High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Housing structure
Reexamination Certificate
2011-02-22
2011-02-22
Luebke, Renee (Department: 2833)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Housing structure
C218S046000, C218S156000
Reexamination Certificate
active
07893379
ABSTRACT:
The disclosure relates to an electrical switching device, e.g., a generator circuit breaker, and to a method for improved switching-gas cooling. Gas jets are formed by a nozzle body in the exhaust area, are directed against a baffle wall and are swirled. The baffle wall is a component of the switching chamber enclosure and has a high thermal capacity and/or thermal conductivity, so that the switching gas vortices produce a highly efficient switching gas cooling on the baffle wall by turbulent convection. Exemplary embodiments relate inter alia to the design of the baffle wall and of the nozzle body. Advantages include: protection of the switching chamber enclosure against hot gases, improved switching gas cooling, and increased breaking capacity.
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Claessens Max
Grob Stephan
Huguenot Patrick
Kiefer Jochen
Schoenemann Thomas
ABB Technology AG
Buchanan & Ingersoll & Rooney PC
Fishman Marina
Luebke Renee
LandOfFree
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