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(dian)線電(dian)纜(lan)的(de)危(wei)害

電線電纜(lan)是用于(yu)傳(chuan)輸電力、傳(chuan)輸信息和實現電磁能量轉(zhuan)換的一大類電工產品(pin)。在抽查過程中，發現了(le)大量的不合格產品(pin)，這些劣質產品(pin)給(gei)電力系(xi)統正常運行(xing)埋下諸多(duo)隱患。

1、標志不合格的電線電纜。標志是電線電纜使(shi)用識別產(chan)(chan)品(pin)基(ji)本信(xin)息的主(zhu)要途徑，根(gen)據(ju)標準(zhun)規定標志的主(zhu)要內(nei)容是：產(chan)(chan)品(pin)型號、規格、標準(zhun)號、廠(chang)名、產(chan)(chan)地等(deng)在一定的標示間(jian)距(ju)內(nei)，當標志不合格時(shi)，會造成施工人員識別錯誤，嚴重時(shi)會引發電氣事故。

2、結構(gou)尺(chi)(chi)寸不(bu)(bu)合格的(de)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)。結構(gou)尺(chi)(chi)寸的(de)主要(yao)問題是護(hu)套厚(hou)(hou)度，絕(jue)(jue)緣厚(hou)(hou)度，當電(dian)(dian)(dian)纜(lan)的(de)護(hu)套和絕(jue)(jue)緣厚(hou)(hou)度不(bu)(bu)達標時(shi)，致使電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)耐電(dian)(dian)(dian)氣強度會(hui)嚴(yan)重降低，導(dao)(dao)致電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)使用(yong)(yong)壽命(ming)縮短，嚴(yan)重時(shi)可導(dao)(dao)致電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)被擊穿，絕(jue)(jue)緣（護(hu)套）層起不(bu)(bu)到(dao)正常保護(hu)作用(yong)(yong)，從而發(fa)生電(dian)(dian)(dian)氣短路和火災等(deng)現(xian)象。

3、護(hu)(hu)套(tao)式(shi)絕(jue)(jue)緣老(lao)化前(qian)的抗張(zhang)強度、伸長率合(he)(he)格的電(dian)線電(dian)纜(lan)(lan)。絕(jue)(jue)緣護(hu)(hu)套(tao)老(lao)化前(qian)的抗張(zhang)強度、伸長率不合(he)(he)格直接大大縮短(duan)電(dian)線電(dian)纜(lan)(lan)的工作(zuo)用壽命，而且在(zai)施工或在(zai)長時間通電(dian)且溫度較高的環境中，極易出現絕(jue)(jue)緣體(ti)斷(duan)裂，致使帶電(dian)導體(ti)裸露(lu)，發生(sheng)能觸電(dian)式(shi)短(duan)路危險。其不合(he)(he)格的主要原因是(shi)使用了再生(sheng)料生(sheng)產，以降低(di)產品成本(ben)，二是(shi)不具(ju)備生(sheng)產資(zi)格小型企業(ye)。

4、導體(ti)(ti)電(dian)(dian)阻(zu)不合格的(de)(de)(de)電(dian)(dian)線(xian)。導體(ti)(ti)電(dian)(dian)阻(zu)主要(yao)是考核電(dian)(dian)線(xian)電(dian)(dian)纜的(de)(de)(de)導體(ti)(ti)材(cai)料(liao)以及截面是否(fou)符合的(de)(de)(de)重(zhong)要(yao)指(zhi)標(biao)。當(dang)導體(ti)(ti)電(dian)(dian)阻(zu)超標(biao)時(shi)，就增大了(le)(le)電(dian)(dian)流在線(xian)路(lu)上通過時(shi)的(de)(de)(de)損耗，加(jia)劇了(le)(le)電(dian)(dian)線(xian)電(dian)(dian)纜的(de)(de)(de)發熱。導體(ti)(ti)電(dian)(dian)阻(zu)不合格的(de)(de)(de)原因，主要(yao)進(jin)企業為了(le)(le)降低(di)(di)成(cheng)本，將(jiang)占(zhan)原材(cai)料(liao)成(cheng)本80%的(de)(de)(de)銅(tong)(tong)材(cai)縮水，要(yao)么降低(di)(di)導體(ti)(ti)的(de)(de)(de)截面積，要(yao)么使(shi)用含雜質過高的(de)(de)(de)再生(sheng)銅(tong)(tong)，這樣(yang)致使(shi)電(dian)(dian)線(xian)電(dian)(dian)纜的(de)(de)(de)導體(ti)(ti)電(dian)(dian)阻(zu)嚴(yan)重(zhong)超標(biao)，在使(shi)用過程中除易引發火災，還會加(jia)速包覆在電(dian)(dian)線(xian)外的(de)(de)(de)絕緣(yuan)層的(de)(de)(de)老(lao)化(hua)。

在購買電線電纜的過程(cheng)中，消費者(zhe)應注意以下幾個事

第一(yi)、要觀(guan)察電線的外(wai)觀(guan)。合格產品的絕緣(yuan)（護套）層柔軟、有韌性和伸縮(suo)性、表面層緊密、光(guang)滑、無粗(cu)糙感。如果(guo)包裹電線的塑(su)料很容易被(bei)剝去，則存在塑(su)料強度(du)不夠的問題。

第(di)二、要看(kan)電(dian)線的(de)截面(mian)(mian)。合格產品的(de)銅(tong)(tong)芯或鋁芯表(biao)面(mian)(mian)應該(gai)具(ju)有金(jin)屬光澤，表(biao)面(mian)(mian)發(fa)黑的(de)銅(tong)(tong)或表(biao)面(mian)(mian)發(fa)白的(de)鋁說明已被氧(yang)化。

第三、在購買電線時應注意查看質(zhi)量合格證書。如果電線的(de)質(zhi)量合格，那么其電線質(zhi)量應該也受過檢驗，不會(hui)有太大的(de)問(wen)題。

沈陽(yang)凱(kai)鵬電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)制(zhi)造有限公司(si)隸屬(shu)凱(kai)鵬集團下屬(shu)子(zi)公司(si)，專門從(cong)事電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)研(yan)發、生產制(zhi)造，是全國頗具實力的沈陽(yang)電(dian)(dian)(dian)纜(lan)(lan)廠家，主營產品：電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)、控制(zhi)電(dian)(dian)(dian)纜(lan)(lan)、橡套(tao)電(dian)(dian)(dian)纜(lan)(lan)、電(dian)(dian)(dian)氣(qi)裝備(bei)用電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)、電(dian)(dian)(dian)子(zi)計算機電(dian)(dian)(dian)纜(lan)(lan)、BTTZ電(dian)(dian)(dian)纜(lan)(lan)、YTTW電(dian)(dian)(dian)纜(lan)(lan)等，以及電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)代加工。小編每(mei)天會在公司(si)官網(wang)發布電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)價(jia)格表(biao)，及時(shi)更新銅(tong)價(jia)以及電(dian)(dian)(dian)纜(lan)(lan)廠報(bao)價(jia)信息。更多有關電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)(lan)信息可點擊公司(si)官網(wang)szbowen.cn