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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ue3zry2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/keaton/637255090210332031/5312785.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ed2e3iw" 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(guān)鍵詞：</span>安徽弧光保護代理</p><p><span>***更新：</span>2020-06-21 12:25:00</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="b8pbiax" 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="7lsuwyk" class="page-proshow02"><p class="title">詳細說明</p><div id="xmj72oa" class="box"><p><p> 什么是弧光放電？ </p> <p> 當兩電極間電壓升高時，在電極**近處空氣中的正負離子被電場加速，在移動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，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> 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，電弧將會消失。 </p> <p> <p> 電弧光是怎樣形成的？ </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，安徽弧光保護代理，則維持此10mm 長的電弧只需20V 的電壓。也就是說只要先接觸，安徽弧光保護代理，安徽弧光保護代理，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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽弧光保護代理" src="https://tyunfile.71360.com/UploadFile/keaton/637255090210332031/5312785.jpg"></div><p> 概述 </p> <p> 在110KV變電站的中低壓母線一般不配置母線保護，近年來為了有效控制變電站中低壓母線開關(guān)設(shè)備損壞及母線和斷路器故障引起主變壓器損壞的發(fā)生，越來越多的變電站中低壓開關(guān)柜配置電弧光保護。通過弧光保護裝置可以快速地切除故障點，保證系統(tǒng)的安全穩(wěn)定運行。 </p> <p> 應(yīng)用范圍 </p> <p> 適用于電力開關(guān)柜中，引入電弧光保護裝置，可以捕捉到電氣弧光，并快速地切除故障點，保證電力系統(tǒng)的安全穩(wěn)定運行。 </p> <p> 主要特點 </p> <p> 1、動作迅速可靠 </p> <p> 采用了可靠的快速算法，可以在短時間內(nèi)判斷弧光變化信號和電流變化信號并迅速出口，從發(fā)現(xiàn)故障到出口跳閘時間間隔優(yōu)于10ms，確保開關(guān)柜內(nèi)設(shè)備的弧光在75ms以內(nèi)切除。 </p> <p> 2、全數(shù)字化設(shè)計 </p> <p> 本裝置采用全數(shù)字化設(shè)計，配置靈活，動作精度高，而且排除了由于旋鈕或其他機械設(shè)計導(dǎo)致的誤差***。 </p> <p> 3、保護原理簡單、合理 </p> <p> 根據(jù)弧光產(chǎn)生時的特點，裝置采用弧光和電流雙重判據(jù)，判據(jù)簡單且可以有效的保證動作的準確性。 </p> <p> 4、強大的電氣性能 </p> <p> 弧光探頭設(shè)計、連接線等全部采用耐高溫、阻燃的高分子材料，具有強大的電氣隔離效果。裝置完全 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽弧光保護代理" src="https://tyunfile.71360.com/UploadFile/keaton/637255090208583984/7334798.jpg"></div><p> 電弧光在中、低壓開關(guān)柜內(nèi)產(chǎn)生的主要因素是什么？ </p> <p> 使用了不良性能的導(dǎo)電體 </p> <p> 絕緣材料的損壞（包括：裂痕，進水，老化等） </p> <p> 人體或其他物品意外地接觸到帶電的物品 </p> <p> 操作過程中的失誤或者設(shè)計或安裝錯誤 </p> <p> 元件損壞，沒有良好的維修和保養(yǎng)設(shè)備 </p> <p> 過電壓 </p> <p> 電網(wǎng)結(jié)構(gòu)的改變（系統(tǒng)容量增大、電纜應(yīng)用增多） </p> <p> 電弧光的危害 </p> <p> 開關(guān)設(shè)備內(nèi)部間隔發(fā)生故障而產(chǎn)生的電弧光會造成開關(guān)設(shè)備中的壓力和溫度迅速增加，如不及時切除、將可能造成以下重大危害： </p> <p> 電弧光中心溫度（相當于太陽表面溫度的2~4倍，約為10000~20000°C）過高導(dǎo)致銅排、鋁排熔毀氣化； </p> <p> 電纜熔毀，電纜護套著火； </p> <p> 開關(guān)設(shè)備劇烈振動，使固定元件松脫； </p> <p> 使上一級變壓器承受近距離短路沖擊，故障電流產(chǎn)生的電動力可能導(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的速度爆發(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，將造成無法彌補的重大損失； </p> <p> 燃燒產(chǎn)生的0氣體被人吸入會產(chǎn)生生命危險； </p> <p> 高溫灼傷皮膚，強光刺傷眼睛 </p> <p> 爆破音振損傷耳膜，肺臟； </p> <p> 碎片飛射，造成人員傷亡。 </p> <p> <br /> </p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/337853.html</p></div></div></div></div></div><div id="lvxheq2" class="page-right twoColRt"><div id="vz3n4qn" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pjqn8p2" 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