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)合格(ge)電線電纜的危害

電(dian)線電(dian)纜是用于傳輸電(dian)力、傳輸信息和實現(xian)電(dian)磁能量轉換的一(yi)大類電(dian)工產(chan)(chan)品(pin)。在抽查過程(cheng)中，發現(xian)了大量的不合格(ge)產(chan)(chan)品(pin)，這些劣質產(chan)(chan)品(pin)給(gei)電(dian)力系統(tong)正常運行(xing)埋下諸(zhu)多隱患。

1、標志(zhi)不合格的電(dian)線(xian)電(dian)纜(lan)。標志(zhi)是(shi)電(dian)線(xian)電(dian)纜(lan)使用識(shi)(shi)別(bie)產(chan)品基本信(xin)息的主要途徑(jing)，根據標準(zhun)規(gui)定標志(zhi)的主要內容是(shi)：產(chan)品型號、規(gui)格、標準(zhun)號、廠名、產(chan)地(di)等在一定的標示間距內，當標志(zhi)不合格時(shi)(shi)，會造(zao)成施(shi)工人員(yuan)識(shi)(shi)別(bie)錯(cuo)誤，嚴重(zhong)時(shi)(shi)會引發電(dian)氣事故。

2、結構尺寸(cun)不合格的電(dian)(dian)線(xian)電(dian)(dian)纜(lan)。結構尺寸(cun)的主要問(wen)題是(shi)護套(tao)厚(hou)度(du)，絕(jue)緣(yuan)厚(hou)度(du)，當(dang)電(dian)(dian)纜(lan)的護套(tao)和絕(jue)緣(yuan)厚(hou)度(du)不達標時(shi)，致使(shi)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)耐電(dian)(dian)氣(qi)強度(du)會(hui)嚴(yan)重降低，導致電(dian)(dian)線(xian)電(dian)(dian)纜(lan)的使(shi)用(yong)(yong)壽命縮短，嚴(yan)重時(shi)可導致電(dian)(dian)線(xian)電(dian)(dian)纜(lan)被(bei)擊(ji)穿(chuan)，絕(jue)緣(yuan)（護套(tao)）層起(qi)不到正常(chang)保護作用(yong)(yong)，從而發(fa)生電(dian)(dian)氣(qi)短路和火災等現象(xiang)。

3、護套式絕(jue)緣(yuan)老化前的抗張強(qiang)度(du)、伸長率合(he)格(ge)的電(dian)線電(dian)纜(lan)(lan)。絕(jue)緣(yuan)護套老化前的抗張強(qiang)度(du)、伸長率不合(he)格(ge)直接(jie)大(da)大(da)縮短電(dian)線電(dian)纜(lan)(lan)的工(gong)作用壽命，而且在施(shi)工(gong)或在長時間(jian)通電(dian)且溫度(du)較高的環境中，極易出現(xian)絕(jue)緣(yuan)體斷裂，致使帶電(dian)導體裸露，發生(sheng)(sheng)(sheng)能觸電(dian)式短路危(wei)險。其(qi)不合(he)格(ge)的主要原因是(shi)使用了再生(sheng)(sheng)(sheng)料生(sheng)(sheng)(sheng)產，以降低產品成本，二是(shi)不具備(bei)生(sheng)(sheng)(sheng)產資格(ge)小(xiao)型企業。

4、導(dao)體(ti)電(dian)(dian)(dian)阻不(bu)合(he)(he)格的(de)(de)(de)電(dian)(dian)(dian)線(xian)。導(dao)體(ti)電(dian)(dian)(dian)阻主要(yao)是考(kao)核電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)(de)(de)導(dao)體(ti)材(cai)料以(yi)及截面是否符(fu)合(he)(he)的(de)(de)(de)重(zhong)要(yao)指標。當導(dao)體(ti)電(dian)(dian)(dian)阻超標時(shi)，就(jiu)增(zeng)大了電(dian)(dian)(dian)流(liu)在線(xian)路上通過(guo)時(shi)的(de)(de)(de)損耗，加劇了電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)(de)(de)發熱。導(dao)體(ti)電(dian)(dian)(dian)阻不(bu)合(he)(he)格的(de)(de)(de)原(yuan)(yuan)因(yin)，主要(yao)進企業(ye)為(wei)了降低成本，將占原(yuan)(yuan)材(cai)料成本80%的(de)(de)(de)銅(tong)材(cai)縮(suo)水，要(yao)么(me)降低導(dao)體(ti)的(de)(de)(de)截面積，要(yao)么(me)使(shi)用(yong)含雜質過(guo)高(gao)的(de)(de)(de)再生(sheng)銅(tong)，這樣致(zhi)使(shi)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)(de)(de)導(dao)體(ti)電(dian)(dian)(dian)阻嚴(yan)重(zhong)超標，在使(shi)用(yong)過(guo)程(cheng)中除易引(yin)發火(huo)災，還會(hui)加速包覆(fu)在電(dian)(dian)(dian)線(xian)外的(de)(de)(de)絕緣層的(de)(de)(de)老化。

在購買電線電纜的過程中，消費者應注意以下幾個事

第一、要觀(guan)察電線的(de)外觀(guan)。合格產品的(de)絕緣（護套）層柔軟、有韌性和伸(shen)縮(suo)性、表面層緊(jin)密(mi)、光滑、無粗(cu)糙感(gan)。如果(guo)包裹(guo)電線的(de)塑料(liao)很容(rong)易被(bei)剝去，則存(cun)在塑料(liao)強度(du)不(bu)夠的(de)問(wen)題(ti)。

第二、要看電線的(de)截面。合(he)格產品(pin)的(de)銅(tong)芯(xin)或鋁芯(xin)表(biao)(biao)面應該具有金屬(shu)光澤，表(biao)(biao)面發黑的(de)銅(tong)或表(biao)(biao)面發白的(de)鋁說明已被氧(yang)化(hua)。

第三、在購買電(dian)線(xian)時應注意查看(kan)質(zhi)量(liang)合格(ge)(ge)證書。如果電(dian)線(xian)的質(zhi)量(liang)合格(ge)(ge)，那(nei)么其電(dian)線(xian)質(zhi)量(liang)應該也受過(guo)檢驗，不會有太大的問(wen)題(ti)。

沈(shen)陽(yang)凱(kai)鵬(peng)(peng)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜制(zhi)造有(you)限公(gong)(gong)司(si)隸屬凱(kai)鵬(peng)(peng)集團下屬子(zi)公(gong)(gong)司(si)，專門從事電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜研發、生產制(zhi)造，是全國(guo)頗具(ju)實(shi)力的沈(shen)陽(yang)電(dian)(dian)(dian)(dian)(dian)(dian)纜廠家(jia)，主營產品：電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)纜、控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)纜、橡(xiang)套電(dian)(dian)(dian)(dian)(dian)(dian)纜、電(dian)(dian)(dian)(dian)(dian)(dian)氣裝備(bei)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜、電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)計算(suan)機電(dian)(dian)(dian)(dian)(dian)(dian)纜、BTTZ電(dian)(dian)(dian)(dian)(dian)(dian)纜、YTTW電(dian)(dian)(dian)(dian)(dian)(dian)纜等(deng)，以及電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜代(dai)加(jia)工。小編(bian)每(mei)天會(hui)在公(gong)(gong)司(si)官網發布電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜價格表(biao)，及時(shi)更新銅價以及電(dian)(dian)(dian)(dian)(dian)(dian)纜廠報價信息。更多有(you)關電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)纜信息可點擊公(gong)(gong)司(si)官網szbowen.cn