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

不合格電線電纜的危害

電線電纜是用于傳輸(shu)電力、傳輸(shu)信息和實(shi)現電磁能量轉換的一大(da)類電工產(chan)品。在抽(chou)查過程中，發現了大(da)量的不合格產(chan)品，這些劣質產(chan)品給電力系統正常(chang)運(yun)行(xing)埋下諸多隱患。

1、標(biao)(biao)志(zhi)不合格的(de)(de)電線電纜(lan)。標(biao)(biao)志(zhi)是電線電纜(lan)使用識別(bie)(bie)產(chan)品(pin)基本信(xin)息的(de)(de)主(zhu)要途(tu)徑，根據標(biao)(biao)準規定(ding)(ding)標(biao)(biao)志(zhi)的(de)(de)主(zhu)要內容是：產(chan)品(pin)型號、規格、標(biao)(biao)準號、廠名、產(chan)地等在(zai)一定(ding)(ding)的(de)(de)標(biao)(biao)示間距內，當標(biao)(biao)志(zhi)不合格時，會造(zao)成施工人員識別(bie)(bie)錯誤，嚴重時會引(yin)發電氣(qi)事(shi)故(gu)。

2、結構尺(chi)寸不合格的電(dian)線(xian)電(dian)纜(lan)(lan)。結構尺(chi)寸的主要問(wen)題是護套(tao)厚(hou)度(du)(du)(du)，絕(jue)緣(yuan)(yuan)厚(hou)度(du)(du)(du)，當電(dian)纜(lan)(lan)的護套(tao)和絕(jue)緣(yuan)(yuan)厚(hou)度(du)(du)(du)不達(da)標(biao)時，致(zhi)使電(dian)線(xian)電(dian)纜(lan)(lan)耐電(dian)氣強(qiang)度(du)(du)(du)會嚴(yan)重降低，導致(zhi)電(dian)線(xian)電(dian)纜(lan)(lan)的使用(yong)壽(shou)命縮短(duan)，嚴(yan)重時可導致(zhi)電(dian)線(xian)電(dian)纜(lan)(lan)被擊穿(chuan)，絕(jue)緣(yuan)(yuan)（護套(tao)）層(ceng)起不到(dao)正常保護作用(yong)，從而(er)發(fa)生(sheng)電(dian)氣短(duan)路和火災(zai)等(deng)現象。

3、護套式(shi)絕緣(yuan)老化(hua)前的(de)(de)抗(kang)張強(qiang)度(du)、伸長率(lv)合格(ge)的(de)(de)電(dian)(dian)線電(dian)(dian)纜。絕緣(yuan)護套老化(hua)前的(de)(de)抗(kang)張強(qiang)度(du)、伸長率(lv)不合格(ge)直接大(da)大(da)縮短(duan)電(dian)(dian)線電(dian)(dian)纜的(de)(de)工作用(yong)壽命，而且(qie)在施(shi)工或(huo)在長時間通(tong)電(dian)(dian)且(qie)溫(wen)度(du)較高(gao)的(de)(de)環境中，極(ji)易出現絕緣(yuan)體斷裂(lie)，致使(shi)帶電(dian)(dian)導體裸露，發生能(neng)觸(chu)電(dian)(dian)式(shi)短(duan)路危險。其不合格(ge)的(de)(de)主要原因是使(shi)用(yong)了再生料生產(chan)，以降低產(chan)品成本(ben)，二是不具(ju)備生產(chan)資格(ge)小型企業(ye)。

4、導(dao)體(ti)(ti)(ti)電(dian)(dian)(dian)阻(zu)(zu)(zu)不合(he)格(ge)的(de)(de)(de)電(dian)(dian)(dian)線(xian)。導(dao)體(ti)(ti)(ti)電(dian)(dian)(dian)阻(zu)(zu)(zu)主要是考核電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)(de)(de)導(dao)體(ti)(ti)(ti)材(cai)料以(yi)及截面(mian)(mian)是否(fou)符(fu)合(he)的(de)(de)(de)重要指標。當導(dao)體(ti)(ti)(ti)電(dian)(dian)(dian)阻(zu)(zu)(zu)超標時，就(jiu)增(zeng)大了電(dian)(dian)(dian)流在線(xian)路上通過(guo)時的(de)(de)(de)損耗，加(jia)(jia)劇了電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)(de)(de)發熱。導(dao)體(ti)(ti)(ti)電(dian)(dian)(dian)阻(zu)(zu)(zu)不合(he)格(ge)的(de)(de)(de)原(yuan)因，主要進企(qi)業(ye)為了降(jiang)低(di)(di)成(cheng)本，將占原(yuan)材(cai)料成(cheng)本80%的(de)(de)(de)銅材(cai)縮水，要么(me)降(jiang)低(di)(di)導(dao)體(ti)(ti)(ti)的(de)(de)(de)截面(mian)(mian)積，要么(me)使用含雜(za)質過(guo)高的(de)(de)(de)再生(sheng)銅，這樣(yang)致使電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)(de)(de)導(dao)體(ti)(ti)(ti)電(dian)(dian)(dian)阻(zu)(zu)(zu)嚴重超標，在使用過(guo)程中除易引發火災，還(huan)會加(jia)(jia)速包覆在電(dian)(dian)(dian)線(xian)外的(de)(de)(de)絕緣層的(de)(de)(de)老(lao)化。

在(zai)購(gou)買電(dian)線(xian)電(dian)纜的(de)過程中(zhong)，消費者應注意以下(xia)幾(ji)個事

第一(yi)、要觀察電線(xian)(xian)的(de)外觀。合(he)格(ge)產品的(de)絕緣(yuan)（護套）層(ceng)柔軟、有韌性(xing)和伸縮性(xing)、表面層(ceng)緊密(mi)、光滑、無粗糙感。如(ru)果包裹電線(xian)(xian)的(de)塑料很容(rong)易被剝(bo)去，則存在塑料強度不夠的(de)問(wen)題(ti)。

第二、要看電線的(de)截面(mian)(mian)。合格產(chan)品的(de)銅芯(xin)或(huo)(huo)鋁(lv)芯(xin)表面(mian)(mian)應該具(ju)有(you)金屬光(guang)澤(ze)，表面(mian)(mian)發黑(hei)的(de)銅或(huo)(huo)表面(mian)(mian)發白的(de)鋁(lv)說明已(yi)被氧化。

第三、在購買(mai)電線(xian)時應(ying)注意查(cha)看質(zhi)量(liang)合(he)格(ge)證書(shu)。如果(guo)電線(xian)的(de)質(zhi)量(liang)合(he)格(ge)，那(nei)么(me)其電線(xian)質(zhi)量(liang)應(ying)該也受過(guo)檢驗(yan)，不會有(you)太大的(de)問(wen)題。

沈陽(yang)凱鵬(peng)電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)(lan)制造有限(xian)公(gong)司(si)隸屬凱鵬(peng)集團下屬子公(gong)司(si)，專門從事(shi)電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)(lan)研發、生產制造，是全國(guo)頗具實力的(de)沈陽(yang)電(dian)(dian)(dian)纜(lan)(lan)(lan)廠家，主營(ying)產品：電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)、控制電(dian)(dian)(dian)纜(lan)(lan)(lan)、橡(xiang)套電(dian)(dian)(dian)纜(lan)(lan)(lan)、電(dian)(dian)(dian)氣裝備用電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)(lan)、電(dian)(dian)(dian)子計算機電(dian)(dian)(dian)纜(lan)(lan)(lan)、BTTZ電(dian)(dian)(dian)纜(lan)(lan)(lan)、YTTW電(dian)(dian)(dian)纜(lan)(lan)(lan)等，以(yi)及電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)(lan)代加工。小編(bian)每天會(hui)在(zai)公(gong)司(si)官網(wang)發布(bu)電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)(lan)價格表，及時(shi)更(geng)新銅(tong)價以(yi)及電(dian)(dian)(dian)纜(lan)(lan)(lan)廠報(bao)價信(xin)(xin)息。更(geng)多有關電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)(lan)信(xin)(xin)息可點(dian)擊公(gong)司(si)官網(wang)szbowen.cn