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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="wkmbtfh" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>北京**率DC-DC直流電源廠家電話,DC-DC直流電源</p><p><span>***更新：</span>2020-12-30 10:14:19</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8tno2ln" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市保益新能電氣有限公司</a></p><p><span>聯(lián)系人：</span>葉立民</p><p><span>郵箱: </span>1301978383@qq.com</p><p><span>電話: </span>18675588113</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.boynelectric.com</p><p><span>手機: </span>0755-21070344</p><p><span>地址: </span>大浪街道浪口社區(qū)華榮路496號德泰工業(yè)區(qū)1號廠房4層402</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="jdacub8" class="page-proshow02"><p class="title">詳細說明</p><div id="utlnu8n" class="box"><p><p style="text-indent:25px">DC-DC電源模塊常見故障及解決方案：入電壓過高針對電源模塊輸入?yún)?shù)異常——輸入電壓過高。這種異常輕則導(dǎo)致系統(tǒng)無法正常工作,重則會燒毀電路。那么輸入電壓過高通常是哪些原因造成的呢。1.輸出端懸空或無負載;2.輸出端負載過輕,輕于10%的額定負載;3.輸入電壓偏高或干擾電壓。針對這一類問題,可以通過調(diào)整輸出端的負載或調(diào)整輸入電壓范圍,具體如下所示:1.確保輸出端不小于少10%的額定負載,若實際電路工作中會有空載現(xiàn)象,就在輸出端并接一個額定功率10%的假負載;2.更換一個合理范圍的輸入電壓,存在干擾電壓時要考慮在輸入端并上TVS管或穩(wěn)壓管。DC-DC直流電源一般按照事故照明，北京**率DC-DC直流電源廠家電話，北京**率DC-DC直流電源廠家電話、輔助設(shè)施，北京**率DC-DC直流電源廠家電話、信號回路、保護及控制回路、整流裝置和蓄電池回路。北京**率DC-DC直流電源廠家電話</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京**率DC-DC直流電源廠家電話,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338812711808/1470393.png"></div><p style="text-indent:25px">DC-DC直流電源輸入濾波電容器的選擇：鋁電解電容器的額定電壓的1.3倍作為電容器的浪涌電壓，工作電壓高于160V時，是額定工作電壓+50V作為浪涌電壓，這是生產(chǎn)廠家保證的電壓，可以允許在短時間內(nèi)承受此電壓。電容器處于浪涌電壓時，電流會很大，如果時間太長，會爆開。所以鋁電容器應(yīng)該選用額定電壓稍高的，實際工作電壓為標稱額定電壓的70~80%為宜，所以選用額定電壓值為400V的鋁電解電容。由于模塊電源體積的限制，在85～265Vac的輸入范圍內(nèi)，前級儲能鋁電解電容的容值一般選取2倍于輸出功率的值，即2.5*2=5，綜上，鋁電解電容的取值以4.7μF/400V為宜。北京**率DC-DC直流電源廠家電話DC-DC直流電源分立元件組成的直流穩(wěn)壓電路、單片集成串聯(lián)型線性直流穩(wěn)壓電路。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京**率DC-DC直流電源廠家電話,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338658209856/1967038.png"></div><p style="text-indent:25px">使用DC-DC電源模塊要注意什么：1、因為DC-DC電源模塊是選用開關(guān)振蕩電路來完成的，其本身也會發(fā)生共模、差模噪聲的攪擾，關(guān)于對紋波噪聲需求較高的場合可在DC-DC電源模塊的輸出端外接無源LC濾波網(wǎng)絡(luò)或RC（損耗較大），以進一步下降電源紋波噪聲，可是要注意L本身諧振頻率要遠高于模塊的開關(guān)頻率，答應(yīng)經(jīng)過的電流值zui好在模塊輸入電流的兩倍以上，內(nèi)阻要小，以下降直流損耗。2、為確保模塊電源長時間作業(yè)的可靠性應(yīng)使到模塊作業(yè)在10%額定功率以上，以避免模塊因為空載或輕載致使輸出電壓不穩(wěn)而影響電路作業(yè)，若是負載功耗的確較小，能夠采和外接假負載的方法在輸出端的+Vo與0V及-Vo與0V之間并上一10%額定功率的假負載（電阻），以進步商品的可靠性。</p><p style="text-indent:25px">DC-DC直流電源穩(wěn)壓電源直流穩(wěn)壓電源電路：由TOP224P構(gòu)成的 12V、20W開關(guān)直流穩(wěn)壓電源電路如圖所示。電路中使用兩片集成電路：TOP224P 型三端單片開關(guān)電源（IC1），PC817A型線性光耦合器（IC2）。交流電源經(jīng)過UR和Cl整流濾波后產(chǎn)生直流高壓Ui，給高頻變壓器T的一次繞組供電。VDz1和VD1能將漏感產(chǎn)生的尖峰電壓鉗位到安全值，并能衰減振鈴電壓。VDz1采用反向擊穿電壓為200V的P6KE200型瞬態(tài)電壓抑制器，VDl選用1A／600V的UF4005型超快恢復(fù)二極管。二次繞組電壓通過V砬、C2、Ll和C3整流濾波，獲得12V輸出電壓Uo。Uo值是由VDz2穩(wěn)定電壓Uz2、光耦中LED的正向壓降UF、R1上的壓降這三者之和來設(shè)定的。DC-DC直流電源各斷路器應(yīng)配備跳閘報警觸點。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京**率DC-DC直流電源廠家電話,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338773776245/4701271.png"></div><p style="text-indent:25px">DC-DC直流電源屏的工作原理及應(yīng)用：絕緣監(jiān)測系統(tǒng)可以保護直流屏因外設(shè)或自系統(tǒng)接地而損壞自身設(shè)備或外部設(shè)備。蓄電池的配備及其合理選擇可以保證系統(tǒng)在斷電的情況下正常運作，并可避免直流屏本身的損壞而造成對系統(tǒng)供電的間斷。充電機一般都選用的是電力**高頻開關(guān)電源模塊。其人性化的設(shè)計使系統(tǒng)設(shè)計簡單化，并且可靠性較佳，而且它的價格也比較合理。通訊系統(tǒng)能夠為上位機提供詳細的直流屏運行情況，并可提供本遠地報警功能，還可以應(yīng)用戶的要求而選配微機絕緣監(jiān)測單元以實現(xiàn)饋出支路的小電流絕緣監(jiān)測。總之，直流屏是一種較為理想的蓄電池DC-DC直流電源屏，具備能量大，體積小，電壓穩(wěn)定，**內(nèi)阻的輸出特性。DC-DC直流電源兩路交流電源應(yīng)分別取自站用電不同段交流母線。北京**率DC-DC直流電源廠家電話</p><p style="text-indent:25px">DC-DC直流電源模塊的外接電容C2、C3選用低內(nèi)阻的鉭電容。北京**率DC-DC直流電源廠家電話</p><p> DC-DC直流電源的選擇要求： </p> <p> 1）蓄電池出口應(yīng)選擇直流斷路器（應(yīng)帶有輔助觸點和報警觸點），并且選擇帶有短延時間60ms的三段可選擇保護直流斷路器（L：過載長延時脫扣器、I：短路瞬時脫扣器、S：短路短延時脫扣器）以確保級差配合的可靠性。其額定電流應(yīng)按照蓄電池1h放電率電流選擇，同時滿足1min放電電流下不動作，且應(yīng)與直流饋線回路保護電器相配合。 </p> <p> 2）充電裝置出口應(yīng)選擇直流斷路器（應(yīng)帶有輔助觸點和報警觸點），并且選擇帶有短延時時間60ms的三段可選擇保護直流斷路器（L：過載長延時脫扣器、I：短路瞬時脫扣器、S：短路短延時脫扣器）以確保級差配合的可靠性。其額定電流按照充電裝置額定輸出電流乘可靠系數(shù)（可靠系數(shù)≥）。充電裝置直流側(cè)出口宜采用無極性直流斷路器。 </p> <p> 3）直流饋電屏各支路應(yīng)選擇直流斷路器（應(yīng)帶有輔助觸點和報警觸點），并且選擇帶有短延時時間30ms的三段可選擇保護直流斷路器（L：過載長延時脫扣器、I：短路瞬時脫扣器、S：短路短延時脫扣器）以確保級差配合的可靠性。北京**率DC-DC直流電源廠家電話</p><p style="text-indent:25px">深圳市保益新能電氣有限公司主要經(jīng)營范圍是電工電氣，擁有一支專業(yè)技術(shù)團隊和良好的市場口碑。保益新能致力于為客戶提供良好的UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造電工電氣良好品牌。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2630037.html</p></div></div></div></div></div><div id="ik2ryse" class="page-right twoColRt"><div id="bvsuw8g" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="p3i39ta" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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