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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7u32epe" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>濮陽(yáng)弧光保護(hù)**</p><p><span>***更新：</span>2020-06-23 04:27:24</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="bvs3ifu" 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(dòng)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(huà): </span>13328157222</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0510-85027009</p><p><span>地址: </span>長(zhǎng)安鎮(zhèn)友誼路28號(hào)</p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="oif4og3" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3ftseqa" class="box"><p><p> 系統(tǒng)優(yōu)點(diǎn) </p> <p> (1)動(dòng)作迅速可靠 </p> <p> 跳閘回路采用了快速繼電器技術(shù)，確保保護(hù)系統(tǒng)在1ms內(nèi)發(fā)出跳閘信號(hào)，加上斷路器動(dòng)作時(shí)間(35-60ms)，使開(kāi)關(guān)柜內(nèi)部電弧光故障總切除時(shí)間控制在60ms以?xún)?nèi)，而且在外觀(guān)上無(wú)明顯損壞。繼電保護(hù)裝置包括測(cè)量、計(jì)算、自檢、動(dòng)作等時(shí)間累計(jì)約44ms, 加上斷路器動(dòng)作時(shí)間，差動(dòng)保護(hù)和無(wú)時(shí)限電流速斷保護(hù)動(dòng)作，故障切除時(shí)間約100ms。即使電流速斷保護(hù)比弧光保護(hù)多40ms,查看弧光危害示意圖，濮陽(yáng)弧光保護(hù)**，電纜已經(jīng)燃燒，濮陽(yáng)弧光保護(hù)**。如果是帶時(shí)限電流速斷保護(hù)延時(shí)100ms，濮陽(yáng)弧光保護(hù)**、過(guò)電流Ⅰ段延時(shí)300ms,已經(jīng)達(dá)到柜體燃燒甚至的可能。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濮陽(yáng)弧光保護(hù)**" src="https://tyunfile.71360.com/UploadFile/keaton/637255090208691406/971244.jpg"></div><p style="text-indent:25px">弧光保護(hù)在我國(guó)電力網(wǎng)領(lǐng)域運(yùn)行現(xiàn)狀及未來(lái)系統(tǒng)遠(yuǎn)景，我們降下文章以下介紹中逐一說(shuō)明：繼電保護(hù)領(lǐng)域繼微機(jī)保護(hù)技術(shù)飛躍發(fā)展以來(lái),紫外光弧光保護(hù)技術(shù)可堪稱(chēng)**突出的技術(shù)進(jìn)步。采用光纖電弧光保護(hù)系統(tǒng),從光纖弧光傳感器檢測(cè)到故障電弧光,到出口報(bào)警跳閘時(shí)間小于4ms,遠(yuǎn)遠(yuǎn)快于傳統(tǒng)的繼電保護(hù)裝置。一、電弧光產(chǎn)生原理：通常情況下氣體呈絕緣狀態(tài),一旦發(fā)生電弧放電現(xiàn)象,氣體就會(huì)變成導(dǎo)電體。當(dāng)氣體原子受到外界大能量的作用,使電子有可能脫離其原子核的束縛而成為自由電子時(shí),氣體呈帶電的狀態(tài),我們把這一過(guò)程叫做氣體的電離。形成電弧時(shí)的電壓和電流根據(jù)電源阻抗、導(dǎo)電體的間距以及環(huán)境中物質(zhì)成分的不同而有巨大的差異。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濮陽(yáng)弧光保護(hù)**" src="https://tyunfile.71360.com/UploadFile/keaton/637255090208730469/6645876.jpg"></div><p> 電弧光的監(jiān)測(cè)及防護(hù) </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> 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> 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> 設(shè)備安裝限流斷路器 </p> <p> 主動(dòng)保護(hù)有以下兩種常見(jiàn)的、可行的方法：1）通過(guò)壓力傳感器進(jìn)行監(jiān)測(cè);2）通過(guò)弧光傳感器進(jìn)行監(jiān)測(cè) </p> <p> 第一種方法（采用壓力傳感器作為電弧光探測(cè)單元）壓力波是裝置內(nèi)出現(xiàn)電弧***的效應(yīng)之一，它將在電弧出現(xiàn)后的10-15毫秒后出現(xiàn)，可以安裝一些壓力傳感器用于探測(cè)壓力峰值。當(dāng)內(nèi)部的壓力達(dá)到設(shè)定值時(shí)，電弧監(jiān)測(cè)裝置發(fā)出動(dòng)作指令，控制開(kāi)關(guān)器件動(dòng)作。但是要預(yù)先確定電弧在柜內(nèi)產(chǎn)生的過(guò)壓值并非易事。 </p> <p> 第二種方法（采用光纖傳感器作為電弧光探測(cè)單元）弧光監(jiān)測(cè)器的操作邏輯如下：電弧現(xiàn)象會(huì)產(chǎn)生強(qiáng)烈的光輻射，因此柜體內(nèi)出現(xiàn)的弧光可以被弧光傳感器探測(cè)到。當(dāng)弧光監(jiān)控系統(tǒng)探測(cè)到故障，會(huì)發(fā)出動(dòng)作信號(hào)給斷路器。這種方法的探測(cè)反應(yīng)時(shí)間*為1毫秒。 </p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/357928.html</p></div></div></div></div></div><div id="m3gdfht" class="page-right twoColRt"><div id="rbixj34" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="r7ryahj" class="recomPic likePro"><a 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