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High-voltage big-current multistage positive and negative adjustment cage-type tap changer

A tap-changer and high-current technology, which is applied in the direction of electric switches, circuits, transformers, etc., can solve the problem that the non-excitation cage tap-changer cannot meet the needs of double million distribution transformers, so as to improve the ground insulation ability, The effect of reducing the height of the switch and increasing the ability to pass current

Inactive Publication Date: 2016-01-20
SHANGHAI HUAMING POWER EQUIP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a double million (that is, one million Kw, one million V) distribution transformer that can adapt to the problem that the existing off-excitation cage tap changer cannot meet th

Method used

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  • High-voltage big-current multistage positive and negative adjustment cage-type tap changer
  • High-voltage big-current multistage positive and negative adjustment cage-type tap changer
  • High-voltage big-current multistage positive and negative adjustment cage-type tap changer

Examples

Experimental program
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Example Embodiment

[0024] See figure 1 with figure 2 , The high-voltage large-current multi-stage forward and reverse adjustable cage-type non-excitation tap changer shown in the figure includes a mounting flange 100, and a static contact mounting cage 200 is installed at the bottom of the mounting flange 100.

[0025] The static contact installation cage 200 consists of upper, middle, and lower support rings 210, 220, 230 and the circumference that are arranged axially and evenly distributed on the outer periphery of the upper, middle and lower support rings 210, 220, and 230. , The lower support ring 210, 220, 230 is composed of 12 insulating slats 240 fixedly connected.

[0026] A tap drive mechanism 300 is installed on the top of the mounting flange 100. The tap drive mechanism 300 has exactly the same structure as the tap drive mechanism in the existing multi-stage forward and reverse cage-type non-excitation tap changer. Go into details.

[0027] The switch mandrel 400 driven by the tap drive m...

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PUM

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Abstract

The invention discloses a high-voltage big-current multistage positive and negative adjustment cage-type tap changer. The tap changer comprises an installation flange, a static contact installation cage body, multiple static contacts connected with coil taps of a transformer, a tapping driving mechanism installed on the installation flange, a switch core shaft, and multiple moving contact assemblies. The switch core shaft is arranged in the center of a circle of the static contact installation cage body and is driven by the tapping driving mechanism. The moving contact assemblies are installed on the switch core shaft and synchronously revolve along the switch core shaft. Based on the positive and negative voltage regulation wiring principle, multiple static contacts are divided into at least two layers of static contact groups and axially distributed on the static contact installation cage body along the static contact installation cage body. The corresponding static contacts among layers are conductively connected. According to the invention, numbers of the coil taps of the transformer are reduced; current carrying ability of the switch is improved; and current carrying ability of the switch can be easily changed as required.

Description

technical field [0001] The invention relates to the technical field of transformer tap-changers, in particular to a high-voltage, high-current, multi-stage forward and reverse cage-type non-excitation tap-changer. Background technique [0002] Cage-type off-excitation tap-changers are widely used in modern distribution transformers. Conventionally used off-excitation cage-type tap-changers involve fewer gears, lower voltages, and lower currents. It cannot meet the needs of double million (ie million Kw, million V) distribution transformers. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a double million (that is, one million Kw, one million V) distribution transformer that can adapt to the problem that the existing off-excitation cage tap changer cannot meet the needs of the double million (million Kw, million V) distribution transformer. That is, the high-voltage and high-current multi-stage forward and revers...

Claims

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Application Information

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IPC IPC(8): H01H9/00H01F29/00
CPCH01H9/0011H01F29/00H01H9/0016
Inventor 李萍张阳宋文信柴孟东
Owner SHANGHAI HUAMING POWER EQUIP CO LTD