Vacuum interrupter arrangement for a medium voltage circuit breaker with cup-shaped TMF-contacts
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United States of America Patent
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Nov 1, 2016
Grant Date -
Sep 3, 2015
app pub date -
May 8, 2015
filing date -
Nov 8, 2012
priority date (Note) -
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Abstract
An exemplary vacuum interrupter arrangement for a medium voltage circuit breaker includes a vacuum housing within which a pair of electrical contacts are coaxially arranged and concentrically surrounded by the cylindrical shaped vacuum housing. The electrical contacts are formed as a type of TMF-contacts, each having a slotted cup-shaped contact part which is attached to the distal end of a contact shaft and which is covered by a contact ring disposed on a rim of the cup-shaped contact part, wherein each cup-shaped contact part is provided with a vertical inward bending towards the contact ring. The outer diameter of the bottom section of the cup-shaped contact part is larger than the outer diameter of its rim section, in order to alter the Lorentz force to a respective inward direction.
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