1. Conductor:

• Stranded annealed copper (CU) – Class 2 circular or shaped.

• Optional: Longitudinal water blocking or copper tape shielding.

2. Conductor Screen (Semiconductive):

• Bonded XLPE-based semi-conducting layer to eliminate air voids and homogenize electrical stress.

3. XLPE Insulation (Main Insulation):

• Dry-cured, super-clean XLPE with low dissipation factor.

• Thickness per IEC 60840 (typically ≥16mm for 110kV).

• Rated temperature: 90°C (normal), 250°C (short circuit).

4. Insulation Screen:

• Strippable or bonded semi-conducting layer + swelling tape.

5. Metallic Screen (Copper Wire or Tape):

• Helically applied copper wires + counter-helical copper tape.

• Earth fault capacity designed per system requirements.

6. PVC Inner Sheath (Bedding):

• Extruded PVC protecting the metallic screen and providing a stable base for armor.

7. SWA (Steel Wire Armor):

• Galvanized round steel wires.

• Protection against rodents, rocks, and mechanical impact for direct burial.

• Also serves as a continuous earth path.

8. PVC Outer Sheath (Overseal):

• Black UV-stabilized PVC – ST2 or ST7 (low smoke & halogen-free options available).

• Printed with voltage, standard, length markers, and manufacturer code.

Why Choose This 110kV CU/XLPE/SWA Cable?

1.High Power Transfer Capacity:

   Copper conductor combined with XLPE insulation allows up to 1000A+ continuous current (depending on installation) with minimal dielectric loss.

2. Robust Steel Wire Armor (SWA)

   Withstands high pulling tension during installation (≥15 kN per core) and resists external compression in underground or submarine approaches.

3. IEC 60840 Certified

    Fully type-tested for partial discharge (≤5pC at 2U₀), impulse voltage (550 kVp), and long-term aging. Suitable for 30+ year service life.

4. Zero Water Treeing (XLPE Grade)

   Super-smooth insulation suppresses water tree growth, ensuring reliability in wet soil or high humidity tunnels.

5. Fire Safety Compliance

   PVC outer sheath meets IEC 60332-1 for flame retardancy. LSZH (Low Smoke Zero Halogen) outer sheath optional for indoor/urban substations.

Typical Applications

• Primary Grid Transmission: 110kV substation to 110/33kV or 110/20kV transformers.
• Industrial Heavy Feeders: Steel plants, data centers (N+N redundant feeds), oil & gas facilities.
• Wind & Solar Parks: Collector lines to onshore grid step-up stations.
• Urban Infrastructure: Metro railway power supply, airport high voltage loops.
• Direct Burial & Cable Tunnels: SWA eliminates need for additional steel conduits.

Performance Data (Typical – Single Core, Copper 1200mm²)

Note: Values vary with cross-section. Please consult our engineers for exact sizing.

Customization Options

• Conductor size: 240mm² up to 2500mm² (copper or aluminum available).

• Armor type: SWA (standard), double tape armor, or non-magnetic armor for single-core.

• Outer sheath: PVC, LSZH (HFFR), or polyethylene (PE) for extra moisture barrier.

• Fiber optic integration: Built-in OPGW or temperature sensing (DTS) fibers.

• Section length: Continuous lengths up to 1500m per drum (depending on shipping).

Quality Assurance & Certification

Factory Audit Ready: We provide full traceability from conductor drawing to HV partial discharge test.

Related Products You May Need

• 110kV Premoulded Slip-on Joints (IEC 60840) – For cable route splicing.

• HV Outdoor Termination (Composite or Porcelain) – For substation gantry entry.

• Cable Cleats (Short-circuit rated) – For SWA cable fixing per IEC 61914.