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:
Feb. 16, 2021
Filed:
Jun. 14, 2018
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventors:
Agostino Butti, Vittuone, IT;
Antonio Currá, Abbiategrasso, IT;
Luca Ghezzi, Gallarate, IT;
Vittorio Cozzi, Vittuone, IT;
Assignee:
ABB Schweiz AG, Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 3/04 (2006.01); H02H 3/04 (2006.01); H02H 3/33 (2006.01); G05B 19/042 (2006.01);
U.S. Cl.
CPC ...
H02H 3/044 (2013.01); H02H 3/335 (2013.01); G05B 19/0428 (2013.01);
Abstract
An electronic protection device for a LV electric line, the protection device being provided with a control unit comprising a controller including digital data processing resources clocked by a first clock source adapted to provide a first flock signal with a first nominal clock frequency. The control unit comprises a clock testing arrangement adapted to check whether the first clock source is properly operating.