High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Multiple break
Reexamination Certificate
2007-05-01
2007-05-01
Enad, Elvin (Department: 2832)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Multiple break
C218S154000
Reexamination Certificate
active
11204368
ABSTRACT:
A switch disconnector apparatus of the linear air type is described, said apparatus comprising: an upper device for transferring current, a fixed upper contact connected electrically to the upper device, a lower device for transferring current, a sliding lower contact connected electrically to the lower device and a contact tube movable between a closing position and a disconnecting position. According to the invention, the apparatus also comprises a casing of insulating material which forms a protective atmosphere. Moreover, the contact tube, the upper contact and the lower contact are substantially completely enclosed inside the casing. The disconnector is therefore closed, inside a protected environment, segregated, but not perfectly sealed. With the present invention all the drawbacks associated with unprotected air systems are avoided and a compact and safe apparatus preventing discharges between several phases is provided.
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Standard Search Report for MI20041708 dated May 4, 2005.
Perli Giorgio
Rossi Armando
Vaghini Alberto
Enad Elvin
Fishman M.
Nixon & Vanderhye P.C.
Vei Power Distribution S.p.A.
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