Description
Application
Their aluminium wire armour (AWA) for single core cables and steel wire armour (SWA) for multicore cables provide robust mechanical protection making these MV cables suitable for direct burial in the ground. These armoured MV mains power cables are more commonly supplied with copper conductors but they are also available with aluminium conductors upon request to the same standard. The copper conductors are stranded (Class 2) whereas the aluminium conductors are compliant to the standard using both stranded and solid (Class 1) constructions.
Operating characteristics
1. Laying temperature: ≥0°C;
2. Cable conductor long-term allowable working temperature: PVC insulated ≤70°C, XLPE insulated ≤90°C;
3. Maximum operating temperature in case of short-circuit: PVC insulated ≤160°C, XLPE insulation ≤ 250°C;
4. Cable bending radius:
|
Item |
Single-core | Three-core | ||
| Non-armored | Armored | Non-armored | Armored | |
| Installation | 20D | 15D | 15D | 12D |
| Close to the terminal and connection box | 15D | 12D | 12D | 10D |
Note: D is the cable diameter
MV Cables Construction
| BS6622 | BS7835 | |
|---|---|---|
| Conductor | Class 2 stranded copper or Class 1 solid /Class 2 stranded aluminium | |
| Conductor Screen | Semi-conductive Cross-Linked Polyethylene (XLPE) | |
| Insulation | XLPE | |
| Insulation Screen | Semi-conductive XLPE | |
| Metallic Screen | Individual or overall copper tape | |
| Filler | Polyethylene Terephthalate (PET) fibres | |
| Separator | Binding Tape | |
| Bedding | Polyvinyl Chloride (PVC) | Low Smoke Zero Halogen (LSZH) compound |
| Armour | Single core cable: Aluminium Wire Armour (AWA) Multicore cable: Steel Wire Armour (SWA) |
|
| Sheath | PVC or Medium Density Polyethylene (MDPE) | LSZH |
Cable models, names, and laying conditions
| Model |
Name |
Laying Occasion |
|
| Copper core | Aluminum core | ||
| YJV | YJLV | XLPE insulated PVC sheathed power cable |
Laid indoors, and in tunnels and pipelines |
| YJY | YJLY | XLPE insulated PE sheathed power cable | |
| YJV22 | YJLV22 | XLPE insulated steel tape armored PVC sheathed power cable |
Adapt for buried laying, not suitable for in-pipe laying |
| YJV23 | YJLV23 | XLPE insulated steel tape armored PE sheathed power cable | |
| YJV32 | YJLV32 | XLPE insulated thin steel wire armored PVC sheathed power cable |
Laid on riverbeds of rivers or shallow water as connecting lines across rivers or petroleum/natural gas platforms, also used in land high drop areas. |
| YJV33 | YJLV33 | XLPE insulated thin steel wire armored PVC sheathed power cable | |
| YJV42 | YJLV42 | XLPE insulated thick steel wire armored PVC sheathed power cable | |
| YJV43 | YJLV43 | XLPE insulated thick steel wire armored PE sheathed power cable | |
Armoured 3-core cable with XLPE insualtion. Rated voltage 6/10 KV 6.35/11KV Cable Data
| Conductor |
Insulation thickness (mm) |
Copper tape screen (approximate) (mm) |
PVC bedding thickness (mm) |
Armored wire outer diameter (mm) |
Sheath thickness (mm) |
Outer diameter (approximate) (mm) |
Copper core cable weight (kg/km) |
Aluminum core cable weight (kg/km) |
||
| Cross sectional area (mm2) |
Structure |
Outer diameter (mm) | ||||||||
| 25 | Compact round | 6.0 | 3.4 | 0.1 | 1.3 | 2.5 | 2.5 | 48.0 | 4175 | 3703 |
| 35 | Compact round | 7.2 | 3.4 | 0.1 | 1.3 | 2.5 | 2.6 | 50.8 | 4733 | 4072 |
| 50 | Compact round | 8.4 | 3.4 | 0.1 | 1.4 | 2.5 | 2.7 | 53.8 | 5491 | 4547 |
| 70 | Compact round | 10.0 | 3.4 | 0.1 | 1.5 | 2.5 | 2.8 | 57.6 | 6446 | 5124 |
| 95 | Compact round | 11.7 | 3.4 | 0.1 | 1.5 | 2.5 | 2.9 | 61.5 | 7530 | 5737 |
| 120 | Compact round | 13.1 | 3.4 | 0.1 | 1.6 | 2.5 | 3.0 | 64.9 | 8628 | 6363 |
| 150 | Compact round | 14.6 | 3.4 | 0.1 | 1.6 | 2.5 | 3.1 | 68.3 | 9794 | 6963 |
| 185 | Compact round | 16.3 | 3.4 | 0.1 | 1.7 | 2.5 | 3.3 | 72.6 | 11326 | 7834 |
| 240 | Compact round | 18.5 | 3.4 | 0.1 | 1.8 | 3.15 | 3.5 | 79.2 | 14268 | 9737 |
| 300 | Compact round | 20.7 | 3.4 | 0.1 | 1.9 | 3.15 | 3.6 | 84.8 | 16641 | 10978 |
| 400 | Compact round | 23.8 | 3.4 | 0.1 | 2.0 | 3.15 | 3.9 | 92.3 | 20362 | 12811 |
| 500 | Compact round | 26.6 | 3.4 | 0.1 | 2.1 | 3.15 | 4.1 | 99.3 | 24203 | 14764 |
