什么是屏(ping)蔽(bi)電纜(屏(ping)蔽(bi)線)
作者: 發布(bu)時(shi)間:2023-03-30
什么是(shi)屏(ping)(ping)蔽(bi)(bi)(bi)(bi)線(xian)(xian)(xian)(xian)?導線(xian)(xian)(xian)(xian)外(wai)(wai)(wai)部有(you)導體(ti)包裹(guo)的(de)(de)(de)導線(xian)(xian)(xian)(xian)叫(jiao)“屏(ping)(ping)蔽(bi)(bi)(bi)(bi)線(xian)(xian)(xian)(xian)”屏(ping)(ping)蔽(bi)(bi)(bi)(bi)線(xian)(xian)(xian)(xian)是(shi)使(shi)用(yong)金(jin)屬(shu)網狀編(bian)織(zhi)層(ceng)(ceng)把信(xin)號(hao)線(xian)(xian)(xian)(xian)包裹(guo)起(qi)來的(de)(de)(de)傳輸線(xian)(xian)(xian)(xian),包裹(guo)的(de)(de)(de)導體(ti)叫(jiao)屏(ping)(ping)蔽(bi)(bi)(bi)(bi)層(ceng)(ceng),一般為(wei)編(bian)織(zhi)銅網或銅泊(bo)(鋁),屏(ping)(ping)蔽(bi)(bi)(bi)(bi)層(ceng)(ceng)需要接(jie)(jie)地,外(wai)(wai)(wai)來的(de)(de)(de)干(gan)擾(rao)信(xin)號(hao)可被該(gai)層(ceng)(ceng)導入大地。屏(ping)(ping)蔽(bi)(bi)(bi)(bi)線(xian)(xian)(xian)(xian)是(shi)為(wei)減(jian)少外(wai)(wai)(wai)電(dian)磁(ci)(ci)場(chang)對(dui)電(dian)源或通信(xin)線(xian)(xian)(xian)(xian)路(lu)(lu)的(de)(de)(de)影(ying)響(xiang)而(er)專門采用(yong)的(de)(de)(de)一種(zhong)帶金(jin)屬(shu)編(bian)織(zhi)物外(wai)(wai)(wai)殼的(de)(de)(de)導線(xian)(xian)(xian)(xian),這(zhe)種(zhong)屏(ping)(ping)蔽(bi)(bi)(bi)(bi)線(xian)(xian)(xian)(xian)也有(you)防止線(xian)(xian)(xian)(xian)路(lu)(lu)向外(wai)(wai)(wai)輻射電(dian)磁(ci)(ci)能的(de)(de)(de)作用(yong)。屏(ping)(ping)蔽(bi)(bi)(bi)(bi)電(dian)纜的(de)(de)(de)屏(ping)(ping)蔽(bi)(bi)(bi)(bi)層(ceng)(ceng)主(zhu)要由(you)銅、鋁等非磁(ci)(ci)性材(cai)料(liao)制成,并且(qie)厚度很薄,遠(yuan)小于使(shi)用(yong)頻率(lv)上金(jin)屬(shu)材(cai)料(liao)的(de)(de)(de)集(ji)膚深度,屏(ping)(ping)蔽(bi)(bi)(bi)(bi)層(ceng)(ceng)的(de)(de)(de)效(xiao)果主(zhu)要不是(shi)由(you)于金(jin)屬(shu)體(ti)本(ben)身(shen)對(dui)電(dian)場(chang)、磁(ci)(ci)場(chang)的(de)(de)(de)反射、吸收(shou)而(er)產(chan)生的(de)(de)(de),而(er)是(shi)由(you)于屏(ping)(ping)蔽(bi)(bi)(bi)(bi)層(ceng)(ceng)的(de)(de)(de)接(jie)(jie)地產(chan)生的(de)(de)(de),接(jie)(jie)地的(de)(de)(de)形(xing)式(shi)不同將直接(jie)(jie)影(ying)響(xiang)屏(ping)(ping)蔽(bi)(bi)(bi)(bi)效(xiao)果。對(dui)于電(dian)場(chang)、磁(ci)(ci)場(chang)屏(ping)(ping)蔽(bi)(bi)(bi)(bi)層(ceng)(ceng)的(de)(de)(de)接(jie)(jie)地方式(shi)不同。可采用(yong)不接(jie)(jie)地...
交聯電(dian)纜和(he)普通電(dian)纜的(de)不(bu)同
作者(zhe): 發布時間:2023-03-30
交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)纜(lan)(lan)通常是(shi)(shi)(shi)指電(dian)(dian)(dian)(dian)纜(lan)(lan)絕緣(yuan)層使(shi)用(yong)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)的(de)(de)材(cai)(cai)料(liao)(liao)。最常用(yong)的(de)(de)材(cai)(cai)料(liao)(liao)是(shi)(shi)(shi)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)聚乙(yi)(yi)烯(xi)(XLPE )。接(jie)下(xia)來,給大家介紹一(yi)下(xia)“什(shen)么(me)叫(jiao)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)纜(lan)(lan),與普(pu)通電(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)區(qu)別(bie)是(shi)(shi)(shi)什(shen)么(me)。”一(yi)、什(shen)么(me)是(shi)(shi)(shi)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)纜(lan)(lan)?交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)纜(lan)(lan)是(shi)(shi)(shi)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)聚乙(yi)(yi)烯(xi)絕緣(yuan)電(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)簡稱,通常是(shi)(shi)(shi)指電(dian)(dian)(dian)(dian)纜(lan)(lan)絕緣(yuan)層使(shi)用(yong)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)的(de)(de)材(cai)(cai)料(liao)(liao)。交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)“交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)”是(shi)(shi)(shi)指電(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)主絕緣(yuan)使(shi)用(yong)了交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)聚乙(yi)(yi)烯(xi)塑(su)料(liao)(liao)。過(guo)(guo)(guo)程是(shi)(shi)(shi)將(jiang)線狀(zhuang)分子結構的(de)(de)聚乙(yi)(yi)烯(xi)(PE )材(cai)(cai)料(liao)(liao)通過(guo)(guo)(guo)特定的(de)(de)加(jia)工(gong)方(fang)式制成立體型網(wang)狀(zhuang)分線結構的(de)(de)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)聚乙(yi)(yi)烯(xi)。通過(guo)(guo)(guo)將(jiang)長(chang)期允(yun)許工(gong)作溫(wen)度(du)從70提(ti)高(gao)到(dao)90以上,將(jiang)短(duan)路允(yun)許溫(wen)度(du)溫(wen)度(du)由140℃提(ti)高(gao)到(dao)250℃(或更高(gao)),在維持原(yuan)有優異(yi)電(dian)(dian)(dian)(dian)氣性能(neng)的(de)(de)同時,大幅提(ti)高(gao)了實用(yong)性能(neng)。交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)纜(lan)(lan)有許多交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)方(fang)法。常用(yong)的(de)(de)交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)方(fang)法有過(guo)(guo)(guo)氧化(hua)物化(hua)學、硅烷交(jiao)(jiao)(jiao)(jiao)聯(lian)(lian)(lian)(lian)(lian)(lian)...
為什么有的(de)電線是沒有絕緣皮包著的(de)?
作者: 發布(bu)時間(jian):2023-03-30
可能大家會(hui)留意到有(you)(you)(you)些電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)是(shi)(shi)裸(luo)(luo)(luo)的(de)!那么(me)這樣(yang)的(de)電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)會(hui)發(fa)生(sheng)觸電(dian)(dian)(dian)的(de)現(xian)象嗎?事實上“裸(luo)(luo)(luo)”高(gao)壓(ya)(ya)線(xian)(xian)(xian)(xian), 很常見(jian),業內人(ren)士稱(cheng)之(zhi)(zhi)為“裸(luo)(luo)(luo)線(xian)(xian)(xian)(xian)”。但是(shi)(shi)既然(ran)有(you)(you)(you)人(ren)問,我們覺得有(you)(you)(you)必(bi)要(yao)再解釋一遍。為什(shen)么(me)有(you)(you)(you)些高(gao)壓(ya)(ya)電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)會(hui)“裸(luo)(luo)(luo)奔”。你(ni)要(yao)知道(dao)——絕(jue)緣(yuan)(yuan)(yuan)(yuan)皮之(zhi)(zhi)所以(yi)能絕(jue)緣(yuan)(yuan)(yuan)(yuan),是(shi)(shi)因為制作絕(jue)緣(yuan)(yuan)(yuan)(yuan)皮所用(yong)的(de)材(cai)料能對電(dian)(dian)(dian)流形成很大的(de)阻力。直流電(dian)(dian)(dian)無法通(tong)(tong)過,所以(yi)不會(hui)傳導(dao)(dao)到人(ren)體。交(jiao)流電(dian)(dian)(dian)通(tong)(tong)過絕(jue)緣(yuan)(yuan)(yuan)(yuan)材(cai)料時,會(hui)產生(sheng)容性電(dian)(dian)(dian)流,由(you)于通(tong)(tong)過的(de)電(dian)(dian)(dian)荷可以(yi)忽略不計,所以(yi)通(tong)(tong)常被認為是(shi)(shi)不導(dao)(dao)電(dian)(dian)(dian)的(de)。高(gao)壓(ya)(ya)線(xian)(xian)(xian)(xian)為什(shen)么(me)可以(yi)裸(luo)(luo)(luo)?電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)是(shi)(shi)否(fou)應該(gai)包扎與電(dian)(dian)(dian)壓(ya)(ya)水平密切(qie)相關。一般來說,10kV以(yi)上的(de)高(gao)壓(ya)(ya)線(xian)(xian)(xian)(xian)是(shi)(shi)沒(mei)有(you)(you)(you)絕(jue)緣(yuan)(yuan)(yuan)(yuan)皮的(de)。原因如下(xia):1.面對高(gao)壓(ya)(ya)電(dian)(dian)(dian)流,絕(jue)緣(yuan)(yuan)(yuan)(yuan)皮的(de)作用(yong)非常有(you)(you)(you)限。當電(dian)(dian)(dian)壓(ya)(ya)在(zai)天氣或線(xian)(xian)(xian)(xian)路故障(zhang)的(de)影響(xiang)下(xia)突然(ran)升高(gao)時,破損...