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class="pic"><img src="https://tyunfile.71360.com/UploadFile/keaton/637255090209130859/8513785.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lsjlxw2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/keaton/637255090209130859/8513785.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="eik3a7x" 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>遼寧饋線弧光保護(hù)</p><p><span>***更新：</span>2020-06-22 14:28:18</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="oiurtvx" 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: </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>長安鎮(zhèn)友誼路28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="3wdfsea" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ncevh7e" class="box"><p><p> 電弧光保護(hù)系統(tǒng)具備傳統(tǒng)低壓保護(hù)裝置的許多功能，并能夠記錄故障事件和波形，從而為故障的分析提供重要的基礎(chǔ)數(shù)據(jù)。電弧光保護(hù)是一種快速可靠的**母線保護(hù)系統(tǒng)，采用檢測弧光和過流雙判據(jù)原理，具有原理簡單、動(dòng)作可靠迅速、對變電站一次設(shè)備無特殊要求、適應(yīng)于各種運(yùn)行方式、且在各種運(yùn)行方式下保護(hù)不需要切換等優(yōu)點(diǎn)，為目前發(fā)電廠、變電站、工業(yè)及商業(yè)配電系統(tǒng)母線保護(hù)理想的解決方案。 </p> <p> <br /> </p> <p> 什么是弧光放電？ </p> <p> <br /> </p> <p> 當(dāng)兩電極間電壓升高時(shí)，電極**近處空氣中的正負(fù)離子被電場加速，移動(dòng)的過程中與其它空氣分子碰撞產(chǎn)生新的離子，這種離子大量增加的現(xiàn)象稱為電離”空氣被電離的同時(shí)，溫度隨之急劇上升產(chǎn)生電弧，這種放電稱為弧光放電?；」夥烹娨话悴恍枰芨叩碾妷?，屬于低電壓大電流放電。 </p> <p> <br /> </p> <p> 弧光放電產(chǎn)生的條件是小間隙和大電流，如果增加間隙或減小電流，電弧將會(huì)消失。 </p> <p> <br /> </p> <p> 電弧光是怎樣形成的 </p> <p> <br /> </p> <p> 電弧性短路起火：如將兩電極接觸后再拉開建立了電弧，則維持此10mm長的電弧只需20V電壓，遼寧饋線弧光保護(hù)，遼寧饋線弧光保護(hù)，遼寧饋線弧光保護(hù)。也就是說只要先接觸，之后又分開，很可能產(chǎn)生局部溫度很高的電弧而成為起火源。按電弧發(fā)生的不同部分可分為帶電導(dǎo)體間的電弧、帶電導(dǎo)體與地之間的電弧和絕緣表面的爬電。 </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧饋線弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090209130859/8513785.jpg"></div><p> 電弧光保護(hù)裝置的主要作用 </p> <p> 1、減專少或降低電弧光對于人體的傷害。 </p> <p> 2、減少或降低電弧光短路故障對于設(shè)備的損害。 </p> <p> 3、避免變壓器因近距離母線故障造成動(dòng)穩(wěn)定破壞，延長變壓器的使用壽命。 </p> <p> 4、縮短電弧光故障切除時(shí)間，避免波及站內(nèi)直流系統(tǒng)造成重大損失。 </p> <p> 5、減少因電弧光故障造成設(shè)備停運(yùn)的時(shí)屬間，更快地恢復(fù)供電。 </p> <p> 主要應(yīng)用于以下場合 </p> <p> 1、電力變電站。 </p> <p> 2、火電廠電氣段開關(guān)柜母線室及饋線柜。 </p> <p> 3、風(fēng)電場升壓站集電線路開關(guān)柜。 </p> <p> 4、箱式變電站。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧饋線弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090208730469/6645876.jpg"></div><p> 目**80伏/1千伏/3千伏/6千伏/10千伏/35千伏開關(guān)柜中沒有**的母線主保護(hù),但在國外電力行業(yè)已經(jīng)普及95%以上;國內(nèi)采用變壓器過流保護(hù)用于母線后備保護(hù),理論上必須延時(shí)300~500毫秒,實(shí)際上動(dòng)作時(shí)間可能長達(dá)1.5~2秒,起不到對母線的真正保護(hù),并且使變壓器低壓側(cè)絕緣有較大的結(jié)構(gòu)性損壞,所以目前的母線后備保護(hù)是有缺點(diǎn)的 </p> <p> 從弧光保護(hù)設(shè)計(jì)的系統(tǒng)可靠性來看,變壓器、進(jìn)線、饋線都有主保護(hù),唯獨(dú)母線沒有**的主保護(hù),我們認(rèn)為母線應(yīng)該增加**主保護(hù)。雖然母線故障出現(xiàn)概率較低,但一旦出現(xiàn)將損失慘重。因此,從技術(shù)、設(shè)計(jì)方面建議配置母線**主保護(hù)弧光保護(hù),以確保操作人員的人身安全及系統(tǒng)的安全、穩(wěn)定運(yùn)行。 </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/351061.html</p></div></div></div></div></div><div id="kegnubs" class="page-right twoColRt"><div id="d8n9c7z" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pjvcja8" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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