GROUNDING SWITCHING DEVICE

Title:

GROUNDING SWITCHING DEVICE

Document Type and Number:

Japanese Patent JP2011040302

Kind Code:

A

Abstract:

To provide a grounding switching device having the responsibility of short-circuit input, while suppressing potential sharing between vacuum contacts.

The grounding switching device includes a fixed side vacuum contact 2; a movable side vacuum contact 3 freely engaging therewith; a movable connection movable shaft 10 connected to the movable-side vacuum contact 3; an opening spring 15 provided on the outer periphery of the connection movable shaft 10 and energized, to open a circuit between the fixed side vacuum contact and the movable side vacuum contact; a fist air circuit 11 fixed to the end of the connection movable shaft 10; a second air contact 12 freely engaging with the first air contact 11; an operation shaft 13 connected to the second air contact 12 and movable with grounding potential; a vacuum-side insulating layer 8a, provided around the fixed side vacuum contact 2 and the movable side vacuum contact 3; and an air-side insulating layer 8b, provided around the opening spring 15 and the first and second air contacts 11, 12.

Inventors:

SHIOIRI SATORU
SATO JUNICHI
KUBOTA NOBUTAKA

Application Number:

JP2009187458A

Publication Date:

February 24, 2011

Filing Date:

August 12, 2009

Export Citation:

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