Construction Instructions For Pre-twisted Wires As A Protective Layer On The Conductor Surface

In overhead power transmission systems, the outer protective component adopts a continuous metal spiral covering structure formed around the conductor by armor rods. This design allows the metal wire to fit tightly with the conductor. The fitting process originates from the tubular cavity made by armor rods for acsr wrapping the conductor's outer surface. The armor rods transmission line is distributed along the length of the conductor, and the metal ring structure contacts the outer layer of the conductor to form a structural covering layer.

armour rod material is generally made of high-strength metal wires such as aluminum-clad steel or galvanized steel, which can extend along the conductor in the spiral direction and distribute the tensile force evenly. This construction method allows external forces to be transmitted along a long conductor segment, preventing concentration at a single point.