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href="http://www.cdcfah.com/cp/first-_dzyqj/">電子元器件</a>?<a href="http://www.cdcfah.com/cp/second-dzyqj_chuanganqisr/">傳感器</a>?<a href="http://www.cdcfah.com/cp/third-chuanganqisr_dycgq/">電壓傳感器</a>?麗水電壓互感器廠家供應(yīng) 誠信經(jīng)營杭州浩蘊(yùn)自動化科技供應(yīng)</p><div id="tzm4h6w" class="leftbox clearfix"><h1>麗水電壓互感器廠家供應(yīng) 誠信經(jīng)營杭州浩蘊(yùn)自動化科技供應(yīng)</h1><div id="azvtxf1" class="proBig"><div id="vw3ga2l" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/hzhy00290/637363091325820312/3530425.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xrjwtvs" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/hzhy00290/637363091325820312/3530425.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="u3jiyvc" 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>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>麗水電壓互感器廠家供應(yīng),電壓互感器</p><p><span>***更新：</span>2020-09-28 02:04:51</p><p><span id="click" >瀏覽次數(shù)：9次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="cm3by3v" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">杭州浩蘊(yùn)自動化科技有限公司</a></p><p><span>聯(lián)系人：</span>謝凱浩</p><p><span>郵箱: </span>1017004522@qq.com</p><p><span>電話: </span>13817446397</p><p><span>傳真: </span>0571_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0571-85385963</p><p><span>地址: </span>經(jīng)濟(jì)技術(shù)開發(fā)區(qū)18號大街795號1幢11層1109室</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="azgi3zu" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hqskmtq" class="box"><p><p> 為什么<strong>電壓互感器</strong>不能短路，電流互感器不得開路？（二） </p> <p> 假設(shè)電流互感器的副線圈開路，此時(shí)副線圈電流I2＝0，使得原線圈電流I1＝0，那么原線圈也就相當(dāng)于開路了。 </p> <p> 那么在被測電路的負(fù)載的電流幾乎為零，就會使原線圈兩端電壓接近于電源電壓，而此刻副線圈產(chǎn)生的電壓則為原線圈的電壓的n倍。 </p> <p> 由此看來副線圈如此高的電壓，不僅危及測量儀表，麗水電壓互感器廠家供應(yīng)，麗水電壓互感器廠家供應(yīng)，還給人身安全帶來巨大危險(xiǎn)。所以說，電流互感器的副線圈不得開路，也不能安裝熔斷器，麗水電壓互感器廠家供應(yīng)。 </p> <p> 電壓互感器在測量運(yùn)行中，其副線圈不得短路，為什么不能短路呢？什么是電流互感器？電流互感器是什么樣子的,它的原理又是如何的?麗水電壓互感器廠家供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水電壓互感器廠家供應(yīng),電壓互感器" src="https://tyunfile.71360.com/UploadFile/hzhy00290/637363091325820312/3530425.jpg"></div><p> 電磁式<strong>電壓互感器</strong>的特點(diǎn) </p> <p> 電磁式電壓互感器的一次繞組直接并聯(lián)于一次回路中，一次繞組上的電壓取決于一次回路上的電壓；二次繞組與一次繞組無電的耦合，是通過磁耦合；二次繞組通常接的是一些儀表、儀器及保護(hù)裝置，容量一般均在幾十至幾百VA，所以負(fù)載很小，而且是恒定的。所以電壓互感器的一次側(cè)可視為一個(gè)電壓源，基本不受二次負(fù)載的影響；正常運(yùn)行時(shí)，電壓互感器二次側(cè)由于負(fù)載較小，基本處于開路狀態(tài)，電壓互感器二次電壓基本等于二次側(cè)感應(yīng)電動勢，取決于一次系統(tǒng)電壓。麗水電壓互感器廠家供應(yīng)電流互感器T和負(fù)荷電流互感器P有什么區(qū)別？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水電壓互感器廠家供應(yīng),電壓互感器" src="https://tyunfile.71360.com/UploadFile/hzhy00290/637363091325664062/9323386.jpg"></div><p> 4、<strong>電壓互感器</strong>的分類 </p> <p> （1）按安裝地點(diǎn)分為：戶內(nèi)式、戶外式。 </p> <p> （2）按相數(shù)分為：單相式、三相式。 </p> <p> （3）按繞組數(shù)目分為：雙繞組、三繞組。 </p> <p> （4）按絕緣方式分為：干式、澆注式、油浸式和充氣式。 </p> <p> （5）按工作原理分為：電磁式、電容式、電子式。 </p> <p> 5、<strong>電壓互感器</strong>的使用注意事項(xiàng)（一） </p> <p> （1）電壓互感器在投入運(yùn)行前要按照規(guī)程規(guī)定的項(xiàng)目進(jìn)行試驗(yàn)檢查。例如，測極性、連接組別、搖絕緣、核相序等。 </p> <p> （2）電壓互感器的接線應(yīng)保證其正確性，一次繞組和被測電路并聯(lián)，二次繞組應(yīng)和所接的測量儀表、繼電保護(hù)裝置或自動裝置的電壓線圈并聯(lián)，同時(shí)要注意極性的正確性。 </p><p> <strong>電壓互感器</strong>的工作原理（三） </p> <p> 電壓互感器是發(fā)電廠、變電所等輸電和供電系統(tǒng)不可缺少的一種電器。精密電壓互感器是電測試驗(yàn)室中用來擴(kuò)大量限，測量電壓、功率和電能的一種儀器。電壓互感器和變壓器很相像，都是用來變換線路上的電壓。 </p> <p> 線路上為什么需要變換電壓呢？這是因?yàn)楦鶕?jù)發(fā)電、輸電和用電的不同情況，線路上的電壓大小不一，而且相差懸殊，有的是低壓220V和380V，有的是高壓幾萬伏甚至幾十萬伏。要直接測量這些低壓和高壓電壓，就需要根據(jù)線路電壓的大小，制作相應(yīng)的低壓和高壓的電壓表和其他儀表和繼電器。這樣不僅會給儀表制作帶來很大困難，而且更主要的是，要直接制作高壓儀表，直接在高壓線路上測量電壓，那是不可能的，而且也是***不允許的。電流互感器有沒有好的推薦?</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水電壓互感器廠家供應(yīng),電壓互感器" src="https://tyunfile.71360.com/UploadFile/hzhy00290/637363091324921875/8881537.jpg"></div><p> 二、<strong>電壓互感器</strong>的工作原理 </p> <p> 其工作原理與變壓器相同，基本結(jié)構(gòu)也是鐵心和原、副繞組。特點(diǎn)是容量很小且比較恒定，正常運(yùn)行時(shí)接近于空載狀態(tài)。 </p> <p> 電壓互感器本身的阻抗很小，一旦副邊發(fā)生短路，電流將急劇增長而燒毀線圈。為此，電壓互感器的原邊接有熔斷器，副邊可靠接地，以免原、副邊絕緣損毀時(shí)，副邊出現(xiàn)對地高電位而造成人身和設(shè)備事故。 </p> <p> 電壓互感器的線圈阻抗較小，所以電壓互感器的二次繞組不能短路，二次繞組如果短路將導(dǎo)致繞組承受的阻抗變大，繞組承受不了造成PT燒毀。浩蘊(yùn)自動化_伊頓穆勒_ETAON_電流互感器!麗水電壓互感器廠家供應(yīng)</p><p style="text-indent:25px">可編程電流互感器及應(yīng)用。麗水電壓互感器廠家供應(yīng)</p><p> <strong>電壓互感器</strong>和電流互感器的區(qū)別（四） </p> <p> 總結(jié)：電壓互感器和電流互感器在作用原理上的區(qū)別 </p> <p> 1)電流互感器二次可以短路，但不得開路；電壓互感器二次可以開路，但不得短路； </p> <p> 2)相對于二次側(cè)的負(fù)荷來說，電壓互感器的一次內(nèi)阻抗較小以至可以忽略，可以認(rèn)為電壓互感器是一個(gè)電壓源；而電流互感器的一次卻內(nèi)阻很大，以至可以認(rèn)為是一個(gè)內(nèi)阻無窮大的電流源。 </p> <p> 3)電壓互感器正常工作時(shí)候的磁通密度接近飽和值，故障時(shí)磁通密度下降；電流互感器正常工作時(shí)磁通密度很低，而短路時(shí)由于一次側(cè)短路電流變得很大，使磁通密度**增加，有時(shí)甚至遠(yuǎn)遠(yuǎn)超過飽和值。麗水電壓互感器廠家供應(yīng)</p><p style="text-indent:25px">杭州浩蘊(yùn)自動化科技有限公司致力于機(jī)械及行業(yè)設(shè)備，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。浩蘊(yùn)自動化深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的凸輪開關(guān)，隔離開關(guān)，電流互感器，電壓互感器。浩蘊(yùn)自動化不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，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)。浩蘊(yùn)自動化始終關(guān)注機(jī)械及行業(yè)設(shè)備市場，以敏銳的市場洞察力，實(shí)現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1448786.html</p></div></div></div></div></div><div id="rg33qsu" class="page-right twoColRt"><div id="3srsj7b" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hwdf3ls" 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) 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