遼寧大型電機(jī) 山東聯(lián)創(chuàng)電機(jī)供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="所謂三相異步電動(dòng)機(jī)的啟動(dòng)是指電動(dòng)機(jī)從接入電源開始轉(zhuǎn)動(dòng)起，到達(dá)到額定轉(zhuǎn)速為止的這一過程。根據(jù)理論分析和實(shí)際測(cè)定，三相異步電動(dòng)機(jī)啟動(dòng)瞬間；定子繞組啟動(dòng)電流很大，可達(dá)額定值的4~7倍。三相異步電動(dòng)機(jī)為什么會(huì)有這么大的啟動(dòng)電流呢？因?yàn)楫惒诫妱?dòng)機(jī)在啟"><meta name="keywords" content="遼寧大型電機(jī),電機(jī)"><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 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tcPro"><section class="home-main container clearfix"><div id="hdk2sll" class="twoCol"><div id="j397xxo" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://www.cdcfah.com/cp/second-dgdq_diandongjive/">電動(dòng)機(jī)</a>?<a href="http://www.cdcfah.com/cp/third-diandongjive_jsbyddjrv/">機(jī)械設(shè)備用電動(dòng)機(jī)</a>?遼寧大型電機(jī) 山東聯(lián)創(chuàng)電機(jī)供應(yīng)</p><div id="i3evhjv" class="leftbox clearfix"><h1>遼寧大型電機(jī) 山東聯(lián)創(chuàng)電機(jī)供應(yīng)</h1><div id="f9uah89" class="proBig"><div id="78jvrdk" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099267886684512_lcdianji_8182965.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="oeqzfri" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099267886684512_lcdianji_8182965.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="k4su2ea" 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>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>遼寧大型電機(jī),電機(jī)</p><p><span>***更新：</span>2020-07-22 22:22:17</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="y9pmtpl" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">山東聯(lián)創(chuàng)電機(jī)有限公司</a></p><p><span>聯(lián)系人：</span>李道松</p><p><span>郵箱: </span>505920191@qq.com</p><p><span>電話: </span>13906437131</p><p><span>傳真: </span>0533_7781170</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0533-7788099</p><p><span>地址: </span>山東省淄博市臨淄區(qū)朱臺(tái)鎮(zhèn)魏家村</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="pgs3mj3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3g3zqxe" class="box"><p><p style="text-indent:25px">所謂三相異步電動(dòng)機(jī)的啟動(dòng)是指電動(dòng)機(jī)從接入電源開始轉(zhuǎn)動(dòng)起，到達(dá)到額定轉(zhuǎn)速為止的這一過程。根據(jù)理論分析和實(shí)際測(cè)定，三相異步電動(dòng)機(jī)啟動(dòng)瞬間；定子繞組啟動(dòng)電流很大，可達(dá)額定值的4~7倍。三相異步電動(dòng)機(jī)為什么會(huì)有這么大的啟動(dòng)電流呢？因?yàn)楫惒诫妱?dòng)機(jī)在啟動(dòng)瞬間轉(zhuǎn)子并不能立馬就轉(zhuǎn)動(dòng)起來，此時(shí)轉(zhuǎn)子電磁感應(yīng)的反電勢(shì)尚未建立起來，所以外電壓全部加在沒有反電勢(shì)的定子繞組上，其電路電流就是外電壓除以繞組的阻抗（用符號(hào)Z表示，是一種對(duì)電流其阻礙作用的能力，單位為歐姆公式Z=V/I表示），所以定子繞組電流很大。這么大的啟動(dòng)電流將帶來以下不良后果：使電網(wǎng)電壓產(chǎn)生波動(dòng)（特別是容量較大的電動(dòng)機(jī)啟動(dòng)時(shí)），從而影響到接在電網(wǎng)上的其它設(shè)備的正常運(yùn)行。使電動(dòng)機(jī)繞組發(fā)熱，絕緣老化，遼寧大型電機(jī)，從而縮短了電動(dòng)機(jī)的使用壽命。特別是對(duì)經(jīng)常需要啟動(dòng)的電動(dòng)機(jī)影響較大。啟動(dòng)瞬間，由于三相異步電動(dòng)機(jī)轉(zhuǎn)子電路功率因素較低，啟動(dòng)轉(zhuǎn)矩并不很大，遼寧大型電機(jī)。如果啟動(dòng)轉(zhuǎn)矩小于負(fù)載轉(zhuǎn)矩則電動(dòng)機(jī)將無法啟動(dòng)。綜上所述，三相異步電動(dòng)機(jī)啟動(dòng)時(shí)的主要缺點(diǎn)是啟動(dòng)電流較大。為了減小啟動(dòng)電流，遼寧大型電機(jī)，必須采用適當(dāng)?shù)膯?dòng)方法。聯(lián)創(chuàng)電機(jī)熱情服務(wù)，確保產(chǎn)品質(zhì)量無后顧之憂。遼寧大型電機(jī)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧大型電機(jī),電機(jī)" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099267886684512_lcdianji_8182965.jpg"></div><p> 三相異步電機(jī)（Triple-phaseasynchronousmotor）是感應(yīng)電動(dòng)機(jī)的一種，是靠同時(shí)接入380V三相交流電流（相位差120度）供電的一類電動(dòng)機(jī)，由于三相異步電動(dòng)機(jī)的轉(zhuǎn)子與定子旋轉(zhuǎn)磁場(chǎng)以相同的方向、不同的轉(zhuǎn)速成旋轉(zhuǎn)，存在轉(zhuǎn)差率，所以叫三相異步電動(dòng)機(jī)。三相異步電動(dòng)機(jī)轉(zhuǎn)子的轉(zhuǎn)速低于旋轉(zhuǎn)磁場(chǎng)的轉(zhuǎn)速，轉(zhuǎn)子繞組因與磁場(chǎng)間存在著相對(duì)運(yùn)動(dòng)而產(chǎn)生電動(dòng)勢(shì)和電流，并與磁場(chǎng)相互作用產(chǎn)生電磁轉(zhuǎn)矩，實(shí)現(xiàn)能量變換。與單相異步電動(dòng)機(jī)相比，三相異步電動(dòng)機(jī)運(yùn)行性能好，并可節(jié)省各種材料。按轉(zhuǎn)子結(jié)構(gòu)的不同，三相異步電動(dòng)機(jī)可分為籠式和繞線式兩種?；\式轉(zhuǎn)子的異步電動(dòng)機(jī)結(jié)構(gòu)簡(jiǎn)單、運(yùn)行可靠、重量輕、價(jià)格便宜，得到了普遍的應(yīng)用，其主要缺點(diǎn)是調(diào)速困難。繞線式三相異步電動(dòng)機(jī)的轉(zhuǎn)子和定子一樣也設(shè)置了三相繞組并通過滑環(huán)、電刷與外部變阻器連接。調(diào)節(jié)變阻器電阻可以改善電動(dòng)機(jī)的起動(dòng)性能和調(diào)節(jié)電動(dòng)機(jī)的轉(zhuǎn)速。海南電機(jī)零配件聯(lián)創(chuàng)電機(jī)具備雄厚的實(shí)力和豐富的實(shí)踐經(jīng)驗(yàn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧大型電機(jī),電機(jī)" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099267931114353_lcdianji_7380131.jpg"></div><p style="text-indent:25px">異步電動(dòng)機(jī)的氣隙是很小的，中小型電動(dòng)機(jī)一般為0.2～2mm。氣隙越大，磁阻越大，要產(chǎn)生同樣大小的磁場(chǎng)，就需要較大的勵(lì)磁電流。由于氣隙的存在，異步電動(dòng)機(jī)的磁路磁阻遠(yuǎn)比變壓器為大，因而異步電動(dòng)機(jī)的勵(lì)磁電流也比變壓器的大得多。變壓器的勵(lì)磁電流約為額定電流的3%，異步電動(dòng)機(jī)的勵(lì)磁電流約為額定電流的30%。勵(lì)磁電流是無功電流，因而勵(lì)磁電流越大。繞組是電動(dòng)機(jī)的組成部分，老化、受潮、受熱、受侵蝕、異物侵入、外力的沖擊都會(huì)造成對(duì)繞組的傷害，電機(jī)過載、欠電壓、過電壓，缺相運(yùn)行也能引起繞組故障。繞組故障一般分為繞組接地、短路、開路、接線錯(cuò)誤。如今分別說明故障現(xiàn)象、產(chǎn)生的原因及檢查方法。</p><p> 高壓電機(jī)直接啟動(dòng)就是在全電壓條件下直接啟動(dòng)電機(jī)。如果電網(wǎng)條件允許，可以采用直接啟動(dòng)。但在實(shí)際生產(chǎn)過程中往往由于電網(wǎng)容量有限，很少采用直接啟動(dòng)。由于采用直接啟動(dòng)時(shí)，啟動(dòng)電流大，使電壓下降幅度較大，對(duì)于供電系統(tǒng)有較大的沖擊，如果壓降超過一定值，有可能導(dǎo)致上級(jí)變電所跳閘。故在實(shí)際運(yùn)行中很少采用這種直接啟動(dòng)方法。串聯(lián)電抗器啟動(dòng)就是在電機(jī)啟動(dòng)的時(shí)候串入電抗器，以限制和降低電機(jī)啟動(dòng)時(shí)的啟動(dòng)電流及電網(wǎng)壓降，當(dāng)電機(jī)運(yùn)行穩(wěn)定且電流達(dá)到一定值時(shí)，切除電抗器變?yōu)殡姍C(jī)直接啟動(dòng)模式。由于啟動(dòng)過程中電機(jī)端的電壓也下降，容易導(dǎo)致啟動(dòng)轉(zhuǎn)矩不夠，在啟動(dòng)過程中還會(huì)出現(xiàn)一個(gè)二次沖擊的過程。自耦變壓器啟動(dòng)是指電動(dòng)機(jī)啟動(dòng)時(shí)利用自耦變壓器來降低加在電動(dòng)機(jī)定子繞組上的啟動(dòng)電壓。待電動(dòng)機(jī)啟動(dòng)后，再使電動(dòng)機(jī)與自耦變壓器脫離，從而在全壓下正常運(yùn)行。優(yōu)點(diǎn)是可以按容許的啟動(dòng)電流和所需的啟動(dòng)轉(zhuǎn)矩來選擇自耦變壓器副邊的不同抽頭實(shí)現(xiàn)降壓?jiǎn)?dòng)，而且不論電動(dòng)機(jī)定子繞組采用星形接法或三角形接法都可以使用。缺點(diǎn)是設(shè)備的體積較大，因而成本較貴。公司生產(chǎn)工藝得到了長(zhǎng)足的發(fā)展，優(yōu)良的品質(zhì)使我們的產(chǎn)品****各地。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧大型電機(jī),電機(jī)" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099267932828813_lcdianji_4664347.jpg"></div><p> 電動(dòng)機(jī)的控制系統(tǒng)由開關(guān)、保險(xiǎn)絲、主副接觸器、繼電器、溫度、感應(yīng)裝置等組成，相對(duì)較復(fù)雜。故障多種多樣，常需要借助控制原理圖分析排查。平時(shí)要注意保持控制箱內(nèi)、外清潔干燥，不能有水、油污，定期（每周）用小風(fēng)機(jī)吹干凈箱內(nèi)各元件及接線柱、排上的灰塵，或用刷子蘸電器清潔劑刷干凈，以免影響接觸器、繼電器的工作或絕緣。設(shè)有烘潮電阻的控制箱，一般不要隨意關(guān)掉加熱開關(guān)。還應(yīng)保持箱體接地可靠，預(yù)防觸電。對(duì)采用星形-三角形(Y-△)方法啟動(dòng)的（轉(zhuǎn)換延時(shí)約5秒）電動(dòng)機(jī)，要察看其轉(zhuǎn)換啟動(dòng)情況是否正常。通常，生產(chǎn)廠家對(duì)電動(dòng)機(jī)的啟動(dòng)周期(即每分鐘啟動(dòng)次數(shù))有嚴(yán)格規(guī)定，會(huì)在起動(dòng)控制箱上有*示標(biāo)貼，提醒使用者防止電動(dòng)機(jī)因頻繁啟動(dòng)而損壞，同時(shí)，也為防止起動(dòng)控制箱內(nèi)的一些電器組件(如起動(dòng)電抗器等)發(fā)熱燒毀。所以，對(duì)起停頻繁或電流大的電動(dòng)機(jī)控制系統(tǒng)，應(yīng)縮短檢查保養(yǎng)周期。定期檢查熱過載繼電器的保護(hù)功能(可撥動(dòng)旁邊的小紅標(biāo)色制)其設(shè)定動(dòng)作值不要超過電動(dòng)機(jī)銘牌的額定電流值，確保能起到過載保護(hù)的作用。 </p> <p> <br /> 聯(lián)創(chuàng)電機(jī)以創(chuàng)百年企業(yè)、樹百年品牌為使命，傾力為客戶創(chuàng)造更大利益！海南電機(jī)零配件</p><p style="text-indent:25px">聯(lián)創(chuàng)電機(jī)過硬的產(chǎn)品質(zhì)量、質(zhì)量的售后服務(wù)、認(rèn)真嚴(yán)格的企業(yè)管理，贏得客戶的信譽(yù)。遼寧大型電機(jī)</p><p> 旋轉(zhuǎn)電機(jī)的故障和損壞大部分是由于繞組絕緣的損壞而引起的,其中繞組的匝間絕緣占50%左右,而且一旦損壞后果將是嚴(yán)重的。匝間絕緣短路基本上是由于電機(jī)在各種過電壓作用下匝間沖擊電壓值超過部分繞組匝間絕緣的工作電壓造成的,有一部分是線圈和繞組在制造過程中的機(jī)械損傷造成的,另外還有高壓電機(jī)繞組內(nèi)部間隙所產(chǎn)生的局部放電、高壓繞組的電暈腐蝕所引起的。上述因素引起的損壞都直接或間接與電機(jī)所用的繞組線性能有關(guān)。隨著旋轉(zhuǎn)電機(jī)的更新?lián)Q代,各種特種電機(jī)和耐高溫電機(jī)的需要,開發(fā)新型的繞組線勢(shì)在必行。遼寧大型電機(jī)</p><p style="text-indent:25px">山東聯(lián)創(chuàng)電機(jī)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。公司自2003-05-30成立以來，投身于[ "大型高壓電機(jī)", "中型高壓電機(jī)", "電機(jī)維修" ]，是機(jī)械及行業(yè)設(shè)備的主力軍。依托效率源扎實(shí)的技術(shù)積累、完善的產(chǎn)品體系、深厚的行業(yè)基礎(chǔ)，目前擁有員工數(shù)11~50人，年?duì)I業(yè)額達(dá)到50-100萬元。聯(lián)創(chuàng)電機(jī)供應(yīng)始終關(guān)注機(jī)械及行業(yè)設(shè)備市場(chǎng)，以敏銳的市場(chǎng)洞察力以準(zhǔn)確定位，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br /><p>文章來源地址: 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