Switchgear bus bars coated by the fluidized bed process

A fluidized bed coating for the insulation of bus bars has been incorporated into a new design of metal enclosed switchgear. The dip-type coating process allows rather complex bus bar configurations to be uniformly coated and insulated with a newly developed epoxy-base insulating material. The switchgear design utilizes the horizontal draw-out of the breaker components from the switchgear cubicles. These cubicles, in turn, are available in factory-assembled groups of from one to five units, depending upon customer needs. Figure 1 shows a typical assembly of cubicles.