廣州南洋電纜有限公司ZC-YJV-26∕35kV-1×50交聯(lián)電纜
一、產(chǎn)品特點(diǎn)及用途Product features and uses
本產(chǎn)品適用于額定電壓6KV(Um=7.2KV)到35KV(Um=40.5KV)的配電網(wǎng)或工業(yè)裝置中。
This product is applicable for the ratedvoltage 6kV(Um =7.2kV) to35Kv(Um =40.5kV) power distribution network orindustrial equipments.
產(chǎn)品標準Product standards: GB/T12706.2, GB/T 12706.3, GB/T 19666
二、產(chǎn)品使用特點(diǎn)Product Usage Characteristics
1、 額定電壓UO/U為26/35KV,
Rated voltage UO/U is 26/35KV
2、 電纜導體的長(cháng)期工作溫度等級為90℃
Conductor temperature allowd during long term operation is 90℃
3、短路時(shí)(最長(cháng)持續5秒S),導體最高溫度不超過(guò)250℃。
When max short circuit in 5s, maxconductor temp not exceed 250℃.
4、 電纜敷設溫度應不低于0℃
Installation temperature is not lower than0 and
5、電纜安裝時(shí)的最小允許彎曲半徑見(jiàn)下表。
Min bending radius allowed is as below.
( D-the diameter of cable )
電纜安裝時(shí)的最小彎曲半徑Minimum bending radius when cable installed
項目Application | 單芯電纜 Single-core | 三芯電纜Three-core |
安裝時(shí)的電纜最小彎曲半徑Min bending radius when installed | 20D | 15D | 15D | 12D |
靠近鏈接盒和終端電纜的最小彎曲半徑(但彎曲要小心控制,如采用成型導板) | 15D | 12D | 12D | 10D |
注:D為電纜外徑。Note: D is the cable diameter |
6、敷設條件Installation condition
(1)空氣中電纜敷設在陰影處,環(huán)境溫度為40℃;土壤中電纜直埋深度為700mm,土壤熱阻系數為1.0k.m/w,環(huán)境溫度為25℃。
When cable being laid under shade inair, the ambient temperature is 40℃; If cable is buried in soil depth of1000mm soil thermal resstivity is 1.2km/w, and the ambient temperature is 25℃.
(2)單芯電纜三根水平平行敷設及星形敷設時(shí),中心間距均為一倍電纜外徑;多芯為單根敷設。
When three of single core cables laid inparallel and star-laying, the center of the pitch are doubled of the cablediameter; multi-core cable is laid individually.
載流量修正系數Correctioncoefficient of rating current
土壤熱阻系數對載流量的影響Effect of thermal resistivity of soil |
熱阻系數Thermal Resistivity k.m/w | 0.8 | 1.0 | 1.2 | 1.5 | 2.0 |
修正系數 Correct coefficient | 1.08 | 1.00 | 0.94 | 0.85 | 0.75 |
土壤溫度對載流量的影響Effect of soil temperature |
土壤溫度 Soil temperature ℃ | 10 | 15 | 20 | 25 | 30 | 35 |
修正系數 Correct coefficient | 1.11 | 1.07 | 1.04 | 1.00 | 0.96 | 0.92 |
空氣溫度對載流量的影響Effect air temperature |
空氣溫度 Air temperature | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
修正系數 Correct coefficient | 1.23 | 1.17 | 1.12 | 1.06 | 1.00 | 0.94 | 0.87 |
敷設深度對載流量的影響Effect of laying depth |
敷設溫度 Laying depth mm | 500 | 700 | 1000 | 1200 | 1500 |
修正系數 Correct coefficient | 1.03 | 1.00 | 0.98 | 0.94 | 0.92 |