Four-pole to three-pole bussing for a network protector

Details Four-pole to three-pole bussing for a network protector Four-pole to three-pole bussing for a network protector

1998-11-23

2000-03-07

Sherry, Michael J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific circuit breaker or control structure

361 62, 335 8, H01H 7300

Patent

active

060348615

ABSTRACT:
A network protector system is provided in which the internal bussing of the network protector enclosure is constructed to adapt a four-pole circuit breaker for a three-pole network protection operation. This is provided by joining the central two bus conductors of the four line transformer input busses to make a single stab connection which interconnects with two central poles of the four-pole circuit breaker. The load output of the four-pole circuit breaker is interconnected with are overlapping stab which in turn is connected to a signal output bus bar so that the network protector system essentially converts a four-pole circuit breaker and line transformer system to a three-pole output system.

REFERENCES:
patent: 4383146 (1983-05-01), Bur
Network Protectors type CM 22 for Heavy Load Density Areas, Descriptive Bulletin 35-550, Westinghouse Electric Corporation, Mar. 1964.
CMD Network Protector, Descriptive Bulletin 35-552 D WE A, Westinghouse Electric Corporation, Sep., 1975.
Instructions for Type CMD-1875A Network Protectors, Westinghouse Electric Corporation, May 1975.

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