Yoke

When building a two-circuit or a multi-circuit suspension set, yoke plates are intermediate members that allow uniform load distribution between insulator strings by means of their hinged connection. Yoke plates are also used for connection of two, three and more phase conductors to the single-circuit suspension sets. The distance between mount points of insulator strings has to be at least 400 mm for the insulators with cap diameter of up to 300 mm and 450 mm for the insulators with cap diameter of up to 370 mm. Structurally yoke plates can be flat with a single or double plate, or star-like. Available versions include two-circuit, three-circuit, three-beam, four-beam, five-beam, eight-beam, balancing or special. Double yoke plates of all versions are complete with threaded pins, nuts and dowels. The special yoke plates are represented by type КЛ. Yoke plates, type КЛ are intended for integration of all insulator strings after their installation and ensure reliable OTL operation in case of a single-circuit fault in the two and three-circuit strings or single- and even double-circuit fault in the four- and five-circuit strings, thus preventing conductor from falling to the ground. Yoke plates are installed in the tension insulator sets with separate fastening of two, three, four, five or eight wires of the bundle phase conductor to the tower. Yoke plate beams are cotter-pinned to the adjustable extension links, types ПРР and 2ПРР.