當高低壓開關柜中的真空斷路器轎廂在試驗位置閉合時，斷路器不能進入工作位置。是一種電氣設備，主要控制開關在外線柜內，然后是分控制開關，每個支路都是根據其需要而設置的，如儀表、自動控制、電機磁開關、各種交流接觸器等，還有一些。具有高壓室和低壓室開關柜、高壓母線等電廠，部分還具有低循環負荷保護的主要設備。   

高(gao)低壓開關(guan)柜(ju)交流低壓配(pei)電柜(ju)是根(gen)據能(neng)源部門、電力(li)用(yong)戶和設計部門的(de)(de)要求，根(gen)據安全、經濟、合(he)理、牢靠的(de)(de)原則設計的(de)(de)一種(zhong)新(xin)型低壓配(pei)電柜(ju)。產品具(ju)有(you)較(jiao)高(gao)的(de)(de)破碎能(neng)力(li)、良好的(de)(de)動、熱穩(wen)定性、靈活的(de)(de)電氣方案、方便的(de)(de)組合(he)、系列、實(shi)用(yong)、實(shi)用(yong)，可作為低壓開關(guan)設備(bei)的(de)(de)替代產品。   

當高(gao)壓開關(guan)(guan)柜(ju)(ju)(ju)中的接(jie)地(di)刀(dao)關(guan)(guan)閉時，轎廂(xiang)斷(duan)(duan)路(lu)器(qi)(qi)不(bu)能閉合。當高(gao)壓開關(guan)(guan)柜(ju)(ju)(ju)中的真(zhen)空(kong)斷(duan)(duan)路(lu)器(qi)(qi)關(guan)(guan)閉時，機(ji)柜(ju)(ju)(ju)的后(hou)門被機(ji)械(xie)和機(ji)柜(ju)(ju)(ju)門鎖(suo)定在(zai)地(di)刀(dao)上。高(gao)壓開關(guan)(guan)柜(ju)(ju)(ju)中的真(zhen)空(kong)斷(duan)(duan)路(lu)器(qi)(qi)在(zai)工(gong)作(zuo)時，接(jie)頭切割機(ji)不(bu)能放入(ru)高(gao)壓開關(guan)(guan)柜(ju)(ju)(ju)中，真(zhen)空(kong)斷(duan)(duan)路(lu)器(qi)(qi)在(zai)工(gong)作(zuo)開啟(qi)時不(bu)能退出汽車斷(duan)(duan)路(lu)器(qi)(qi)的工(gong)作(zuo)位置。

寧夏(xia)高壓(ya)柜為(wei)何要使用(yong)直流(liu)屏?

從(cong)高壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源通(tong)過變(bian)電(dian)(dian)(dian)(dian)(dian)站或變(bian)壓(ya)(ya)(ya)器變(bian)為低壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源供(gong)(gong)日常使用的，高壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源由于危(wei)險性(xing)高，因此平時都是(shi)電(dian)(dian)(dian)(dian)(dian)動操作進行，但(dan)是(shi)變(bian)電(dian)(dian)(dian)(dian)(dian)所未送電(dian)(dian)(dian)(dian)(dian)前如(ru)果沒有低壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源，引一路低壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源進變(bian)電(dian)(dian)(dian)(dian)(dian)站的話操作復雜，而從(cong)高壓(ya)(ya)(ya)進線處(chu)變(bian)一個獨立(li)的低壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源隱患較(jiao)大，因此就不(bu)得(de)不(bu)采取一種(zhong)方法給高壓(ya)(ya)(ya)配電(dian)(dian)(dian)(dian)(dian)設備提供(gong)(gong)操作電(dian)(dian)(dian)(dian)(dian)源，于是(shi)直流屏應運而生。

根(gen)據直流(liu)屏所配套的高壓柜臺(tai)數功率大(da)小不同，直流(liu)屏所配蓄電(dian)池的容量(liang)也不一樣，日常(chang)(chang)生活(huo)中常(chang)(chang)見的直流(liu)屏常(chang)(chang)用規格可分(fen)為24AH、40AH、65AH、100AH等(deng)，對于(yu)變電(dian)站或者開(kai)閉(bi)所等(deng)高壓柜用直流(liu)屏，可能(neng)規格需要200AH甚至更(geng)高，具體要看高壓柜的數量(liang)和負載(zai)的大(da)小。