Single Core 12.7/22KV Medium Voltage Unarmoured Cable Application
The single core cables are designed for distribution of electrical power with nominal voltage Uo/U ranging from 3.8/6.6KV to 19/33KV and frequency 50Hz.
They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.
Single Core 12.7/22KV Medium Voltage Unarmoured Cable Standard
BS 6622, IEC60502-2, BS 7835 (LSZH Version)
Single Core 12.7/22KV Medium Voltage Unarmoured Cable Construction
Conductor: Plain annealed copper or aluminium wire. Copper conductors shall be stranded (class 2) and aluminium conductors shall be either solid or stranded (class 2).
Conductor Screen: Extruded layer of semi-conducting cross-linkable compound.
Insulation: cross-linked polyethylene compound XLPE or EPR.
Insulaton Screen: Extruded layer of semi-conducting cross-linkable compound is applied over the insulation.
Metallic Layer: copper tapes or a concentric layer of copper wires or a combination of tapes and wires.
Separation Sheath (for armoured cable): PVC, PE or LSZH.
Armour (for armoured cable): round aluminium wire.
Over Sheath: PVC or MDPE. LSZH can be offered as an option.
Single Core 12.7/22KV Medium Voltage Cable Dimensional Data
| Nom. Cross-Section Area |
|
Unarmoured Cables |
| Nom. Insulation Thickness |
Copper Wire Screen Area |
Nom. Sheath Thickness |
Approx. Overall Diameter |
Approx. Weight |
| CU |
AL |
| mm^2 |
mm |
mm^2 |
mm |
mm |
kg/km |
| 35 |
5.5 |
16 |
1.7 |
27.4 |
1100 |
800 |
| 50 |
5.5 |
16 |
1.8 |
28.8 |
1330 |
1010 |
| 70 |
5.5 |
16 |
1.9 |
30.6 |
1570 |
1130 |
| 95 |
5.5 |
16 |
1.9 |
32.2 |
1840 |
1240 |
| 120 |
5.5 |
16 |
2 |
33.8 |
2120 |
1360 |
| 150 |
5.5 |
25 |
2 |
35.5 |
2440 |
1500 |
| 185 |
5.5 |
25 |
2.1 |
37.2 |
2810 |
1640 |
| 240 |
5.5 |
25 |
2.2 |
39.9 |
3390 |
1860 |
| 300 |
5.5 |
25 |
2.2 |
41.9 |
3990 |
2110 |
| 400 |
5.5 |
35 |
2.3 |
45.8 |
5100 |
2490 |
| 500 |
5.5 |
35 |
2.4 |
48.4 |
6000 |
2900 |
| 630 |
5.5 |
35 |
2.5 |
53.6 |
7340 |
3340 |
