غیر فعال کتن ذخیره په ـدیسک
غیر فعال کتن ذخیره په ـدیسک
غیر فعال کتن ذخیره په ـدیسک
غیر فعال کتن ذخیره په ـدیسک
غیر فعال کتن ذخیره په ـدیسک
غیر فعال کتن ذخیره په ـدیسک
2025-09-03 1725
Aluminium armoured cables feature a multi-layered structure designed for protection and performance:
Conductor: Typically made from stranded plain annealed compacted circular copper or aluminium conductors. Aluminum conductors are often alloyed (e.g., AA-8000 series) to improve creep resistance, tensile strength, and flexibility 1710.
Insulation: Common materials include Cross-Linked Polyethylene (XLPE) or ethylene propylene rubber (EPR), offering heat resistance (up to 90°C) and electrical insulation 13.
Bedding: A Low Smoke Zero Halogen (LSZH) layer is often used to reduce smoke and toxic fumes during fires 13.
Armour: Aluminium Wire Armour (AWA) or interlocked aluminium alloy tape provides mechanical protection against crushing, impact, and corrosion. For single-core cables, aluminium armour is preferred to prevent magnetic buildup in AC circuits 136.
Sheath: The outer layer, often LSZH or PVC, adds further protection against moisture, chemicals, and abrasion 19.غیر فعال کتن ذخیره په ـدیسک
BS 6724: Specifies armoured power cables (600/1000V) with LSZH components, suitable for direct burial and hazardous environments 35.
IEC Standards: Include flame propagation (IEC 60332), smoke emission (IEC 61034), and halogen-free requirements (IEC 60754) 13.
BASEC Approval: Ens quality and safety compliance 1.
C22.2 No. 131 (Canada): Applicable to Teck 90 cables with interlocked aluminium armour 2.
Voltage Rating: Commonly 600/1000V, with higher ratings (e.g., up to 35kV) available for specific applications 39.
Temperature Range: Typically -25°C to 90°C (operating), but installation is recommended between 0°C and 40°C to avoid material brittleness or damage 1.
Bending Radius: Varies by cable size; e.g., 8× overall diameter for cables ≥25mm² 3. Aluminum armoured cables often have a smaller bending radius (e.g., 7× diameter) compared to copper cables, aiding installation 710.
Weight: Lighter than steel armoured cables, reducing load and installation costs 10.
Corrosion Resistance: Aluminum’s inherent oxide layer provides excellent resistance to environmental corrosion, especially in humid or chemical-rich settings 710.
Non-Magnetic Properties: Ideal for AC circuits, as aluminium armour prevents magnetic interference and reduces losses 1.
Lightweight: Significantly lighter than steel armour, easing transport, handling, and installation 10.
Flexibility: Aluminium armour offers greater flexibility and easier bending, often with a smaller bending radius than steel armour 10.
Cost-Effectiveness: Lower material and installation costs compared to copper or steel armoured alternatives. Aluminum cables can reduce installation expenses by 20–40% by eliminating the need for additional conduit or bridges 810.
غیر فعال کتن ذخیره په ـدیسک
Mechanical Strength: While suitable for most environments, aluminium armour may be less robust than steel in extreme impact scenarios 6.
Installation Precautions: Avoid installation at temperatures below 0°C to prevent sheath cracking 1. Proper glanding and grounding are essential for safety.
Connector Compatibility: Ensure connectors are designed for aluminium conductors to prevent galvanic corrosion or loosening over time 710.
Industrial Power Networks: Used in factories, plants, and machinery due to mechanical protection and durability 13.
Direct Burial: Suitable for underground installations thanks to corrosion resistance and armour protection 39.
Hazardous Environments: LSZH sheathing makes it ideal for tunnels, mines, and areas where fire safety and low toxin emissions are critical 39.
Buildings and Infrastructure: Commonly used in commercial complexes, sports stadiums, and high-rises for power distribution 910.
Long-Span Installations: Aluminum armoured cables can support longer spans (up to 4000 meters) due to their lightweight and high tensile strength, making them suitable for bridges and large venues 810.
| Feature | Aluminium Armoured Cable | Steel Armoured Cable | Copper Armoured Cable |
|---|---|---|---|
| Weight | Lightweight | Heavy | Very Heavy |
| Corrosion Resistance | High | Moderate (requires galvanization) | High |
| Cost | Low | Moderate | High |
| Magnetic Properties | Non-magnetic | Magnetic | Non-magnetic |
| Bending Flexibility | High (e.g., 7× diameter) | Lower (e.g., 10–12× diameter) | Moderate |
| Typical Applications | Industrial, direct burial | Heavy-duty industrial | High-performance circuits |
Bending: Adhere to minimum bending radius guidelines to avoid damaging the armour or insulation 3.
Gland Selection: Use glands designed for aluminium armour (e.g., size 25 gland for 95mm² cable) to ensure secure termination 1.
غیر فعال کتن ذخیره په ـدیسک
Corrosion Protection: In highly corrosive environments (e.g., alkaline soil), additional protective coatings or insulation may be needed 7.
Testing: Perform regular insulation resistance and continuity tests to ensure long-term reliability.
When purchasing aluminium armoured cables, ensure compliance with relevant standards (e.g., BS 6724, IEC) and check for certifications like BASEC. Suppliers like Superlec Direct 1 and Caledonian Cables 3 offer products with detailed specifications. For high-voltage needs (e.g., up to 35kV), specialized cables like YJHLV82 (ACWU90) are available 9.
Aluminium armoured cable is a versatile, cost-effective solution for demanding electrical installations, offering a blend of mechanical protection, corrosion resistance, and flexibility. Its lightweight nature and non-magnetic properties make it particularly suitable for AC circuits, industrial settings, and long-span applications. However, proper installation and compatibility checks are crucial for optimal performance. When selected and installed correctly, it provides a reliable and durable power distribution medium 1310.
