指除安裝面外，其它所有側面都被封閉起來的一種低壓開關柜。這種柜子的開關、保護和監測控制等電氣元件，貴州美式箱變均安裝在一個用鋼或絕緣材料制成的封閉外殼內，可靠墻或離墻安裝。美式箱變價格柜內每條回(hui)路(lu)之間可(ke)(ke)以不(bu)加隔離措施，也可(ke)(ke)以采用(yong)接地(di)的金(jin)屬板或(huo)絕緣板進行(xing)隔離。通常門與(yu)主(zhu)(zhu)開(kai)關操作有(you)機械聯鎖。另(ling)外還有(you)防護(hu)式(shi)臺型開(kai)關柜（即控制臺）】面板上裝(zhuang)有(you)控制、測量、信號(hao)等電器。防護(hu)式(shi)開(kai)關柜主(zhu)(zhu)要用(yong)作工藝現(xian)場的配電裝(zhuang)置。

對(dui)于(yu)新員工(gong)，這(zhe)是(shi)一(yi)個學習的好(hao)機會。在師(shi)傅們組裝配電箱的同時(shi)，新員工(gong)也(ye)在旁邊仔(zi)細觀摩并給師(shi)傅打下手。對(dui)于(yu)新員工(gong)提出(chu)的相關(guan)問題，師(shi)傅們即(ji)使再忙也(ye)耐心的邊干(gan)活邊回答，這(zhe)是(shi)一(yi)種技能的傳授，把手藝傳承到(dao)新一(yi)代的年輕力量上(shang)。

采用移動(dong)(dong)(dong)運(yun)營(ying)商的(de)(de)(de)移動(dong)(dong)(dong)數(shu)(shu)(shu)據業務(wu)需要將(jiang)電(dian)動(dong)(dong)(dong)汽車(che)充(chong)電(dian)樁(zhuang)這(zhe)一電(dian)網內部(bu)設備接(jie)入(ru)(ru)移動(dong)(dong)(dong)運(yun)營(ying)商的(de)(de)(de)移動(dong)(dong)(dong)數(shu)(shu)(shu)據網絡，需要支(zhi)付昂(ang)貴的(de)(de)(de)月(yue)租和年費，隨著充(chong)電(dian)樁(zhuang)數(shu)(shu)(shu)量(liang)的(de)(de)(de)增加費用將(jiang)越(yue)來越(yue)大；同時(shi)數(shu)(shu)(shu)據的(de)(de)(de)安全性(xing)和網絡的(de)(de)(de)可靠性(xing)都受到移動(dong)(dong)(dong)運(yun)營(ying)商的(de)(de)(de)限制(zhi)，不利于(yu)設備的(de)(de)(de)安全運(yun)行；其(qi)次(ci)，移動(dong)(dong)(dong)運(yun)營(ying)商的(de)(de)(de)移動(dong)(dong)(dong)接(jie)入(ru)(ru)帶(dai)寬屬共(gong)享(xiang)帶(dai)寬，當局部(bu)區域(yu)有大量(liang)設備接(jie)入(ru)(ru)時(shi)，其(qi)接(jie)入(ru)(ru)的(de)(de)(de)可靠性(xing)和每(mei)個用戶的(de)(de)(de)平均帶(dai)寬會惡化，不利于(yu)充(chong)電(dian)樁(zhuang)群的(de)(de)(de)密集接(jie)入(ru)(ru)、大數(shu)(shu)(shu)據量(liang)的(de)(de)(de)數(shu)(shu)(shu)據傳輸。

車載充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)裝(zhuang)(zhuang)置指安裝(zhuang)(zhuang)在電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)汽車上的(de)(de)采用(yong)地(di)面交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)網和車載電(dian)(dian)(dian)(dian)(dian)(dian)源對電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)組(zu)進行充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)裝(zhuang)(zhuang)置，包括車載充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)、車載充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)發電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)組(zu)和運行能量回收充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)裝(zhuang)(zhuang)置，將一(yi)根帶插頭的(de)(de)交(jiao)流(liu)(liu)動(dong)(dong)力電(dian)(dian)(dian)(dian)(dian)(dian)纜線直接(jie)插到電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)汽車的(de)(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)插座中(zhong)給(gei)蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)。車載充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)裝(zhuang)(zhuang)置通常使用(yong)結(jie)構簡單、控(kong)制方便(bian)的(de)(de)接(jie)觸式充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)，也可以是感應充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)。它完全按照車載蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)種類進行設計，針對性較強。

在非金屬材料中(zhong)，纖維增強(qiang)聚酯材料有著(zhu)優秀的(de)(de)抗老(lao)化(hua)(hua)性能(neng)(neng)(neng)。經過抗老(lao)化(hua)(hua)性能(neng)(neng)(neng)測(ce)試表明，使用地點不同(tong)，所處氣(qi)候帶不同(tong)，其表面(mian)最大老(lao)化(hua)(hua)厚(hou)(hou)(hou)度(du)為(wei)20年小(xiao)于(yu)50μm。大多數箱(xiang)體(ti)(ti)的(de)(de)最小(xiao)厚(hou)(hou)(hou)度(du)為(wei)5mm，小(xiao)于(yu)箱(xiang)體(ti)(ti)厚(hou)(hou)(hou)度(du)的(de)(de)1%，因此對箱(xiang)體(ti)(ti)的(de)(de)機械性能(neng)(neng)(neng)沒有明顯的(de)(de)影響。令外該公司(si)采取了一(yi)種特殊的(de)(de)耐(nai)紫(zi)外線(xian)表面(mian)處理工藝(yi)，更加強(qiang)化(hua)(hua)了其耐(nai)老(lao)化(hua)(hua)性能(neng)(neng)(neng)。

這類開(kai)(kai)關(guan)(guan)(guan)柜(ju)采(cai)用(yong)鋼板(ban)(ban)制成(cheng)封閉外殼，進出線回路的(de)(de)電(dian)器元件都安裝在可抽(chou)出的(de)(de)抽(chou)屜(ti)中，構成(cheng)能(neng)完成(cheng)某一類供電(dian)任務的(de)(de)功(gong)能(neng)單(dan)(dan)(dan)元。功(gong)能(neng)單(dan)(dan)(dan)元與母(mu)線或電(dian)纜(lan)之(zhi)間(jian)，用(yong)接地的(de)(de)金屬板(ban)(ban)或塑(su)料(liao)制成(cheng)的(de)(de)功(gong)能(neng)板(ban)(ban)隔開(kai)(kai)，形成(cheng)母(mu)線、功(gong)能(neng)單(dan)(dan)(dan)元和(he)電(dian)纜(lan)三個(ge)區域。每個(ge)功(gong)能(neng)單(dan)(dan)(dan)元之(zhi)間(jian)也有隔離措(cuo)施(shi)。抽(chou)屜(ti)式開(kai)(kai)關(guan)(guan)(guan)柜(ju)有較高(gao)的(de)(de)可靠性(xing)、安全性(xing)和(he)互換性(xing)，是比(bi)較先進的(de)(de)開(kai)(kai)關(guan)(guan)(guan)柜(ju)，開(kai)(kai)關(guan)(guan)(guan)柜(ju)多數是指抽(chou)屜(ti)式開(kai)(kai)關(guan)(guan)(guan)柜(ju)。它們(men)適用(yong)于(yu)要求供電(dian)可靠性(xing)較高(gao)的(de)(de)工礦企業、高(gao)層建筑，作為集(ji)中控制的(de)(de)配電(dian)中心(xin)。