Aluminium Conductor Steel Supported

Why Choose Us?

Designed for high-capacity, long-span overhead transmission, ACSS conductors feature concentric aluminium strands wrapped around a steel core, delivering exceptional strength, elevated-temperature capability, and low sag for expanded ampacity.

Steel-Supported Strength

Galvanized steel core provides high tensile capacity while aluminium outer strands maintain conductivity.

Elevated-Temperature Rating

Operates continuously at up to 200 °C, boosting ampacity by up to 50 % over conventional ACSR.

Low Sag Performance

 High-modulus steel core and controlled aluminium alloy minimize elongation under load

Corrosion Resistance

ACSS conductors feature a steel core (exposed at ends) with protective aluminium layers to ensure long-term durability.

High Conductivity

ACSS conductors maintain strength and conductivity for long-span, heavy-load power transmission.

Extended Service Life

 High fatigue resistance ensures long-term reliability on critical transmission corridors.

Applications

  • Long-span transmission crossings (rivers, valleys)
  • High-temperature operation on existing lines to increase capacity
  • Renewable energy evacuation circuits (wind and solar farms)
  • Urban network reinforcement with limited tower modifications
  • Retrofit projects on aging infrastructure

Applicable Standards

  • IEC 61089 – Round-wire, concentric-lay overhead electrical conductors
  • ASTM B857 – Specification for aluminium‐alloy conductors, concentric‐lay strand
  • IEEE 738 – Standard for calculating temperature‐rise in conductors

Technical Specifications

Code Word Nominal Size (kcmil) Stranding (Al/St) DC Resistance @75 °C (Ω/1000 ft) Min. Tensile (lbs)
Partridge 266.8 26/7 0.0750 8,880
Junco 266.8 30/7 0.0748 11,700
Ostrich 300 26/7 0.680 10,000
Linnet 336.4 26/7 0.720 11,200
Oriole 336.4 30/7 0.741 14,800

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