改進原配電(dian)(dian)(dian)(dian)箱(xiang)的低(di)壓(ya)電(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)組的接(jie)(jie)線(xian)方式，將其安裝位置由交(jiao)流接(jie)(jie)觸器(qi)上樁頭，改成接(jie)(jie)在(zai)配電(dian)(dian)(dian)(dian)箱(xiang)低(di)壓(ya)進線(xian)與計量表計之間。防(fang)止因運行中電(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)電(dian)(dian)(dian)(dian)路發生缺相故(gu)障或電(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)損壞時，造(zao)成計量裝置計量不(bu)準(zhun)確(que)。此外，電(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)選(xuan)擇型號應(ying)為BSMJ系列(lie)產品，以保證元件質量可靠、安全運行。

按照安(an)裝地點，可分(fen)為(wei)(wei)公(gong)(gong)共(gong)充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)和專用充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)。 公(gong)(gong)共(gong)充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)是建(jian)設(she)在公(gong)(gong)共(gong)停(ting)(ting)車場（庫(ku)）結合停(ting)(ting)車泊位，為(wei)(wei)社會(hui)車輛(liang)提供公(gong)(gong)共(gong)充(chong)電(dian)(dian)(dian)服務的(de)(de)(de)(de)充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)。 專用充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)是建(jian)設(she)單(dan)位（企業）自(zi)有停(ting)(ting)車場（庫(ku)），為(wei)(wei)單(dan)位（企業）內(nei)部人員使用的(de)(de)(de)(de)充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)。 自(zi)用充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)是建(jian)設(she)在個人自(zi)有車位（庫(ku)），為(wei)(wei)私人用戶(hu)提供充(chong)電(dian)(dian)(dian)的(de)(de)(de)(de)充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)。 充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)一般結合停(ting)(ting)車場（庫(ku)）的(de)(de)(de)(de)停(ting)(ting)車位建(jian)設(she)。安(an)裝在戶(hu)外的(de)(de)(de)(de)充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)防護(hu)等(deng)級不(bu)應低(di)于IP54。安(an)裝在戶(hu)內(nei)的(de)(de)(de)(de)充(chong)電(dian)(dian)(dian)樁(zhuang)(zhuang)防護(hu)等(deng)級不(bu)應低(di)于IP32。

在農網改造中當時由于需求的配電箱數量大、施工期短，配電箱廠需要有關低壓電器的供貨時間急且數量多，JP柜哪家好因而產生了對產品質量的要求不嚴格的現象，訂做JP柜造(zao)成(cheng)了一(yi)些產品投(tou)入(ru)運(yun)行(xing)后不久(jiu)就發生故障。如有些型號(hao)交流(liu)接觸(chu)器在配(pei)電(dian)箱投(tou)運(yun)后不久(jiu)，就因接觸(chu)器合閘線圈燒壞，而無法運(yun)行(xing)。

暗裝(zhuang)配(pei)電(dian)箱(xiang)(xiang)，配(pei)電(dian)箱(xiang)(xiang)嵌(qian)入墻內安裝(zhuang)，在砌墻時預留孔洞(dong)應比配(pei)電(dian)箱(xiang)(xiang)的長(chang)和寬各大20mm左右，預留的深(shen)度為配(pei)電(dian)箱(xiang)(xiang)厚度加上洞(dong)內壁抹灰的厚度。在圬(wu)埋配(pei)電(dian)箱(xiang)(xiang)時，箱(xiang)(xiang)體與(yu)墻之(zhi)間填以(yi)混凝土即可把箱(xiang)(xiang)體固定住(zhu)。

配電(dian)(dian)(dian)箱(xiang)的(de)(de)(de)進出(chu)線選用低壓(ya)電(dian)(dian)(dian)纜(lan)(lan)，電(dian)(dian)(dian)纜(lan)(lan)的(de)(de)(de)選擇應(ying)符(fu)合(he)技術要(yao)求。例如30kVA、50kVA變壓(ya)器(qi)的(de)(de)(de)配電(dian)(dian)(dian)箱(xiang)的(de)(de)(de)進線使用VV22-35×4電(dian)(dian)(dian)纜(lan)(lan)，分(fen)路(lu)出(chu)線使用同規格的(de)(de)(de)VLV22-35×4電(dian)(dian)(dian)纜(lan)(lan)；80kVA、100kVA變壓(ya)器(qi)的(de)(de)(de)配電(dian)(dian)(dian)箱(xiang)的(de)(de)(de)進線分(fen)別(bie)使用VV22-50×4、VV22-70×4電(dian)(dian)(dian)纜(lan)(lan)，分(fen)路(lu)出(chu)線分(fen)別(bie)使用VLV22-50×4、VLV22-70×4電(dian)(dian)(dian)纜(lan)(lan),其(qi)電(dian)(dian)(dian)纜(lan)(lan)與銅鋁接(jie)線鼻壓(ya)接(jie)后再(zai)用螺栓(shuan)與配電(dian)(dian)(dian)箱(xiang)內接(jie)線樁(zhuang)頭連接(jie)。

用軟刷或(huo)吹風(feng)清除屏板插件(jian)和全部電(dian)磁開關(guan)零(ling)件(jian)的(de)積塵,并檢(jian)查控制柜內電(dian)器開關(guan)觸頭的(de)狀態(tai),接觸情況,線圈(quan)外(wai)表的(de)絕(jue)緣(yuan)以及機械部件(jian)的(de)動作(zuo)是否(fou)可靠,更換熔絲時,應使熔斷電(dian)流與該回路(lu)的(de)電(dian)流相(xiang)匹配(pei)。