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(che)底(di)檢(jian)查(cha)，然(ran)后必(bi)須制定配電柜(ju)的改造計劃。首先，人員應關(guan)閉(bi)電源以(yi)采取保護(hu)措施，對配電柜(ju)設施進(jin)行徹(che)底(di)檢(jian)查(cha)，并更換老化的電線(xian)，開關(guan)和燈(deng)。有問題的設備應及時維(wei)修，并記錄檢(jian)查(cha)條件(jian)。檢(jian)查(cha)后，人員應組織(zhi)檢(jian)查(cha)工(gong)具(ju)，以(yi)免因(yin)配電柜(ju)遺失工(gong)具(ju)而造成(cheng)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(jin)出電(dian)(dian)(dian)纜及其母線之間裝(zhuang)有保(bao)(bao)險(xian)絲和其他設(she)備。如果輸出電(dian)(dian)(dian)纜被雷(lei)擊(ji)，并且(qie)輸入(ru)電(dian)(dian)(dian)纜保(bao)(bao)險(xian)絲先被燒斷，則整個配電(dian)(dian)(dian)箱將失去防雷(lei)保(bao)(bao)護。配電(dian)(dian)(dian)箱被雷(lei)擊(ji)損壞。建議在(zai)(zai)配電(dian)(dian)(dian)箱的入(ru)口(kou)和出口(kou)側安裝(zhuang)氧化鋅(xin)避雷(lei)針。

家用(yong)空(kong)氣開(kai)關(guan)(guan)分為(wei)單(dan)極(ji)(ji)(ji)和兩(liang)極(ji)(ji)(ji)（單(dan)開(kai)，雙開(kai)），單(dan)極(ji)(ji)(ji)在(zai)配(pei)(pei)電(dian)(dian)(dian)(dian)箱(xiang)中(zhong)(zhong)占(zhan)(zhan)一個(ge)回(hui)路，雙極(ji)(ji)(ji)在(zai)配(pei)(pei)電(dian)(dian)(dian)(dian)箱(xiang)中(zhong)(zhong)占(zhan)(zhan)兩(liang)個(ge)回(hui)路。通常，主開(kai)關(guan)(guan)（即主開(kai)關(guan)(guan)）使(shi)(shi)用(yong)兩(liang)極(ji)(ji)(ji)。該開(kai)關(guan)(guan)可同時控制火線(xian)(xian)和零線(xian)(xian)。其余(yu)饋線(xian)(xian)斷路器始終使(shi)(shi)用(yong)單(dan)極(ji)(ji)(ji)。交換(huan)機(ji)必須(xu)(xu)連接到帶電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)纜。開(kai)關(guan)(guan)的(de)兩(liang)極(ji)(ji)(ji)均為(wei)火線(xian)(xian)，零線(xian)(xian)連接至端子(zi)。劃船，不要敞(chang)開(kai)。常熟交換(huan)機(ji)維(wei)修(xiu)仔細檢(jian)查(cha)交換(huan)機(ji)和電(dian)(dian)(dian)(dian)源后，打開(kai)電(dian)(dian)(dian)(dian)源進行維(wei)修(xiu)。由于(yu)此時處(chu)于(yu)緊(jin)張狀態，因此必須(xu)(xu)確(que)保安全(quan)。檢(jian)查(cha)時，請仔細測量開(kai)關(guan)(guan)的(de)特(te)定(ding)模塊功率，記錄并(bing)(bing)調試開(kai)關(guan)(guan)的(de)脈沖寬度，并(bing)(bing)嘗(chang)試使(shi)(shi)復雜開(kai)關(guan)(guan)的(de)每(mei)個(ge)模塊的(de)功能正常運行。如(ru)果在(zai)現場檢(jian)查(cha)和維(wei)護過程(cheng)中(zhong)(zhong)發(fa)現異常，應關(guan)(guan)閉電(dian)(dian)(dian)(dian)源，并(bing)(bing)更換(huan)異常模塊。