CN202126922U - Current transformer structure for molded case circuit breaker - Google Patents
Current transformer structure for molded case circuit breaker Download PDFInfo
- Publication number
- CN202126922U CN202126922U CN 201120224601 CN201120224601U CN202126922U CN 202126922 U CN202126922 U CN 202126922U CN 201120224601 CN201120224601 CN 201120224601 CN 201120224601 U CN201120224601 U CN 201120224601U CN 202126922 U CN202126922 U CN 202126922U
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- Prior art keywords
- current transformer
- base
- cover plate
- breaker
- plastic casing
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- Expired - Fee Related
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Abstract
The utility model discloses a current transformer structure for a molded case circuit breaker. The current transformer structure comprises a base and a cover plate, wherein a moving contact and a current transformer are arranged in the base; the base is connected with the cover plate by screws; grooves and fixing holes are also arranged on the base; and lug bosses and pins are arranged on the cover plate, the lug bosses correspond to the grooves, and the pins correspond to the fixing holes. In the current transformer structure for the molded case circuit breaker, since the grooves and the fixing holes are arranged on the base and the corresponding lug bosses and pins are arranged on the cover plate, the reliability of matching between the cover plate and the base is effectively improved, and the degree of accuracy, the degree of linearity and the consistency of the current transformer are further improved; and the current transformer structure for the molded case circuit breaker has the advantages of convenience for assembly, simple structure and suitability for batch processing and manufacturing.
Description
Technical field
The utility model relates to the low-voltage electrical apparatus field, the current transformer structure that particularly a kind of breaker of plastic casing is used.
Background technology
Breaker of plastic casing has obtained using widely as one of protection electrical equipment main in the low-voltage distributing line.But along with social production, growth in the living standard, people have higher requirement to fail safe, reliability, the accuracy of electricity consumption, simultaneously to breaker of plastic casing proposed that volume is little, modularization assembling etc. also proposes corresponding requirements.Electronic technology is applied to the breaker of plastic casing product gradually and obtains development energetically in recent years, and electronic technology is mainly used in the characteristic protection system of breaker of plastic casing, mainly is made up of current transformer, intelligent controller, magnetic flow convertor three parts.Wherein current transformer is the current signal collecting unit, and intelligent controller is the signal analysis comparing unit, and magnetic flow convertor is the dropout performance element.
Can find out that the current transformer that has only as signal gathering unit has higher accuracy, the linearity and consistency, just guarantees to demonstrate,prove breaker of plastic casing reliable protection circuit.But at present a lot of current transformers are because its structure is unreasonable, assembly technology is comparatively complicated; Because structure unreasonable caused current transformer and controller reliability and fail safe reduction on respective outer side edges; Cause its accuracy, the linearity and consistency not to reach instructions for use, and then influence the use of breaker of plastic casing.
The utility model content
To the deficiency of above-mentioned prior art, the technical problem that the utility model will solve provides a kind of reliable in structure, installing and replacing is convenient, the breaker of plastic casing Current Transformer structure of accuracy, the linearity and high conformity.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of breaker of plastic casing Current Transformer structure; Comprise base and cover plate, be provided with the moving contact summation current transformer in the said base, said base is connected through screw with said cover plate; Also be provided with groove and fixing hole on the said base; Said cover plate is provided with boss and pin, and said boss is corresponding with said groove, and said pin is corresponding with said fixing hole.
Preferably, said fixing hole is a rectangular configuration, and said pin is the barb-like structure of rectangle.
Preferably, four jiaos of said base respectively are provided with a fixing hole, and four jiaos of said cover plate respectively are provided with a corresponding pin of fixing hole with four jiaos of said bases.
Preferably, said groove is wedge structure, and said boss and said groove shapes adapt.
Preferably, said base is provided with two pairs of grooves, and said cover plate is provided with two pairs and the corresponding boss of base upper groove.
Preferably, also be provided with the fixing feet that is used for fixing current transformer on the said cover plate.
Preferably, said cover plate is provided with three pairs of fixing feet.
Preferably, said screw is a tapping screw.
Technique scheme has following beneficial effect: this breaker of plastic casing Current Transformer structure is provided with groove and fixing hole on base; Corresponding boss and pin on the cover board are set; So just can effectively improve the reliability that cooperates between cover plate and the base; And then accuracy, the linearity and the consistency of raising current transformer, there is this breaker of plastic casing Current Transformer structure easy to assembly, simple in structure again, be suitable for batch machining and make.
Above-mentioned explanation only is the general introduction of the utility model technical scheme, in order more to know the technological means of understanding the utility model, and can implement according to the content of specification, below with the preferred embodiment of the utility model and conjunction with figs. specify as after.The embodiment of the utility model is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is the perspective exploded view of the utility model embodiment.
Fig. 2 is the understructure sketch map of the utility model embodiment.
Fig. 3 is the covering plate structure sketch map of the utility model embodiment.
Embodiment
Describe in detail below in conjunction with the preferred embodiment of accompanying drawing to the utility model.
As shown in Figure 1; This breaker of plastic casing Current Transformer structure comprises base 1, cover plate 2, moving contact 3 summation current transformers 4, and moving contact 3 summation current transformers 4 are positioned at base 1, and base 1 is connected through screw 5 with cover plate 2; Screw 5 is a tapping screw, can increase the intensity of connection like this.As can be seen from Figure 1 the assemble sequence of base 1, cover plate 2, moving contact 3, current transformer 4, trip bolt 5 is assembling from top to bottom; This assembling mode is more convenient; For moving contact 3, current transformer 4 bigger structure space is provided simultaneously, the precision of current transformer provides guarantee during for less electric current particularly.The number of turn that can be through increasing current transformer 4 primary windings and then increase the energy that current transformer 4 offers intelligent controller.If base 1, cover plate 2 are designed to the front and back assembly structure, but will have influence on the assembling of moving contact 3, current transformer 4 like this, and because the volume restrictions of current transformer 4 can't realize that the number of turn of current transformer 4 primary windings increases.
Like Fig. 2, shown in 3, four jiaos of base 1 respectively are provided with a fixing hole 7, four jiaos of cover plate 2 respectively be provided with one with base 1 on four jiaos fixing hole 7 corresponding pins 6, the fixing hole 7 in the base 1 is arranged with the pin 6 in the cover plate 2 in pairs.Fixing hole 7 is a rectangular configuration, and pin 6 is the barb-like structure of rectangle, and pin 6, fixing hole 7 adopts said structures fully to guarantee the reliability that the pin 6 on the cover plate 2 patches, and the distortion that curves inwardly of restriction pin 6, and it also has certain guide effect in addition.Adopt this structure can guarantee base 1 and the compactness that cover plate 2 cooperates, can not occur owing to warpage that spacing shortage causes, distortion etc.
Also be provided with three pairs of fixing feet 8 on the cover plate 2, fixing feet 8 can fix current transformer 4.When base 1, cover plate 2, moving contact 3, current transformer 4, screw 5 forms a fixedly semi-closed structure, if do not have fixing feet 8 in the cover plate 2 existence, moving contact 3 summation current transformers 4 will be in upper and lower unconfined state in base 1.Instrument transformer fixing feet 8 has three pairs in the cover plate 2, can limit the upper and lower position of each current transformer in the three-phase circuit simultaneously.
This breaker of plastic casing Current Transformer structure through base 1, cover plate 2, moving contact 3, current transformer 4, screw 5 current transformer module that forms of totally five part-structures both can adopt the plugging mode of direct lead also can adopt the connected mode of contact pin with on intelligent controller cooperates.Simultaneously, when the primary current through current transformer 4 diminishes, can reach enough secondary coil energy with the number of turn that increases primary winding through the line footpath that reduces primary winding, expanding for littler current specification for breaker of plastic casing provides possibility.
This breaker of plastic casing Current Transformer structure is provided with groove 10 and fixing hole 7 on base 1; Corresponding boss 9 and pin 6 are set on cover plate 2, so just can effectively improve the reliability that cooperates between cover plate and the base, solved the accuracy of current transformer under the small electric traffic specification; And then accuracy, the linearity and the consistency of raising current transformer; Have this breaker of plastic casing Current Transformer structure easy to assembly, simple in structure again, be suitable for batch machining and make, especially the structure of base 1 and cover plate 2 realizes in Mould Machining easily; Technology is comparatively simple, and this bind mode with face is more reliable than prior art.This current transformer overall structure is that the intelligent controller structure that is mated provides offers additional possibilities simultaneously.
More than a kind of breaker of plastic casing Current Transformer structure that the utility model embodiment is provided carried out detailed introduction; For one of ordinary skill in the art; According to the thought of the utility model embodiment, the part that on embodiment and range of application, all can change, in sum; This description should not be construed as the restriction to the utility model, and all any changes of being made according to the utility model design philosophy are all within the protection range of the utility model.
Claims (8)
1. breaker of plastic casing Current Transformer structure; Comprise base and cover plate, be provided with the moving contact summation current transformer in the said base, said base is connected through screw with said cover plate; It is characterized in that: also be provided with groove and fixing hole on the said base; Said cover plate is provided with boss and pin, and said boss is corresponding with said groove, and said pin is corresponding with said fixing hole.
2. breaker of plastic casing Current Transformer structure according to claim 1 is characterized in that: said fixing hole is a rectangular configuration, and said pin is the barb-like structure of rectangle.
3. breaker of plastic casing Current Transformer structure according to claim 2 is characterized in that: four jiaos of said base respectively are provided with a fixing hole, and four jiaos of said cover plate respectively are provided with a corresponding pin of fixing hole with four jiaos of said bases.
4. breaker of plastic casing Current Transformer structure according to claim 1, it is characterized in that: said groove is wedge structure, and said boss and said groove shapes adapt.
5. breaker of plastic casing Current Transformer structure according to claim 4 is characterized in that: said base is provided with two pairs of grooves, and said cover plate is provided with two pairs and the corresponding boss of base upper groove.
6. breaker of plastic casing Current Transformer structure according to claim 1 is characterized in that: also be provided with the fixing feet that is used for fixing current transformer on the said cover plate.
7. breaker of plastic casing Current Transformer structure according to claim 6 is characterized in that: said cover plate is provided with three pairs of fixing feet.
8. breaker of plastic casing Current Transformer structure according to claim 1 is characterized in that: said screw is a tapping screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120224601 CN202126922U (en) | 2011-06-29 | 2011-06-29 | Current transformer structure for molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120224601 CN202126922U (en) | 2011-06-29 | 2011-06-29 | Current transformer structure for molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126922U true CN202126922U (en) | 2012-01-25 |
Family
ID=45489986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120224601 Expired - Fee Related CN202126922U (en) | 2011-06-29 | 2011-06-29 | Current transformer structure for molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202126922U (en) |
-
2011
- 2011-06-29 CN CN 201120224601 patent/CN202126922U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20200629 |