按照英國BS6387電(dian)(dian)纜(lan)耐(nai)火(huo)(huo)(huo)特性測(ce)試標準，只有礦物(wu)(wu)絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)纜(lan)能(neng)(neng)滿足以下(xia)三種測(ce)試：A：明(ming)火(huo)(huo)(huo)燃燒950℃，持續3小(xiao)時，B：明(ming)火(huo)(huo)(huo)燃燒650℃，噴淋水持續15分鐘，C：明(ming)火(huo)(huo)(huo)燃燒950℃，每(mei)隔30秒用重物(wu)(wu)撞(zhuang)擊。礦物(wu)(wu)質電(dian)(dian)纜(lan)一般指礦物(wu)(wu)質絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)纜(lan)，礦物(wu)(wu)質電(dian)(dian)纜(lan)又(you)可以分礦物(wu)(wu)絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)纜(lan)行業礦物(wu)(wu)質防火(huo)(huo)(huo)電(dian)(dian)纜(lan)。礦物(wu)(wu)絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)纜(lan)是一種無機(ji)材料電(dian)(dian)纜(lan)。電(dian)(dian)纜(lan)外層為無縫(feng)銅(tong)(tong)(tong)護套，護套與金(jin)(jin)屬線芯之間(jian)是一層經緊密壓實的氧化(hua)鎂絕(jue)(jue)緣(yuan)(yuan)層。由(you)于電(dian)(dian)纜(lan)全都是用無機(ji)物(wu)(wu)（金(jin)(jin)屬銅(tong)(tong)(tong)和氧化(hua)）組成，它(ta)本身不會引起火(huo)(huo)(huo)災，不可能(neng)(neng)燃燒或助燃，由(you)于銅(tong)(tong)(tong)的熔點(dian)是1083℃，礦物(wu)(wu)絕(jue)(jue)緣(yuan)(yuan)層也是1000℃以上(shang)熔點(dian)。

 在(zai)礦(kuang)物絕緣電(dian)纜中應用(yong)的二(er)種材料銅和礦(kuang)物質(zhi)絕緣是無(wu)機物。此種電(dian)纜不會燃(ran)燒，也不會助燃(ran)，在(zai)接近火焰的條件下(xia)仍可(ke)繼續操作。銅護套在(zai)1083℃下(xia)熔融。絕緣電(dian)線(xian)和阻燃(ran)電(dian)線(xian)有什么區別:

阻(zu)燃(ran)電(dian)(dian)線(xian)(xian)(xian)：適(shi)用(yong)于交(jiao)流額定電(dian)(dian)壓110kV塑料(liao)(liao)絕緣(yuan)電(dian)(dian)力電(dian)(dian)纜(lan)(lan)、450/750V塑料(liao)(liao)絕緣(yuan)控(kong)制電(dian)(dian)線(xian)(xian)(xian)、450/750V及(ji)以下電(dian)(dian)氣設備(bei)。主要用(yong)于輸配電(dian)(dian)、控(kong)制、報警、消(xiao)防系統產(chan)品(pin)線(xian)(xian)(xian)等。絕緣(yuan)電(dian)(dian)線(xian)(xian)(xian)：用(yong)作(zuo)儀器(qi)和設備(bei)的(de)內(nei)部接線(xian)(xian)(xian)。礦(kuang)(kuang)(kuang)物絕緣(yuan)電(dian)(dian)纜(lan)(lan)簡(jian)稱MI電(dian)(dian)纜(lan)(lan)，作(zuo)為(wei)配線(xian)(xian)(xian)使(shi)用(yong)時(shi)，國(guo)內(nei)習慣稱作(zuo)氧化鎂電(dian)(dian)纜(lan)(lan)或防火電(dian)(dian)纜(lan)(lan)。它(ta)是(shi)由(you)礦(kuang)(kuang)(kuang)物材料(liao)(liao)氧化作(zuo)為(wei)絕緣(yuan)的(de)銅(tong)(tong)芯銅(tong)(tong)護套電(dian)(dian)纜(lan)(lan)，礦(kuang)(kuang)(kuang)物絕緣(yuan)電(dian)(dian)纜(lan)(lan)由(you)銅(tong)(tong)導(dao)體、氧化鎂、銅(tong)(tong)護套兩(liang)種無機材料(liao)(liao)組成。

 礦(kuang)物(wu)絕緣(yuan)電(dian)(dian)纜的(de)(de)(de)(de)銅(tong)護(hu)套(tao)(tao)(tao)具有高耐腐蝕性，對(dui)于大多數的(de)(de)(de)(de)裝置(zhi)來(lai)說，它(ta)不(bu)需要采取附(fu)加的(de)(de)(de)(de)防護(hu)措施。在(zai)電(dian)(dian)纜的(de)(de)(de)(de)銅(tong)護(hu)套(tao)(tao)(tao)易遭(zao)受(shou)化(hua)學品腐蝕或工業染污嚴重的(de)(de)(de)(de)地(di)方(fang)，應使用(yong)包有塑料(liao)外護(hu)套(tao)(tao)(tao)保(bao)(bao)護(hu)礦(kuang)物(wu)絕緣(yuan)電(dian)(dian)纜。由于電(dian)(dian)纜全都(dou)是(shi)(shi)用(yong)無(wu)機(ji)物(wu)（金屬銅(tong)和氧化(hua)）組成，它(ta)本身不(bu)會引起(qi)火(huo)(huo)災，不(bu)可(ke)能(neng)(neng)燃(ran)燒或助燃(ran)，由于銅(tong)的(de)(de)(de)(de)熔點(dian)是(shi)(shi)1083℃，礦(kuang)物(wu)質絕緣(yuan)電(dian)(dian)纜公司，礦(kuang)物(wu)絕緣(yuan)層也(ye)是(shi)(shi)1000℃以上熔點(dian)。因此(ci)該種電(dian)(dian)纜可(ke)以在(zai)接近銅(tong)的(de)(de)(de)(de)熔點(dian)的(de)(de)(de)(de)火(huo)(huo)災情況下繼(ji)續保(bao)(bao)持供電(dian)(dian)，是(shi)(shi)一種真正意義上的(de)(de)(de)(de)防火(huo)(huo)電(dian)(dian)纜。并能(neng)(neng)通(tong)過BS6387 C、W、Z試(shi)驗。銅(tong)護(hu)套(tao)(tao)(tao)可(ke)以作接地(di)線：對(dui)于礦(kuang)物(wu)絕緣(yuan)電(dian)(dian)纜，由于銅(tong)護(hu)套(tao)(tao)(tao)的(de)(de)(de)(de)連續性和極低的(de)(de)(de)(de)接地(di)電(dian)(dian)阻(zu)，因此(ci)可(ke)以作為接地(di)導(dao)線使用(yong)，不(bu)需要獨立的(de)(de)(de)(de)接地(di)導(dao)線。