HTLS Conductors

Why Choose Us?

HTLS (High Temperature Low Sag) conductors are advanced overhead transmission conductors designed to operate at elevated temperatures while maintaining significantly lower sag than conventional ACSR conductors. They are widely used for transmission line uprating, reconductoring, and increasing power transfer capacity without major tower modifications.

Corrosion-Resistant Core

Special Steel/ Invar Core/ Carbon Fibre Composite/ core clad in aluminium for superior protection against rust and pollutants.

High Tensile Strength

Special Steel/ Invar Core/ Carbon Fibre Composite/ core clad aluminium construction delivers low sag and excellent mechanical support under load.

  Optimized Conductivity

 Outer aluminium layers maintain low DC resistance, ensuring efficient power flow.

Reliable Load Capacity

Built for high tensile strength and durability, delivering reliable performance over long spans and heavy loads.

Wide Temperature Range

Reliable performance 280 °C, with rated short-circuit tolerance above 150 °C.

Extended Service Life

Thermal-resistant aluminium strands combined with advanced high-strength cores provide excellent resistance to thermal ageing, corrosion, and mechanical fatigue, ensuring long service to minimizing maintenance needs.

Applications

  • Transmission Line Uprating
  • Reconductoring Projects
  • Congested Power Corridors
  • Renewable Energy Evacuation Systems
  • EHV and UHV Transmission Networks

Applicable Standards

  • IEC 61089 – Round Wire Concentric Lay Overhead Electrical Stranded Conductors.
  • IEC 62219 – Formed Wire Compact Stranded Conductors for Overhead Electrical Purposes.
  • IEC 62420 – Characteristics of High-Temperature Low-Sag (HTLS) Conductors.
  • ASTM B609 – Aluminium Conductor Steel Supported (ACSS).
  • ASTM B851 – Concentric-Lay-Stranded Aluminium Conductors Utilizing Trapezoidal Wire.
  • ASTM B856 – Compact Concentric-Lay-Stranded Aluminium Conductors.
  • ASTM B857 – Specifications for ACSS/TW Conductors.
  • IS/BIS and Utility Specifications – Applicable in India based on customer and utility requirements.

Technical Specifications

Properties HAL (Hard drawn 1350 Al) Annealed Aluminium TAL (Thermal Alloy Al Zr) STAL (Super Thermal Alloy Al Zr)
Tensile Strength in MPa 160 60 160 160
Conductivity % IACS 61 63 60 60
Continuous Operating Temperature 80 250 150 210
Emergency Operating Temperature 120 180 240
Conductor ACSR TACSR STACIR
Ampacity X1 x1.5 X2

Related products

htls Conductor

Know More

Product Assistance & Specifications

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.