摘要:
The invention relates to a fuse system for a switchgear assembly, especially for a medium voltage switchgear assembly. The fuse system comprises a plurality of fuses which correspond to the number of phases, every fuse having a tripping bar that projects from the face of the fuse under the effect of the force of a spring when the fuse comes into action. A sealing body, with a spring arrangement interposed, pushes a sealing head into the interior of a receptacle receiving the fuse. A two-armed lever is received on the sealing head, one arm covering the tripping bar of the fuse and the other arm unlatching a tripping mechanism which actuates a power switch.
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 subject of the invention is a device for suppressing very fast transients (1,1a, 1b), applicable in protecting electric and/or electric power equipment, and especially transformers operating in electric power substations and in wind power plants, connected in the supply network circuit downstream of the circuit breaker and upstream of the protected equipment. The device according to the invention is a component of an induction character (1, 1a, 1b), comprising a high-frequency magnetic core (2) arranged around the current-conducting lead (3). On the magnetic core (2) there is wound at least one winding (4, 4a) with at least one pair of terminals (6) used for connecting at least one damping resistor (7). The inventive device contains an insulating body (8) in which there is located a magnetic core (2) together with a damping resistor (7) and a winding (4, 4a) or contains an insulating body (8a) in which there is located a magnetic core (2) together with a damping resistor (7), a winding (4, 4a) and a section of a current-conducting lead (3).
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.
摘要:
The invention relates to a load disconnecting circuit with a housing that has a first housing section, which houses the drive, and has a second housing section, which houses a fixed contact element and a longitudinally extended moving contact element. The second housing section has a longitudinal extension adapted to the moving contact element. Field-control rings are placed on the second housing section while encircling it, of which the first are arranged in the vicinity of the fixed contact element and the second are arranged in the vicinity of the switch-off position of the moving contact element. Via a respective connection conductor, the first field-control ring is connected to the potential of the fixed contact element, and the second field-control ring is connected to the potential of the moving contact element when in its switch-off position.
摘要:
Safety arrangement for a switchgear assembly, having a cylindrical insulating container, which consists of insulating material and is open at a first end, and into which a fuse cartridge or fuse can be inserted, the first end of said fuse cartridge or fuse being electrically conductively connected to a first contact arrangement and the second end being electrically conductively connected to a second contact arrangement. The fuse cartridge is fixedly connected at its first end to a closure apparatus for the insulating container, which closure apparatus has a sealing body (41) and a sealing head (43) connected to the sealing body (41). A spring arrangement (82, 83) is provided between the sealing body (41) and the sealing head (43).