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href="http://www.cdcfah.com/cp/first-_dgdq/">電工電氣</a>?<a href="http://www.cdcfah.com/cp/second-_diyadianqifj/">低壓電器</a>?<a href="http://www.cdcfah.com/cp/third-diyadianqifj_qidongqikb/">起動器</a>?淄博科恩軟啟動器選購淄博科恩電氣自動化技術供應</p><div id="udxgxzg" class="leftbox clearfix"><h1>淄博科恩軟啟動器選購淄博科恩電氣自動化技術供應</h1><div id="ku9srn7" class="proBig"><div id="s2f3pgn" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/4/13/14/636907616797936241_keendianqi_9481264.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wa4ziev" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/4/13/14/636907616797936241_keendianqi_9481264.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3txah73" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</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>產品關鍵詞：</span>淄博科恩軟啟動器選購,科恩軟啟動器</p><p><span>***更新：</span>2020-08-06 18:26:09</p><p><span id="click" >瀏覽次數：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="thgxzwi" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">淄博科恩電氣自動化技術有限公司</a></p><p><span>聯(lián)系人：</span>李寧</p><p><span>郵箱: </span>shandongken198@163.com</p><p><span>電話: </span>13371560696</p><p><span>傳真: </span>0533_2855952</p><p><span>網址: </span></p><p><span>手機: </span>0533-2855952</p><p><span>地址: </span>昌國西路111號魯中五金機電城東區(qū)F-15號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="xrgspbi" class="page-proshow02"><p class="title">詳細說明</p><div id="clkxzby" class="box"><p><p> 高壓軟啟動器生產廠家?guī)私飧邏很泦拥姆诸惻c區(qū)別一、液阻軟啟動器液阻是由電解質形成的電阻，本質是離子導電。它的阻值正比相對的二塊電極板的距離，反比于電解液的電導率，極板距離和電導率都便于控制;液阻的熱容量大。液阻的這兩大特點(阻值可以無級控制和熱容量大)，恰恰是軟起動所需要的。有所謂的熱變液阻軟啟動裝置，通過液阻本身在軟起動過程中的溫升，借助電解液電導率與溫度的正相關性實現(xiàn)無極板伺服機構的軟啟動。但是，其可行性大受質疑;它的限流器件不具備限流能力易控性，裝置對使用環(huán)境溫度要求高，軟起動重復性差。二、磁控軟啟動器磁控軟啟動器即利用鐵磁材料的交流有效磁導率隨直流磁場大小變化的特性，以改變交流繞組的電抗值來實現(xiàn)無級調壓的。磁控軟起動在起動開始時限流作用較強，在軟起動過程中逐漸減弱。電抗器在起動完成后被旁路。三、晶閘管軟啟動器晶閘管軟啟動器是一種集軟啟動、軟停車、輕載節(jié)能和多功能保護于一體的新穎電機控制裝備，又稱為SoftStarter，淄博科恩軟啟動器選購，淄博科恩軟啟動器選購。它不僅實現(xiàn)在整個啟動過程中無沖擊而平滑地啟動電機，而且可根據電動機負載的特性來調節(jié)啟動過程中的參數，如限流值，淄博科恩軟啟動器選購、啟動時間等。此外，它還具有多種對電機保護功能。 </p> <p> 淄博科恩軟啟動器選購</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="淄博科恩軟啟動器選購,科恩軟啟動器" src="http://tyunfile.71360.com/UpLoadFile/2019/4/13/14/636907616797936241_keendianqi_9481264.jpg"></div><p> 采用矢量控制方式的通用變頻器不僅可在調速范圍內與直流電動機相匹配，而且可以控制異步電動機產生的轉矩。轉矩控制根據不同的數學算法其功能結構也不相同，如圖所示是一種典型的采用矢量方式實現(xiàn)的轉矩控制功能框圖。先是根據轉矩設定值計算出轉差頻率，并與變頻器獲得的反饋速度(一般用編碼器PG)或是直接推算的電動機速度相加，在速度限制下輸出同步頻率。很顯然，在轉矩控制方式下，速度調節(jié)器ASR并不起直接作用，也無法控制速度。轉矩控制時，變頻器的輸出頻率自動負載速度的變化，但輸出頻率的變化受設定的加速和減速時間影響，如需要加快的速度，需要將加速和減速時間設得短一些。轉矩分正向轉矩和反向轉矩，其設定可以通過模擬量端子的電平來決定，該轉矩方向與運行指令的方向（即正轉和反轉）無關。當模擬量信號為0～10V時，為正轉矩，即電動機正轉方向的轉矩指令（從電動機的輸出軸看是逆時針轉）；當模擬量信號為-10～0V時，為負轉矩，即電動機反轉方向的轉矩指令（從電動機的輸出軸看是順時針轉）。淄博科恩軟啟動器選購</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="淄博科恩軟啟動器選購,科恩軟啟動器" src="https://tyunfile.71360.com/UploadFile/keendianqi/637235132859755860/5468229.jpg"></div><p style="text-indent:25px">軟啟動是指電機的電壓由零慢慢上升到額定電壓，這樣電機在啟動的過程中啟動電流，由過去的過載沖擊不可控電流變成了可控制的電流，并且可以根據需要來對電機啟動器進行電流的大小調整。如果直接啟動電機軟啟動器對軟啟動器有什么樣的危害呢？ 1.會引起電網電壓的波動交流電動機在全壓下直接啟動，起動電流會達到額定電流的4到7倍，如果電機的容量相對來說比較大時，啟動電流會引起電網電壓的急劇下降，同時還會影響電網和其他設備的正常運行。 2.對電網的影響對于電網的影響會表現(xiàn)在兩個方面（1）超大型的電機直接啟動，大電流對電網的沖擊相當于三相短路對電網的沖擊，這時會常常應發(fā)發(fā)動機的振蕩，使電網失去穩(wěn)定。（2）起動電流中含有大量的高次諧波，會與電網電路參數引起高頻諧振，造成繼電保護誤動作、自動控制失靈等故障。 3.傷害電機絕緣（1）大電流所產生的焦耳熱反復作用于導線外絕緣，使絕緣加速老化、壽命降低。（2）大電流產生的機械力使導線相互摩擦，降低絕緣壽命。（3）高壓開關合閘時觸頭的抖動現(xiàn)象會在電機定子繞組上產生操作過電壓，有時會達到外加電壓的5倍以上，這樣高的過電壓會對電機絕緣造成極大。</p><p> 它的主要構成是串接于電源與被控電機之間的三相反并聯(lián)閘管及其電子控制電路。運用不同的方法，控制三相反并聯(lián)閘管的導通角，使被控電機的輸入電壓按不同的要求而變化，就可實現(xiàn)不同的功能。變頻器（Variable-frequencyDrive，VFD）是應用變頻技術與微電子技術，通過改變電機工作電源頻率方式來控制交流電動機的電力控制設備。變頻器主要由整流（交流變直流）、濾波、逆變（直流變交流）、制動單元、驅動單元、檢測單元微處理單元等組成。變頻器靠內部IGBT的開斷來調整輸出電源的電壓和頻率，根據電機的實際需要來提供其所需要的電源電壓，進而達到節(jié)能、調速的目的，另外，變頻器還有很多的保護功能，如過流、過壓、過載保護等等。隨著工業(yè)自動化程度的不斷提高，變頻器也得到了非常的應用。軟啟動器和變頻器是兩種完全不同用途的產品。變頻器是用于需要調速的地方，其輸出不但改變電壓而且同時改變頻率；軟啟動器實際上是個調壓器，用于電機起動時，輸出只改變電壓并沒有改變頻率。變頻器具備所有軟起動器功能，但它的價格比軟啟動器貴得多，結構也復雜得多。軟啟動器只是改變電源電壓，相當于降壓起動器。變頻器要比軟啟動器復雜得多，價格也貴得多。變頻器也有軟啟動功能。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="淄博科恩軟啟動器選購,科恩軟啟動器" src="http://tyunfile.71360.com/UpLoadFile/2019/4/13/14/636907616797936241_keendianqi_9000823.jpg"></div><p> 電機軟啟動器是一種集軟啟動、軟停車、輕載節(jié)能和多功能保護于一體的新穎電機控制裝置，的應用于風機、水泵、輸送類及壓縮機等負載，是傳統(tǒng)的星/三角轉換、自耦降壓磁控降壓等降壓設備的理想換代產品。在某些變頻器大材小用的場合，也能使用軟啟動器來進行代替。節(jié)約了成本的同時，也使不必要的浪費得到控制。那么是哪些方面造就了電機軟啟動器的高性價比呢?1、啟動方式：根據負載特點選擇不同的啟動模式及參數設置，可很大程度的使電動機實現(xiàn)比較好的啟動效果，三種啟動方式：電壓斜坡啟動——可得到比較大的輸出扭矩;限流啟動——可有效地限制啟動電流;點動——可實現(xiàn)試車調試功能。2、高技術性能：由于采用了高性能微處理器及強大的軟件支持功能使控制電路得以簡化，無需對電路參數進行調整，即可獲得一致、準確及快速的執(zhí)行速度;**度抗干擾功能。3、高可靠性：電機軟啟動器所有電器元件均經過嚴格的篩選，其主控板還須經過72小時高溫循環(huán)試驗和振動試驗，從而保證了出廠產品的高可靠性。4、優(yōu)化的結構：獨特緊湊的模塊化結構及上進線下出線的連接方式，非常方便用戶的集成、成套。5、鍵盤設置功能：電機軟啟動器擁有便捷直觀的操作顯示鍵盤，可根據不同負載。淄博科恩軟啟動器選購</p><p style="text-indent:25px">淄博科恩軟啟動器選購</p><p> 高壓軟起動器對信號的檢測比低壓軟起動器要求更高。高壓軟起動器所在的環(huán)境存在著大量的電磁干擾，并且高壓軟起動器所用的真空接觸器和真空斷路器在其分斷和閉合過程中會產生大量的電磁干擾。所以對檢測到的信號不僅要進行硬件濾波，也要進行軟件濾波，去掉干擾信號。軟起動器在完成起動過程后，要切換到旁路運行狀態(tài)，如何平滑地切換到運行狀態(tài)，這也是軟起動器的一個難點，如何選準旁路點非常重要。旁路點早了，電流沖擊非常大，即使在低壓條件下，也會造成三相電源中斷路器跳閘，甚至會損壞斷路器。高壓條件下危害更大。旁路點遲了，電機抖動得厲害，影響負載正常工作。因此，旁路信號的硬件檢測電路必須非常精確，并且程序處理也要恰到好處。綜上所述，盡管低壓軟起動器和高壓軟起動器的基本原理一致，但高壓軟起動器存在的諸多技術難題，使得在低壓軟起動器遍地開花的情況下，高壓軟起動器的成熟產品并不多見。淄博科恩軟啟動器選購</p><p style="text-indent:25px">淄博科恩電氣自動化技術有限公司致力于電工電氣，以科技創(chuàng)新實現(xiàn)***管理的追求?？贫鞴罡袠I(yè)多年，始終以客戶的需求為向導，為客戶提供***的[ "科恩變頻器", "防爆柜", "山東變頻器代理", "電機智能軟啟動器" ]。公司堅持以技術創(chuàng)新為發(fā)展引擎，以客戶滿意為動力，目前擁有51~100人專業(yè)人員，年營業(yè)額達到50-100萬元?？贫鞴冀K關注自身，在風云變化的時代，我們對自身的建設毫不懈怠，高度的專注與執(zhí)著使我們在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/830550.html</p></div></div></div></div></div><div id="mq8bdkb" class="page-right twoColRt"><div id="8t3tkho" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kji8ub7" class="recomPic likePro"><a 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