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Enforcement standards
GB/T 12706
Usage Features
Cable rated working voltage Uo/U: 0.6/1kV and 1.8/3kV.
Long-term allowable operating temperature of cable conductors:
PVC insulated cables are 70℃. When short-circuited (the maximum time does not exceed 5S), the maximum temperature of the cable conductor does not exceed 160℃
The ambient temperature for laying cables should not be lower than 0°C. When it is lower than 0°C, preheating is required.
Cable laying bending radius:
Single-core cable＞20 times the outer diameter of the cable.
Multi-core cable＞15 times the outer diameter of the cable.
The five-core cable has clear neutral and ground wires, making the system more stable.
Product Usage
This product is suitable for lines with a rated voltage of 0.6/1kV: for transmission and distribution of electric energy (flame-retardant cables are suitable for high-rise buildings, subways, power stations, large industrial and mining enterprises and other places with high cable laying density and strict fire protection requirements).
Model and name
| Model |
First name title |
Applicable scope |
| Copper core |
Aluminum core |
VV
VY |
VLV
VLY |
PVC insulated PVC sheathed power cable
PVC insulated polyethylene sheathed power cable |
When laid outdoors, in tunnels, or pipes, the cables must not be affected by external mechanical forces |
VV22
VV23 |
VLV22
VLV23 |
PVC insulated steel tape armored PVC sheathed power cable
PVC insulated steel tape armored polyethylene sheathed power cable |
It is laid indoors and outdoors, in tunnels, in pipelines, and underground. The cable can be affected by mechanical external forces |
VV32
VV33 |
VLV32
VLV33 |
PVC insulated fine steel wire armored PVC sheathed power cable
PVC insulated thin steel wire armored polyethylene sheathed power cable |
Layed indoors and outdoors, in tunnels, pipes, shafts, in water or in areas with height differences, it can withstand mechanical external forces and considerable tensile forces |
Note: Model includes flame retardant type
For the sake of convenience, when signing a contract, the flame retardant category must be indicated. For example, Category A must be added with the word A after the flame retardant "Z" and written as "ZA". Category A is generally installed in harsh environments. Burning place. Class B, Class C and so on. If ZR is not specified, it will be manufactured as ZC flame retardant (ZR stands for ZC).
Production scope
| Model |
Nominal cross-section mm2 |
| Single core |
Two core |
Three cores |
Four cores |
Five cores |
VV VLV
VY VLY
WR(VRV) |
1.5-630 |
1.5-630 |
1.5-630 |
1.5-630 |
1.5-630 |
VV22 VLV22
VV23 VLV23 |
4-630 |
4-630 |
4-630 |
4-630 |
4-630 |
VV32 VLV32
W33 VLV33 |
10-630 |
10-630 |
10-630 |
10-630 |
10-630 |
Note: The production range includes flame retardant types.
Single-core cable armoring needs to be made of non-magnetic metal materials.
Four-core cables can be divided into four cores of equal cross-section or three large and one small unequal cross-section structures.
Five-core cables can be divided into five cores of equal cross-section or three large and two small, four large and one small unequal cross-section structures.
Wire core color
| Core number |
Insulated wire core pink and number logo |
Main core
Neutral core |
Ground core |
Neutral core
(Fifth core) |
| 1 |
任意色 |
- |
- |
| 2 |
红 |
蓝 |
| 3 |
黄 绿 红 |
- |
| 3+1 |
蓝 |
| 4 |
| 3+2 |
黄 绿 红 |
黑 |
| 4+1 |
- |
黑 |
交货长度
电力电缆一般成盘交货，交货总长度一般不小于100m，更短的长度根据双方协议，长度计量误差±0.5%。
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