摘要:
The present invention is the field of electrical elements, related to the technology for improving the connection performance of the static contact device for strong current in high voltage switches, especially for a type of static contact device for strong current in high voltage ground switches. It includes a base, with two Contact Pieces standing face-to-face on it and vertical to its upper end surface. Outside each of the two Contact Pieces, there is a supporting plate, the lower end of which is firmly fixed on the base. Two groups of coaxially stacking Belleville springs are set between each supporting plate and the contact piece on the same side. By way of setting two groups of Belleville springs on one side, the present invention enlarges the contact surface between the Contact Piece and the moving contact blade, effectively reinforcing the gripping for each other. Compared with the scheme in which a single group of Belleville springs is used on one side with equal pressure, this new scheme can prolongs the products' service life as well as ensure good connection performance of the static contact.
摘要:
A medium or high voltage switch has a first set of contact elements (13a, 13b, 13c) and a second set of contact elements (14a, 14b, 14c). Each contact element consists of an insulating carrier (15) carrying conducting elements (16). In the closed state of the switch, the conducting elements (16) align to form one or more current paths between terminals (8, 9) of the switch along an axial direction (A). For opening the switch, the contact elements are mutually displaced by means of two drives (18, 19) along a direction (D) perpendicular to the axial direction (A) with the conducting elements (16) mounted onto the contact elements by means of springloaded pins (161,162).
摘要:
In one aspect a meter disconnect relay is described that is comprised of a base, an actuator, a shuttle and one or more disconnect switches. The actuator can be situated within the base, wherein the base maintains a portion of the actuator stationary and allows a plunger of the actuator to move within the base. The shuttle can be at least partially comprised of non-conductive material and having one or more windows, wherein the shuttle is operably connected to and moved by the plunger of the actuator and wherein the shuttle can be moved within the base and at least a portion of the base provides a stop for movement of the shuttle. The one or more disconnect switches can be opened or closed by movement of the shuttle, wherein each disconnect switch is comprised of a rigid, conductive bridging section pivotally connected to a first face of one of the one or more windows in the shuttle, wherein the bridging section comprises at least two contacts; a leaf spring pivotally connected to a second face of the one of the one or more windows of the shuttle, wherein the second face of the window is opposite the first face of the window and the leaf spring applies force to the bridging section; and a conductive source portion having a source contact and a conductive load portion having a load contact, wherein a first and second contact of the at least two contacts of the bridging portion are caused to substantially simultaneously come in contact with and disconnect from the source contact and the load contact by movement of the shuttle.
摘要:
The invention relates to an electrical contactor 1, particularly for use in railways, having a stator 2 and an armature 3, said armature 3 being connected to a contact region 4a, 4b and being movable from a first to a second position during a switch-on and/or a switch-off process of the contactor, wherein the contact region 4a, 4b is connected in at least one of said positions to a counter-contact region 5a, 5b for closing an electrical circuit, wherein a pushing device 6 is connected to the armature, which pushing device can be rotated relative to the armature 3, wherein the pushing device 6 pushes the armature 3, during the movement from the first to the second position of the switch-on and/or switch-off process at least at times in a supporting manner. The invention also relates to a method for switching on and/or off an electrical contactor 1, comprising the following steps: moving an armature 3 by activating and/or deactivating a stator; accelerating a rotation of a pushing device 6, said pushing device 6 being connected to the armature 3; and transferring at least a portion of the kinetic movement energy of the pushing device 3 to the armature 3, in a phase of the switch-on and/or switch-off process, in which a contact region 4a, 4b connected to the armature 3 comes into contact with and out of contact with a counter contact region 5a, 5b to support the armature movement.