广州南洋电缆有限公司ZC-YJV22-26∕35kV-3×300交联电缆
一、产品特点及用途Product features and uses
本产品适用于额定电压6KV（Um=7.2KV）到35KV(Um=40.5KV)的配电网或工业装置中。
This product is applicable for the ratedvoltage 6kV(Um =7.2kV) to35Kv(Um =40.5kV) power distribution network orindustrial equipments.
产品标准Product standards: GB/T12706.2, GB/T 12706.3, GB/T 19666
二、产品使用特点Product Usage Characteristics
1、 额定电压UO/U为26/35KV,
Rated voltage UO/U is 26/35KV
2、 电缆导体的长期工作温度等级为90℃
Conductor temperature allowd during long term operation is 90℃
3、短路时（最长持续5秒S）,导体最高温度不超过250℃。
When max short circuit in 5s, maxconductor temp not exceed 250℃.
4、 电缆敷设温度应不低于0℃
Installation temperature is not lower than0 and
5、电缆安装时的最小允许弯曲半径见下表。
Min bending radius allowed is as below.
( D-the diameter of cable )
电缆安装时的最小弯曲半径Minimum bending radius when cable installed
项目Application | 单芯电缆 Single-core | 三芯电缆Three-core |
安装时的电缆最小弯曲半径Min bending radius when installed | 20D | 15D | 15D | 12D |
靠近链接盒和终端电缆的最小弯曲半径（但弯曲要小心控制，如采用成型导板） | 15D | 12D | 12D | 10D |
注：D为电缆外径。Note: D is the cable diameter |
6、敷设条件Installation condition
(1)空气中电缆敷设在阴影处，环境温度为40℃；土壤中电缆直埋深度为700mm,土壤热阻系数为1.0k.m/w，环境温度为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）单芯电缆三根水平平行敷设及星形敷设时，中心间距均为一倍电缆外径；多芯为单根敷设。
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.
载流量修正系数Correctioncoefficient of rating current
土壤热阻系数对载流量的影响Effect of thermal resistivity of soil |
热阻系数Thermal Resistivity k.m/w | 0.8 | 1.0 | 1.2 | 1.5 | 2.0 |
修正系数 Correct coefficient | 1.08 | 1.00 | 0.94 | 0.85 | 0.75 |
土壤温度对载流量的影响Effect of soil temperature |
土壤温度 Soil temperature ℃ | 10 | 15 | 20 | 25 | 30 | 35 |
修正系数 Correct coefficient | 1.11 | 1.07 | 1.04 | 1.00 | 0.96 | 0.92 |
空气温度对载流量的影响Effect air temperature |
空气温度 Air temperature | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
修正系数 Correct coefficient | 1.23 | 1.17 | 1.12 | 1.06 | 1.00 | 0.94 | 0.87 |
敷设深度对载流量的影响Effect of laying depth |
敷设温度 Laying depth mm | 500 | 700 | 1000 | 1200 | 1500 |
修正系数 Correct coefficient | 1.03 | 1.00 | 0.98 | 0.94 | 0.92 |
