Patent · US Expired

Transformer

US6867674B1 · kind B1 · utility

10Cited by

269References

20Claims

0Family size

Assignee

Asea Brown Boveri, S.A. · CH

Inventors

Thorsten Schütte · Visby, SE
Par Holmberg · Västerås, SE
Jan Brangefalt · Västerås, SE
Christian Sasse · Hagfors, SE
Peter Carstensen · Adirondack, US

Key dates

Filing date	Nov 30, 1998
Grant date	Mar 15, 2005
Priority date	—
Expiry date	Nov 30, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH01F27/323
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power transformer having at least one high voltage winding and one low voltage winding. Each of the windings includes at least one current-carrying conductor, a first layer having semiconducting properties provided around said conductor, a solid insulating layer provided around said first layer, and a second layer having semiconducting properties provided around said insulating layer. The windings are intermixed such that turns of the high voltage winding are mixed with turns of the low voltage winding.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.