></div></div></div></div></div><div id="qzlxofb" class="page-right twoColRt"><div id="hqmypqm" class="box01 margin10 clearfix"><h3><a 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