High & Extra High Voltage Cables (HV / EHV >33kV)
High and Extra High Voltage (HV/EHV) cables designed for long-distance power transmission or connecting high/medium voltage substations. These cables feature multi-layer construction, advanced XLPE insulation, and semi-conductive metallic screens for uniform electric field distribution and partial discharge mitigation. They offer advanced mechanical protection, moisture resistance, and energy dissipation systems. Ideal for main transmission lines between power plants and substations, as well as HV marine cable applications.
High and Extra High Voltage (HV/EHV) cables designed for long-distance power transmission or connecting high/medium voltage substations. These cables feature multi-layer construction, advanced XLPE insulation, and semi-conductive metallic screens for uniform electric field distribution and partial discharge mitigation. They offer advanced mechanical protection, moisture resistance, and energy dissipation systems. Ideal for main transmission lines between power plants and substations, as well as HV marine cable applications.
| Property |
Typical Value |
|---|---|
| Conductor |
Copper (Cu) or Aluminium (Al) solid or stranded |
| Conductor Purity |
High |
| Insulation |
Advanced XLPE |
| Common Cross Sections |
95 mm² up to several hundred mm² depending on capacity |
| Semi-Conductive Layers |
Present for electric field management |
| Rated Voltage |
66kV, 132kV, 230kV, 400kV (special designs as required) |
| Metallic Screen/Shield |
Optional |
| Outer Sheath |
Additional protection PVC / HDPE / LSZH |
| Optional Armour |
SWA |
| Operating Temperature |
90°C continuous or higher depending on design |
| Insulation Colors |
Multi-color for core identification |
| Additional Properties |
Electric field management, moisture resistance, energy dissipation systems |
| Special Tests |
Partial Discharge, Tan Delta, Lightning Impulse, Aging Tests |
- Main transmission lines between power plants and substations.
- HV marine cables for underwater power transmission.
- Long-distance power networks in cities or industrial areas.
- IEC 60840, IEC 62067 لمواصفات HV و EHV.
- اختبارات التفريغ الجزئي (Partial Discharge).
- اختبار Tan Delta، Lightning Impulse، Aging Tests.
- جودة وفقًا لمواصفات شركات HV المتخصصة Power and Cables+1.
- Standards and Testing (English)
- IEC 60840, IEC 62067 (HV & EHV cables).
- Partial Discharge testing.
- Tan Delta, Lightning Impulse, and Aging Tests.
- Quality assurance according to specialized HV companies (Power and Cables+1).
