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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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>武漢電流互感器都有哪些,電流互感器</p><p><span>***更新：</span>2021-01-28 11:12:43</p><p><span id="click" >瀏覽次數(shù)：5次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wgiac7m" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">啟東雙贏電子科技有限公司</a></p><p><span>聯(lián)系人：</span>楊生</p><p><span>郵箱: </span>jmin_yang@126.com</p><p><span>電話: </span>18666184026</p><p><span>傳真: </span>0513_</p><p><span>網(wǎng)址: </span>http://www.qdsy-sensor.cn</p><p><span>手機(jī): </span>0513-86378688</p><p><span>地址: </span>寅陽鎮(zhèn)洪佳路8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="d2xxzwd" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="tdaczwj" class="box"><p><p style="text-indent:25px">電流互感器普遍用于發(fā)電廠、變電站、用電單位配電控制盤上的電氣儀表一般采用0.5級(jí)或0.2級(jí)；用于設(shè)備、線路的繼電保護(hù)一般不低于1級(jí)；用于電能計(jì)量時(shí)，視被測負(fù)荷容量或用電量多少依據(jù)規(guī)程要求來選擇。互感器比差：電流互感器的誤差包括比差和角差兩部分。比值誤差簡稱比差，一般用符號(hào)f表示，武漢電流互感器都有哪些，它等于實(shí)際的二次電流與折算到二次側(cè)的一次電流的差值，與折算到二次側(cè)的一次電流的比值，武漢電流互感器都有哪些，以百分?jǐn)?shù)表示。角差：相角誤差簡稱角差，一般用符號(hào)δ表示，武漢電流互感器都有哪些，它是旋轉(zhuǎn)180°后的二次電流向量與一次電流向量之間的相位差。規(guī)定二次電流向量超前于一次電流向量δ為正值，反之為負(fù)值，用分（’）為計(jì)算單位。要注意電流互感器故障檢查。武漢電流互感器都有哪些</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢電流互感器都有哪些,電流互感器" src="https://tyunfile.71360.com/UploadFile/shuangying/637311261384589843/604556.png"></div><p style="text-indent:25px">電流互感器根據(jù)磁通可以分析出:pt不能短路,短路回產(chǎn)生過流,ct不能開路,開路回產(chǎn)生高壓。主要區(qū)別是正常運(yùn)行時(shí)工作狀態(tài)大不相同,主要表現(xiàn)為:電流互感器二次可以短路,但是不得開路;對(duì)于二次側(cè)的負(fù)荷來說,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。電流互感器的工作原理、等值電路與一般變壓器相同，只是其原邊繞組串聯(lián)在被測電路中，且匝數(shù)很少；副邊繞組接電流表、繼電器電流線圈等低阻抗負(fù)載，近似短路。南京電流互感器需要多少錢組合式互感器多安裝于高壓計(jì)量箱、柜，用作計(jì)量電能或用作用電設(shè)備繼電保護(hù)裝置的電源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢電流互感器都有哪些,電流互感器" src="https://tyunfile.71360.com/UploadFile/shuangying/637314759948720703/3746576.png"></div><p style="text-indent:25px">我們知道的電流互感器是通過電磁感應(yīng)原理來工作的,電流的互感器的構(gòu)成部件分為繞組和鐵芯,它們的繞組上的匝數(shù)是經(jīng)過計(jì)算過的,通過電磁感應(yīng)原理來達(dá)到一一個(gè)測量的目的。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-次繞組匝數(shù)很少,串在需要測量的電流的線路中,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,串接在測儀表和保護(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,因此測量儀表和保護(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 style="text-indent:25px">電流互感器可用來擴(kuò)大交流電流表的量程。在使用時(shí)，它的原線圈應(yīng)與待測電流的負(fù)載線路相串聯(lián)，副邊線圈則與電流表串接成閉合回路。電流互感器的原線圈是用粗導(dǎo)線繞成，其匝數(shù)只有一匝或幾匝，因而它的阻抗極小。原線圈串接在待測電路中時(shí)，它兩端的電壓降極小。副線圈的匝數(shù)雖多，但在正常情況下，它的電動(dòng)勢(shì)E2并不高，大約只有幾伏。電流互感器通過負(fù)載的電流就等于副邊線圈所測得的電流與變流比Ki之乘積。如果電流表同一只**的電流互感器配套使用，則這安培表的刻度就可按大電流電路中的電流值標(biāo)出。電流互感器次級(jí)電流比較大值，通常設(shè)計(jì)為標(biāo)準(zhǔn)值5A。不同的電流的電路所配用的電流互感器是不同的。為了安全起見，電流互感器副線圈的一端和鐵殼必須接地。低壓電流互感器二次側(cè)可不接地。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="武漢電流互感器都有哪些,電流互感器" src="https://tyunfile.71360.com/UploadFile/shuangying/637311261366826171/8846875.png"></div><p style="text-indent:25px">電流互感器的技術(shù)要求：技術(shù)要求：額定容量：額定二次電流通過二次額定負(fù)荷時(shí)所消耗的視在功率。額定容量可以用視在功率V.A表示，也可以用二次額定負(fù)荷阻抗Ω表示。一次額定電流：允許通過電流互感器一次繞組的用電負(fù)荷電流。用于電力系統(tǒng)的電流互感器一次額定電流為5～25000A，用于試驗(yàn)設(shè)備的精密電流互感器為0.1～50000A。電流互感器可在一次額定電流下長期運(yùn)行，負(fù)荷電流超過額定電流值時(shí)叫做過負(fù)荷，電流互感器長期過負(fù)荷運(yùn)行，會(huì)燒壞繞組或減少使用壽命。二次額定電流：允許通過電流互感器二次繞組的一次感應(yīng)電流。電流互感器二次繞組所接儀表的電流線圈阻抗很小。南京電流互感器需要多少錢</p><p style="text-indent:25px">電流互感器普遍用于發(fā)電廠、變電站。武漢電流互感器都有哪些</p><p style="text-indent:25px">電流互感器基本特點(diǎn)：1、一次線圈串聯(lián)在電路中，并且匝數(shù)很少，因此，一次線圈中的電流完全取決于被測電路的負(fù)荷電流．而與二次電流無關(guān)；2、電流互感器二次線圈所接儀表和繼電器的電流線圈阻抗都很小，所以正常情況下，電流互感器在近于短路狀態(tài)下運(yùn)行。電流互感器一、二次額定電流之比，稱為電流互感器的額定互感比：kn=I1n/I2n因?yàn)橐淮尉€圈額定電流I1n己標(biāo)準(zhǔn)化，二次線圈額定電流I2n統(tǒng)一為5（1或0.5）安，所以電流互感器額定互感比亦已標(biāo)準(zhǔn)化。kn還可以近似地表示為互感器一、二次線圈的匝數(shù)比，即kn≈kN=N1/N2式中N1.N2為一、二線圈的匝數(shù)。武漢電流互感器都有哪些</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3050658.html</p></div></div></div></div></div><div id="pz7kcel" class="page-right twoColRt"><div 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