本产品适用于固定敷设交流50Hz额定电压 (U₀/U) 0.6／1.0 kV的线路中。供输配电能之用。
　　These cable are suitable for use in fi×ed installations for rated voltages (U₀/U) 0.6／1.0 kV，ac， 50Hz, as power transmission/distribution lines．

二、型号，名称 (见表1-1)
Cable size (Table 1-1)

三、规格 (见表2-2) Cable size (Table 2-2)

四、主要特点
Main characteristics

　　1．具有较低且均匀的正(逆)序和零序阻抗，有利于改善供电品质。
Low and even forward (backward) and zero sequence impedance improves the quality of power supply．

　　2．同心层导体比普通第四(五)芯在零序工作状态下的电抗值低得多，有利于短路自动保护装置的灵敏动作，从而保证电缆和相关设备的安全运行。

　　Compared with the fourth (fifth) core of ordinary four (five) power cables，the outer coaxial conductor has a much lower reactance value when operating in zero sequence, which contributes to the fast action of automatic short circuit protection so as to ensure the safe operation of cables and related equipment．

　　3．五芯电缆适用于TN-C、TN-C-S电缆中性点直接接地系统。
　　Five conductor cables are suitable for use in systems where TN- C and TN-C-S cable neutral points directly grounded。

　　4．具有较强的抗干扰和抗雷击性能。
　　High EM interference-resisting and lightning-resisting performance．

　　5．电缆长期工作温度为70℃。
　　The cables have a long-term operating temperature of 70℃．

五、电缆计算外径 (见表3-3)
Calculated overall diameter of cable (Table 3-3)

型号
Type

电缆名称
Designation

VVT

铜芯聚氯乙烯绝缘同心导体聚氯乙烯护套电力电缆
Copper conductor PVC insulated PVC sheathed power cables with concentric conductor

VLVT

铝芯聚氯乙烯绝缘同心导体聚氯乙烯护套电力电缆
Aluminium conductor PVC insulated PVC sheathed power cables with concentric conductor

VVT22

铜芯聚氯乙烯绝缘同心导体钢带铠装聚氯乙烯护套电力电缆
Copper conductor PVC insulated PVC sheathed power cables with concentric conductor and steel tape armouring

VLVT22

铝芯聚氯乙烯绝缘同心导体钢带铠装聚氯乙烯护套电力电缆
Aluminium conductor PVC insulated PVC sheathed power cables with concentric conductor and steel tape armouring

型号 Type

芯数
Number of cores

标称截面mm²
Nominal cross-section

铜芯
Copper conductor

铝芯
Aluminium conductor

VVT
VVT22

VLVT
VLVT22

3+1 (T)

4-300

VVT
VVT22

VLVT
VLVT22

3+1+1 (T)

4-185

VVT
VVT22

VLVT
VLVT22

4+1 (T)

4-185