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)行(xing)徹(che)底檢(jian)(jian)查，然(ran)后(hou)(hou)必須(xu)制(zhi)定配電柜(ju)的(de)改造計劃。首先，人員應(ying)關閉電源(yuan)以(yi)采(cai)取保護措施(shi)，對配電柜(ju)設施(shi)進(jin)行(xing)徹(che)底檢(jian)(jian)查，并更換老化的(de)電線，開關和燈(deng)。有問題(ti)的(de)設備應(ying)及(ji)時維修，并記錄檢(jian)(jian)查條(tiao)件。檢(jian)(jian)查后(hou)(hou)，人員應(ying)組織檢(jian)(jian)查工(gong)具，以(yi)免因配電柜(ju)遺失工(gong)具而(er)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(zai)(zai)進出電(dian)(dian)纜及其母線之間(jian)裝(zhuang)有保險(xian)絲和其他設備。如果輸出電(dian)(dian)纜被(bei)(bei)雷擊，并(bing)且輸入電(dian)(dian)纜保險(xian)絲先被(bei)(bei)燒(shao)斷，則整個配電(dian)(dian)箱(xiang)將失去(qu)防雷保護。配電(dian)(dian)箱(xiang)被(bei)(bei)雷擊損壞。建議在(zai)(zai)配電(dian)(dian)箱(xiang)的入口和出口側安裝(zhuang)氧化鋅(xin)避雷針(zhen)。

家(jia)用(yong)空氣開(kai)(kai)關(guan)(guan)(guan)分(fen)為單(dan)(dan)極(ji)和(he)兩(liang)(liang)極(ji)（單(dan)(dan)開(kai)(kai)，雙(shuang)開(kai)(kai)），單(dan)(dan)極(ji)在(zai)配(pei)電(dian)(dian)箱中占(zhan)一個回路，雙(shuang)極(ji)在(zai)配(pei)電(dian)(dian)箱中占(zhan)兩(liang)(liang)個回路。通常，主開(kai)(kai)關(guan)(guan)(guan)（即主開(kai)(kai)關(guan)(guan)(guan)）使(shi)用(yong)兩(liang)(liang)極(ji)。該(gai)開(kai)(kai)關(guan)(guan)(guan)可同(tong)時(shi)(shi)控制火線(xian)(xian)(xian)和(he)零線(xian)(xian)(xian)。其(qi)余饋(kui)線(xian)(xian)(xian)斷路器始(shi)終使(shi)用(yong)單(dan)(dan)極(ji)。交(jiao)換(huan)機(ji)必須連接(jie)到(dao)帶電(dian)(dian)電(dian)(dian)纜。開(kai)(kai)關(guan)(guan)(guan)的(de)兩(liang)(liang)極(ji)均為火線(xian)(xian)(xian)，零線(xian)(xian)(xian)連接(jie)至端(duan)子。劃船，不要(yao)敞開(kai)(kai)。常熟交(jiao)換(huan)機(ji)維修(xiu)仔(zi)細檢(jian)查交(jiao)換(huan)機(ji)和(he)電(dian)(dian)源后，打開(kai)(kai)電(dian)(dian)源進行(xing)維修(xiu)。由于(yu)此(ci)時(shi)(shi)處于(yu)緊張狀(zhuang)態，因(yin)此(ci)必須確保安全。檢(jian)查時(shi)(shi)，請仔(zi)細測(ce)量(liang)開(kai)(kai)關(guan)(guan)(guan)的(de)特(te)定模(mo)塊功(gong)率(lv)，記錄(lu)并(bing)(bing)調(diao)試開(kai)(kai)關(guan)(guan)(guan)的(de)脈沖寬度，并(bing)(bing)嘗試使(shi)復雜開(kai)(kai)關(guan)(guan)(guan)的(de)每個模(mo)塊的(de)功(gong)能(neng)正常運行(xing)。如果在(zai)現場檢(jian)查和(he)維護過程中發(fa)現異(yi)(yi)常，應關(guan)(guan)(guan)閉電(dian)(dian)源，并(bing)(bing)更(geng)換(huan)異(yi)(yi)常模(mo)塊。