General Electric Technology Gmbh

Ge Vernova Infrastructure Technology LLC

Ge Infrascructure Technology Llg

Jérôme Laurent

David Berard

Cyril Gregoire

Ludovic Darles

Quentin Dominique Louis Rognard

Andrew Chovanec

Quentin Rognard

Thomas Tometich

Chase Colton Peltier

Serge Bachelard

Keith McLaughlin

A high-voltage circuit breaker. The high voltage circuit breaker filled with insulating gas having a main axis A, including arcing contacts and an insulating nozzle, wherein an insulating gas flowing from a storage chamber and heated by an electric arc between the two arcing contacts is partitioned into a first gas flow and a second gas flow conducted outside of the insulating nozzle from opposite directions toward a main gas chamber, wherein the first gas flow flows through a first intermediary gas chamber and the second gas flow flows through a second intermediary gas chamber and is partitioned in a first portion directed to the main gas chamber and a second portion directed to an exhaust gas chamber, characterized in that the first portion of the second gas flow is smaller than the second portion of the second gas flow.

Circuit breaker comprising an improved gas flow management

The present application concerns a circuit breaker including a movable contact, a driving rod slidably mounted in the circuit breaker, a linkage mechanism for driving the movable contact, a pivoted driving fork rotatably mounted in the circuit breaker which cooperates with the driving rod through the cooperation of a primary pin provided on the driving rod and a primary slot provided on the driving fork, a driven lever connecting the driving fork to the movable contact, and wherein the driving rod supports a secondary pin which cooperates with a secondary slot of the driving fork when the driving rod in a position between a predetermined position and an extreme opened position of the circuit breaker.

Circuit breaker comprising an improved linkage mechanism

Provided herein is an electric arc-blast nozzle for a circuit breaker comprising a median part internally defining an axial electric arc cut-off passage and formed with a first dielectric material, first and second end parts formed with the first dielectric material and extending on either side of the median part and being intended to receive first and second arc contacts being axially moveable in relation to each other. The nozzle further comprises a sheath that is disposed on the external surface of the first end part and on a portion of the external surface of the neck-forming median part, said portion having the same radial external section than the first end part, is formed with a second dielectric material different from the first dielectric material and is obtained from a second composition comprising a thermoplastic polymer chosen from either a polysulfone or a polyetherimide, but not comprising fibrous reinforcements.

Electric arc-blast nozzle with improved mechanical strength and a circuit breaker including such a nozzle

The invention concerns a double-motion circuit breaker comprising primary and secondary movable contacts slidingly mounted within primary and secondary holders, wherein the primary movable contact comprises a tulip and a contact cylinder attached thereto, and the secondary movable contact comprises a pin for engaging the tulip but no counter-contact for engaging the contact cylinder. The circuit breaker also has a non-linear linkage mechanism with a pin and slot mechanism, and a fixed dielectric shield provided on the secondary holder. During disconnection, the linkage mechanism is preferably arranged to move the pin more than the tulip, proportionally to their maximum stroke, so as to quickly bring the pin tip within the fixed dielectric shield, whereafter the tulip moves more than the pin. This circuit breaker is cheaper, lighter and can be disconnected more quickly.

Circuit breaker with simplified non-linear double motion

A contact arrangement for a Pre-Insertion Resistor (PIR) wherein a control rod is arranged to move a movable contact, against the force of a biasing member, into temporary connection with a PIR. The control rod comprises a tulip with a plurality of resilient fingers and having a first diameter where it is able to mechanically couple to a latching ring on the movable contact, and a second diameter where the tulip is deformed with the fingers deflected inwards, once the resistance to movement exceeds a predetermined value, wherein the latching ring is able to pass over the tulip to decouple the movable contact from the control rod. The contact arrangement is particularly suited for a PIR arranged for connection in parallel to the interrupter of a gas-insulated switchgear (GIS) circuit breaker.

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Villeurbanne, France

Jérôme Laurent