上海優(yōu)惠特賣電流互感器貨源充足歡迎來電上海喆和機(jī)電科技供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="上海喆和定制銷售西門子APT原廠電流互感器，交貨快，款式種類多，個性化定制等。技術(shù)特性3.1技術(shù)參數(shù)1)額定一次電流（Ipn）：5A～5000A2)額定一次二次電流（Isn）：5A/1A3)額定工作電壓（Un）：AC660V（5"><meta name="keywords" content="上海優(yōu)惠特賣電流互感器貨源充足,電流互感器"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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class="leftbox clearfix"><h1>上海優(yōu)惠特賣電流互感器貨源充足歡迎來電上海喆和機(jī)電科技供應(yīng)</h1><div id="bvmbkl3" class="proBig"><div id="ptasrnu" 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="ixpheb7" 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="m37i7ta" 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>上海優(yōu)惠特賣電流互感器貨源充足,電流互感器</p><p><span>***更新：</span>2020-12-21 17:03:09</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="x9uhoqn" 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="xj82nub" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ix2ft3v" class="box"><p><p> 上海喆和定制銷售西門子APT原廠電流互感器，交貨快，款式種類多，個性化定制等。 </p> <span style="display:none;"></span> <p> 技術(shù)特性 </p> <p> 3.1 技術(shù)參數(shù) </p> <p> 1) 額定一次電流（Ipn）：5A～5000A </p> <span style="display:none;"></span> <p> 2) 額定一次二次電流（ Isn）：5A/1A </p> <p> 3) 額定工作電壓（ Un）：AC660V（50/60Hz） </p> <p> 4) 額定連續(xù)熱電流 (Icth)：1.2 x Ipn </p> <p> 5) 額定短時熱電流 (Ith)：≥60x Ipn（1sec.） </p> <p> 6) 工頻耐壓：3kV， </p> <p> （1min ,50Hz;外殼與二次端子間） </p> <p> <br /> </p> <p> 7) 絕緣等級：E </p> <p> 8) 接線端子的型式：螺釘（ M4）壓片緊固式 </p> <p> 8) 操作力矩：擰緊力矩0，上海優(yōu)惠特賣電流互感器貨源充足.8~1.2N.m ，上海優(yōu)惠特賣電流互感器貨源充足, </p> <p> 額定承受力矩 2.4N.m; </p> <p> 9) 安裝及穿芯孔尺寸見圖 1： </p> <p> 10) 防護(hù)等級：端子 IP00，外殼IP40 </p> <p> <br /> </p> <p> 3.2 工作環(huán)境 </p> <p> 1) 使用環(huán)境溫度： -5℃～+40℃；24小時平均環(huán)境溫度不超過 +35℃； </p> <p> 2) 空氣相對濕度： 24小時內(nèi)平均不超過 95%，上海優(yōu)惠特賣電流互感器貨源充足，1個月內(nèi)平均不超過 90%； </p> <p> 3) 安裝地點(diǎn)的海拔：海撥不超過 1000m； </p> <p> 4) 振動或輕微地震：由外部原因引起的電流互感器振動或輕微地震可以忽略； </p> <p> 5) 污染等級：II類 </p> <p> <br /> 上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 60I電流互感器.上海優(yōu)惠特賣電流互感器貨源充足</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海優(yōu)惠特賣電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167088129589451/6371670881295894516977483.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(yùn)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(shí)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(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，向繼電裝置提供信號切斷故障電路，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)定性和動穩(wěn)定性。上海優(yōu)惠特賣電流互感器貨源充足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.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海優(yōu)惠特賣電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/WaterMark/UpLoadFile/shcmzdh/2020/2/637167087454347244/6371670874543472446544135.png"></div><p> 上海喆和定制銷售西門子APT原廠電流互感器，交貨快，款式種類多，個性化定制等。 </p> <p> <p> 1 概述 </p> <p> 1.1 主要用途 </p> <p> ALH-0.66 系列電流互感器采用**度外殼全封閉結(jié)構(gòu)。當(dāng)一次側(cè)穿芯匝數(shù)為 1時，中心孔以穿母線為主，也可以穿電纜；中心孔穿 </p> <p> 軟質(zhì)電纜時，需根據(jù)型號標(biāo)明的一次側(cè)匝數(shù)穿芯。本產(chǎn)品為測量用互感器，一般配合測量儀表使用，用來顯示被測電路的工作電流。也可 </p> <p> 用于控制、保護(hù)電路等場所。 P1、P2表示一次極性端， S1、S2表示二次極性端。 P1、S1及P2、S2為同名端（減極性）。 </p> <p> <p> 安全使用和注意事項(xiàng) </p> <p> 1) 嚴(yán)格按照銘牌上額定功率、額定變比、準(zhǔn)確度等級使用本產(chǎn)品； </p> <p> 2) 二次接線端子 S1、S2不得開路，且負(fù)載接線保證接觸良好，以免互感器產(chǎn)生高電壓危及設(shè)備和人身安全； </p> <p> S1、S2應(yīng)有一端可靠接地，以防止一二次間絕緣擊穿； </p> <p> 3) 二次回路連接導(dǎo)線應(yīng)采用足夠容量且中間無接頭的銅芯絕緣線； </p> <p> 4）二次繞組回路中所串入儀表的阻抗不應(yīng)超過相關(guān)技術(shù)標(biāo)準(zhǔn)的規(guī)定； </p> <p> 5）應(yīng)避免繼電保護(hù)用互感器和電能計量用電流互感器并用。 </p> </p> </p><p> 由于一次繞組與二次繞組有相等的安培匝數(shù)，I1N1=I2N2，電流互感器額定電流比：。電流互感器實(shí)際運(yùn)行中負(fù)荷阻抗很小，二次繞組接近于短路狀態(tài)，相當(dāng)于一個短路運(yùn)行的變壓器。2、電流互感器的接線原則(1)電流互感器二次側(cè)不允許開路。二次開路可能產(chǎn)生嚴(yán)重后果，一是鐵芯過熱，甚至燒毀互感器;二是由于二次繞組匝數(shù)很多，會感應(yīng)出危險的高電壓，危及人身和設(shè)備的安全。(2)高壓電流互感器的二次側(cè)必須有一點(diǎn)接地。由于高壓電流互感器的一次側(cè)為高壓，當(dāng)一、二次線圈之間因絕緣損壞出線高壓擊穿時，將導(dǎo)致高壓進(jìn)入低壓，如果二次線圈一點(diǎn)接地，則將高壓引入了大地，可確保人身及設(shè)備的安全。但應(yīng)當(dāng)注意，電流互感器的二次回路只允許一點(diǎn)接地，而不允許再有接地，否則有可能引起分流，影響使用。低壓電流互感器的二次線圈不應(yīng)該接地。由于低壓互感器的電壓較低，一、二次線圈間的絕緣欲度大，發(fā)生一、二次線圈擊穿的可能性小，另外，二次線圈的不接地將使二次回路及儀表的絕緣能力提高，還可使雷擊燒毀儀表***減少。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="上海優(yōu)惠特賣電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087883095803/6371670878830958036124787.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(jìn)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(yàn)一般采用被測互感器與標(biāo)準(zhǔn)互感器進(jìn)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(yàn)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。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 D12電流互感器.上海優(yōu)惠特賣電流互感器貨源充足</p><p style="text-indent:25px">上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 100*60II-P電流互感器.上海優(yōu)惠特賣電流互感器貨源充足</p><p> 電流互感器ε%誤差曲線校驗(yàn)步驟：⑴按照保護(hù)裝置類型計算流過電流互感器的一次電流倍數(shù)⑵根據(jù)電流互感器的型號、變比和一次電流倍數(shù)，在10%誤差曲線上確定電流互感器的允許二次負(fù)荷⑶按照對電流互感器二次負(fù)荷**嚴(yán)重的短路類型，計算電流互感器的實(shí)際二次負(fù)荷⑷比較實(shí)際二次負(fù)荷與允許二次負(fù)荷。如實(shí)際二次負(fù)荷小于允許二次負(fù)荷，表示電流互感器的誤差不超過10%誤差：1）增大連接導(dǎo)線截面或縮短連接導(dǎo)線長度，以減小實(shí)際二次負(fù)荷2）選擇比較大的電流互感器，減小一次電流倍數(shù)，增大允許二次負(fù)荷3）將電流互感器的二次繞組串聯(lián)起來，使允許二次負(fù)荷增大一倍。動、熱穩(wěn)定度需校驗(yàn)電流互感器的動穩(wěn)定度和熱穩(wěn)定度[9]，廠家的產(chǎn)品技術(shù)參數(shù)中都給出了動穩(wěn)定倍數(shù)Kes和熱穩(wěn)定倍數(shù)Kt，因此按下列公式分別校驗(yàn)動穩(wěn)定和熱定度即可。1）動穩(wěn)定度校驗(yàn)Kes×I1N≥2）熱穩(wěn)定度校驗(yàn)（KtI1n)2t≥I⑶∞tima式中，t為熱穩(wěn)定電流時間。額定容量電流互感器二次額定容量要大于實(shí)際二次負(fù)載，實(shí)際二次負(fù)載應(yīng)為25～**二次額定容量。容量決定二次側(cè)負(fù)載阻抗，負(fù)載阻抗又影響測量或控制精度。負(fù)載阻抗主要受測量儀表和繼電器線圈電阻、電抗及接線接觸電阻、二次連接導(dǎo)線電阻的影響。上海優(yōu)惠特賣電流互感器貨源充足</p><p 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