Abb Technology Ag

Hitachi Energy Switzerland Ag

Abb Schweiz Ag

Hitachi Energy Ltd

Abb Power Grids Switzerland Ag

Yoann Alphand

Toufann Chaudhuri

Stephane Isler

Philippe Noisette

Philippe Haeberlin

Marc Blanc

Philippe Häberlin

Harry Zueger

Yann Cuenin

A dual-powered railroad vehicle is provided. The vehicle includes a combustion engine having a first cooling circuit; a traction transformer having a second cooling circuit; and at least one radiator for dissipating thermal energy to surrounding air. The first cooling circuit and the second cooling circuit are configured to dissipate thermal energy via the at least one radiator. Further, a method for operating a dual-powered railroad vehicle is provided.

Cooling system and method for a dual-powered railroad vehicle

The disclosure relates to an arc chute for a medium voltage circuit breaker having a housing, at least one stack of a plurality of substantially parallel metal plates arranged in the housing, the at least one stack defining a first axis in parallel to a stacking direction; an arc space arranged in the housing, wherein the arc space is adapted to allow an arc to expand therein; and at least one arc quenching plate disposed in the housing, wherein the arc guiding plate has at least one surface which has a surface plane extending in parallel to the first axis. Further, the present disclosure relates to a circuit breaker having a switching unit with a first switch contact and a second switch contact, movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the first switch contact is separated from the second switch contact, and an arc chute. Additionally, the disclosure relates to a polymer plate selected of a group containing a flame retardant polymer, a flame retardant polymer having a flame retardant filler, and a polymer having a flame retardant filler as an arc quenching plate.

Arc chute, circuit breaker for a medium voltage circuit, and use of a polymer plate

A switch unit for a DC circuit is disclosed, which includes a first switch contact, and a second switch contact, which is movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the second switch contact is separated from the first switch contact. A positioning element to position an arc chute on the switch unit, the arc chute comprises a plurality of substantially parallel metal plates, the positioning element arranged to guide an arc, which is created between the first switch contact and the second switch contact, into the arc chute in an arc displacement direction in order to be extinguished. At least one gas emitting element, wherein at an interruption operation of the circuit breaker at its nominal current, the arc between the first switch contact and the second switch contact vaporizes a portion of the gas emitting layer.

Switch unit, method for assembling a switch unit, and circuit breaker for a medium voltage circuit

A switch unitfor a voltage circuit breaker that includes a first switch contactand a second switch contact. The first switch contactis movable between a first position in which the first switch contactcontacts the second switch contact and a second position in which the first and second switch contactsare separated from each other. Further, a positioning element to position an arc chuteon the switch unit. The arc chuteincludes at least two stacksof a plurality of substantially parallel metal plates. The switch unit includes a first connection devicecapable to electrically connect the first switch contactto a predetermined metal plateselected of the most proximal 25% metal plates of the first stack. A second connection devicecapable to electrically connect the second switch contact to a predetermined metal plateselected of the most proximal 25% metal plates of the second stack

Switch unit and circuit breaker for a medium voltage circuit

An arc chute for a DC circuit breaker is disclosed which includes at least one stack of a plurality of substantially parallel metal plates, the at least one stack defining a first axis A in parallel to a stacking direction; an arc space adapted to allow an arc to extend along the first axis, wherein a second axis traversing in parallel to the metal plates the at least one stack and the arc space substantially orthogonal to the first axis. Further, an arc-chute housing having at least one side wall, the at least one side wall being substantially parallel to the second axis, wherein the distance between the at least one sidewall and the metal plates is, for example, less than 5 mm, such as less than 2 mm.

ARC chute for a circuit breaker, circuit breaker and method for assembling an ARC chute

Circuit breaker

Growing community of inventors

Fegersheim, France

Yoann Alphand