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href="http://www.cdcfah.com/cp/third-gkxtjzbyb_plcod/">PLC</a>?上海直銷電流互感器產(chǎn)品介紹歡迎來(lái)電上海喆和機(jī)電科技供應(yīng)</p><div id="2vctija" class="leftbox clearfix"><h1>上海直銷電流互感器產(chǎn)品介紹歡迎來(lái)電上海喆和機(jī)電科技供應(yīng)</h1><div id="aumoitv" class="proBig"><div id="t7da2ik" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088129589451/6371670881295894516977483.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="tnkrlm3" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088129589451/6371670881295894516977483.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rk2ji7i" 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>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>上海直銷電流互感器產(chǎn)品介紹,電流互感器</p><p><span>***更新：</span>2020-09-12 08:01:16</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="cqnuw2w" 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(hào)</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="eiurdkh" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="bfhovxe" class="box"><p><p> 由于一次繞組與二次繞組有相等的安培匝數(shù)，I1N1=I2N2，電流互感器額定電流比：。電流互感器實(shí)際運(yùn)行中負(fù)荷阻抗很小，二次繞組接近于短路狀態(tài)，相當(dāng)于一個(gè)短路運(yùn)行的變壓器。2、電流互感器的接線原則(1)電流互感器二次側(cè)不允許開(kāi)路。二次開(kāi)路可能產(chǎn)生嚴(yán)重后果，一是鐵芯過(guò)熱，甚至燒毀互感器;二是由于二次繞組匝數(shù)很多，會(huì)感應(yīng)出危險(xiǎn)的高電壓，危及人身和設(shè)備的安全。(2)高壓電流互感器的二次側(cè)必須有一點(diǎn)接地。由于高壓電流互感器的一次側(cè)為高壓，當(dāng)一、二次線圈之間因絕緣損壞出線高壓擊穿時(shí)，將導(dǎo)致高壓進(jìn)入低壓，如果二次線圈一點(diǎn)接地，則將高壓引入了大地，可確保人身及設(shè)備的安全。但應(yīng)當(dāng)注意，電流互感器的二次回路只允許一點(diǎn)接地，而不允許再有接地，上海直銷電流互感器產(chǎn)品介紹，否則有可能引起分流，影響使用。低壓電流互感器的二次線圈不應(yīng)該接地。由于低壓互感器的電壓較低，一、二次線圈間的絕緣欲度大，發(fā)生一、二次線圈擊穿的可能性小，另外，上海直銷電流互感器產(chǎn)品介紹，二次線圈的不接地將使二次回路及儀表的絕緣能力提高，還可使雷擊燒毀儀表***減少，上海直銷電流互感器產(chǎn)品介紹。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 60I電流互感器.上海直銷電流互感器產(chǎn)品介紹</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海直銷電流互感器產(chǎn)品介紹,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088129589451/6371670881295894516977483.png"></div><p> 上海喆和定制銷售西門子電流互感器。電流互感器與變壓器類似也是根據(jù)電磁感應(yīng)原理工作，變壓器變換的是電壓而電流互感器變換的是電流罷了。電流互感器接被測(cè)電流的繞組（匝數(shù)為N1），稱為一次繞組（或原邊繞組、初級(jí)繞組）；接測(cè)量?jī)x表的繞組（匝數(shù)為N2）稱為二次繞組（或副邊繞組、次級(jí)繞組）。電流互感器一次繞組電流I1與二次繞組I2的電流比，叫實(shí)際電流比K。電流互感器在額定電流下工作時(shí)的電流比叫電流互感器額定電流比，用Kn表示。Kn=I1n/I2n電流互感器（Currenttransformer簡(jiǎn)稱CT）的作用是可以把數(shù)值較大的一次電流通過(guò)一定的變比轉(zhuǎn)換為數(shù)值較小的二次電流，用來(lái)進(jìn)行保護(hù)、測(cè)量等用途。如變比為400/5的電流互感器，可以把實(shí)際為400A的電流轉(zhuǎn)變?yōu)?A的電流。一、電流互感器型號(hào)[3]：***字母：L—電流互感器第二字母：A—穿墻式；Z—支柱式；M—母線式；D—單匝貫穿式；V—結(jié)構(gòu)倒置式；J—零序接地檢測(cè)用；W—抗污穢；R—繞組裸露式第三字母：Z—環(huán)氧樹(shù)脂澆注式；C—瓷絕緣；Q—?dú)怏w絕緣介質(zhì)；W—與微機(jī)保護(hù)**第四字母：B—帶保護(hù)級(jí)；C—差動(dòng)保護(hù)；D—D級(jí)；Q—加強(qiáng)型。上海直銷電流互感器產(chǎn)品介紹上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 80*60II-P電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海直銷電流互感器產(chǎn)品介紹,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(kāi)路電壓波形分析 </p> <p> 當(dāng)一次電流為0A時(shí)，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(hào)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(guó)計(jì)量電流時(shí)，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(zhǎng)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(shí)，當(dāng)一次穿心電流為150A時(shí)，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(tái)上測(cè)得8000個(gè)數(shù)據(jù)表明，當(dāng)一次電流超過(guò)額定值10％，隨著一次電流增大，正比差越來(lái)越明顯，而一次電流為15A以下時(shí)，電流互感器二次測(cè)中的電流表示數(shù)有負(fù)比差。 </p><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(duì)電流互感器進(jìn)行檢修時(shí)發(fā)現(xiàn)，即使互感器的二次線圈開(kāi)路運(yùn)行，也不會(huì)造成設(shè)備損害。這一現(xiàn)象與傳統(tǒng)的電工手冊(cè)及各類教材所提出的電流互感器二次開(kāi)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(wèn)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(kāi)路狀態(tài)工作時(shí)，一般不會(huì)過(guò)熱；只有極少數(shù)型號(hào)功耗增大，發(fā)熱嚴(yán)重，但在正常工作電流下，也不會(huì)燒壞設(shè)備。至于二次開(kāi)路電壓，則始終在低壓范圍內(nèi)波動(dòng)。上海喆和在對(duì)數(shù)十種型號(hào)的電流互感器進(jìn)行實(shí)驗(yàn)測(cè)定的基礎(chǔ)上，得出結(jié)論，二次開(kāi)路時(shí)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(dòng)控制功率型信號(hào)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(dòng)化控制設(shè)計(jì)，產(chǎn)生良好的經(jīng)濟(jì)效益和社會(huì)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(jī)。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 130*65II電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海直銷電流互感器產(chǎn)品介紹,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087771928659/6371670877719286596119342.png"></div><p> 上海喆和定制銷售西門子電流互感器。按絕緣介質(zhì)分類1、干式電流互感器[4]：由普通絕緣材料經(jīng)浸漆處理作為絕緣。2、澆注式電流互感器：用環(huán)氧樹(shù)脂或其他樹(shù)脂混合材料澆注成型的電流互感器。3、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。4、氣體絕緣電流互感器：主絕緣由氣體構(gòu)成。按安裝方式分類1、貫穿式電流互感器[5]：用來(lái)穿過(guò)屏板或墻壁的電流互感器。2、支柱式電流互感器：安裝在平面或支柱上，兼做一次電路導(dǎo)體支柱用的電流互感器。3、套管式電流互感器：沒(méi)有一次導(dǎo)體和一次絕緣，直接套裝在絕緣的套管上的一種電流互感器。4：母線式電流互感器：沒(méi)有一次導(dǎo)體但有一次絕緣，直接套裝在母線上使用的一種電流互感器。按原理分類1、電磁式電流互感器根據(jù)電磁感應(yīng)原理實(shí)現(xiàn)電流變換的電流互感器。2、電子式電流互感器[6]例如（1）光學(xué)電流互感器是指采用光學(xué)器件作被測(cè)電流傳感器，光學(xué)器件由光學(xué)玻璃、全光纖等構(gòu)成。（2）空心線圈電流互感器。又稱為Rogowski線圈式電流互感器。空心線圈往往由漆包線均勻繞制在環(huán)形骨架上制成，骨架采用塑料、陶瓷等非鐵磁材料，其相對(duì)磁導(dǎo)率與空氣的相對(duì)磁導(dǎo)率相同。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 D15-II電流互感器.上海二工電流互感器ALH-0.66 80III</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 D15-I電流互感器.上海直銷電流互感器產(chǎn)品介紹</p><p> 被測(cè)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(cè)的是被測(cè)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(duì)互感器校驗(yàn)儀的要求不高。要能校驗(yàn)什么等級(jí)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(duì)被測(cè)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(xiàng)電流互感器-使用注意事項(xiàng)電流互感器[11]運(yùn)行時(shí)，副邊不允許開(kāi)路。因?yàn)橐坏╅_(kāi)路，原邊電流均成為勵(lì)磁電流，使磁通和副邊電壓**超過(guò)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(shí)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(shí)，副邊不允許開(kāi)路。上海直銷電流互感器產(chǎn)品介紹</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(kāi)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(xiǎn)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。【依法須經(jīng)批準(zhǔn)的項(xiàng)目,經(jīng)相關(guān)部門批準(zhǔn)后方可開(kāi)展經(jīng)營(yíng)活動(dòng)】的公司，致力于發(fā)展為創(chuàng)新務(wù)實(shí)、誠(chéng)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(kāi)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(xiǎn)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(xiàng)目,經(jīng)相關(guān)部門批準(zhǔn)后方可開(kāi)展經(jīng)營(yíng)活動(dòng)】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(dòng)器。上海喆和機(jī)電科繼續(xù)堅(jiān)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(zhǎng)，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)電科始終關(guān)注電工電氣市場(chǎng)，以敏銳的市場(chǎng)洞察力，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br 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