EP 0997921 B1 20011212 - Method and device for control of a electromechanical relay
Title (en)
Method and device for control of a electromechanical relay
Title (de)
Verfahren und Einrichtung zur Steuerung eines elektromechanischen Relais
Title (fr)
Procédé et dispositif de commande pour un relais électromécanique
Publication
Application
Priority
DE 19849684 A 19981028
Abstract (en)
[origin: EP0997921A1] The control method involves driving the relay's coil (4) with an electronic drive unit (5). The AC voltage null crossings are detected, with subsequent detection of a current pulse occurring when the load is switched on. The relay coil is driven after a delay following the last null crossing, after entering a switching command to the drive unit. An estimated delay is defined for initialization and incrementing or decrementing the delay, for subsequent cycles, depending on the sign of the current pulse to switch the relay (3) closer to the null crossing time. An Independent claim is also included for an electromechanical relay.
IPC 1-7
IPC 8 full level
H01H 9/56 (2006.01); H01H 47/04 (2006.01)
CPC (source: EP)
H01H 9/56 (2013.01); H01H 47/02 (2013.01); H01H 2009/566 (2013.01)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0997921 A1 20000503; EP 0997921 B1 20011212; DE 19849684 A1 20000504; DE 59900531 D1 20020124
DOCDB simple family (application)
EP 99119944 A 19991011; DE 19849684 A 19981028; DE 59900531 T 19991011