EP 0615652 B1 19950517 - VACUUM SWITCH.
Title (en)
VACUUM SWITCH.
Title (de)
VAKUUMSCHALTER.
Title (fr)
INTERRUPTEUR A VIDE.
Publication
Application
Priority
- DE 4139834 A 19911203
- DE 9200992 W 19921127
Abstract (en)
[origin: WO9311552A1] The arc can be moved between the open contacts by the magnetic forces of a magnetic system (20) which is arranged outside the casing (10) at the end of the current supply (14) to the fixed contact (2). According to the invention, a substantially disc-shaped fixed contact (2) forms the base or cover of the hollow cylindrical casing (10). The magnetic system (20) generates a magnetic field (6) which passes through the fixed contact (2) and the field lines of which form a toroidal arch, the circular apex line of which has a radius rs? which is, at the most, as great as the radius r1? of the smaller of the two contacts (2, 4). Contact burning is correspondingly reduced by the movement of the cathode spot in the magnetic field (6).
IPC 1-7
IPC 8 full level
H01H 33/66 (2006.01); H01H 33/664 (2006.01); H01H 33/18 (2006.01)
CPC (source: EP)
H01H 33/664 (2013.01); H01H 33/182 (2013.01); H01H 33/6641 (2013.01); H01H 33/6644 (2013.01); H01H 33/6645 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
WO 9311552 A1 19930610; DE 4139834 A1 19930609; DE 59202269 D1 19950622; EP 0615652 A1 19940921; EP 0615652 B1 19950517
DOCDB simple family (application)
DE 9200992 W 19921127; DE 4139834 A 19911203; DE 59202269 T 19921127; EP 92923684 A 19921127