EP 0189887 A3 19890405 - CLOSING DELAY ARRANGEMENT FOR CURRENT LIMITING CIRCUIT BREAKER CONTACTS
Title (en)
CLOSING DELAY ARRANGEMENT FOR CURRENT LIMITING CIRCUIT BREAKER CONTACTS
Publication
Application
Priority
IT 1927985 A 19850129
Abstract (en)
[origin: EP0189887A2] A control arrangement to prevent or delay the closing of current limiting circuit breaker contacts after opening by repulsion due to a short circuit is disclosed. A first contact arm (10) and a second contact arm (12) are operatively associated with a ratchet (38) for locking the second contact arm (12). A release lever (62) operatable by the first contact arm (10) and the breaker operating mechanism releases the ratchet (38) after a delay period greater than the duration of the short circuit or the operating time of the breaker operating mechanism.
IPC 1-7
IPC 8 full level
H01H 71/44 (2006.01); H01H 77/10 (2006.01); H01H 7/00 (2006.01); H01H 75/04 (2006.01)
CPC (source: EP)
H01H 77/104 (2013.01); H01H 7/00 (2013.01); H01H 75/04 (2013.01)
Citation (search report)
- [A] FR 1551832 A 19681227
- [A] US 3469216 A 19690923 - SHIRAISHI TOKUO
- [A] FR 2400761 A1 19790316 - GOULD INC [US]
Designated contracting state (EPC)
AT BE CH DE FR GB LI NL SE
DOCDB simple family (publication)
EP 0189887 A2 19860806; EP 0189887 A3 19890405; EP 0189887 B1 19920108; AT E71474 T1 19920115; DE 3683301 D1 19920220; IT 1184864 B 19871028; IT 8519279 A0 19850129
DOCDB simple family (application)
EP 86101066 A 19860127; AT 86101066 T 19860127; DE 3683301 T 19860127; IT 1927985 A 19850129