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:
Nov. 08, 2005
Filed:
Dec. 14, 2001
Bengt-olof Stenestam, Ludvika, SE;
Bengt-Olof Stenestam, Ludvika, SE;
ABB Technology Ltd., Zürich, CH;
Abstract
The present invention discloses a method and apparatus () for condition diagnosing of an inductive power device (), such as a transformer or reactor, having power windings () immersed in a fluid () being cooled by cooling devices (). The diagnosing method basically compares and evaluates expected heat flows into and out from the inductive power device () system together with an actual and a previous heat content of such a system. From the heat flows the heat balance in the system may be obtained and is used for diagnosing the operation conditions of the inductive power device (). The results from the condition diagnosing may be used as indicators () that can alarm operators, may be sent as a data signal () to remote and/or portable display means (), such as a computer, or may be used as input data to control or simulation systems.