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行徹底(di)檢查，然后必須制定配(pei)電(dian)柜的(de)改造計劃(hua)。首(shou)先，人員應關閉電(dian)源以采取(qu)保護措施(shi)，對配(pei)電(dian)柜設施(shi)進行徹底(di)檢查，并更換老(lao)化的(de)電(dian)線，開(kai)關和燈(deng)。有問題(ti)的(de)設備應及時(shi)維(wei)修，并記錄檢查條(tiao)件。檢查后，人員應組織檢查工(gong)具(ju)(ju)，以免因配(pei)電(dian)柜遺失工(gong)具(ju)(ju)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。普通照明在進出電(dian)(dian)(dian)纜及其母線之間(jian)裝有保(bao)險(xian)(xian)絲和其他設(she)備(bei)。如果輸出電(dian)(dian)(dian)纜被雷(lei)(lei)(lei)擊(ji)，并且(qie)輸入電(dian)(dian)(dian)纜保(bao)險(xian)(xian)絲先(xian)被燒斷，則整個配電(dian)(dian)(dian)箱(xiang)(xiang)將失去防雷(lei)(lei)(lei)保(bao)護。配電(dian)(dian)(dian)箱(xiang)(xiang)被雷(lei)(lei)(lei)擊(ji)損壞。建(jian)議在配電(dian)(dian)(dian)箱(xiang)(xiang)的入口和出口側(ce)安裝氧化鋅(xin)避(bi)雷(lei)(lei)(lei)針。

家用(yong)(yong)空(kong)氣(qi)開(kai)關(guan)分為單(dan)(dan)極(ji)(ji)(ji)和兩極(ji)(ji)(ji)（單(dan)(dan)開(kai)，雙(shuang)開(kai)），單(dan)(dan)極(ji)(ji)(ji)在(zai)(zai)(zai)配電(dian)(dian)(dian)箱(xiang)中(zhong)占一(yi)個回路(lu)，雙(shuang)極(ji)(ji)(ji)在(zai)(zai)(zai)配電(dian)(dian)(dian)箱(xiang)中(zhong)占兩個回路(lu)。通常，主開(kai)關(guan)（即主開(kai)關(guan)）使(shi)(shi)(shi)用(yong)(yong)兩極(ji)(ji)(ji)。該開(kai)關(guan)可同時(shi)(shi)控制火線(xian)(xian)和零(ling)線(xian)(xian)。其余饋線(xian)(xian)斷路(lu)器始(shi)終使(shi)(shi)(shi)用(yong)(yong)單(dan)(dan)極(ji)(ji)(ji)。交換機必須(xu)連(lian)接(jie)到帶電(dian)(dian)(dian)電(dian)(dian)(dian)纜。開(kai)關(guan)的兩極(ji)(ji)(ji)均為火線(xian)(xian)，零(ling)線(xian)(xian)連(lian)接(jie)至端子。劃船，不要敞開(kai)。常熟(shu)交換機維修仔細檢查(cha)交換機和電(dian)(dian)(dian)源后，打開(kai)電(dian)(dian)(dian)源進行維修。由于此時(shi)(shi)處于緊張狀(zhuang)態，因此必須(xu)確保安全。檢查(cha)時(shi)(shi)，請仔細測(ce)量開(kai)關(guan)的特定(ding)模塊(kuai)功率(lv)，記錄(lu)并(bing)調試開(kai)關(guan)的脈(mo)沖(chong)寬度，并(bing)嘗試使(shi)(shi)(shi)復雜開(kai)關(guan)的每個模塊(kuai)的功能正常運(yun)行。如果在(zai)(zai)(zai)現場檢查(cha)和維護過(guo)程中(zhong)發現異常，應關(guan)閉電(dian)(dian)(dian)源，并(bing)更換異常模塊(kuai)。