IS 3444 covers AAAC (All Aluminium Alloy Conductor) for overhead power lines. AAAC has better strength-to-weight ratio than ACSR, no steel core corrosion risk, and is preferred for coastal and polluted environments.
Specification for aluminium alloy (AAAC) conductors for overhead power transmission and distribution lines.
Key Values
Alloy6201 equivalent (Al-Mg-Si)
UTSMin 295 MPa
ConductivityMin 52.5% IACS
Practical Notes
! AAAC is replacing ACSR in many applications — no steel core means no bimetallic corrosion.
! Better sag performance than AAC (all aluminium conductor) due to higher strength.
! Preferred for coastal areas where ACSR steel core corrodes from salt spray.