北京電流互感器批發(fā)多少錢歡迎咨詢啟東雙贏電子科技供應(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="當(dāng)發(fā)生短路故障時，短路電流較正常負荷電流一般要大很多倍，這樣大的短路電流會產(chǎn)生很大的機械應(yīng)力和熱效應(yīng)，對電流互感器是有害的。故選擇電流互感器時，除容量和絕緣水平應(yīng)滿足要求外，還要校驗在短路時的機械應(yīng)力和熱效應(yīng)，使其不超過電流互感器的額定允許"><meta name="keywords" content="北京電流互感器批發(fā)多少錢,電流互感器"><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" 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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dcj8j7s" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shuangying/637314759955478516/5167291.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="atfhijv" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>北京電流互感器批發(fā)多少錢,電流互感器</p><p><span>***更新：</span>2021-02-03 12:13:29</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="lfhj2pc" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">啟東雙贏電子科技有限公司</a></p><p><span>聯(lián)系人：</span>楊生</p><p><span>郵箱: </span>jmin_yang@126.com</p><p><span>電話: </span>18666184026</p><p><span>傳真: </span>0513_</p><p><span>網(wǎng)址: </span>http://www.qdsy-sensor.cn</p><p><span>手機: </span>0513-86378688</p><p><span>地址: </span>寅陽鎮(zhèn)洪佳路8號</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="cbi3o5t" class="page-proshow02"><p class="title">詳細說明</p><div id="qi38s9d" class="box"><p><p style="text-indent:25px">當(dāng)發(fā)生短路故障時，短路電流較正常負荷電流一般要大很多倍，這樣大的短路電流會產(chǎn)生很大的機械應(yīng)力和熱效應(yīng)，對電流互感器是有害的。故選擇電流互感器時，除容量和絕緣水平應(yīng)滿足要求外，還要校驗在短路時的機械應(yīng)力和熱效應(yīng)，使其不超過電流互感器的額定允許值。在運行的任何情況下，電流互感器二次繞組端子是不允許開路的，否則將產(chǎn)生危險的高電壓，北京電流互感器批發(fā)多少錢，造成人身和設(shè)備事故。這是因為電流互感器二次繞組開路時，互感器一次繞組中的全部電流均為勵磁電流，使鐵芯中的磁通密度有效上升，從而在二次繞組中感應(yīng)出高達數(shù)千伏的感應(yīng)電勢，北京電流互感器批發(fā)多少錢，北京電流互感器批發(fā)多少錢，威脅著二次繞組的絕緣，同時也威脅工作人員的人身安全。電流互感器使用原則：電流互感器的接線應(yīng)遵守串聯(lián)原則。北京電流互感器批發(fā)多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京電流互感器批發(fā)多少錢,電流互感器" src="https://tyunfile.71360.com/UploadFile/shuangying/637314759955478516/5167291.png"></div><p style="text-indent:25px">電流互感器按絕緣介質(zhì)分：干式電流互感器，由普通絕緣材料包扎，經(jīng)浸漬漆處理的，有塑料外殼和無塑料外殼的電流互感器，多數(shù)為低壓電流互感器。澆注式電流互感器。用環(huán)氧樹脂或其他樹脂混合材料澆注成型的電流互感器。油浸式電流互感器。由絕緣紙和絕緣油作為絕緣，一般為戶外型。目前我國在各種電壓等級均為常用。氣體絕緣電流互感器。主絕緣由氣體構(gòu)成。瓷絕緣，多數(shù)一杯澆注絕緣取代。電流互感器按絕緣介質(zhì)分類就是以上的幾種，它們在生活中都比較常見。北京電流互感器批發(fā)多少錢電力系統(tǒng)中二次設(shè)備采集電流的媒介，電流互感器的重要性不言而喻。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京電流互感器批發(fā)多少錢,電流互感器" src="https://tyunfile.71360.com/UploadFile/shuangying/637314759936953125/8060107.png"></div><p style="text-indent:25px">電流互感器電力拖動線路中的保護。大功率電動機中的過載保護，往往由于電流大，而無法購到相應(yīng)的熱繼電器，在這樣的情況下，一般采用加裝電流互感器的方法來解決。其實質(zhì)是將大電流變換成小電流用5A以內(nèi)的熱繼電器足可滿足過載保護的要求：用于大功率自耦降壓啟動，電動機中的過載保護。用于大功率頻敏變阻器啟動，電動機中的過載保護。用于大功率星-角降壓啟動，電動機中的過載保護。這些就是電流互感器電力拖動線路中的保護和電動機中的過載保護。</p><p style="text-indent:25px">電流互感器根據(jù)磁通可以分析出:pt不能短路,短路回產(chǎn)生過流,ct不能開路,開路回產(chǎn)生高壓。主要區(qū)別是正常運行時工作狀態(tài)大不相同,主要表現(xiàn)為:電流互感器二次可以短路,但是不得開路;對于二次側(cè)的負荷來說,而電流互感器的一次卻內(nèi)阻很大,以至可以認為是一個內(nèi)阻無窮大的電流源。電流互感器的工作原理、等值電路與一般變壓器相同，只是其原邊繞組串聯(lián)在被測電路中，且匝數(shù)很少；副邊繞組接電流表、繼電器電流線圈等低阻抗負載，近似短路。正常情況下，電流互感器在近于短路狀態(tài)下運行。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京電流互感器批發(fā)多少錢,電流互感器" src="https://tyunfile.71360.com/UploadFile/shuangying/637314760317451172/3910390.png"></div><p style="text-indent:25px">電流互感器是依據(jù)電磁感應(yīng)原理將一次側(cè)大電流轉(zhuǎn)換成二次側(cè)小電流來測量的儀器。電流互感器是由閉合的鐵心和繞組組成。它的一次側(cè)繞組匝數(shù)很少，串在需要測量的電流的線路中。因此它經(jīng)常有線路的全部電流流過，二次側(cè)繞組匝數(shù)比較多，串接在測量儀表和保護回路中，電流互感器在工作時，它的二次側(cè)回路始終是閉合的，因此測量儀表和保護回路串聯(lián)線圈的阻抗很小，電流互感器的工作狀態(tài)接近短路。電流互感器是把一次側(cè)大電流轉(zhuǎn)換成二次側(cè)小電流來測量，二次側(cè)不可開路。電流互感器的基本結(jié)構(gòu)主要由一次繞組，二次繞組和鐵芯構(gòu)成。廣州電流互感器定制廠家</p><p style="text-indent:25px">組合式互感器多安裝于高壓計量箱、柜，用作計量電能或用作用電設(shè)備繼電保護裝置的電源。北京電流互感器批發(fā)多少錢</p><p style="text-indent:25px">在單相回路中*有一個回路，這樣可用一臺電流互感器來測量回路中的電流。我們實際使用的電燈的回路中就是采用這種方式。在三相三線的電氣回路中，因為沒有相線和中性線間負荷，便可以用兩臺電流互感器，接成V型接線的方式，接二只電流表測量電流。這種接線方法：是將兩只電流表，接在二次線圖的公用導(dǎo)線上。為了節(jié)約器材和簡化接線，在三相負荷基本平衡時，也可以用一臺電流互感器接一只電流表參考使用。同時在三相三線式的回路里，有時也采用三臺電流互感器接成角型接線，分別測量三相電流。在三相四線制供電系統(tǒng)中，應(yīng)安裝三臺電流互感器分別供電流表使用，接線方式可采用星形接線。北京電流互感器批發(fā)多少錢</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3144027.html</p></div></div></div></div></div><div id="xhtamyu" class="page-right twoColRt"><div id="e8hjbn8" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="sq8x3d3" 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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