Contact for vacuum interrupter medium voltage arc cutting improved circuit breaker vacuum interrupter and, as a breaker switch associated alternator

摘要

electrical contact (2, 3) for vacuum interrupter (1) of medium voltage extending along a longitudinal axis and comprising: - a part of mechanical connection (20, 30) which extends along the longitudinal axis; - a contact body (21, 31) comprising: - a first recess (8) cylinder comprising slots (81) made in a helix about its axis and opening at least on the outside, first cylinder being said hollow centered on the longitudinal axis and having a portion integral with the mechanical connection end, lacking the hole (80) of the first cylinder of material, constituting the first cylinder a first winding adapted to generate a magnetic field; - a second winding (9, 10) mounted electrically in parallel with the first winding (8) and adapted to generate a magnetic field which is superimposed on the magnetic field generated by the first winding (8), wherein the electrical contact comprises: - a circular plate (22, 32) of the same diameter as the outside of the hollow cylinder said plate (22, 32) centered on the longitudinal axis and integral with the end of the first hollow cylinder opposite integral with the portion also being mechanical connection, in which the second winding is formed by a solid endpiece (10), comprising two cylindrical portions (100a, 100b) and an annular crown (102) is not closed on itself and centered on the two cylindrical portions ( 100a, 100b), each end (1020, 1021) of the crown (102) is not closed on itself secured by an arm (101, 103) with one of the cylindrical portions (100a, 100b), the arrangement being est a further part (10) such that the two cylindrical portions (100a, 100b) are entries in the longitudinal axis and the annular crown (102) arranged concentrically with the first winding (8), one of the cylindrical portions (100a) integral with the portion of mechanical connection (20) and being the other of the cylindrical portions (100b) integral with the circular contact plate (22), lacking the hole (80) of the first winding (8) and the space between the crown ring (102) and the two cylindrical portions (100a, 100b) of material.