
光伏聚錄乙烯電纜廠家電(dian)(dian)纜(lan)時(shi)常暴(bao)露在(zai)陽光之下(xia)(xia),太陽能(neng)系(xi)(xi)統(tong)常常會在(zai)惡(e)劣(lie)環境條件下(xia)(xia)使用(yong),如高(gao)溫和紫外線輻射。在(zai)歐洲,晴天時(shi)將(jiang)導致太陽能(neng)系(xi)(xi)統(tong)的(de)(de)(de)現(xian)場溫度(du)(du)高(gao)達(da)100°C。目(mu)前,我們可采用(yong)的(de)(de)(de)各種材料有(you)PVC、橡膠、TPE和高(gao)質量(liang)交叉(cha)鏈(lian)接材料,但遺憾的(de)(de)(de)是(shi)(shi),額(e)定溫度(du)(du)為90°C的(de)(de)(de)橡膠電(dian)(dian)纜(lan),還有(you)即便(bian)是(shi)(shi)額(e)定溫度(du)(du)為70°C的(de)(de)(de)PVC電(dian)(dian)纜(lan)也(ye)常常在(zai)戶外使用(yong),,目(mu)前國(guo)家(jia)金太陽工程(cheng)頻(pin)頻(pin)上馬,有(you)許(xu)多(duo)承建商(shang)為了(le)節省成本(ben),不選擇太陽能(neng)系(xi)(xi)統(tong)專用(yong)電(dian)(dian)纜(lan),而(er)是(shi)(shi)選擇普通(tong)的(de)(de)(de)pvc電(dian)(dian)纜(lan)來替代光伏電(dian)(dian)纜(lan),顯然,這將(jiang)大大影響系(xi)(xi)統(tong)的(de)(de)(de)使用(yong)壽命。
據統計,截至目前,江西專業生產聚錄乙烯電纜廠家湖(hu)(hu)北電(dian)網(wang)高電(dian)壓基(ji)建工(gong)程復(fu)(fu)工(gong)37項,配(pei)電(dian)網(wang)工(gong)程復(fu)(fu)工(gong)365項目(mu)。國網(wang)湖(hu)(hu)北電(dian)力將(jiang)嚴格落實(shi)“三個不(bu)變”(計劃不(bu)調、任務不(bu)減、目(mu)標(biao)(biao)不(bu)變),在4月底前,除武漢地區(qu)以外(wai)電(dian)網(wang)建設工(gong)程復(fu)(fu)工(gong)率將(jiang)達100%,確(que)保(bao)順利完成年度目(mu)標(biao)(biao)任務。3月30日,陜北-湖(hu)(hu)北特(te)高壓±800千伏直流(liu)工(gong)程湖(hu)(hu)北段正式開(kai)工(gong)。特(te)高壓作為(wei)“新基(ji)建”七(qi)大領域(yu)之一(yi),產業(ye)鏈(lian)包(bao)括電(dian)源、電(dian)工(gong)裝(zhuang)備、用能(neng)設備、原材料等(deng)。電(dian)網(wang)建設工(gong)程對(dui)產業(ye)鏈(lian)帶動作用明(ming)顯。陜北-湖(hu)(hu)北工(gong)程總投資(zi)185億(yi)元,其中湖(hu)(hu)北境(jing)內投資(zi)60億(yi)。
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聚錄乙烯電纜延伸1000米(mi)都(dou)是沒有問題的,而剛性BTTZ電纜需要考(kao)慮過(guo)長(chang)的電纜不易存放,并且不容(rong)易生產制作,所以YTTW礦物電纜能夠避(bi)免長(chang)度要求(qiu)的規范,不用擔心使用的時候長(chang)度不足使用接(jie)口(kou)。
1. 看電纜電線長度:江西專業生產聚錄乙烯電纜國家標準規(gui)定(ding),電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜每(mei)卷(juan)100米,計量(liang)誤差不大于0.5%,也(ye)就是(shi)每(mei)卷(juan)線(xian)(xian)的(de)(de)長度(du)為100±0.5米,但是(shi)有(you)(you)些(xie)(xie)商家標注的(de)(de)是(shi)100±20米,但實際(ji)上,卻只有(you)(you)80米左右。2. 看電(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)(zhi):電(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)(zhi)超(chao)標的(de)(de)話(hua),電(dian)(dian)(dian)(dian)線(xian)(xian)就容(rong)(rong)易(yi)(yi)出(chu)現(xian)溫(wen)度(du)過(guo)高(gao)、老(lao)(lao)化(hua)的(de)(de)危險,而且如果(guo)電(dian)(dian)(dian)(dian)線(xian)(xian)短(duan)路的(de)(de)話(hua),還(huan)會(hui)引發(fa)(fa)火災。并(bing)且電(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)(zhi)超(chao)標,還(huan)增(zeng)加(jia)傳(chuan)輸電(dian)(dian)(dian)(dian)量(liang)時的(de)(de)消(xiao)耗,增(zeng)加(jia)電(dian)(dian)(dian)(dian)費,所(suo)以(yi),我(wo)們(men)在選擇時,一(yi)(yi)定(ding)要留(liu)意這(zhe)一(yi)(yi)點。3.看原材(cai)料:純銅(tong)芯(xin)的(de)(de)材(cai)料導(dao)(dao)電(dian)(dian)(dian)(dian)性好(hao),而且不易(yi)(yi)老(lao)(lao)化(hua),更加(jia)耐用,也(ye)減少了故(gu)障發(fa)(fa)生。但是(shi)有(you)(you)些(xie)(xie)商家,會(hui)在銅(tong)材(cai)質(zhi)中(zhong)添(tian)加(jia)一(yi)(yi)些(xie)(xie)雜質(zhi)銅(tong)、回收(shou)銅(tong),還(huan)有(you)(you)的(de)(de)劣質(zhi)產(chan)品通過(guo)降低銅(tong)芯(xin)實際(ji)截面(mian)積,來減少銅(tong)材(cai)質(zhi)的(de)(de)用量(liang),這(zhe)樣容(rong)(rong)易(yi)(yi)導(dao)(dao)致(zhi)電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜用電(dian)(dian)(dian)(dian)過(guo)程中(zhong)發(fa)(fa)熱,損壞外邊的(de)(de)絕緣層塑料,容(rong)(rong)易(yi)(yi)讓電(dian)(dian)(dian)(dian)線(xian)(xian)老(lao)(lao)化(hua),導(dao)(dao)致(zhi)出(chu)現(xian)漏電(dian)(dian)(dian)(dian)、短(duan)路的(de)(de)問題。
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