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On-load tap changer

A technology of on-load tap-changing and switching, which is applied in the direction of electric switches, electrical components, circuits, etc., and can solve problems such as inability to maintain switching time and inability to guarantee functions

Inactive Publication Date: 2014-05-14
MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise the function cannot be guaranteed and the required switching times cannot be maintained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 A three-phase on-load tap-changer 1 for a tapped transformer according to the invention is shown. An energy store 2 is arranged at the upper end of the on-load tap changer 1 . The energy store drives a drive shaft 3 configured as a threaded screw, in the upper region of which at least two cam disks 4 are fixedly arranged. Only one phase is always discussed in the description, but the embodiment according to the invention is suitable for any one of the three phases. The five vacuum photocells 6 and 7 can be opened or closed by means of a deflection device by rotation of the drive shaft 3 and the cam disk 4 fastened thereto.

[0018] Furthermore, the contact carrier 8 is mechanically connected to the drive shaft 3 . Depending on the direction of rotation, the contact carrier 8 can be moved vertically straight up or down without itself having to be rotated. The contact carrier 8 comprises a sleeve element 9 and at least one contact arm 10 . The sleeve element...

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PUM

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Abstract

The invention relates to an on-load tap changer consisting of an energy store, a drive shaft designed as a screw spindle, vacuum switching tubes and a contact carrier and vertically arranged tap contacts. Actuation of the vacuum switching tubes occurs in dependence on the contacts. According to the invention, the vacuum switching tubes are actuated via cam discs and deflection assemblies. In parallel, the contacts attached to the contact carrier are moved vertically by the drive shaft and the tap contacts are thus actuated.

Description

technical field [0001] The invention relates to an on-load tap changer. Background technique [0002] On-load tap-changers and load selectors are used in transformers to switch winding taps of the transformer under load and thus compensate voltage changes at consumers in a targeted manner. [0003] The on-load tap-changer disclosed, for example, by the publication DE 10055406 C1 usually comprises a selector for reactively preselecting the winding tap of the transformer to be switched to and for actually uninterrupted switching from the currently connected winding tap to the new preselected tap. Load converter on winding tap. At least two contact rails are provided in the selector, which are connected to corresponding winding taps. One contact track conducts current through the normally closed contacts, while the second contact track preselects the next winding tap to conduct current after load switching. The actual load switching takes place by means of vacuum interrupter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/00
CPCH01H9/0038H02P13/06
Inventor S·弗雷德
Owner MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG