The Design and Manufacture of ACSR

The production of the wire and the twisting of the strand should be such that there is no obvious back-twist or loose strand after the wire is cut. The forming of the steel core should be done when the wire is cut and the aluminum wire is stripped from the steel core according to the requirements of the joint, the steel core should be able to be reassembled without difficulty, and the cutting end of the self-guiding wire of the connecting pipe can be easily embedded in the core by holding the cutting end of the self-guide wire of the connecting pipe with one hand. Similarly, the forming of aluminium wires should be done the aluminum wire can be easily reassembled and easy to hold in one hand to fit the connecting tube from the cutting end of the wire.

Finely machined conductors should reflect the highest quality of modern traverse manufacturing in material, process, and design. After fabrication, the shape and surface of the conductor shall be uniform cylindrical, and shall remain in this state until the conductor has been erected.

When the conductor is subjected to 30% of the rated maximum tension and is not subjected to tension, the permissible reduction in the circumference of the conductor does not exceed 2%. Wire surfaces should be free of defects, flash, wear, and other irregularities or defects that increase radio interference and corona losses. When the wire is subjected to 50% of the rated maximum tension, the wire and surface should maintain its cylindrical shape, and no part of it should be relatively moved to an inappropriate position so as to affect the longitudinal smoothness of the wire.

When the wire is subjected to 50% of the rated maximum tension, the longitudinal smoothness of the wire shall be examined using a ruler so that the straight edge of the ruler rests on the wire in parallel, and then the change between the wire and the ruler is measured with a feeler gauge. The length of the ruler should be at least 2 times the distance from the outside of the wire, and the change between the face of the wire and the ruler should not exceed 0.5 mm. When repeated occurrence of bursts of wire in a reel, even if the protrusion is less than 0.5mm, the seller is responsible for prompt replacement.