OAPIL

AAAC – All Aluminium Alloy Conductors

 

AAAC, or All Aluminium Alloy Conductor, is used as a bare overhead conductor for power transmission and distribution lines. Its advantages over its counterparts, AAC and ACSR, are that it has a higher mechanical resistance than AAC, and better corrosion resistance than ACSR. Additionally, AAAC has better strength to weight ratios and therefore better sag characteristics than the other two.

Construction

AAAC is a homogenous concentric-lay-stranded conductor made from round aluminium alloy wires. AAAC conductors are available in single and multi-layer constructions.
These choices provide the necessary strength and the current carrying capacity forgiven applications.

Specifications

AAAC conductors are manufactured in accordance with the following Standards:

  • British Sizes     BS EN 50182
  • IEC Sizes     IEC 1089
  • American Sizes     ASTM B 399
  • Canadian Sizes     CSA C 49
  • German Sizes     DIN 48 201

Features

The high strength to weight ratio provided by the aluminium alloy makes the homogeneous construction of AAAC conductors a preferred choice for transmission and distribution projects where:

  • Conductor with more strength than AAC is required.
  • Conductor with comparable strength than ACSR is preferred, and
  • Higher corrosion resistance than ACSR is essential.

 

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