UTX-1000A

分類(lèi)：
選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂(yōu)
大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
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描述

UTX-1000A

籠型電機(jī)修理時(shí)未裝兩端蓋之前，繞組對(duì)機(jī)殼絕緣良好。裝上后，絕緣電阻降低。這種現(xiàn)象可判斷故障發(fā)生在繞組的兩端部。造成絕緣電阻降低的原因，可能是漆包線上漆膜有局部碰破或繞線模偏大使繞組端部伸出較長(zhǎng)。因端蓋罩上后，端蓋內(nèi)壁靠近或接觸故障點(diǎn)，所以使繞組絕緣電阻降低。要排除這種故障，首先應(yīng)判斷故障在電機(jī)哪一端。
判斷方法是：先裝一頭端蓋，用500V絕緣電阻表測(cè)繞組的絕緣電阻，如很低，則說(shuō)明這端繞組有故障存在。然后，拆下這頭端蓋，再裝上另一頭端蓋，測(cè)量繞組的絕緣電阻，如也低，則說(shuō)明另一端也有故障存在。在拆、裝端蓋的過(guò)程中，轉(zhuǎn)子可不裝。確定故障端后，一般對(duì)繞組端部稍微整形一下，并涂些絕緣漆即可，如未解決問(wèn)題，則可在繞組端部外側(cè)容易與端蓋內(nèi)側(cè)接觸處墊上一層薄膜青殼紙，故障一般可消除。
尋找接地點(diǎn)的方法有如下幾點(diǎn)：
仔細(xì)檢查引出線和槽子兩端，發(fā)現(xiàn)引出線完好，槽子兩端槽口絕緣均無(wú)損壞，電機(jī)內(nèi)外很干凈，各處無(wú)灰塵及油污，這說(shuō)明接地點(diǎn)在槽內(nèi)。
解開(kāi)定子繞組的Y型連接點(diǎn)，分別測(cè)量各相對(duì)地絕緣電阻，查出有接地故障的相。
用一臺(tái)單相調(diào)壓器，其輸出端的相線接到有接地故障相的一端引出線上，零線接電機(jī)機(jī)殼，然后將調(diào)壓器從零開(kāi)始升壓，至槽內(nèi)冒煙，這是立即將調(diào)壓器輸出電壓將為零并切斷電源，冒煙處就是接地點(diǎn)。整個(gè)操作過(guò)程都要注意安全，要將電機(jī)放在一塊絕緣墊上，切斷電源前人身不能接觸電機(jī)。處理方法是：把有接地槽的槽楔小心去除，然后將電機(jī)放入烘箱內(nèi)加熱，烘軟繞組，然后仔細(xì)將槽內(nèi)線匝取出，檢查各導(dǎo)線絕緣。絕緣被破壞的要涂漆、烘干，然后重新在槽內(nèi)放置槽絕緣紙，再將所取出的線匝放入槽內(nèi)，打入槽楔，繞組浸漆、烘干。如發(fā)現(xiàn)漆包線已被燒斷，要將兩根斷線頭分別拉到繞組的端部，然后找一根線徑相同的漆包線放入槽內(nèi)，在繞組兩端部接線。接頭要絞合錫焊、涂漆、烘干，再套上絕緣套管。捆扎端部時(shí)，要注意捆扎接頭。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。

主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門(mén)子，摩托羅拉，安川。力士樂(lè)。ACSO，橫河等進(jìn)口品牌。 專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家

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PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂(yōu)大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營(yíng)：本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門(mén)子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè)，ACSO，力士樂(lè)等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類(lèi)型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測(cè)速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會(huì)一種至于其它的學(xué)習(xí)起來(lái)也就簡(jiǎn)單了。

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