TransPowr® A2 (AASC) Bare Overhead Conductor (Canada)
A2 conductors are made from high-strength aluminum alloy and feature a concentric lay-stranded design. They resemble the A1 or AAC all-aluminum conductors in both construction and appearance. These conductors are produced in compliance with the latest applicable requirements outlined in CAN/CSA C61089.
A2, also known as AASC (Aluminum Alloy Stranded Conductor), is a term recognized by CSA.
The A2/AASC conductors are constructed from a heat-treated, high-strength magnesium-silicon aluminum alloy. The aluminum strands form a concentric stranded cable, typically composed of 7, 19, 37, or more wires. The sizes and strand configurations provided on the following pages are common examples used in overhead power lines.
Features and Benefits
Aluminum alloy conductors have several advantages over ACSR or all-aluminum conductors.
- Lower power losses than for equivalent single-aluminum-layer ACSR conductors. (The inductive effect of the steel core in the ACSR is eliminated.)
- Simpler fittings than those required for ACSR. Excellent corrosion resistance in environments conducive to galvanic corrosion in ACSR.
- Strength and sags approximately the same as for equivalent 6/1 and 26/7 ACSR conductors.
- Outside diameters are the same as those of standard ACSR conductors, permitting the interchangeability of fittings.
- Greater resistance to abrasion than that of 1350 wires in all-aluminum or ACSR conductors.
Applications
A2 aluminum alloy conductors are widely used for overhead distribution and transmission lines, particularly in coastal areas where corrosion can affect the steel used in ACSR (Aluminum Conductor Steel Reinforced) constructions.
These aluminum alloy conductors serve as an alternative to single-layer ACSR conductors (ranging from 6 AWG to 4/0 AWG) to help reduce power losses in overhead distribution and transmission lines. By eliminating the inductive effect of the steel core in ACSR conductors, the operating efficiency of the lines is significantly improved.
Options
- Non-Specular surface finish (/NS)
- E3X® surface coating (/E3X)