Polyphase interrupter responsive to single phase fault

Details Polyphase interrupter responsive to single phase fault Polyphase interrupter responsive to single phase fault

1988-05-16

1989-02-21

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337154, H01H 7120, H01H 7324

Patent

active

048068985

ABSTRACT:
A polyphase interrupter includes an electric fuse in series with each phase, a phase grounding conductor electrically connected with each phase and movably mounted adjacent and electrically connected with a terminal of each fuse, biasing means arranged to impart individual grounding movement to each phase grounding conductor, latch means normally in engagement with each phase grounding conductor for preventing grounding movement thereof, actuating means associated with each of said fuses and movable into releasing engagement with the associated latch means in response to current interrupting operation of the associated fuse, and coupling means interconnecting all of said latch means for imparting simultaneous releasing movement thereby to effect grounding and interruption of all phases in response to interruption in one phase.

REFERENCES:
patent: 3287521 (1966-11-01), Gryctko et al.

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