Why is aluminum conductor steel reinforced (ACSR) the preferred choice for overhead lines?

2025-08-13

ACSR conductors are a perfect example of engineering innovation, combining the best properties of two materials. An ACSR conductor consists of a central steel core for strength, surrounded by outer strands of aluminum for conductivity.

This composite design provides several key advantages:

  • High Strength-to-Weight Ratio: The steel core provides exceptional mechanical strength, allowing for longer spans and reducing the number of support towers required.

  • Cost-Effectiveness: Using aluminum for the conducting part of the cable is much cheaper than using copper.

  • Excellent Conductivity: While not as conductive as copper, aluminum's conductivity is more than sufficient for high-voltage transmission, especially when a larger diameter is used, which helps reduce the corona effect.

Our hydraulic puller and OHTLstringingequipment.com/Hydraulic-Conductor-Tensioners.html target='_blank'>Tensioner machines are specifically designed to handle the heavy tensioning required for ACSR conductors, ensuring a safe and precise installation that meets all design specifications.

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