Dry type high-voltage current transformer

A high-voltage current and transformer technology, applied in the direction of inductors, transformers, transformer/inductor coils/windings/connections, etc., can solve problems such as shedding, reduced safety of current transformers, and large ladder differences

Inactive Publication Date: 2018-08-03
HAIAN RUIHUA TEXTILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the insulation wrapping layer of this kind of transformer is wrapped on the tubular structure, the thickness is relatively thick and the step difference is large, which will cause the insulation layer to slide and fall off.
Reduce the safety of current transformers

Method used

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  • Dry type high-voltage current transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention is composed of a connector 1 , a connection terminal 2 , a primary conductor 3 , an insulating wrapping layer 4 , a secondary winding 5 , a box body 6 , a base 7 and an outer insulating sheath 8 . The primary conductor 3 adopts a rod-shaped or tubular conductor, and several secondary windings 5 ​​are placed in the ground screen part of the insulating wrapping layer 4, and are firmly fixed with the base 7 and the outer insulation 8. The primary conductor acts as a conduction current, passing through The secondary coil makes the secondary coil generate induced current. The connector 1 is a component that connects the two terminals of the primary conductor 3, has a certain mechanical strength, strengthens the function of fixing and provides space for switching current. When it is solid, it only plays the role of strengthening and fixing, and can be simplified into a plate shape; when it is hollow, the conductor is tubular, and there are conductors in ...

Embodiment 2

[0020] The primary conductor 3 is made by adding a conductor inside a tubular conductor, and several secondary windings 5 ​​are placed in the ground screen part of the insulating wrapping layer 4, and are firmly fixed with the base 7 and the outer insulation 8. The connector 1 is a member connecting the four terminals of the primary conductor 3, has a certain mechanical strength, and is a hollow structure. All the other structures are the same as in Example 1.

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PUM

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Abstract

The invention belongs to a high-voltage electric appliance apparatus, particularly a dry type high-voltage current transformer used for current measurement and protection for a power grid of 35kV or above. The dry type high-voltage current transformer comprises a primary conductor, an insulating wrapping layer, several secondary windings, an outer insulation part, a box body, a bottom table, a coupler and the like; the secondary windings are placed in an earthing screen part of the insulating wrapping layer and firmly fixed with the box body and the outer insulation part; one or more stressedtubular framework buffer layers are added in the middle part of the insulating wrapping layer, so that the insulating layer can be stressed in a dispersed manner, thereby preventing falling off or sliding of an insulating material on a framework; and by virtue of the primary insulating structure, the primary insulating stability and shock resistance are greatly improved.

Description

technical field [0001] The invention belongs to a high-voltage electrical device, in particular to a dry-type high-voltage current transformer used for current measurement and protection in a 35kV and above power grid. Background technique [0002] At present, there is a dry-type high-voltage current transformer with internal and external insulation made of organic synthetic materials on the market. Its structure is that the primary winding passes through the inner hole of the tubular rigid framework made of non-magnetic material, and the tubular rigid wrap around insulation. Because the insulation wrapping layer of this kind of transformer is wrapped on the tubular structure, the thickness is relatively thick and the step difference is large, which will cause the insulation layer to slide and fall off. Reduce the safety of the current transformer. Contents of the invention [0003] The purpose of the present invention is to provide a high-voltage current transformer wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/30H01F27/28H01F27/32
CPCH01F38/30H01F27/28H01F27/324
Inventor 不公告发明人
Owner HAIAN RUIHUA TEXTILE TECH CO LTD
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