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id="nxuzlc2" class="proBig"><div id="2ac7pyc" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/cdjwjd/637298998768662109/1436764.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="akcc74s" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/cdjwjd/637298998768662109/1436764.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tdfcel8" 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>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>攀枝花科華ups不間斷電源公司,ups不間斷電源</p><p><span>***更新：</span>2020-11-12 04:13:04</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="78uahzy" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都駿為巨達(dá)科技有限公司</a></p><p><span>聯(lián)系人：</span>金鐘</p><p><span>郵箱: </span>1153683998@qq.com</p><p><span>電話: </span>13350099229</p><p><span>傳真: </span>0286_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0286-61602525</p><p><span>地址: </span>成都市成華區(qū)羊子山路88號(hào)4棟2單元8樓16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="3ypryvc" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="cwt83v7" class="box"><p><p> 什么叫有功功率，什么叫無(wú)功功率？ </p> <p> 有功功率指的是能使負(fù)載做功的功率，攀枝花科華ups不間斷電源公司，比如使燈泡發(fā)光，使電路工作等等。做功后又完全變成熱量散發(fā)到大氣中，一去不復(fù)返。 </p> <p> 無(wú)功功率指的是儲(chǔ)存在儲(chǔ)能裝置（器件）中的功率，它可以轉(zhuǎn)化為有功功率。 </p> <p> UPS效率的定義是什么？它表示什么？和功率因數(shù)是一回事嗎？ </p> <p> UPS效率的η的定義是：輸出有功功率P與輸入有功功率P’之比的百分?jǐn)?shù)，攀枝花科華ups不間斷電源公司，攀枝花科華ups不間斷電源公司，即：η=（P/P’）％。它是衡量UPS功耗大小的標(biāo)志。和功率因數(shù)不是一碼事。 UPS系統(tǒng)主要有有三種類型：后備式、互動(dòng)式、在線式。攀枝花科華ups不間斷電源公司</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="攀枝花科華ups不間斷電源公司,ups不間斷電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/cdjwjd/637298998768662109/1436764.png"></div><p style="text-indent:25px"><p>UPS同時(shí)具備穩(wěn)壓、濾波等功能，有些UPS可以在故障或過(guò)載時(shí)改由市電旁路供電。<p>后備式的電壓輸出有較大的波動(dòng)，在170V-260V之間，采用高速繼電器實(shí)現(xiàn)市電和蓄電池之間的轉(zhuǎn)換，轉(zhuǎn)換時(shí)間小于10毫秒。在線式始終使用逆變電路工作，其電壓的穩(wěn)定性高，基本上在220V±5%范圍內(nèi)，對(duì)蓄電池基本不存在轉(zhuǎn)換時(shí)間；與市電旁路轉(zhuǎn)換采用靜態(tài)開關(guān)，轉(zhuǎn)換時(shí)間可以達(dá)到微秒級(jí)。<p>UPS輸出精度高、轉(zhuǎn)換時(shí)間快，同時(shí)造價(jià)較高（約為EPS的兩倍），平時(shí)能耗大（在線式），主機(jī)壽命較短（8-10年）。攀枝花科華ups不間斷電源公司互動(dòng)式：具有濾波功能，抗市電干擾能力強(qiáng)，轉(zhuǎn)換時(shí)間小于4ms，逆變輸出為模擬正弦波，價(jià)格遠(yuǎn)低于在線式；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="攀枝花科華ups不間斷電源公司,ups不間斷電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/cdjwjd/637298998744462891/8621344.png"></div><p> UPS作為保護(hù)性的電源設(shè)備，它的性能參數(shù)具有重要意義，應(yīng)是我們選購(gòu)時(shí)的考慮重點(diǎn)。市電電壓輸入范圍寬，則表明對(duì)市電的利用能力強(qiáng)（減少電池放電）。輸出電壓、頻率范圍小，則表明對(duì)市電調(diào)整能力強(qiáng)，輸出穩(wěn)定。波形畸變率用以衡量輸出電壓波形的穩(wěn)定性,而電壓穩(wěn)定度則說(shuō)明當(dāng)UPS突然由零負(fù)載加到滿負(fù)載時(shí)，輸出電壓的穩(wěn)定性。 </p> <p> 還有UPS效率、功率因數(shù)、轉(zhuǎn)換時(shí)間等都是表征UPS性能的重要參數(shù)，決定了對(duì)負(fù)載的保護(hù)能力和對(duì)市電的利用率。性能越好，保護(hù)能力也越強(qiáng)，總的來(lái)說(shuō)，離線式UPS對(duì)負(fù)載的保護(hù)很差，在線互動(dòng)式略優(yōu)之，在線式則幾乎可以解決所有的常見電力問(wèn)題。當(dāng)然成本也隨著性能的增強(qiáng)而上升。因此用戶在選購(gòu)UPS時(shí)，應(yīng)根據(jù)負(fù)載對(duì)電力的要求程度及負(fù)載的重要性不同,而選取不同類型的UPS。 </p><p>電壓下陷（powersags）：</p><p>指市電電壓有效值介于額定值的80%至85%之間的低壓狀態(tài)，并且持續(xù)時(shí)間達(dá)一個(gè)到數(shù)個(gè)周期。大型設(shè)備開機(jī)，大型電動(dòng)機(jī)啟動(dòng)，或大型電力變壓器接入都可能造成這種問(wèn)題。</p><p>電線噪聲（electricallinenoise）：</p><p>系指射頻干擾(RFI)和電磁干擾（EFI）以及其它各種高頻干擾。馬達(dá)的運(yùn)行、繼電器的動(dòng)作、馬達(dá)控制器的工作、廣播發(fā)射、微波輻射、以及電氣風(fēng)暴等，都會(huì)引起線噪聲干擾。</p><p>頻率偏移（frequencyvariation）：</p><p>系指市電頻率的變化超過(guò)3Hz以上。這主要由應(yīng)急發(fā)電機(jī)的不穩(wěn)定運(yùn)行，或由頻率不穩(wěn)定的電源供電所致。UPS對(duì)齊進(jìn)行存儲(chǔ)后成為穩(wěn)定三相電輸出，該輸出經(jīng)由電纜經(jīng)輸出配電柜后輸出至外部負(fù)載供電。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="攀枝花科華ups不間斷電源公司,ups不間斷電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/cdjwjd/637298998796386719/8451995.png"></div><p style="text-indent:25px"><p>UPS在機(jī)房工程中重要設(shè)備，它能保證正常市電中斷后為弱電系統(tǒng)提供有效的電力保障，不會(huì)因?yàn)闆](méi)有，造成整個(gè)弱電系統(tǒng)癱瘓。UPS的時(shí)間長(zhǎng)短，取決機(jī)房設(shè)備的重要性，但弱電工程中大部分是要求保證4小時(shí)左右，數(shù)據(jù)中心除外，也取決于甲方對(duì)弱電系統(tǒng)的重視與否。<p>組成：UPS電源系統(tǒng)由五部分組成：主路、旁路、電池等電源輸入電路，進(jìn)行AC/DC變換的整流器（REC），進(jìn)行DC/AC變換的逆變器（INV），逆變和旁路輸出切換電路以及蓄能電池。其系統(tǒng)的穩(wěn)壓功能通常是由整流器完成的，整流器件采用可控硅或高頻開關(guān)整流器，本身具有可根據(jù)外電的變化控制輸出幅度的功能，從而當(dāng)外電發(fā)生變化時(shí)（該變化應(yīng)滿足系統(tǒng)要求），輸出幅度基本不變的整流電壓。定期進(jìn)行UPS電池組帶載測(cè)試。攀枝花科華ups不間斷電源公司</p><p style="text-indent:25px">UPS 將市電穩(wěn)壓后供應(yīng)給負(fù)載使用，此時(shí)的UPS就是一臺(tái)交流式電穩(wěn)壓器；攀枝花科華ups不間斷電源公司</p><p> UPS電源的維護(hù) </p> <p> 不間斷電源，是一種含有儲(chǔ)能裝置，以逆變器為主要組成部分的恒壓恒頻的不間斷電源。主要用于給單臺(tái)計(jì)算機(jī)、計(jì)算機(jī)網(wǎng)絡(luò)系統(tǒng)或其它電力電子設(shè)備提供不間斷的電力供應(yīng)。當(dāng)市電輸入正常時(shí)，UPS不間斷電源將市電穩(wěn)壓后供應(yīng)給負(fù)載使用，此時(shí)的UPS就是一臺(tái)交流市電穩(wěn)壓器，同時(shí)它還向機(jī)內(nèi)電池充電；當(dāng)市電中斷（故障停電）時(shí)，UPS立即將機(jī)內(nèi)電池的電能，通過(guò)逆變轉(zhuǎn)換的方法向負(fù)載繼續(xù)供應(yīng)220V交流電，使負(fù)載維持正常工作并保護(hù)負(fù)載軟、硬件不受損壞，UPS不間斷電源設(shè)備通常對(duì)電壓過(guò)大和電壓太低都提供保護(hù)。攀枝花科華ups不間斷電源公司</p><p style="text-indent:25px">成都駿為巨達(dá)科技有限公司主營(yíng)品牌有駿為巨達(dá)科技，發(fā)展規(guī)模團(tuán)隊(duì)不斷壯大，該公司貿(mào)易型的公司。公司致力于為客戶提供安全、質(zhì)量有保證的良好產(chǎn)品及服務(wù)，是一家有限責(zé)任公司（自然）企業(yè)。公司擁有專業(yè)的技術(shù)團(tuán)隊(duì)，具有電池系列，UPS產(chǎn)品，機(jī)房精密空調(diào)等多項(xiàng)業(yè)務(wù)。駿為巨達(dá)科技公司自成立以來(lái)，一直堅(jiān)持走正規(guī)化、專業(yè)化路線，得到了廣大客戶及社會(huì)各界的普遍認(rèn)可與大力支持。</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/1953246.html</p></div></div></div></div></div><div id="rvnuwdp" class="page-right twoColRt"><div id="fnkx3q3" class="box01 margin10 clearfix"><h3><a 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