Patent ID: 9530591
Filing Date: 2016-12-27
CPC Classification: H01H

Claim Text:
1. A high voltage network grounding switch safety system operationally mounted to a liquid-tight tank, wherein said network grounding switch includes a rotary multi-position, 3-phase arrangement comprising a rotating shaft, at least three switch input connecting points, at least three paired contacts affixed to said shaft, each of said paired contacts being configured and aligned to mechanically engage upon rotation of said shaft with at least one secondary switch contact, the grounding switch safety system further including a ground bus, an exterior ground connector, and incoming bushings with each bushing having internal and external electrical connection points, and further wherein said tank is configured with a mounting structure for securing at least a portion of said network grounding switch within an interior of said liquid-tight tank, and wherein said switch safety system further comprises: a) a liquid-tight gland for passage of the shaft to an external handle to control rotation of said shaft from outside said tank; b) a mated interface between said external handle and said shaft of said network grounding switch for extension through said gland; c) an exterior safety shear device secured to said external handle connected to said shaft; d) a ground path connecting the tank interior and said switch through an internal plate fixed in proximity to said liquid-tight gland; and e) at least one flexible connection fixedly connected to at least one of said switch input connecting points on said shaft and to at least one of said internal electrical connection points of said incoming bushings for linkage therebetween; and, f) wherein each of said secondary switch contacts includes a surface area for electrical contact with a mating surface of said corresponding mechanically engaged rotating paired contacts aligned therewith.