河北阻燃的交聯銅電纜批發復工復產順利推(tui)進 3月(yue)份發(fa)用(yong)電(dian)量回升明(ming)顯，從發(fa)電(dian)看，今年前2個月(yue)全國(guo)規模以上工業發(fa)電(dian)量同比(bi)下(xia)降8.2%。其中，火(huo)電(dian)、水電(dian)、核電(dian)、風電(dian)發(fa)電(dian)同比(bi)分別下(xia)降8.9%、11.9%、2.2%、0.2%，太(tai)陽能發(fa)電(dian)同比(bi)增長12.0%。

近年來國家大力進行城市電網建設、交聯銅電纜農(nong)網改造及城(cheng)市軌道(dao)交(jiao)通的(de)(de)(de)(de)(de)(de)建(jian)設，頒布了若干利(li)(li)好政策(ce)。這(zhe)些行(xing)(xing)業(ye)(ye)的(de)(de)(de)(de)(de)(de)發(fa)展將(jiang)為上(shang)游電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)生(sheng)產(chan)(chan)企(qi)業(ye)(ye)帶(dai)來(lai)(lai)大(da)量的(de)(de)(de)(de)(de)(de)訂單。同時(shi)，由于因(yin)(yin)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)質(zhi)量原因(yin)(yin)導致的(de)(de)(de)(de)(de)(de)火(huo)災居高不下，為防止(zhi)重(zhong)大(da)事故的(de)(de)(de)(de)(de)(de)再(zai)次發(fa)生(sheng)，國(guo)(guo)(guo)家(jia)(jia)在電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)行(xing)(xing)業(ye)(ye)和產(chan)(chan)品標準方面的(de)(de)(de)(de)(de)(de)管控越來(lai)(lai)越嚴格(ge)(ge)，新的(de)(de)(de)(de)(de)(de)技術標準不斷出臺。電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)產(chan)(chan)品的(de)(de)(de)(de)(de)(de)成本中(zhong)(zhong)原材料(liao)的(de)(de)(de)(de)(de)(de)比重(zhong)在80%左右(you)，包括(kuo)銅、鋁(lv)和塑(su)料(liao)等，據(ju)相關(guan)測算，原材料(liao)價格(ge)(ge)每上(shang)漲5%，相當于利(li)(li)潤減少(shao)4%。銅和鋁(lv)是電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)生(sheng)產(chan)(chan)最重(zhong)要(yao)的(de)(de)(de)(de)(de)(de)原材料(liao)，他(ta)們價格(ge)(ge)的(de)(de)(de)(de)(de)(de)漲跌，決定著電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)企(qi)業(ye)(ye)的(de)(de)(de)(de)(de)(de)利(li)(li)潤。同時(shi)，從目前(qian)我國(guo)(guo)(guo)銅需求(qiu)的(de)(de)(de)(de)(de)(de)結(jie)構來(lai)(lai)看(kan)，電(dian)(dian)力工業(ye)(ye)所占(zhan)份額(e)最大(da)，超(chao)過50%，主要(yao)用于電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)、變(bian)壓器、開關(guan)、連接(jie)件等。其中(zhong)(zhong)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)對銅的(de)(de)(de)(de)(de)(de)需求(qiu)量占(zhan)電(dian)(dian)力工業(ye)(ye)的(de)(de)(de)(de)(de)(de)90%以上(shang)。因(yin)(yin)此，電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)行(xing)(xing)業(ye)(ye)的(de)(de)(de)(de)(de)(de)發(fa)展無疑(yi)也(ye)將(jiang)影響到銅的(de)(de)(de)(de)(de)(de)需求(qiu)量和價格(ge)(ge)。國(guo)(guo)(guo)家(jia)(jia)電(dian)(dian)網在2014年5月首次提(ti)出中(zhong)(zhong)國(guo)(guo)(guo)經濟新常(chang)態，目前(qian)政策(ce)有利(li)(li)于特高壓建(jian)設，國(guo)(guo)(guo)家(jia)(jia)電(dian)(dian)網2015年規劃的(de)(de)(de)(de)(de)(de)13條線(xian)路(lu)預計能夠拉動超(chao)過3000億元的(de)(de)(de)(de)(de)(de)投資，另外(wai)(wai)國(guo)(guo)(guo)家(jia)(jia)電(dian)(dian)網也(ye)借助(zhu)"一(yi)帶(dai)一(yi)路(lu)"推動特高壓建(jian)設，因(yin)(yin)此未來(lai)(lai)五年會是特高壓行(xing)(xing)業(ye)(ye)的(de)(de)(de)(de)(de)(de)黃金發(fa)展周期，電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)企(qi)業(ye)(ye)也(ye)將(jiang)獲益豐厚。近日，國(guo)(guo)(guo)外(wai)(wai)知名研究網站(zhan)報道(dao)，未來(lai)(lai)5年，中(zhong)(zhong)國(guo)(guo)(guo)將(jiang)進入超(chao)高壓發(fa)展的(de)(de)(de)(de)(de)(de)黃金時(shi)代，這(zhe)使中(zhong)(zhong)國(guo)(guo)(guo)的(de)(de)(de)(de)(de)(de)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)(lan)市場以8-9%的(de)(de)(de)(de)(de)(de)年增率發(fa)展。

首先是針對防火特性上，不管是柔性的YTTW礦物電纜還是剛性的BTTZ電纜，兩者的存在都是為了保證電纜在一定的火焰以及高溫下能夠保證電纜的正常運作，所以它們的防火性能都是極為不錯的。但是從高溫的狀態來講，柔性的YTTW礦物電纜能夠承受的極限溫度為1083攝氏度，而剛性BTTZ電纜只有1000攝氏度，并且柔性YTTW礦物電纜能夠在950在1000攝氏度高溫中運行3小時，BTTZ電纜只能維持半小時而已。然后是區分電纜的制作長度，因為工藝特性原因。YTTW礦物電纜因為比較柔和一些，在制作的時候能夠將其長度交聯銅電纜延伸1000米(mi)都是沒有問(wen)題的，而剛性BTTZ電纜需要考慮過長(chang)的電纜不易(yi)(yi)存放，并(bing)且(qie)不容(rong)易(yi)(yi)生(sheng)產制作，所以YTTW礦(kuang)物電纜能夠避免(mian)長(chang)度要求的規范，不用擔心使(shi)(shi)用的時候(hou)長(chang)度不足使(shi)(shi)用接(jie)口。

阻燃的交聯銅電纜批發每一(yi)種電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)的用途不(bu)同，那是因(yin)(yin)為(wei)(wei)它具(ju)有(you)其他電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)沒(mei)有(you)的特點(dian)，因(yin)(yin)此(ci)我們在選購(gou)低(di)煙無(wu)(wu)(wu)鹵(lu)阻(zu)燃(ran)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)之前還是先來了解(jie)一(yi)下(xia)低(di)煙無(wu)(wu)(wu)鹵(lu)阻(zu)燃(ran)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)的特點(dian)是什么吧。1.低(di)煙無(wu)(wu)(wu)鹵(lu)阻(zu)燃(ran)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)的特點(dian)--抗張(zhang)(zhang)強(qiang)度(du)比一(yi)般PVC電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)大(da)：一(yi)般PVC電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)抗張(zhang)(zhang)強(qiang)度(du)大(da)于(yu)(yu)1.05Kgf/mm2，而低(di)煙無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)抗張(zhang)(zhang)強(qiang)度(du)大(da)于(yu)(yu)1.2Kgf/mm2;2.低(di)煙無(wu)(wu)(wu)鹵(lu)阻(zu)燃(ran)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)的特點(dian)--具(ju)有(you)良好的耐候性(-30℃~105℃);具(ju)備良好的柔軟的度(du)(硬度(du)為(wei)(wei)80-90);3.低(di)煙無(wu)(wu)(wu)鹵(lu)阻(zu)燃(ran)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)的特點(dian)--具(ju)有(you)非移(yi)性(因(yin)(yin)為(wei)(wei)此(ci)產(chan)品(pin)配(pei)方中不(bu)用添加可(ke)塑(su)劑，故(gu)不(bu)會(hui)有(you)移(yi)形性);燃(ran)燒(shao)時不(bu)會(hui)產(chan)生有(you)毒黑煙(會(hui)產(chan)生少量白色煙霧(wu));具(ju)有(you)較高(gao)的體積電(dian)(dian)(dian)(dian)(dian)阻(zu)率：PVC電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)一(yi)般為(wei)(wei)1012~1015Ω/cm3，低(di)煙無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)大(da)于(yu)(yu)1016Ω/cm3;

目前，南方交聯銅電纜電(dian)網正加快推進特(te)高(gao)(gao)壓(ya)(ya)等新型基(ji)礎設施項目建(jian)設。在南(nan)方(fang)電(dian)網重點(dian)特(te)高(gao)(gao)壓(ya)(ya)工(gong)程(cheng)——昆柳龍直流輸電(dian)工(gong)程(cheng)建(jian)設方(fang)面，南(nan)網科研院(yuan)科研工(gong)作者(zhe)已連續攻克了特(te)高(gao)(gao)電(dian)壓(ya)(ya)、特(te)大電(dian)流下的絕緣特(te)性、電(dian)磁(ci)環境、設備(bei)研制、試驗技術等世(shi)界級難題(ti)。有(you)力推動了這個世(shi)界首個特(te)高(gao)(gao)壓(ya)(ya)多端(duan)混合直流工(gong)程(cheng)、國家特(te)高(gao)(gao)壓(ya)(ya)多端(duan)直流示范工(gong)程(cheng)的建(jian)設進度。