国产精品成人网站/两攻一受3p双龙h调教/玩弄人妻少妇500系列/人妻换人妻仑乱/国产成人一区二区三区别

不合格電線(xian)電纜(lan)的(de)危害

電(dian)(dian)線電(dian)(dian)纜(lan)是用(yong)于(yu)傳輸(shu)電(dian)(dian)力(li)、傳輸(shu)信息和實現(xian)電(dian)(dian)磁(ci)能量轉換(huan)的(de)一(yi)大(da)類電(dian)(dian)工(gong)產(chan)品。在抽查(cha)過程中(zhong)，發現(xian)了大(da)量的(de)不合格產(chan)品，這(zhe)些劣質產(chan)品給(gei)電(dian)(dian)力(li)系統正常運行埋(mai)下諸多隱患。

1、標(biao)志(zhi)不合格(ge)的(de)電(dian)線(xian)電(dian)纜。標(biao)志(zhi)是電(dian)線(xian)電(dian)纜使用識(shi)別產(chan)品基本信息的(de)主(zhu)要途(tu)徑，根(gen)據(ju)標(biao)準(zhun)規(gui)定(ding)標(biao)志(zhi)的(de)主(zhu)要內容是：產(chan)品型號(hao)、規(gui)格(ge)、標(biao)準(zhun)號(hao)、廠名(ming)、產(chan)地等在(zai)一定(ding)的(de)標(biao)示間距內，當標(biao)志(zhi)不合格(ge)時(shi)，會造成施(shi)工人員識(shi)別錯(cuo)誤，嚴重時(shi)會引發電(dian)氣事故。

2、結構尺寸(cun)不合格的(de)電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)。結構尺寸(cun)的(de)主要問題是護套(tao)厚(hou)度(du)，絕緣(yuan)厚(hou)度(du)，當電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)護套(tao)和絕緣(yuan)厚(hou)度(du)不達標(biao)時(shi)，致使電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)耐電(dian)(dian)(dian)(dian)(dian)氣強度(du)會嚴(yan)重(zhong)降低，導致電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)使用壽(shou)命縮短，嚴(yan)重(zhong)時(shi)可導致電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)被擊穿，絕緣(yuan)（護套(tao)）層起不到(dao)正常保護作用，從而發(fa)生電(dian)(dian)(dian)(dian)(dian)氣短路和火災等現象(xiang)。

3、護套(tao)式絕(jue)(jue)緣老化(hua)前(qian)的(de)(de)抗(kang)張強度(du)、伸長率合(he)格的(de)(de)電(dian)線(xian)電(dian)纜(lan)(lan)。絕(jue)(jue)緣護套(tao)老化(hua)前(qian)的(de)(de)抗(kang)張強度(du)、伸長率不合(he)格直接大(da)大(da)縮短電(dian)線(xian)電(dian)纜(lan)(lan)的(de)(de)工(gong)作用壽命，而且在(zai)施工(gong)或在(zai)長時間通(tong)電(dian)且溫度(du)較高(gao)的(de)(de)環境中，極易出現絕(jue)(jue)緣體斷裂(lie)，致使帶電(dian)導體裸露(lu)，發生(sheng)(sheng)能觸電(dian)式短路(lu)危險(xian)。其不合(he)格的(de)(de)主要原因是使用了再生(sheng)(sheng)料(liao)生(sheng)(sheng)產，以降低產品成本，二(er)是不具備生(sheng)(sheng)產資(zi)格小型(xing)企業(ye)。

4、導(dao)(dao)體電(dian)(dian)(dian)阻(zu)(zu)不合(he)格的(de)(de)(de)電(dian)(dian)(dian)線(xian)。導(dao)(dao)體電(dian)(dian)(dian)阻(zu)(zu)主(zhu)要(yao)是考核電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜的(de)(de)(de)導(dao)(dao)體材料以及(ji)截面(mian)是否符合(he)的(de)(de)(de)重(zhong)要(yao)指標。當(dang)導(dao)(dao)體電(dian)(dian)(dian)阻(zu)(zu)超標時，就增大了(le)電(dian)(dian)(dian)流在(zai)線(xian)路上通過(guo)時的(de)(de)(de)損耗，加(jia)劇了(le)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜的(de)(de)(de)發(fa)熱。導(dao)(dao)體電(dian)(dian)(dian)阻(zu)(zu)不合(he)格的(de)(de)(de)原因，主(zhu)要(yao)進企業為了(le)降低(di)成本(ben)，將占原材料成本(ben)80%的(de)(de)(de)銅材縮水，要(yao)么降低(di)導(dao)(dao)體的(de)(de)(de)截面(mian)積(ji)，要(yao)么使(shi)用(yong)含雜質過(guo)高的(de)(de)(de)再生銅，這樣致使(shi)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜的(de)(de)(de)導(dao)(dao)體電(dian)(dian)(dian)阻(zu)(zu)嚴重(zhong)超標，在(zai)使(shi)用(yong)過(guo)程中除易引發(fa)火災(zai)，還會加(jia)速包覆在(zai)電(dian)(dian)(dian)線(xian)外的(de)(de)(de)絕緣層的(de)(de)(de)老化。

在購買電線電纜(lan)的過程(cheng)中，消費者應注(zhu)意(yi)以下幾個事

第一、要觀察電線的(de)外觀。合格產品的(de)絕緣（護套）層柔軟、有(you)韌性(xing)和伸(shen)縮性(xing)、表面層緊密、光滑、無粗糙感(gan)。如果包裹電線的(de)塑(su)料很容易被剝去，則存在(zai)塑(su)料強(qiang)度不夠的(de)問題。

第二、要看(kan)電線的(de)截面(mian)(mian)。合(he)格產品的(de)銅芯或鋁(lv)芯表(biao)面(mian)(mian)應該具有金屬(shu)光(guang)澤，表(biao)面(mian)(mian)發(fa)黑的(de)銅或表(biao)面(mian)(mian)發(fa)白的(de)鋁(lv)說明(ming)已被(bei)氧化。

第(di)三、在購(gou)買(mai)電線(xian)時應注意(yi)查看質量合格(ge)(ge)證書。如果(guo)電線(xian)的質量合格(ge)(ge)，那(nei)么其電線(xian)質量應該也受(shou)過(guo)檢驗，不會(hui)有太(tai)大(da)的問題。

沈(shen)陽(yang)凱鵬電線(xian)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)制(zhi)(zhi)造有限公(gong)(gong)司隸屬凱鵬集團下屬子公(gong)(gong)司，專門從事電線(xian)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)研發(fa)、生(sheng)產制(zhi)(zhi)造，是(shi)全國頗具實力(li)的沈(shen)陽(yang)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)廠家(jia)，主(zhu)營產品：電力(li)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)、控(kong)制(zhi)(zhi)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)、橡套電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)、電氣裝備用電線(xian)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)、電子計算機電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)、BTTZ電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)、YTTW電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)等，以及(ji)(ji)電線(xian)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)代加(jia)工。小編每天會(hui)在公(gong)(gong)司官(guan)網發(fa)布電線(xian)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)價格表，及(ji)(ji)時更新銅(tong)價以及(ji)(ji)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)廠報(bao)價信(xin)息。更多有關(guan)電線(xian)電纜(lan)(lan)(lan)(lan)(lan)(lan)(lan)信(xin)息可(ke)點擊公(gong)(gong)司官(guan)網szbowen.cn