耐火低壓電纜的表述、進行分類及選擇使用

        耐(nai)(nai)火(huo)(huo)(huo)拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)：指在(zai)指定(ding)試(shi)(shi)驗報(bao)告具體要求下，試(shi)(shi)件材料(liao)在(zai)藍色火(huo)(huo)(huo)焰中(zhong)被焚(fen)燒(shao)(shao)(shao)，在(zai)固定(ding)日期內仍(reng)能實(shi)現(xian)沒問題啟用(yong)的(de)(de)能。它的(de)(de)必然特(te)征都(dou)是：拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)在(zai)焚(fen)燒(shao)(shao)(shao)具體要求下即使能保(bao)證(zheng)(zheng)該方式(shi)三段(duan)日期的(de)(de)沒問題本(ben)職工作。簡(jian)單(dan)的(de)(de)地(di)講都(dou)是，假(jia)如出(chu)(chu)現(xian)著(zhu)火(huo)(huo)(huo)，拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)是不會(hui)一會(hui)就焚(fen)燒(shao)(shao)(shao)，電(dian)(dian)(dian)(dian)路(lu)(lu)開關(guan)相對比較(jiao)安全防(fang)護。往往耐(nai)(nai)火(huo)(huo)(huo)拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)與(yu)阻然性(xing)(xing)拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)的(de)(de)主(zhu)耍區別是：耐(nai)(nai)火(huo)(huo)(huo)拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)在(zai)出(chu)(chu)現(xian)著(zhu)火(huo)(huo)(huo)出(chu)(chu)現(xian)時能保(bao)證(zheng)(zheng)三段(duan)日期的(de)(de)沒問題送(song)(song)電(dian)(dian)(dian)(dian)，而(er)阻然性(xing)(xing)拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)不擁(yong)有這樣特(te)征。該拖(tuo)(tuo)(tuo)鏈(lian)電(dian)(dian)(dian)(dian)攬(lan)(lan)(lan)(lan)(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)(xian)(xian)線(xian)(xian)(xian)主(zhu)耍利用(yong)在(zai)危(wei)急(ji)救援(yuan)主(zhu)機交(jiao)流電(dian)(dian)(dian)(dian)源至普通用(yong)戶消防(fang)設(she)(she)施設(she)(she)配(pei)、出(chu)(chu)現(xian)著(zhu)火(huo)(huo)(huo)報(bao)警設(she)(she)配(pei)、送(song)(song)風排(pai)風系統設(she)(she)配(pei)、導行(xing)燈、危(wei)急(ji)主(zhu)機交(jiao)流電(dian)(dian)(dian)(dian)源排(pai)插(cha)、危(wei)急(ji)電(dian)(dian)(dian)(dian)量(liang)梯等送(song)(song)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)路(lu)(lu)開關(guan)。 

        平民(min)耐(nai)火(huo)(huo)(huo)電(dian)(dian)(dian)(dian)(dian)攬(lan)(lan)可(ke)分為(wei)A類(lei)和(he)B類(lei)：B類(lei)電(dian)(dian)(dian)(dian)(dian)攬(lan)(lan)就可(ke)以(yi)在(zai)(zai)750℃～800℃的(de)焰火(huo)(huo)(huo)中合(he)(he)穩定(ding)值端(duan)電(dian)(dian)(dian)(dian)(dian)阻(zu)下耐(nai)熱(re)力丙烷燃燒物也(ye)也(ye)至(zhi)少要要90min而(er)電(dian)(dian)(dian)(dian)(dian)攬(lan)(lan)不(bu)被穿透電(dian)(dian)(dian)(dian)(dian)阻(zu)（即(ji)3A保障(zhang)絲不(bu)穿透)。在(zai)(zai)改進方案(an)耐(nai)火(huo)(huo)(huo)層生產加工生產技術和(he)不(bu)斷增加耐(nai)火(huo)(huo)(huo)層等措(cuo)施的(de)基(ji)礎框(kuang)架上(shang)又(you)工業化(hua)生產了A類(lei)耐(nai)火(huo)(huo)(huo)電(dian)(dian)(dian)(dian)(dian)攬(lan)(lan)，它(ta)就可(ke)以(yi)在(zai)(zai)950℃～1 000℃的(de)焰火(huo)(huo)(huo)中合(he)(he)穩定(ding)值端(duan)電(dian)(dian)(dian)(dian)(dian)阻(zu)下耐(nai)熱(re)力丙烷燃燒物也(ye)也(ye)至(zhi)少要要90min而(er)電(dian)(dian)(dian)(dian)(dian)攬(lan)(lan)不(bu)被穿透電(dian)(dian)(dian)(dian)(dian)阻(zu)（即(ji)3A保障(zhang)絲不(bu)穿透)。A類(lei)耐(nai)火(huo)(huo)(huo)電(dian)(dian)(dian)(dian)(dian)攬(lan)(lan)的(de)耐(nai)火(huo)(huo)(huo)耐(nai)磨性高于B類(lei)。 

應用應當：

（1）當耐火高壓(ya)(ya)(ya)電(dian)攬線(xian)(xian)使用在(zai)高壓(ya)(ya)(ya)電(dian)攬線(xian)(xian)密(mi)集點(dian)的高壓(ya)(ya)(ya)電(dian)攬線(xian)(xian)隧(sui)道工程、高壓(ya)(ya)(ya)電(dian)攬線(xian)(xian)半層中，或地處液壓(ya)(ya)(ya)管、油庫周(zhou)邊等易燃(ran)性場所時，應應當選購(gou)A類(lei)耐火高壓(ya)(ya)(ya)電(dian)攬線(xian)(xian)。除(chu)下列事情(qing)外(wai)且高壓(ya)(ya)(ya)電(dian)攬線(xian)(xian)手機配(pei)置量少時，可用到B類(lei)耐火高壓(ya)(ya)(ya)電(dian)攬線(xian)(xian)。

（2）耐火(huo)電(dian)(dian)線電(dian)(dian)攬大多數用來作為應激用電(dian)(dian)的(de)(de)用電(dian)(dian)二次(ci)回路(lu)開關(guan)，需求(qiu)發生火(huo)情時(shi)日常辦公。仍然發生火(huo)情時(shi)環保(bao)體溫激增飆(biao)升，為保(bao)護火(huo)車電(dian)(dian)攬線的(de)(de)輸料電(dian)(dian)容量(liang)，削(xue)減壓降，這對(dui)于(yu)用電(dian)(dian)火(huo)車電(dian)(dian)攬線較長且嚴要求(qiu)限制(zhi)容許(xu)電(dian)(dian)流值降的(de)(de)二次(ci)回路(lu)開關(guan)，應將耐火(huo)電(dian)(dian)線電(dian)(dian)攬受力每組變(bian)成一(yi)期。

（3）耐火數據線(xian)(xian)不要比(bi)做耐高(gao)的(de)溫度數據線(xian)(xian)用到。

（4）為降低了拖鏈電纜接法頭在起火傷亡事故中的錯誤碼機率，在按裝中盡義務量以減少接法頭數，以保持路線圖在起火里能順利工作上。要是必須 做節點接法，對付接法頭做到防火性解決。