Vacuum type switch gear device having L shaped stationary and mo

Details Vacuum type switch gear device having L shaped stationary and mo Vacuum type switch gear device having L shaped stationary and mo

1998-06-25

1999-09-14

Donovan, Lincoln

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Vacuum

218123, 218128, H01M 3366

Patent

active

059526360

ABSTRACT:
In a vacuum type switch gear device an L shaped stationary and movable conductors arrangement, a transitive portion from one spiral arc groove to a neighboring another spiral arc groove on the surface of a movable electrode defined by the terminating end portion of the one spiral groove, the starting end of the adjacent neighboring other spiral groove and the outer circumferential edge portion of the movable electrode is arranged in a substantially overlapping relationship in a vertical direction with the movable conductor. Thus an adverse effect of a current loop flowing through the movable conductor against an arc generated between movable and stationary electrodes is limited to thereby improve the circuit breaking performance.

REFERENCES:
patent: 4415787 (1983-11-01), Yamanaka
patent: 4695689 (1987-09-01), Kurosawa et al.
patent: 4885442 (1989-12-01), Kriechbaum
patent: 5495085 (1996-02-01), Yorita et al.
patent: 5719365 (1998-02-01), Tanimizu et al.
patent: 5763848 (1998-06-01), Hakamata et al.

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