Contact for vacuum interrupter medium voltage reinforced structure, and circuit breaker vacuum interrupter, such as a breaker switch associated alternator

摘要

Contact (2, 3) Power for ampoule (1) of medium voltage vacuum extending along a longitudinal axis and comprising: - a part (20, 30) of mechanical connection extending along the longitudinal axis Y - a body (21, 31) contact comprising: - a first cylinder (8) gap comprises grooves (81) made spirally about its axis and opening at least on its outside, first cylinder being said hollow centering about the longitudinal axis and having one end attached to the portion of mechanical connection, being devoid of material the hollow (80) of the first cylinder constituting the first cylinder a first winding adapted to generate a magnetic field, - a plate (22, 32 ) circular same diameter as the exterior of the first hollow cylinder, said plate (22, 32) centered on the longitudinal axis and attached to the end of the first hollow cylinder opposite the joined portion being also mechanical connection; - at least one small column (7) different from (the) winding (s) and arranged in the hollow of the first cylinder (8), as support between the part (20, 30) of mechanical connection and the plate (22 , 32) circular contact so as to avoid the collapse of the latter during a closing operation and in the closed position of the vacuum body having (s) small (s) column (s) a electrical resistivity so that when circulating a given contact current, the amount of current flowing in the (s) small (s) column (s) is negligible compared to the current flowing in (the) winding (s) wherein the electrical contact (s) of small (s) column (s) (7) is (are) constituted (s) of a metal tube material filling (s) ceramic (s).