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href="http://www.cdcfah.com/cp/third-gkxtjzbyb_plcod/">PLC</a>?上海銷售西門子電流互感器信息推薦歡迎來電上海喆和機(jī)電科技供應(yīng)</p><div id="t8g32ie" class="leftbox clearfix"><h1>上海銷售西門子電流互感器信息推薦歡迎來電上海喆和機(jī)電科技供應(yīng)</h1><div id="f3eqcyk" class="proBig"><div id="ocel8s7" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088041488527/6371670880414885276367966.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mz2zzbi" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088041488527/6371670880414885276367966.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7ub7xja" 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>上海銷售西門子電流互感器信息推薦,電流互感器</p><p><span>***更新：</span>2020-12-20 05:02:06</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="bz7ykbs" 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="m8qxjqh" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="fovr3os" class="box"><p><p> 上海喆和定制銷售西門子電流互感器。主要技術(shù)要求額定容量：額定二次電流通過二次額定負(fù)荷時(shí)所消耗的視在功率。額定容量可以用視在功率，也可以用二次額定負(fù)荷阻抗Ω表示。一次額定電流：允許通過電流互感器一次繞組的用電負(fù)荷電流。用于電力系統(tǒng)的電流互感器一次額定電流為5～25000A，用于試驗(yàn)設(shè)備的精密電流互感器為～50000A。電流互感器可在一次額定電流下長期運(yùn)行，負(fù)荷電流超過額定電流值時(shí)叫做過負(fù)荷，電流互感器長期過負(fù)荷運(yùn)行，會燒壞繞組或減少使用壽命。二次額定電流：允許通過電流互感器二次繞組的一次感應(yīng)電流。額定電流比（變比）：一次額定電流與二次額定電流之比。額定電壓：一次繞組長期對地能夠承受的額定電壓（有效值以kV為單位），應(yīng)不低于所接線路的額定相電壓。電流互感器的額定電壓分為，3，6，10，35，上海銷售西門子電流互感器信息推薦，110，220，330，500kV等幾種電壓等級。10%倍數(shù)：在指定的二次負(fù)荷和任意功率因數(shù)下，電流互感器的電流誤差為－10%時(shí)，上海銷售西門子電流互感器信息推薦，一次電流對其額定值的倍數(shù)。10%倍數(shù)是與繼電保護(hù)有關(guān)的技術(shù)指標(biāo)。準(zhǔn)確度等級：表示互感器本身誤差（比差和角差）的等級，上海銷售西門子電流互感器信息推薦。電流互感器的準(zhǔn)確度等級分為～1多種級別，與原來相比準(zhǔn)確度提高很大。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 120*50II電流互感器.上海銷售西門子電流互感器信息推薦</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海銷售西門子電流互感器信息推薦,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088041488527/6371670880414885276367966.png"></div><p> 西門子APT電流互感器上海喆和供，電流互感器原理是依據(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(hù)回路中，電流互感器在工作時(shí)，它的二次側(cè)回路始終是閉合的，因此測量儀表和保護(hù)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)小電流來使用，二次側(cè)不可開路。 </p> <p> 西門子APT電流互感器上海喆和供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(hù)回路中，電流互感器在工作時(shí)，它的2次回路始終是閉合的，因此測量儀表和保護(hù)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> 西門子APT電流互感器上海喆和供電流互感器的作用是可以把數(shù)值較大的一次電流通過一定的變比轉(zhuǎn)換為數(shù)值較小的二次電流，用來進(jìn)行保護(hù)、測量等用途。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。上海銷售西門子電流互感器信息推薦上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 D8-II電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海銷售西門子電流互感器信息推薦,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087973056246/6371670879730562466968566.png"></div><p> 上海喆和定制西門子電流互感器 ALH-0.66系列。 </p> <p> 準(zhǔn)確級選擇的原則：計(jì)費(fèi)計(jì)量用的電流互感器其準(zhǔn)確級不低于0．5級；用于監(jiān)視各進(jìn)出線回路中負(fù)荷電流大小的電流表應(yīng)選用1．0—3．0級電流互感器。為了保證準(zhǔn)確度誤差不超過規(guī)定值，一般還校驗(yàn)電流互感器二次負(fù)荷（伏安），互感器二次負(fù)荷S2不大于額定負(fù)荷S2n，所選準(zhǔn)確度才能得到保證。準(zhǔn)確度校驗(yàn)公式：S2≤S2n。二次回路的負(fù)荷l：取決于二次回路的阻抗Z2的值，則：S2=I2n2︱Z2︱≈I2n2（∑︱Zi︱+ RWl+RXC）或S2V1≈∑Si+I2n2（RWl+RXC）式中，Si、Zi為二次回路中的儀表、繼電器線圈的額定負(fù)荷和阻抗，RXC為二次回路中所有接頭、觸點(diǎn)的接觸電阻，一般取0．1Ω，RWL為二次回路導(dǎo)線電阻，計(jì)算公式化為：RWL=LC/（r×S）。式中，r為導(dǎo)線的導(dǎo)電率，銅線r=53m/（Ωmm2），鋁線r=32m（Ωmm2），S為導(dǎo)線截面積（mm2），LC為導(dǎo)線的計(jì)算長度（m）。設(shè)互感器到儀表單向長度為L1，則：L1互感器為星形接LC=L1兩相V形接線2L1一相式接線繼電保護(hù)用的電流互感器的準(zhǔn)確度常用的有5P和l0P。保護(hù)級的準(zhǔn)確度是以額定準(zhǔn)確限值一次電流下的電流互感器額定復(fù)合誤差ε%來標(biāo)稱的（如5P對應(yīng)的ε%=5%）。 </p><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 D15-II電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海銷售西門子電流互感器信息推薦,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087626920413/6371670876269204131239849.png"></div><p> 對于沒有采取補(bǔ)償措施的電流互感器，比差為負(fù)值，角差為正值，比差的***值和角差均隨電流增大而減小。采用補(bǔ)償?shù)霓k法可以減小互感器的誤差。一般通過在互感器上加繞附加繞組或增添附加鐵心，以及接入相應(yīng)的電阻、電感、電容元件來補(bǔ)償。常用的補(bǔ)償法有匝數(shù)補(bǔ)償、分?jǐn)?shù)匝補(bǔ)償、小鐵心補(bǔ)償、并聯(lián)電容補(bǔ)償?shù)取Ｐｒ?yàn)方法在進(jìn)行電流互感器誤差試驗(yàn)之前，通常需要檢查極性和退磁等試驗(yàn)。極性檢查電流互感器一次繞組標(biāo)志為P1、P2，二次繞組標(biāo)志為S1、S2。若P1、S1是同名端，則這種標(biāo)志叫減極性。一次電流從P1進(jìn)，二次電流從S1出。極性檢查很簡單，除了可以在互感器校驗(yàn)儀上進(jìn)行檢查外，還可以使用直流檢查法。退磁檢查電流互感器在電流突然下降的情況下，互感器鐵芯可能產(chǎn)生剩磁。如電流互感器在大電流情況下突然切斷電源、二次繞組突然開路等。互感器鐵芯有剩磁，使鐵芯磁導(dǎo)率下降，影響互感器性能。長期使用后的互感器都應(yīng)該退磁?；ジ衅鳈z驗(yàn)前也要退磁。退磁就是通過一次或二次繞組以交變的勵磁電流，給鐵芯以交變的磁場。從0開始逐漸加大交變的磁場(勵磁電流)使鐵芯達(dá)到飽和狀態(tài)，然后再慢慢減小勵磁電流到零，以消除剩磁。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 80III電流互感器.上海銷售西門子電流互感器信息推薦</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 30I電流互感器.上海銷售西門子電流互感器信息推薦</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(hù)回路中，電流互感器在工作時(shí)，它的二次回路始終是閉合的，因此測量儀表和保護(hù)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(hù)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(xiǎn)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(shí)驗(yàn)室使用的多電流比精密電流互感器，一般用于擴(kuò)大儀表量程。）上海銷售西門子電流互感器信息推薦</p><p style="text-indent:25px">上海喆和機(jī)電科技有限公司是一家有著雄厚實(shí)力背景、信譽(yù)可靠、勵精圖治、展望未來、有夢想有目標(biāo)，有組織有體系的公司，堅(jiān)持于帶領(lǐng)員工在未來的道路上大放光明，攜手共畫藍(lán)圖，在上海市市轄區(qū)等地區(qū)的電工電氣行業(yè)中積累了大批忠誠的客戶粉絲源，也收獲了良好的用戶口碑，為公司的發(fā)展奠定的良好的行業(yè)基礎(chǔ)，也希望未來公司能成為*****，努力為行業(yè)領(lǐng)域的發(fā)展奉獻(xiàn)出自己的一份力量，我們相信精益求精的工作態(tài)度和不斷的完善創(chuàng)新理念以及自強(qiáng)不息，斗志昂揚(yáng)的的企業(yè)精神將** 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