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class="home-main container clearfix"><div id="urieah2" class="twoCol"><div id="vmnzghl" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://www.cdcfah.com/cp/second-dgdq_gkxtjzbyb/">工控系統(tǒng)及裝備</a>?<a href="http://www.cdcfah.com/cp/third-gkxtjzbyb_plcod/">PLC</a>?上海上海二工電流互感器源頭好貨歡迎咨詢上海喆和機(jī)電科技供應(yīng)</p><div id="nly72yn" class="leftbox clearfix"><h1>上海上海二工電流互感器源頭好貨歡迎咨詢上海喆和機(jī)電科技供應(yīng)</h1><div id="usua2yp" class="proBig"><div id="2pzbepg" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167636099732514/6371676360997325149233996.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ex3wioa" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167636099732514/6371676360997325149233996.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8ab8k3m" 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>上海上海二工電流互感器源頭好貨,電流互感器</p><p><span>***更新：</span>2020-10-21 08:02:58</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="8b8bsdx" 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="mugcopb" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8a9tevm" class="box"><p><p> 上海喆和供應(yīng)西門子電流互感器。 </p> <p> <br /> </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。 </p> <p> 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，上海上海二工電流互感器源頭好貨、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。折疊編輯本段運(yùn)行特性在電工手冊(cè)及各類教材中，對(duì)電流互感器二次開路運(yùn)行的結(jié)論是：“電流互感器二次開路產(chǎn)生幾百伏，上海上海二工電流互感器源頭好貨、lkV～10kV的危及人身安全的高壓；鐵芯嚴(yán)重發(fā)熱，燒壞電流互感器?！边@也是電力界公認(rèn)的法規(guī)。 </p> <p> 我們科技服務(wù)小組在檢修學(xué)校配電盤的一只無示數(shù)電流表時(shí)發(fā)現(xiàn)，上海上海二工電流互感器源頭好貨，與其相串聯(lián)電流互感器二次開路運(yùn)行，實(shí)測(cè)電壓為2.6V，恢復(fù)其原閉路接法，同時(shí)在主回路串入型號(hào)、變化相同的電流互感器，二次開路長(zhǎng)期運(yùn)行，并不發(fā)熱。這說明：目前實(shí)際應(yīng)用的電流互感器運(yùn)行特性與一百多年來傳統(tǒng)的結(jié)論相比，有著不容忽視的重大差別。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 100*80II電流互感器.上海上海二工電流互感器源頭好貨</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源頭好貨,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167636099732514/6371676360997325149233996.png"></div><p> 電流互感器二次開路電壓特性 </p> <p> 對(duì)每一種電流互感器，二次開路電壓隨著一次電流的變化，都有嚴(yán)格的對(duì)應(yīng)關(guān)系，*以一次額定電流時(shí)的二次開路電壓值說明。對(duì)母線穿心式150／5的電流互感器，當(dāng)穿心電流為額定值時(shí)，不同品種的電流互感器二次開路電壓為2．6～2；4V。80條二次開路電壓特性曲線的規(guī)律是：一次穿心電流從0A增至150A時(shí)，二次開路電壓開始上升幅度很大，30A以后增加甚小(即使從150A增至800A，二次開路電壓平均只上升0．2V)。 </p> <p> 母線穿心式200/5的電流互感器，二次開路電壓是3．9～6．5V；母線穿心式 300／5—2000／5的電流互感器，二次開路電壓為6．5～37．2V。 </p> <p> LQG系列從30／5—600／5的電流互感器，二次開路電壓是12．8～21．4V。 </p> <p> 變電站用的LQJ，LFC，LFCD系列50／5～300／5的電流互感器，二次開路電壓是18～121．3V。 </p> <p> 在第二次伏安特實(shí)驗(yàn)臺(tái)上，利用調(diào)壓器、電流表、導(dǎo)線將所有的電流互感器二次線圈分別接人調(diào)壓器的輸出端，當(dāng)二次輸入5A電流時(shí)，測(cè)得二次電壓和一次加額定電流時(shí)測(cè)得的二次開路電壓都有嚴(yán)格的對(duì)應(yīng)關(guān)系。若用公式計(jì)算，二次開路電壓等于二次閉路轉(zhuǎn)為開路一次電壓的增量乘以變化。從正反兩方面實(shí)驗(yàn)和法拉第電磁感應(yīng)定律推導(dǎo)結(jié)論證明了二次開路電壓測(cè)試值的真實(shí)性上海上海二工電流互感器源頭好貨上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 80*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源頭好貨,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088041488527/6371670880414885276367966.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(hào) ALH-0.66 80*50II 750/5ML </p> <p> 型號(hào) ALH-0.66 30II 50/1 </p> <p> 型號(hào) ALH-0.66 30II 25/5 </p> <p> 型號(hào) ALH-0.66 30II 100/1 </p> <p> 型號(hào) ALH-0.66 30II 60/1 </p> <p> 型號(hào) ALH-0.66 30II 30/5 </p> <p> 型號(hào) ALH-0.66 30II 75/1 </p> <p> 型號(hào) ALH-0.66 30II 40/5 </p> <p> 型號(hào) ALH-0.66 30I-I 300/5ML </p> <p> 型號(hào) ALH-0.66 30I 250/50.2R2.5V </p> <p> 型號(hào) ALH-0.66 40II 75/5ML </p> <p> 型號(hào) ALH-0.66 30I 600/5 </p> <p> 型號(hào) ALH-0.66 30I-I 250/5ML </p> <p> 型號(hào) ALH-0.66 D12 40/1 </p> <p> 型號(hào) ALH-0.66 40II 40/5 </p> <p> 型號(hào) ALH-0.66 M8-II 80/5 </p> <p> 型號(hào) ALH-0.66 D22 600/5 </p> <p> 型號(hào) ALH-0.66 80I 1250/5 </p> <p> 型號(hào) ALH-0.66 100*50II 500/1 </p> <p> 型號(hào) ALH-0.66 60II 3000/5 </p> <p> 型號(hào) ALH-0.66 30I 45/1 </p> <p> 型號(hào) ALH-0.66 50III 250/5 </p> <p> 型號(hào) ALH-0.66 60I 1250/5 </p> <p> 型號(hào) ALH-0.66 40II 20/5 </p> <p> 型號(hào) ALH-0.66 M8-I 120/5 </p> <p> 型號(hào) ALH-0.66 40I 300/5ML </p> <p> 型號(hào) ALH-0.66 80I 700/5 </p> <p> 型號(hào) ALH-0.66 80II 1500/5 0.2SR 20VA 1T 0VA 1T </p> <p> 型號(hào) ALH-0.66 80I 1000/5 0.2SR 10VA 1T 0VA 1T </p> <p> 型號(hào) ALH-0.66 30I 80/5ML </p> <p> 型號(hào) ALH-0.66 60I 2000/1 </p> <p> 型號(hào) ALH-0.66 D8-I 10/5 </p> <p> 型號(hào) ALH-0.66 40I 120/5 </p> <p> 型號(hào) ALH-0.66 100*50II 1600/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 200/51R10VA1T </p> <p> 型號(hào) ALH-0.66 40I 500/5ML </p> <p> 型號(hào) ALH-0.66 100*85II 4000/5 </p> <p> 型號(hào) ALH-0.66 80II 1200/10.5R10VA 690V ML VA ML </p> <p> 型號(hào) ALH-0.66 30I-I 200/1 </p> <p> 型號(hào) ALH-0.66 50II 1000/5 0.5R </p> <p> 型號(hào) ALH-0.66 170*50II 5000/5 </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(cè)電路串聯(lián)，而二次繞阻則與所有儀表負(fù)載電流互感器串聯(lián)2）按被測(cè)電流大小，選擇合適的變比，否則誤差將增大。同時(shí)，二次側(cè)一端必須接地，以防絕緣一旦損壞時(shí)，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(yán)重乃至燒毀線圈；同時(shí)，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(shí)，二次側(cè)與測(cè)量?jī)x表和繼電器等電流線圈串聯(lián)使用，測(cè)量?jī)x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(shì)，是平衡一次電流的磁勢(shì)的。若突然使其開路，則勵(lì)磁電動(dòng)勢(shì)由數(shù)值很小的值驟變?yōu)楹艽蟮闹?，鐵芯中的磁通呈現(xiàn)嚴(yán)重飽和的平頂波，因此二次側(cè)繞組將在磁通過零時(shí)感應(yīng)出很高的尖頂波，其值可達(dá)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(dá)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(fù)載，然后。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.</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源頭好貨,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087771928659/6371670877719286596119342.png"></div><p> 上海喆和銷售西門子電流互感器ALH-0.66系列 </p> <p> 測(cè)量用電流互感器的精度等級(jí)±1%，另外還有。保護(hù)用電流互感器的精度等級(jí)5P/10P，10P標(biāo)示復(fù)合誤差不超過10%。折疊保護(hù)用電流互感器保護(hù)用電流互感器主要與繼電裝置配合，在線路發(fā)生短路過載等故障時(shí)，向繼電裝置提供信號(hào)切斷故障電路，以保護(hù)供電系統(tǒng)的安全。保護(hù)用微型電流互感器的工作條件與測(cè)量用互感器完全不同，保護(hù)用互感器只是在比正常電流大幾倍幾十倍的電流時(shí)才開始有效的工作。保護(hù)用互感器主要要求：1.絕緣可靠，2.足夠大的準(zhǔn)確限值系數(shù)，3.足夠的熱穩(wěn)定性和動(dòng)穩(wěn)定性。保護(hù)用互感器在額定負(fù)荷下能夠滿足準(zhǔn)確級(jí)的要求比較大一次電流叫額定準(zhǔn)確限值一次電流。準(zhǔn)確限值系數(shù)就是額定準(zhǔn)確限值一次電流與額定一次電流比。當(dāng)一次電流足夠大時(shí)鐵芯就會(huì)飽和起不到反映一次電流的作用，準(zhǔn)確限值系數(shù)就是表示這種特性。保護(hù)用互感器準(zhǔn)確等級(jí)5P、10P，表示在額定準(zhǔn)確限值一次電流時(shí)的允許誤差5%、10%線路發(fā)生故障時(shí)的沖擊電流產(chǎn)生熱和電磁力，保護(hù)用電流互感器必須承受。二次繞組短路情況下，電流互感器在一秒內(nèi)能承受而無損傷的一次電流有效值，稱額定短時(shí)熱電流。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 120III-P電流互感器.上海銷售西門子電流互感器報(bào)價(jià)</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 50III電流互感器.上海上海二工電流互感器源頭好貨</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1次側(cè)只有1到幾匝，導(dǎo)線截面積大，串入被測(cè)電路。2次側(cè)匝數(shù)多，導(dǎo)線細(xì)，與阻抗較小的儀表(電流表/功率表的電流線圈）構(gòu)成閉路。電流互感器的運(yùn)行情況相當(dāng)于2次側(cè)短路的變壓器，忽略勵(lì)磁電流，安匝數(shù)相等I1N1=I2N2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I1/I2=N2/N1=k。勵(lì)磁電流是誤差的主要根源。測(cè)量用電流互感器的精度等級(jí)0.2/0.5/1/3,1表示變比誤差不超過±1%，另外還有0.2S和0.5S級(jí)。2、保護(hù)用電流互感器保護(hù)用電流互感器分為：1.過負(fù)荷保護(hù)電流互感器，2.差動(dòng)保護(hù)電流互感器，3.接地保護(hù)電流互感器（零序電流互感器）保護(hù)用電流互感器主要與繼電裝置配合，在線路發(fā)生短路過載等故障時(shí)，向繼電裝置提供信號(hào)切斷故障電路，以保護(hù)供電系統(tǒng)的安全。保護(hù)用電流互感器的工作條件與測(cè)量用電流保護(hù)用電流互感器互感器完全不同，保護(hù)用互感器只是在比正常電流大幾倍幾十倍的電流時(shí)才開始有效的工作。保護(hù)用互感器主要要求：1.絕緣可靠，2.足夠大的準(zhǔn)確限值系數(shù)，3.足夠的熱穩(wěn)定性和動(dòng)穩(wěn)定性。上海上海二工電流互感器源頭好貨</p><p style="text-indent:25px">上海喆和機(jī)電科技有限公司總部位于上海市靜安區(qū)恒豐北路100號(hào)，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(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)后方可開展經(jīng)營(yíng)活動(dòng)】的公司。上海喆和機(jī)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(dòng)器。上海喆和機(jī)電科始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。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 /><p>文章來源地址: http://www.cdcfah.com/cp/1643190.html</p></div></div></div></div></div><div id="k7gklrt" class="page-right twoColRt"><div id="wrnjvw8" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="e3bstfh" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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