Actuator for a tap changer
US-9324493-B2 · Apr 26, 2016 · US
On-load tap changer
US9251971B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9251971-B2 |
| Application number | US-201214001064-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 6, 2012 |
| Priority date | Mar 12, 2011 |
| Publication date | Feb 2, 2016 |
| Grant date | Feb 2, 2016 |
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Abstract
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An on-load tap changer for uninterrupted changeover between winding taps of a tapped transformer has a separate selector for power-free preselection of the winding tap to be switched to, a separate load changeover switch for the actual load changeover from the previous to the preselected new winding tap, a rotatable drive shaft, and a force accumulator with at least one force-accumulator spring that for each load changeover is initially stressed by the drive shaft and after triggering thereof abruptly actuates the load changeover switch. A gear operatively connected with the drive shaft can load the force accumulator. A first mechanical freewheel between the gear and the force accumulator temporarily decouples the force accumulator from rotation with the drive shaft in such a manner that the force accumulator can be stressed with a delay in time after the start of actuation of the drive shaft.
First claim
Opening claim text (preview).
The invention claimed is: 1. An on-load tap changer for uninterrupted changeover between winding taps of a tapped transformer, the tap changer comprising: a separate selector for power-free preselection of the winding tap to be switched to; a separate load changeover switch for the actual load changeover from the previous to the preselected new winding tap; a rotatable drive shaft; a force accumulator with at least one force-accumulator spring that for each load changeover i…
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- H01H9/0027Primary
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9251971B2 cover?
- An on-load tap changer for uninterrupted changeover between winding taps of a tapped transformer has a separate selector for power-free preselection of the winding tap to be switched to, a separate load changeover switch for the actual load changeover from the previous to the preselected new winding tap, a rotatable drive shaft, and a force accumulator with at least one force-accumulator spring…
- Who is the assignee on this patent?
- Albrecht Wolfgang, Hoepfl Klaus, Wrede Silke, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01H9/0027. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 02 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).