Aluminum Conductor Steel Reinforced (ACSR) is one of the most widely used bare overhead conductors in power transmission and distribution networks worldwide. It consists of one or more layers of high-conductivity aluminum strands helically wrapped around a high-strength galvanized or aluminum-clad steel core. The aluminum provides excellent electrical conductivity, while the steel core delivers superior mechanical strength and tensile capacity, making ACSR the preferred choice for long-span, high-reliability overhead lines.
Main Applications
ACSR conductors are extensively deployed in:
- High-voltage and extra-high-voltage overhead transmission lines
- Medium-voltage distribution networks in urban and rural areas
- Long-span crossings, river crossings, and heavy ice/wind load zones
- Capacity upgrades of existing power grids
- Coastal, industrial, and polluted environments where mechanical robustness is essential
Construction
The conductor features a classic concentric-lay stranded design:
- Outer aluminum strands: 1350-H19 grade aluminum for high conductivity and corrosion resistance
- Inner steel core: One or more layers of galvanized steel wires providing mechanical reinforcement and tensile strength
Common stranding configurations include 6/1, 26/7, 54/7, 54/19, and larger designs, allowing precise balance between conductivity and mechanical performance.
Key Advantages
- High Tensile Strength: The steel core enables longer spans, reduced sag, and higher wind/ice loading capability
- Excellent Conductivity: Optimized aluminum content delivers low electrical resistance and efficient power transmission
- Proven Reliability: Decades of field performance under extreme weather and dynamic loads
- Uygun Maliyetli Çözüm: Balanced material usage offers outstanding value for most overhead line projects
- Versatile Design: Available in a wide range of sizes and steel/aluminum ratios to meet specific project requirements
Manufacturing Standards
Produced in full compliance with major international standards:
- ASTM B 232
- BS 215 Part 2
- DIN 48204
- DIN 48201/8
- AS 3607-1989
Technical Specifications (ASTM B232 – Representative Sizes)
Full product range covers small distribution sizes (Swan, Turkey) to large transmission conductors (Bluebird, Thrasher, etc.).
Ambalajlama
ACSR conductors are supplied on robust wooden drums, plywood drums, or steel drums to ensure safe transportation, storage, and on-site handling.
Aluminum Conductor Steel Reinforced (ACSR) remains the backbone of global overhead power infrastructure due to its proven mechanical strength, reliable electrical performance, and economic advantages. It continues to be the go-to solution for new line construction and capacity upgrades in modern power grids.
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