一、電纜終端頭是什么
電纜鋪設好后,為了使其成為一個連續的線路,各段線必須連接為一個整體,這些連接點就稱為電纜接頭,線路兩末端的電纜接頭稱為電纜終端頭。電(dian)纜終端頭集防水(shui)、應(ying)力(li)控制、屏(ping)蔽(bi)、絕緣于(yu)一體(ti),具(ju)有良好的電(dian)氣(qi)性(xing)能(neng)和機械性(xing)能(neng),能(neng)在(zai)各(ge)種惡劣的環境條件下長期使用。具(ju)有重量輕、安裝方便等(deng)優點。電(dian)纜終端頭廣泛應(ying)用于(yu)電(dian)力(li)、石(shi)油化工、冶金、鐵路港(gang)口和建筑等(deng)各(ge)個領(ling)域。
二、電纜終端頭的作用
電纜(lan)終(zhong)(zhong)(zhong)端(duan)頭(tou)作用(yong)是(shi)裝配(pei)到電纜(lan)線路的首末(mo)端(duan),用(yong)以完成與其他電氣(qi)設備連接(jie)的裝置,有戶(hu)外終(zhong)(zhong)(zhong)端(duan)頭(tou)、戶(hu)內終(zhong)(zhong)(zhong)端(duan)頭(tou)、肘形終(zhong)(zhong)(zhong)端(duan)頭(tou)等。
電(dian)(dian)(dian)纜(lan)終(zhong)端頭均(jun)勻電(dian)(dian)(dian)纜(lan)末端電(dian)(dian)(dian)場(chang)(chang)分(fen)布(bu),實現電(dian)(dian)(dian)應(ying)力的(de)有效控制(zhi)。電(dian)(dian)(dian)應(ying)力控制(zhi)就是指對電(dian)(dian)(dian)場(chang)(chang)分(fen)布(bu)及(ji)電(dian)(dian)(dian)場(chang)(chang)強度的(de)控制(zhi),采(cai)取適當的(de)措施(shi),使電(dian)(dian)(dian)場(chang)(chang)分(fen)布(bu)及(ji)電(dian)(dian)(dian)場(chang)(chang)強度處(chu)于最佳(jia)狀態(tai),使電(dian)(dian)(dian)場(chang)(chang)分(fen)布(bu)盡可能均(jun)勻,提高電(dian)(dian)(dian)纜(lan)運行的(de)可靠性。
三、電纜終端頭的分類
1、按安(an)裝材料分(fen)為熱縮(suo)電(dian)(dian)纜終(zhong)端頭和冷縮(suo)電(dian)(dian)纜終(zhong)端頭。
2、按工作(zuo)電(dian)壓分為(wei)1KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)、10KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)、27.5KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)、35KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)、66KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)、110KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)、138KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)、220KV電(dian)纜(lan)(lan)(lan)(lan)頭(tou)(tou)(tou)。
3、按使用條件(jian)分為(wei)分為(wei)戶內電纜終端(duan)頭(tou)和(he)戶外電纜終端(duan)頭(tou)。
4、按芯(xin)數分(fen)為單芯(xin)終(zhong)(zhong)端(duan)(duan)頭(tou)(tou)、兩芯(xin)終(zhong)(zhong)端(duan)(duan)頭(tou)(tou)、三(san)芯(xin)終(zhong)(zhong)端(duan)(duan)頭(tou)(tou)、四芯(xin)終(zhong)(zhong)端(duan)(duan)頭(tou)(tou)(又分(fen)為四等芯(xin)和3+1)、五芯(xin)終(zhong)(zhong)端(duan)(duan)頭(tou)(tou)(又分(fen)為五等芯(xin)、3+2和4+1)。