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. 18, 1999
Filed:
Oct. 23, 1997
Giandomenico Rivetti, Nembro, IT;
Fabrizio Lorito, Milan, IT;
Serverino Colombo, Dalmine, IT;
Jan Teigland, Gjettum, NO;
Rolf Disselnkotter, Mauer, DE;
Erik Carlson, Nesoddtangen, NO;
ABB Research Ltd., Zurigo, CH;
Abstract
An electric power distribution system having a number of automatic protection breakers distributed on various levels is disclosed herein. Each protection breaker includes an electronic protection unit to open the breaker, which is controlled based on the amount of current flowing through the breaker and its derivative. Each of the breakers is preferably connected in order to exchange information concerning their respective status. Also disclosed herein is method for controlling the intervention sequence of the mutually interlocked breakers, in which a breaker reports a detected fault condition to its next higher level breaker.