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clearfix"><h1>上海二工電流互感器貨期短歡迎來電上海喆和機電科技供應(yīng)</h1><div id="b2gi73v" class="proBig"><div id="sry9jql" 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="a82uw7h" 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="tdf4q8w" 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>上海二工電流互感器貨期短,電流互感器</p><p><span>***更新：</span>2020-10-23 06:02:49</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="po7pbnz" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海喆和機電科技有限公司</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: </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="jiuosjv" class="page-proshow02"><p class="title">詳細說明</p><div id="nhosofw" class="box"><p><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)氧樹脂或其他樹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]：用來穿過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，上海二工電流互感器貨期短。3、套管式電流互感器：沒有一次導(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：沒有一次導(dǎo)體但有一次絕緣，上海二工電流互感器貨期短，上海二工電流互感器貨期短，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，其相對磁導(dǎo)率與空氣的相對磁導(dǎo)率相同。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 120II-P電流互感器.上海二工電流互感器貨期短</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海二工電流互感器貨期短,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088129589451/6371670881295894516977483.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> 在變流實驗臺上測得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)有負比差。上海定制電流互感器哪家專業(yè)上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 120*65II電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海二工電流互感器貨期短,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087771928659/6371670877719286596119342.png"></div><p> 電流互感器使用注意事項(1)極性連接要正確。電流互感器一般按減極性標(biāo)注，如果極性連接不正確，就會影響計量，甚至在同**路有多臺電流互感器并聯(lián)時，全造成短路***。(2)二次回路應(yīng)設(shè)保護性接地點，并可靠連接。為防止一、二次繞組之間絕緣擊穿后高電壓竄入低壓側(cè)危及人身和儀表安全，電流互感器二次側(cè)應(yīng)設(shè)保護性接地點，接地點只允許接一個，一般將靠近電流互感器的箱體端子接地。(3)運行中二次繞組不允許開路。否則會導(dǎo)致以下嚴重后果：二次側(cè)出現(xiàn)高電壓，危及人身和儀表安全;出現(xiàn)過熱，可能燒壞繞組;增大計量誤差。(4)用于電能計量的電流互感器二次回路，不應(yīng)再接繼電保護裝置和自動裝置等，以防互相影響。 </p><p> 使用原則：電流互感器的接線應(yīng)遵守串聯(lián)原則[8]：即一次繞阻應(yīng)與被測電路串聯(lián)，而二次繞阻則與所有儀表負載電流互感器串聯(lián)2）按被測電流大小，選擇合適的變比，否則誤差將增大。同時，二次側(cè)一端必須接地，以防絕緣一旦損壞時，一次側(cè)高壓竄入二次低壓側(cè)，造成人身和設(shè)備***3）二次側(cè)***不允許開路，因一旦開路，一次側(cè)電流I1全部成為磁化電流，引起φm和E2驟增，造成鐵心過度飽和磁化，發(fā)熱嚴重乃至燒毀線圈；同時，磁路過度飽和磁化后，使誤差增大。電流互感器在正常工作時，二次側(cè)與測量儀表和繼電器等電流線圈串聯(lián)使用，測量儀表和繼電器等電流線圈阻抗很小，二次側(cè)近似于短路。CT二次電流的大小由一次電流決定，二次電流產(chǎn)生的磁勢，是平衡一次電流的磁勢的。若突然使其開路，則勵磁電動勢由數(shù)值很小的值驟變?yōu)楹艽蟮闹担F芯中的磁通呈現(xiàn)嚴重飽和的平頂波，因此二次側(cè)繞組將在磁通過零時感應(yīng)出很高的尖頂波，其值可達到數(shù)千甚至上萬伏，危及工作人員的安全及儀表的絕緣性能。另外，二次側(cè)開路使二次側(cè)電壓達幾百伏，一旦觸及將造成觸電***。因此，電流互感器二次側(cè)都備有短路開關(guān)，防止二次側(cè)開路。在使用過程中，二次側(cè)一旦開路應(yīng)馬上撤掉電路負載，然后。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 50II-P電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海二工電流互感器貨期短,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167636099732514/6371676360997325149233996.png"></div><p> 上海喆和銷售西門子APT原廠ALH-0.66電流互感器 </p> <p> 型號 </p> <p> ALH-0.66 30I 300/5ML </p> <p> 型號 </p> <p> ALH-0.66 50II 700/5 </p> <p> 型號 </p> <p> ALH-0.66 40II 900/5ML </p> <p> 型號 </p> <p> ALH-0.66 M8-I 10/1ML </p> <p> 型號 </p> <p> ALH-0.66 30I-I 200/50.2RML </p> <p> 型號 </p> <p> ALH-0.66 220*50II 3000/5 </p> <p> 型號 </p> <p> ALH-0.66 60II 600/1ML </p> <p> 型號 </p> <p> ALH-0.66 30I 160/1ML </p> <p> 型號 </p> <p> ALH-0.66 80*50II 200/51R5VA ML </p> <p> 型號 </p> <p> ALH-0.66 40II 200/5ML </p> <p> 型號 </p> <p> ALH-0.66 30I-I 10/11R1VA ML </p> <p> 型號 </p> <p> ALH-0.66 80*50II 800/50.2RML </p> <p> 型號 </p> <p> ALH-0.66 30I-I 100/51RML </p> <p> 型號 </p> <p> ALH-0.66 60II 200/5ML </p> <p> 型號 </p> <p> ALH-0.66 40II 400/5 0.2R 5VA 1T ML </p> <p> 型號 </p> <p> ALH-0.66 30I-I 300/50.2R2.5VA 1T VA 1T </p> <p> 型號 </p> <p> ALH-0.66 40I 10/5ZZ </p> <p> 型號 </p> <p> ALH-0.66 120*50II 3000/1ML </p> <p> 型號 </p> <p> ALH-0.66 30I-I 5/1ML </p> <p> 型號 </p> <p> ALH-0.66 60II 300/1ML </p> <p> 型號 </p> <p> ALH-0.66 60*50II 1250/1ML </p> <p> 型號 </p> <p> ALH-0.66 30I-I 15/10.5RML </p> <p> 型號 </p> <p> ALH-0.66 30I 100/10.5R5VA </p> <p> 型號 </p> <p> ALH-0.66 30I 40/15VAML </p> <p> 型號 </p> <p> ALH-0.66 100II 1500/1ML </p> <p> 型號 </p> <p> ALH-0.66 80I 150/5 </p> <p> 型號 </p> <p> ALH-0.66 M8-II 10/50.5R </p> <p> 型號 </p> <p> ALH-0.66 50III 750/5 </p> <p> 型號 </p> <p> ALH-0.66 30I-I 30/51T </p> <p> 型號 </p> <p> ALH-0.66 80II 1600/5ML </p> <p> 型號 </p> <p> ALH-0.66 100*50II 4000/1M </p> <p> 型號 </p> <p> ALH-0.66 30I-I 200/1ML </p> <p> 型號 </p> <p> ALH-0.66 100III 2500/5XG </p> <p> 型號 </p> <p> ALH-0.66 80*50II 1000/2.5M </p> <p> 型號 </p> <p> ALH-0.66 50II 1250/5ML </p> <p> 型號 </p> <p> ALH-0.66 30I-I 80/5ML </p> <p> 型號 </p> <p> ALH-0.66 60*50II 600/5ML </p> <p> 型號 </p> <p> ALH-0.66 M8-I 30/1ML 上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 130II-P電流互感器.上海定制電流互感器哪家專業(yè)</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.上海二工電流互感器貨期短</p><p> 上海喆和定制銷售西門子電流互感器ALH-0.66系列。 </p> <p> 電流互感器原理 [2] 是依據(jù)電磁感應(yīng)原理的。電流互感器是由閉合的鐵心和繞組組成。它的一次繞組匝數(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。 </p> <p> 在發(fā)電、變電、輸電、配電和用電的線路中電流大小懸殊，從幾安到幾萬安都有。為便于測量、保護和控制需要轉(zhuǎn)換為比較統(tǒng)一的電流，另外線路上的電壓一般都比較高如直接測量是非常危險的。電流互感器就起到電流變換和電氣隔離作用 [1] 。對于指針式的電流表，電流互感器的二次電流大多數(shù)是安培級的（如5A等）。對于數(shù)字化儀表，采樣的信號一般為毫安級（0-5V、4-20mA等）。微型電流互感器二次電流為毫安級，主要起大互感器與采樣之間的橋梁作用。微型電流互感器也有人稱之為“儀用電流互感器”。（“儀用電流互感器”有一層含義是在實驗室使用的多電流比精密電流互感器，一般用于擴大儀表量程。）上海二工電流互感器貨期短</p><p style="text-indent:25px">上海喆和機電科技有限公司總部位于上海市靜安區(qū)恒豐北路100號，是一家從事機電科技領(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。【依法須經(jīng)批準的項目,經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】的公司。上海喆和機電科深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的編程控制器，光電傳感器，變頻器，軟啟動器。上海喆和機電科繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實現(xiàn)轉(zhuǎn)型再突破。上海喆和機電科始終關(guān)注電工電氣市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1670459.html</p></div></div></div></div></div><div id="7pgaw8g" class="page-right twoColRt"><div id="g2gnu2a" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zjq22m2" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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