64/110kv HV High Voltage Power Cable CU/XLPE/CWS/STA 123kV 300-2500mm Power Cable

APPLICATION

The cable is suitable for use in high voltage transmission networks, in systems of rated voltages from 110 kV grade up to and including 115 kV grade.

CONSTRUCTION

• Conductor: Stranded circular or segmental (Milliken) compacted copper conductor 
• Conductor shield:Semi-conductive shield 
• Insulation: Cross-Linked Polyethylene(XLPE) 
• Insulation shield: Semi-conductive shield 
• Metal shielding layer:Corrugated Aluminum Sheath or Lead Sheath or Aluminum Laminated Tape
• Binder tape:Non-woven fabrics 
• Metal Laminate Foil: Aluminum laminated tape
• Outer sheath: PE

STANDARD 

IEC 60840 IEC 62067

CHARACTERISTIC 

• Voltage Rating Uo/U: 64/110kV(123kV) 
• ‌Continuous Operation: ‌+90°C‌ Conductor Temp 
• ‌Emergency Overload‌:‌+105°C‌ Conductor Temp (≤100 hrs/year, ≤500 hrs/lifetime)
• Short Circuit:‌‌+250°C‌ Conductor Temp (for calculated duration, typically 1-5s) 
• ‌Installation‌ ‌≥ 0°C‌
• ‌Ambient Operation ‌≥ -40°C

PARAMETERS

OUR FACTORY

PROJECT

APPLICATION

FAQ

1.What are the typical applications for 64/110kV cables?

• Substation interconnections (GIS to transformer bays)
• Underground transmission networks in urban areas
• Power distribution for industrial complexes requiring high-voltage input

2.How does corrugated steel sheath (CWS) enhance cable performance?

• Provides mechanical protection against rodent damage
• Improves water resistance in underground or submarine installations
• Maintains structural integrity under thermal expansion (operating temp: -25°C to +90°C)

3. What bending radius should be maintained during installation?

• Minimum bending radius: 20 times outer diameter (for single-core cables)
• For 2500mm² cable (OD≈120mm): ≥2.4m to avoid conductor deformation

4. How are 64/110kV cables terminated?

• GIS terminals (gas-insulated switchgear) for substations
• Outdoor porcelain or composite terminals with stress cones
• Prefabricated joints for field splicing (waterproof design)

5.How does XLPE insulation compare to oil-paper insulation?

• Higher dielectric strength (≥200kV/mm vs 150kV/mm)
• No oil maintenance required
• Lighter weight (30% reduction for same voltage rating)

6. What are the storage requirements for 64/110kV cables?

• Reels stored upright with anti-roll blocks
• Temperature: -15°C to +40°C
• Shelf life: ≤12 months (UV-protected wrapping needed for outdoor storage)

7.How to calculate the ampacity of 2500mm² 64/110kV cable?

• In air: ≈1200A (ambient 30°C, soil thermal resistivity 1.2K·m/W)
• In duct: ≈800A (grouped with 3 other cables)
• Reference: IEC 60287-1-1 with derating for CWS sheath