摘要:
La présente invention décrit un système d'aide à la détection d'une défaillance d'un sectionneur, ledit sectionneur comprenant un premier dispositif de déplacement (4) configuré pour déplacer un élément (41) du sectionneur d'une première position amont à une première position avale, au moins un contact fixe (2) et au moins un contact mobile (3) entre une seconde position amont dans laquelle ledit contact mobile (3) est en contact avec ledit contact fixe (2) et une seconde position avale dans laquelle ledit contact mobile (3) est déconnecté dudit contact fixe (2), un second dispositif de déplacement (5) couplé audit premier dispositif de déplacement (4) de façon à emmagasiner de l'énergie dès la mise en mouvement dudit élément (41) de l'amont vers l'aval pour relâcher subitement ladite énergie emmagasinée afin de déplacer ledit contact mobile (3) de la seconde position amont en direction de ladite seconde position avale, ledit système d'aide à la détection comprenant : - une première butée (71) destinée à être fixée à une embase dudit.sectionneur de manière à être immobile lors d'un déplacement du contact mobile (3) et/ou dudit élément (41); - une seconde butée (72) destinée à être fixée audit contact mobile (3) ; - un corps (8) accouplable audit premier dispositif de déplacement (4) via un point d'attache (83) de façon à ce que ledit corps (8) et ledit élément (41) soient entrainables simultanément en mouvement par ledit premier dispositif de déplacement (4), 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 dudit 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 entre la première position amont et la première position avale, permettant ainsi à un indicateur de position (6) dudit élément (41) de signaler une défaillance.
摘要:
An accumulator mechanism having a forcible loading mechanism and accomplishing a space saving, and an on-load tap changer including same are provided. The accumulator mechanism includes a spring 26, a winding casing 24 slidable in a direction in which the spring 26 is compressed, and an accumulating casing 27 slidable in a direction in which the spring 26 is elongated. A crank 30 rotating in a manner linked with sliding of the accumulating casing 27, and, catches 31A, 31B holding the accumulating casing 27 and the crank 30 until the winding casing 24 compresses the spring 26 are provided in the interior defined by the winding casing 24 and the accumulating casing 27. An eccentric cam 22 is provided outside the winding casing 24 and the accumulating casing 27, is linked with the winding casing 24 from an exterior thereof through a swingable joint 23, and slides the winding casing 24 through the swingable joint 23 when rotated by the electric actuator mechanism.
摘要:
There are provided an energy-storing unit with a forcing mechanism and an on-load tap changing device provided with the same which employ an inexpensive and simple structure and which can suppress a loading torque to operate stably. A forcing mechanism built in an energy-storing unit includes a protrusion 8, a bearing 9, and a loading cam 17. Among those components, the protrusion 8 is attached to the bottom face of an eccentric cam 2, and the bearing 9 is attached to the tip of the protrusion 8. The loading cam 17 is an isosceles triangle having a vertex that is substantially 90 degrees, and is attached to the top face of an energy-storing case 5. The loading cam 17 becoming in contact with the bearing 9 causes a crank 6 to rotate through the energy-storing case 5, and feeds a catch 7 to a standby position.
摘要:
A linear actuating earthing switch configuration that moves movable contacts using linear motion in a single axis. The earthing switch includes a frame with a rail on a slide wall. A sliding carriage slides on the rail in a linear direction, the sliding carriage including a plurality of movable contacts. A spring surrounding a linear shaft provides a linear expansion force between the frame and the sliding carriage when the earthing switch is in an open position.
摘要:
An emergency opening device suitable for manually opening a switching device comprises: - striking rod means (5) for transmitting an opening-striking-force to an electromagnetic actuator which is operatively connected to electrical contacts of said switching device; - a guiding-housing (2) suitable for being placed on an external portion of a casing in which the switching device is housed, the guiding-housing being configured for slidably housing and guiding, along an operating direction, the striking rod means, - energy-storing-propelling-means(13) for propelling the striking rod means upon an external-triggering-command of an operator in order to impart the opening-striking-force to the electromagnetic actuator. The energy-storing-propelling-means are configured for imparting to the striking rod means along the operating direction a rectilinear snap movement having at least a kinematic parameter which is independent from the external-triggering-command.
摘要:
Control for a high-voltage/medium-voltage device comprising at least one actuator (6, 12) for opening/closing a switch of said device, a mechanism that can move a movable part of said switch and a force transmission element (8, 14) for transmitting a force between the actuator (6, 12) and said mechanism, said transmission element (8, 14) being formed by a flexible belt.
摘要:
A spring assembly (200) is provided for a yoke assembly (100) of an electrical switching apparatus including a housing (4), separable contacts (8) enclosed by the housing, and an operating mechanism (10) structured to open and close the separable contacts. The operating mechanism includes a pole shaft (12). The yoke assembly is coupled to the pole shaft and is movable among first and second positions corresponding to the separable contacts being closed and open, respectively. The spring assembly includes a number of first springs (202) having a first spring rate and being coupled to the yoke assembly, and a number of second springs (206) having a second spring rate and being coupled to the yoke assembly. The second spring rate is different than the first spring rate. The number of first springs and the number of second springs bias the yoke assembly toward the second position.