從安(an)(an)全(quan)(quan)技術方面考慮,通常將電(dian)(dian)氣設(she)備分(fen)為高(gao)壓(ya)和(he)低壓(ya)兩(liang)種:凡對地電(dian)(dian)壓(ya)在(zai)250伏以上(shang)者(zhe)為高(gao)壓(ya),對地電(dian)(dian)壓(ya)在(zai)250伏及以下(xia)(xia)者(zhe)為低壓(ya)。而42伏及以下(xia)(xia)的(de)電(dian)(dian)壓(ya)則(ze)稱為安(an)(an)全(quan)(quan)電(dian)(dian)壓(ya)。如(ru)無(wu)特殊安(an)(an)全(quan)(quan)裝置和(he)安(an)(an)全(quan)(quan)措施,在(zai)潮濕(shi)環(huan)境和(he)特別危險的(de)場合使用(yong)照明(ming)(ming)或攜帶(dai)式電(dian)(dian)動(dong)工具(ju)等,均(jun)應(ying)采(cai)用(yong)36伏以下(xia)(xia)的(de)安(an)(an)全(quan)(quan)電(dian)(dian)壓(ya)。凡在(zai)潮濕(shi)工作場所、金屬容器內(nei)、隧道內(nei)或礦井內(nei)的(de)手提電(dian)(dian)動(dong)用(yong)具(ju)或照明(ming)(ming)燈,均(jun)應(ying)采(cai)用(yong)12伏安(an)(an)全(quan)(quan)電(dian)(dian)壓(ya)。 |