All Aluminum Alloy Conductor (AAAC) is a high-strength, bare overhead conductor manufactured from concentric-lay-stranded aluminum-magnesium-silicon alloy wires (typically 6201 series alloy). Offering an excellent balance of mechanical strength, electrical conductivity, and corrosion resistance, AAAC has become the preferred choice for modern overhead transmission and distribution lines where traditional ACSR or AAC conductors may fall short in performance or longevity.
Cross-section of AAAC conductor showing concentric stranding of 6201 alloy wires
Main Applications
All Aluminum Alloy Conductors are widely deployed in:
- High-voltage and medium-voltage overhead transmission lines
- Urban and rural distribution networks
- Coastal, industrial, and heavily polluted environments where corrosion resistance is critical
- Long-span crossings and areas with high mechanical loading requirements
Key Advantages
- Superior Corrosion Resistance: Unlike steel-reinforced conductors, AAAC contains no steel core, making it highly resistant to atmospheric corrosion and ideal for aggressive environments.
- High Strength-to-Weight Ratio: Allows longer spans, reduced tower loading, and lower overall installation costs.
- Optimized Sag Performance: Lower thermal expansion and creep characteristics result in reduced sag under high operating temperatures and heavy ice/wind loads.
- Lower Power Losses: Excellent conductivity combined with optimized stranding minimizes I²R losses compared to equivalent ACSR conductors.
- Long Service Life: Excellent fatigue resistance and mechanical stability ensure decades of reliable performance with minimal maintenance.
Construction
AAAC conductors consist of bare, concentrically stranded aluminum alloy wires. Stranding is arranged in successive layers with opposite lay directions between layers for maximum stability and flexibility. The alloy composition provides higher tensile strength than pure aluminum while maintaining good electrical properties.
International Standards
Manufactured in full compliance with:
- IEC 61089
- ASTM B399
- BS 3242
- DIN 48201/6
- AS 1531
Technical Parameters (IEC 61089 – Representative A2 Conductor Sizes)
| Nominal Area (mm²) | No. of Wires | Overall Diameter (mm) | Linear Density (kg/km) | Breaking Load (kN) | DC Resistance at 20°C (Ω/km) |
|---|
| 25 | 7 | 6.86 | 78.7 | 8.49 | 1.1453 |
| 50 | 7 | 8.68 | 125.9 | 13.58 | 0.7158 |
| 100 | 19 | 13.9 | 316.3 | 33.95 | 0.2877 |
| 240 | 19 | 22.0 | 790.8 | 84.88 | 0.1151 |
| 400 | 37 | 27.9 | 1,268.4 | 135.81 | 0.0721 |
| 630 | 61 | 35.0 | 2,000.7 | 213.90 | 0.0458 |
Full range available from 16 mm² to 1,250 mm². A3 grade conductors offer slightly higher breaking loads with comparable electrical performance. Custom configurations available upon request.
AAAC conductors installed on overhead transmission towers in a real-world power line project.
International Standards & Quality
Manufactured in full compliance with:
- IEC 61089
- ASTM B399
- BS 3242
- DIN 48201/6
- AS 1531
Every production batch undergoes rigorous testing for tensile strength, conductivity, elongation, and corrosion performance to guarantee consistent quality and long-term reliability.
Packaging & Supply
Supplied on high-quality wooden drums, plywood drums, or steel drums to ensure safe transportation, storage, and protection during handling.
Why Cable Manufacturers and Utilities Choose RLB AAAC Conductors
As a trusted long-term supplier of cable raw materials and complete transmission solutions, RLB delivers AAAC conductors that combine proven 6201 alloy technology with strict quality control. Whether for new installations, capacity upgrades, or projects in harsh environments, our AAAC provides reliable performance, cost-effectiveness, and outstanding value.
Inquiry Now to discuss technical specifications, custom conductor designs, full technical data sheets, or complete overhead line solutions tailored to your project requirements. Our team offers professional consultation and supports long-term partnership.
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