Armoured Power Cable
Built to survive the toughest environments, Farwalk’s Armoured Power Cables provide ultimate mechanical protection for underground and industrial power networks. Featuring Steel Wire Armour (SWA), Steel Tape Armour (STA), or Aluminum Wire Armour (AWA), these cables prevent crush damage, rodent attacks, and tensile stress while ensuring uninterrupted power delivery.
Armoured Power Cables are the undisputed standard for direct burial and heavy-duty industrial applications. By incorporating a robust metallic armour layer beneath the outer sheath, these cables eliminate the need for protective conduits in many underground installations. Available in Low Voltage (0.6/1kV) and Medium Voltage (up to 33kV) ratings, our armoured series utilizes premium XLPE or PVC insulation to balance electrical performance with extreme physical durability.
• Underground Direct Burial: Main power networks requiring no external conduit protection.
• Heavy Industrial Plants: Power feeds in mining, petrochemical, and manufacturing facilities where mechanical damage risk is high.
• Infrastructure & Civil Engineering: Railway networks, tunnel wiring, and bridge power links.
• Renewable Energy: Buried collection circuits for solar PV arrays and wind farms.
• British Standards: BS 5467 (SWA PVC), BS 6724 (SWA LSZH)
• International: IEC 60502-1 (LV), IEC 60502-2 (MV)
• Chinese Standards: GB/T 12706 (YJV22 STA, YJV32 SWA)
*Note: Fire-resistant (BS 6387) and localized standards available upon request.*
1. Conductor: Class 2 stranded Copper (Cu) or Aluminum (Al).
2. Insulation: XLPE (90°C) for superior thermal capacity or PVC (70°C).
3. Inner Bedding: Extruded PVC or LSZH to provide a smooth bed for the armour.
4. Armour Layer:
– SWA (Steel Wire Armour): High tensile strength for multi-core cables.
– STA (Steel Tape Armour): High crush resistance for multi-core cables.
– AWA (Aluminum Wire Armour): Non-magnetic protection for single-core cables.
5. Outer Sheath: UV-resistant PVC (ST2), PE, or Flame-Retardant LSZH.
• Supreme Mechanical Defense: The metallic armour layer acts as an impenetrable shield against rock strikes, heavy vehicle loads, and rodent/termite damage.
• High Pulling Tension (SWA): Steel wires allow the cable to be pulled through complex vertical shafts or unstable terrain without conductor elongation.
• Cost-Effective Installation: Can be laid directly into trenches, significantly reducing the labor and material costs of installing ducting or piping.
• Electrical Grounding: The metallic armour can often be utilized as a protective earth (PE) conductor or earth fault return path.
• Precision Armouring Process: Our planetary stranding machines ensure 100% uniform armour wire distribution, preventing ‘bird-caging’ during installation bending.
• Comprehensive Testing: Every batch is subjected to rigorous impact, tensile, and electrical withstand tests to guarantee standard compliance.
• Matrix Flexibility: We stock and manufacture all combinations—from 1.5mm² 2-core STA to massive 400mm² 4-core SWA.
• Tailored Sheathing: Options include anti-termite additives, low-temperature PVC (-40°C), and zero-halogen compounds for maximum safety.
Comparison Logic: Choosing the Right Armour (SWA vs. STA vs. AWA)
| Armour Type | Key Strength | Limitation | Best Application |
| SWA (Steel Wire Armour) | High Tensile Strength, excellent for pulling | Heavier, larger bend radius | Direct burial, vertical shafts, suspended networks |
| STA (Steel Tape Armour) | High Crush Resistance, excellent rodent proofing | Low tensile strength (cannot handle heavy pulling) | Flat direct burial, areas with severe rodent issues |
| AWA (Aluminum Wire Armour) | Non-magnetic (Prevents eddy currents) | Only applicable to Single Core | Single-core AC power networks (LV & MV) |
Global Engineering & Project Support
Our technical team is ready to discuss customized cable solutions, compliance documentation, and optimized supply chain strategies for your international projects.
REQUEST A QUOTE