對于配(pei)電(dian)(dian)變壓器(qi)容量(liang)在(zai)100kV·A及以(yi)上(shang)的配(pei)電(dian)(dian)箱體，在(zai)箱內散(san)熱窗靠側(ce)壁處，應考慮到安裝溫控繼(ji)電(dian)(dian)器(qi)（JU-3型或JU-4超小型溫度繼(ji)電(dian)(dian)器(qi)）和軸流(liu)風(feng)機，安裝在(zai)控制電(dian)(dian)器(qi)板上(shang)方左側(ce)面的箱體上(shang)，以(yi)便(bian)使箱內溫度達到一定值(zhi)時（如40℃）能自動啟(qi)動排氣扇，強(qiang)行排出(chu)熱量(liang)以(yi)使箱體散(san)熱。

這(zhe)類開(kai)(kai)關(guan)柜采(cai)用鋼板(ban)(ban)(ban)制(zhi)成封閉外殼，進出線(xian)回路的(de)電(dian)器元(yuan)(yuan)件都(dou)安(an)裝在可(ke)抽(chou)出的(de)抽(chou)屜中，構成能(neng)完成某一類供電(dian)任務的(de)功(gong)能(neng)單元(yuan)(yuan)。功(gong)能(neng)單元(yuan)(yuan)與母線(xian)或(huo)電(dian)纜(lan)之間，用接(jie)地的(de)金屬板(ban)(ban)(ban)或(huo)塑料制(zhi)成的(de)功(gong)能(neng)板(ban)(ban)(ban)隔開(kai)(kai)，形成母線(xian)、功(gong)能(neng)單元(yuan)(yuan)和電(dian)纜(lan)三個區域。每(mei)個功(gong)能(neng)單元(yuan)(yuan)之間也有(you)隔離措施。抽(chou)屜式(shi)開(kai)(kai)關(guan)柜有(you)較高的(de)可(ke)靠(kao)(kao)性(xing)、安(an)全性(xing)和互換性(xing)，是比(bi)較先進的(de)開(kai)(kai)關(guan)柜，開(kai)(kai)關(guan)柜多數是指抽(chou)屜式(shi)開(kai)(kai)關(guan)柜。它們(men)適用于(yu)要求供電(dian)可(ke)靠(kao)(kao)性(xing)較高的(de)工礦企業、高層(ceng)建筑，作為集中控制(zhi)的(de)配(pei)電(dian)中心。

配電(dian)(dian)(dian)變(bian)壓器(qi)的(de)低壓側總(zong)過流(liu)(liu)(liu)(liu)保(bao)護(hu)熔(rong)(rong)(rong)斷(duan)器(qi)的(de)額(e)定電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，應(ying)大(da)于配電(dian)(dian)(dian)變(bian)壓器(qi)的(de)低壓側額(e)定電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，一般取額(e)定電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)1.5倍(bei)，熔(rong)(rong)(rong)體的(de)額(e)定電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)應(ying)按(an)變(bian)壓器(qi)允許(xu)的(de)過負荷倍(bei)數和熔(rong)(rong)(rong)斷(duan)器(qi)特性確(que)定。出(chu)線(xian)回路過流(liu)(liu)(liu)(liu)保(bao)護(hu)熔(rong)(rong)(rong)斷(duan)器(qi)的(de)熔(rong)(rong)(rong)體額(e)定電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，不應(ying)大(da)于總(zong)過流(liu)(liu)(liu)(liu)保(bao)護(hu)熔(rong)(rong)(rong)斷(duan)器(qi)的(de)額(e)定電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，熔(rong)(rong)(rong)體的(de)額(e)定電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)按(an)回路正(zheng)常最(zui)大(da)負荷電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)選(xuan)擇，并應(ying)躲過正(zheng)常的(de)尖峰(feng)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)。

配(pei)電(dian)(dian)箱(xiang)具(ju)有(you)體積小(xiao)、安裝(zhuang)簡(jian)便，技術(shu)性能(neng)特殊、位置固定，配(pei)置功能(neng)獨特、不受場地(di)限制(zhi)(zhi)，應(ying)(ying)用(yong)比較普(pu)遍，操作穩定可靠(kao)，空間利用(yong)率高(gao)，占地(di)少且具(ju)有(you)環保(bao)效應(ying)(ying)的(de)(de)特點(dian)。是指揮供(gong)電(dian)(dian)線(xian)路中各種元器件合理分配(pei)電(dian)(dian)能(neng)的(de)(de)控(kong)制(zhi)(zhi)中心，是可靠(kao)接納上端電(dian)(dian)源，正(zheng)確饋出荷(he)載電(dian)(dian)能(neng)的(de)(de)控(kong)制(zhi)(zhi)環節，也(ye)是獲取用(yong)戶對供(gong)電(dian)(dian)質量滿意與否(fou)的(de)(de)關鍵(jian)。提高(gao)動(dong)力配(pei)電(dian)(dian)箱(xiang)的(de)(de)操作可靠(kao)性，是創優質工程的(de)(de)目標。

必須選用符合GB 6829《剩余電流動作保護器的一般要求》標準、并經中國電工產品認證委員會認證合格的產品。生產便攜式充電樁可選用類似LJM（J）系列節電型、且是低靈敏度的延時型保護器。便攜式充電樁價格保(bao)護器裝置的(de)方式要符(fu)合國家(jia)GB13955-2005《剩余電(dian)流(liu)動(dong)作(zuo)保(bao)護裝置的(de)安裝和(he)運行》標(biao)準。漏電(dian)保(bao)護器的(de)分斷時間(jian)，當(dang)漏電(dian)電(dian)流(liu)為(wei)額定(ding)漏電(dian)電(dian)流(liu)時，其動(dong)作(zuo)時間(jian)不應(ying)大于0.s。