EP 0392204 B1 19961106 - Use of a microcrystalline iron-based alloy as a magnetic material for a fault current-protective switch
Title (en)
Use of a microcrystalline iron-based alloy as a magnetic material for a fault current-protective switch
Title (de)
Verwendung einer feinkristallinen Eisen-Basis-Legierung als Magnetwerkstoff für Fehlerstrom-Schutzschalter
Title (fr)
Application d'un alliage microcristallin à base de fer pour disjoncteur de protection à courant de défaut
Publication
Application
Priority
DE 3911480 A 19890408
Abstract (en)
[origin: EP0392204A2] In magnetic core materials for fault current protective switches, a high constancy of the magnetic properties is required over the entire application temperature range from -25 DEG C to +80 DEG C. In the case of the known magnetic core materials with a high nickel content of the permalloy type, this requires a special additional anneal. This can be dispensed with if the magnetic core material used is an iron-based alloy with an iron content of more than 60 atomic %, more than 50% of whose structure consists of fine crystalline grains having a grain size of less than 100 nm and which has a saturation induction of more than 1.1 T and also a remanence ratio of less than 0.7. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 1/14 (2006.01); H01F 1/153 (2006.01); H01H 83/14 (2006.01); H02H 3/33 (2006.01)
CPC (source: EP)
H01F 1/15308 (2013.01); H01H 83/144 (2013.01)
Citation (examination)
ELEKTRONIK Nr. 22, 30. Oktober 1987, MüNCHEN Seiten 99 - 112; R.BOLL, H.R.HILZINGER: 'Weichmagnetische kristalline und amorphe Metalle' *Seite 105, rechte Spalte, Zeile 18 - Zeile 29; Abbildung 8*
Designated contracting state (EPC)
AT BE CH DE ES FR IT LI
DOCDB simple family (publication)
EP 0392204 A2 19901017; EP 0392204 A3 19920408; EP 0392204 B1 19961106; AT E145089 T1 19961115; DE 3911480 A1 19901011; DE 59010553 D1 19961212; ES 2094125 T3 19970116; JP 2563097 B2 19961211; JP H03201412 A 19910903
DOCDB simple family (application)
EP 90104798 A 19900314; AT 90104798 T 19900314; DE 3911480 A 19890408; DE 59010553 T 19900314; ES 90104798 T 19900314; JP 9196290 A 19900406