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class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="c883282" class="box"><p><p> 開(kāi)關(guān)柜電弧耐受時(shí)間與電弧光保護(hù)動(dòng)作時(shí)間 </p> <p> IEC298《交流金屬封閉開(kāi)關(guān)設(shè)備與控制設(shè)備》附錄AA中規(guī)定的內(nèi)部燃弧測(cè)試時(shí)間是0.1秒。目前市場(chǎng)上銷(xiāo)售的開(kāi)關(guān)柜基本上是按照IEC298標(biāo)準(zhǔn)生產(chǎn)的，也就是說(shuō)開(kāi)關(guān)柜可以承受的電弧燃燒時(shí)間為0.1秒。紫外光弧光保護(hù)，國(guó)產(chǎn)弧光保護(hù)**，廠(chǎng)家直銷(xiāo)。國(guó)產(chǎn)弧光保護(hù)**</p> 弧光保護(hù)動(dòng)作時(shí)間主要由兩部分組成：裝置動(dòng)作時(shí)間和開(kāi)關(guān)動(dòng)作時(shí)間。弧光保護(hù)裝置的動(dòng)作時(shí)間根據(jù)各廠(chǎng)商的動(dòng)作原理不同（光電探頭或光纖探頭等）一般在1~10毫秒，開(kāi)關(guān)動(dòng)作時(shí)間（參考GE公司VB1—13，國(guó)產(chǎn)弧光保護(hù)**.8真空斷路器）一般在50~60毫秒，國(guó)產(chǎn)弧光保護(hù)**。故電弧光保護(hù)動(dòng)作時(shí)間小于開(kāi)關(guān)柜電弧耐受時(shí)間，不會(huì)對(duì)開(kāi)關(guān)柜造成嚴(yán)重?fù)p傷。<div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國(guó)產(chǎn)弧光保護(hù)**,弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090208730469/6645876.jpg"></div><p> 1.1 電弧光產(chǎn)生的原因 </p> <p> 引起開(kāi)關(guān)柜弧光短路故障的原因很多，主要有：絕緣故障、載流回路不良、外來(lái)物體的進(jìn)入、人為操作錯(cuò)誤、系統(tǒng)改變或故障等。 </p> <p> 1.2 電弧光的能量 </p> <p> 開(kāi)關(guān)柜發(fā)生內(nèi)部弧光故障產(chǎn)生的短路功率可高達(dá)8~60 MW，所產(chǎn)生的能量與電弧的燃燒時(shí)間、短路電流的平方值、柜體幾何尺寸以及所使用的材料等因素有關(guān)，其中**主要的因素是短路故障電流及電弧燃燒的時(shí)間，電弧能量與有關(guān)電弧燃燒的時(shí)間的關(guān)系如圖所示。從圖中可以看出，電弧燃燒持續(xù)時(shí)間超過(guò)100 ms ，所釋放的能量開(kāi)始急劇增加，接著各種故障效應(yīng)對(duì)開(kāi)關(guān)設(shè)備的電纜、銅排以及鋼材造成嚴(yán)重?fù)p壞. </p> <p> <br /> 秦皇島弧光保護(hù)系統(tǒng)專(zhuān)業(yè)生產(chǎn)電弧光保護(hù)裝置，歡迎來(lái)電咨詢(xún)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國(guó)產(chǎn)弧光保護(hù)**,弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090210332031/5312785.jpg"></div><p> 電弧光的危害 </p> <p> <br /> </p> <p> 開(kāi)關(guān)設(shè)備內(nèi)部間隔發(fā)生故障而產(chǎn)生的電弧光會(huì)造成開(kāi)關(guān)設(shè)備中的壓力和溫度迅速增加，如不及時(shí)切除、將可能造成以下重大危害： </p> <p> <br /> </p> <p> 電弧光中心溫度（相當(dāng)于太陽(yáng)表面溫度的2~4倍，約為10000~20000°C過(guò)高導(dǎo)致銅排、鋁排熔毀氣化； </p> <p> <br /> </p> <p> 電纜熔毀，電纜護(hù)套著火； </p> <p> <br /> </p> <p> 開(kāi)關(guān)設(shè)備劇烈振動(dòng)，使固定元件松脫； </p> <p> <br /> </p> <p> 使上一級(jí)變壓器承受近距離短路沖擊，故障電流產(chǎn)生的電動(dòng)力可能導(dǎo)致變壓器繞組變形引起匝間短路； </p> <p> <br /> </p> <p> 故障產(chǎn)生的弧光沖擊波以300m/s速度爆發(fā)，可摧毀途中的任何物質(zhì)，若波及站內(nèi)直流系統(tǒng)導(dǎo)致全站直流失電，將造成無(wú)法彌補(bǔ)的重大損失； </p> <p> <br /> </p> <p> 燃燒產(chǎn)生的有害氣體被人吸入會(huì)產(chǎn)生生命危險(xiǎn)； </p> <p> <br /> </p> <p> 高溫灼傷皮膚，強(qiáng)光刺傷眼睛 </p> <p> <br /> </p> <p> 爆破音振損傷耳膜，肺臟； </p> <p> <br /> </p> <p> 碎片飛射，造成人員傷亡。 </p> <p> <br /> </p> <p> 電弧光的監(jiān)測(cè)及防護(hù) </p> <p> <br /> </p> <p> 當(dāng)?shù)蛪洪_(kāi)關(guān)柜發(fā)生電弧，可以通過(guò)三種不同的設(shè)計(jì)理念保護(hù)操作人員和設(shè)備的安全： </p> <p> <br /> </p> <p> 改善設(shè)備的機(jī)械結(jié)構(gòu)，使之能夠承受電?。ū粍?dòng)保護(hù)） </p> <p> <br /> </p> <p> 設(shè)備安裝限制內(nèi)部電弧效應(yīng)的裝置（主動(dòng)保護(hù)） </p> <p> <br /> </p><p> 電弧光保護(hù)系統(tǒng)使用先進(jìn)的處理器技術(shù)來(lái)控制系統(tǒng)的功能。該處理器技術(shù)也使得電弧光保護(hù)系統(tǒng)功能的編程，可匹配開(kāi)關(guān)柜的不同運(yùn)行方式。在跳閘回路里采用的半導(dǎo)體技術(shù)（可控硅開(kāi)關(guān)）確保了開(kāi)關(guān)柜里的供電開(kāi)關(guān)以**小的延時(shí)得到跳閘信號(hào)。在不論是KEATON電弧光保護(hù)系統(tǒng)的主控單元，還是電弧光單元探測(cè)到電弧光，并且電流單元的整定的電流定值被超過(guò)，電弧光保護(hù)系統(tǒng)的跳閘信號(hào)將在極短時(shí)間內(nèi)到達(dá)供電開(kāi)關(guān)。 </p> <p> 電流的信息也可直接取自安全電流回路，在此情況下，電弧光保護(hù)也可盡可能快的得到過(guò)流的信息。如果偶爾光線(xiàn)信號(hào)超過(guò)光線(xiàn)設(shè)定值或者電流信號(hào)超過(guò)電流設(shè)定值，系統(tǒng)不會(huì)輸出跳閘信號(hào)，也不會(huì)記憶在跳閘回路中，但是在主控單元上會(huì)顯示報(bào)警信號(hào)。在編程的時(shí)候，需要考慮系統(tǒng)按照用戶(hù)所希望的方式正常工作。采用光纖技術(shù)來(lái)向主控單元傳輸跳閘信號(hào)，確保了電弧光保護(hù)系統(tǒng)的完美功能，它的抗干擾能力強(qiáng)，跳閘信號(hào)可以非常迅速的輸出到斷路器。弧光保護(hù)傳感器廠(chǎng)家，性能穩(wěn)定，歡迎來(lái)電咨詢(xún)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國(guó)產(chǎn)弧光保護(hù)**,弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090210458984/175496.jpg"></div><p> 由全國(guó)量度繼電器和保護(hù)設(shè)備標(biāo)準(zhǔn)化技術(shù)**會(huì)（SAC/TC154）**、云南電網(wǎng)公司電力科學(xué)研究院牽頭、行業(yè)**企業(yè)、各網(wǎng)省公司及檢測(cè)機(jī)構(gòu)等業(yè)內(nèi)**參與起草的國(guó)家標(biāo)準(zhǔn)GB/T 14598.302-2016《弧光保護(hù)裝置技術(shù)要求》已于2016年9月1日正式實(shí)施。 </p> <p> 本標(biāo)準(zhǔn)規(guī)定了弧光保護(hù)裝置的技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、標(biāo)志、標(biāo)簽和包裝、運(yùn)輸、貯存等。 </p> <p> 標(biāo)準(zhǔn)適用于弧光保護(hù)裝置及其接口設(shè)備，作為弧光保護(hù)產(chǎn)品設(shè)計(jì)、制造、試驗(yàn)和應(yīng)用的依據(jù)。 </p> <p> GB/T 14598.302-2016《弧光保護(hù)裝置技術(shù)要求》國(guó)家標(biāo)準(zhǔn)的發(fā)布實(shí)施，完善了我國(guó)國(guó)家標(biāo)準(zhǔn)體系，為廣大弧光保護(hù)制造廠(chǎng)家、電力用戶(hù)及檢測(cè)機(jī)構(gòu)提供統(tǒng)一的標(biāo)準(zhǔn)依據(jù)，同時(shí)也更有助于提升弧光保護(hù)產(chǎn)品的質(zhì)量、規(guī)范弧光保護(hù)裝置的產(chǎn)品市場(chǎng)，提高企業(yè)的生產(chǎn)效率，形成產(chǎn)業(yè)優(yōu)勢(shì)，從而提高弧光保護(hù)裝置產(chǎn)品在國(guó)內(nèi)乃至國(guó)際市場(chǎng)方面的競(jìng)爭(zhēng)力。電弧光保護(hù)裝置源頭廠(chǎng)家。山東弧光保護(hù)維修</p><p style="text-indent:25px">電弧光保護(hù)裝置廠(chǎng)家直銷(xiāo)，歡迎來(lái)電咨詢(xún)。國(guó)產(chǎn)弧光保護(hù)**</p><p> 國(guó)產(chǎn)的弧光保護(hù)比進(jìn)口的更適用，國(guó)產(chǎn)的把主控單元、電流單元和copy弧光采集單元集成在一起，安裝方便，可靠性高，進(jìn)口的分幾個(gè)單元主要是為了自己的利益。其實(shí)UTU和RIZNER兩個(gè)產(chǎn)品實(shí)質(zhì)上是一樣的，面板不同而已。 </p> <p> 目前南京、保定的生產(chǎn)廠(chǎng)家都是采用一體式的裝置，只有早起仿ABB、VAMP、UTU的廠(chǎng)家按照進(jìn)口產(chǎn)品的結(jié)構(gòu)模式做的，各個(gè)單元之間通過(guò)電纜連接，人為增加了節(jié)點(diǎn)，反而降低了設(shè)備的可靠性。zhidao </p> <p> 弧光保護(hù)的技術(shù)發(fā)源地在芬蘭。ABB的REA系列，Vamp的321,221系列，在國(guó)內(nèi)都有比較多的應(yīng)用，還有Arcteq、UTU 也都有較成熟的弧光保護(hù)產(chǎn)品。 </p> <p> 電弧是放電過(guò)程中發(fā)生的一種現(xiàn)象，當(dāng)兩點(diǎn)之間的電壓超過(guò)其工頻絕緣強(qiáng)度極限時(shí)就會(huì)發(fā)生。當(dāng)適當(dāng)?shù)臈l件出現(xiàn)時(shí)，一個(gè)攜帶著電流的等離子產(chǎn)生，直到電源側(cè)的保護(hù)設(shè)備斷開(kāi)才會(huì)消失?？諝庠谕ǔl件是很好的絕緣體，但由于溫度的升高或者其他外部因素的作用，其化學(xué)和物理特性發(fā)生改變時(shí)，它可能變成通電的導(dǎo)體。國(guó)產(chǎn)弧光保護(hù)**</p><p style="text-indent:25px">江蘇基頓電氣自動(dòng)化有限公司創(chuàng)立于2019-08-05，總部位于江蘇省無(wú)錫市，是一家自動(dòng)化設(shè)備、電氣機(jī)械及器材、儀器儀表、電子產(chǎn)品的研發(fā)生、銷(xiāo)售；計(jì)算機(jī)硬件、電氣設(shè)備的技術(shù)研發(fā)、設(shè)計(jì)。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(dòng)機(jī)保護(hù)器系列、開(kāi)關(guān)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)。的公司。江蘇基頓電氣擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專(zhuān)業(yè)研發(fā)團(tuán)隊(duì)，以高度的專(zhuān)注和執(zhí)著為客戶(hù)提供[ "數(shù)顯電力儀表", "操控裝置", "弧光保護(hù)", "微機(jī)綜合保護(hù)" ]。依托效率源扎實(shí)的技術(shù)積累、完善的產(chǎn)品體系、深厚的行業(yè)基礎(chǔ)，目前擁有員工數(shù)101~300人，年?duì)I業(yè)額達(dá)到3000-5000萬(wàn)元。江蘇基頓電氣創(chuàng)始人黃東，始終關(guān)注客戶(hù)，以?xún)?yōu)化創(chuàng)新的科技，竭誠(chéng)為客戶(hù)提供比較好的服務(wù)。</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/668041.html</p></div></div></div></div></div><div id="rax3qz8" class="page-right twoColRt"><div id="mln7jls" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="m7phrta" 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