The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2014
Filed:
Jun. 27, 2011
Jan Lundquist, Ludvika, SE;
Jürgen Häfner, Ludvika, SE;
Leif Sköld, Ludvika, SE;
Håkan Wieck, Ludvika, SE;
Dag Andersson, Ludvika, SE;
Jan Lundquist, Ludvika, SE;
Jürgen Häfner, Ludvika, SE;
Leif Sköld, Ludvika, SE;
Håkan Wieck, Ludvika, SE;
Dag Andersson, Ludvika, SE;
ABB Technology AG, Zürich, CH;
Abstract
A voltage surge protection device for protection of a high voltage device includes a varistor having a first part and a second part separated by varistor material. The voltage surge protection device further includes an expandable member arranged to act on a movable electrical contact for short-circuiting the voltage surge protection device upon a threshold voltage being applied between the first part and the second part of the varistor. A high voltage circuit breakers includes one or more semiconductor devices connected in series and the voltage surge protection device connected in parallel thereto.