An elongated section of bus duct having U-shaped insulating pieces surrounding the longitudinally extending edges of the stacked bus bars and a flat insulating sheet of a material which does not adhere to the U-shaped insulating pieces disposed between the bus bars. The flat insulating sheets can also be disposed between the housing and the outside stacked bus bars which are compressed by the housing. The non self-adhering U-shaped pieces and the flat insulating sheets permit the insulated bus bars to slide with respect to each other due to differentials in expansion and contraction of the bus bars. The sliding action, of the U-shaped insulating pieces and the flat insulating sheet, prevents rupture of the primary insulation layer which is applied to the bus bars and which is self-adhering at operating temperatures and pressures.
Charles L. Weimer - Patterson Heights PA Barry R. Richards - Beaver PA
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
H01R 1100
US Classification:
339 22B
Abstract:
A busway joint construction for electrically connecting and disconnecting busway sections of bus bars and characterized by a detachable joint assembly having pairs of plates extending between longitudinally spaced bus bars; one plate being an electrical conductor; the other plate being a non-conductor and having integral transversely extending spacers for maintaining the conductor plates of adjacent bus bars in spaced relation to facilitate insertion of the joint assembly; and the spacers including support surfaces for the electrical conductor.