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. 29, 2005
Filed:
Feb. 02, 1998
Udo Fromm, Vasteras, SE;
Sven Hornfeldt, Vasteras, SE;
Par Holmberg, Vasteras, SE;
Gunnar Kylander, Vasteras, SE;
LI Ming, Vasteras, SE;
Mats Leijon, Vasteras, SE;
Udo Fromm, Vasteras, SE;
Sven Hornfeldt, Vasteras, SE;
Par Holmberg, Vasteras, SE;
Gunnar Kylander, Vasteras, SE;
Li Ming, Vasteras, SE;
Mats Leijon, Vasteras, SE;
ABB AB, Vasteras, SE;
Abstract
The present invention relates to a power transformer/inductor comprising at least one winding. The windings are designed by means of a high-voltage cable, comprising an electric conductor, and around the conductor there is arranged a first semiconducting layer, around the first semiconducting layer there is arranged an insulating layer and around the insulating layer there is arranged a second semiconducting layer. The second semiconducting layer is earthed at or in the vicinity of both ends () of each winding and furthermore one point between both ends () is directly earthed.