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)行徹底檢(jian)查，然后必須制定配電(dian)(dian)柜(ju)的(de)改造計劃。首先(xian)，人(ren)員應(ying)關閉(bi)電(dian)(dian)源(yuan)以采(cai)取保護(hu)措施，對(dui)配電(dian)(dian)柜(ju)設施進(jin)行徹底檢(jian)查，并更換老化的(de)電(dian)(dian)線，開關和燈(deng)。有問題的(de)設備應(ying)及時維修，并記錄檢(jian)查條件。檢(jian)查后，人(ren)員應(ying)組(zu)織(zhi)檢(jian)查工具，以免因(yin)配電(dian)(dian)柜(ju)遺失工具而(er)造成事故(gu)。

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)進出電纜及其(qi)母線之間(jian)裝有(you)保險絲和其(qi)他設備。如果輸出電纜被(bei)雷擊，并(bing)且輸入電纜保險絲先被(bei)燒斷，則(ze)整個配(pei)電箱將失去防雷保護。配(pei)電箱被(bei)雷擊損(sun)壞。建議在(zai)配(pei)電箱的入口和出口側安裝氧化(hua)鋅避雷針。

家用空氣開(kai)(kai)關(guan)(guan)分(fen)為(wei)單(dan)極(ji)(ji)和兩極(ji)(ji)（單(dan)開(kai)(kai)，雙開(kai)(kai)），單(dan)極(ji)(ji)在(zai)配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱中(zhong)占(zhan)一個(ge)(ge)回路，雙極(ji)(ji)在(zai)配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱中(zhong)占(zhan)兩個(ge)(ge)回路。通(tong)常，主開(kai)(kai)關(guan)(guan)（即主開(kai)(kai)關(guan)(guan)）使(shi)(shi)用兩極(ji)(ji)。該開(kai)(kai)關(guan)(guan)可同(tong)時控制火線(xian)(xian)和零線(xian)(xian)。其余饋線(xian)(xian)斷路器始終使(shi)(shi)用單(dan)極(ji)(ji)。交(jiao)換(huan)(huan)(huan)機(ji)必須(xu)連接到帶電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)纜(lan)。開(kai)(kai)關(guan)(guan)的(de)兩極(ji)(ji)均為(wei)火線(xian)(xian)，零線(xian)(xian)連接至端子(zi)。劃船，不要敞開(kai)(kai)。常熟交(jiao)換(huan)(huan)(huan)機(ji)維(wei)修仔細(xi)檢(jian)查(cha)交(jiao)換(huan)(huan)(huan)機(ji)和電(dian)(dian)(dian)(dian)(dian)源后，打開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)源進(jin)行維(wei)修。由于此時處于緊張狀(zhuang)態，因(yin)此必須(xu)確保(bao)安(an)全(quan)。檢(jian)查(cha)時，請仔細(xi)測(ce)量開(kai)(kai)關(guan)(guan)的(de)特定模塊(kuai)功率，記錄并調試(shi)開(kai)(kai)關(guan)(guan)的(de)脈沖寬度，并嘗試(shi)使(shi)(shi)復雜開(kai)(kai)關(guan)(guan)的(de)每個(ge)(ge)模塊(kuai)的(de)功能正(zheng)常運(yun)行。如果在(zai)現場檢(jian)查(cha)和維(wei)護過程(cheng)中(zhong)發現異(yi)(yi)常，應(ying)關(guan)(guan)閉電(dian)(dian)(dian)(dian)(dian)源，并更換(huan)(huan)(huan)異(yi)(yi)常模塊(kuai)。