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不合格電線電纜的(de)危害

電線(xian)電纜是用于傳輸電力(li)、傳輸信息和實現電磁能量(liang)轉(zhuan)換的(de)(de)一大類電工(gong)產(chan)(chan)品。在(zai)抽查過程中(zhong)，發現了大量(liang)的(de)(de)不(bu)合格(ge)產(chan)(chan)品，這些(xie)劣質產(chan)(chan)品給電力(li)系統正常運行埋下諸(zhu)多隱患。

1、標(biao)(biao)志不合格(ge)的(de)電線電纜。標(biao)(biao)志是電線電纜使用識別(bie)產品(pin)基(ji)本(ben)信息的(de)主要途徑，根據標(biao)(biao)準規定標(biao)(biao)志的(de)主要內容是：產品(pin)型號(hao)、規格(ge)、標(biao)(biao)準號(hao)、廠名、產地等在一定的(de)標(biao)(biao)示間(jian)距內，當標(biao)(biao)志不合格(ge)時(shi)，會造(zao)成(cheng)施工(gong)人(ren)員(yuan)識別(bie)錯(cuo)誤，嚴(yan)重時(shi)會引(yin)發電氣事故。

2、結構尺寸不(bu)合格的(de)電(dian)(dian)線(xian)電(dian)(dian)纜。結構尺寸的(de)主(zhu)要問題是護套(tao)厚度，絕緣厚度，當(dang)電(dian)(dian)纜的(de)護套(tao)和絕緣厚度不(bu)達標時(shi)，致使電(dian)(dian)線(xian)電(dian)(dian)纜耐電(dian)(dian)氣強度會嚴重(zhong)降(jiang)低，導致電(dian)(dian)線(xian)電(dian)(dian)纜的(de)使用壽命縮短，嚴重(zhong)時(shi)可導致電(dian)(dian)線(xian)電(dian)(dian)纜被擊穿，絕緣（護套(tao)）層起不(bu)到正常保護作用，從而(er)發生電(dian)(dian)氣短路和火(huo)災等現象。

3、護套式絕緣老化前的(de)抗張強度(du)、伸長率合(he)格(ge)的(de)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜。絕緣護套老化前的(de)抗張強度(du)、伸長率不合(he)格(ge)直接大大縮短電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜的(de)工作用壽命，而且在施(shi)工或(huo)在長時(shi)間通電(dian)(dian)(dian)且溫度(du)較高(gao)的(de)環境(jing)中，極易出現(xian)絕緣體斷(duan)裂，致使帶電(dian)(dian)(dian)導體裸露，發生(sheng)能觸(chu)電(dian)(dian)(dian)式短路危險(xian)。其(qi)不合(he)格(ge)的(de)主要(yao)原因是使用了再生(sheng)料生(sheng)產，以降低產品成(cheng)本，二(er)是不具備(bei)生(sheng)產資(zi)格(ge)小(xiao)型企(qi)業。

4、導(dao)(dao)體電(dian)(dian)阻(zu)(zu)(zu)不合(he)格的(de)(de)(de)(de)電(dian)(dian)線(xian)。導(dao)(dao)體電(dian)(dian)阻(zu)(zu)(zu)主(zhu)要(yao)(yao)是考核電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)的(de)(de)(de)(de)導(dao)(dao)體材料以(yi)及截(jie)面(mian)是否符合(he)的(de)(de)(de)(de)重(zhong)要(yao)(yao)指標。當導(dao)(dao)體電(dian)(dian)阻(zu)(zu)(zu)超(chao)(chao)標時，就增大了(le)電(dian)(dian)流(liu)在線(xian)路上通過時的(de)(de)(de)(de)損耗(hao)，加劇了(le)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)的(de)(de)(de)(de)發(fa)熱。導(dao)(dao)體電(dian)(dian)阻(zu)(zu)(zu)不合(he)格的(de)(de)(de)(de)原因(yin)，主(zhu)要(yao)(yao)進(jin)企(qi)業為了(le)降(jiang)低成(cheng)(cheng)本，將占原材料成(cheng)(cheng)本80%的(de)(de)(de)(de)銅(tong)材縮水，要(yao)(yao)么降(jiang)低導(dao)(dao)體的(de)(de)(de)(de)截(jie)面(mian)積，要(yao)(yao)么使(shi)用(yong)含(han)雜質過高(gao)的(de)(de)(de)(de)再生銅(tong)，這樣致使(shi)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)的(de)(de)(de)(de)導(dao)(dao)體電(dian)(dian)阻(zu)(zu)(zu)嚴重(zhong)超(chao)(chao)標，在使(shi)用(yong)過程中除易引發(fa)火災(zai)，還會加速包覆(fu)在電(dian)(dian)線(xian)外的(de)(de)(de)(de)絕(jue)緣層的(de)(de)(de)(de)老化。

在購(gou)買電(dian)線電(dian)纜的過程(cheng)中(zhong)，消費者應注意以下幾個事

第一、要觀(guan)察電(dian)線的(de)外觀(guan)。合(he)格產品的(de)絕緣（護套）層柔(rou)軟、有韌性和伸(shen)縮性、表(biao)面層緊密、光滑、無粗(cu)糙感。如果包裹電(dian)線的(de)塑(su)料很容易被剝去，則存在(zai)塑(su)料強度不夠的(de)問題(ti)。

第二、要(yao)看電(dian)線的截面。合(he)格產品(pin)的銅芯(xin)或鋁芯(xin)表(biao)面應該具(ju)有(you)金屬光(guang)澤，表(biao)面發黑的銅或表(biao)面發白的鋁說明(ming)已被氧化。

第三、在購買電(dian)線(xian)(xian)時應注(zhu)意查看質量合(he)格證書。如(ru)果電(dian)線(xian)(xian)的質量合(he)格，那么其電(dian)線(xian)(xian)質量應該也受過(guo)檢驗，不(bu)會有太大的問題。

沈(shen)陽凱(kai)鵬電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)制(zhi)造有限公司(si)隸屬凱(kai)鵬集團下屬子(zi)公司(si)，專(zhuan)門從事電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)研發(fa)(fa)、生產制(zhi)造，是全國頗(po)具實(shi)力的沈(shen)陽電(dian)(dian)(dian)(dian)(dian)纜(lan)廠家，主營產品：電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)纜(lan)、控制(zhi)電(dian)(dian)(dian)(dian)(dian)纜(lan)、橡套電(dian)(dian)(dian)(dian)(dian)纜(lan)、電(dian)(dian)(dian)(dian)(dian)氣裝備用電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)、電(dian)(dian)(dian)(dian)(dian)子(zi)計算機電(dian)(dian)(dian)(dian)(dian)纜(lan)、BTTZ電(dian)(dian)(dian)(dian)(dian)纜(lan)、YTTW電(dian)(dian)(dian)(dian)(dian)纜(lan)等，以及(ji)電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)代(dai)加工。小編每天會(hui)在公司(si)官(guan)(guan)網發(fa)(fa)布電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)價(jia)格表(biao)，及(ji)時更新銅價(jia)以及(ji)電(dian)(dian)(dian)(dian)(dian)纜(lan)廠報價(jia)信息(xi)。更多有關電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)信息(xi)可點(dian)擊(ji)公司(si)官(guan)(guan)網szbowen.cn