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id="yhjl22v" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/yonglekeji/637205601035400391/4070147.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="cl7gs88" 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>云南省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>昆明低壓變頻器銷售公司,變頻器</p><p><span>***更新：</span>2020-12-07 03:06:11</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="tm7h2sg" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">云南永樂科技有限公司</a></p><p><span>聯(lián)系人：</span>姜先生</p><p><span>郵箱: </span>1738252619@qq.com</p><p><span>電話: </span>18987299299</p><p><span>傳真: </span>0871_63853456</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0871-63853456</p><p><span>地址: </span>昆明市官渡區(qū)昌宏路宸瑞五金機(jī)電市場(chǎng)B5-4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="mpmt329" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8r3pyuw" class="box"><p><p> <span style="font-size:14px;">變頻器控制原理：</span> </p> <p> <span style="font-size:14px;">確認(rèn)變頻器</span><span style="font-size:14px;">的安裝環(huán)境</span> </p> <p> <span style="font-size:14px;">1）工作溫度。變頻器內(nèi)部是大功率的電子元件，極易受到工作溫度的影響，產(chǎn)品一般要求為0～55℃，但為了保證工作安全、可靠，使用時(shí)應(yīng)考慮留有余地，蕞好控制在40℃以下。在控制箱中，變頻器一般應(yīng)安裝在箱體上部，并嚴(yán)格遵守產(chǎn)品說明書中的安裝要求，不允許把發(fā)熱元件或易發(fā)熱的元件緊靠變頻器的底部安裝。</span> </p> <p> <span style="font-size:14px;">2）腐蝕性氣體。使用環(huán)境如果腐蝕性氣體濃度大，不僅會(huì)腐蝕元器件的引線、印刷電路板等，而且還會(huì)加速塑料器件的老化，降低絕緣性能。</span> </p> <p> <span style="font-size:14px;">3）環(huán)境溫度。溫度太高且溫度變化較大時(shí)，變頻器內(nèi)部易出現(xiàn)結(jié)露現(xiàn)象，其絕緣性能就會(huì)降低，甚至可能引發(fā)短路事故。必要時(shí)，必須在箱中增加干燥劑和加熱器。在水處理間，一般水汽都比較重，昆明低壓變頻器銷售公司，如果溫度變化大的話，昆明低壓變頻器銷售公司，這個(gè)問題會(huì)比較突出，昆明低壓變頻器銷售公司。</span> </p> <p> <br /> 公司從每一個(gè)環(huán)節(jié)、每一個(gè)細(xì)節(jié)嚴(yán)把質(zhì)量關(guān)和安全關(guān)。昆明低壓變頻器銷售公司</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明低壓變頻器銷售公司,變頻器" src="http://tyunfile.71360.com/UploadFile/yonglekeji/637205601035400391/4070147.jpg"></div><p style="text-indent:25px"><span style="font-size:14px;">單元串聯(lián)型變頻器：這是近幾年才發(fā)展起來的一種電路拓?fù)浣Y(jié)構(gòu)，它主要由輸入變壓器、功率單元和控制單元三大部分組成。采用模塊化設(shè)計(jì)，由于采用功率單元相互串聯(lián)的辦法解決了高壓的難題而得名，可直接驅(qū)動(dòng)交流電動(dòng)機(jī)，無需輸出變壓器，更不需要任何形式的濾波器。整套變頻器共有18個(gè)功率單元，每相由6臺(tái)功率單元相串聯(lián)，并組成Y形連接，直接驅(qū)動(dòng)電機(jī)。每臺(tái)功率單元電路、結(jié)構(gòu)完全相同，可以互換，也可以互為備用。變頻器的輸入部分是一臺(tái)移相變壓器，原邊Y形連接，副邊采用沿邊三角形連接，共18副三相繞組，分別為每臺(tái)功率單元供電。它們被平均分成Ⅰ、Ⅱ、Ⅲ三大部分，每部分具有6副三相小繞組，之間均勻相位偏移10度。<strong>（云南永樂科技變頻器銷售、維修）</strong></span>昆明建筑機(jī)械**變頻器維修變頻器維修哪家公司好？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明低壓變頻器銷售公司,變頻器" src="http://tyunfile.71360.com/UploadFile/yonglekeji/637205586874160156/9746724.jpg"></div><p> <span style="font-size:14px;">在變頻器實(shí)際應(yīng)用中，由于國(guó)內(nèi)客戶除少數(shù)有**機(jī)房外，大多為了降低成本，將變頻器直接安裝于工業(yè)現(xiàn)場(chǎng)。工作現(xiàn)場(chǎng)一般有灰塵大、溫度高、濕度大的問題，還有如鋁行業(yè)中有金屬粉塵、腐蝕性氣體等等。因此必須根據(jù)現(xiàn)場(chǎng)情況做出相應(yīng)的對(duì)策：</span> </p> <p> <span style="font-size:14px;">1、變頻器應(yīng)該安裝在控制柜內(nèi)部。</span> </p> <p> <span style="font-size:14px;">2、變頻器較好安裝在控制柜內(nèi)的中部；變頻器要垂直安裝，正上方和正下方要避免安裝可能阻擋排風(fēng)、進(jìn)風(fēng)的大元件。</span> </p> <p> <span style="font-size:14px;">3、變頻器上、下部邊緣距離控制柜頂部、底部、或者隔板、或者必須安裝的大元件等的蕞小間距，應(yīng)該大于300 mm。</span> </p> <p> <span style="font-size:14px;">4、如果特殊用戶在使用中需要取掉鍵盤，則變頻器面板的鍵盤孔，一定要用膠帶嚴(yán)格密封或者采用假面板替換，防止粉塵大量進(jìn)入變頻器內(nèi)部。</span> </p> <p> <span style="font-size:14px;"><strong>（云南永樂科技變頻器銷售、維修</strong></span><strong>）</strong> </p><p> <span style="font-size:14px;">變頻器由多種部件組成，其中一些部件經(jīng)長(zhǎng)期工作后其性能會(huì)逐步降低、老化，這也是變頻器發(fā)作毛病的主要緣由，為了保證設(shè)備長(zhǎng)期的正常運(yùn)轉(zhuǎn)，下列器件應(yīng)定期改換：</span> </p> <p> <span style="font-size:14px;">1、變頻器冷卻風(fēng)扇</span> </p> <p> <span style="font-size:14px;">變頻器的功率模塊是是發(fā)熱蕞嚴(yán)重的器件，其連續(xù)工作所產(chǎn)生的熱量必需要及時(shí)排出，普通風(fēng)扇的壽命大約為10kh~40kh。按變頻器連續(xù)運(yùn)轉(zhuǎn)折算為2~3年就要改換一次風(fēng)扇，直接冷卻風(fēng)扇有二線和三線之分，二線風(fēng)扇其中1線為正極，另1線為負(fù)線，改換時(shí)不要接錯(cuò)；三線風(fēng)扇除了正、負(fù)極外還有一根檢測(cè)線，改換時(shí)千萬留意，否則會(huì)惹起變頻器過熱報(bào)警。交流風(fēng)扇普通為220V、380V之分，改換時(shí)電壓等級(jí)不要搞錯(cuò)。</span> </p> <p> <span style="font-size:14px;">2、變頻器濾波電容</span> </p> <p> <span style="font-size:14px;">中間直流回路濾波電容：又稱電解電容，其主要作用就是平滑直流電壓，吸收直流中的低頻諧波，它的連續(xù)工作產(chǎn)生的熱量加上變頻器自身產(chǎn)生的熱量都會(huì)加快其電解液的干涸，直接影響其容量的大小。正常狀況下電容的運(yùn)用壽命為5年左右。</span> 公司的誠(chéng)信、實(shí)力和產(chǎn)品質(zhì)量獲得業(yè)界的認(rèn)可。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明低壓變頻器銷售公司,變頻器" src="http://tyunfile.71360.com/UploadFile/yonglekeji/637205586876523438/5732916.jpg"></div><p style="text-indent:25px"><span style="font-size:14px;">在同一工廠內(nèi)大型電機(jī)一起動(dòng)，運(yùn)轉(zhuǎn)中變頻器就停止，這是為什么？電機(jī)起動(dòng)時(shí)將流過和容量相對(duì)應(yīng)的起動(dòng)電流，電機(jī)定子側(cè)的變壓器產(chǎn)生電壓降，電機(jī)容量大時(shí)此壓降影響也大，連接在同一變壓器上的變頻器將做出欠壓或瞬停的判斷，因而有時(shí)保護(hù)功能（IPE）動(dòng)作，造成停止運(yùn)轉(zhuǎn)。21、什么是變頻分辨率？有什么意義？對(duì)于數(shù)字控制的變頻器，即使頻率指令為模擬信號(hào)，輸出頻率也是有級(jí)給</span><span style="font-size:14px;">定。這個(gè)級(jí)差的蕞小單位就稱為變頻分辨率。變頻分辨率通常取值為0.015~0.5Hz.例如，分辨率為0.5Hz，那么23Hz的上面可變?yōu)?3.5、24.0Hz，因此電機(jī)的動(dòng)作也是有級(jí)的跟隨。這樣對(duì)于像連續(xù)卷取控制的用途就造成問題。在這種情況下，如果分辨率為0.015Hz左右，對(duì)于4級(jí)電機(jī)1個(gè)級(jí)差為1r/min以下，也可充分適應(yīng)。另外，有的機(jī)種給定分辨率與輸出分辨率不相同。（云南永樂科技變頻器銷售、維修）</span>云南變頻器維修公司哪家比較好？昆明建筑機(jī)械**變頻器維修</p><p style="text-indent:25px">變頻器維修公司哪家好？昆明低壓變頻器銷售公司</p><p style="text-indent:25px"><span style="font-size:14px;">變頻器作為使用變頻技能與微電子技能，經(jīng)過改動(dòng)電機(jī)作業(yè)電源頻率方法來操控溝通電動(dòng)機(jī)的電力操控設(shè)備。變頻設(shè)備靠?jī)?nèi)部IGBT的開斷來調(diào)整輸出電源的電壓和頻率，依據(jù)電機(jī)的實(shí)際需求來供給其所需求的電源電壓，從而到達(dá)節(jié)能、調(diào)速的意圖，別的，變頻設(shè)備還有許多的維護(hù)功用，如過流、過壓、過載維護(hù)等等。跟著工業(yè)自動(dòng)化程度的不斷提高，變頻設(shè)備也得到了十分普遍的使用。</span><span style="font-size:14px;">變頻技能誕生布景是溝通電機(jī)無級(jí)調(diào)速的普遍需求。傳統(tǒng)的直流調(diào)速技能因體積大故障率高而使用受限。</span>昆明低壓變頻器銷售公司</p><p style="text-indent:25px">云南永樂科技有限公司致力于建筑、建材，是一家貿(mào)易型的公司。公司業(yè)務(wù)涵蓋變頻器，自動(dòng)化系統(tǒng)集成，自動(dòng)化系統(tǒng)調(diào)試，工業(yè)安防系統(tǒng)等，價(jià)格合理，品質(zhì)有保證。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于建筑、建材行業(yè)的發(fā)展。永樂科技立足于全國(guó)市場(chǎng)，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2296714.html</p></div></div></div></div></div><div id="gkxjlx3" class="page-right twoColRt"><div id="hlnfm8l" class="box01 margin10 clearfix"><h3><a 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