哪些因(yin)素會影響電纜的絕緣電阻?
作者: 發布時(shi)間:2023-06-05
電(dian)(dian)纜生(sheng)產(chan)中經常會(hui)遇到絕(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)較(jiao)小的(de)(de)(de)現象(xiang),并且(qie)有很(hen)多因(yin)素會(hui)影(ying)響(xiang)(xiang)(xiang)電(dian)(dian)纜的(de)(de)(de)絕(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)。今(jin)天(tian)小編(bian)就帶大家一起(qi)來(lai)了解下相(xiang)關(guan)因(yin)素。1.溫(wen)度(du)(du)(du)的(de)(de)(de)影(ying)響(xiang)(xiang)(xiang)“隨(sui)著溫(wen)度(du)(du)(du)升高(gao),絕(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)率(lv)(lv)降(jiang)低(di)(di)。這是(shi)由(you)(you)(you)于(yu)熱運動的(de)(de)(de)增加(jia)以及離子(zi)(zi)的(de)(de)(de)產(chan)生(sheng)和遷移(yi)(yi)(yi)的(de)(de)(de)增加(jia)。在電(dian)(dian)壓(ya)的(de)(de)(de)作用下,由(you)(you)(you)離子(zi)(zi)運動形成的(de)(de)(de)傳導電(dian)(dian)流增加(jia)而絕(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)降(jiang)低(di)(di)。2.電(dian)(dian)場(chang)(chang)強(qiang)度(du)(du)(du)的(de)(de)(de)影(ying)響(xiang)(xiang)(xiang):當電(dian)(dian)場(chang)(chang)強(qiang)度(du)(du)(du)在相(xiang)對較(jiao)低(di)(di)的(de)(de)(de)范圍內(nei)時(shi),離子(zi)(zi)的(de)(de)(de)遷移(yi)(yi)(yi)率(lv)(lv)與電(dian)(dian)場(chang)(chang)強(qiang)度(du)(du)(du)的(de)(de)(de)增加(jia)成比例關(guan)系(xi)地增加(jia)。離子(zi)(zi)電(dian)(dian)流和電(dian)(dian)場(chang)(chang)強(qiang)度(du)(du)(du)遵循歐姆定律。當電(dian)(dian)場(chang)(chang)強(qiang)度(du)(du)(du)相(xiang)對較(jiao)高(gao)時(shi),隨(sui)著電(dian)(dian)場(chang)(chang)強(qiang)度(du)(du)(du)的(de)(de)(de)增加(jia),離子(zi)(zi)的(de)(de)(de)遷移(yi)(yi)(yi)率(lv)(lv)逐漸從線(xian)性關(guan)系(xi)變為(wei)指數(shu)關(guan)系(xi)。當電(dian)(dian)場(chang)(chang)強(qiang)度(du)(du)(du)接近擊穿時(shi),將發生(sheng)大量的(de)(de)(de)電(dian)(dian)子(zi)(zi)遷移(yi)(yi)(yi),并且(qie)絕(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)率(lv)(lv)將大大降(jiang)低(di)(di)。3.濕度(du)(du)(du)的(de)(de)(de)影(ying)響(xiang)(xiang)(xiang):由(you)(you)(you)于(yu)水的(de)(de)(de)電(dian)(dian)導率(lv)(lv)大,因(yin)此水分子(zi)(zi)的(de)(de)(de)尺寸(cun)...
怎么保管和運輸電(dian)線(xian)電(dian)纜呢?
作者: 發布時間(jian):2023-06-05
眾所(suo)周知(zhi),電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)是我們賴以(yi)生(sheng)活的(de)電(dian)(dian)(dian)力支持,電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)敷設我們更應該謹(jin)慎嚴行。電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)出(chu)現故障(zhang),造成的(de)麻(ma)煩是巨(ju)大(da),同(tong)時(shi)在一定(ding)程度上(shang)造成的(de)經濟損失也是巨(ju)大(da)。所(suo)以(yi)在電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)運輸(shu)和保管(guan)(guan)中(zhong)更應該確保安(an)全(quan)。那么電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)運輸(shu)和保管(guan)(guan)有哪些(xie)注意(yi)事項呢今(jin)天小編就來(lai)給大(da)家(jia)詳細介紹(shao)下。1.運輸(shu)中(zhong)嚴禁(jin)從高處扔下電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)或裝有電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)盤(pan),特別是在較(jiao)低(di)溫度時(shi)(一般為(wei)5℃左(zuo)右(you)及以(yi)下),扔、摔電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)將有可(ke)能(neng)導致絕緣(yuan)、護套開(kai)裂。2.盡(jin)可(ke)能(neng)避(bi)免在露(lu)天以(yi)裸露(lu)方式存放電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan),電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)盤(pan)不允許平放。3.吊裝包(bao)裝件時(shi),嚴禁(jin)幾盤(pan)同(tong)時(shi)吊裝。在車輛、船舶等運輸(shu)工具上(shang),電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)盤(pan)要用(yong)合適(shi)方法加以(yi)固定(ding),防止(zhi)互相碰撞或翻倒,宜以(yi)防止(zhi)機械損傷電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)。4.電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)嚴禁(jin)...
電纜和(he)電線有啥(sha)區別(bie)?
作者: 發布時間:2023-05-19
電(dian)(dian)(dian)纜(lan)(lan)(lan)和電(dian)(dian)(dian)線(xian)(xian)有啥區(qu)別(bie)?1---材料的區(qu)別(bie)電(dian)(dian)(dian)線(xian)(xian)用(yong)(yong)于(yu)承(cheng)載電(dian)(dian)(dian)流的導(dao)電(dian)(dian)(dian)金(jin)屬線(xian)(xian)材。有實心的﹑絞(jiao)合(he)的或(huo)箔片編織的等各種形式(shi)。按絕(jue)緣(yuan)狀況(kuang)分(fen)(fen)為(wei)裸電(dian)(dian)(dian)線(xian)(xian)和絕(jue)緣(yuan)電(dian)(dian)(dian)線(xian)(xian)兩(liang)大類。電(dian)(dian)(dian)纜(lan)(lan)(lan)由一根或(huo)多根相互絕(jue)緣(yuan)的導(dao)電(dian)(dian)(dian)線(xian)(xian)心置(zhi)于(yu)密封護(hu)套中構(gou)成的絕(jue)緣(yuan)導(dao)線(xian)(xian)。其(qi)外(wai)可(ke)加(jia)保(bao)護(hu)覆蓋層(ceng),電(dian)(dian)(dian)線(xian)(xian)與電(dian)(dian)(dian)纜(lan)(lan)(lan)的區(qu)別(bie)在于(yu)電(dian)(dian)(dian)線(xian)(xian)的尺寸一般較小、結構(gou)較為(wei)簡(jian)單(dan),但有時也(ye)將電(dian)(dian)(dian)纜(lan)(lan)(lan)歸(gui)入廣義的電(dian)(dian)(dian)線(xian)(xian)之(zhi)列。2---用(yong)(yong)途的區(qu)別(bie)裸電(dian)(dian)(dian)線(xian)(xian)不包任何絕(jue)緣(yuan)或(huo)保(bao)護(hu)層(ceng)的電(dian)(dian)(dian)線(xian)(xian)。除(chu)作(zuo)為(wei)傳(chuan)(chuan)輸電(dian)(dian)(dian)能和信(xin)息的導(dao)線(xian)(xian)外(wai),還可(ke)用(yong)(yong)于(yu)制造電(dian)(dian)(dian)機﹑電(dian)(dian)(dian)器的構(gou)件(jian)和連接(jie)線(xian)(xian)。一般用(yong)(yong)銅(tong)、鋁、銅(tong)合(he)金(jin)、鋁合(he)金(jin)。此外(wai),還有各種適用(yong)(yong)于(yu)特(te)種要求的絕(jue)緣(yuan)電(dian)(dian)(dian)線(xian)(xian),如汽車(che)用(yong)(yong)低(di)壓電(dian)(dian)(dian)線(xian)(xian)、汽車(che)用(yong)(yong)高(gao)壓點火(huo)線(xian)(xian)、電(dian)(dian)(dian)機電(dian)(dian)(dian)器引接(jie)線(xian)(xian)、航(hang)空(kong)導(dao)線(xian)(xian)、補償(chang)導(dao)線(xian)(xian)等。電(dian)(dian)(dian)纜(lan)(lan)(lan)用(yong)(yong)于(yu)傳(chuan)(chuan)輸、分(fen)(fen)...