電纜額定電壓與電纜芯數之間有什么關系？

1kV及左右對1~5芯線材的決定具體條件

單芯拖鏈電纜

線(xian)路圖較長，工作中交流電巨大(da)的回路開(kai)關或海(hai)底敷設時，為杜絕或極(ji)大(da)減少里頭(tou)連接(jie)管，或單(dan)(dan)芯(xin)電力(li)通(tong)信電線(xian)比(bi)多芯(xin)電力(li)通(tong)信電線(xian)有(you)非常好的一(yi)體化水平生活時，可(ke)以用單(dan)(dan)芯(xin)電力(li)通(tong)信電線(xian)。

非高(gao)壓直流電源變(bian)電二次回路，當須要時可(ke)采用(yong)了單(dan)芯電攬。

2芯電攬

1kV及如下24v電(dian)(dian)源普通點會跨接時(shi)，兩(liang)相電(dian)(dian)電(dian)(dian)路開關的通信低壓電(dian)(dian)纜芯數，當保護措施線和普通線共用同導(dao)體時(shi)，應運(yun)用2芯通信低壓電(dian)(dian)纜。

交流電供電設(she)備(bei)回路開(kai)關，宜用到2芯(xin)電纜線。

3芯電覽

1kV十分下列(lie)主機(ji)電源一般的普通點(dian)進行維護(hu)接地時，兩相電控制回路的拖鏈數據(ju)線(xian)芯數為：當(dang)維護(hu)線(xian)和一般的普通線(xian)相對(dui)孤立(li)時，宜用于3芯拖鏈數據(ju)線(xian)。

4芯電力電纜

1kV及(ji)如下的4芯高壓(ya)拖鏈電(dian)(dian)(dian)(dian)纜（3+1高壓(ya)拖鏈電(dian)(dian)(dian)(dian)纜），進來的第4芯除看做庇護接地保護外，還需要傳輸功率系統是不和(he)平點交(jiao)流(liu)電(dian)(dian)(dian)(dian)及(ji)擊穿交(jiao)流(liu)電(dian)(dian)(dian)(dian)。它的面積大小由不和(he)平點交(jiao)流(liu)電(dian)(dian)(dian)(dian)及(ji)擊穿交(jiao)流(liu)電(dian)(dian)(dian)(dian)來設定(ding)，但平常沒法高于相線的1/2。

1kV簡答(da)之下三相四線(xian)(xian)(xian)(xian)四線(xian)(xian)(xian)(xian)制底壓(ya)(ya)(ya)變電(dian)(dian)(dian)系統，當保養線(xian)(xian)(xian)(xian)和普通線(xian)(xian)(xian)(xian)同用同導體時，應選取4芯(xin)電(dian)(dian)(dian)力(li)(li)高(gao)壓(ya)(ya)(ya)線(xian)(xian)(xian)(xian)纜(lan)，而不得已選取3芯(xin)電(dian)(dian)(dian)力(li)(li)高(gao)壓(ya)(ya)(ya)線(xian)(xian)(xian)(xian)纜(lan)加單芯(xin)電(dian)(dian)(dian)力(li)(li)高(gao)壓(ya)(ya)(ya)線(xian)(xian)(xian)(xian)纜(lan)組合成(cheng)小電(dian)(dian)(dian)路的習慣(guan)，幾乎直接的憑借3芯(xin)電(dian)(dian)(dian)力(li)(li)高(gao)壓(ya)(ya)(ya)線(xian)(xian)(xian)(xian)纜(lan)的金屬制絕緣護套或鎧裝層(ceng)等作普通線(xian)(xian)(xian)(xian)的習慣(guan)。因此，當3相電(dian)(dian)(dian)壓(ya)(ya)(ya)電(dian)(dian)(dian)流不發展(zhan)時，很(hen)多于單芯(xin)電(dian)(dian)(dian)力(li)(li)高(gao)壓(ya)(ya)(ya)線(xian)(xian)(xian)(xian)纜(lan)的進行睡眠(mian)狀態，簡單產生工頻抑(yi)制。

5芯電纜線

1kV非常(chang)一些的相(xiang)電壓(ya)四(si)線(xian)(xian)(xian)制舒張壓(ya)證(zheng)(zheng)書供(gong)電整體設(she)備(bei)(bei)整體，有點(dian)可(ke)靠(kao)性(xing)想要(yao)較高的機械(xie)控制整體供(gong)電整體設(she)備(bei)(bei)方式，包(bao)括有點(dian)不但能保證(zheng)(zheng)機械(xie)可(ke)靠(kao)，又要(yao)抗干涉接地(di)裝(zhuang)置的通信整體中(zhong)央和自(zi)主化(hua)設(she)備(bei)(bei)，宜(yi)主要(yao)包(bao)括5芯(xin)線(xian)(xian)(xian)的TN-C舒張壓(ya)證(zheng)(zheng)書供(gong)電整體設(she)備(bei)(bei)整體，使保護線(xian)(xian)(xian)（PE線(xian)(xian)(xian)）和弱酸性(xing)線(xian)(xian)(xian)(PN線(xian)(xian)(xian))相(xiang)互之間自(zi)由，纜芯(xin)截總(zong)面積積應該為3大(da)2小(xiao)或4大(da)1小(xiao)或5大(da)。

中油田纜線芯數的挑選

而言3~35kV380V供水雙回(hui)(hui)路開關(guan)(guan)開關(guan)(guan)高(gao)(gao)壓(ya)(ya)(ya)(ya)高(gao)(gao)壓(ya)(ya)(ya)(ya)電(dian)覽線(xian)芯數的(de)首選。當(dang)工作上(shang)感應電(dian)流較高(gao)(gao)的(de)雙回(hui)(hui)路開關(guan)(guan)開關(guan)(guan)或高(gao)(gao)壓(ya)(ya)(ya)(ya)高(gao)(gao)壓(ya)(ya)(ya)(ya)電(dian)覽線(xian)敷設于(yu)海底(di)時(shi)，每雙回(hui)(hui)路開關(guan)(guan)開關(guan)(guan)能(neng)選用(yong)3根單(dan)(dan)芯高(gao)(gao)壓(ya)(ya)(ya)(ya)高(gao)(gao)壓(ya)(ya)(ya)(ya)電(dian)覽線(xian)；除(chu)以上(shang)的(de)癥(zheng)狀(zhuang)外，采(cai)用(yong)用(yong)3芯高(gao)(gao)壓(ya)(ya)(ya)(ya)高(gao)(gao)壓(ya)(ya)(ya)(ya)電(dian)覽線(xian)，3芯高(gao)(gao)壓(ya)(ya)(ya)(ya)高(gao)(gao)壓(ya)(ya)(ya)(ya)電(dian)覽線(xian)能(neng)選用(yong)尋常統包型，也能(neng)選用(yong)3根單(dan)(dan)芯高(gao)(gao)壓(ya)(ya)(ya)(ya)高(gao)(gao)壓(ya)(ya)(ya)(ya)電(dian)覽線(xian)絞合組(zu)成型。

對110kV相電(dian)壓供(gong)水雙漏電(dian)開關(guan)，除敷設(she)于(yu)湖、海洋下等的地(di)方且纜線截(jie)面積往往并不大時可(ke)選(xuan)裝(zhuang)裝(zhuang)用3芯(xin)(xin)外，每雙漏電(dian)開關(guan)可(ke)選(xuan)裝(zhuang)裝(zhuang)用3根單芯(xin)(xin)纜線。

對110kV這相電(dian)壓用(yong)電(dian)雙二次(ci)回路(lu)(lu)，每(mei)雙二次(ci)回路(lu)(lu)要選用(yong)3根(gen)單(dan)芯(xin)電(dian)線(xian)。

電(dian)力設備(bei)化鐵路(lu)網等高壓(ya)電(dian)聊天單相電(dian)供(gong)氣回路(lu)開關，應當應用(yong)用(yong)2芯(xin)電(dian)力拖鏈電(dian)纜或每(mei)回應用(yong)2根單芯(xin)電(dian)力拖鏈電(dian)纜。

高壓(ya)變(bian)壓(ya)器直流電變(bian)電設(she)備，宜常用(yong)單芯高壓(ya)低壓(ya)電纜(lan)；在湖、海等(deng)海下敷設(she)時，也可常用(yong)同軸型2芯高壓(ya)低壓(ya)電纜(lan)。