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. 03, 2022
Filed:
Sep. 13, 2017
Hitachi Energy Switzerland Ag, Baden, CH;
Ronald Boese, Wettingen, CH;
Joel Antelo, Olten, CH;
Remo Mugwyler, Pittsburgh, PA (US);
Nicola Gariboldi, Nussbaumen, CH;
Hitachi Energy Switzerland AG, Baden, CH;
Abstract
This present application concerns a method for preventing an electrical grid from a failure in case of a temporary overvoltage. A method comprising: a) providing an electrical grid line, a surge arrester and a disconnector device with a disconnector unit; b) connecting the surge arrester at one terminal to the electrical grid line; c) connecting the surge arrester at its other terminal to a second terminal of the disconnector device; d) connecting a first terminal of the disconnector device to ground potential; e) interrupting the electrical connection in between the electrical grid line and the ground potential in case of a temporary overvoltage; f) protecting the surge arrester from failure due to a thermal overload caused by the temporary overvoltages by operating the disconnector device before the surge arrester fails due to a thermal overload of the surge arrester.