消防電纜為什么要用礦物絕緣電纜的理由
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來源:金環宇電纜發布(bu)日期:2019-09-27 15:47
消(xiao)防(fang)電(dian)(dian)纜和非消(xiao)防(fang)電(dian)(dian)纜分(fen)設(she)(she)于兩個不同的(de)電(dian)(dian)井,或者消(xiao)防(fang)電(dian)(dian)纜全部穿鋼管暗敷設(she)(she)在(zai)墻內,一(yi)樣需要采用礦物絕緣電(dian)(dian)纜。
消防電纜為什么要用礦物絕緣電纜的理由
《建筑設計防火規范》GB50016-2014中10.1.10第3條(tiao)規定:
消防配電(dian)(dian)線路(lu)宜(yi)與其他配電(dian)(dian)線路(lu)分(fen)開敷(fu)設(she)在不(bu)同(tong)的電(dian)(dian)纜(lan)井(jing)、溝內;確(que)有(you)困難需(xu)敷(fu)設(she)在同(tong)一電(dian)(dian)纜(lan)井(jing)、溝內時,應(ying)(ying)分(fen)別布置在電(dian)(dian)纜(lan)井(jing)、溝的兩側,且消防配電(dian)(dian)線路(lu)應(ying)(ying)采用礦物絕(jue)緣類不(bu)燃(ran)性電(dian)(dian)纜(lan)。
受限于(yu)低(di)壓配電(dian)房面積,目前低(di)壓配電(dian)房內的電(dian)纜(lan)(lan)溝(gou)幾乎(hu)都(dou)為(wei)(wei)消防與(yu)(yu)非消防電(dian)纜(lan)(lan)共用的電(dian)纜(lan)(lan)溝(gou),就因為(wei)(wei)這點,消防線(xian)路(lu)在配電(dian)房電(dian)纜(lan)(lan)溝(gou)內無法(fa)與(yu)(yu)非消防線(xian)路(lu)完(wan)全隔離(li),所以需(xu)要消防電(dian)纜(lan)(lan)需(xu)要用礦物絕(jue)緣電(dian)纜(lan)(lan)。
如果消防電纜想采用耐火電纜來節約(yue)成本,那么(me)必須保證非(fei)居變壓器低(di)壓出線(xian)柜消(xiao)(xiao)防電(dian)(dian)源柜和非(fei)消(xiao)(xiao)防電(dian)(dian)源柜完(wan)全分(fen)開,并且(qie)要為(wei)消(xiao)(xiao)防線(xian)路(lu)(lu)單獨設(she)置電(dian)(dian)纜溝,地上消(xiao)(xiao)防電(dian)(dian)纜和非(fei)消(xiao)(xiao)防電(dian)(dian)纜應分(fen)設(she)于(yu)兩個不同的(de)電(dian)(dian)井(jing),或者消(xiao)(xiao)防電(dian)(dian)纜全部穿鋼管(guan)暗敷設(she),保證消(xiao)(xiao)防線(xian)路(lu)(lu)從低(di)壓配(pei)電(dian)(dian)房到(dao)末端(duan)設(she)備(bei),都為(wei)消(xiao)(xiao)防專(zhuan)用線(xian)路(lu)(lu)敷設(she)。