IS 7098 (Part 2)
HT power cables
XLPE insulated aluminium cables from 3.3 kV to 33 kV.
3.3 kV to 33 kV
Specification
- Conductor
- Compact circular aluminium
- Insulation
- XLPE with semiconducting screens
- Metallic screen
- Copper tape
- Armour
- Aluminium (single core), GI flat strip (three core)
- Outer sheath
- PVC
- Standard
- IS 7098 (Part 2)
Construction
What it is and what it is for
High-tension cables with stranded compact circular aluminium conductors, an extruded semiconducting conductor screen, XLPE insulation and an extruded semiconducting insulation screen with copper tape. They are made to IS 7098 (Part 2).
Single-core cables are armoured with aluminium flat strip or round wire. Three-core cables are laid up, inner-sheathed and armoured with galvanised steel flat strip. Both are finished with an overall PVC sheath.
Voltage grades are given for earthed (E) and unearthed (UE) systems.
- Substation and transformer connections
- Industrial plant HT distribution
- Solar and wind farm collection networks
- Utility feeders
Sizes and packing
| Voltage grade | Sizes (sq mm) | Armour |
|---|---|---|
| 3.3 kV (UE) / 6.6 kV (E) | 240 – 1000 | Al flat strip or round wire |
| 6.6 kV (UE) / 11 kV (E) | 240 – 1000 | Al flat strip or round wire |
| 11 kV (UE) | 240 – 1000 | Al flat strip or round wire |
| 22 kV (E) | 240 – 1000 | Al flat strip or round wire |
| 33 kV (E) | 240 – 1000 | Al flat strip or round wire |
| 33 kV (UE) | 240 – 1000 | Al flat strip or round wire |
| Voltage grade | Sizes (sq mm) |
|---|---|
| 3.3 kV (UE) / 6.6 kV (E) | 70 – 400 |
| 6.6 kV (UE) / 11 kV (E) | 35 – 400 |
| 11 kV (UE) | 95 – 400 |
| 22 kV (E) | 95 – 400 |
| 33 kV (E) | 95 – 400 |
| 33 kV (UE) | 150 – 400 |
Options: FR-LSH inner and outer sheaths, higher oxygen index, extruded inner sheath, round-wire armouring.
Related cables
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