The vast majority of wire and cable products are products with the same cross-section (cross-section) shape (ignoring errors caused by manufacturing) and long strips, because they are used as lines or coils in systems or equipment. decided. Therefore, to study and analyze the structural composition of cable products, it is only necessary to observe and analyze from its cross-section.
The structural elements of wire and cable products can be generally divided into four main structural components: conductors, insulating layers, shielding and sheathing, as well as filling elements and tensile elements. According to the use requirements and applications of the products, some products have extremely simple structures.