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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>上海定制電流互感器量大從優(yōu),電流互感器</p><p><span>***更新：</span>2020-08-02 01:04:29</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="edv7fp8" 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="eikjfwy" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="pj2tqse" class="box"><p><p style="text-indent:25px"> 上海喆和供應(yīng)西門子APT電流互感器在變流實(shí)驗(yàn)臺(tái)上對(duì)每種電流互感器，一次測(cè)注入額定電流的0．1，0．2，…，1倍的電流。二次以開路和閉路兩種方式運(yùn)行，測(cè)得一次電壓和一次電流，可以求出一次測(cè)在二次開、閉路情況下的阻抗，其數(shù)值很小。例如一次阻抗額定的44號(hào)3015LQG系列電流互感器，當(dāng)一次測(cè)加30A電流，二次開路，一次電壓為3V，則一次阻抗為0．1Ω。在二次閉路條件下，一次電壓為0．5V，一次阻抗為O．017Ω,。其余電流互感器隨變化的增大。一次阻抗變得很小，其中以母線穿心式的電流互感器**小。同理利用二次伏安特性，可以直接求出除母線穿心式電流互感器以外的其他各類電流互感器在一次開路或閉路情況下的二次阻抗。對(duì)母線穿心式電流互感器一次開路情況下，二次阻抗可以直接利用二次伏安法求出。一次閉路情況下的二次阻抗必須加穿心短路環(huán)，所用短路環(huán)是多股細(xì)銅線組成的150mm2以上的單匝或多匝短路環(huán)，在滿足二次輸入安匝近似等于—?次安匝情況下，可求出母線穿心式電流互感器一次閉路情況下的二次阻抗。例如5號(hào)電流互感器，二次注入1～5A電流，一次加150mm2短路環(huán)后，上海定制電流互感器量大從優(yōu)，上海定制電流互感器量大從優(yōu)，上海定制電流互感器量大從優(yōu)，其二次阻抗都是0．19Ω，近似等于銘牌標(biāo)定的負(fù)荷0．2Ω或5VA。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 120*85II電流互感器.上海定制電流互感器量大從優(yōu)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海定制電流互感器量大從優(yōu),電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088129589451/6371670881295894516977483.png"></div><p style="text-indent:25px"> 上海喆和供應(yīng)西門子APT電流互感器。電流互感器接線方式額定變比和誤差互感器的額定變比KN指電壓互感器的額定電壓比和電流互感器的額定電流比。前者定義為原邊繞組額定電壓U1N與副邊繞組額定電壓U2N之比；后者則為額定電流I1N與I2N之比。即KN=U1N/U2N（對(duì)電壓互感器）KN=I1N/I2N（對(duì)電流互感器）電壓（或電流）互感器原邊電壓（或電流）在一定范圍內(nèi)變動(dòng)時(shí)，一般規(guī)定為～（或10～120%I1N），副邊電壓（或電流）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(lì)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)折算后的二次電壓（或二次電流）與一次電壓（或一次電流）量值大小之差對(duì)后者之比，即fU為電壓互感器的比差，fI為電流互感器的比差。當(dāng)KNU2>U1（或KNI2>I1）時(shí)，比差為正，反之為負(fù)。對(duì)沒有采取補(bǔ)償措施的電壓互感器，比差為負(fù)，角差一般為正值，比差的比較的值和角差均隨電壓的增大而減??；鐵心飽和時(shí)，比差與角差均隨電壓的增大而增大。對(duì)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，比差的比較的值和角差均隨電流增大而減小。上?，F(xiàn)貨銷售電流互感器全國(guó)發(fā)貨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.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海定制電流互感器量大從優(yōu),電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087581865934/6371670875818659347638789.jpg"></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) </p> <p> ALH-0.66 80III 700/5 </p> <p> 型號(hào) </p> <p> ALH-0.66 40I 1000/1 15VA ML </p> <p> 型號(hào) </p> <p> ALH-0.66 30I-I 85/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 100III 3000/5EP </p> <p> 型號(hào) </p> <p> ALH-0.66 M8-I 40/1ML </p> <p> 型號(hào) </p> <p> ALH-0.66 100II 630/1ML </p> <p> 型號(hào) </p> <p> ALH-0.66 60*50II 400/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 80*50II 1500/2.5M </p> <p> 型號(hào) </p> <p> ALH-0.66 30I 30/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 40II 250/11R10VA </p> <p> 型號(hào) </p> <p> ALH-0.66 40II 800/50.2RML </p> <p> 型號(hào) </p> <p> ALH-0.66 40II 150/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 100*50II 3200/1M </p> <p> 型號(hào) </p> <p> ALH-0.66 30I-I 75/50.5R5VA </p> <p> 型號(hào) </p> <p> ALH-0.66 30I 200/50.2R2.5V </p> <p> 型號(hào) </p> <p> ALH-0.66 D12 800/5EPZZ </p> <p> 型號(hào) </p> <p> ALH-0.66 60II 1500/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 30I-I 40/10.5R5VA </p> <p> 型號(hào) </p> <p> ALH-0.66 60II 500/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 30I-I 40/5H </p> <p> 型號(hào) </p> <p> ALH-0.66 40II 400/2.5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 40II 300/115VAML </p> <p> 型號(hào) </p> <p> ALH-0.66 30I-I 100/11R5VA </p> <p> 型號(hào) </p> <p> ALH-0.66 170*100II 5000/5 </p> <p> 型號(hào) </p> <p> ALH-0.66 120*50II 1250/5 </p> <p> 型號(hào) </p> <p> ALH-0.66 60*50II 1000/1ML </p> <p> 型號(hào) </p> <p> ALH-0.66 80*50II 800/1ML </p> <p> 型號(hào) </p> <p> ALH-0.66 M8-I 100/1ML </p> <p> 型號(hào) </p> <p> ALH-0.66 100II 1000/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 80*50II 600/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 30I 350/5ML </p> <p> 型號(hào) </p> <p> ALH-0.66 220*50II 5000/5M </p> <p> ALH-0.66 D12 500/5XGZZ </p> <p> 型號(hào) </p> <p> ALH-0.66 100III 1500/5EP </p> <p> 型號(hào) </p> <p> ALH-0.66 60II 1500/1 </p> <p> 型號(hào) </p> <p> ALH-0.66 80*50II 1000/1ML </p> <p> 型號(hào) </p> <p> ALH-0.66 100*50II 2000/2.5 </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(hào) ALH-0.66 30I-I 200/5ML </p> <p> 型號(hào) ALH-0.66 40II 200/1ML </p> <p> 型號(hào) ALH-0.66 30I-I 20/10.5RML </p> <p> 型號(hào) ALH-0.66 30I 160/5 </p> <p> 型號(hào) ALH-0.66 30I-I 80/1ML </p> <p> 型號(hào) ALH-0.66 50II 250/5ML </p> <p> 型號(hào) ALH-0.66 80II 1500/5ML </p> <p> 型號(hào) ALH-0.66 M8-I 5/1ML </p> <p> 型號(hào) ALH-0.66 40II 500/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 40/5ML </p> <p> 型號(hào) ALH-0.66 40I 200/5ZZ </p> <p> 型號(hào) ALH-0.66 40I 10/5 </p> <p> 型號(hào) ALH-0.66 170*100II 4000/5 </p> <p> 型號(hào) ALH-0.66 100II 2000/5ML </p> <p> 型號(hào) ALH-0.66 80*50II 400/5ML </p> <p> 型號(hào) ALH-0.66 60*50II 2000/1ML </p> <p> 型號(hào) ALH-0.66 80II 1200/1 </p> <p> 型號(hào) ALH-0.66 30I-I 100/110VAM </p> <p> 型號(hào) ALH-0.66 30I-I 30/5H </p> <p> 型號(hào) ALH-0.66 60II 300/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 50/50.5R </p> <p> 型號(hào) ALH-0.66 100II 1000/1ML </p> <p> 型號(hào) ALH-0.66 40I 300/110VAML </p> <p> 型號(hào) ALH-0.66 60II 2000/1 </p> <p> 型號(hào) ALH-0.66 30I-I 50/5ML </p> <p> 型號(hào) ALH-0.66 40I 75/5 0.5R 2.5VA 2T </p> <p> 型號(hào) ALH-0.66 30I-I 30/11RML </p> <p> 型號(hào) ALH-0.66 D12 75/5XGZZ </p> <p> 型號(hào) ALH-0.66 30I-I 15/50.5RML </p> <p> 型號(hào) ALH-0.66 M8-II 5/50.5R </p> <p> 型號(hào) ALH-0.66 30I 50/5ML </p> <p> 型號(hào) ALH-0.66 80*50II 1600/2.5ML </p> <p> 型號(hào) ALH-0.66 80*50II 2000/5ML </p> <p> 型號(hào) ALH-0.66 30I 125/5ML </p> <p> 型號(hào) ALH-0.66 60I 750/5ML </p> <p> 型號(hào) ALH-0.66 50II 500/5ML </p> <p> 型號(hào) ALH-0.66 M8-I 30/5ML </p> <p> 型號(hào) ALH-0.66 40II 600/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 75/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 75/5H 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="上海定制電流互感器量大從優(yōu),電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087835529280/6371670878355292804681260.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(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.上海定制電流互感器量大從優(yōu)</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 D8-II電流互感器.上海定制電流互感器量大從優(yōu)</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。上海定制電流互感器量大從優(yōu)</p><p 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