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Tap changer and vacuum interrupter for a tap changer of this kind

A vacuum switch tube and vacuum switch technology, applied in the direction of electric switches, high voltage/high current switches, inductors, etc., can solve the problems of expensive and component consumption, and achieve the effect of less space, simple structure, and simple operating mechanism

Inactive Publication Date: 2013-10-16
MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages lie primarily in the large space required for the vacuum interrupters themselves and the associated actuating structures
Furthermore, this known construction is relatively expensive due to the high component outlay

Method used

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  • Tap changer and vacuum interrupter for a tap changer of this kind
  • Tap changer and vacuum interrupter for a tap changer of this kind
  • Tap changer and vacuum interrupter for a tap changer of this kind

Examples

Experimental program
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Embodiment Construction

[0014] A known tap changer is shown in FIG. 1 . The tap changer has a first load branch in which a vacuum switch MSV is arranged as a main contact a and the switching resistor R in parallel with it a and the vacuum switch tube TTV used as a resistive contact a . The second load branch very similarly has the vacuum switch MSV b and another switching resistor R in parallel with it b and vacuum switch tube TTV b . The known tap changer therefore has two vacuum switching units per load branch, thus a total of four vacuum switching units per phase.

[0015] FIG. 2 shows the switching sequence of such a known tap changer when switching from winding tap n to winding tap n+1. The initial position in which tap n is switched on corresponds to the position shown in FIG. 1 of the individual switching elements. The switching is performed in the following steps:

[0016] - open MSV a ;

[0017] - Closed TTV b ;

[0018] -Turn on TTV a ;

[0019] - closed MSV b ;Switch end. ...

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Abstract

The invention relates to a tap changer for switching over between winding taps of a tap transformer without interruption, wherein two load branches are provided for each phase which is to be switched and each load branch has a vacuum switching contact, which acts as a main contact and, parallel to said vacuum switching contact, at least one series circuit comprising a transition resistor and in each case a further vacuum switching contact. In this case, in each case one vacuum switching contact of each load branch is structurally combined to form a single vacuum interrupter having two separate, fixed contacts (5, 8), which can be selectively connected, and a single moving contact (4).

Description

technical field [0001] The invention relates to a tap changer for uninterrupted switching between winding taps of a tap changer, the tap changer having a vacuum interrupter. The invention also relates to a novel vacuum interrupter which is particularly suitable for such a tap changer. Background technique [0002] A tap changer is known from DE 2021575 which has a total of four vacuum interrupters per phase. In each of the two load branches there is a vacuum interrupter as main contact and a further vacuum interrupter as resistance contact connected in series with the switching resistor. When switching the load from the current winding tap n to the new preselected winding tap n+1 without interruption, first the main contact on the disconnected side is opened, and then the resistive contact on the receiving side is closed, so that both A compensation current limited by the switching resistor flows between stages n and n+1. After opening the currently closed resistance cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/00H01F29/04
CPCH01H2033/6668H01H9/0038H01F29/04H01H9/00
Inventor W·阿尔布雷希特C·哈默W·哈特曼S·科斯A·拉沃尔R·伦兹A·斯特泽尔J·泰克曼N·温策尔
Owner MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG