yjv22-1kv-3*50+2*25铠装电力电缆产品标准 Standard of Product
本产品按GB/T 12706-2002《额定电压1KV（Um=1.2KV） 到35Kv(Um=40.6KV)挤包绝缘电力电缆及附件》标准生产，同时还可根据用户需要按国际电工委员会推荐IEC标准、英国标准、德国标准及美国标准生产。
The product is manufactured according to the standards of GB/T 12706-2002。At the same time ,it can also be manufactured according to IEC, BS, DIN and AEIC upon request.
yjv22-1kv-3*50+2*25铠装电力电缆适用范围 Application
本产品适用于工频额定电压0.6/1kV及以下配电网或工业装置中固定敷设之用。
The product is suitable for power distribution lines or fixed installation with rated power- frequency voltage up to and including 0.6/1kV.
yjv22-1kv-3*50+2*25铠装电力电缆使用特性 Operating Characteristics
工频额定Uo/U为0.6/1kV。
Rated power-frequency voltage Uo/U is 0.6/1kV.
电缆导体允许长期*高工作温度为90℃。
Max. permissible continuous operating temperature of conductor is 90℃.
短路时（*长持续时间不超过5s）电缆导体的*高温度不超过250℃。
Max. temperature of conductor during short circuit (5s maximum duration ) shall not exceed 250℃.
电缆敷设时环境温度应不低于0℃。
The ambient temperature under installation should not below 0℃.
电缆弯曲半径：单芯电缆不小于电缆外径20倍；三芯电缆不小于电缆外径15倍。
The bending radius of a single-core cable: not less than 20 times of cable’s OD
The bending radius of a three-core cable: not less than 15 times of cable’s.OD
电缆敷设运行条件 Installation operating condition of cable
在空气中的敷设 In Air
1.单芯电缆平行敷设时中心距离：185mm2及以下为电缆直径的2倍；240mm2及以上为90mm。
If the single-core cables are paralleled laid , the distance between the cable center is 2 times diameter of the cable for cross-section of conductor≤185 mm2 and 90mm for cross-section of conductor ≥240 mm2.
周围环境空气温度：40℃
Ambient air temperature: 40℃
导体的长期允许*高工作温度：90℃
Max. continuous operating temperature of conductor:90℃
不同环境温度下的载流量修正系数：
Correction factor of current rating under different air temperature:

Ambient temperature	20℃	25℃	30℃	35℃	40℃	45℃	50℃	55℃
Correction factor	1.23	1.17	1.12	1.06	1.00	0.94	0.87	0.81

直埋敷设 Direct in the ground
单芯电缆不接触敷设时电缆中心距离为电缆直径的2倍。
If he single-core cables are installed separately , the distance between the cable’s center is 2 times diameter of the cable.
土壤温度：25℃
Soil temperature: 25℃
导体的长期允许*高工作温度： 90℃
Max. continuous operating temperature of conductor: 90℃
4. 土壤热阻系数：1.0k.m/w ]
Soil thermal resistivity:1.0k.m/w
5. 直埋深度：0.7m
Depth of laying : 0.7 m.
不同土壤温度下的载流量修正系数：
Correction factor of current rating under different soil temperature:

Soil temperature	10℃	15℃	20℃	25℃	30℃	35℃
Correction factor	1.11	1.07	1.04	1.00	0.96	0.92