EP 0665564 B1 19980114 - Driving mechanism for a protective breaker
Title (en)
Driving mechanism for a protective breaker
Title (de)
Antriebsmechanismus für einen Schutzschalter
Title (fr)
Mécanisme d'actionnement d'une chambre de coupure de protection
Publication
Application
Priority
FR 9401071 A 19940201
Abstract (en)
[origin: EP0665564A1] The moving contact in a vacuum chamber (1) is operated by a rod (4) connected to a displacement device (5) which is driven by a conductive helical spring (6) of shape memory alloy. Excessive current on the protected line passes through the spring, producing enough heat to switch the alloy from the martensitic to the austenitic phase. An abrupt movement is executed through the dead point constituted by the longitudinal axis of the chamber. Reclosure can be effected by a sequencer (8) comprising three retractable and two non-retractable cams (81-83;84,85) and three pneumatic jacks (87-89).
IPC 1-7
IPC 8 full level
H01H 3/30 (2006.01); H01H 71/14 (2006.01); H01H 75/04 (2006.01); H01H 3/60 (2006.01)
CPC (source: EP US)
H01H 3/30 (2013.01 - EP US); H01H 71/145 (2013.01 - EP US); H01H 75/04 (2013.01 - EP US); H01H 3/60 (2013.01 - EP US); H01H 2003/3094 (2013.01 - EP US); H01H 2061/0115 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0665564 A1 19950802; EP 0665564 B1 19980114; AT E162335 T1 19980115; CA 2141505 A1 19950802; CA 2141505 C 19981201; DE 69501407 D1 19980219; DE 69501407 T2 19980423; DK 0665564 T3 19980330; ES 2112017 T3 19980316; FR 2715763 A1 19950804; FR 2715763 B1 19960329; US 5563390 A 19961008
DOCDB simple family (application)
EP 95400197 A 19950130; AT 95400197 T 19950130; CA 2141505 A 19950131; DE 69501407 T 19950130; DK 95400197 T 19950130; ES 95400197 T 19950130; FR 9401071 A 19940201; US 37996595 A 19950127