Aluminium Conductor Steel Reinforced (ACSR)

Why Choose Us?

Combining the high conductivity of aluminium with the tensile strength of a galvanized steel core, our ACSR conductors deliver low-sag performance and mechanical resilience, ideal for everything from local distribution to long-span transmission lines.

Optimal Strength-to-Weight

Aluminium strands helically stranded around a steel core ensure superior mechanical support.

High Conductivity

 Pure aluminium outer layers provide excellent electrical performance and low DC resistance.

Low Sag & Creep Resistance

 Steel reinforcement and controlled alloy composition minimize elongation under load.

Durable & Weather-Resistant

 Galvanized steel core resists corrosion; aluminium sheath endures UV, moisture, and industrial pollutants.

Wide Temperature Range

Maintains performance from +90 °C, with short-circuit tolerance above 150 °C.

Versatile Sizes

Available from small-scale “Weasel” conductors to heavy-duty “Lapwing upto 800 KV”— custom lengths on request.

Applications

  • Overhead transmission and distribution in urban and rural grids
  • Long-span crossings (rivers, valleys) where tower loading is critical
  • Railway electrification and tramway feeders
  • Industrial power feeds and upgrading existing lines for higher loads

Applicable Standards

  • IS 398 Part 2 – ACSR with galvanized steel core for overhead lines
  • IEC 61089 – Round-wire, concentric-lay overhead electrical conductors
  • ASTM B232 – Specification for ACSR galvanized steel core
  • BS EN 50183 – ACSR with galvanized steel core for overhead lines

Technical Specifications

Nominal Aluminium Area (mm²) Stranding and Wire Diameter Aluminium Stranding and Wire Diameter Steel Sectional Area of Aluminium (mm²) Total Sectional Area (mm²) Approx Overall Diameter (mm) Approx Mass (kg/km) Calculated Resistance at 20°C Max (Ω/km) Approx Breaking Load Min (kN)
520 34/3.53 7/3.53 528.5 597 31.77 2004 0.055 52 161.2
560 42/4.13 7/2.13 562.7 591.7 31.68 1787 0.051 99 120.16
690 42/4.57 7/2.54 688.9 724.4 35.04 2187 0.042 42 146.87
Available Sizes & Ratings
Full ACSR range spans 30 kcmil to 3,000 kcmil with numerous intermediate sizes and custom stranding configurations available

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