摘要 |
The motor has a switching device for changing over from motor mode to braking mode, whereby in motor mode at least one field winding (14,16) is connected in series with an armature winding (12) in a motor circuit supplied with a motor supply voltage (22). In braking mode the field and armature windings form a closed braking circuit separated from the motor supply voltage, which also contains the secondary winding (30) of a mains-powered transformer (26b).
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