1.Executive standard
GB/T 12706.1-2020
2.Appilcation
The product is suitable for power supply, transmission and distribution lines with rated AC voltage U0/U 26/35kV and below.
3.Character
A) during normal operation of cable, the maximum conductor temperature shall be 70℃ for PVC insulation and 90℃ for XLPE insulation.
B) Maximum temperature of conductor during short circuit (maximum duration not exceeding 5 seconds) :
PVC insulation — 160℃ for conductor cross section ≤300mm2, 140℃ for conductor cross section > 300mm2; Crosslinked PVC insulation at 250℃.
C) When laying cables, the ambient temperature shall not be less than 0℃, and the minimum allowable bending radius is as follows:
Single core cable: unarmored 20D, armored 15D
Multi-core cable: 15D for unarmored, 12D for armored
Where: D- actual outer diameter of cable.
D) Cable breaking force:
Aluminum core cable: 40×S (N)
Copper core cable: 70×S (N)
Note: S is the total cross-sectional area of the conductor
4.model and application
| Model | Name | Usage | |
|---|---|---|---|
| Copper core | aluminium core | ||
| VV | VLV | PVC insulated and sheathed power cable | Can be laid at indoor, tunnel and tube. Cable cannot under take mechanism outside force |
| VY | VLY | PVC insulated PE sheathed power cable | Can be laid at indoor, tunnel tube and serious polluted places. Cable cannot undertake mechanism outside force |
| VV22 | VLV22 | PVC insulated steel tape armored PVC sheathed power cable | Can be laid at indoor, tunnel tube and mining well. Cable cannot undertake mechanism outside force |
| VV23 | VLV23 | PVC insulated steel tape armored PE sheathed power cable | Can be laid at indoor, tunnel tube mining well and serious polluted places. Cable cannot undertake mechanism outside force |
| VV32 | VLV32 | PVC insulated fine steel wire armored PVC sheathed power cable | Can be laid at indoor, underground and mining well. Cable can undertake mechanism outside force |
| VV33 | VLV33 | PVC insulated fine steel wire armored PE sheathed power cable | Can be laid at indoor, underground .Cable can under take mechanism outside force |
| YJV | YJLV | XLPE insulated PVC sheathed power cable | Can be laid at indoor, tunnel and tube. Cable cannot under take mechanism outside force |
| YJY | YJLY | XLPE insulated PE sheathed power cable | Can be laid at indoor, tunnel tube and serious polluted places. Cable cannot undertake mechanism outside force |
| YJV22 | YJLV22 | XLPE insulated steel tape armored PVC sheathed power cable | Can be laid at indoor, tunnel tube and mining well. Cable cannot undertake mechanism outside force |
| YJV23 | YJLV23 | XLPE insulated steel tape armored PE sheathed power cable | Can be laid at indoor, tunnel tube mining well and serious polluted places. Cable cannot undertake mechanism outside force |
| YJV32 | YJLV32 | XLPE insulated fine steel wire armored PVC sheathed power cable | Can be laid at indoor, underground and mining well. Cable can undertake mechanism outside force |
| YJV33 | YJLV33 | XLPE insulated fine steel wire armored PE sheathed power cable | Can be laid at indoor, underground .Cable can under take mechanism outside force |
