Abstract:
Erfindungsgemäß wird eine Schaltvorrichtung (1) mit einer gasdichten Schaltkammer, in der ein beweglicher Kontakt zum Schließen und Öffnen eines Stromkreises angeordnet ist. Im Innern der Schaltkammer mit den Wänden (6) ist eine magnetische Formgedächtnislegierung (4) zum Antrieb des beweglichen Kontakts (2) vorgesehen. Die Schaltvorrichtung (1) umfasst mindestens einen Aktor (12), der den Haltebetrieb der Schaltvorrichtung (1) bewirkt.
Abstract:
A high voltage disconnection unit comprising a fixed contact assembly having at least a first fixed main contact and a first fixed auxiliary contact, a movable contact assembly having at least a first movable main contact and a first movable auxiliary contact that rotate with respect to said first fixed main contact and first fixed auxiliary contact from a contacts closed position to a contacts open position, characterized in that during an opening operation of said disconnection unit the separation of said first movable main contact from said first fixed main contact takes place before the separation of said first movable auxiliary contact from said first fixed auxiliary contact, and further characterized in that the relative opening speed V between said first movable auxiliary contact and said first fixed auxiliary contact is greater than the relative opening speed V2 between said first movable main contact and said first fixed main contact.
Abstract:
The invention relates to a gas-insulated switchgear (GIS) (100) comprising a disconnector-earthing switch (DES), the DES (10) comprising a housing (11), a disconnector piston (30) and an earthing piston (40), the DES (10) further comprising an actuating mechanism (20) arranged to operate the pistons (30, 40) to place them in three configurations, namely where both the disconnector piston (30) and earthing piston (40) are in the retracted position, where the disconnector piston (30) is in the extended position and the earthing piston (40) is in the retracted position, and where the earthing piston (40) is in the extended position and the disconnector piston (30) is in the retracted position, comprising a crankshaft (28) and two piston rods (23, 24), the crankshaft (28) being arranged to rotate about a crank axis perpendicular to the plane parallel to the axes of the pistons (30, 40) and which intersects the axes of the two pistons (30, 40), the DES arranged such that whenever a piston (30, 40) is in the retracted position it is flush with the housing (11).
Abstract:
An electrical apparatus (10) for electrical energy handling comprises a housing (12) with at least one insulation space (16), in which an electrical component (14) is arranged and which contains an insulation medium (22) surrounding the electrical component (14). The insulation medium (22) comprises an organofluorine compound and at least one further gaseous component. Apparatus (10) further comprises a gas flow generating device (24) for flowing an initial gas mixture, containing the organofluorine compound and at least one further component of the insulation medium, out of the insulation space (16) through an outlet opening (26) arranged in the housing (12). A substance recovery device (30) downstream of outlet opening (26) comprises a separator (34) for separating the organofluorine compound from the at least one further component of the initial gas mixture, the separator (34) being a liquefaction device (36) for liquefying and/or solidification device for solidifying the organofluorine compound.
Abstract:
Dispositif de sectionnement pour séparer ou connecter deux parties d'un circuit électrique triphasé, destiné à être disposé dans une enceinte d'un poste GIS. Il comporte: trois paires de contacts électriques ayant chacune un contact mobile et un contact fixe, les deux contacts étant aptes à prendre une position ouverte ou une position fermée du circuit électrique par translation relative des contacts selon un axe de déplacement; pour chaque paire de contacts, un dispositif télescopique de guidage du contact mobile selon l'axe de déplacement, le dispositif de guidage ayant une partie fixe solidaire du contact fixe et une partie mobile coulissante par rapport à la partie fixe et portant le contact mobile, les contacts électriques de la paire étant reliés électriquement entre eux via le dispositif de guidage; un dispositif de commande de la partie mobile de chaque dispositif de guidage pour amener le dispositif de guidage en extension dans une position ouverte et une position fermée; pour chaque dispositif de guidage, des moyens de transmission de mouvement reliant le dispositif de commande et la partie mobile de chaque dispositif de guidage. Le dispositif de commande est monté rotatif par rapport à un axe de rotation, afin qu'une rotation du dispositif de commande autour de l'axe de rotation entraine une translation du contact mobile de chaque paire de contacts selon l'axe de déplacement par l'intermédiaire des moyens de transmission de mouvement.
Abstract:
A switch comprises a first switching assembly (la) in a first metal enclosure (2a) and a second switching assembly (lb) in a second metal enclosure (2b). The two metal enclosures (2a, 2b) are electrically insulated from each other as well as from ground. This allows arranging a plurality of metal-enclosed switching assemblies in series while avoiding excessive electrical fields in any of them.