Contact system for a short-circuiting device in a medium-voltage or high-voltage switchboard plant
AssigneeABB Technology AG
InventorsRobert Espeseth, Ole Granhaug, Jan-Henrik Kuhlefelt, Thor Endre
Life of this patent
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Abstract
A contact system for a short-circuiting device for a switchboard, the contact system including at least one fixed contact piece connected to a main voltage source. The contact system also includes at least one moving contact piece and an insulating screen penetrable using the at least one moving contact piece so as to make contact between the at least one moving contact piece and the at least one fixed contact piece. The screen is disposed between the at least one fixed contact piece and the at least one moving contact piece.
Claims18
A contact system for a short-circuiting device for a switchboard, the contact system comprising:
- at least one fixed contact piece connected to a mains voltage source;
- at least one moving contact piece connected to ground;
- and
- an insulating screen disposed between the at least one fixed contact piece and the at least one moving contact piece,
- wherein the at least one moving contact piece is configured to penetrate the insulation screen when an arcing fault is detected in the switchboard so as to make contact between the at least one moving contact piece and the at least one fixed contact piece and thereby short-circuit the mains voltage source.
Dependencies are inferred from the claim text.