| 摘要 |
The invention relates to a tap-changer for low power switching on a step transformer. Said tap-changer is closed on the top by a tap-changer head which comprises a head flange wherein a drive shaft, which is guided from the outside, is mounted. An upper gear step and a hand wheel drive can be mounted on said head flange by means of a compatible hand wheel drive flange without requiring additional components, in particular, a special tap-changer head.
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