Multiroller strings

Multiroller strings are used for stringing of steel wires, steel-aluminum, bronze and steel-bronze conductors on the intermediate large-span towers for providing a smooth conductor bend in cases where the length of the adjacent spans varies significantly. The string design provides self-aligning of the rollers on an arc which size depends on tower height, span length and conductor’s tension. When stringing steel-aluminum conductors in roller strings, a safety case shall be foreseen. Safety case shall be crimped on a conductor. Four-roller and six-roller strings are used for stringing of conductor or ground wire on the intermediate large-span towers in cases where the length of the adjacent spans varies significantly, to allow its axial movement through the rollers. The rollers are self-aligning on an arc which size depends on tower height, span length and conductor’s tension. Multiroller strings meet the requirements of TU U 31.2-30255335-002:2006.