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id="m7gykmy" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>孝感弧光保護仿真,弧光保護</p><p><span>***更新：</span>2020-07-28 14:19:34</p><p><span id="click" >瀏覽次數(shù)：6次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="xrj3uld" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇基頓電氣自動化有限公司</a></p><p><span>聯(lián)系人：</span>高經(jīng)理</p><p><span>郵箱: </span>215741001@qq.com</p><p><span>電話: </span>13328157222</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0510-85027009</p><p><span>地址: </span>長安鎮(zhèn)友誼路28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="etvf8mo" class="page-proshow02"><p class="title">詳細說明</p><div id="eikh8ur" class="box"><p><p> 接地故障電弧起火：由于“接地故障發(fā)生的幾率遠大于帶電導體間的短路”，所以“接地故障電弧引起的火災遠多于帶電導體間的電弧火災”。這是因為“在電氣線路施工中，穿鋼管拉電線時帶電導體絕緣外皮之間并無因相對運動而產(chǎn)生的摩擦，但帶電導體絕緣外皮與鋼管間的摩擦卻使絕緣摩薄或受損。另外，發(fā)生雷擊時地面上出現(xiàn)瞬變電磁場，它對電氣線路將感應瞬態(tài)過電壓”，此時“芯線上感應的瞬態(tài)過電壓是基本相同的，孝感弧光保護仿真，而電纜梯架則因接地而為地電壓”，所以，芯線對地的電位差較大。從摩損和電位差大兩方面分析，接地故障電弧起火率自然偏高。 </p> <p> 爬電起火：爬電是指電弧不是建立在空氣間隙中的電弧，而是出現(xiàn)在設備絕緣表面上的電弧。例如電源插頭的絕緣表面上的一個或多個相線插腳和PE線插腳，孝感弧光保護仿真，它們之間的絕緣表面可能發(fā)生爬電，孝感弧光保護仿真。弧光保護裝置設計**，歡迎來電咨詢。孝感弧光保護仿真</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="孝感弧光保護仿真,弧光保護" src="https://tyunfile.71360.com/UploadFile/keaton/637255090209277344/1236657.jpg"></div><p style="text-indent:25px">弧光保護系統(tǒng)利用弧光和電流雙重判據(jù),快速可靠地切除中、低壓開關柜母線上及配電設備發(fā)生的弧光短路故障,彌補現(xiàn)有開關柜母線保護的空白。它可以減少開關及上游變壓器設備的損害,縮小***障范圍;避免或減輕工作人員在發(fā)生電弧短路故障時所造成的傷害;保護中、低壓開關設備免受嚴重損壞,防止火災的發(fā)生;保護昂貴的主變壓器或廠用變壓器免受短路電流沖擊而損壞;比較大限度地減少用戶的停電時間。在***時間內(nèi)切除母線和開關柜內(nèi)部故障,盡可能地縮短電氣設備的恢復供電時間;延長現(xiàn)有開關設備的使用壽命,推遲更換開關設備的投資。確保電氣設備的安全,以及全廠的安全、可靠運行。河北弧光保護代理專業(yè)設計弧光保護裝置，弧光保護探頭，歡迎來電咨詢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="孝感弧光保護仿真,弧光保護" src="https://tyunfile.71360.com/UploadFile/keaton/637255090210332031/5312785.jpg"></div><p> 工作原理 </p> <p> 電弧光保護以電流單元為基礎分組，弧光探頭可以整定關聯(lián)到任意一組電流信號上。當弧光單元把光信號從弧光傳感器傳輸?shù)交」獗Ｗo設備時，并且同時電流啟動元件動作和電弧光保護動作，裝置可選擇弧光信號動作單判據(jù)作為動作邏輯判斷。 </p> <p> 當檢測到本身硬件故障時，發(fā)出告警信號，同時閉鎖整套保護。硬件故障包括：采樣回路故障、RAM出錯、定值出錯等。 </p> <p> <br /> </p> <p> 端子圖及定義 </p> <p> 主要的端子數(shù)量有：6個弧光信號檢測接口，用于接收來自弧光傳感器的弧光故障信號。4個數(shù)據(jù)通訊接口，2路RS485，1路CAN總線，1路以太網(wǎng)。4路快速跳閘輸出接口，符合IEC255-23繼電器標準。2路報警出口，其中一路為裝置故障出口。12路電流輸入，檢測4組三相電流信號，用于判斷故障電流。 </p> <p> </p><p> 開關柜電弧耐受時間與電弧光保護動作時間 </p> <p> IEC298《交流金屬封閉開關設備與控制設備》附錄AA中規(guī)定的內(nèi)部燃弧測試時間是0.1秒。目前市場上銷售的開關柜基本上是按照IEC298標準生產(chǎn)的，也就是說開關柜可以承受的電弧燃燒時間為0.1秒。弧光保護生產(chǎn)廠家，歡迎來電咨詢。</p> 弧光保護動作時間主要由兩部分組成：裝置動作時間和開關動作時間?；」獗Ｗo裝置的動作時間根據(jù)各廠商的動作原理不同（光電探頭或光纖探頭等）一般在1~10毫秒，開關動作時間（參考GE公司VB1—13.8真空斷路器）一般在50~60毫秒。故電弧光保護動作時間小于開關柜電弧耐受時間，不會對開關柜造成嚴重損傷。<div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="孝感弧光保護仿真,弧光保護" src="https://tyunfile.71360.com/UploadFile/keaton/637255090210332031/5373647.jpg"></div><p> 廠用/配電中壓開關柜為全廠輔機/供電系統(tǒng)的供電樞紐。在發(fā)生內(nèi)部故障時，是否能迅速地切除故障，對全廠/配電系統(tǒng)的安全運行至關重要。但是，按目前的保護方案，存在以下幾個問題： </p> <p> ① 中壓母線尚沒有配置任何專門的保護; 而是由進線開關的相關后備保護來兼顧的; </p> <p> ② 進線開關與出線開關的保護需要相互配合:一般速斷保護延時的級差至少為300ms，甚至500ms ; </p> <p> ③ 過流保護的配合級差更是長達1 – 2秒。 </p> <p> 所以，廠用/配電系統(tǒng)中壓母線上所發(fā)生的任何故障都至少要延時切除。換句話說，現(xiàn)有的廠用中壓母線能在**早時間切除故障的保護還是個空白。可是，我們只要稍加注意，就會不難發(fā)現(xiàn)不論是中壓開關母線的上游還是下游的諸多電氣設備無一沒有配有快速保護。相比之下，我們恐怕很難有充分的理由來說明，中壓母線的安全性可靠性應該受到這樣的懈怠。鑒于中壓母線的重要地位，任何故障的延時切除，都是我們極為不愿意看到的狀況。因為開關柜內(nèi)的各種故障，其短路電流所產(chǎn)生的電弧及其大量的高溫，使柜內(nèi)氣體急劇膨脹，可在極短的時間內(nèi)達到頂峰，嚴重危及人身和設備安全。 </p> <p> <br /> 電弧光保護裝置廠家直銷。德陽弧光保護分類</p><p style="text-indent:25px">高性能弧光保護裝置，廠家直銷。孝感弧光保護仿真</p><p> 系統(tǒng)優(yōu)點 </p> <p> (1)動作迅速可靠 </p> <p> 跳閘回路采用了快速繼電器技術，確保保護系統(tǒng)在1ms內(nèi)發(fā)出跳閘信號，加上斷路器動作時間(35-60ms)，使開關柜內(nèi)部電弧光故障總切除時間控制在60ms以內(nèi)，而且在外觀上無明顯損壞。繼電保護裝置包括測量、計算、自檢、動作等時間累計約44ms, 加上斷路器動作時間，差動保護和無時限電流速斷保護動作，故障切除時間約100ms。即使電流速斷保護比弧光保護多40ms,查看弧光危害示意圖，電纜已經(jīng)燃燒。如果是帶時限電流速斷保護延時100ms、過電流Ⅰ段延時300ms,已經(jīng)達到柜體燃燒甚至的可能。孝感弧光保護仿真</p><p style="text-indent:25px">江蘇基頓電氣自動化有限公司始建于2019-08-05，坐落于長安鎮(zhèn)友誼路28號，現(xiàn)有員工101~300人余人。專業(yè)的團隊大多數(shù)員工都有多年工作經(jīng)驗，熟悉行業(yè)專業(yè)知識技能，致力于發(fā)展基頓電氣的品牌。公司不**提供專業(yè)的自動化設備、電氣機械及器材、儀器儀表、電子產(chǎn)品的研發(fā)生、銷售；計算機硬件、電氣設備的技術研發(fā)、設計。電力儀表事業(yè)部主要產(chǎn)品包括：電力儀表系列、智能電動機保護器系列、開關柜智能操控裝置系列、智慧用電監(jiān)控模塊系列、電量變送器系列，及系統(tǒng)集成系列產(chǎn)品。產(chǎn)品普遍用于冶金、石化、電力、建筑、市政等行業(yè)。,同時還建立了完善的售后服務體系,為客戶提供質(zhì)量的產(chǎn)品和服務。自公司成立以來，一直秉承“以質(zhì)量求生存，以信譽求發(fā)展”的經(jīng)營理念，始終堅持以客戶的需求和滿意為**，為客戶提供質(zhì)量的[ "數(shù)顯電力儀表", "操控裝置", "弧光保護", "微機綜合保護" ]，從而使公司不斷發(fā)展壯大。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/730041.html</p></div></div></div></div></div><div id="nhjgypb" class="page-right twoColRt"><div id="oy83nk2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vkctv2o" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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