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class="proBig"><div id="jy3dikg" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087626920413/6371670876269204131239849.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="m8ld2um" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087626920413/6371670876269204131239849.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8lheb78" 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真價實,電流互感器</p><p><span>***更新：</span>2020-12-08 06:04:38</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="hg2xu2h" 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="mgi8c2t" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="akh3hrd" class="box"><p><p> 對于沒有采取補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，上海二工電流互感器貨真價實、電容元件來補償。常用的補償法有匝數(shù)補償、分?jǐn)?shù)匝補償、小鐵心補償、并聯(lián)電容補償?shù)?。校驗方法在進行電流互感器誤差試驗之前，通常需要檢查極性和退磁等試驗。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，二次電流從S1出。極性檢查很簡單，除了可以在互感器校驗儀上進行檢查外，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?；ジ衅麒F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，上海二工電流互感器貨真價實，給鐵芯以交變的磁場，上海二工電流互感器貨真價實。從0開始逐漸加大交變的磁場(勵磁電流)使鐵芯達到飽和狀態(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 120II-P電流互感器.上海二工電流互感器貨真價實</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真價實,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087626920413/6371670876269204131239849.png"></div><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、計量等裝置提供電網(wǎng)的電流信息。保護用電流互感器（或電流互感器的保護繞組）：在電網(wǎng)故障狀態(tài)下。上海二工電流互感器貨真價實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.</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真價實,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087926902204/6371670879269022048294637.png"></div><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。可以電流互感器這樣判斷，如果電流突然急劇變大，此時表示鐵芯以進入磁飽和階段)。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一般采用被測互感器與標(biāo)準(zhǔn)互感器進行比較，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。 </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 ALH-0.66 100*50II 3000/1ML </p> <p> 型號 ALH-0.66 100II 3000/5ML </p> <p> 型號 ALH-0.66 30I-I 15/5 0.5R 2.5A 8T </p> <p> 型號 ALH-0.66 60*50II 1500/50.5 </p> <p> 型號 ALH-0.66 80II 1250/10.5R15 </p> <p> 型號 ALH-0.66 40II 1000/5ML </p> <p> 型號 ALH-0.66 30I-I 150/110VAM </p> <p> 型號 ALH-0.66 30I-I 30/10.5R5VA </p> <p> 型號 ALH-0.66 80*50II 300/51R5 </p> <p> 型號 ALH-0.66 40I 75/5ZZ </p> <p> 型號 ALH-0.66 30I-I 40/11RML </p> <p> 型號 ALH-0.66 40II 350/5ML </p> <p> 型號 ALH-0.66 30I-I 50/1ML </p> <p> 型號 ALH-0.66 40I 200/5ML </p> <p> 型號 ALH-0.66 30I-I 75/50.5R2.5 </p> <p> 型號 ALH-0.66 40I 350/5 </p> <p> 型號 ALH-0.66 30I-I 250/1ML </p> <p> 型號 ALH-0.66 60II 800/50.2SR5 </p> <p> 型號 ALH-0.66 40II 650/5ML </p> <p> 型號 ALH-0.66 80*50II 1500/1ML </p> <p> 型號 ALH-0.66 60*50II 500/1ML </p> <p> 型號 ALH-0.66 100*50II 3200/5M </p> <p> 型號 ALH-0.66 M8-II 100/5XGZZ </p> <p> 型號 ALH-0.66 40I 40/5 </p> <p> 型號 ALH-0.66 100II I800/5ML </p> <p> 型號 ALH-0.66 80II 1000/5ML </p> <p> 型號 ALH-0.66 M8-I 20/5ML </p> <p> 型號 ALH-0.66 60III 600/5ML </p> <p> 型號 ALH-0.66 50II 600/115VAML </p> <p> 型號 ALH-0.66 30I 160/5ML </p> <p> 型號 ALH-0.66 30I-I 10/1ML </p> <p> 型號 ALH-0.66 60II 1000/5ML </p> <p> 型號 ALH-0.66 80*50II 2500/0.5 </p> <p> 型號 ALH-0.66 60*50II 200/5ML </p> <p> 型號 ALH-0.66 M8-I 40/50.5R </p> <p> 型號 ALH-0.66 60II 500/1ML </p> <p> 型號 ALH-0.66 60I I 1500/5 0.5R 15VA ML </p> <p> 型號 ALH-0.66 40II 300/1 10VA ML 上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 100*50II電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海二工電流互感器貨真價實,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088041488527/6371670880414885276367966.png"></div><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。電流互感器的運行情況相當(dāng)于2次側(cè)短路的變壓器，忽略勵磁電流，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，叫實際電流比I1/I2=N2/N1=k。勵磁電流是誤差的主要根源。測量用電流互感器的精度等級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。2、保護用電流互感器保護用電流互感器分為：1.過負(fù)荷保護電流互感器，2.差動保護電流互感器，3.接地保護電流互感器（零序電流互感器）保護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，向繼電裝置提供信號切斷故障電路，以保護供電系統(tǒng)的安全。保護用電流互感器的工作條件與測量用電流保護用電流互感器互感器完全不同，保護用互感器只是在比正常電流大幾倍幾十倍的電流時才開始有效的工作。保護用互感器主要要求：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)定性和動穩(wěn)定性。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 170*100II-P電流互感器.上海二工電流互感器貨真價實</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 130II電流互感器.上海二工電流互感器貨真價實</p><p style="text-indent:25px">對于保護用電流互感器的裝設(shè)地點應(yīng)按盡量消除主保護裝置的不保護區(qū)來設(shè)置。例如：若有兩組電流互感器，且位置允許時，應(yīng)設(shè)在斷路器兩側(cè)，使斷路器處于交叉保護范圍之中6）為了防止支柱式電流互感器套管閃絡(luò)造成母線故障，電流互感器通常布置在斷路器的出線或變壓器側(cè)7）為了減輕發(fā)電機內(nèi)部故障時的損傷，用于自動調(diào)節(jié)勵磁裝置的電流互感器應(yīng)布置在發(fā)電機定子繞組的出線側(cè)。為了便于分析和在發(fā)電機并入系統(tǒng)前發(fā)現(xiàn)內(nèi)部故障，用于測量儀表的電流互感器宜裝在發(fā)電機中性點側(cè)。接線方式電流互感器的接線方式按其所接負(fù)載的運行要求確定。**常用的接線方式為單相、三相星形和不完全星形三種，分別如圖4a、圖4b和圖4c。電流互感器接線方式額定變比和誤差：電流互感器的額定變比KN指電流互感器的額定電流比。即：KN=I1N/I2N電流互感器原邊電流在一定范圍內(nèi)變動時，一般規(guī)定為10～120%I1N，副邊電流應(yīng)按比例變化，而且原、副邊電壓（或電流）應(yīng)該同相位。但由于互感器存在內(nèi)阻抗、勵磁電流和損耗等因素而使比值及相位出現(xiàn)誤差，分別稱為比差和角差。比差為經(jīng)折算后的二次電流與一次電流量值大小之差對后者之比，即fI 為電流互感器的比差。當(dāng)KNI2>I1時，比差為正，反之為負(fù)。上海二工電流互感器貨真價實</p><p style="text-indent:25px">上海喆和機電科技有限公司致力于電工電氣，以科技創(chuàng)新實現(xiàn)***管理的追求。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。上海喆和機電科致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。上海喆和機電科創(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 /><p>文章來源地址: http://m.cdcfah.com/cp/2314605.html</p></div></div></div></div></div><div id="jyqxzgi" class="page-right twoColRt"><div id="zpbovcj" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dnegs23" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="od7sumt" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img 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