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Load stepping switch

An on-load tap and switch technology, applied in electrical switches, resistor components, inductors, etc., can solve the problem of unsuitable transfer resistance, and achieve the effect of saving space, simple space and simple adaptation.

Active Publication Date: 2013-11-27
MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This changeover resistor is not suitable for the load selector types mentioned at the outset

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0017] figure 1 The individual helical wires 1 made of resistance wire are shown, and the individual helical wires electrically connected to each other via connectors 2 form a complete helical wire structure 3 .

[0018] Within the scope of the invention, it is also possible to provide only a single continuous helical wire 3 which is simply bent in the deflection position. With both embodiments, a serpentine structure is achieved, in which the helical wire elements run approximately parallel.

[0019] The free contact ends 4 and 5 serve to electrically connect the helical wire structure; this will be explained in more detail. To adapt to various resistance values, different wire lengths and wire diameters can be selected; for mounting, clamping is preferably performed in two regions by means of a corresponding two-part resistor holder 6 made of insulating material and fixed helical wire 3 .

[0020] figure 2 Two different perspective views of such a modular resistor hold...

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PUM

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Abstract

The invention relates to a load stepping switch for switching over between taps of a control winding of a stepped transformer without interruption, wherein fixed step contacts are arranged in at least one horizontal plane in a wall of an insulating-material cylinder or on an insulating-material frame and are electrically connected to the taps, wherein a rotatable switching shaft is arranged in the center, said switching shaft having, for each horizontal plane of fixed step contacts on a contact support, mechanical contacts which can each be connected to the fixed step contacts, and wherein at least one contact on the contact support is electrically connected to the load discharge line by means of at least one interposed transition resistor (Rü1, Rü2). The transition resistor (Rü1, Rü2) comprises, in each case, a meandering wire helix (3) which is clamped and fixed by means of at least two resistor holders (6) which are composed of insulating material. The at least two resistor holders (6) of each transition resistor are attached to a shell-like resistor support (10) which is composed of insulating material and the resistor support (10), for its part, is attached to the switch pillar with which it shares a contour.

Description

technical field [0001] The invention relates to an on-load tap changer for switching between taps of a regulating winding of a tapped transformer without interruption. Background technique [0002] WO 99 / 60588 discloses an on-load tap-changer of the so-called load selector type. The on-load tap changer has an insulating material cylinder as a housing, and stationary tap contacts, which are electrically connected to the taps of the regulating winding to be connected, are arranged circularly in horizontal planes in the insulating material cylinder wall. A rotatable switching shaft is arranged in the insulating material cylinder, which has mechanical contacts on the contact carrier for each horizontal plane of the fixed tap contacts, each mechanical contact being able to make contact with the fixed tap contacts respectively. At least one movable contact on the contact support is directly connected to the load lead; and at least another contact on the contact support is connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/00
CPCH01H9/0044H01F29/04H01C1/014H01H9/0016
Inventor C·伯格尔T·霍特纳M·雅塔P·莱德雷尔S·雷科普夫K·施莱普R·施特伦佩尔
Owner MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG