Richards Manufacturing Company

Douglas Robert Craig

A link disconnect box enables easy field retrofitting of network protectors. The link disconnect box has an outer casing that defines a cavity with a front face opening and top and bottom bus bar openings. Top and bottom terminals seal the top and bottom bus bar openings. The bottom terminal is configured to connect to an existing terminal of the network protector. A removable face plate seals shut the front face opening. Top and bottom bus bars electrically connect to the top and bottom terminals, extending through the respective top and bottom bus bar openings towards each other, with an air gap between them within the cavity. An electrical link, which can be bolted closed, connects and disconnects the top and bottom bus bars by electrically bridging the air gap.

Link disconnect box for an electrical distribution network protector

An obstruction assembly for use in connecting a cable to a disconnectable joint is provided, wherein the connection is to be covered by a sleeve. The obstruction assembly includes a shear bolt having a torque head portion and a main bolt portion, the torque head portion designed to at least partially detach from the main bolt portion at a predetermined torque, and wherein the main bolt portion is designed to connect a cable to a disconnectable joint. The obstruction assembly also includes an obstruction piece having a projection extending away from the main bolt portion a sufficient distance so as to inhibit the placement of a sleeve on the connection between the cable and the disconnectable joint. Preferably, the obstruction piece is removable, in whole or in part, after the torque head portion is at least partially removed from the main bolt portion, such that the sleeve can be properly positioned on the joint.

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Manalapan, NJ, United States of America

Douglas Robert Craig