CN202120747U - Current transformer with function of resisting direct current component - Google Patents
Current transformer with function of resisting direct current component Download PDFInfo
- Publication number
- CN202120747U CN202120747U CN2011202177154U CN201120217715U CN202120747U CN 202120747 U CN202120747 U CN 202120747U CN 2011202177154 U CN2011202177154 U CN 2011202177154U CN 201120217715 U CN201120217715 U CN 201120217715U CN 202120747 U CN202120747 U CN 202120747U
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- annular core
- wire
- secondary coil
- lead
- primary lead
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Abstract
The utility model discloses a current transformer with a function of resisting direct current component, which comprises a primary lead and a secondary coil. The primary lead is an n-shaped copper material, and the section of the copper material is rectangular-shaped. An insulation sleeve is sleeved outside the copper material. The secondary coil comprises an annular core, an enameled wire and an epoxy resin layer. The annular core is made by compositing an iron-based nanometer crystal material and an iron-based non-crystal material. The enameled wire is wound on the annular core. The epoxy resin layer is arranged in a hole in the middle of the annular core and used for separating the primary lead and the annular core, and transverse portions of the primary lead and the annular core penetrate through the middle of the annular core. Two ends of the enameled wire are both connected with out-going wires. The current transformer with the function of resisting direct current components has the advantages that the end of the primary lead is a sheet-shaped wiring terminal, the current transformer is good in conductivity and high in strength and can be used for fixing the transformer besides connecting the current. During production, the copper primary lead and the secondary coil are integrally fixed by sticking two sides of the copper primary lead and the secondary coil through high temperature glue or sealing two sides of the copper primary lead and the secondary coil through the epoxy resin, the insulation effect is good, covered space is small, installation is convenient, and installing structure is simplified.
Description
Technical field
The utility model has related to a kind of electric energy meter parts, particularly be applied in a kind of current transformer in the electronic electric energy meter with anti-DC component function.
Background technology
The ripe current measurement mode of using always in the electronic electric energy meter at present is based on the common AC current transformer of electromagnetic induction principle; Under normal circumstances be sinusoidal ac in the electrical network loop, this moment, common AC current transformer can be realized accurate metering preferably; But development along with power electronic technology; Applying also of various Switching Power Supplies brought interference and pollution to electrical network; Make the simple alternating current waveform take place to distort and contain DC component in various degree; This moment, the measure error of common AC current transformer can increase rapidly, caused the also corresponding increase of electric energy meter error in dipping.Also clearly stipulated the test request of DC component and the even-order harmonic amount of influence in the alternating current circuit in GB/T 17215-2002 " 1 grade exchange active electric energy meter with the 2 grades of state types " standard, common AC current transformer can not meet the demands.
The utility model content
The utility model technical problem to be solved provides a kind of current transformer with anti-DC component function, can effectively save the installing space of instrument transformer in the electric energy meter, and convenient the installation simplified mounting structure.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of current transformer with anti-DC component function comprises elementary lead-in wire and secondary coil; Said elementary lead-in wire is n " copper material of type, said copper material cross section is a rectangle; Said copper material outside also is set with insulating sleeve; Said secondary coil comprises the annular core that is composited with iron based nano crystal material and Fe-based amorphous material, be wrapped in the enamelled wire on the annular core and be located at being used in the annular core mider hole and isolate elementary lead-in wire and the epoxy resin layer of annular core and the insulation crust of being located at the annular core outside that the annular core middle part is passed in the lateral part; Said enamelled wire two ends all connect lead-out wire.
Said elementary lead-in wire two ends are arranged with connecting hole and anticreep groove.
Said lead-out wire is the multiply annealed copper wire.
Adopt the beneficial effect that technique scheme produced to be: elementary lead-in wire end is the sheet binding post, good conductivity, and intensity is high, except that making current lead-through, can also play the effect that installs and fixes instrument transformer; Through high-temp glue stickup two sides or epoxy resin embedding two sides the elementary lead-in wire of copper, secondary coil one are fixed during production, insulation effect is good, and it is little to take up room, easy for installation, simplifies mounting structure.
Description of drawings
Fig. 1 is the utility model front view;
Fig. 2 is the utility model left view;
Fig. 3 is the structural representation of elementary lead-in wire.
In the accompanying drawings: 1, elementary lead-in wire; 1-1, installing hole; 1-2, anticreep groove; 2, insulation crust; 3, lead-out wire; 4, enamelled wire; 5, annular core.
Further the utility model is carried out detailed description below in conjunction with accompanying drawing.
Embodiment
A kind of current transformer with anti-DC component function as depicted in figs. 1 and 2 is characterized in that: comprise elementary lead-in wire 1 and secondary coil; Said elementary lead-in wire 1 is the copper material of " n " type, and said copper material cross section is a rectangle; Said copper material outside also is set with insulating sleeve; Said secondary coil comprises the annular core 5 that is composited with iron based nano crystal material and Fe-based amorphous material, be wrapped in the enamelled wire 4 on the annular core 5 and be located at and be used to isolate elementary lead-in wire 1 and the epoxy resin layer of annular core 5 and the insulation crust 2 of being located at annular core 5 outsides that annular core 5 middle parts are passed in the lateral part in annular core 5 mider holes; Said enamelled wire two ends all connect lead-out wire 3.
Said elementary lead-in wire 1 two ends are arranged with connecting hole 1-1 and anticreep groove 1-2 (as shown in Figure 3).
Said lead-out wire 3 is the multiply annealed copper wire.
The utility model utilizes electromagnetic induction principle, and the middle part wears primary coil, coiling secondary coil on annular core on annular core; Primary coil adopts the elementary lead-in wire of copper to wear a circle; The elementary lead-in wire of copper end is the sheet binding post, also is provided with the anticreep groove, can directly insert the instrument transformer that presets in the ammeter draw-in groove bottom is installed; The configuration of the primary and secondary coil ratio through instrument transformer, electric current that will be bigger accurately are transformed into the little electric current of milliampere level that can directly measure for instrument.Used annular core is new iron-based nanocrystalline material and the compound iron core of Fe-based amorphous material.
The utility model is plainly-packed formula structure, and elementary lead-in wire secondary coil pastes through the elevated temperature heat melten gel or epoxy resin is fixed as one.On the binding post of elementary lead-in wire, standard installation hole is arranged; Supporting with the energy meter terminal installation dimension, the anticreep design is arranged at the bottom, can directly assign the instrument transformer that presets in the ammeter that the draw-in groove bottom is installed; Secondary coil is output as the lead-in wire lead-out mode, and lead-out wire connects electrical energy meter electricity flowmeter amount loop.
As shown in Figure 1; In the anti-DC component instrument transformer of the plainly-packed formula of the utility model; Be provided with elementary lead-in wire 1 and secondary coil, on the binding post of elementary lead-in wire end standard installation hole arranged, supporting with the energy meter terminal installation dimension; The bottom also is provided with the anticreep groove, can directly assign the instrument transformer that presets in the ammeter that the draw-in groove bottom is installed; Secondary coil is formed by annular core with around the enamelled wire of its outside; The annular core that is adopted is new iron-based nanocrystalline material and the compound iron core of Fe-based amorphous material; The lead-out wire of secondary coil connects electrical energy meter electricity flowmeter amount circuit, for the electric energy meter chip provides current signal; Elementary lead-in wire 1 electroplating surfaces with tin or Nickel Plating Treatment, good conductivity, anticorrosion, elementary lead-in wire 1 outside is with insulating sleeve, and assurance is good with the secondary wire turn turn insulation, and secondary coil 2 outsides are with high insulating sleeve, guarantee effectively to insulate with the ammeter internal components; Paste two sides or epoxy resin embedding two sides through high-temp glue during production elementary lead-in wire 1, secondary coil one are fixed, insulation effect is good, and it is little to take up room, easy for installation.
Claims (3)
1. the current transformer with anti-DC component function is characterized in that: comprise elementary lead-in wire (1) and secondary coil; Said elementary lead-in wire (1) is the copper material of " n " type, and said copper material cross section is a rectangle; Said copper material outside also is set with insulating sleeve; Said secondary coil comprises the annular core (5) that is composited with iron based nano crystal material and Fe-based amorphous material, be wrapped in the enamelled wire (4) on the annular core (5) and be located at being used in annular core (5) mider hole isolate the lateral part pass annular core (5) middle part elementary lead-in wire (1) and annular core (5) epoxy resin layer and be located at the insulation crust (2) outside the annular core (5); Said enamelled wire two ends all connect lead-out wire (3).
2. a kind of current transformer with anti-DC component function according to claim 1 is characterized in that: said elementary lead-in wire (1) two ends are arranged with connecting hole (1-1) and anticreep groove (1-2).
3. a kind of current transformer with anti-DC component function according to claim 2 is characterized in that: said lead-out wire (3) is the multiply annealed copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202177154U CN202120747U (en) | 2011-06-24 | 2011-06-24 | Current transformer with function of resisting direct current component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202177154U CN202120747U (en) | 2011-06-24 | 2011-06-24 | Current transformer with function of resisting direct current component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202120747U true CN202120747U (en) | 2012-01-18 |
Family
ID=45461792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202177154U Expired - Fee Related CN202120747U (en) | 2011-06-24 | 2011-06-24 | Current transformer with function of resisting direct current component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202120747U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977005A (en) * | 2016-06-12 | 2016-09-28 | 嘉兴威士顿电子科技有限公司 | Assembly method of current transformer and current transformer |
| CN106783115A (en) * | 2017-02-13 | 2017-05-31 | 安徽君华舜义恩佳非晶材料有限公司 | A kind of anti-DC component current transformer of double-iron core |
| CN106971831A (en) * | 2017-04-05 | 2017-07-21 | 科誉德电气（苏州）有限公司 | Voltage transformer |
| CN110517871B (en) * | 2019-08-23 | 2024-06-04 | 无锡爱邦辐射技术有限公司 | Internal middle and external three-shielding transformer |
-
2011
- 2011-06-24 CN CN2011202177154U patent/CN202120747U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977005A (en) * | 2016-06-12 | 2016-09-28 | 嘉兴威士顿电子科技有限公司 | Assembly method of current transformer and current transformer |
| CN106783115A (en) * | 2017-02-13 | 2017-05-31 | 安徽君华舜义恩佳非晶材料有限公司 | A kind of anti-DC component current transformer of double-iron core |
| CN106971831A (en) * | 2017-04-05 | 2017-07-21 | 科誉德电气（苏州）有限公司 | Voltage transformer |
| CN110517871B (en) * | 2019-08-23 | 2024-06-04 | 无锡爱邦辐射技术有限公司 | Internal middle and external three-shielding transformer |
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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 |
Granted publication date: 20120118 Termination date: 20200624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |