Alstom Technology Limited

General Electric Technology Gmbh

Didier Rodrigues

Denis Frigiere

Frank Jacquier

Jean Marc Willieme

Jean-Marc Willieme

Vincent Royot

A current-interrupter device () comprising a circuit breaker () including a first stationary conductive support () carrying both a stationary arcing contact () and a movable arcing contact (), and also carrying a movable permanent contact (), the movable arcing contact () and the movable permanent contact () being electrically connected to the first stationary support (), and a disconnector () including a second stationary conductive support () carrying a disconnector contact (), and wherein:

Electrical tripout device integrating a circuit breaker and an isolator

A high- or medium-voltage circuit breaker, in which a movable contact () is moved in sliding in order to separate stationary contacts () from its sliding surface (). In accordance with the invention, the stationary contacts () have switching portions () that separate from the movable contact more or less simultaneously as a result of a setback () in the movable contact (), thereby causing two simultaneous switching arcs to appear (), which arcs are extinguished much more quickly than a single arc, before the current is transferred to the conventional arcing contacts (). This disposition enables the stationary contacts () and their environment to be less exposed to damage.

Medium- or high-voltage circuit breaker or isolator, provided with improved fixed contacts, and method of use

An electrical contact device of the contact finger type for high nominal current between a first part that is conductive and a conductive surface of a second part comprising a flexible rod connected to a first connection element for mechanical and electrical connection to the first part, a contact portion applied on the conductive surface of the second part, and at least one metal contact blade placed at a first end between a first end of the flexible rod and the first part. The flexible rod is conductive, and the at least one metal blade is connected at its second end to the second end of the flexible rod by a second mechanical and electrical connection element.

Electrical contact device of the contact finger type with a strong nominal current

A protection device for providing protection against the particles generated by an electric arc when a first electrically conductive part and a second electrically conductive part of an electrical connection unit are separated from each other, the protection device including at least one protection element disposed in the proximity of the place at which the first part and the second part separate in order to form a shield against the particles.

Device for protection against particles generated by an electric switching arc

The method of the invention makes it possible to cool electrical switchgear operating at medium voltage and high current, such as a circuit breaker. The method consists in inserting serially two heat pipes () inside said switchgear, putting a first end (A) of the first heat pipe () in the hot portion of the hot portions (A,C) of the circuit breaker () and a second end (B) of the first heat pipe () in a portion that is cooler (A) of the hot portions (A,C). The other heat pipe () is put between the cooler of the hot portions (A) and a cooler part of the circuit breaker (). A particular application is provided for medium-voltage, high-current circuit breakers.

Cooling method for cooling medium-voltage electrical switchgear using integrated heat pipes, and a system using said method

A device including a phase-change heat-transfer fluid cooling mechanism to cool a sheath in which is placed switchgear such as a circuit breaker. An evaporator is thus created which is connected to condensers that are placed on a roof of the sheath. The device can be for application to a medium-voltage high-current electrical installation. The device requires little maintenance and only consumes a reduced amount of energy, or even no energy.

Growing community of inventors

Serpaize, France

Didier Rodrigues