在過去15至20年來交聯(lián)聚乙烯絕緣電纜的需求迅速增長,這種類型的電纜已成為電力電纜的主要類型。
勝宇電纜積極開發(fā)和應(yīng)用交聯(lián)聚乙烯絕緣電纜*近的制造技術(shù),并一直在不斷努力獲得更多的從事質(zhì)量穩(wěn)定,并產(chǎn)生更高電壓的交聯(lián)聚乙烯絕緣電纜(超過500千伏)。
本目錄中的產(chǎn)品是基于了GB / T12706-2008規(guī)范。
本產(chǎn)品適用于固定敷設(shè)在交流50Hz, 額定電壓35kV及以下的電力輸配電線路上作輸送電能用。 與聚氯乙烯絕緣電力電纜相比, 交聯(lián)電力電纜產(chǎn)品不僅具有優(yōu)異的電氣性能、 機(jī)械性能、 耐熱老化性能、 耐環(huán)境應(yīng)力和耐化學(xué)腐蝕性能的能力,而且結(jié)構(gòu)簡單, 重量輕, 不受敷設(shè)落差限制, 長期工作溫度高(90℃)等特點(diǎn)。
一、 生產(chǎn)執(zhí)行標(biāo)準(zhǔn)
GB/T12706.1-2008~ GB/T12706.3-2008《額定電壓1kV(Um=1.2 kV) 到35kV (Um=40.5 kV)擠包絕緣電力電纜》 ,也可按用戶需要, 采用國際電工委員會IEC60502-1997標(biāo)準(zhǔn)生產(chǎn)。
二、 使用特點(diǎn)
1、 電纜導(dǎo)體的允許長期*高工作溫度為90℃。
2、 短路時(shí)(*長持續(xù)時(shí)間不超過5秒) 電纜導(dǎo)體的*高溫
度不超過250℃。
3、 電纜敷設(shè)時(shí)的環(huán)境溫度不得低于0℃。
4、 電纜的*小彎曲半徑: 三芯電纜不小于電纜外徑的15
倍; 單芯電纜不小于電纜外徑的20倍。
5、 電纜的工頻額定電壓U0/U為0.6/1kV~26/35kV。
U0: 電纜設(shè)計(jì)用的導(dǎo)體對地或金屬屏蔽之間的額定工頻電壓, 稱相電壓;
U: 電纜設(shè)計(jì)用的導(dǎo)體間的額定工頻電壓, 稱線電壓;
Um: 設(shè)備可承受的“*高系統(tǒng)電壓”的*大值。
The cable is used to transmit power on the power transmission and distribution line of A.C. 50Hz, rated volt-age 35 KV or lower. By comparison with power cable with PVC insulation, it has not only excellent electric perfor-mance, mechanical performance, heat & aging resistant performance, weather resistant performance, chemical corrosion resistant performance, but also simple structure, light weight, no restriction by laying drop, and high tem-perature allowance for long term working(90℃) as well.
Executive standard
As section “extruded insulation power cable with rated voltage from 1kV(Um=1.2 kV)to 35kV(Um=40.5 kV) ” stipulated in GB/T12706.1-2008~ GB/T12706.3-2008 or IEC60502-1997 according to the requirement of the customer .
Working Condition
1、 Long-term working temperature by cable conductor is 90℃.
2、 Max. temperature of cable conductor shall be no more than 250℃ during short circuit (the longest lasting time shall be no more than 5 seconds).
3、 Environment temperature for installation is no less than 0℃.
4、 Min bending radium of cable:
It is no less than 15 times that of cable outer diameter for cable with three cores.
It is no less than 20 times that of cable outer diameter for cable with single core.
5、A.C. rated voltage U0/U of cable is 0.6/1kV~26/35kV.
U0: rated A.C. voltage of conductor to earth OR between metallic shielding for cable designing, which is called phrase voltage.
U: rated A.C. voltage between conductors for cable designing, which is called wire voltage.
Um: Max endurable value of “Max system voltage” for cable Working Condition |
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