摘要:
The present invention relates to a switch for a medium voltage or high voltage switchgear. The switch comprises a first fixed contact, a second fixed contact, a moveable contact, at least one flexible link, and a contact drive. In an on state of the switch the moveable contact is configured to be in a position that connects the first fixed contact to the second fixed contact. In an off state of the switch the moveable contact is configured to be in a position where the first fixed contact is not connected to the second fixed contact. The at least one flexible link is connected to the moveable contact. The at least one flexible link engages with the contact drive. The contact drive is configured to pull the moveable contact via the at least one flexible link and the contact drive is configured to push the moveable contact via the at least one flexible link. Activation of the contact drive in a first mode is configured to move the moveable contact to the position such that the switch is in the on state. Activation of the contact drive in a second mode is drive is configured to move the moveable contact to the position such that the switch is in the off state.
摘要:
The invention relates to an overload clutch (100) for medium voltage switchgears, with a torque introducing cog or chain wheel (6), provided with near to the circumferential line arrangend balls (3), caught in openings of the cog or chain wheel (6) on one side, and caught in openings of a disc spring (2) on the opposing side, which couples by that the introducing torque to a shaft (1) and an kinematic chain arrangement for medium voltage switchgears, with mechanical coupling between a drive and the switching elements of switches, wherein torque overload is prevented by overload clutch. In order to overcome functional disadvantages in a very efficient way, the invention is, that the aforesaid shaft is connected torque proof with the disc spring, and that the disc spring is strained axially by an adjustable axial tension of the shaft with the cog or chain wheel.
摘要:
The invention relates to a cable fixation element in low voltage compartments with an openable ring element, through which a number of cables can be aligned in parallel, wherein the cable fixation element has means, by which the cable fixation element can be fixed on a cable mounting board, according to claim 1. In order to to enhance the construction of such cable fixation element in low voltage compartments in such, that no additional space is needed to open the cable fixation elements, and that a high amount of parallel aligned cables can be fixed, the invention is, that the ring is openable in that way, that the physical opening direction is perpendicular to the long axis of the cables, which have to be placed in the fixation element.
摘要:
The invention relates to a rotary auxiliary switch for medium voltage switchgears, with a lever with a cam track , along which a driving element is movable, according to the preamble of claim 1. In order to realize, that the lever has to be covered in such a way, that the operator cannot touch the application, the invention is, that the lever is split into two complementarily lever components (a, b) in such, that the two components create a hinge, when they are mechanically mounted, and that the resulting cam track is also splitted into two cam track parts, in such, that a partly first cam track which is located in the first lever component (a), and the partly second cam track is located in the second lever component (b).
摘要:
The present invention relates to a medium or high voltage switchgear (1) with a three position switch. The three position switch comprises a tube shaped conductor (91) for connection of a cable and the three position switch comprises an earthing contact (100). The earthing contact is arranged inside of and coaxial to the tube shaped conductor.
摘要:
The invention relates to a rotary auxiliary switch for medium voltage switchgears, with a lever with a cam track , along which a driving element is movable, according to the preamble of claim 1. In order to realize, that the lever has to be covered in such a way, that the operator cannot touch the application, the invention is, that the lever is split into two complementarily lever components (a, b) in such, that the two components create a hinge, when they are mechanically mounted, and that the resulting cam track is also splitted into two cam track parts, in such, that a partly first cam track which is located in the first lever component (a), and the partly second cam track is located in the second lever component (b).
摘要:
The invention relates to a cylindrically shaped contact element arrangement for a three-position-switch in medium or high voltage gas insulated switchgears, which provides a disconnector switch and an earthing switch, which further consist of one movable conductor and three contacts, which are busbar contact, center contact and earth contact, with a cylindrical shaped contact element arrangement for connecting tube shaped contacts which are orientated in axial direction and with spring means for providing contact forces, and that the cylindrical shaped contact element arrangement consist of multiple identical contact elements, which are hold in cylindrical position by a support structure, according to the preamble of claim 1. In order to create a contact system with possibly low ohmic restistance, which is furthermore compact, the invention is, that spring means for providing the radially expanding contact forces, are located inside the cylindrical shape, represented by the contact elements arrangement.