Current transformer with low-voltage shielding function

A current transformer and low-voltage technology, which is applied in the direction of inductors, transformers/inductor coils/windings/connections, transformers, etc., can solve the problem of no shielding of secondary leads, achieve small partial discharge, high production efficiency, and improve The effect of work efficiency

Inactive Publication Date: 2018-08-28
DALIAN NORTH INSTR TRANSFORMER GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a current transformer with low-voltage shielding to solve the defect that the primary coil of the existing current transformer has no shielding to the ground and the secondary lead wire

Method used

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  • Current transformer with low-voltage shielding function
  • Current transformer with low-voltage shielding function
  • Current transformer with low-voltage shielding function

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] like figure 1 As shown, a current transformer with low-voltage shielding provided by the present invention includes an insulator 11 and a primary coil 5 and a secondary coil 4 encapsulated in the insulator 11. The primary coil 5 passes through the central hole of the secondary coil 4, and the two Both ends of the secondary coil 4 are provided with a low-voltage shielding device 9 below the primary coil 5 , and the secondary lead 8 of the secondary coil 4 is drawn out from the insulator 11 , and the secondary lead 8 is located below the low-voltage shielding device 9 .

[0025] A low-voltage shielding device 9 is added below the primary coil 5 and both ends of the secondary coil 4 to effectively ground the primary high-voltage shield within ...

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Abstract

The invention belongs to the technical field of current transformers, and particularly relates to a current transformer with a low-voltage shielding function. The current transformer comprises an insulator, a primary coil and a secondary coil, wherein the primary coil and the secondary coil are encapsulated in the insulator; the primary coil penetrates through a central hole of the secondary coil;low-voltage shielding devices arranged below the primary coil are arranged at the two ends of the secondary coil; each low-voltage shielding device comprises a metal wire weaving net, a metal wire and an embedded nut; a secondary lead of the secondary coil is led out from the insulator; and the secondary lead is arranged below the metal wire weaving net. According to the current transformer, high-voltage electric fields of the primary coil of the current transformer are shielded in the metal wire weaving nets in order to play a protective effect on the insulation; and meanwhile, the partial discharge level of a current transformer product is greatly improved after processing through a method.

Description

technical field [0001] The invention belongs to the technical field of current transformers, in particular to a current transformer with low-voltage shielding. Background technique [0002] At present, in the transformer industry, the current transformer low-voltage shielding production generally adopts the method of wrapping semi-conductive materials outside the secondary coil. It has more than 50 years of production experience in our country. With the continuous development of the process equipment industry, The shielding manufacturing process is also constantly improving. Compared with the more mature secondary coil of the transformer, there are still some imperfections in the process, that is, the semi-conductive material only shields the secondary coil, and the primary coil is connected to the ground and the secondary coil. Lead wires are not shielded, etc., and a more complete current transformer is urgently needed. Contents of the invention [0003] In view of the ...

Claims

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Application Information

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IPC IPC(8): H01F38/30H01F27/36H01F27/32
CPCH01F27/324H01F27/36H01F38/30
Inventor 李涛昌王仁焘赵阳武高琦初立成管永秋刘新海
Owner DALIAN NORTH INSTR TRANSFORMER GROUP
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