EP 0461712 A1 19911218 - Transformer having an air gap and an insulation foil packet.
Title (en)
Transformer having an air gap and an insulation foil packet.
Title (de)
Transformator mit einem Luftspalt und einem Isolierfolienpaket.
Title (fr)
Transformateur avec un entrefer et un paquet de feuilles isolantes.
Publication
Application
Priority
NL 9001350 A 19900614
Abstract (en)
The transformer (1) comprises a ferromagnetic core (3), which is interrupted by an air gap (11), and a coil former (5), which is provided with a winding packet (7). The coil former (5) surrounds the core (3) at the area of the air gap (11). The winding packet (7) comprises an electrically conducting foil winding packet (17) and spacer elements (15) which are located between the coil former (5) and the foil winding packet (17) and reduce the formation of eddy currents due to the magnetic stray field (13). <IMAGE>
IPC 1-7
IPC 8 full level
H01F 27/28 (2006.01); H01F 3/14 (2006.01); H01F 27/34 (2006.01); H01F 27/36 (2006.01)
CPC (source: EP)
H01F 3/14 (2013.01); H01F 27/346 (2013.01); H01F 2027/348 (2013.01)
Citation (search report)
- [Y] GB 2052166 A 19810121 - PHILIPS NV
- [Y] DE 3625964 A1 19870212 - SCHRACK ELEKTRONIK AG [AT]
- [A] EP 0315527 A1 19890510 - OREGA ELECTRO MECANIQUE [FR]
- [A] EP 0108921 A1 19840523 - VACUUMSCHMELZE GMBH [DE]
- [A] DE 2305957 A1 19740815 - SIEMENS AG
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0461712 A1 19911218; JP H04230010 A 19920819; NL 9001350 A 19920102
DOCDB simple family (application)
EP 91201393 A 19910606; JP 16751991 A 19910613; NL 9001350 A 19900614