Circuit breakers

Details Circuit breakers Circuit breakers

2005-09-20

2005-09-20

Enad, Elvin (Department: 2832)

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Operating mechanism structure or arrangement

C218S007000, C218S120000

Reexamination Certificate

active

06946614

ABSTRACT:
A circuit breaker includes an interrupter coaxial with a current sensor or transformer, the combined assembly being encapsulated within solid dielectric material and supported by an earthed tube mounted on an earthed housing. Detection by the sensor of a current overload is communicated over conductors to a circuit within the housing to cause an actuator to pull a dielectric linkage in a direction so as to move an armature through a bell crank and open interrupter, thereby opening the main current path between conductors and flexible coupling. The circuit breaker requires no insulating gas or oil.

REFERENCES:
patent: 3562457 (1971-02-01), Peek
patent: 5191180 (1993-03-01), Kitamura et al.
patent: 5350892 (1994-09-01), Rozier
patent: 5585611 (1996-12-01), Harvey et al.
patent: 5729888 (1998-03-01), Abdelgawad et al.

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