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US 9,543,096 B2Granted
On-load tap changer
AssigneeMaschinenfabrik Reinhausen GmbH
InventorsAlfred Bieringer, Christian Hammer, Martin Pankofer, Rolf Strempel, Andreas Stocker
Life of this patent
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Abstract
The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption according to the preamble of the first patent claim. The general inventive concept lies in actuating both the selector contact unit and the switching means for uninterrupted load switching by means of a common motor drive without an energy store being connected therebetween.
Claims19
An on-load tap changer for uninterrupted switching between different winding taps of a tapped transformer, wherein
- at least one selector contact unit with a respective plurality of fixed selector contacts, which are respectively electrically connected with the individual winding taps, is arranged along a line,
- the fixed selector contacts are actuatable by two longitudinally displaceable movable selector contacts,
- wherein for the uninterrupted switching two vacuum interrupters are provided for each phase,
- a motor drive for introducing a drive movement into the on-load tap changer is provided, and
- the at least one selector contact unit and the switching means for the uninterrupted switching are so directly actuatable by the common motor drive that introduction of the drive movement of the motor drive into the at least one selector contact unit and the switching means for the uninterrupted switching takes place without interposition of a force-storing device.
2 more elements
Dependencies are inferred from the claim text.