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技術知識

  • 鎧(kai)裝式(shi)計算機電纜(lan)屏蔽(bi)層的接地方式(shi)

    鎧(kai)裝式(shi)(shi)計算(suan)機(ji)電(dian)(dian)纜(lan)屏(ping)蔽(bi)層的(de)(de)接(jie)(jie)地方(fang)式(shi)(shi)，應(ying)注(zhu)意做到以下幾點(dian)(dian)：（1）計算(suan)機(ji)臨控系統(tong)的(de)(de)模擬信號回路的(de)(de)控制(zhi)電(dian)(dian)纜(lan)屏(ping)蔽(bi)層，宜用集(ji)(ji)中式(shi)(shi)一點(dian)(dian)接(jie)(jie)地。其原因(yin)基于保證計算(suan)機(ji)監控系統(tong)正常工作的(de)(de)要求，因(yin)為即使僅1V左右的(de)(de)干(gan)擾電(dian)(dian)壓，也(ye)可(ke)(ke)能引起邏輯判斷的(de)(de)謬誤，集(ji)(ji)中一點(dian)(dian)接(jie)(jie)地可(ke)(ke)避免(mian)出現(xian)接(jie)(jie)地環流;（2）除(chu)計算(suan)機(ji)監控系統(tong)的(de)(de)控制(zhi)電(dian)(dian)纜(lan)屏(ping)蔽(bi)層只(zhi)允許(xu)集(ji)(ji)中一點(dian)(dian)接(jie)(jie)地的(de)(de)情況(kuang)外，其它的(de)(de)控制(zhi)電(dian)(dian)纜(lan)屏(ping)蔽(bi)層，當電(dian)(dian)磁感應(ying)干(gan)擾較大時，宜采用兩點(dian)(dian)接(jie)(jie)地，而(er)靜電(dian)(dian)感應(ying)的(de)(de)干(gan)擾

    2020-05-25 51dianlan

  • 屏蔽電(dian)纜(lan)說電(dian)線與電(dian)纜(lan)的區別

    電(dian)(dian)(dian)(dian)線(xian)(xian)與電(dian)(dian)(dian)(dian)纜有(you)哪(na)些區別？1、材料(liao)的(de)(de)(de)(de)區別：電(dian)(dian)(dian)(dian)線(xian)(xian)一(yi)(yi)般用來(lai)承載(zai)電(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)導(dao)電(dian)(dian)(dian)(dian)金屬材料(liao)有(you)實心的(de)(de)(de)(de)﹑絞合的(de)(de)(de)(de)以(yi)及(ji)箔片編織的(de)(de)(de)(de)等等各種(zhong)形(xing)式。如果(guo)按照絕緣狀況(kuang)來(lai)劃分為裸電(dian)(dian)(dian)(dian)線(xian)(xian)和絕緣電(dian)(dian)(dian)(dian)線(xian)(xian)這(zhe)兩個大類的(de)(de)(de)(de)話。電(dian)(dian)(dian)(dian)纜是由一(yi)(yi)根(gen)或者多根(gen)相互絕緣的(de)(de)(de)(de)導(dao)電(dian)(dian)(dian)(dian)線(xian)(xian)芯一(yi)(yi)起被放置在(zai)密封護(hu)套中從而構成的(de)(de)(de)(de)一(yi)(yi)種(zhong)絕緣導(dao)線(xian)(xian)。電(dian)(dian)(dian)(dian)纜線(xian)(xian)產品的(de)(de)(de)(de)外部是可(ke)以(yi)加保(bao)護(hu)覆蓋層的(de)(de)(de)(de)。因(yin)此電(dian)(dian)(dian)(dian)線(xian)(xian)與電(dian)(dian)(dian)(dian)纜在(zai)于(yu)尺寸(cun)上的(de)(de)(de)(de)區別就是電(dian)(dian)(dian)(dian)線(xian)(xian)的(de)(de)(de)(de)尺寸(cun)一(yi)(yi)般比(bi)較小，結構也會相對的(de)(de)(de)(de)比(bi)較簡單。但在(zai)有(you)的(de)(de)(de)(de)時候(hou)人們也會將電(dian)(dian)(dian)(dian)纜

    2020-05-25 51dianlan

  • 礦(kuang)物質絕(jue)緣(yuan)防火電纜有(you)哪(na)些特點？

    1.操(cao)(cao)作(zuo)溫(wen)度(du)高(gao)：礦(kuang)物絕緣電(dian)(dian)纜可耐連(lian)續操(cao)(cao)作(zuo)溫(wen)度(du)高(gao)達250℃。但是，在(zai)(zai)(zai)緊急(ji)情況下(xia)，電(dian)(dian)纜可在(zai)(zai)(zai)接(jie)(jie)近(jin)銅(tong)護套熔點的(de)(de)溫(wen)度(du)下(xia)，在(zai)(zai)(zai)短時間內繼(ji)續操(cao)(cao)作(zuo)；2.耐火(huo)(huo)：在(zai)(zai)(zai)礦(kuang)物絕緣電(dian)(dian)纜中(zhong)(zhong)應(ying)用的(de)(de)二種材(cai)料銅(tong)和氧化鎂是無機(ji)物。此種電(dian)(dian)纜不會燃(ran)燒，也不會助燃(ran)，在(zai)(zai)(zai)接(jie)(jie)近(jin)火(huo)(huo)焰的(de)(de)條件下(xia)仍可繼(ji)續操(cao)(cao)作(zuo)；3.防爆：礦(kuang)物絕緣電(dian)(dian)纜中(zhong)(zhong)高(gao)度(du)壓實(shi)的(de)(de)絕緣材(cai)料，可阻止蒸汽、氣(qi)體和火(huo)(huo)焰在(zai)(zai)(zai)與電(dian)(dian)纜連(lian)接(jie)(jie)的(de)(de)設備零件之間通過；4.壽命長：在(zai)(zai)(zai)礦(kuang)物絕緣電(dian)(dian)纜中(zhong)(zhong)應(ying)用的(de)(de)無機(ji)材(cai)料，可保證

    2020-05-25 51dianlan

  • 高(gao)壓電纜常見故(gu)障原因主要有(you)哪(na)些？

    作(zuo)者(zhe)：zzjt 添加(jia)時(shi)(shi)間：2020-01-26 15:14:28 瀏覽(lan)：19電纜在(zai)(zai)使用的(de)(de)時(shi)(shi)候(hou)(hou)(hou)也(ye)會發生故(gu)障，我(wo)們在(zai)(zai)了解(jie)的(de)(de)時(shi)(shi)候(hou)(hou)(hou)還是需要(yao)看看具體(ti)的(de)(de)類型，相信(xin)很(hen)多人本(ben)身在(zai)(zai)了解(jie)高壓(ya)電纜的(de)(de)時(shi)(shi)候(hou)(hou)(hou)也(ye)還是想要(yao)知道故(gu)障的(de)(de)因(yin)素有哪些(xie)？要(yao)是都(dou)可以詳細的(de)(de)來(lai)了解(jie)，就能夠及(ji)時(shi)(shi)的(de)(de)來(lai)解(jie)決，所以，在(zai)(zai)很(hen)多時(shi)(shi)候(hou)(hou)(hou)我(wo)們也(ye)確實是應(ying)該看看這些(xie)基(ji)本(ben)的(de)(de)情(qing)況，保(bao)障在(zai)(zai)使用的(de)(de)時(shi)(shi)候(hou)(hou)(hou)可以很(hen)好的(de)(de)避免。故(gu)障因(yin)素一，廠家制造的(de)(de)原因(yin)，廠家在(zai)(zai)制造的(de)(de)時(shi)(shi)候(hou)(hou)(hou)可能會因(yin)

    2020-05-25 51dianlan

  • 如何辨(bian)別低(di)壓電纜和(he)中高壓電纜的區(qu)別

    電纜的(de)(de)種類(lei)繁多，但基本的(de)(de)可以(yi)分為低(di)壓(ya)(ya)(ya)(ya)電纜和(he)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)電纜，但這(zhe)兩者(zhe)應該(gai)怎(zen)么(me)區(qu)分呢？有的(de)(de)人說是250V，有的(de)(de)說是1000V，那高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)低(di)壓(ya)(ya)(ya)(ya)到底(di)怎(zen)樣區(qu)分呢？根(gen)據(ju)我國(guo)行業(ye)標(biao)準電業(ye)安全(quan)工作規程，電氣(qi)設(she)備分為高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)和(he)低(di)壓(ya)(ya)(ya)(ya)兩種：高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)：設(she)備對(dui)地電壓(ya)(ya)(ya)(ya)在(zai)250V以(yi)上者(zhe)。低(di)壓(ya)(ya)(ya)(ya)：設(she)備對(dui)地電壓(ya)(ya)(ya)(ya)在(zai)250V及以(yi)下(xia)者(zhe)。而根(gen)據(ju)2009電力線(xian)路安全(quan)規程，電器工作分為高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)和(he)低(di)壓(ya)(ya)(ya)(ya)兩種：高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)電氣(qi)設(she)備：電壓(ya)(ya)(ya)(ya)等級在(zai)1000V及以(yi)上者(zhe)；低(di)壓(ya)(ya)(ya)(ya)電氣(qi)設(she)備：電壓(ya)(ya)(ya)(ya)

    2020-05-25 51dianlan

  • 高低壓交聯電纜的(de)拉(la)伸基本原(yuan)理

    就高(gao)低壓(ya)交(jiao)聯電(dian)(dian)(dian)纜的(de)(de)現(xian)象拉(la)伸(shen)(shen)介紹下基本原理 1、高(gao)低壓(ya)交(jiao)聯電(dian)(dian)(dian)纜線(xian)材的(de)(de)拉(la)伸(shen)(shen)。高(gao)低壓(ya)交(jiao)聯電(dian)(dian)(dian)纜線(xian)材拉(la)伸(shen)(shen)是(shi)指在一(yi)定的(de)(de)拉(la)力(li)作(zuo)用下，模孔會發(fa)生(sheng)塑性變(bian)形，這樣使長度增(zeng)加、截(jie)面(mian)減小的(de)(de)一(yi)種(zhong)壓(ya)力(li)加工(gong)方式。 2、高(gao)低壓(ya)交(jiao)聯電(dian)(dian)(dian)纜線(xian)材拉(la)伸(shen)(shen)的(de)(de)特點。被拉(la)伸(shen)(shen)的(de)(de)線(xian)材的(de)(de)尺寸準確，可以拉(la)伸(shen)(shen)大長度和各種(zhong)直徑的(de)(de)線(xian)材，拉(la)伸(shen)(shen)后表(biao)面(mian)光潔，高(gao)低壓(ya)交(jiao)聯電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜斷面(mian)形狀多樣。拉(la)伸(shen)(shen)工(gong)藝、模具、設備簡單，采用的(de)(de)是(shi)冷加工(gong)，生(sheng)產效率(lv)高(gao)，拉(la)伸(shen)(shen)

    2020-05-25 51dianlan

  • 控制電纜線路(lu)中常見(jian)的(de)故障的(de)維修及預防措(cuo)施

    在(zai)施工布線(xian)(xian)(xian)當中(zhong)，經常(chang)(chang)會遇到很多問題。例(li)如說控(kong)制(zhi)型(xing)電(dian)(dian)(dian)纜(lan)(lan)(lan)線(xian)(xian)(xian)路(lu)(lu)中(zhong)常(chang)(chang)見(jian)的(de)故障有(you)哪些(xie)，這里給大家簡單的(de)介紹(shao)下(xia)控(kong)制(zhi)電(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)維修保養(yang)及預防措施。控(kong)制(zhi)電(dian)(dian)(dian)纜(lan)(lan)(lan)常(chang)(chang)用(yong)于線(xian)(xian)(xian)路(lu)(lu)電(dian)(dian)(dian)壓為450/750V及以下(xia)的(de)電(dian)(dian)(dian)器連接線(xian)(xian)(xian)和(he)自動控(kong)制(zhi)系統(tong)的(de)傳(chuan)輸(shu)線(xian)(xian)(xian)中(zhong)。在(zai)一(yi)些(xie)保護線(xian)(xian)(xian)路(lu)(lu)中(zhong)常(chang)(chang)用(yong)的(de)是聚氯乙烯(xi)絕(jue)緣型(xing)、聚氯乙烯(xi)護套(tao)型(xing)控(kong)制(zhi)電(dian)(dian)(dian)纜(lan)(lan)(lan)。此類電(dian)(dian)(dian)纜(lan)(lan)(lan)具有(you)耐(nai)(nai)(nai)油、防潮、耐(nai)(nai)(nai)機械性(xing)、耐(nai)(nai)(nai)化學性(xing)和(he)耐(nai)(nai)(nai)環境性(xing)等(deng)一(yi)些(xie)優良(liang)特(te)性(xing)。常(chang)(chang)適用(yong)于冶金、化工、房地產等(deng)行業(ye)。控(kong)制(zhi)電(dian)(dian)(dian)纜(lan)(lan)(lan)具有(you)防潮、耐(nai)(nai)(nai)腐

    2020-05-25 51dianlan

  • 高壓電纜(lan)-YJV YJV22電纜(lan)結構參數

    應用(yong):三芯線纜的設計配電(dian)(dian)范圍為(wei)3.8/6.6KV到19/33KV，頻率為(wei)50Hz。主要應用(yong)于(yu)電(dian)(dian)力供(gong)應站(zhan)(zhan)，室內管道、室外，地埋(mai)和水中(zhong)等多種(zhong)場所(suo)，以(yi)及對行(xing)業，配電(dian)(dian)站(zhan)(zhan)，電(dian)(dian)力站(zhan)(zhan)線纜的安裝(zhuang)。標準:IEC 60502 Part 1(1.8/3KV)IEC 60502 Part 2(3.6/6KV to 18/30KV)結構:導體: 平紋退火銅(tong)或(huo)鋁(lv)導體，符合 IEC 60228（1類(lei)或(huo)2類(lei)）。導體屏蔽(bi): 導體屏

    2020-05-14 51dianlan