Application

It is used as power distribution and transmission system at rated voltage 0.6/1KV, AC50Hz.

Performance

a.The long-time working temperature of cable should not be higher than 70℃.

b.When core is in short-circuit(max 5s), the temperature should not exceed 160℃.

c.While installation the ambient temperature should not be lower than 0 , and the bending radius should not be less than 10 times of outer diameter of cable.

Model, name and application

Structure and size

VV,VLV,ZRVV,ZRVLV

0.6/1kv PVC Insulated PVC Sheathed Flame Retardant or Non-flame Retardant power Cable

VV22,VLV22,ZRVV22,ZRVLV22

0.6/1kv PVC Insulated steel Armoured PVC Sheathed Flame Retardant or Non-flame Retardant Power

Installation

a.Installation

   1）The installation temperature should not over 20 , lf the ambient temperature is lower than 0 ,the cable should be preheated;

   2）The bending radius of cable should not less than 5 times;

   3）After installation, the cable should have voltage test for 15min. 3.5kv d.c.

b.In air laying

   1）As the single core cable laying in parallel, the distance between the cable:center is 2 times(for cables,which cross sectional area of conductor 185mm2)and 90mm(for cables,which cross sectional     area of conductor 240mm2);

   2）Ambient temperature: 30 ;

   3)Max.temperature of conductor: 70 ;

   4)Modified coefficient of current carrying capacity for ambient temperature:

c.Direct in ground laying

   1)When the single core cables are installed separately, the distance between the cable: center is 2 times of the cable diameter;

   2)Ambient temperature: 25;

   3)Max.temperature of conductor: 70;

   4)Soil thermour resistivity: 1.0 .m/w;

   5)Depth: 0.7m;

   6) Modified coefficient of current carrying capacity for ambient temperature:

d.Short-circuit ratings

Current Carrying Capacity

VV,ZRVV

0.6/1kV Copper Conductor PVC Insulated PVC sheathed Flame Retardant & Non-Flame Retardant Power Cable Installed in Air for Long Term and Continuously Load

VLV,ZRVLV

0.6/1kV Aluminum Conductor PVC Insulated PVC sheathed Flame Retardant or Non-flame Retardant Power Cable Installed in Air for Long Termand Continuously Load

VV22,ZRVV22

0.6/1kV Copper Conductor PVC Insulated PVC Sheathed Flame Retardant & Non-flame Retardant Power Cable Installed Direct in Ground for Long Term Continuously Load

VLV22 , ZRVLV22

0.6/1kV Aluminum Conductor PVC Insulated PVC Sheathed Flame Retardant & Non-flame Retardant power Cable Installed Direct in Ground for Long Term and Continuously Load

Q: What kind of cable is VV cable? 

A: VV cable is PVC insulated PVC sheathed power cable. It consists of copper or aluminum conductors, PVC insulation and PVC sheathing. 

Q: What are the characteristics of VV cables? 

A: VV cable has good electrical insulation performance, can effectively prevent leakage. Its mechanical strength is high, can withstand a certain tension and pressure, in the laying process is not easy to damage. Moreover, polyvinyl chloride sheath has good corrosion resistance and can adapt to different environments, such as indoor, tunnel, cable trench and other environments can be used. 

Q: What are the disadvantages of VV cables? 

A: Its heat resistance is relatively limited, and in high temperature environments, the insulation and sheath performance of the cable may be affected. In addition, its transmission capacity is slightly inferior to that of some new high-performance cables in large current transmission. However, because of its high cost performance, it is still widely used in many ordinary power transmission scenarios.