Abb Schweiz Ag

Abb Research Ltd.

Abb S.p.a.

Markus Abplanalp

Felix Greuter

Antonello Antoniazzi

Ralf-Patrick Suetterlin

Lise Donzel

Nitesh Ranjan

Arthouros Iordanidis

Thorsten Strassel

Pierantonio Arrighetti

Jan Carstensen

Rudolf Gati

Thierry Delachaux

Matthias Bator

Alexey Sokolov

Judith Kessler

Roberto Cameroni

Gabriel Lantz

Pierre Corfdir

Thomas Wulf

Davide Riboni

Yacine Babou

Felix Rager

Judith Marold

A switch pole for a low voltage switching device including an insulating casing defining an internal space with a contact area and an arc extinguishing area of said switch pole, a fixed contact assembly and a movable contact assembly positioned in said contact area and including, respectively, one or more fixed contacts and one or more movable contacts, which can be mutually coupled or uncoupled, and an arc chamber positioned in said arc extinguishing area and including a plurality of parallel arc-breaking plates and a terminal arc-breaking element, which includes a plate portion arranged in parallel to said arc-breaking plates and having one or more through openings and an elongated portion protruding from said plate portion and extending across said arc-extinguishing area, from said plate portion towards said fixed contact assembly.

Low voltage switch pole

A switching apparatus includes first and second electric terminals, and first and second electric branches comprising one or more switching devices. The second electric branch is electrically connected in parallel with said first electric branch between said first and second electric terminals. The switching apparatus comprises a current blocking circuit adapted to block a current along said second branch. The current blocking circuit includes a first switching device of solid-state type and a first electronic circuit electrically connected in parallel to said first switching device of solid-state type. The switching apparatus further comprises a current limiting circuit adapted to limit a current flowing along said second electric branch. Said current limiting circuit is electrically connected in series with said current blocking circuit and it includes a second switching device of solid-state type and a second electronic circuit electrically connected in parallel to said second switching device of solid-state type.

Hybrid switching apparatus for electric grids

A switching device for low-voltage or medium-voltage applications including: one or more electric poles; for each electric pole, at least a fixed contact and at least a movable contact, each movable contact being reversibly movable between a coupled position, at which the movable contact is coupled with a corresponding fixed contact, and an uncoupled position, at which the movable contact is separated from the fixed contact, wherein a separation gap is present between the movable contact and the fixed contact, when the movable contact is in the uncoupled position. The switching device includes, for each electric pole, at least an arc-diverting element made of electrically insulating material.

Switching device

A switching apparatus for an electric grid includes first and second electric terminals, each having first and second electric branches having a plurality of switching devices. The first electric branch includes a first switching device switchable between open and closed states, which is driven by a current flowing along said first switching device and without receiving an external control signal or an external power supply, said first switching device switching from said closed state to said open state, when the current flowing along said switching apparatus exceeds a corresponding predefined threshold value or when the changing rate of the current flowing along said switching apparatus exceeds a corresponding predefined threshold value or upon a combination of these two conditions. A second switching device is connected in series with the first switching device and is switchable between closed and open states upon receiving a corresponding input control signal.

A DC circuit breaker including a pair of arcing contact members for holding an arc, an interaction element, adapted for interacting with the arc in dependence of whether the arc is in a first or second state such that the arc voltage drop in the first state is lower than the drop in the second state, a resonance branch coupled in parallel to the contact members thereby forming a resonance circuit adapted for letting a resonance branch current Ioscillate thereby inducing oscillations of an arc current I, wherein the resonance branch includes a coupling element for coupling the resonance branch with the arc, such that the arc is brought to the first state when the current Iin the resonance branch has a first direction, and that the arc is brought to the second state when the current Iin the resonance branch has a second direction.

Passive resonance DC circuit breaker

A sensor unit for the measurement of a current in a conductor () comprising at least one magnetoresistive sensor () located at a radial distance from the outer surface of the conductor () is disclosed, wherein the conductor () has a circular cross-section, and wherein it comprises at least one auxiliary coil () for the generation of a bias magnetic field (H) to the magnetoresistive sensor () strong enough for inducing magnetic saturation in the magnetoresistive sensor () continuously during the whole current measurement process. Further the use of such a sensor and a method for measuring the current in the conductor using such a sensor unit are disclosed.

Magnetoresistive sensor arrangement for current measurement

A high voltage switching device includes a current interruption assembly having at least one vacuum chamber, a fixed contact assembly having a first fixed contact and a second fixed contact positioned inside the vacuum chamber, and first and second movable-contact assemblies including a first movable contact and a second movable contact, respectively. A single mechanism actuates the first and second movable-contact assemblies between a first position and second position. In the first position, the first and second movable contacts are electrically coupled with the first and second fixed contacts, respectively. And in the second position, the first and second moveable contacts are electrically separated the same. The first movable contact and the second movable contact move, along a reference axis, one towards the other or away from the other based on the actuating mechanism.

High-voltage switching device

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Baden-Dättwil, Switzerland

Markus Abplanalp