Interrupting chamber of a moving contact and blowing nozzle mobile operations independently, switch by-pass and hvdc in the station comprising such a conversion hvdc.

摘要

The present invention relates to a new kinematics of the moving contact (s) (s) and of a blast nozzle of the gas in a chamber of a current interruption. According to the invention, it performs an operation is independent of a moving contact (3) and of the blast nozzle of an arc (5) such that: • in the closed position of the contacts, the nozzle (5) is in a position referred to as the confinement zone (c) according to which it extends at least between the corona discharge arrester (40, 41) surrounding the contacts (2, 3), • during an opening operation, the nozzle (5) remains substantially in its position of the confinement at least until the (s) (s) of the movable contact (s) (3) 1 (in) t reaches (s), the open position (o), • once the opening operation carried out and any arcing current is cut off, the nozzle (5) is moved in a position called the back (r) in which it is removed from the insulating space.