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(bu)合(he)格電(dian)線電(dian)纜的危害(hai)

電線(xian)電纜是(shi)用(yong)于傳輸(shu)電力(li)、傳輸(shu)信息和實現(xian)電磁能量轉換(huan)的一(yi)大(da)(da)類電工(gong)產(chan)品(pin)。在抽查過程中，發現(xian)了大(da)(da)量的不合格產(chan)品(pin)，這(zhe)些劣(lie)質(zhi)產(chan)品(pin)給電力(li)系(xi)統(tong)正常運行埋(mai)下諸多(duo)隱(yin)患。

1、標(biao)志(zhi)不(bu)合格的(de)(de)(de)電線(xian)電纜。標(biao)志(zhi)是電線(xian)電纜使用(yong)識別產(chan)品(pin)基本信息(xi)的(de)(de)(de)主(zhu)要途徑(jing)，根據標(biao)準規定(ding)標(biao)志(zhi)的(de)(de)(de)主(zhu)要內容是：產(chan)品(pin)型號、規格、標(biao)準號、廠名、產(chan)地等在(zai)一(yi)定(ding)的(de)(de)(de)標(biao)示間距(ju)內，當標(biao)志(zhi)不(bu)合格時，會造成(cheng)施工(gong)人(ren)員識別錯誤，嚴重時會引發電氣事(shi)故。

2、結構尺寸(cun)(cun)不(bu)合(he)格的(de)(de)電(dian)(dian)(dian)線電(dian)(dian)(dian)纜。結構尺寸(cun)(cun)的(de)(de)主要(yao)問(wen)題是(shi)護(hu)(hu)套厚度(du)，絕緣厚度(du)，當電(dian)(dian)(dian)纜的(de)(de)護(hu)(hu)套和(he)絕緣厚度(du)不(bu)達標時，致使電(dian)(dian)(dian)線電(dian)(dian)(dian)纜耐電(dian)(dian)(dian)氣強度(du)會嚴重降低，導致電(dian)(dian)(dian)線電(dian)(dian)(dian)纜的(de)(de)使用壽命縮短，嚴重時可導致電(dian)(dian)(dian)線電(dian)(dian)(dian)纜被擊穿(chuan)，絕緣（護(hu)(hu)套）層(ceng)起不(bu)到正(zheng)常保護(hu)(hu)作用，從而發生(sheng)電(dian)(dian)(dian)氣短路(lu)和(he)火災(zai)等現象。

3、護套式(shi)絕(jue)緣(yuan)老化(hua)前的抗張強度、伸長率(lv)(lv)合格的電(dian)(dian)線(xian)電(dian)(dian)纜。絕(jue)緣(yuan)護套老化(hua)前的抗張強度、伸長率(lv)(lv)不合格直(zhi)接大(da)大(da)縮短電(dian)(dian)線(xian)電(dian)(dian)纜的工作用壽命(ming)，而且在施工或在長時(shi)間(jian)通電(dian)(dian)且溫度較(jiao)高的環境中，極易出現絕(jue)緣(yuan)體斷裂，致使帶電(dian)(dian)導體裸(luo)露，發生(sheng)能(neng)觸電(dian)(dian)式(shi)短路危(wei)險。其不合格的主要原(yuan)因是使用了(le)再(zai)生(sheng)料生(sheng)產(chan)，以(yi)降(jiang)低產(chan)品成本，二(er)是不具備生(sheng)產(chan)資格小型(xing)企業。

4、導(dao)(dao)體(ti)(ti)電(dian)阻(zu)不(bu)合格的(de)(de)(de)電(dian)線。導(dao)(dao)體(ti)(ti)電(dian)阻(zu)主要(yao)是考核電(dian)線電(dian)纜的(de)(de)(de)導(dao)(dao)體(ti)(ti)材料(liao)以及截(jie)面是否符(fu)合的(de)(de)(de)重要(yao)指標(biao)。當(dang)導(dao)(dao)體(ti)(ti)電(dian)阻(zu)超標(biao)時(shi)，就增大(da)了電(dian)流在(zai)線路(lu)上通過時(shi)的(de)(de)(de)損耗，加劇了電(dian)線電(dian)纜的(de)(de)(de)發熱。導(dao)(dao)體(ti)(ti)電(dian)阻(zu)不(bu)合格的(de)(de)(de)原因(yin)，主要(yao)進企(qi)業(ye)為了降低成本，將占原材料(liao)成本80%的(de)(de)(de)銅材縮水(shui)，要(yao)么(me)降低導(dao)(dao)體(ti)(ti)的(de)(de)(de)截(jie)面積，要(yao)么(me)使用含雜質過高的(de)(de)(de)再生銅，這樣致使電(dian)線電(dian)纜的(de)(de)(de)導(dao)(dao)體(ti)(ti)電(dian)阻(zu)嚴(yan)重超標(biao)，在(zai)使用過程中除易引發火災，還(huan)會(hui)加速(su)包覆(fu)在(zai)電(dian)線外的(de)(de)(de)絕緣層的(de)(de)(de)老化。

在購買電線(xian)電纜的過程中，消費(fei)者應(ying)注意(yi)以(yi)下幾個事

第(di)一、要觀察電線的(de)外觀。合(he)格產品的(de)絕(jue)緣（護(hu)套）層柔軟、有韌(ren)性和伸縮(suo)性、表面(mian)層緊密、光滑、無粗糙感。如果包裹電線的(de)塑料很容易(yi)被剝去，則(ze)存(cun)在(zai)塑料強(qiang)度不夠的(de)問題。

第二(er)、要(yao)看電線的(de)截(jie)面。合格產品的(de)銅(tong)芯或(huo)鋁芯表(biao)面應該具有金(jin)屬光澤，表(biao)面發(fa)黑(hei)的(de)銅(tong)或(huo)表(biao)面發(fa)白(bai)的(de)鋁說(shuo)明已被氧化。

第(di)三、在購(gou)買電(dian)(dian)線(xian)時(shi)應注意查(cha)看質量(liang)合格證(zheng)書(shu)。如果電(dian)(dian)線(xian)的質量(liang)合格，那么其電(dian)(dian)線(xian)質量(liang)應該也受過檢驗，不會有太大的問(wen)題(ti)。

沈陽(yang)凱鵬(peng)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)制(zhi)造有限公(gong)司(si)隸(li)屬凱鵬(peng)集團下屬子(zi)公(gong)司(si)，專門從(cong)事(shi)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)研發(fa)、生產制(zhi)造，是全國頗具(ju)實力的沈陽(yang)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)廠家，主營產品：電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、控制(zhi)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、橡套電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、電(dian)(dian)(dian)(dian)(dian)氣裝備用電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、電(dian)(dian)(dian)(dian)(dian)子(zi)計算機電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、BTTZ電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、YTTW電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)等，以及電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)代加工。小編每天會在公(gong)司(si)官網(wang)發(fa)布(bu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)價格表，及時更新銅價以及電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)廠報價信(xin)息。更多有關電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)信(xin)息可點擊公(gong)司(si)官網(wang)szbowen.cn