CN202003783U - Sampling resistor for electric energy meter - Google Patents
Sampling resistor for electric energy meter Download PDFInfo
- Publication number
- CN202003783U CN202003783U CN2011200140102U CN201120014010U CN202003783U CN 202003783 U CN202003783 U CN 202003783U CN 2011200140102 U CN2011200140102 U CN 2011200140102U CN 201120014010 U CN201120014010 U CN 201120014010U CN 202003783 U CN202003783 U CN 202003783U
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- CN
- China
- Prior art keywords
- electric energy
- energy meter
- sampling resistor
- red copper
- alloy block
- 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 - Fee Related
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Abstract
A sampling resistor for an electric energy meter comprises a sampling resistor body; the sampling resistor body comprises a manganese copper alloy block and red copper blocks; the red copper blocks are arranged at the two ends of the manganese copper alloy block; and the red copper blocks and the manganese copper alloy block are welded together through an electron beam welding procedure. The sampling resistor has the beneficial effects that: as the red copper blocks and the manganese copper alloy block are welded together through the electron beam, the welding part is not overlaid; serious material waste caused by a traditional sampling resistor with the material overlying is reduced; meanwhile, the welding part has no impurities, and the weld joint is tight and smooth; therefore, a stable parameter value can be acquired when large current or small current passes, the error of the electric energy meter can be controlled in an ideal range, the error precision of the electric energy meter can be guaranteed, and the qualified rate of the product is improved.
Description
(1) technical field
The utility model relates to a kind of resistance, relates in particular to a kind of sample resistance that is used for electric energy meter.
(2) background technology
Existing sample resistance mainly is to be superposeed mutually and adopted silver to starch welding procedure by the multi-disc pure copper material to be welded, and the sample resistance of this form is owing to the stack of its material causes waste of material serious, and volume is also bigger; Because weld is easy to generate impurity, makes sampling error can not obtain a stable parameter value, thereby causes the error instability of electric energy meter, make the qualification rate of product descend.
(3) summary of the invention
Have above-mentioned deficiency in the prior art in order to overcome, the utility model provide a kind of simple in structure, save material, the sample resistance that is used for electric energy meter that sampling error is stable.
The technical scheme in the invention for solving the technical problem is: a kind of sample resistance that is used for electric energy meter, comprise the sample resistance body, the red copper piece that this sample resistance body comprises the manganin piece and is positioned at these manganin piece two ends, this red copper piece and described manganin piece are integrally welded by electro-beam welding process.
Further, described red copper piece is provided with installing hole.
Further, described sample resistance body is provided with 3 pedestals, and wherein 1 is electrical voltage point, and all the other 2 is sampling point.
The utility model is welded on the two ends of manganin piece with the red copper piece by electro-beam welding process in use, makes it to become one, and welds sample line then on pedestal, connects extrinsic current by installing hole at last.When current signal was flowed through the sample resistance body, the sample line from pedestal carried out sample of signal, thereby realized all can obtaining a stable parameter value when excessive electric current or little electric current.
The beneficial effects of the utility model are: since between red copper piece and the manganin piece by electron beam welding, do not superpose at weld, cause the serious waste of material owing to material superposes thereby reduced traditional sample resistance; Simultaneously also do not have impurity, and weld seam is closely smooth, makes through excessive electric current or little electric current the time at weld, all can obtain a stable parameter value, make the ERROR CONTROL of electric energy meter within ideal range, guaranteed the error precision of electric energy meter, improved the qualification rate of product.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, a kind of sample resistance that is used for electric energy meter, comprise the sample resistance body, the red copper piece 2 that this sample resistance body comprises manganin piece 1 and is positioned at these manganin piece 1 two ends, this red copper piece 2 is integrally welded by electro-beam welding process with described manganin piece 1, and described red copper piece 2 is provided with installing hole 3, and described sample resistance body is provided with 3 pedestals 4, wherein 1 is electrical voltage point, and all the other 2 is sampling point.
The utility model is welded on the two ends of manganin piece 1 with red copper piece 2 by electro-beam welding process in use, makes it to become one, and welds sample line then on pedestal 4, connects extrinsic currents by installing hole 3 at last.When current signal was flowed through the sample resistance body, the sample line from pedestal 4 carried out sample of signal, thereby realized all can obtaining a stable parameter value when excessive electric current or little electric current.
Claims (3)
1. sample resistance that is used for electric energy meter, comprise the sample resistance body, it is characterized in that: the red copper piece that this sample resistance body comprises the manganin piece and is positioned at these manganin piece two ends, this red copper piece and described manganin piece are integral by electron beam welding.
2. according to the described sample resistance that is used for electric energy meter of claim 1, it is characterized in that: described red copper piece is provided with installing hole.
3. according to claim 1 or the 2 described sample resistances that are used for electric energy meter, it is characterized in that: described sample resistance body is provided with 3 pedestals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200140102U CN202003783U (en) | 2011-01-17 | 2011-01-17 | Sampling resistor for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200140102U CN202003783U (en) | 2011-01-17 | 2011-01-17 | Sampling resistor for electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003783U true CN202003783U (en) | 2011-10-05 |
Family
ID=44706513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200140102U Expired - Fee Related CN202003783U (en) | 2011-01-17 | 2011-01-17 | Sampling resistor for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003783U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854368A (en) * | 2012-09-27 | 2013-01-02 | 杭州炬华科技股份有限公司 | Manganin current sampling device resisting outside magnetic field interference |
| CN103176019A (en) * | 2013-03-23 | 2013-06-26 | 桐乡市伟达电子有限公司 | High-precision diverter |
| CN103630709A (en) * | 2013-12-20 | 2014-03-12 | 青岛乾程电子科技有限公司 | Integrated circuit board of single-phase guide rail meter |
-
2011
- 2011-01-17 CN CN2011200140102U patent/CN202003783U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854368A (en) * | 2012-09-27 | 2013-01-02 | 杭州炬华科技股份有限公司 | Manganin current sampling device resisting outside magnetic field interference |
| CN103176019A (en) * | 2013-03-23 | 2013-06-26 | 桐乡市伟达电子有限公司 | High-precision diverter |
| CN103630709A (en) * | 2013-12-20 | 2014-03-12 | 青岛乾程电子科技有限公司 | Integrated circuit board of single-phase guide rail meter |
| CN103630709B (en) * | 2013-12-20 | 2015-12-09 | 青岛乾程电子科技有限公司 | A kind of integral type wiring board of single-phase guide rail meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20120117 |