Schneider Electric Usa, Inc.

Rodger Dale Waynick, Sr

Eldridge R Byron

Matthew A Williford

A front-accessible bus-connection mounting frame assembly in a draw out switchgear cabinet is fastened to the back wall of the breaker cabinet. The frame assembly provides for insertion and bayonet mounting of a primary bus connector's cylindrical conductor onto the mounting frame. The primary bus connector is bayonet mounted on the internal ribs of a central cylinder of the mounting frame assembly. The primary bus connector is then fixed in position by bolts front mounted down the central cylinder and out through a bus riser fitted at the back of the mounting frame assembly to establish electrical continuity. The central cylinder further provides a current transformer bushing tube around the primary bus connector and necessary flanges to mount the mounting frame assembly to the back wall and secure the current transformers around the bushing.

Frame assembly for a front mounted primary bus connector and method of construction

An assembly that prevents a circuit breaker from being racked into and out of a switchgear compartment unless the compartment door is closed completely. A coupling member protrudes through the door and has an exposed hexagonal-shaped end to receive a socket of a racking tool. When the door is closed, a recess of the coupling member receives a drive shaft that has a drive pin through it. The drive pin slides into a slot formed in the recess of the coupling member such that when the racking tool cranks the coupling member, the coupling member in turn cranks the drive shaft as the drive pin engages the slot in the coupling member. However, when the door is open, the coupling member is separated from the drive pin so rotating the coupling member does not turn the drive shaft. An optional padlock and deadbolt assembly provides added security against unauthorized access to the tool-receiving end of the coupling member.

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Murfreesboro, TN, United States of America

Rodger Dale Waynick, Sr