Patent ID: 7875822
Filing Date: 2011-01-25
Classification: H01H

Abstract:
1. A multiphase current interrupter for interrupting a phase current between two contacts in an electrical phase, said current interrupter comprising: a first ablative chamber disposed around contacts for a first electrical phase, said first chamber having an ablative material thereon that causes a shock wave when an electrical arc is generated in an arc zone for the first electrical phase during a separation of the contacts therein; at least a second ablative chamber disposed around contacts for at least a second electrical phase, said at least second chamber having an ablative material thereon that causes a shock wave when an electrical arc is generated in an arc zone for said second electrical phase during a separation of the contacts therein; and an interconnecting structure to provide fluid communication between the first ablative chamber and said at least second ablative chamber, the interconnecting structure adapted to dissipate at least one of the shock wave generated in said first ablative chamber or the shock wave generated in said second ablative chamber, wherein said interconnecting structure comprises at least one conduit passing from an aperture in a wall of the first ablative chamber to an aperture in a wall of said at least second ablative chamber, and wherein an interior surface of said at least one conduit is lined with an ablative material.