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STACIR Conductor

STACIR Conductors are very similar in construction to a conventional ACSR conductor but the EC Grade Aluminium wires are replaced with Heat Resistant Aluminium Zirconium Alloy (generally known as STAL). The center wire or wires are made up of Aluminium clad invar and the outer layer or layers are made up of thermal resistant Aluminium alloy. INVAR : Special Fe/Ni Alloy with very low coefficient of linear expansion. Zirconium doped aluminum alloy maintain the electrical and mechanical properties at elevated temperatures, thus making these conductors cost effective with enhanced capacity.


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G Trans STACIR/AW is used to up-rate the existing transmission line by simply replacing the existing conductor without tower modification.


IEC, ASTM and Gupta Power Specification.

Construction of the Conductor

Outer Conductive wire: Super thermal aluminium alloy wire which can continuously operate up to 210°C.

Inner Core wire: Aluminium Clad Invar wire (Invar is a metal which is having 36% Ni in Steel)

Special Features:

Double Amapacity compared to ACSR

Low Sag

High Corrosion resistance


For Uprating Lines :

  • Double Ampacity
  • No modification/Reinforcement of Towers
  • Cost effective

For New Lines :

  • Lesser Tower height

Number of towers can be minimized


Low conductor Thermal Expansion Coefficient 

Work  at High Temperature upto 210°C  without any loss of Strength 

Easy installation

Excellent resistance to corrosion


technical details

IEC 62004 , IEC 62774; Generally to IEC 61089 & Other Standard


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