High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Patent
1996-12-19
1998-07-07
Dang, Khanh
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
218124, 218127, 218129, 200275, H01H 3366
Patent
active
057772878
ABSTRACT:
An electrode assembly for a vacuum interrupter is disclosed having a coil structure that produces an axial magnetic field during operation of the assembly. The electrode coil includes at least one arcuate arm having a radial cross section which provides more material adjacent to a base of the coil than adjacent to a contact plate of the assembly. In a preferred embodiment, the cross sectional area of the arcuate arm has a trapezoidal shape. The electrode assembly provides improved heat transfer during operation of the vacuum interrupter while maintaining a sufficient axial magnetic field. As a result, the electrode assembly may be operated at higher continuous currents than conventional designs.
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Dang Khanh
Eaton Corporation
Moran Martin J.
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