EP 0686109 B1 19970115 - CIRCUIT FOR CHECKING THE OPERATION OF FREE TRACK SIGNALLING RELAYS
Title (en)
CIRCUIT FOR CHECKING THE OPERATION OF FREE TRACK SIGNALLING RELAYS
Title (de)
SCHALTUNG ZUR FUNKTIONSPRÜFUNG VON FREIMELDERELAIS
Title (fr)
CIRCUIT DE CONTROLE DU FONCTIONNEMENT DE RELAIS DE SIGNALISATION DE VOIE LIBRE
Publication
Application
Priority
- DE 9400145 W 19940214
- DE 9302965 U 19930223
Abstract (en)
[origin: WO9419223A1] In order to ensure that a free track signalling relay (FM1, FM2) switched on over a long time can really fall off if required when a track section is occupied, said free track signalling relay is swithced off for checking purposes. Its switching reaction to such a command is monitored by means of a repeater contact (FM1/2, FM2/2). For that purpose the free track signalling relay is designed as a signalling relay. For the signal box the free track signalling state of the corresponding track section remains, as the signalling contact (FM1/1, FM2/1) of the checked free track signalling relay is bridged during the checking operation by a contact (P1/1, P2/1), then closed, of a checking relay actuatable only during the checking operation.
IPC 1-7
IPC 8 full level
B61L 1/18 (2006.01); B61L 1/20 (2006.01); B61L 21/06 (2006.01)
CPC (source: EP)
B61L 1/181 (2013.01); B61L 1/20 (2013.01)
Designated contracting state (EPC)
AT CH DE DK LI
DOCDB simple family (publication)
WO 9419223 A1 19940901; AT E147689 T1 19970215; DE 59401606 D1 19970227; DE 9302965 U1 19930429; DK 0686109 T3 19970721; EP 0686109 A1 19951213; EP 0686109 B1 19970115
DOCDB simple family (application)
DE 9400145 W 19940214; AT 94906865 T 19940214; DE 59401606 T 19940214; DE 9302965 U 19930223; DK 94906865 T 19940214; EP 94906865 A 19940214