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不合格電線電纜的(de)危害(hai)

電線電纜是(shi)用于傳輸電力、傳輸信息和實現(xian)電磁能量轉換的(de)一(yi)大(da)類電工產品(pin)。在抽查過程(cheng)中，發(fa)現(xian)了大(da)量的(de)不合(he)格產品(pin)，這些(xie)劣質產品(pin)給(gei)電力系統正常運行埋下諸(zhu)多隱(yin)患。

1、標(biao)志(zhi)不(bu)合格(ge)(ge)的(de)電(dian)線電(dian)纜。標(biao)志(zhi)是(shi)電(dian)線電(dian)纜使用(yong)識別(bie)產(chan)品(pin)基本信息的(de)主要(yao)途徑，根據(ju)標(biao)準規定標(biao)志(zhi)的(de)主要(yao)內容是(shi)：產(chan)品(pin)型號、規格(ge)(ge)、標(biao)準號、廠(chang)名、產(chan)地(di)等在一定的(de)標(biao)示間距內，當標(biao)志(zhi)不(bu)合格(ge)(ge)時，會造成施工人員識別(bie)錯誤，嚴重時會引發電(dian)氣事故。

2、結構(gou)(gou)尺寸不(bu)合格的(de)電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)。結構(gou)(gou)尺寸的(de)主要問題是護(hu)套厚度(du)，絕緣(yuan)厚度(du)，當(dang)電(dian)(dian)(dian)纜(lan)的(de)護(hu)套和(he)(he)絕緣(yuan)厚度(du)不(bu)達(da)標時，致使電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)耐電(dian)(dian)(dian)氣(qi)強(qiang)度(du)會嚴(yan)重降低，導致電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)的(de)使用(yong)壽命縮短，嚴(yan)重時可導致電(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)纜(lan)被擊穿，絕緣(yuan)（護(hu)套）層(ceng)起不(bu)到正常保護(hu)作用(yong)，從(cong)而發生(sheng)電(dian)(dian)(dian)氣(qi)短路和(he)(he)火災等現象。

3、護套(tao)式絕緣老(lao)化(hua)前的抗(kang)張強(qiang)度(du)、伸長率(lv)合格(ge)(ge)的電(dian)(dian)線(xian)電(dian)(dian)纜。絕緣護套(tao)老(lao)化(hua)前的抗(kang)張強(qiang)度(du)、伸長率(lv)不合格(ge)(ge)直(zhi)接大(da)大(da)縮短電(dian)(dian)線(xian)電(dian)(dian)纜的工作用(yong)壽命，而(er)且在施工或在長時間通電(dian)(dian)且溫度(du)較高的環境中，極易出(chu)現絕緣體(ti)斷(duan)裂，致使(shi)帶電(dian)(dian)導(dao)體(ti)裸露，發生(sheng)能觸電(dian)(dian)式短路危(wei)險。其不合格(ge)(ge)的主要原因是(shi)使(shi)用(yong)了再生(sheng)料生(sheng)產(chan)，以降低產(chan)品(pin)成本，二是(shi)不具備生(sheng)產(chan)資格(ge)(ge)小型企業。

4、導體(ti)(ti)電(dian)(dian)(dian)阻不合(he)格的電(dian)(dian)(dian)線(xian)。導體(ti)(ti)電(dian)(dian)(dian)阻主要是(shi)考核電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)的導體(ti)(ti)材(cai)料(liao)以及(ji)截面(mian)是(shi)否符合(he)的重要指標(biao)。當導體(ti)(ti)電(dian)(dian)(dian)阻超標(biao)時，就增大了(le)(le)電(dian)(dian)(dian)流在線(xian)路(lu)上通過(guo)時的損耗，加劇了(le)(le)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)的發熱(re)。導體(ti)(ti)電(dian)(dian)(dian)阻不合(he)格的原因，主要進企(qi)業為了(le)(le)降低成(cheng)本，將占原材(cai)料(liao)成(cheng)本80%的銅(tong)材(cai)縮水，要么降低導體(ti)(ti)的截面(mian)積，要么使(shi)用含雜質過(guo)高的再生銅(tong)，這樣致使(shi)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)的導體(ti)(ti)電(dian)(dian)(dian)阻嚴重超標(biao)，在使(shi)用過(guo)程中(zhong)除易引(yin)發火災，還(huan)會加速包覆在電(dian)(dian)(dian)線(xian)外的絕緣層的老(lao)化。

在購(gou)買(mai)電(dian)線(xian)電(dian)纜的過程中，消費者應(ying)注意以下幾個事(shi)

第一、要觀察電線(xian)的(de)外觀。合格(ge)產品的(de)絕緣(yuan)（護套）層柔軟(ruan)、有韌性(xing)和伸縮性(xing)、表面層緊密、光(guang)滑、無粗(cu)糙感。如(ru)果(guo)包裹電線(xian)的(de)塑(su)(su)料很容易被剝去，則存(cun)在塑(su)(su)料強度不夠的(de)問題。

第二、要看(kan)電(dian)線(xian)的(de)截面(mian)。合格產品的(de)銅芯或鋁芯表面(mian)應該具有金屬光澤，表面(mian)發黑的(de)銅或表面(mian)發白的(de)鋁說明已被氧化。

第三、在購買(mai)電線(xian)時應注意查看質量合(he)格(ge)(ge)證書。如果電線(xian)的質量合(he)格(ge)(ge)，那么其(qi)電線(xian)質量應該也受過檢驗，不會有太大的問題(ti)。

沈(shen)陽凱鵬(peng)電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)(lan)制造有(you)限公(gong)司(si)隸屬凱鵬(peng)集(ji)團下屬子公(gong)司(si)，專(zhuan)門從(cong)事(shi)電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)(lan)研發(fa)、生(sheng)產制造，是全國頗具實力的(de)沈(shen)陽電(dian)(dian)(dian)(dian)纜(lan)(lan)廠家(jia)，主營產品：電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)纜(lan)(lan)、控(kong)制電(dian)(dian)(dian)(dian)纜(lan)(lan)、橡套電(dian)(dian)(dian)(dian)纜(lan)(lan)、電(dian)(dian)(dian)(dian)氣裝備用電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)(lan)、電(dian)(dian)(dian)(dian)子計算機電(dian)(dian)(dian)(dian)纜(lan)(lan)、BTTZ電(dian)(dian)(dian)(dian)纜(lan)(lan)、YTTW電(dian)(dian)(dian)(dian)纜(lan)(lan)等，以(yi)(yi)及(ji)電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)(lan)代加工。小編每天會在公(gong)司(si)官網發(fa)布電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)(lan)價格表，及(ji)時(shi)更新銅價以(yi)(yi)及(ji)電(dian)(dian)(dian)(dian)纜(lan)(lan)廠報價信(xin)息。更多有(you)關電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)(lan)信(xin)息可點(dian)擊(ji)公(gong)司(si)官網szbowen.cn