高壓隔離開關的工作機理發布時間:2022/5/18 14:35:02 瀏覽次數:3258
|
||
高壓隔(ge)離開(kai)關(guan)保證了高壓電(dian)(dian)(dian)器及裝置(zhi)在檢(jian)修工作(zuo)時的(de)安(an)(an)全(quan)(quan),起隔(ge)離電(dian)(dian)(dian)壓的(de)作(zuo)用(yong),不能(neng)(neng)用(yong)與(yu)切(qie)斷、投入負(fu)荷(he)電(dian)(dian)(dian)流和開(kai)斷短(duan)路電(dian)(dian)(dian)流,僅可用(yong)于不產生強大電(dian)(dian)(dian)弧(hu)的(de)某些切(qie)換(huan)操作(zuo),即是(shi)說(shuo)它不具有(you)滅弧(hu)功能(neng)(neng);按安(an)(an)裝地(di)點(dian)不同分(fen)為(wei)(wei),屋(wu)內式(shi)和屋(wu)外式(shi),按絕(jue)緣支柱數目分(fen)為(wei)(wei),單柱式(shi),雙(shuang)柱式(shi)和三柱式(shi),各電(dian)(dian)(dian)壓等級都有(you)可選設(she)備。還可將高壓配電(dian)(dian)(dian)裝置(zhi)中需要停電(dian)(dian)(dian)的(de)部(bu)分(fen)與(yu)帶電(dian)(dian)(dian)部(bu)分(fen)可靠地(di)隔(ge)離,以(yi)保證檢(jian)修工作(zuo)的(de)安(an)(an)全(quan)(quan)。高壓隔(ge)離開(kai)關(guan)的(de)觸頭全(quan)(quan)部(bu)敞露在空(kong)氣中,具有(you)明顯的(de)斷開(kai)點(dian),隔(ge)離開(kai)關(guan)沒有(you)滅弧(hu)裝置(zhi),因此不能(neng)(neng)用(yong)來(lai)切(qie)斷負(fu)荷(he)電(dian)(dian)(dian)流或短(duan)路電(dian)(dian)(dian)流,否則在高壓作(zuo)用(yong)下,斷開(kai)點(dian)將產生強烈(lie)電(dian)(dian)(dian)弧(hu),并(bing)很難自行熄滅,甚至可能(neng)(neng)造成飛弧(hu)(相(xiang)對地(di)或相(xiang)間短(duan)路),燒損設(she)備,危及人身安(an)(an)全(quan)(quan),這就是(shi)所(suo)謂“帶負(fu)荷(he)拉隔(ge)離開(kai)關(guan)”的(de)嚴重事故。 高壓隔(ge)離(li)開(kai)關還可以用來進行某些電路(lu)的切(qie)換(huan)操作,以改變系(xi)統的運行方(fang)式。例(li)如:在(zai)雙(shuang)母線(xian)電路(lu)中,可以用高壓隔(ge)離(li)開(kai)關將運行中的電路(lu)從一條(tiao)母線(xian)切(qie)換(huan)到另(ling)一條(tiao)母線(xian)上。 |
||
|
友情鏈接: 天龍電器
Copyright © 2022 樂清市(shi)天龍電器有限公司 版權所有 All Right Reserved.