| AREVA T & D SAS Patent applications |
| Patent application number | Title | Published |
|---|
| 20110073566 | WINDING FOR A CONTACT OF A MEDIUM-VOLTAGE VACUUM CIRCUIT-BREAKER WITH IMPROVED ENDURANCE, AND AN ASSOCIATED CIRCUIT-BREAKER OR VACUUM CIRCUIT-BREAKER, SUCH AS AN AC GENERATOR DISCONNECTOR CIRCUIT-BREAKER - A copper-based winding implementing a copper-based winding of diameter that is typically greater than 90 mm, designed to generate a magnetic field in an electrical contact for a medium-voltage vacuum circuit-breaker. The winding is constituted by a hollow cylinder including helical slots about its longitudinal axis and opening out both into the hollow and to the exterior of the cylinder, winding in which the space between two consecutive slots that form a turn is empty of material and the width of each initial slot is less than 1 mm. | 03-31-2011 |
| 20110006041 | CONTACT FOR A MEDIUM-VOLTAGE VACUUM CIRCUIT-BREAKER WITH IMPROVED ARC EXTINCTION, AND AN ASSOCIATED CIRCUIT-BREAKER OR VACUUM CIRCUIT-BREAKER, SUCH AS AN AC GENERATOR DISCONNECTOR CIRCUIT-BREAKER - A vacuum circuit-breaker wherein one contact body is made with two windings implanted concentric with one another and connected electrically in parallel. The second winding is in the form of an solid part with an annular ring. The circuit-breaker increases the axial magnetic field (AMF) and distributes it uniformly over the contact surface so that arc extinction is improved for high short-circuit currents, typically greater than 63 kA. | 01-13-2011 |
| 20110000887 | CONTACT FOR A MEDIUM-VOLTAGE VACUUM CIRCUIT-BREAKER WITH REINFORCED STRUCTURE, AND AN ASSOCIATED CIRCUIT-BREAKER OR VACUUM CIRCUIT-BREAKER, SUCH AS AN AC GENERATOR DISCONNECTOR CIRCUIT-BREAKER - A vacuum circuit-breaker wherein at least in one of the contacts at least one stud is used as a spacer, and is disposed between the mechanical connection portion and the circular plate of the contact body in such a manner as to avoid the collapse thereof during a closing operation of the vacuum circuit-breaker, and in the closed position the contacts can withstand very high compression forces, typically greater than 700 kg-force or 2 t-force. | 01-06-2011 |
| 20100326958 | RELIEF VALVE FOR DISCHARGING A DIELECTRIC GAS BETWEEN TWO VOLUMES OF A HIGH-VOLTAGE OR MEDIUM-VOLTAGE INTERRUPTING CHAMBER - A relief valve for discharging a dielectric gas between two volumes (V | 12-30-2010 |
| 20100259275 | DEVICE FOR DETECTING AND LOCATING ELECTRIC DISCHARGES IN FLUID-INSULATED ELECTRICAL EQUIPMENT - A device for detecting and locating at least one electric discharge in equipment insulated by fluid contained in an electrically-conductive housing. The equipment includes a plurality of grounding lines connected between the housing and ground. The device includes a plurality of Rogowski coil type current detectors and a mechanism synchronously comparing signals delivered by the current detectors. The coil of each detector is placed around a respective one of the lines. Each detector delivers a signal representative of current flowing in the line, with occurrence of an electric discharge giving rise to a sudden variation in the current, and with electric discharge being located within an inside zone of the housing situated in proximity of the line that is surrounded by the detector that was first to deliver the sudden variation of current. | 10-14-2010 |
