These conductors are formed by several wires of aluminum and Galvanised steel, stranded in concentric layers. The wire or wires which form the core, are made of Galvanised steel and the external layer or layers, are of aluminum. Galvanised steel core consist normally of 7,19,37 and 61 wires. The diameters of steel and aluminum wires can be the same, or different.
Overhead transmission and distribution lines medium, high and extra high voltage.
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