CN201886890U

CN201886890U - Current transformer with multi-turn structure

Info

Publication number: CN201886890U
Application number: CN 201020607471
Authority: CN
Inventors: 潘滨; 李国宾; 顾新松
Original assignee: TAIKAI MUTUAL INDUCTOR CO Ltd SHANDONG
Current assignee: TAIKAI MUTUAL INDUCTOR CO Ltd SHANDONG
Priority date: 2010-11-15
Filing date: 2010-11-15
Publication date: 2011-06-29
Anticipated expiration: 2020-11-15

Abstract

The utility model relates to a current transformer with a multi-turn structure, which can provide two types of transformation ratios for a use unit of the transformer. The current transformer is mainly characterized by adopting a high-voltage shell made of aluminium alloy material; and two primary conductors coaxially pass through the high-voltage shell, and are respectively connected with the two ends of the shell by small conducting bars. Since the scheme is adopted, compared with the prior art, in the current transformer with the multi-turn structure provided by the utility model, the shell made of the aluminium alloy material is adopted, eddy current loss is reduced, and the shell can be directly used as a return conductor, so that external in-series conducting belts are omitted, the material is saved, and the external space of the transformer is reduced; and for the current transformer, the installation is convenient and the use is safe.

Description

Multiple circle structure current transformer

(1) technical field

The multiple circle structure current transformer of the utility model belongs to the high-tension current inductor apparatus field.

(2) background technology

The tradition once current transformer of two circle structures is to realize concatenation function by the mode that the outside installs conductive strips additional.But the current transformer external shape complexity of this kind structure is installed inconvenience; And, also need on the instrument transformer body, shading ring be installed in order to reduce conductive strips surface field intensity, increased manufacturing cost again.Therefore be badly in need of developing reducing core dimensions, reduce product energy consumption, realize the current transformer of sustainable development.

(3) summary of the invention

To be that research and development are a kind of can realize two no-load voltage ratio functions to the purpose of this utility model, do not need the outside to install the current transformer of conductive strips additional again.

The technical scheme in the invention for solving the technical problem is: the current transformer body adopts aluminum alloy material, and when electric current passed through the body, aluminium alloy can effectively reduce eddy current loss, reduces the instrument transformer temperature rise; Two Primary Conductor adopt an aluminum pipe and an aluminium bar respectively, the aluminum pipe punching is by the current transformer body, adopt an aluminium bar to pass aluminum pipe again, isolate with insulating case between aluminum pipe and the aluminium bar, at aluminum pipe and aluminium bar two ends the primary connection plate is installed, the primary connection plate is connected with the body or disconnects, and realizes current transformation.

The beneficial effects of the utility model are under the prerequisite that satisfies the conventional instructions for use of current transformer, have effectively reduced head eddy current loss, have reduced the volume of current transformer, have saved raw material.

(4) description of drawings

The multiple circle structure current transformer end view of Fig. 1.

The multiple circle structure current transformer front view of Fig. 2.

The local amplification plan view of the multiple circle structure current transformer of Fig. 3.

Among the figure, terminal block 1. in parallel, 2. series connection busbar, the 3. body, 4. insulating sleeve, 5. base, 6. series wiring plate, 7. aluminum pipe, 8. aluminium bar.

(5) embodiment

Below in conjunction with accompanying drawing parts of the present utility model and assembling are described further.

Referring to Fig. 1, Fig. 2, Fig. 3, the utility model is made up of the body (3), insulating sleeve (4) and base (5) three parts.Wherein adopt aluminum alloy material at the body (3); Two Primary Conductor adopt an aluminum pipe (7) and an aluminium bar (8) respectively, and aluminum pipe (7) punching is by the current transformer body (3), and aluminium bar (8) passes aluminum pipe (7) again; Terminal block in parallel (1) is installed at the aluminum pipe two ends, and series wiring plate (6) is installed at the aluminium bar two ends; Be connected with the body by series connection busbar (2) at current transformer left side series wiring plate (6).The instrument transformer user by selecting connects the terminal block in parallel (1) or the series wiring plate (6) on current transformer right side, realizes two kinds of current transformations.

Advanced practicality of the present utility model shows as the saving material, reduces the instrument transformer space outerpace, and easy for installation, easy to use.

Claims

1. answer circle structure current transformer for one kind, form by the body, insulating sleeve, base, it is characterized in that: two Primary Conductor adopt an aluminum pipe and an aluminium bar respectively, the aluminum pipe punching is by the high pressure body, aluminium bar pierces into aluminum pipe, isolates with insulating case between aluminum pipe and the aluminium bar, at aluminum pipe and aluminium bar two ends the primary connection plate is installed, the primary connection plate is connected with the body or disconnects, and realizes current transformation.

2. multiple circle structure current transformer according to claim 1 is characterized in that: two Primary Conductor are coaxial passes along body axis.

3. multiple circle structure current transformer according to claim 1, it is characterized in that: the body adopts the aluminum alloy materials welding fabrication.