VV线与YJV线有什么区别

是绝缘材料不同.
VV是聚氯乙烯绝缘聚氯乙烯护套
YJV是交联聚氯乙烯绝缘聚氯乙烯护套
正是因为材料不同,
所以VV与YJV电缆允许长期工作最高温度不同,
VV:电缆导体的允许长期工作最高温度为70℃
YJV:电缆导体允许长期最高工作温度为90℃.
所以两种电缆载流量不同,YJV大一些,
但YJV电缆价格上要比VV贵.
YJV
Y----聚乙烯 J-----交联 V----聚氯乙烯护套 0.6/1kV交联聚乙烯绝缘电力电缆 XLPE Insulated Power Cable 产品标准 standard 本产品按GB12706《额定电压35KV铜芯、铝芯塑料绝缘电力电缆》标准生产,同时还可根据用户需要按国际电工委员会推荐标准IEC、英国标准、德国标准及美国标准生产.The product is manufactured according to the standard of GB12706、IEC.BS,DIN and ICEA upon request.适用范围 Applications 本产品适用于工频额定电压64/1KV及以下配电网或工业装置中固定敷设之用.The product is suitable for use in power distribution lines or fixed installations with rated power- frequency voltage up to and including 0.6/1Kv.使用特性 Operating characteridtles ·工频额定UO/U为0.6/1KV.Rated power –frequency voltage UO/U为0.6/1KV.电缆导体允许长期最高工作温度为90℃.Max.permissible continuous operating temperature of conductor:90℃.短路时（最长持续时间不超过5s）电缆导体的最高温度不超过250℃.Max.short –circuit temperature of conductor shall not exceed 250℃(5s maximum duration ).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：不小于电缆外径的15倍.The bending radius should not less than 15 times of cable diameter
VV
工频额定电压Uo/U为0.6/1KV.Rated power-frequency voltage Uo/U:0.6/1KV.电缆导体的允许长期工作最高温度为70℃ Max.permissible continuous operating temperature of conductor:70℃ 短路时（最长持续时间不超过5s）电缆导体的允许最高温度：导体截面 ≤ 300mm2 – 160℃； 导体截面 300 – 140＞℃； Max.short-circuit temperature of the conductor shall not excssd:(5smaximum duration).Cross-section of conducter ≤ 300mm2 – 160℃； Cross-section of conducter ＞ 300mm2 – 140℃,电缆敷设时环境温度应不低于0℃.The ambient temperature under installation should should not below0℃ 电缆弯曲半径不小于电缆外径10倍.The bending radius of a cable should not be less than 10 times of the cable diameter.电缆的型号 Type of cable