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clearfix"><h1>上海銷(xiāo)售電流互感器貨源充足歡迎來(lái)電上海喆和機(jī)電科技供應(yīng)</h1><div id="xcrwb2q" class="proBig"><div id="f3qgxyd" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087926902204/6371670879269022048294637.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="y4s32ue" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087926902204/6371670879269022048294637.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qauey3l" 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(xiāo)售電流互感器貨源充足,電流互感器</p><p><span>***更新：</span>2020-08-21 18:04:10</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="kk2jf7k" 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(huà): </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(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="vijtz8o" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ans8tts" class="box"><p><p style="text-indent:25px"> 上海喆和銷(xiāo)售電流互感器。對(duì)于電流互感器退磁，一次繞組開(kāi)路，二次繞組通以工頻電流，從零開(kāi)始逐漸增加到一定的電流值(該電流值與互感器的設(shè)計(jì)測(cè)量上限有關(guān)，一般為額定電流的20-50%左右?？梢赃@樣判斷，如果電流突然急劇變大，此時(shí)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(kāi)電源前，應(yīng)將一次繞組短接，才斷開(kāi)電源。鐵芯退磁完成。此方法稱(chēng)開(kāi)路退磁法。對(duì)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(kāi)路退磁法，開(kāi)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)，上海銷(xiāo)售電流互感器貨源充足。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(guò)大的話(huà)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(guò)高的話(huà)，可以加大二次繞組的負(fù)載電阻。這樣可以提高退磁效果。3、電流互感器誤差試驗(yàn)互感器誤差試驗(yàn)一般采用被測(cè)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(cè)互感器誤差。此種檢驗(yàn)方法稱(chēng)比較法，上海銷(xiāo)售電流互感器貨源充足。標(biāo)準(zhǔn)互感器要求比被測(cè)互感器高出二個(gè)等級(jí)，此時(shí)標(biāo)準(zhǔn)互感器誤差可忽略不計(jì)，上海銷(xiāo)售電流互感器貨源充足。上海喆和定制銷(xiāo)售西門(mén)子APT（原上海二工）ALH-0.66 170*100II-P電流互感器.上海銷(xiāo)售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="上海銷(xiāo)售電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087926902204/6371670879269022048294637.png"></div><p> 上海喆和定制銷(xiāo)售西門(mén)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(cè)量的電流的線(xiàn)路中，因此它經(jīng)常有線(xiàn)路的全部電流流過(guò)，二次繞組匝數(shù)比較多，串接在測(cè)量?jī)x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(cè)量?jī)x表和保護(hù)回路串聯(lián)線(xiàn)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(xiàn)路中電流大小懸殊，從幾安到幾萬(wàn)安都有。為便于測(cè)量、保護(hù)和控制需要轉(zhuǎn)換為比較統(tǒng)一的電流，另外線(xiàn)路上的電壓一般都比較高如直接測(cè)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(duì)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(jí)的（如5A等）。對(duì)于數(shù)字化儀表，采樣的信號(hào)一般為毫安級(jí)（0-5V、4-20mA等）。微型電流互感器二次電流為毫安級(jí)，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(chēng)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(xiāo)售電流互感器貨源充足上海喆和定制銷(xiāo)售西門(mén)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="上海銷(xiāo)售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> 電流互感器ε%誤差曲線(xiàn)校驗(yàn)步驟：⑴按照保護(hù)裝置類(lèi)型計(jì)算流過(guò)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(hào)、變比和一次電流倍數(shù)，在10%誤差曲線(xiàn)上確定電流互感器的允許二次負(fù)荷⑶按照對(duì)電流互感器二次負(fù)荷**嚴(yán)重的短路類(lèi)型，計(jì)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(guò)10%誤差：1）增大連接導(dǎo)線(xiàn)截面或縮短連接導(dǎo)線(xiàn)長(zhǎng)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(lái)，使允許二次負(fù)荷增大一倍。動(dòng)、熱穩(wěn)定度需校驗(yàn)電流互感器的動(dòng)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(dòng)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(dòng)穩(wěn)定和熱定度即可。1）動(dòng)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(shí)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(cè)量或控制精度。負(fù)載阻抗主要受測(cè)量?jī)x表和繼電器線(xiàn)圈電阻、電抗及接線(xiàn)接觸電阻、二次連接導(dǎo)線(xiàn)電阻的影響。 </p><p style="text-indent:25px"> 上海喆和供應(yīng)西門(mén)子APT電流互感器。在供電用電的線(xiàn)路中電流電壓比較大的小小相差懸殊從幾安到幾萬(wàn)安都有。為便于二次儀表測(cè)量需要轉(zhuǎn)換為比較統(tǒng)一的電流，另外線(xiàn)路上的電壓都比較高如直接測(cè)量是非常危險(xiǎn)的。電流互感器就起到變流和電氣隔離作用。較早前，顯示儀表大部分是指針式的電流電壓表，所以電流互感器的二次電流大多數(shù)是安培級(jí)的（如5A等）。現(xiàn)在的電量測(cè)量大多數(shù)字化，而計(jì)算機(jī)的采樣的信號(hào)一般為毫安級(jí)（0-5V、4-20mA等）。微型電流互感器二次電流為毫安級(jí)，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(chēng)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。）微型電流互感器與變壓器類(lèi)似也是根據(jù)電磁感應(yīng)原理工作，變壓器變換的是電壓而微型電流互感器變換的是電流罷了。如圖繞組N1接被測(cè)電流，稱(chēng)為一次繞組（或原邊繞組、初級(jí)繞組）；繞組N2接測(cè)量?jī)x表，稱(chēng)為二次繞組（或副邊繞組、次級(jí)繞組）。微型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K。微型電流互感器在額定工作電流下工作時(shí)的電流比叫電流互感器額定電流比，用Kn表示。上海喆和定制銷(xiāo)售西門(mén)子APT（原上海二工）ALH-0.66 30III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(xiāo)售電流互感器貨源充足,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087626920413/6371670876269204131239849.png"></div><p style="text-indent:25px"> 蘇州西門(mén)子電器有限公司，簡(jiǎn)稱(chēng)“西門(mén)子APT”電流互感器Φ，補(bǔ)償方法先進(jìn)，工藝技術(shù)精湛，性能安全可靠，外形小巧美觀，種類(lèi)齊全，一般作控制、保護(hù)、測(cè)量用途。Φ型電流互感器適用于小電流小空間的場(chǎng)所，特別適用于抽屜柜?？刹捎脤?dǎo)軌直接安裝(或可采用本廠配置的底柜安裝)，也可采用母線(xiàn)直徑安裝。一次側(cè)采用直接穿芯的方法，不需要斷開(kāi)導(dǎo)線(xiàn)，穿芯孔徑可分為Φ8mm、Φ12mm、Φ15mm和Φ22mm四種。內(nèi)部鐵芯選用質(zhì)量硅鋼片；符合；通過(guò)國(guó)家計(jì)量認(rèn)證；額定工作電壓(Un)：AC660V二次電流分為5A和1A；額定頻率：50～60Hz額定連續(xù)熱電流(Icth)：xIpn額定短時(shí)熱電流（Ith）：60xIpn（1sec.）工頻耐壓：3kV（1min,50Hz;外殼與二次端子間）絕緣等級(jí)：E接線(xiàn)端子的型式：螺釘壓片緊固式(螺紋為M4)操作力矩：擰緊力矩～,額定承受力矩防護(hù)等級(jí)：端子IP00，外殼IP40。上海喆和定制銷(xiāo)售西門(mén)子APT（原上海二工）ALH-0.66 D12電流互感器.上海電流互感器源頭直供</p><p style="text-indent:25px">上海喆和定制銷(xiāo)售西門(mén)子APT（原上海二工）ALH-0.66 60II-P電流互感器.上海銷(xiāo)售電流互感器貨源充足</p><p> 上海喆和定制銷(xiāo)售西門(mén)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(xiàn)截面積大，串入被測(cè)電路。2次側(cè)匝數(shù)多，導(dǎo)線(xiàn)細(xì)，與阻抗較小的儀表(電流表/功率表的電流線(xiàn)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(guò)±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(guò)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(xiàn)路發(fā)生短路過(guò)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(kāi)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。上海銷(xiāo)售電流互感器貨源充足</p><p style="text-indent:25px">上海喆和機(jī)電科技有限公司成立于2016-01-25，專(zhuān)業(yè)從事機(jī)電科技領(lǐng)域內(nèi)的技術(shù)開(kāi)發(fā)、技術(shù)咨詢(xún)、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(mén)的批發(fā)、零售?！疽婪毥?jīng)批準(zhǔn)的項(xiàng)目,經(jīng)相關(guān)部門(mén)批準(zhǔn)后方可開(kāi)展經(jīng)營(yíng)活動(dòng)】等多項(xiàng)業(yè)務(wù)，主營(yíng)業(yè)務(wù)涵蓋[ "編程控制器", "光電傳感器", "變頻器", "軟啟動(dòng)器" ]。目前我公司在職員工達(dá)到11~50人人，是一個(gè)有活力有能力有創(chuàng)新精神的高速團(tuán)隊(duì)。誠(chéng)實(shí)、守信是對(duì)企業(yè)的經(jīng)營(yíng)要求，也是我們做人的基本準(zhǔn)則。公司致力于打造***的[ "編程控制器", "光電傳感器", "變頻器", "軟啟動(dòng)器" ]。公司憑著雄厚的技術(shù)力量、飽滿(mǎn)的工作態(tài)度、扎實(shí)的工作作風(fēng)、良好的職業(yè)道德，樹(shù)立了優(yōu)良的[ "編程控制器", "光電傳感器", "變頻器", "軟啟動(dòng)器" ]形象，贏得了社會(huì)各界的信任和認(rèn)可。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/993964.html</p></div></div></div></div></div><div id="ol8h3ue" 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