EP 2260494 A1 20101215 - TRANSFORMER CORE
Title (en)
TRANSFORMER CORE
Title (de)
TRANSFORMATORKERN
Title (fr)
NOYAU DE TRANSFORMATEUR
Publication
Application
Priority
EP 2008003074 W 20080410
Abstract (en)
[origin: WO2009124574A1] The invention relates to a method for producing a transformer core, wherein the transformer core comprises layers of core metal sheets and at least one core metal sheet is formed of at least two metal sheet segments. An end region of the first metal sheet segment has a straight cutting edge, wherein the straight cutting edge of the first metal sheet segment together with a corresponding straight cutting edge of an end region of the second metal sheet segment positively forms a straight bordering and the straight bordering has an angle relative to the longitudinal direction of the end region of one of the metal sheet segments of the first core metal sheet. By using core metal sheets having different angular orientations of the borderings, magnetic losses such as those occurring when using conventional layering techniques can be avoided. At the same time, the intermediate space created by the conventional layering techniques between the individual core metal sheet packs can be minimized, and thereby likewise the susceptibility to corrosion can be reduced or completely avoided.
IPC 8 full level
H01F 3/02 (2006.01)
CPC (source: EP US)
H01F 3/02 (2013.01 - EP US); H01F 27/263 (2013.01 - EP US); Y10T 29/4902 (2015.01 - EP US)
Citation (search report)
See references of WO 2009124574A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009124574 A1 20091015; BR PI0822583 A2 20210413; BR PI0822583 B1 20210928; BR PI0822583 B8 20230425; CA 2721012 A1 20091015; CA 2721012 C 20170307; EP 2260494 A1 20101215; EP 2260494 B1 20130320; US 2011032069 A1 20110210; US 8212645 B2 20120703
DOCDB simple family (application)
EP 2008003074 W 20080410; BR PI0822583 A 20080410; CA 2721012 A 20080410; EP 08735299 A 20080410; US 93747708 A 20080410