Product Introduction: 64/110kV XLPE Aluminum Sheath EHV Power Cable
This 64/110kV XLPE Aluminum Sheath EHV Power Cable is engineered for robust and reliable bulk power transmission in modern power grid infrastructure. Designed to IEC 60840 standards, its core utilizes XLPE (Cross-Linked Polyethylene) insulation for superior electrical and thermal performance. The key protective layer—a seamless corrugated aluminum sheath—provides an excellent longitudinal water barrier and superior mechanical protection, making it ideal for underground transmission and demanding applications like grid interconnections and offshore wind farm export cables. This extra high voltage cable is the cornerstone solution for efficient and secure utility-grade power transmission.
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Our 66–500kV XLPE insulated power cables are manufactured, tested, and certified in strict accordance with the two most important international standards for high‑voltage (HV) and extra‑high‑voltage (EHV) power transmission.
| Standard | Voltage Range | Application Scope |
|---|---|---|
| IEC 60840:2011 | 30 kV (Um=36 kV) up to 150 kV (Um=170 kV) | Extruded insulation cables and accessories for HV underground and submarine transmission |
| IEC 62067:2011 | Above 150 kV (Um=170 kV) up to 500 kV (Um=550 kV) | Extruded insulation cables for EHV power links, offshore wind farms, and long‑distance grid interconnections |
✅ Why it matters: IEC certification guarantees global acceptance, reliable long‑term performance, and compatibility with international cable accessories and termination systems.
East Energy Electrical Engineering (4E) offers a wide variety of HV/EHV cable designs to provide the most economic and technically optimized solutions for:
Underground power transmission
Submarine cable links
Tunnel installations (metro, road, utility corridors)
Below is the complete list of available constructions. Each is built around a corrugated aluminum sheath (CAS) for superior mechanical protection and water tightness.
| Type | Name | Best Suited For |
|---|---|---|
| CU/XLPE/CAS/PVC | Copper Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PVC Sheathed | Dry or moderately wet conditions |
| CU/XLPE/CAS/LWR/PVC | Copper Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PVC Sheathed, Longitudinal Water Resistant | Wet or submerged environments |
| CU/XLPE/CAS/PE | Copper Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PE Sheathed | Chemical and moisture resistance |
| CU/XLPE/CAS/LWR/PE | Copper Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PE Sheathed, Longitudinal Water Resistant | Demanding applications requiring both PE sheath + water blocking |
| AL/XLPE/CAS/PVC | Aluminum Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PVC Sheathed | Cost‑effective HV/EHV transmission |
| AL/XLPE/CAS/LWR/PVC | Aluminum Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PVC Sheathed, Longitudinal Water Resistant | Wet environments with aluminum conductor |
| AL/XLPE/CAS/PE | Aluminum Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PE Sheathed | Corrosion resistance + aluminum conductor |
| AL/XLPE/CAS/LWR/PE | Aluminum Conductor, XLPE Insulated, Corrugated Aluminum Sheath, PE Sheathed, Longitudinal Water Resistant | Full protection: aluminum, PE sheath, water blocking |
The cable conductors can be made of copper or aluminum. The choice depends on your project’s current carrying capacity requirements, budget, and mechanical strength needs.
| Conductor Material | Advantages |
|---|---|
| Copper | Higher conductivity, smaller conductor size, greater mechanical strength |
| Aluminum | Lighter weight, lower material cost, excellent conductivity |
✅ 4E offers both. We help you select the optimal conductor based on your specific project economics.
| Feature | Technical Benefit |
|---|---|
| IEC 60840 & IEC 62067 Compliant | Fully certified for international HV/EHV projects – no risk of non‑compliance |
| Corrugated Aluminum Sheath (CAS) | Provides mechanical protection, water tightness, and high short‑circuit capability |
| XLPE Insulation | High dielectric strength, low dielectric losses, excellent thermal performance (90°C continuous, 250°C short circuit) |
| Longitudinal Water Resistance (LWR) | Optional water blocking for submarine, underground, and wet tunnel installations |
| PE or PVC Outer Sheath | PE for chemical/moisture resistance; PVC for general outdoor/underground use |
| Copper or Aluminum Conductor | Flexible selection based on project needs |
| Voltage Range | 66 kV, 110 kV, 132 kV, 220 kV, 330 kV, 400 kV, 500 kV |
| Application | Typical Use Case |
|---|---|
| Underground Power Transmission | Urban grid connections, substation feeders, industrial parks |
| Submarine Cable Links | Offshore wind farms, island connections, cross‑sea power links |
| Tunnel Installations | Metro systems, road tunnels, utility corridors |
| Overhead to Underground Conversion | Aesthetic and environmental improvement projects |
| Renewable Energy Integration | Solar and wind farm collection and transmission |
| Power Plant Connections | Generator step‑up (GSU) to transmission grid |
| Layer | Material | Function |
|---|---|---|
| Conductor | Copper or aluminum (segmental or round stranded) | High conductivity, low resistance |
| Conductor Screen | Extruded semi‑conducting XLPE | Electric field uniformity |
| Insulation | XLPE (cross‑linked polyethylene) | High dielectric strength, thermal stability |
| Insulation Screen | Extruded semi‑conducting XLPE | Electric field control |
| Water Swellable Tape (optional) | Optional for longitudinal water resistance | Moisture blocking |
| Metallic Sheath | Corrugated aluminum (CAS) | Mechanical protection, water tightness, short‑circuit withstand |
| Outer Sheath | PVC or PE | Environmental protection, corrosion resistance |
| Parameter | Value |
|---|---|
| Voltage Range | 66 kV, 110 kV, 132 kV, 220 kV, 330 kV, 400 kV, 500 kV |
| Conductor Material | Copper or aluminum |
| Insulation | XLPE (cross‑linked polyethylene) |
| Metallic Sheath | Corrugated aluminum (CAS) |
| Water Blocking | Optional longitudinal water resistant (LWR) |
| Outer Sheath | PVC or PE |
| Partial Discharge | ≤ 5 pC at 1.5 U₀ |
| Operating Temperature | 90°C (normal), 250°C (short circuit) |
| Standards | IEC 60840:2011, IEC 62067:2011 |
| Benefit | Why It Matters |
|---|---|
| IEC Certified | Fully compliant with IEC 60840 and IEC 62067 – no compliance risk |
| Wide Voltage Range | From 66 kV up to 500 kV – one supplier for all your HV/EHV needs |
| Flexible Construction | Copper or aluminum conductor; PVC or PE sheath; with or without water blocking |
| Corrugated Aluminum Sheath | Superior mechanical protection and water tightness compared to smooth sheath |
| Global Acceptance | Suitable for international grid projects, offshore wind farms, and submarine interconnectors |
| Customizable | Conductor material, sheath type, water blocking, and length available upon request |
