Abstract:
Drive mechanism for the synchronous operation of a plurality of vacuum circuit breakers (35). It comprises energy storage means (6), conversion means (37) for converting energy stored in the energy storage means (6) into an operation of switching off the vacuum circuit breakers (35) and for switching on the vacuum circuit breakers (35), in which latter process energy is simultaneously stored in the energy storage means (6). The conversion means (37) comprise first transfer means which can move substantially in a first direction and second transfer means which can move substantially in a second direction. The conversion means also comprise at least one connecting rod (4, 4'), which on one side (23, 23') is rotatably secured to the first transfer means and on a second side (22, 22') is rotatably secured to the second transfer means. The drive mechanism also comprises a trip mechanism which interacts with the drive mechanism and a disconnector drive mechanism (70) for the simultaneous operation of disconnectors (73).
Abstract:
Drive mechanism for the synchronous operation of a plurality of vacuum circuit breakers (35). It comprises energy storage means (6), conversion means (37) for converting energy stored in the energy storage means (6) into an operation of switching off the vacuum circuit breakers (35) and for switching on the vacuum circuit breakers (35), in which latter process energy is simultaneously stored in the energy storage means (6). The conversion means (37) comprise first transfer means which can move substantially in a first direction and second transfer means which can move substantially in a second direction. The conversion means also comprise at least one connecting rod (4, 4'), which on one side (23, 23') is rotatably secured to the first transfer means and on a second side (22, 22') is rotatably secured to the second transfer means. The drive mechanism also comprises a trip mechanism which interacts with the drive mechanism and a disconnector drive mechanism (70) for the simultaneous operation of disconnectors (73).
Abstract:
The invention relates to a snap-action mechanism for electrical switchgear with a drive shaft and an actuation disk which is non-rotatably linked with said drive shaft and actuates a moving spring. The snap-action mechanism further comprises a transfer element (8) that is rotatably received by the drive shaft and that is hinged at the moving spring and acts upon the switch shaft via a connecting rod (9). According to the invention, the snap-action mechanism is designed in such a manner that the switch-off force required for overcoming the adhesive forces for switching off the switchgear is reliably produced and transmitted. To this end, a pressure spring (18) is arranged between the transmission element (8) and the connecting rod (9) and is mounted on one of these elements of the snap-action mechanism. Said pressure spring interacts with the respective other element of the snap-action mechanism once the dead center position (T) has been overcome.
Abstract:
Système d'aide à la détection d'une défaillance d'un sectionneur adapté aux moyennes et hautes tensions comprenant : - une première butée (71) et une seconde butée (72); - un corps (8) accouplable à un premier dispositif de déplacement (4) via un point d'attache (83), ledit corps comprenant une première extrémité (81) configurée pour interagir avec ladite première butée (71) et une seconde extrémité (82) configurée pour interagir avec ladite seconde butée (72) de façon à ce que, en cas de défaillance du second dispositif de déplacement (5), ladite première extrémité (81) et ladite seconde extrémité (82) viennent buter contre respectivement la première butée (71) et la seconde butée (72) à l'ouverture dudit sectionneur, de façon à bloquer ledit élément (41) à une position intermédiaire, permettant ainsi à un indicateur de position (6) dudit élément (41) de signaler une défaillance.
Abstract:
An electromagnetic circuit breaker (1) comprising fixed contacts (11), moveable contact bridges (13) arranged to electrically connect the fixed contacts(11), a magnetic core (3), a coil (4) electrically connected to the fixed contacts (11) and arranged to magnetise the magnetic core (3), an actuator (5) arranged to actuate the moveable contact bridges (13) between a closed circuit position in which the moveable contact bridges (13) are in mechanical connection with the fixed contacts (11) and the actuator (5) is in a first actuator position and an open circuit end position in which the actuator (5) is in a second actuator position, a magnetic member (7) arranged to move to the magnetic core (3) when the coil (4) is fed with a current greater than a threshold value, wherein the magnetic member (7) is arranged to initiate an initial motion of the actuator (5) when the magnetic member (7) moves towards the magnetic core (3) to break the mechanical connection between the moveable contact bridges (13) and the fixed contacts (11).The electromagnetic circuit breaker (1) further comprises a resilient arrangement (17), an energy accumulating member (19), and a bi-stable linkage (9) which in a first equilibrium state is arranged to maintain the resilient arrangement in an energised state, forcing the actuator (5) into the first actuator position, wherein bi-stable linkage (9) is arranged to be released from the first equilibrium state by the initial motion of the actuator (5), wherein the energy accumulating member (19) is arranged to provide a continued motion of the actuator (5) to the second actuator position.