MAGNETIC DRIVE SYSTEM FOR A SWITCHGEAR

摘要

The invention relates to a magnetic drive system for a switchgear having a magnet yoke (2, 3) in which a solid armature (8) made of magnetic material is guided in a linearly displaceable manner between two opposing end positions, having at least one permanent magnet (6, 7) for generating a magnetic flux in the magnet yoke (2, 3), and having at least one coil by which the armature (8) can be moved back and forth between the end positions thereof, the armature (8) being provided with elongated hollow channels (11, 12, 13) for preventing eddy current losses. For an essentially low-friction control of the armature (8), a sliding element (slide foil 16, slide element 18) is arranged between the displaceable armature (8) and a permanent magnet surface pointing in the direction of the armature (8).