EP 0800702 B1 19981118 - PROCESS AND CIRCUIT ARRANGEMENT FOR A COMMUTATION AND TURNING-OFF SYSTEM OF A QUICK MAKE-AND-BREAK
Title (en)
PROCESS AND CIRCUIT ARRANGEMENT FOR A COMMUTATION AND TURNING-OFF SYSTEM OF A QUICK MAKE-AND-BREAK
Title (de)
VERFAHREN UND SCHALTUNGSANORDNUNG FÜR EINE KOMMUTIERUNGS- UND LÖSCHEINRICHTUNG EINES SCHNELLUNTERBRECHERS
Title (fr)
PROCEDE ET CIRCUITERIE POUR SYSTEME DE COMMUTATION ET DE BLOCAGE D'UN INTERRUPTEUR A GRANDE VITESSE
Publication
Application
Priority
- DE 4447439 A 19941228
- DE 4447440 A 19941228
- DE 4447441 A 19941228
- EP 9505070 W 19951220
Abstract (en)
[origin: WO9620489A1] Known switching devices have a commutator connected in parallel to a switching section and a condenser for both driving the switch and turning-off the power semiconductor of the commutator. The disadvantage of these devices consists in that they are not able to supply the required turning-off energy in all cases. According to the invention, firing pulses for switching and bridging valves in the switching branch are triggered at the same time as a switching command for the quick make-and-break, so that the current is switched when the contact starts to open into the switching branch and only later, when the switching section of the quick make-and-break is already open and there is no more any risk of short-circuiting the turning-off condenser, a turning-off thyristor is fired and the switching thyristor is turned-off by discharging the turning-off condenser, cutting the switching current. In order to monitor the switching section, the corresponding valves in the switching branch are fired, establishing a current flow between the busbar and the switching section, and the current, whose intensity represents a criterion for the state of the section, is measured at the exit of the section. Various circuit arrangements are disclosed to carry out the process.
IPC 1-7
IPC 8 full level
H01H 9/54 (2006.01); H01H 33/59 (2006.01)
CPC (source: EP)
H01H 9/542 (2013.01); H01H 33/596 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR LI NL
DOCDB simple family (publication)
WO 9620489 A1 19960704; AT E173559 T1 19981215; CZ 287089 B6 20000913; CZ 9702004 A3 19981216; DE 59504293 D1 19981224; EP 0800702 A1 19971015; EP 0800702 B1 19981118; PL 321014 A1 19971124
DOCDB simple family (application)
EP 9505070 W 19951220; AT 95942718 T 19951220; CZ 200497 A 19951220; DE 59504293 T 19951220; EP 95942718 A 19951220; PL 32101495 A 19951220