東北防火電纜雖然新發布的我國數據標準要求全部線纜選用CMP級歸納布線纜線，即其能夠在500℃的溫度時，仍然能夠不損毀，正常傳輸數據，為信息急迫備份留下必定的時間，可是其并不能滿足國家標準中關于防火線纜的要求，其并不能稱之為耐火電纜耐火(huo)(huo)(huo)電(dian)纜(lan)是(shi)指在火(huo)(huo)(huo)焰(yan)焚燒(shao)情況(kuang)下(xia)能夠堅(jian)持(chi)必(bi)定時間(jian)保證運轉的電(dian)纜(lan)。我國國家標準GB12666.6（等(deng)IEC331）將耐火(huo)(huo)(huo)實驗分A、B兩(liang)種等(deng)級(ji)(ji)，A級(ji)(ji)火(huo)(huo)(huo)焰(yan)溫(wen)度(du)950~1000℃，持(chi)續(xu)供(gong)火(huo)(huo)(huo)時間(jian)90min，B級(ji)(ji)火(huo)(huo)(huo)焰(yan)溫(wen)度(du)750~800℃，持(chi)續(xu)供(gong)火(huo)(huo)(huo)時間(jian)90 min，整個實驗期間(jian)，試樣(yang)應承受產品規(gui)則的額定電(dian)壓值(zhi)。耐火(huo)(huo)(huo)電(dian)纜(lan)廣泛應用于高層(ceng)建(jian)筑、地下(xia)鐵(tie)道、地下(xia)街(jie)、大型電(dian)站及(ji)重(zhong)要的工礦(kuang)企(qi)業(ye)等(deng)與(yu)防(fang)火(huo)(huo)(huo)保證和消防(fang)救(jiu)生有關的當地，例如，消防(fang)設備及(ji)急迫導游燈等(deng)應急設備的供(gong)電(dian)線(xian)路和控制線(xian)路。

防火電纜柔性礦藏絕緣電纜（bbtrz）是一種具有一般產品特性的電纜。由于選用有機高分子資料進行絕緣，在火焰條件下很簡單碳化，失去絕緣作用。由于柔性礦藏絕緣防火電纜（bbtrz）的首要資料是礦藏化合物，本身不會引起火災，不可能焚燒或支撐火災。這些資料的熔點一般都在1500℃以上。

防(fang)(fang)火(huo)電(dian)(dian)纜(lan)因此即使在(zai)火(huo)焰條件下(xia)運用(yong)(yong)，防(fang)(fang)火(huo)電(dian)(dian)纜(lan)也能(neng)起(qi)到正常(chang)的(de)(de)(de)傳輸功用(yong)(yong)，是(shi)一種防(fang)(fang)火(huo)電(dian)(dian)纜(lan)。目前市場(chang)上的(de)(de)(de)國產電(dian)(dian)線(xian)(xian)首(shou)要分為銅(tong)(tong)線(xian)(xian)和(he)鋁線(xian)(xian)。許多小白裝飾比較糾結，為了家(jia)庭用(yong)(yong)電(dian)(dian)，應(ying)該選擇哪個(ge)更好？接下(xia)來(lai)，我們來(lai)分析一下(xia)家(jia)用(yong)(yong)電(dian)(dian)線(xian)(xian)是(shi)用(yong)(yong)銅(tong)(tong)線(xian)(xian)還(huan)是(shi)鋁線(xian)(xian)比較好，負載功率：銅(tong)(tong)線(xian)(xian)的(de)(de)(de)導電(dian)(dian)性(xing)優于(yu)鋁線(xian)(xian)。同一截面的(de)(de)(de)銅(tong)(tong)線(xian)(xian)和(he)鋁線(xian)(xian)的(de)(de)(de)負載功率均高于(yu)鋁線(xian)(xian)，力學性(xing)能(neng)：退火(huo)銅(tong)(tong)線(xian)(xian)具有較好的(de)(de)(de)柔韌性(xing)、曲(qu)折方(fang)便、抗疲勞性(xing)強(qiang)、機械強(qiang)度遠優于(yu)鋁線(xian)(xian)。鋁線(xian)(xian)曲(qu)折時(shi)比較簡單折斷(duan)。

礦(kuang)(kuang)藏(zang)(zang)質(zhi)(zhi)絕緣(yuan)防(fang)(fang)火(huo)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)因為這種(zhong)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)全(quan)部資料(liao)都是選用(yong)無機資料(liao)，所以它就具有(you)一些其他電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)所不(bu)可能具有(you)的(de)利益。耐火(huo)，在(zai)礦(kuang)(kuang)藏(zang)(zang)絕緣(yuan)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)中(zhong)(zhong)運(yun)用(yong)的(de)二種(zhong)資料(liao)銅和(he)(he)礦(kuang)(kuang)藏(zang)(zang)質(zhi)(zhi)絕緣(yuan)是無機物。此種(zhong)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)不(bu)會焚燒，也不(bu)會助(zhu)燃，在(zai)靠(kao)近火(huo)焰的(de)條件下(xia)仍(reng)可持(chi)續操(cao)(cao)作(zuo)(zuo)。銅護(hu)套在(zai)1083℃下(xia)熔融。操(cao)(cao)作(zuo)(zuo)溫度(du)高，礦(kuang)(kuang)藏(zang)(zang)絕緣(yuan)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)可耐連續操(cao)(cao)作(zuo)(zuo)溫度(du)高達250℃。在(zai)急迫情況下(xia)，電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)可在(zai)靠(kao)近銅護(hu)套熔點(dian)的(de)溫度(du)下(xia)，在(zai)短時間(jian)內持(chi)續操(cao)(cao)作(zuo)(zuo)。壽命(ming)長，在(zai)礦(kuang)(kuang)藏(zang)(zang)絕緣(yuan)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)中(zhong)(zhong)運(yun)用(yong)的(de)無機資料(liao)，可確(que)保電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)具有(you)穩定性(xing)、壽命(ming)長和(he)(he)耐火(huo)性(xing)。防(fang)(fang)爆性(xing)，礦(kuang)(kuang)藏(zang)(zang)絕緣(yuan)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)中(zhong)(zhong)高度(du)壓(ya)實的(de)絕緣(yuan)資料(liao)，可阻遏蒸汽、氣體和(he)(he)火(huo)焰在(zai)與電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)聯接的(de)設備(bei)零(ling)件之間(jian)經(jing)過(guo)。外徑(jing)小，礦(kuang)(kuang)藏(zang)(zang)絕緣(yuan)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)直(zhi)徑(jing)比(bi)其他額(e)定電(dian)(dian)(dian)(dian)(dian)流相同的(de)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)要小。

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