Inner layer of Zinc coated steel wires covered with Aluminium wires.
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These bi-metallic conductors are used for the long spans network. They are recommended in the hard climatic environments or for river crossings.
Bi-metallic conductors assembled in concentric layers.
The central layer is made up of zinc coated steel wires. The external layers are made of aluminum wires.
The internal layer is greased. The external layers could be greased or not greased.