的改裝必須由專業人員進行。在繼續之前，必須對原始配電柜進(jin)(jin)行徹底檢(jian)查(cha)，然后必須制(zhi)定配(pei)電(dian)(dian)(dian)(dian)柜(ju)的改造計劃。首先，人(ren)員(yuan)應(ying)關(guan)(guan)閉(bi)電(dian)(dian)(dian)(dian)源(yuan)以采取(qu)保護(hu)措(cuo)施(shi)，對配(pei)電(dian)(dian)(dian)(dian)柜(ju)設施(shi)進(jin)(jin)行徹底檢(jian)查(cha)，并更(geng)換老化的電(dian)(dian)(dian)(dian)線，開關(guan)(guan)和燈(deng)。有問題的設備應(ying)及時維(wei)修，并記錄(lu)檢(jian)查(cha)條件。檢(jian)查(cha)后，人(ren)員(yuan)應(ying)組織檢(jian)查(cha)工(gong)具，以免因配(pei)電(dian)(dian)(dian)(dian)柜(ju)遺失工(gong)具而造成事故。

高壓配電柜僅將避雷針安裝在進線的一側。雷電防護不能覆蓋所有設備。普通照明在進出(chu)電(dian)纜及其母線之間裝(zhuang)有保(bao)險絲和(he)其他設備(bei)。如果輸出(chu)電(dian)纜被雷擊(ji)，并且輸入電(dian)纜保(bao)險絲先被燒(shao)斷(duan)，則整個(ge)配(pei)電(dian)箱(xiang)將失(shi)去防雷保(bao)護。配(pei)電(dian)箱(xiang)被雷擊(ji)損壞。建議在配(pei)電(dian)箱(xiang)的(de)入口(kou)和(he)出(chu)口(kou)側安裝(zhuang)氧化(hua)鋅避(bi)雷針(zhen)。

家用空氣開(kai)(kai)關(guan)(guan)(guan)(guan)分為(wei)單(dan)極(ji)和兩(liang)極(ji)（單(dan)開(kai)(kai)，雙(shuang)(shuang)開(kai)(kai)），單(dan)極(ji)在配電(dian)(dian)(dian)箱(xiang)中(zhong)占一個回路(lu)，雙(shuang)(shuang)極(ji)在配電(dian)(dian)(dian)箱(xiang)中(zhong)占兩(liang)個回路(lu)。通常(chang)，主開(kai)(kai)關(guan)(guan)(guan)(guan)（即主開(kai)(kai)關(guan)(guan)(guan)(guan)）使(shi)用兩(liang)極(ji)。該開(kai)(kai)關(guan)(guan)(guan)(guan)可(ke)同時控制火線(xian)和零線(xian)。其余饋線(xian)斷路(lu)器始終使(shi)用單(dan)極(ji)。交換機必須連接(jie)到帶電(dian)(dian)(dian)電(dian)(dian)(dian)纜。開(kai)(kai)關(guan)(guan)(guan)(guan)的兩(liang)極(ji)均為(wei)火線(xian)，零線(xian)連接(jie)至端子。劃船，不(bu)要敞開(kai)(kai)。常(chang)熟交換機維修仔細(xi)檢查交換機和電(dian)(dian)(dian)源后，打開(kai)(kai)電(dian)(dian)(dian)源進行維修。由于此(ci)時處于緊(jin)張狀態(tai)，因(yin)此(ci)必須確(que)保安(an)全(quan)。檢查時，請仔細(xi)測(ce)量開(kai)(kai)關(guan)(guan)(guan)(guan)的特定模(mo)塊功(gong)率，記(ji)錄并調試(shi)開(kai)(kai)關(guan)(guan)(guan)(guan)的脈沖寬度，并嘗試(shi)使(shi)復雜開(kai)(kai)關(guan)(guan)(guan)(guan)的每個模(mo)塊的功(gong)能正常(chang)運行。如果在現(xian)場(chang)檢查和維護過程中(zhong)發現(xian)異(yi)常(chang)，應關(guan)(guan)(guan)(guan)閉電(dian)(dian)(dian)源，并更換異(yi)常(chang)模(mo)塊。