摘要:
An electric power distribution arrangement comprising an electric conductor (4) for carrying a high voltage, a first pair of bodies (6, 13) provided on opposite sides of the conductor (4) as seen in a first direction cross-wise to a longitudinal axis of the conductor (4), and a second pair of bodies (4, 14: 4, 15: 4, 4) provided on opposite sides of the conductor (4) as seen in a second direction cross-wise to said longitudinal axis. The bodies (4, 6, 13, 14, 15) of said first and second pair of bodies are arranged to be electrically disconnected from said conductor (4), and the spacing between the bodies of said first pair (6, 13) is larger than the spacing between the bodies of said second pair (4, 14: 4, 15: 4, 4). At least one of said bodies (4, 6, 13, 14, 15) of at least one of said first and second pair comprises a second current conductor (4), and at least one of said bodies of at least one of said first and second pair comprises a wall element (13, 14, 15) of an encapsulation (2) inside which the conductor (4) is arranged. In a region in which said conductor (4) is surrounded by said first pair (6, 13) and second pair (4, 14: 4, 15: 4, 4) said conductor (4) has a substantially oval or substantially elliptical shaped outer periphery, and the cross section of said conductor (4) has a larger dimension in the first direction than in the second direction.
摘要:
The invention relates to a switchgear comprising at least two panels, at least one of which is provided with a switch-disconnector. Each panel encompasses at least one front wall, a rear wall, a bottom wall, a top wall, a wire feed, and busbars which embrace at least one panel. Each panel is configured in a modular fashion and forms a first module. One respective support element to which one respective switch-disconnector can be fixed is fastened between the front wall and the rear wall of each module, said support element being connected in a fixed manner to the front wall and/or the rear wall. The switch-disconnectors and the support element of both modules are located on the same level and are configured in an identical manner.
摘要:
The invention relates to a current conductor for an electrical device, especially a bus bar conductor (10a, 10b, 10c) for an electrical medium voltage installation. Said current conductor comprises a center section (11, 30) from an electrically conducting material for current conduction, electrical components, for example connecting contact pieces, and components from an insulating material, e.g. carrier elements, being attachable thereto. Field-controlling shielding sections (19, 20) from an electrically conducting material are contiguous to the center section (11, 30) at both sides and cover at least said center section. The shielding sections (19, 20) also cover the inserted electrical components.
摘要:
A switching device (102, 104, 106) for electric power distribution, electrically connectable to an electrical conductor (114, 116, 118), the switching device comprising a breaker (126, 128, 130), the breaker being electrically connectable to the electrical conductor, and an at least partially electrically conductive housing (120, 122, 124) to which the breaker is mounted. The switching device provides a current path between the breaker and the electrical conductor. The housing houses at least one guiding member (150, 152) for operating the breaker. The housing houses a first part (131) of the current path between the breaker and the electrical conductor, the first part of the current path being electrically connected to the breaker, wherein the switching device comprises a switch (144) for electrically connecting the breaker to the electrical conductor, the switch comprising a switch element (146) movable to a first position in which the switch element is electrically connected to the first part of the current path and to the electrical conductor, movable to a second position in which the switch element is disconnected from the electrical conductor and electrically connected to the first part of the current path and to a grounded element (192), and movable to a third position in which the switch element is disconnected from the electrical conductor and from the grounded element. A switchgear for electric power distribution comprising at least one such switching device.
摘要:
A switching device (102, 104, 106) for electric power distribution, electrically connectable to an electrical conductor (114, 116, 118), the switching device comprising a breaker (126, 128, 130) electrically connectable to the electrical conductor, and an at least partially electrically conductive housing (120, 122, 124) to which the breaker is mounted, the housing having an outer surface (134).The breaker comprises at least one electrically conductive first contact (202) and one electrically conductive second contact (204), the second contact being movable and in relation to the first contact and in relation to the housing, and when the first and second contacts are in contact the breaker is in a closed position, and when the first and second contacts are separated the breaker is in an open position. The switching device is arranged to provide a current path between the breaker and the electrical conductor, and the housing houses at least one guiding member (150, 152) for operating the second contact (204), the at least one guiding member being movable in relation to the housing, wherein the at least one guiding member comprises a biasing assembly (151) arranged to bias the second contact against the first contact when the breaker is in the closed position. The biasing assembly comprises a plurality of biasing members (156, 158) comprising a first biasing member (156) and a second biasing member (158). A switchgear for electric power distribution comprising at least one such switching device.
摘要:
The invention relates to a contact system for a short-circuiting device in a medium-voltage or high-voltage switchboard plant, comprising one stationary contact piece (10) each per phase, connected to the mains voltage (high voltage or medium voltage), and one mobile contact piece (36, 43) each per phase. Every stationary contact piece (31) is surrounded by an insulating material which the mobile contact piece (36, 43) is able to penetrate when the contact is closed.