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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/baoyixinneng/637441725456034827/1056215.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="onpr2o7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/baoyixinneng/637441725456034827/1056215.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="o3su7x4" 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>上海安防監(jiān)控開關(guān)電源采購,安防</p><p><span>***更新：</span>2021-01-20 07:09:46</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="bkcjvr7" 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="73jvhtn" class="page-proshow02"><p class="title">詳細說明</p><div id="3yfwypw" class="box"><p><p style="text-indent:25px">開關(guān)穩(wěn)壓電源的優(yōu)點: 1,內(nèi)部功率損耗小,轉(zhuǎn)換效率高; 2,體積小,重量輕; 3,穩(wěn)壓范圍寬,線性調(diào)整率高; 4,濾波效率大為提高,濾波電容的容量和體積大為減小; 5,電路形式靈活多樣,選擇余地大. 開關(guān)穩(wěn)壓電源的缺點: 開關(guān)穩(wěn)壓電源的缺點: 1,開關(guān)穩(wěn)壓電源存在著較為嚴重的開關(guān)噪聲和干擾; 2,電路結(jié)構(gòu)復(fù)雜,不便于維修; 3，上海安防監(jiān)控開關(guān)電源采購,成本高,可靠性低. 供電方式分為兩種: 供電方式分為兩種:集中供電和分散供電集中供電:指由一臺變壓器(開關(guān)電源)向整個線路中各個負載裝置集中供電; 分散供電:指由多臺變壓器(火牛)自立對各負載進行自立供電; 安防系統(tǒng)供電方式選擇，上海安防監(jiān)控開關(guān)電源采購，上海安防監(jiān)控開關(guān)電源采購。攝像頭數(shù)量比較多，供電的間隔不超越100米時，主張選用PoE供電。上海安防監(jiān)控開關(guān)電源采購</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海安防監(jiān)控開關(guān)電源采購,安防" src="https://tyunfile.71360.com/UploadFile/baoyixinneng/637441725456034827/1056215.png"></div><p style="text-indent:25px">監(jiān)控攝像機電源功率配置的技術(shù)問題：在監(jiān)控攝像機電源的配置方面，也要注意一些細節(jié)，比如不能整個監(jiān)控系統(tǒng)共用一個電源，因為系統(tǒng)維修的時候，經(jīng)常需要打開、關(guān)閉電源。所有的監(jiān)控攝像機在打開電源瞬間同時啟動，啟動電流特別大，對電源的沖擊力很大，嚴重的會燒毀電源。另外一個原因就是所有的監(jiān)控攝像機共用一臺電源，當電源發(fā)生故障時，整個閉路監(jiān)控系統(tǒng)陷入癱瘓。正確的辦法可以通過一個例子來說明，如一個商務(wù)樓有100臺固定監(jiān)控攝像機，總共需要約800W的電源，如需采用PoE供電，正確的配置應(yīng)該是選擇4臺、每臺200W的PoE交換機，這種要求豐潤達16口系列和24口系列PoE交換機都滿足。這樣，當某一臺交換機發(fā)生故障，可以把重要出入口的攝像機接到其它好的交換機上，不至于影響整個系統(tǒng)的工作。成都集中式安防電源批發(fā)廠家采用交流24V，在調(diào)試攝像機的時候，可以選擇電源同步。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海安防監(jiān)控開關(guān)電源采購,安防" src="https://tyunfile.71360.com/UploadFile/baoyixinneng/637441725332743848/8050142.png"></div><p style="text-indent:25px">開關(guān)型線性穩(wěn)壓電源:有一類與變壓器型線性穩(wěn)壓電源不同的線性穩(wěn)壓電源就是開關(guān)型線性穩(wěn)壓電源，它的電路型式主要有單端反激式，單端正激式、半橋式、推挽式和全橋式。它和線性電源的根本區(qū)別在于它變壓器不工作在工頻而是工作在幾十千赫茲到幾兆赫茲。功能管不是工作在飽和及截止區(qū),而是工作在開關(guān)狀態(tài)；開關(guān)電源因此而得名，開關(guān)電源的優(yōu)點是體積小，重量輕，穩(wěn)定可靠；缺點是相對于變壓器型線性穩(wěn)壓電源來說紋波較大，一般≤1%VO(P-P),好的可做到幾十mV(P-P)或更小。</p><p style="text-indent:25px">自立供電與集中供電如何選擇：自立供電與集中供電模式的優(yōu)缺點大致如上，具體怎么選擇，要視實際安裝環(huán)境及客戶要求而定。一般來說，4路以下的監(jiān)控系統(tǒng)采用自立供電各為合適。 4路到16路的監(jiān)控系統(tǒng)，若距離相當，建議選擇集中供電模式。 16路以上的監(jiān)控，可以采用多路集中供電結(jié)合，前提是必須做好前期配置。舉例子：如果一個商務(wù)樓，有100臺固定型網(wǎng)絡(luò)攝像機，每臺攝像機的額定功率是4W，我們該如何配置攝像機電源呢？根據(jù)上面的計算方法，我們計算出，攝像機的額定功率是4W*100臺=400W，攝像機實際使用的功率400W*1.3=520W。考慮損耗后，攝像機需要的功率是520W*1.3=676W 加上電源余量，攝像機較終需要配置的電源功率是676W*1.3=878W 。當開關(guān)閉合時，電源通過開關(guān)K、電感L給負載供電，并將部分電能儲存在電感L以及電容C中。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海安防監(jiān)控開關(guān)電源采購,安防" src="https://tyunfile.71360.com/UploadFile/baoyixinneng/637441725467128676/2991216.png"></div><p style="text-indent:25px">介紹和選購：一、UPS的分類一般情況下，UPS系統(tǒng)分為三大類，為后備式(或離線)、在線互動式和雙轉(zhuǎn)換式(在線)。不同的廠商會提供不同配置的UPS，客戶根據(jù)自己的目標、應(yīng)用、和功能要求，以及他們的產(chǎn)品差異化的愿望，選擇所需要的UPS。二、如何購選UPS不間斷電源1、首先要確定您的數(shù)據(jù)中心的設(shè)備是需要的多大功率的，一般來講普通PC機或工控機的功率在200W左右，蘋果機在300W左右，服務(wù)器在300W與600W之間，其他設(shè)備的功率數(shù)值可以參考該設(shè)備的說明書。只要按要求購買就可以了。2、其次應(yīng)了解UPS的額定功率有兩種表示方法：視在功率(單位VA)與實際輸出功率(單位W)，由于無功功率的存在所以造成了這種差別，兩者的換算關(guān)系為：視在功率*功率因數(shù)=實際輸出功率。所以在購買的時候要計算好。周圍環(huán)境的照度是否滿足攝像機紅外燈開啟的條件。上海安防監(jiān)控開關(guān)電源采購</p><p style="text-indent:25px">濾波效率大為提高,濾波電容的容量和體積大為減小。上海安防監(jiān)控開關(guān)電源采購</p><p style="text-indent:25px">近兩年來，雖然銷售的企業(yè)數(shù)量在飛速增加，但是行業(yè)內(nèi)的增長規(guī)模仍然大幅高于銷售數(shù)量的增長規(guī)模，以及等基礎(chǔ)配套設(shè)施的相對滯后導(dǎo)致發(fā)展緩慢的缺口仍在不斷擴大。就單從我國UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源的產(chǎn)品品質(zhì)方面來看，相關(guān)設(shè)備制造行業(yè)門檻較低，生產(chǎn)的設(shè)備品質(zhì)參差不齊，存在劣幣驅(qū)逐良幣的現(xiàn)象。目前國內(nèi) UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源的設(shè)施運營商大部分都采購、運營由其自身或者其關(guān)聯(lián)企業(yè)生產(chǎn)、制造的產(chǎn)品，并不完全是由市場行為決定的。隨著家庭，辦公室，汽車，酒店的UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源的數(shù)量的增加和普及，使用者無需再顧慮電池，并且使用者數(shù)量也將持續(xù)不斷地增長。反過來，這也延長了電池的使用壽命。此外，UPS/EPS電源，雙向逆變器，安防電源，激光儲能電源也同時帶來其他好處。因此，出于效益、技術(shù)、資源、勞動力成本等諸多方面的考慮，世界不少發(fā)達地區(qū)的電氣設(shè)備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲能電源產(chǎn)品、工業(yè)電源、電池充放電電源設(shè)備、電池充放電管理系統(tǒng)設(shè)備、數(shù)字電源、無功補償器或者功率矯正器、數(shù)字控制技術(shù)軟件、工業(yè)控制軟件、電力計量產(chǎn)品、新能源設(shè)備、太陽能、并網(wǎng)逆變器、離網(wǎng)逆變器、匯流箱、控制器，通訊設(shè)備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負載的研發(fā)、銷售及相關(guān)信息咨詢。正在向中國轉(zhuǎn)移，不斷以獨資或合資的形式參與競爭，外國公司在國內(nèi)不同形式的企業(yè)，辦事處和電氣設(shè)備、電源產(chǎn)品、逆變器，UPS，通訊電源，儲能電源產(chǎn)品、工業(yè)電源、電池充放電電源設(shè)備、電池充放電管理系統(tǒng)設(shè)備、數(shù)字電源、無功補償器或者功率矯正器、數(shù)字控制技術(shù)軟件、工業(yè)控制軟件、電力計量產(chǎn)品、新能源設(shè)備、太陽能、并網(wǎng)逆變器、離網(wǎng)逆變器、匯流箱、控制器，通訊設(shè)備產(chǎn)品、節(jié)能電子產(chǎn)品、回饋式電源負載的研發(fā)、銷售及相關(guān)信息咨詢。的機構(gòu)也越來越多，使得國內(nèi)市場競爭更趨激烈。上海安防監(jiān)控開關(guān)電源采購</p></p><br /><p>文章來源地址: 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