A resistor for electric high-voltage apparatus and a method of mounting a resistor

A technology for high-voltage electrical equipment and resistors, which is applied to the installation/support of resistors, resistors, inductors, etc., which can solve the problems of large current of resistor elements and achieve the effect of ensuring insulation distance and compact design

Inactive Publication Date: 2009-08-12
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during this time, the current through the resistive element in the resistor is considerable

Method used

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  • A resistor for electric high-voltage apparatus and a method of mounting a resistor
  • A resistor for electric high-voltage apparatus and a method of mounting a resistor
  • A resistor for electric high-voltage apparatus and a method of mounting a resistor

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Embodiment Construction

[0054] figure 1 A resistor 10 installed in a three-phase tap changer according to the invention is shown. The resistor 10 shown in the figure comprises three resistor modules 100, one for each phase. The specific details of the tap changer are not described in detail here, but it needs to be mentioned that it especially includes a mechanical drive mechanism 12 with a mechanical energy storage system for driving the diverter switch 11 in the tap changer. These units and their functions are described in more detail in patent publication WO 2006 / 004527, PCT patent applications WO SE2006 / 050552 and WO SE2007 / 050187.

[0055] The above-mentioned units form a unit mounted on a frame structure 14 which in turn is integrated with two beams 15 arranged in parallel and made of electrically insulating material. It is connected across its upper part to a lifting device 16 . During installation, the entire unit is lowered into the tap changer housing (not shown here), which is filled wi...

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Abstract

A resistor (10) for electric high-voltage apparatus, especially for connection to a diverter switch (11) in an on-load tap changer for a high-voltage transformer. The diverter switch (11) and the resistor (10) are arranged in a housing with transformer oil. The resistor (10) comprises a number of resistor elements (101), wherein each resistor element comprises a resistive element (102), arranged in a frame (103), which are electrically interconnected by a connection member (30). The frames (103) are designed to enclose resistive elements (102) which comprise spring elements (105) formed from spirally wound resistance wire. The connection member comprises a connection plug (31). Method of mounting a resistor for electric high-voltage apparatus is described.

Description

technical field [0001] The invention relates to a resistor for high-voltage electrical equipment, in particular for a changeover switch for connection in an on-load tap-changer for a high-voltage transformer, wherein the changeover switch and the resistor are arranged in a housing containing transformer oil . Herein, high-voltage equipment means equipment of tens of kilovolts up to, for example, 800KV and higher. [0002] The invention also relates to a method of mounting such a resistor. Background technique [0003] A diverter switch included in a tap changer is usually used in connection with a transformer to support tapping at different voltage levels. This takes place with the selector connected to the transfer switch. When the power output of a transformer is changed from one voltage level to another, this is achieved by first connecting the selector to the tap point in the transformer winding corresponding to the new voltage level, while the changeover switch remai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C3/14H01C1/01H01C13/02H01F29/04
CPCH01C3/14H01F29/04H01C13/02H01C1/01
Inventor P·尼尔森D·森德奎韦斯特L·伦恩
Owner HITACHI ENERGY SWITZERLAND AG
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