| 摘要 |
A magnetic drive system for switchgear has a magnet yoke in which a solid armature made of a magnetic material is guided in a linearly displaceable manner between two opposing end positions. The magnetic drive system further has at least one permanent magnet for generating a magnetic flux in the magnet yoke and at least one coil by which the armature can be moved back and forth between the end positions thereof. The armature is provided with elongated hollow channels for preventing eddy current losses. So as not to excessively reduce the stability of the armature by the channels made therein, the channels in the armature are configured in a closed fashion on the circumference thereof.
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