Abstract:
The present invention relates to a compartment (1) for a medium voltage gas insulated switchgear. The compartment comprises a plurality of metal walls (10, 20, 30, 40, 50, 60). The plurality of metal walls form outer walls of the compartment. At least one metal wall comprises at least one corrugation (11, 12, 21, 41) and/or at least one indentation (31, 32, 33). The at least one corrugation and/or at least one indentation is inherent to the at least one metal wall.
Abstract:
The present invention relates to a connection apparatus for a medium voltage switchgear compartment (10). The connection apparatus comprises an outer cone cable connection (20), and a cable connection block 30. The outer cone cable connection (20) is configured to connect to a compartment (10) of a medium voltage switchgear. The cable connection block (30) comprises an inner cone connection (31). The cable connection block (30) comprises also one or more inner cone cable connections (32). The inner cone connection (31) of the cable connection block (30) is configured to connect to the outer cone cable connection (20). The one or more inner cone cable connections (32) of the cable connection block (30) are configured to connect to one or more cables. Each of the one or more inner cone cable connections (32) is configured to connect to a different cable of the one or more cables.
Abstract:
Pole part (1) for a low-, medium- or high voltage circuit breaker, with an insert (2), e.g. a vacuum circuit breaker, in an insulating housing (9). In order to enhance the dielectric performance, as well as the effectivity of manufacturing steps with high reproductivity, the invention is that a compensation layer (3) is provided between the insert (2) and the housing (9), the compensation layer (3) consisting of a potting material on epoxy or polyurethane basis, with a shore hardness of 12 to 90 shore A. A method for manufacturing is also provided.
Abstract:
The present invention relates to a short circuit current detection device for a medium voltage or high voltage switchgear. The short circuit detection device comprises a reed contact (20), and a holder (100). The holder is configured to hold the reed contact. The holder is configured to be mounted with a defined orientation to a conductor (10) of a switchgear. At a location where the holder is mounted the conductor has a longitudinal axis. The conductor is configured to enable a current (11) to flow through the conductor in a direction of the longitudinal axis. The holder is configured to position the reed contact with respect to the longitudinal axis, such that when a magnitude of the current flow through the conductor exceeds a threshold current value the reed contact is configured to close.
Abstract:
The present invention relates to an earthing module (1) for a switchgear. The earthing module comprises a cylinder (10), a piston (20), a stored energy unit (40), and at least one photovoltaic cell (50). The cylinder is configured to connect to a part of a switchgear at earth potential. The piston is configured to move within the cylinder from a standby position to a released position along an axis of the cylinder. When in the released position the piston is configured to be in electrical connection with the cylinder. The stored energy unit is located within or associated with the earthing module such that activation of the stored energy unit is configured to move the piston from the standby position to the released position. One or more of the at least one photovoltaic cell is configured to activate the stored energy unit on the basis of radiation from an electrical arc of the switchgear impinging upon the one or more of the at least one photovoltaic cell.
Abstract:
The invention relats to a vacuum interrupter with a ceramic body and at least one tubelike inner shielding, which is located around the area of a fixed contact and a movable contact, wherein the ceramic body is vacuumtightly closed at it both ends with metal caps, according to the preamble of claim 1. In order to enhance the positioning of the aforesaid middle shielding and to secure it in its final positon with easy means, the invention is, that the ceramic body is provided at its inner surface with a diameter reducing integrated collar, and the shielding is provided with complementary outer bulges or convexities in its structure, adapted to that afroiesaid integrated collar in such, that the shiedling lies against one side of the aforesaid collar, and is fixed in that position at the opposed side of the collar with a ringformed countering element.
Abstract:
The present invention relates to a medium voltage gas insulated switchgear with several compartments, wherein a pressure and gastight compartment, containing the vacuum-interrupters. The aforesaid pressure and gastight compartment is made of several metal sheets (10, 20, 30, 110, 120, 130, 140, 150, 160, 310, 320, 330, 340, 350, 360, 410, 420, 430, 440, 450, 460). The metal sheets are provided with overlapping areas at the edges (35), at which the several metal sheet are connected together, in such, that the concerning overlapping areas fits complementarily together.
Abstract:
The present invention relates to a connection apparatus for a circuit breaker of a medium voltage switchgear. The connection apparatus comprises an electrical link (300, 320), and a cable connection box (200, 240). The electrical link is configured to connect to a circuit breaker compartment (100) of a medium voltage switchgear. The cable connection box is configured to connect to the electrical link. The cable connection box comprises two or more cable connection sockets (210) in a zig zag arrangement. The electrical link and the cable connection box are configured such that when the electrical link is connected to the circuit breaker compartment and the cable connection box is connected to the electrical link, a rear wall of the cable connection box faces a wall of the circuit breaker compartment and the two or more cable connection sockets face away from the wall of the circuit breaker compartment.