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Inverted type current transformer

A technology of current transformers and transformers, applied in the direction of inductors, transformers/inductor coils/windings/connections, circuits, etc., can solve problems such as increasing costs and affecting measurement accuracy, reducing economic costs, improving measurement accuracy, Practical effect

Inactive Publication Date: 2014-09-24
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Restricted by the structure, the existing cable-through current transformer can only be installed on one cable during installation. When there are two cables, this kind of transformer needs to use two transformer windings in parallel, which not only increases cost, and measurement accuracy is affected

Method used

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  • Inverted type current transformer
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Embodiment Construction

[0020] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.

[0021] An inverted current transformer includes a transformer winding 3 and a connection terminal 8, and the shape of the transformer winding is circular. A busbar hole 7 is formed on the axis of the transformer winding. The shape of the busbar hole is a combination of a circle and a cross shape, that is, the main body of the busbar hole is circular, and the four quadrant points of the circle are all made outward. Extended rectangular groove. The busbar hole can pass through a cable, or pass through a copper bar 2 . The lower part of the transformer winding is installed on the base 5 through the insulating support 4, and the terminal is installed on the base, and the transformer winding is electrically connecte...

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PUM

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Abstract

The invention relates to an inverted type current transformer. The current transformer comprises a transformer winding and a junction terminal, a bus hole for a copper bar or a single cable to pass through is formed in the axis of the transformer winding, the bus hole is in a shape of combination of a circle and a cross, the lower part of the transformer winding is mounted on a base through an insulated support, the base is provided with the junction terminal, and the transformer winding is electrically connected to the junction terminal through a conducting wire arranged in the insulated support. The inverted type current transformer provided by the invention is ingenious in design, novel in structure, reasonable in improvement and high in practicability, the transformer can be connected with a single cable, and can also be simultaneously connected with double cables, after the transformer is used, the economic cost can be greatly reduced, the measurement accuracy can be improved, the work efficiency can be improved, and the work safety can be ensured.

Description

technical field [0001] The invention relates to a current transformer in the field of electric power technology, in particular to an inverted current transformer. Background technique [0002] The existing cable-through type current transformer is made of insulating plastic, and a cable hole is formed inside the transformer winding. A small current is introduced into the corresponding equipment through the terminal block for current measurement by the equipment. Restricted by the structure, the existing cable-through current transformer can only be installed on one cable during installation. When there are two cables, this kind of transformer needs to use two transformer windings in parallel, which not only increases The cost is increased, and the measurement accuracy is also affected. Contents of the invention [0003] The object of the present invention is to provide an inverted current transformer that does not increase the cost and can ensure measurement accuracy whe...

Claims

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Application Information

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IPC IPC(8): H01F38/30H01F27/28H01F27/30H01F27/06
Inventor 赵冠桥王文强刘月婵周庆祝苏勇杨萌李香刘彦东杜艳杰张俊恒张怀砚王雅琳赵秀芳王妍张迪江宁
Owner STATE GRID CORP OF CHINA
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