Abstract:
A switching device (1) for an encapsulated electric power distribution switchgear comprising a switch (10), an electrically conductive housing (20) to which the switch is mounted, and which housing (20) comprises an opening (24) that leads into the housing (20). The switch comprises a first electric contact (12) connected to a first conductor (16) and a second electric contact (14) connected to a second conductor (18), the second contact being movable in relation to the first contact and in relation to the housing. The further comprises an operating shaft (30) of electrically insulating material being rotatable about its longitudinal axis Y in relation to the housing, and which is inserted into the housing via the opening (24), and an actuator member (40) located inside the housing and having a first end (42) coupled to the shaft and a second (44) end coupled to the second contact (14). The actuator member is made of an electrically insulating material. The shaft (30) extends through the opening (24) and into the housing without directly contacting the housing (20) and is supported in the housing (20) by the actuator member. The actuator member (40) is movably supported in the housing (20) at a connection area (26) that forms an interface (27) between the actuator member and the housing. The interface is located at a distance D from the longitudinal axis Y of the shaft that is longer than a distance d between the longitudinal axis Y of the shaft and a circumferential edge (23) that delimits the opening (24) in the housing, which first and second distances are measured in the same radial direction in relation to the longitudinal axis Y.
Abstract:
La présente invention décrit un dispositif sectionneur de déconnexion ou connexion électrique haute-tension comprenant: - un contacteur femelle (2); - un contacteur mâle (1) mobile selon une direction longitudinale (D) relativement au conducteur femelle de sorte à garantir un mode fermé, un mode de déconnexion et un mode ou vert du sectionneur, - un premier jeu de contacteurs-ressort (3) disposés sur une circonférence interne du contacteur femelle, afin d'assurer en mode fermé du sectionneur un contact électrique entre les contacteurs mâle et femelle. Au moins un deuxième jeu de contacteurs-ressort (5) est disposé sur une deuxième circonférence interne du contacteur femelle, afin d'assurer en mode fermé du sectionneur un deuxième contact électrique entre successivement une extrémité longitudinale du contacteur mâle (1), au moins un conducteur et les dits contacteurs-ressort (5), ledit conducteur comprenant au moins deux blocs (6, 7) dont au moins un est mobile selon la direction longitudinale relativement aux dits contacteurs mâle et femelle en mode de déconnexion (ou connexion) du sectionneur.
Abstract:
The invention relates to a medium voltage switchgear with an assembled pole part with integrated three-position switch, with pole part frames made of insulating material, between which a vacuum-interrupter is mounted, wherein the vacuum interrupter is provided with a fixed contact and a moving contact, so that one end of the frame is provided with a first support in order to fix the vacuum interrupter at the moving contact side, and fixation means for the fixed contact side at the other end of the frame. In order to to implement high technical functionality during reduction of the number of separate parts at same time, and additionally to implement a lower transmission resistance into the interconnection, the electrical connection between the movable part of the vacuum interrupter and the movable part of the two- or three-position switch is a mechanically flexible conductor element, and that the insulating pole part frames are provided with guiding means for the linear movable contact part of the two- or three- position switch, which are integrated into the pole part frames or the pole part frame arrangement.
Abstract:
The invention deals with a method and device for controlling the ignition of electric arc in the intercontact break of a disconnector during the operation of opening and closing the disconnector used in gas-insulated switchgear. The invention is characterized by the control of the supply of additional pulses of electromagnetic radiation energy to the intercontact break of the disconnector depending on instantaneous voltage values uS(t) measured on the incoming side of the disconnector or depending on instantaneous voltage values uS(t) on the incoming side of the disconnector and instantaneous voltage values uL(t) on the load side of the disconnector, with defined voltage threshold values (U1, U2) and preset time boundary values (T1, T3) during opening the disconnector or (T2, T4) during closing the disconnector, while the preset time values (T1, T3) include time moments in which the supply of energy pulses to the intercontact break is stopped, and the preset time values (T2, T4) include time moments in which supply of energy pulses to the intercontact break starts.
Abstract:
L'invention se rapporte à un dispositif d'entraînement (30) d'un ensemble électriquement conducteur (6) d'un appareillage électrique de coupure du type sectionneur, le dispositif comprenant un arbre rotatif d'entrée (32) ainsi qu'un organe de sortie (34) comportant un point d'attache (22) à l'ensemble électriquement conducteur, le point d'attache étant mobile à translation selon une direction (11) de déplacement dudit ensemble électriquement conducteur. Selon l'invention, le dispositif comporte un système mécanique (40) de transmission de mouvement entre le point d'attache (22) et l'arbre (32), ce système mécanique étant conçu de manière à obtenir une vitesse variable du point d'attache (22) lors d'une rotation à vitesse angulaire constante de l'arbre (32), au cours d'une opération d'ouverture et/ou au cours d'une opération de fermeture.
Abstract:
Disconnector for switchgear, having a first contact position, in which an electrical contact is provided between a main terminal and a first terminal, and a second contact position, in which an electrical contact is provided between the main terminal and a second terminal, the disconnector comprising a connector body which is moveable in a first direction between the first and second position and provided with an end portion which is extendable in a direction substantially perpendicular to the first direction for providing a contact force between the end portion and the first, second or main terminal, a first operating mechanism which is arranged to move the connector body between the first and second position, and a second operating mechanism which is arranged to extend the end portion of the connector body when the disconnector is in either the first or second contact position, in which the end portion of the connector body is provided with a conical inside surface and the second operating mechanism comprises a first shaft provided with a first conically shaped end body positioned inside the conical inside surface of the end portion of the connector body.
Abstract:
An electric switch including a stationary contact that is annular. The switch comprises a gastight enclosure (2), a conductor bar (8) of axis (D), a stationary contact (12) presenting a contact zone (22) of substantially annular shape, a switch element (40), e.g. on the conductor bar, that is movable in the axial direction of the axis (D) between a first position in which it penetrates in part into the stationary contact (12) to establish electrical contact between the conductor bar (8) and the stationary contact (12), and a second position in which it interrupts said contact. The stationary contact, which is in the form of a ring that is circular or elongate, e.g. elliptical, surrounds the conductor bar (8), at least in part.
Abstract:
An isolating switch is to be adapted to the heavy currents occurring during busbar changes at low operating voltages. To this end, an auxiliary contact pin (3), which is located in a counter-contact (2) in the known manner and acts as a preliminary contact, is fitted with an auxiliary sliding contact (11). The auxiliary contact pin (3) runs off this auxiliary sliding contact (11) after the counter-contact member has made contact. Thus the rated current is conducted solely along the main current track. (The auxiliary contact pin runs off the auxiliary sliding contact.)