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class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167636099732514/6371676360997325149233996.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="9prtac7" 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>上海優(yōu)惠特賣電流互感器歡迎來電,電流互感器</p><p><span>***更新：</span>2020-12-02 13:03:31</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="3372ue3" 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="rf3hlsc" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ah47n8b" class="box"><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(jì)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(hào)、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(duì)電流互感器二次負(fù)荷**嚴(yán)重的短路類型，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10%誤差：1）增大連接導(dǎo)線截面或縮短連接導(dǎo)線長(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，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表和繼電器線圈電阻，上海優(yōu)惠特賣電流互感器歡迎來電，上海優(yōu)惠特賣電流互感器歡迎來電、電抗及接線接觸電阻，上海優(yōu)惠特賣電流互感器歡迎來電、二次連接導(dǎo)線電阻的影響。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.上海優(yōu)惠特賣電流互感器歡迎來電</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海優(yōu)惠特賣電流互感器歡迎來電,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167636099732514/6371676360997325149233996.png"></div><p> 兩者的使用發(fā)展方向由于電磁式電流互感器存在的易飽和、非線性及頻帶窄等問題，電子式電流互感器逐漸興起。電子式電流互感器一般具有抗磁飽和、低功耗、寬頻帶等優(yōu)點(diǎn)。國(guó)內(nèi)具有代表性的電子式互感器有AnyWay變頻電壓傳感器、AnyWay變頻電流傳感器和變頻功率傳感器，其中，AnyWay變頻功率傳感器屬于電壓、電流組合式互感器。該互感器的主要特點(diǎn)如下1、采用前端數(shù)字化技術(shù)，光纖傳輸，電磁兼容性好。2、幅頻特性和相頻特性好，在寬幅值、頻率、相位范圍內(nèi)均可獲得較高的測(cè)量精度。3、屬于數(shù)字式傳感器，二次儀表不會(huì)引入誤差，傳感器誤差就是系統(tǒng)誤差。 </p> <p> 額定電壓電流互感器額定電壓應(yīng)大于裝設(shè)點(diǎn)線路額定電壓 [7] 。變比應(yīng)根據(jù)一次負(fù)荷計(jì)算電流IC選擇電流互感器變比。電流互感器一次側(cè)額定電流標(biāo)準(zhǔn)比（如20、30、40、50、75、100、150、2×a/C）等多種規(guī)格，二次側(cè)額定電流通常為1A或5A。其中2×a/C表示同一臺(tái)產(chǎn)品有兩種電流比，通過改變產(chǎn)品的連接片接線方式實(shí)現(xiàn)，當(dāng)串聯(lián)時(shí)，電流比為a/c，并聯(lián)時(shí)電流比為2×a/C。一般情況下，計(jì)量用電流互感器變流比的選擇應(yīng)使其一次額定電流I1n不小于線路中的負(fù)荷電流（即計(jì)算IC）。如線路中負(fù)荷計(jì)算電流為350A，則電流互感器的變流比應(yīng)選擇400/5 上海優(yōu)惠特賣電流互感器歡迎來電上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 130*50II電流互感器.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海優(yōu)惠特賣電流互感器歡迎來電,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087835529280/6371670878355292804681260.png"></div><p> 電氣調(diào)試是電力工作中一項(xiàng)重要的內(nèi)容，在電氣調(diào)試工作中，二次回路檢查又是一項(xiàng)重要的調(diào)試內(nèi)容，它是關(guān)系到電力系統(tǒng)的測(cè)量、保護(hù)、通訊等功能能否發(fā)揮作用的前提。在二次回路中，電流互感器的接線是否正確又是電流二次回路是否正確的基礎(chǔ)，所以電流互感器的接線正確性非常重要。很多電氣調(diào)試人員對(duì)它沒有深刻的理解，經(jīng)常搞錯(cuò)，造成諸如差動(dòng)保護(hù)誤動(dòng)作、電度表反轉(zhuǎn)等。下面對(duì)這個(gè)問題做一個(gè)***、細(xì)致的論述。電氣調(diào)試是電力工作中一項(xiàng)重要的內(nèi)容，在電氣調(diào)試工作中，二次回路檢查又是一項(xiàng)重要的調(diào)試內(nèi)容，它是關(guān)系到電力系統(tǒng)的測(cè)量、保護(hù)、通訊等功能能否發(fā)揮作用的前提。在二次回路中，電流互感器的接線是否正確又是電流二次回路是否正確的基礎(chǔ)，所以電流互感器的接線正確性非常重要。很多電氣調(diào)試人員對(duì)它沒有深刻的理解，經(jīng)常搞錯(cuò)，造成諸如差動(dòng)保護(hù)誤動(dòng)作、電度表反轉(zhuǎn)等。下面對(duì)這個(gè)問題做一個(gè)***、細(xì)致的論述。電流互感器的結(jié)構(gòu)較為簡(jiǎn)單，由相互絕緣的一次繞組、二次繞組、鐵心以及構(gòu)架、殼體、接線端子等組成。其工作原理與變壓器基本相同，一次繞組的匝數(shù)(N1)較少，直接串聯(lián)于電源線路中，一次負(fù)荷電流。 </p><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(jí)選擇的原則：計(jì)費(fèi)計(jì)量用的電流互感器其準(zhǔn)確級(jí)不低于0．5級(jí)；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(jí)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(zhǎng)度（m）。設(shè)互感器到儀表單向長(zhǎng)度為L(zhǎng)1，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(jí)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(duì)應(yīng)的ε%=5%）。上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 80*60II-P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)惠特賣電流互感器歡迎來電,電流互感器" src="http://tyunfile.71360.com/UpLoadFile/shcmzdh/2020/2/637167087691485417/6371670876914854172826101.png"></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) ALH-0.66 100*50II 2500/5M </p> <p> 型號(hào) ALH-0.66 60II 150/1ML </p> <p> 型號(hào) ALH-0.66 30I-I 150/5ML </p> <p> 型號(hào) ALH-0.66 100II 2500/5ML </p> <p> 型號(hào) ALH-0.66 60*50II 2500/1ML </p> <p> 型號(hào) ALH-0.66 30I-I 30/11R0.4VA </p> <p> 型號(hào) ALH-0.66 30I-I 150/1H </p> <p> 型號(hào) ALH-0.66 80II 150/5ML </p> <p> 型號(hào) ALH-0.66 50II 800/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 50/50.5RML </p> <p> 型號(hào) ALH-0.66 40I 100/5ZZ </p> <p> 型號(hào) ALH-0.66 40I 15/5ZZ </p> <p> 型號(hào) ALH-0.66 120*50II 5000/5M </p> <p> 型號(hào) ALH-0.66 40I 200/50.2R2.5V </p> <p> 型號(hào) ALH-0.66 30I 100/1ML </p> <p> 型號(hào) ALH-0.66 80I 250/5 </p> <p> 型號(hào) ALH-0.66 100II 1200/5ML </p> <p> 型號(hào) ALH-0.66 40I 300/5ZZ </p> <p> 型號(hào) ALH-0.66 M8-II 20/50.5R </p> <p> 型號(hào) ALH-0.66 100*50II 1000/5M </p> <p> 型號(hào) ALH-0.66 D12 150/5XGZZ </p> <p> 型號(hào) ALH-0.66 30I-I 30/11R2.5VA </p> <p> 型號(hào) ALH-0.66 80II 250/5ML </p> <p> 型號(hào) ALH-0.66 40I 350/5ML </p> <p> 型號(hào) ALH-0.66 80*50II 200/5ML </p> <p> 型號(hào) ALH-0.66 80*50II 1000/5ML </p> <p> 型號(hào) ALH-0.66 60I 350/5 </p> <p> 型號(hào) ALH-0.66 60II 750/5ML </p> <p> 型號(hào) ALH-0.66 100II I3000/5ML </p> <p> 型號(hào) ALH-0.66 80*50II 2000/2.5M </p> <p> 型號(hào) ALH-0.66 30I-I 150/5H </p> <p> 型號(hào) ALH-0.66 M8-I 5/5ML </p> <p> 型號(hào) ALH-0.66 40II 630/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 30/5ML </p> <p> 型號(hào) ALH-0.66 60II 100/5ML </p> <p> 型號(hào) ALH-0.66 50II 600/1ML </p> <p> 型號(hào) ALH-0.66 30I-I 20/1ML </p> <p> 型號(hào) ALH-0.66 30I 150/5ML </p> <p> 型號(hào) ALH-0.66 30I-I 25/50.5R2.5 上海喆和定制銷售西門子APT（原上海二工）ALH-0.66 200II電流互感器.上海優(yōu)惠特賣電流互感器歡迎來電</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)惠特賣電流互感器歡迎來電</p><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(cè)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(cè)量?jī)x表和保護(hù)回路中，電流互感器在工作時(shí)，它的二次側(cè)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(cè)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(cè)量?jī)x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(cè)量?jī)x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(cè)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。上海優(yōu)惠特賣電流互感器歡迎來電</p><p style="text-indent:25px">上海喆和機(jī)電科技有限公司致力于電工電氣，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。上海喆和機(jī)電科深耕行業(yè)多年，始終以客戶的需求為向?qū)В瑸榭蛻籼峁?**的編程控制器，光電傳感器，變頻器，軟啟動(dòng)器。上海喆和機(jī)電科不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺(tái)，以應(yīng)用為重點(diǎn)，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價(jià)值，提供更優(yōu)服務(wù)。上海喆和機(jī)電科始終關(guān)注電工電氣行業(yè)。滿足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2236895.html</p></div></div></div></div></div><div id="48a9y9s" class="page-right twoColRt"><div id="hrbn747" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rvpgdfc" class="recomPic likePro"><a href="http://www.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(qiáng) 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(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div 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