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:
May. 06, 2014
Filed:
Nov. 16, 2009
Jürgen Häfner, Ludvika, SE;
Björn Jacobson, Ludvika, SE;
Jürgen Häfner, Ludvika, SE;
Björn Jacobson, Ludvika, SE;
ABB Technology AG, Zurich, CH;
Abstract
A device () to break an electrical current flowing through a power transmission or distribution line () comprises a parallel connection of a main breaker () and a non-linear resistor (), where the main breaker () comprises at least one power semiconductor switch of a first current direction. The device () further comprises a series connection of a high speed switch () comprising at least one mechanical switch and of an auxiliary breaker (), the auxiliary breaker having a smaller on-resistance than the main breaker () and comprising at least one power semiconductor switch of the first current direction. The series connection is connected in parallel to the parallel connection. In a method to use the device () first the auxiliary breaker () is opened, thereby commutating the current to the main breaker (), afterwards the high speed switch () is opened and afterwards the main breaker () is opened thereby commutating the current to the non-linear resistor (). The device () can further be used in a current limiting arrangement.