YJV YJV22 35kV及以下交聯(lián)聚乙烯絕緣電力電纜耐壓性能和驗收中英文說明

一、生產執(zhí)行標準

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，采用電工委員會IEC60502-1997標準生產。

Executive standard

As s e ctio n “e x tr ud ed i n s u l a tion po w e r c a ble with rated voltage from 1kV（Um=1. 2 kV）to 3 5 kV （Um=40.5 kV）” stipulated in GB/T12706.1-2008~ GB/ T12706.3 -2008 or IEC60502-1997 according to the re-quirement of the customer.

二、使用特點

1、電纜導體的允許長期zui高工作溫度為90℃。

       2、短路時（zui長持續(xù)時間不超過5秒）電纜導體的zui高溫度不超過250℃。

3、電纜敷設時的環(huán)境溫度不得低于0℃。

      4、電纜的zui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：電纜設計用的導體對地或金屬屏蔽之間的額定工頻電壓，稱相電壓；

U：電纜設計用的導體間的額定工頻電壓，稱線電壓；

Um：設備可承受的“zui高系統(tǒng)電壓”的zui大值。

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 lessthan 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.

U 0: rated A .C. voltage of c onductor to ear th 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

三、電纜結構示意圖

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注：1、土壤溫度為25℃，土壤熱阻系數為1.0℃.m/w。 Note: 1. Soil temperature is 25℃. Heat-resistant coefficient of soil is 1.0℃.m/w.

2、單芯電纜平型排列時，相鄰電纜間的距離等于電纜外徑。 2.Distance between two close cables amount to outer diameter of cable when being arrayed in parallel for cable with single core.

3、鎧裝型電纜的載流量值可參照非鎧裝電纜，比非鎧裝電纜略。3. You can refer to that of inarmored cable about current-loading capacity of armored cable, which is relevantly smaller compared with that of inarmored cable.