The first V is the main insulation material of the cable is PVC polyvinyl chloride, that is, the meaning of plastic. The second V is the cable sheath material is also PVC.
The full name is copper conductor conductor PVC insulation and PVC sheathed power cable.
PVC insulated PVC sheathed cable
Two letters V
The materials representing insulation and sheath are PVC
VV Cable full name
Copper (aluminum) PVC insulated PVC insulated PVC sheath power cable, an important member of power cable, two letters V representing insulation and sheath materials are PVC;
The components from inside to outside are conductor, insulation layer, filling layer, (steel layer) and sheath layer. Now the most commonly used conductor materials on the market are of course copper conductors; the insulating and outer sheath materials are PVC, or PVC plastics; the filling layers are generally soft nylon materials, in order to prevent direct contact between the conductors in the cable; the steel tape armoured VV cable is a VV22 cable and a steel strip. The effect of armour is compression and can be used for buried.
Standard of execution
Generally 0.6/1KV, or below 35KV；
The long-term working temperature is not more than 70 C, the laying temperature is not less than 0 degrees C, and the maximum allowable temperature of the cable conductor is 160 C when the short circuit (the longest duration is not more than 5S).
Allowable bending radius
Not less than 10 times the outer diameter of the cable;
Generally used as a power transmission hub, often buried in the soil or applied in the indoor, ditch, tunnel, the insulation distance between lines is small, no pole tower, less space, basically do not occupy the ground space.
VV Common specifications and models of cable
The core number consists of 2 cores, 3 cores, 4 cores, and 5 cores、3+1、3+2、4+1；
The cross section includes cables from 1.5 mm2 - 240mm2, such as VV3*95+1*50 cable, which represent 3 strands of 95 square cores plus 1 1 square wires.