Abb Research Ltd.

Abb Technology Ag

Abb T&d Technology Ltd.

Roberto Cameroni

Klaus Bohnert

Lise Donzel

Philippe Gabus

Costante Piazza

Hubert Braendle

Markus Abplanalp

Alexey Sokolov

Judith Kessler

Libero Sfondrini

Vittorio Gargioni

Davide Riboni

Emiliano Centenaro

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

A gas-insulated switchgear device comprising a first casing housing: at least a first terminal for input/output connection; a disconnector unit comprising at least a first fixed contact operatively coupled to said first terminal and a corresponding first movable contact which can be electrically connected/disconnected with said first fixed contact, during operation of the disconnector unit; a circuit breaker unit electrically connected to said disconnector unit and comprising at least a couple of interruption contacts which can be actuated, during operation of said circuit breaker unit, between a circuit breaker closed position where they are electrically coupled and a circuit breaker open position where they are electrically separated; actuating means for operating said disconnector unit and said circuit breaker unit; a second casing operatively coupled with said actuating means, which houses said interruption contacts and on the outer surface of which at least said first movable contact is mounted; characterized in that said second casing is pivotally mounted inside said first casing so as to rotate said first movable contact during operation of said disconnector unit, said couple of interruption contacts being operatively coupled to said actuating means so as to be kept electrically coupled in said circuit breaker closed position and substantially still relative to each other during rotation of said second casing.

Gas-insulated switchgear device

A pole of a high- and/or medium-voltage circuit breaker, including an insulating housing, at least one, interruption chamber which is positioned inside the insulating housing and contains at least a moving contact and at least a fixed contact. A device for measuring the electric current flowing through the pole, and a dielectric gas, the particularity of which is the fact that said device for measuring the electric current flowing through the pole includes an optical current sensor arranged within a volume of the pole that is occupied by the dielectric gas.

Pole of a circuit breaker with an integrated optical current sensor

Growing community of inventors

Milan, Italy

Roberto Cameroni