TransPowr® ACSR Bare Overhead Conductor (Canada)

ACSR is a composite concentric-lay-stranded conductor. The conductors are manufactured in accordance with the requirements of the latest applicable issue of CAN/CSA C61089. The steel strand or strands form the central core of the conductor, around which is stranded one or more layers of aluminum 1350-H19 wires. 

The steel core may consist of a single strand or a concentric stranded cable of 7, 19, 37, or more wires. Numerous combinations of aluminum and steel strands and layers are possible. The sizes and strandings listed on the following pages are common examples used in overhead lines. Metric (mm2 ) sizes are also available. 

The Canadian ACSR conductors are similar in design (strand component size and configuration) to the ACSR conductors designed to ASTM B232 specifications. Differences lie in the methods used to calculate the rated strength and dc resistance values. 

CAN/CSA C61089 refers to ACSR as Type A1/S1A conductors, where the A1 refers to 1350 H19 aluminum and the S1A as Class A galvanized, regular strength steel.

Features and Benefits

ACSR conductors are recognized for their record of economy, dependability and favorable strength/ weight ratio. ACSR conductors combine the light weight and good conductivity of aluminum with the high tensile strength and ruggedness of steel. In line design, this can provide higher tensions, less sag, and longer span lengths than obtainable with most other types of overhead conductors. The steel strands are added as mechanical reinforcements. The cross-sections above illustrate some common strandings. 

The steel core wires are protected from corrosion by galvanizing. The standard Class A zinc coating is usually adequate for ordinary environments. For greater protection, Class B coating may be specified. High Strength (S2A) or Extra High Strength (S3A) steel core with Class A galvanizing are also available. 

The product is available with conductor corrosion inhibitor treatment applied to the central steel component. 

Applications

Aluminum Conductors, Steel-Reinforced (ACSR) are extensively used for overhead distribution and transmission lines.

Options

• High-Conductivity aluminum (/HC) (62.2% IACS)
• CSA high-strength Class A galvanized steel core (S2A)
• CSA extra-high-strength Class A galvanized steel core (S3A)
• ASTM regular-strength Class A zinc-5% aluminum mischmetal alloy-coated steel core (/MA2 to ASTM B802)
• ASTM high-strength Class A zinc-5% aluminum mischmetal alloy-coated steel core (/MA3 to ASTM B803)
• Aluminum-clad steel core (20SA)
• Non-Specular surface finish (/NS)
• Aluminum Alloy Steel Reinforced Conductors (A2/SxA and A4/SxA) designs are available
• E3X® surface coating (/E3X)