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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="yiacubt" class="twoCol"><div id="3i24sda" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產品供應</a>?<a href="http://m.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://m.cdcfah.com/cp/second-dgdq_dgyqybwr/">電工儀器儀表</a>?<a href="http://m.cdcfah.com/cp/third-dgyqybwr_cscsyqez/">參數(shù)測試儀器</a>?上海局放試驗變壓器歡迎咨詢展榮新精密電子供應</p><div id="zega8l8" class="leftbox clearfix"><h1>上海局放試驗變壓器歡迎咨詢展榮新精密電子供應</h1><div id="7shdpbi" class="proBig"><div id="3acubsu" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368098925781/9464422.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8xzrtfr" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368098925781/9464422.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="p8lheqn" 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>產品關鍵詞：</span>上海局放試驗變壓器,變壓器</p><p><span>***更新：</span>2021-01-12 11:12:55</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="3umtq7k" 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="vpby7pj" class="page-proshow02"><p class="title">詳細說明</p><div id="auryqsu" class="box"><p><p style="text-indent:25px">單相空載測試單相空載測試項目通常用來測試單相變壓器的空載損耗和空載電流百分比。也可用來對三相變壓器進行逐相測試（主要用來檢測被測變壓器有沒有單相故障）。在現(xiàn)場無三相電源的情況下，也需要用到這種試驗方法。單相空載用儀器的A相電壓和A相電流進行測試。如圖所示，用一單相電源作為測試電源，火線接到測試儀的A相電流端子正端，黃鉗子粗線接到A相電流端子的負端，細線接到A相電壓端子Ua，紅鉗子粗線直接接到測試電源的零線，細線接到B相電壓端子Ub，上海局放試驗變壓器，兩把鉗子分別夾到低壓側兩個接線柱上，上海局放試驗變壓器，上海局放試驗變壓器。高壓側開路。在線圈溫度穩(wěn)定的情況下進行測量，要求變壓器油箱上、下部的溫度之差不超過３℃。上海局放試驗變壓器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海局放試驗變壓器,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368098925781/9464422.png"></div><p style="text-indent:25px">變壓器的制作中，線圈的機器繞制和手工繞制各有什么優(yōu)缺點:機器繞制變壓器的優(yōu)點是效率高且外觀成形漂亮，但繞制高個子小洞眼的環(huán)型變壓器卻比較麻煩，而且在絕緣處理工藝的可靠性方面反不如手工繞制到位。手工繞制可以將變壓器的漏磁做得非常小，其在繞制過程中能針對線圈匝數(shù)的布局隨時予以調整，所以真正的Hi–END變壓器一定是純手工繞制，純手工繞制的缺點是效率低、速度慢。進口放大器中，環(huán)型變壓器的應用仍然是主流，這基本說明了一個問題。發(fā)燒友對變壓器的評價要客觀公正，你不能拿一個沒做好的東西作參考而說它不好。有人說環(huán)型變壓器容易磁飽和，那你為什么不去想辦法把它做到不容易磁飽和?而原本通過技術手段是可以做到這一點的。不下足功夫或者一味地為了省成本，那它當然就容易磁飽和了。同理，只要你認真制作，EI型變壓器的效率也是能做到很高的。上海局放試驗變壓器采用立式機箱結構，便于現(xiàn)場使用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海局放試驗變壓器,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368157539063/6860772.png"></div><p style="text-indent:25px">空載電流的檢測：(1)直接測量法。將次級所有繞組全部開路，把萬用表置于交流電流擋(500mA，串入初級繞組。當初級繞組的插頭插入220V交流市電時，萬用表所指示的便是空載電流值。此值不應大于變壓器滿載電流的10％～20％。一般常見電子設備電源變壓器的正?？蛰d電流應在100mA左右。如果超出太多，則說明變壓器有短路性故障。(2)間接測量法。在變壓器的初級繞組中串聯(lián)一個10/5W的電阻，次級仍全部空載。把萬用表撥至交流電壓擋。加電后，用兩表筆測出電阻R兩端的電壓降U，然后用歐姆定律算出空載電流I空，即I空=U/R。F、空載電壓的檢測。將電源變壓器的初級接220V市電，用萬用表交流電壓接依次測出各繞組的空載電壓值(U21、U22、U23、U24)應符合要求值，允許誤差范圍一般為：高壓繞組≤±10％，低壓繞組≤±5％，帶中心抽頭的兩組對稱繞組的電壓差應≤±2％。</p><p style="text-indent:25px">變壓器直流電阻試驗及實驗儀器：試驗介紹：測量直流電阻的目是檢查電氣設備繞組或線圈的質量及回路的完整性，以發(fā)現(xiàn)制造或運行中因振動而產生的機械應力等原因所造成的導線斷裂、接頭開焊、接觸不良、匝間短路等缺陷。試驗設備：10A直流電阻測試儀被試設10KV/1000kVA油浸式變壓器（高壓側為三角形接法，低壓側星形接法）試驗方法：試驗接線：高壓側：AB/AC/BC,低壓側：AO/BO/CO1、測量前的準備：首先將電源線以及地線可靠連接到直阻儀上，然后把隨機附帶的測試線連接到直阻儀面板與其顏色相對應的輸入輸出接線端子上，將測試線末端的測試鉗夾到待測變壓器繞組兩端，并用力摩擦接觸點，以確保接觸良好。所有的測試結果可以記錄的形式保存起來，以備查閱。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海局放試驗變壓器,變壓器" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368129267578/9378652.png"></div><p style="text-indent:25px">變壓器中的硅鋼片材料有什么講究：由于硅鋼在交變磁場中的損耗很小，所以變壓器主要都是采用硅鋼片來作磁性材料。硅鋼片可分為熱軋和冷軋兩類，冷軋硅鋼帶由于具有較高的導磁系數(shù)和較低的損耗，因此用來制作變壓器具有體積小、重量輕、效率高的優(yōu)勢。熱軋硅鋼帶的性能則略遜色于冷軋硅鋼帶。普通的EI型變壓器是將硅鋼板沖制成0.35–0.5mm厚的E型和I型片子，經過熱處理后再插入繞組線包內，這類鐵芯以使用熱軋硅鋼片居多(含硅量很高的很好硅鋼片型號為D41、D42、D43、D301)。環(huán)型和C型變壓器的鐵芯則是采用冷軋硅鋼帶經卷繞而成形，其中C型變壓器系經熱處理浸漆后再切開制成。采用高頻開關電源技術，輸出電流大，適合大中型變壓器直流電阻測量。上海局放試驗變壓器</p><p style="text-indent:25px">高度調節(jié)及過濾的WRT-10的電流輸出允許在大型電力變壓器上做繞組電阻測量。上海局放試驗變壓器</p><p style="text-indent:25px">對于Ⅰ類和Ⅱ類的單相變壓器，試驗次數(shù)為三次；如無另行規(guī)定，帶有分接的變壓器的試驗應分別在zui大、額定和zui小分接位置上各進行一次；三相變壓器試驗次數(shù)為九次，在不同分接位置上進行，即在旁柱的zui大分接、中柱的額定分接和另一旁柱的zui小分接位置上分別進行三次。對于Ⅲ類變壓器，其試驗程序和分接位置通常由制造單位和用戶協(xié)商確定，一般與Ⅰ類和Ⅱ類變壓器相同。每次試驗除用示波器記錄電流波形外，還應派專人監(jiān)視試品；每次試驗過后，應對電流波形、氣體繼電器進行觀察，并測量該分接的電抗值。短路試驗后應重復全部例行試驗，包括在100.0%規(guī)定試驗電壓下的絕緣試驗；如果規(guī)定了雷電沖擊試驗，也應在此階段中進行；低對于Ⅰ類變壓器，除絕緣試驗外的其他試驗項目，可以不做。上海局放試驗變壓器</p><p 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