Overhead Aluminium Conductors
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Aluminium conductors have achieved wide acceptance all over the world for use in overhead transmission and distribution lines. Generally a steel core is used with the aluminium to give the conductor mechanical strength. This arrangement is termed Aluminium Conductor Steel Reinforced orACSR. Conductors comprised entirely of aluminium are known as All Aluminium Conductors orAAC.These conductors are extensively used for busbars in outdoor substations where spans are short. All Aluminium Alloy Conductors or AAAC consist of an alloying of aluminium to give a tensile strength in excess of that of AAC, allowing longer spans. These conductors are recommended for coastal areas where severe corrosion is a problem. Hard drawn aluminium in H9 temper is used in both ACSR and AAC. High strain steel wire is used in ACSR and this is sometimes protected from corrosion by an application of grease. Such measures are particularly adopted when the conductor is intended for use in aggressive environments as encountered in coastal regions.
Aberdare Power Cables Division manufactures a wide range of AAC, ACSR and AAAC to customer’s requirements or national specifications.
