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)底檢(jian)查，然后(hou)必須制(zhi)定(ding)配(pei)電(dian)柜(ju)(ju)的(de)改(gai)造計劃。首先，人員應(ying)關閉(bi)電(dian)源以(yi)(yi)采取保護措施(shi)，對配(pei)電(dian)柜(ju)(ju)設施(shi)進(jin)行徹(che)底檢(jian)查，并(bing)更換老化的(de)電(dian)線，開關和燈。有問題的(de)設備應(ying)及時維修，并(bing)記錄檢(jian)查條件。檢(jian)查后(hou)，人員應(ying)組織檢(jian)查工具，以(yi)(yi)免因配(pei)電(dian)柜(ju)(ju)遺(yi)失工具而(er)造成事(shi)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(qi)母線之間裝有保(bao)險絲和其(qi)他(ta)設備。如(ru)果輸(shu)出電(dian)(dian)(dian)纜被(bei)雷擊，并且(qie)輸(shu)入(ru)電(dian)(dian)(dian)纜保(bao)險絲先被(bei)燒斷，則整個配(pei)電(dian)(dian)(dian)箱將失去防雷保(bao)護(hu)。配(pei)電(dian)(dian)(dian)箱被(bei)雷擊損(sun)壞。建議在配(pei)電(dian)(dian)(dian)箱的(de)入(ru)口和出口側(ce)安裝氧(yang)化鋅(xin)避雷針(zhen)。

家用(yong)空氣開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)分為單(dan)(dan)極(ji)和兩極(ji)（單(dan)(dan)開(kai)，雙開(kai)），單(dan)(dan)極(ji)在配電(dian)(dian)箱中占一個(ge)回(hui)路(lu)，雙極(ji)在配電(dian)(dian)箱中占兩個(ge)回(hui)路(lu)。通常，主開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)（即主開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)）使(shi)用(yong)兩極(ji)。該開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)可同時控制(zhi)火(huo)線(xian)和零線(xian)。其余(yu)饋(kui)線(xian)斷路(lu)器(qi)始終使(shi)用(yong)單(dan)(dan)極(ji)。交(jiao)換(huan)(huan)機(ji)必須(xu)連(lian)接(jie)到帶電(dian)(dian)電(dian)(dian)纜。開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)的(de)兩極(ji)均為火(huo)線(xian)，零線(xian)連(lian)接(jie)至端子(zi)。劃船，不要敞開(kai)。常熟交(jiao)換(huan)(huan)機(ji)維(wei)(wei)修仔細檢(jian)(jian)查(cha)交(jiao)換(huan)(huan)機(ji)和電(dian)(dian)源(yuan)(yuan)后，打開(kai)電(dian)(dian)源(yuan)(yuan)進行(xing)維(wei)(wei)修。由于此時處(chu)于緊(jin)張狀(zhuang)態(tai)，因此必須(xu)確保安(an)全。檢(jian)(jian)查(cha)時，請仔細測量開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)的(de)特定(ding)模塊功率，記錄并調試開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)的(de)脈沖寬度，并嘗試使(shi)復(fu)雜(za)開(kai)關(guan)(guan)(guan)(guan)(guan)(guan)的(de)每個(ge)模塊的(de)功能(neng)正常運行(xing)。如果在現場檢(jian)(jian)查(cha)和維(wei)(wei)護過程中發現異常，應關(guan)(guan)(guan)(guan)(guan)(guan)閉電(dian)(dian)源(yuan)(yuan)，并更換(huan)(huan)異常模塊。