上海上海二工電流互感器貨源充足歡迎來電上海喆和機(jī)電科技供應(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=" 上海喆和定制銷售西門子電流互感器互感器的誤差包括比差和角差兩部分。比值誤差簡稱比差，一般用符號f表示，它等于實(shí)際的二次電流與折算到二次側(cè)的一次電流的差值，與折算到二次側(cè)的一次電流的比值，以百分"><meta name="keywords" content="上海上海二工電流互感器貨源充足,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" content="no-transform" /> <meta http-equiv="Cache-Control" 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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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>上海上海二工電流互感器貨源充足,電流互感器</p><p><span>***更新：</span>2020-11-01 14:04:06</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="dqxjf3q" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海喆和機(jī)電科技有限公司</a></p><p><span>聯(lián)系人：</span>李小雅</p><p><span>郵箱: </span>shzh-sh@qq.com</p><p><span>電話: </span>13761188658</p><p><span>傳真: </span>021_53862782</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-53862782</p><p><span>地址: </span>上海市靜安區(qū)恒豐北路100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="dlmnekv" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="38bvghy" class="box"><p><p> 上海喆和定制銷售西門子電流互感器互感器的誤差包括比差和角差兩部分。比值誤差簡稱比差，一般用符號f表示，它等于實(shí)際的二次電流與折算到二次側(cè)的一次電流的差值，與折算到二次側(cè)的一次電流的比值，以百分?jǐn)?shù)表示。角差：相角誤差簡稱角差，一般用符號δ表示，它是旋轉(zhuǎn)180°后的二次電流向量與一次電流向量之間的相位差。規(guī)定二次電流向量超前于一次電流向量δ為正值，反之為負(fù)值，用分（’）為計算單位。熱穩(wěn)定及動穩(wěn)定倍數(shù)：電力系統(tǒng)故障時，電流互感器受到由于短路電流引起的巨大電流的熱效應(yīng)和電動力作用，電流互感器應(yīng)該有能夠承受而不致受到破壞的能力，這種承受的能力用熱穩(wěn)定和動穩(wěn)定倍數(shù)表示。熱穩(wěn)定倍數(shù)是指熱穩(wěn)定電流1s內(nèi)不致使電流互感器的發(fā)熱超過允許限度的電流與電流互感器的額定電流之比。動穩(wěn)定倍數(shù)是電流互感器所能承受的額定電流瞬時值與其額定電流之比。類型區(qū)分編輯按用途分類按照用途不同，電流互感器大致可分為兩類[4]：測量用電流互感器（或電流互感器的測量繞組）：在正常工作電流范圍內(nèi)，向測量，上海上海二工電流互感器貨源充足、計量等裝置提供電網(wǎng)的電流信息，上海上海二工電流互感器貨源充足。保護(hù)用電流互感器（或電流互感器的保護(hù)繞組）：在電網(wǎng)故障狀態(tài)下，上海上海二工電流互感器貨源充足。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 D8-I電流互感器.上海上海二工電流互感器貨源充足</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海上海二工電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087835529280/6371670878355292804681260.png"></div><p> 上海喆和供應(yīng)西門子APT電流互感器ALH-0.66系列。上海喆和在對電流互感器進(jìn)行檢修時發(fā)現(xiàn)，即使互感器的二次線圈開路運(yùn)行，也不會造成設(shè)備損害。這一現(xiàn)象與傳統(tǒng)的電工手冊及各類教材所提出的電流互感器二次開路產(chǎn)生幾百伏以上、危及人身安全的高壓，鐵芯嚴(yán)重發(fā)熱，燒壞電流互感器并不一致。為了解決這一問題，弄清電流互感器的運(yùn)行參數(shù)，作者進(jìn)行了一系列的實(shí)驗(yàn)，在進(jìn)行了大量調(diào)查實(shí)驗(yàn)基礎(chǔ)上，得出了令人信服的結(jié)論。 </p> <p> 上海喆和發(fā)現(xiàn)，目前生產(chǎn)和應(yīng)用的電流互感器的發(fā)熱特性與傳統(tǒng)結(jié)論截然不同：其二次開路狀態(tài)工作時，一般不會過熱；只有極少數(shù)型號功耗增大，發(fā)熱嚴(yán)重，但在正常工作電流下，也不會燒壞設(shè)備。至于二次開路電壓，則始終在低壓范圍內(nèi)波動。上海喆和在對數(shù)十種型號的電流互感器進(jìn)行實(shí)驗(yàn)測定的基礎(chǔ)上，得出結(jié)論，二次開路時具有恒壓源和恒流源兩種電路的特性，可以穩(wěn)定、可靠地用作自動控制功率型信號源。這種突破傳統(tǒng)的電路運(yùn)用方式，可廣泛應(yīng)用于自動化控制設(shè)計，產(chǎn)生良好的經(jīng)濟(jì)效益和社會效益。 </p> <p> 從實(shí)際出發(fā)，不迷信傳統(tǒng)觀念，利用科學(xué)手段突破舊有框框，大膽創(chuàng)新，才能在科技事業(yè)中取得成績。上海上海二工電流互感器貨源充足上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 60*50II電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海上海二工電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087883095803/6371670878830958036124787.png"></div><p> 電流互感器二次開路電壓波形分析 </p> <p> 當(dāng)一次電流為0A時，二次輸出電壓波形為一條水平線。隨著一次電流的增大，56種電流互感器波形變化十分復(fù)雜，又各具有其自身特色。如6號互感器，一次電流為3A，二次電壓波形為正弦波，一次電流從4A增至150A波形畸變，隨著一次電流增**形畸變加劇，其變化特別是有效寬度變窄，峰—峰值上升，占空因數(shù)下降，但每半周包圍的面積增加甚微。 </p> <p> 比差特性分析 </p> <p> 目前，我國計量電流時，要求用1．5mm2的銅線將電流互感器二次線圈和電度表電流線圈短接，這是降低精度產(chǎn)生正比差的應(yīng)用方法。以母線穿心式150／5的電流互感器為例，我們分別以1．5mm2長4m的銅線，將其二次線圈分別與150／5A的電流表和電度表的電流線圈串聯(lián)時，當(dāng)一次穿心電流為150A時，所有電流互感器都能使電流表碰針，若一次電流降至135A，電流表示數(shù)為140～150A。 </p> <p> 在變流實(shí)驗(yàn)臺上測得8000個數(shù)據(jù)表明，當(dāng)一次電流超過額定值10％，隨著一次電流增大，正比差越來越明顯，而一次電流為15A以下時，電流互感器二次測中的電流表示數(shù)有負(fù)比差。 </p><p> 對于電流互感器退磁，一次繞組開路，二次繞組通以工頻電流，從零開始逐漸增加到一定的電流值(該電流值與互感器的設(shè)計測量上限有關(guān)，一般為額定電流的20-50%左右?？梢噪娏骰ジ衅鬟@樣判斷，如果電流突然急劇變大，此時表示鐵芯以進(jìn)入磁飽和階段)。然后再將電流緩慢降為零，如此重復(fù)2-3次。在斷開電源前，應(yīng)將一次繞組短接，才斷開電源。鐵芯退磁完成。此方法稱開路退磁法。對于有些電流互感器，由于二次繞組的匝數(shù)都比較多。若采用開路退磁法，開路的繞組可能產(chǎn)生高電壓。因此可以在二次繞組接上較大的電阻(額定阻抗的10-20倍)。一次繞組通以電流，從零漸變到互感器一次繞組的允許的額定電流，再漸變到零，如此重復(fù)2-3次。由于接有負(fù)載鐵芯可能不能完全退磁。由于一次繞組的額定電流有限制，過大的話可能燒壞一次繞組。如果接有負(fù)載的二次繞組產(chǎn)生電壓不是過高的話，可以加大二次繞組的負(fù)載電阻。這樣可以提高退磁效果。準(zhǔn)確度檢查互感器誤差試驗(yàn)一般采用被測互感器與標(biāo)準(zhǔn)互感器進(jìn)行比較，兩互感器的二次電流差即為被測互感器誤差。此種檢驗(yàn)方法稱比較法。標(biāo)準(zhǔn)互感器要求比被測互感器高出二個等級，此時標(biāo)準(zhǔn)互感器誤差可忽略不計。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 D12電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海上海二工電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087581865934/6371670875818659347638789.jpg"></div><p> 被測互感器與標(biāo)準(zhǔn)互感器的二次電流差一般采用互感器校驗(yàn)儀進(jìn)行量。直接從互感器校驗(yàn)儀上讀出比值差fx(%)，相位差δx(’)。由于互感器校驗(yàn)儀測的是被測互感器與標(biāo)準(zhǔn)互感器電流差與二次電流的比值，所以對互感器校驗(yàn)儀的要求不高。要能校驗(yàn)什么等級的互感器，基本由標(biāo)準(zhǔn)互感器決定。標(biāo)準(zhǔn)互感器是互感器校驗(yàn)系統(tǒng)的關(guān)鍵**。對被測互感器進(jìn)行校驗(yàn)，除了標(biāo)準(zhǔn)互感器、互感器校驗(yàn)儀還要有給互感器提供一次電流的升流器，可以調(diào)節(jié)升流器電流的調(diào)壓器，及負(fù)載。[10]注意事項電流互感器-使用注意事項電流互感器[11]運(yùn)行時，副邊不允許開路。因?yàn)橐坏╅_路，原邊電流均成為勵磁電流，使磁通和副邊電壓**超過正常值而危及人身和設(shè)備安全。因此，電流互感器副邊回路中不許接熔斷器，也不允許在運(yùn)行時未經(jīng)旁路就拆下電流表、繼電器等設(shè)備。電流互感器運(yùn)行時，副邊不允許開路。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 100*70II電流互感器.上海上海二工電流互感器貨源充足</p><p style="text-indent:25px">上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 30II電流互感器.上海上海二工電流互感器貨源充足</p><p> 上海喆和定制銷售西門子APT原廠電流互感器，交貨快，款式種類多，個性化定制等。 </p> <p> <p> 1 概述 </p> <p> 1.1 主要用途 </p> <p> ALH-0.66 系列電流互感器采用**度外殼全封閉結(jié)構(gòu)。當(dāng)一次側(cè)穿芯匝數(shù)為 1時，中心孔以穿母線為主，也可以穿電纜；中心孔穿 </p> <p> 軟質(zhì)電纜時，需根據(jù)型號標(biāo)明的一次側(cè)匝數(shù)穿芯。本產(chǎn)品為測量用互感器，一般配合測量儀表使用，用來顯示被測電路的工作電流。也可 </p> <p> 用于控制、保護(hù)電路等場所。 P1、P2表示一次極性端， S1、S2表示二次極性端。 P1、S1及P2、S2為同名端（減極性）。 </p> <p> <p> 安全使用和注意事項 </p> <p> 1) 嚴(yán)格按照銘牌上額定功率、額定變比、準(zhǔn)確度等級使用本產(chǎn)品； </p> <p> 2) 二次接線端子 S1、S2不得開路，且負(fù)載接線保證接觸良好，以免互感器產(chǎn)生高電壓危及設(shè)備和人身安全； </p> <p> S1、S2應(yīng)有一端可靠接地，以防止一二次間絕緣擊穿； </p> <p> 3) 二次回路連接導(dǎo)線應(yīng)采用足夠容量且中間無接頭的銅芯絕緣線； </p> <p> 4）二次繞組回路中所串入儀表的阻抗不應(yīng)超過相關(guān)技術(shù)標(biāo)準(zhǔn)的規(guī)定； </p> <p> 5）應(yīng)避免繼電保護(hù)用互感器和電能計量用電流互感器并用。 </p> </p> 上海上海二工電流互感器貨源充足</p><p style="text-indent:25px">上海喆和機(jī)電科技有限公司是一家從事機(jī)電科技領(lǐng)域內(nèi)的技術(shù)開發(fā)、技術(shù)咨詢、技術(shù)服務(wù)、技術(shù)轉(zhuǎn)讓,機(jī)電設(shè)備、五金交電、儀器儀表、電子產(chǎn)品、電子元器件、通訊設(shè)備(除衛(wèi)星電視廣播地面接收設(shè)施)、五金工具、橡塑制品、陶瓷制品、金屬材料、五金制品、包裝材料、建筑裝潢材料、化工原料及產(chǎn)品(除危險化學(xué)品、監(jiān)控化學(xué)品、民用物品、易制毒化學(xué)品)、管道及配件、閥門的批發(fā)、零售?！疽婪毥?jīng)批準(zhǔn)的項目,經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠實(shí)可信的企業(yè)。上海喆和機(jī)電科作為從事機(jī)電科技領(lǐng)域內(nèi)的技術(shù)開發(fā)、技術(shù)咨詢、技術(shù)服務(wù)、技術(shù)轉(zhuǎn)讓,機(jī)電設(shè)備、五金交電、儀器儀表、電子產(chǎn)品、電子元器件、通訊設(shè)備(除衛(wèi)星電視廣播地面接收設(shè)施)、五金工具、橡塑制品、陶瓷制品、金屬材料、五金制品、包裝材料、建筑裝潢材料、化工原料及產(chǎn)品(除危險化學(xué)品、監(jiān)控化學(xué)品、民用物品、易制毒化學(xué)品)、管道及配件、閥門的批發(fā)、零售?！疽婪毥?jīng)批準(zhǔn)的項目,經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】的企業(yè)之一，為客戶提供良好的編程控制器，光電傳感器，變頻器，軟啟動器。上海喆和機(jī)電科繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。上海喆和機(jī)電科創(chuàng)始人李小雅，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br 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