EP 0923783 A1 19990623 - Single coil constitutive of windings for air-core transformer
Title (en)
Single coil constitutive of windings for air-core transformer
Title (de)
Elektrische Spule bestehend aus Wicklungen für Trockentransformatoren
Title (fr)
Bobine électrique élémentaire constitutive d'enroulements pour transformateurs secs
Publication
Application
Priority
FR 9601353 W 19960904
Abstract (en)
[origin: WO9810445A1] The single coil (27) has a straight cross section generally square or rectangular in shape and comprises an insulating resin shell (29) encapsulating an assembly of serial turns (30) formed by a wire conductor (2) with dielectric sheath (3), coiled in layers of longitudinal or radial turns, the number of which is based on the thickness of the sheath (3) such that the voltage between two contiguous turns but most distant electrically does not exceed, for a set input voltage of the coil, a breakdown voltage value (Td) supplied by the application in the air of Paschen's law to the said sheathed conductor. In particular complete windings (38) for air-core transformers can thereby be produced by simply stacking single coils of this type, while retaining air as dielectric medium in the spaces between the turns.
IPC 1-7
IPC 8 full level
H01F 27/24 (2006.01); H01F 27/32 (2006.01); H01F 30/08 (2006.01)
CPC (source: EP)
H01F 27/327 (2013.01)
Citation (search report)
See references of WO 9810445A1
Designated contracting state (EPC)
BE DE ES FI FR GB IT NL SE
DOCDB simple family (publication)
WO 9810445 A1 19980312; AU 6933996 A 19980326; CA 2264703 A1 19980312; DE 69631697 D1 20040401; EP 0923783 A1 19990623; EP 0923783 B1 20040225; JP 2000517479 A 20001226
DOCDB simple family (application)
FR 9601353 W 19960904; AU 6933996 A 19960904; CA 2264703 A 19960904; DE 69631697 T 19960904; EP 96930208 A 19960904; JP 51229498 A 19960904