Alstom

Areva T & D Sas

Olivier Grejon

Jean-Pierre Dupraz

Bruno Luscan

Xavier Allaire

Alain Fanget

Bernard Raynaud

Michel Nauche

Serge Paolozzi

Alain Libaud

Michel Collet

A pressurized gas circuit-breaker pole includes a first enclosure or pole head having a first envelope with a first connecting flange including a circular orifice. The envelope contains a first mobile assembly terminating in a coupling member coaxial with the orifice. A second enclosure constituting an insulative column includes a second envelope having a second connecting flange with a circular orifice. The second envelope contains a second mobile assembly having a link for maneuvering the first mobile assembly and its end including complementary arrangements for coupling it with the coupling member. The connecting flange of each enclosure has an annular elastomer seal fixed to the corresponding connecting flange and through which the corresponding mobile assembly passes. The seal of each enclosure provides, during assembly of the flanges and coupling of the internal mobile assemblies, a sliding seal. The seal is broken on completion of assembly.

Pressurized gas circuit-breaker pole that can be assembled and disassembled without significant loss of gas

The single-phase circuit-breaker comprises at least one interrupting chamber formed by an insulating tube filled with an insulation gas, and it comprises at least one current transformer whose secondary is disposed in air around the primary at one end of the tube. The primary is at the high voltage electrical potential of the phase and is constituted by an annular metal support. The secondary is subjected to a high voltage electrical potential that is practically equal to the potential of the primary. The current transformer is thus integrated in the circuit-breaker, and the measurement electronics associated with the secondary can be located in air close to the secondary.

Gas-insulated circuit-breaker with an integrated electronic current transformer

Growing community of inventors

Sathonay Camp, France

Olivier Grejon