CN202736723U - Bushing current transformer - Google Patents
Bushing current transformer Download PDFInfo
- Publication number
- CN202736723U CN202736723U CN 201220308565 CN201220308565U CN202736723U CN 202736723 U CN202736723 U CN 202736723U CN 201220308565 CN201220308565 CN 201220308565 CN 201220308565 U CN201220308565 U CN 201220308565U CN 202736723 U CN202736723 U CN 202736723U
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- CN
- China
- Prior art keywords
- current transformer
- bushing current
- magnetic conductor
- bushing
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Transformers For Measuring Instruments (AREA)
- Housings And Mounting Of Transformers (AREA)
- Insulators (AREA)
Abstract
The utility model discloses a bushing current transformer, and relates to the technical field of current transformers. The bushing current transformer comprises an enclosed casing and a magnetic conductor, wherein the casing further comprises a base and a casing body, the casing body is a hollow cylindrical body, the magnetic conductor is arranged in the casing body, and the base is arranged on the outside surface of the casing body. The bushing current transformer has the advantages that through the structure arrangement, the size and the weight are reduced, and the installation and the fixing are convenient through the arrangement of convex blocks.
Description
Technical field
The utility model relates to the current transformer technical field, particularly a kind of bushing current transformer.
Background technology
Current transformer is according to electromagnetic induction principle work, and iron magnetic conductor and the winding by closure forms usually.Its umber of turn seldom; string is in the circuit of the electric current that needs are measured; therefore it often has whole electric currents of circuit to flow through; the secondary winding turn ratio is more; be serially connected in measuring instrument and the protection loop, current transformer is when work, and its 2 minor loops are closed all the time; therefore the impedance of measuring instrument and protection loop series coil is very little, and the operating state of current transformer is near short circuit.
Bushing current transformer is comparatively common current transformer, but all there is the larger problem of volume and weight in bushing current transformer of the prior art.
The utility model content
The technical problem that (one) will solve
The technical problems to be solved in the utility model is: the volume and weight that how to reduce bushing current transformer.
(2) technical scheme
For solving the problems of the technologies described above, the utility model provides a kind of bushing current transformer, described bushing current transformer comprises: the shell of sealing and magnetic conductor, described shell further comprises base and housing, described housing is the cylinder of hollow, described magnetic conductor is located in the described housing, and described base is located at the lateral surface of described housing.
Wherein, an end of described housing is provided with at least three projections.
Wherein, described magnetic conductor is silicon steel sheet.
Wherein, described shell is plastic casing, adopts the fixing described magnetic conductor of epoxide resin vacuum cast in the described housing.
Wherein, also be provided with winding in the described housing.
Wherein, described magnetic conductor is the semicircle annular.
Wherein, described winding is secondary winding.
(3) beneficial effect
The utility model has reduced the volume and weight of bushing current transformer by the structure setting, and by projection is set, is convenient to install and fix.
Description of drawings
Fig. 1 is the front view according to the bushing current transformer of a kind of execution mode of the utility model;
Fig. 2 is the end view of bushing current transformer shown in Figure 1;
Fig. 3 is the structural representation that bushing current transformer shown in Figure 1 is fixed.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
The below illustrates the utility model to be provided with four projections, but does not limit protection range of the present utility model.Fig. 1 is the front view according to the bushing current transformer of a kind of execution mode of the utility model; Fig. 2 is the end view of bushing current transformer shown in Figure 1.With reference to Fig. 1 ~ 2, described bushing current transformer comprises: the shell of sealing and magnetic conductor, described shell further comprises base 2 and housing 1, described housing 1 is the cylinder of hollow, described magnetic conductor is located in the described housing 1, described base 2 is located at the lateral surface of described housing 1, one end of described housing 1 is provided with four projections 3, described magnetic conductor is silicon steel sheet, described shell is plastic casing, adopts the fixing described magnetic conductor of epoxide resin vacuum cast in the described housing, also is provided with winding in the described housing, described magnetic conductor is the semicircle annular, and described winding is secondary winding.With reference to Fig. 3, the bushing current transformer of present embodiment can be fixed on the mounting panel 4 by projection 3.
The operation principle of the bushing current transformer of present embodiment is as follows: will need the circuit of the electric current measured to pass the housing of described bushing current transformer, magnetic conductor and winding can produce electromagnetic induction, realize unsteady flow, thereby realize the measurement of electric current.Current transformer is when work, and its 2 minor loops are closed all the time, and the operating state of current transformer is near short circuit.
The utility model has selected the higher silicon steel sheet of magnetic permeability as the material of magnetic conductor, so that bushing current transformer has the little characteristics of magnetic circuit loss, its semicircle annular magnetizer and secondary winding adopt epoxide resin vacuum be cast in can be fire-retardant plastic casing in, moisture proof, stable performance, Maintenance free.This current transformer volume is little, lightweight, and it is little to take up room, and is convenient to be fixed in the cable vault of loop-network switch cabinet, only cable to be measured need be passed from endoporus during installation, and is simple and efficient.
Above execution mode only is used for explanation the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that does not break away from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (7)
1. bushing current transformer, it is characterized in that, described bushing current transformer comprises: the shell of sealing and magnetic conductor, described shell further comprises base and housing, described housing is the cylinder of hollow, described magnetic conductor is located in the described housing, and described base is located at the lateral surface of described housing.
2. bushing current transformer as claimed in claim 1 is characterized in that, an end of described housing is provided with at least three projections.
3. bushing current transformer as claimed in claim 1 is characterized in that, described magnetic conductor is silicon steel sheet.
4. bushing current transformer as claimed in claim 1 is characterized in that, described shell is plastic casing, adopts the fixing described magnetic conductor of epoxide resin vacuum cast in the described housing.
5. bushing current transformer as claimed in claim 1 is characterized in that, also is provided with winding in the described housing.
6. such as each described bushing current transformer in the claim 1 ~ 5, it is characterized in that described magnetic conductor is the semicircle annular.
7. bushing current transformer as claimed in claim 6 is characterized in that, described winding is secondary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220308565 CN202736723U (en) | 2012-06-27 | 2012-06-27 | Bushing current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220308565 CN202736723U (en) | 2012-06-27 | 2012-06-27 | Bushing current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202736723U true CN202736723U (en) | 2013-02-13 |
Family
ID=47662396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220308565 Expired - Lifetime CN202736723U (en) | 2012-06-27 | 2012-06-27 | Bushing current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202736723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680902A (en) * | 2013-11-15 | 2014-03-26 | 国网山东省电力公司青岛供电公司 | Current transformer assembly |
-
2012
- 2012-06-27 CN CN 201220308565 patent/CN202736723U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680902A (en) * | 2013-11-15 | 2014-03-26 | 国网山东省电力公司青岛供电公司 | Current transformer assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |