CN204855591U - Copper -manganese shunt - Google Patents
Copper -manganese shunt Download PDFInfo
- Publication number
- CN204855591U CN204855591U CN201520636294.7U CN201520636294U CN204855591U CN 204855591 U CN204855591 U CN 204855591U CN 201520636294 U CN201520636294 U CN 201520636294U CN 204855591 U CN204855591 U CN 204855591U
- Authority
- CN
- China
- Prior art keywords
- copper
- manganese
- resistive element
- conducting strip
- guide card
- 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
Links
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses a copper -manganese shunt belongs to electronic type electric energy meter field, has solved the low technical problem of copper -manganese shunt sampling precision among the prior art, the utility model discloses a copper -manganese shunt, including the copper -manganese resistive element and with the compensation guide card that the copper -manganese resistive element is connected, the copper -manganese resistive element produces electromagnetic induction with the compensation guide card in alternating magnetic field, compensation guide card and copper -manganese resistive element produce reverse induced electromotive force and cancel each other out respectively by electromagnetic induction. The embodiment of the utility model provides an use in electronic type electric energy meter field.
Description
[technical field]
The utility model relates to a kind of manganese copper diverter, belongs to electronic electric energy meter field.
[background technology]
Shunt is widely used in and expands instrument measurement range of current, and can be used for the backflow to the power supply of communication system, complete electronic set, Automated condtrol etc., current limliting, current-sharing sampling detect.The key property of shunt is a low resistance device, is provided with sampling end.Traditional shunt adopts sample line to the voltage flowing through manganese copper diverter, and electric current is sampled, and does not have particular/special requirement to the winding of sample line and the position of sampling end points.Adopt under normal circumstances and carry out voltage in this way, current sample does not have influential, but this shunt is easily subject to the interference of extraneous alternating magnetic field, and the precision making it sample is subject to larger impact, cannot normally work.
Manganese copper diverter is widely used in voltage in various instrument and meter, the high precision components of current sample, especially relates to the manganese copper diverter of the sampling element for electronic electric energy meter metering electric energy; Electric current can show metering sampling by the power voltage supply that the pressure drop of shunt copper-manganese resistive element produces, and the voltage produced is generally millivolt level, and especially easily by the transformer of self in electric energy meter, mutual inductor alternating magnetic field disturbs; And the alternating magnetic field of outside disturbs and causes sampled signal normally not work by accurate-metering electric energy, particularly some stealings lawless person alternating magnetic field interference electric energy meter, thus stealing.Utilize alternating magnetic field to disturb the normal error in dipping of electric energy meter through test measuring and calculating, change along with the power of alternating magnetic field, maximum error can reach 100%.
[utility model content]
Problem to be solved in the utility model is just to provide a kind of manganese copper diverter that anti-alternating magnetic field disturbs, sampling precision is high.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of manganese copper diverter, the compensation guide card comprising copper-manganese resistive element and be connected with described copper-manganese resistive element, described copper-manganese resistive element produces electromagnetic induction with compensation guide card in alternating magnetic field, described copper-manganese resistive element with compensate guide card and be arranged in series, the induction electromotive force that the induction electromotive force that described compensation guide card produces by electromagnetic induction and copper-manganese resistive element produce by electromagnetic induction is contrary and cancel out each other.
Manganese copper diverter in the utility model, comprise copper-manganese resistive element and compensate guide card, compensate guide card to be connected with copper-manganese resistive element, when manganese copper diverter passes into exchange current, exchange current can produce alternating magnetic field, or when there is alternating magnetic field in the external world, now copper-manganese resistive element and compensation guide card can produce contrary induction electromotive force in alternating magnetic field, manganese copper diverter is also provided with two sample line connecting metering IC, wherein a sample line is connected to and compensates on guide card, another root sample line is connected on copper-manganese resistive element, make copper-manganese resistive element and compensate guide card to be connected between two sample line, therefore the induction electromotive force that the induction electromotive force that guide card produces can offset the generation of copper-manganese resistive element is compensated, improve sampling precision and ensure the voltage that the magnitude of voltage between two sample line produces for actual current.
Second specific embodiments: described copper-manganese resistive element comprises copper-manganese resistance, the first conducting strip and the second conducting strip, described copper-manganese resistance connects between the first conducting strip and the second conducting strip, described compensation guide card comprises connecting portion and compensation section, described compensation section is formed by connecting portion bending, described connecting portion is connected on the first conducting strip or the second conducting strip, and described compensation section is suspended at the side of copper-manganese resistance.When alternating magnetic field disturbs, because compensation section covers on copper-manganese resistive element, alternating magnetic field can pass copper-manganese resistive element and compensation section simultaneously, copper-manganese resistive element and compensation section is made to produce reverse induction electromotive force, connecting portion is connected on the first conducting strip or the second conducting strip, make copper-manganese resistive element and compensation section form series circuit, the induction electromotive force that therefore compensation section produces can offset the induction electromotive force that copper-manganese resistive element produces.
3rd specific embodiments: the projected area of described compensation section in copper-manganese resistance plane and the area equation of copper-manganese resistance.Design like this, can ensure more effectively to improve the ability of the anti-alternating magnetic field interference of manganese copper diverter by the induction electromotive force that induction electromotive force that compensation section produces can balance out copper-manganese resistance completely and produces.
4th specific embodiments: described manganese copper diverter also comprises two sample line being connected to copper-manganese resistive element two ends, described two sample line wherein one be connected with the end of compensation section, another root sample line described is connected with the first conducting strip or the second conducting strip.Design like this, making to be connected to the pressure drop of magnitude of voltage for producing when actual current flows through copper-manganese resistance between two sample line in metering IC, ensureing the accuracy of the numerical value of metering IC.
These features of the present utility model and advantage will embodiment below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the vertical view of manganese copper diverter in the utility model preferred embodiment;
Fig. 2 is the cut-open view of manganese copper diverter in the utility model preferred embodiment;
Fig. 3 is the schematic diagram of manganese copper diverter in the utility model preferred embodiment.
[embodiment]
The technical scheme of accompanying drawing to the utility model embodiment below in conjunction with the utility model embodiment is explained and illustrated, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiments, all belong to protection domain of the present utility model.
As shown in Figure 1-2, the utility model preferred embodiment proposes a kind of manganese copper diverter, comprise copper-manganese resistive element and compensate guide card, copper-manganese resistive element comprises the first conducting strip 1, second conducting strip 2 and copper-manganese resistance 3, copper-manganese resistance 3 is connected between the first conducting strip 1 and the second conducting strip 3, the first conducting strip 1 in the utility model and the second conducting strip 2 preferably adopt copper sheet, have the advantages that cost is low, stability is high.Compensate guide card and comprise connecting portion 41 and compensation section 42, compensation section 42 is formed through twice bending by connecting portion 41, connecting portion 41 and the first conducting strip 1 are through being welded together, also can be one-body molded with the first conducting strip 1, processing technology is simple, compensation section 42 is suspended at the side of copper-manganese resistance 3, suspension in the utility model refers to that compensation section 42 does not produce any contact with copper-manganese resistive element, to avoid compensation guide card and copper-manganese resistance 3 to form parallel circuit, make compensation guide card cannot play the effect compensating the induced voltage that copper-manganese resistive element 3 produces.
As shown in Figure 3, when there is alternating magnetic field in the external world or when passing into exchange current I in manganese copper diverter, when exchange current I can produce corresponding alternating magnetic field, copper-manganese resistance 3 produces induction electromotive force E1 by electromagnetic induction, compensate guide card 4 and produce induction electromotive force E2 by electromagnetic induction, suppose that the direction of E1 and E2 is identical with the direction of electric current I and it is left positive right negative to be.The resistance of copper-manganese resistance 3 is R, and the electromotive force of copper-manganese resistance left end is E
o, the electromotive force of right-hand member is E
a, now the electric potential difference at copper-manganese resistance 3 two ends is U
oa=E
o-E
a=IR+E1, the electromotive force of compensation section 42 left end is E
o, the electromotive force of right-hand member is E
b, the electric potential difference U produced between the two ends of compensation section 42
ob=E
o-E
b=E2, sample line 5 and sample line 6 is also connected with at copper-manganese resistive element two ends, that is, sample line 6 is connected to the right part of compensation section 42, sample line 5 is connected to the left end of the second conducting strip 2, sample line 5 and sample line 6 are connected on metering IC, and the current signal at copper-manganese resistance 3 two ends is input in metering IC by sample line 6 and sample line 5, thus make metering IC measure the voltage signal produced after electric current flows through copper-manganese resistance 3.
Because connecting portion 41 and the first conducting strip 1 are welded to connect, therefore make compensation section 42 connect with copper-manganese resistance 3, now E1 and E2 voltage direction is contrary, and the voltage signal of metering measured by IC is U
ba, U
ba=U
bo+ U
oa=-E2+IR+E1, actual uses, and when the voltage signal measured in metering IC is IR, the accuracy ability that institute surveys data is high, the induction electromotive force E1 needing to make the equal and opposite in direction of E2 and E1 could offset alternating magnetic field completely for this reason and produce copper-manganese resistance 3.According to Faraday's electromagnetic induction law, induction electromotive force E=ΔΦ/Δ t., from Gauss's Law, magnetic flux phi=BS, Φ is the summation of the magnetic induction density B passing perpendicularly through copper-manganese resistance 3 plane, S is the area that magnetic induction density B passes perpendicularly through plane, t is the time, when time t is identical with magnetic field intensity B, the size of E2 and E1 is relevant with area, can draw thus, when the area equation of the area of the projection of compensation section 42 in copper-manganese resistance 3 plane and copper-manganese resistance 3, E1=E2, now the voltage signal of metering measured by IC is the actual voltage produced by electric current I, sampling precision is higher.
In preferred embodiment of the present utility model, in order to reduce the installing space of manganese copper diverter, preferably compensation section 42 and copper-manganese resistance 3 are be arranged in parallel, the now real area of compensation section 42 and the area equation of copper-manganese resistance 3 or approximately equal, in other embodiments of the present utility model, compensation section and copper-manganese resistance also can form certain angle, as long as ensure the induction electromotive force equal and opposite in direction that the induction electromotive force that the projecting plane of compensation section in copper-manganese resistance plane induces and copper-manganese resistance plane produce, direction is identical, now compensate the induction electromotive force that guide card also can offset the generation of copper-manganese resistance.
In other embodiments of the present utility model, connecting portion also can weld with the second conducting strip or one-body molded, a wherein right-hand member being connected to the first conducting strip 1 now in two sample line, another root is connected on the left part of compensation section, or compensation section and copper-manganese resistance one-body molded, all can reach identical effect, illustrate no longer one by one at this.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto, is familiar with this those skilled in the art and should be understood that the content that the utility model includes but not limited to accompanying drawing and describes in embodiment above.Any amendment not departing from function and structure principle of the present utility model all will comprise within the scope of the appended claims.
Claims (4)
1. a manganese copper diverter, it is characterized in that: the compensation guide card comprising copper-manganese resistive element and be connected with described copper-manganese resistive element, described copper-manganese resistive element produces electromagnetic induction with compensation guide card in alternating magnetic field, described copper-manganese resistive element with compensate guide card and be arranged in series, the induction electromotive force that the induction electromotive force that described compensation guide card produces by electromagnetic induction and copper-manganese resistive element produce by electromagnetic induction is contrary and cancel out each other.
2. a kind of manganese copper diverter according to claim 1, it is characterized in that: described copper-manganese resistive element comprises copper-manganese resistance, the first conducting strip and the second conducting strip, described copper-manganese resistance connects between the first conducting strip and the second conducting strip, described compensation guide card comprises connecting portion and compensation section, described compensation section is formed by connecting portion bending, described connecting portion is connected on the first conducting strip or the second conducting strip, and described compensation section is suspended at the side of copper-manganese resistance.
3. a kind of manganese copper diverter according to claim 2, is characterized in that: the projected area of described compensation section in copper-manganese resistance plane and the area equation of copper-manganese resistance.
4. a kind of manganese copper diverter according to claim 3, it is characterized in that: described manganese copper diverter also comprises two sample line being connected to copper-manganese resistive element two ends, described two sample line wherein one be connected with the end of compensation section, another root sample line described is connected with the first conducting strip or the second conducting strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636294.7U CN204855591U (en) | 2015-08-21 | 2015-08-21 | Copper -manganese shunt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636294.7U CN204855591U (en) | 2015-08-21 | 2015-08-21 | Copper -manganese shunt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855591U true CN204855591U (en) | 2015-12-09 |
Family
ID=54746129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520636294.7U Expired - Fee Related CN204855591U (en) | 2015-08-21 | 2015-08-21 | Copper -manganese shunt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204855591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324307A (en) * | 2018-09-02 | 2019-02-12 | 青岛鼎信通讯科技有限公司 | A kind of electric energy meter Hz noise counteracting method based on PCB |
-
2015
- 2015-08-21 CN CN201520636294.7U patent/CN204855591U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324307A (en) * | 2018-09-02 | 2019-02-12 | 青岛鼎信通讯科技有限公司 | A kind of electric energy meter Hz noise counteracting method based on PCB |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102323459B (en) | Alternating magnetic field-resistant manganin current divider | |
| CN202903841U (en) | Electronic watt-hour meter capable of resisting alternating magnetic field interference | |
| CN103063895B (en) | Pliers-shaped anti-interference current transformer and transformer iron core grounding current testing system | |
| CN103575960A (en) | Giant magnetoresistance effect current sensor | |
| CN107271744B (en) | Lead structure of manganin shunt, PCB and wiring structure of PCB | |
| CN109001665A (en) | A kind of calibration equipment suitable for charging equipment direct current energy | |
| CN202177647U (en) | Alternating magnetic field resistant manganin diverter | |
| CN210720553U (en) | TMR current sensor with temperature compensation | |
| CN203535102U (en) | Colossal magnetoresistance effect current sensor | |
| CN204855591U (en) | Copper -manganese shunt | |
| CN212568918U (en) | Electronic current sensor with error self-checking function | |
| Moghe et al. | A novel low-cost smart current sensor for utility conductors | |
| McNeill et al. | High-fidelity low-cost electronic current sensor for utility power metering | |
| CN203287514U (en) | Current transformer DC magnetic bias error characteristic measuring device | |
| CN203606413U (en) | High-accuracy electronic compensation type current transformer | |
| CN110836987B (en) | Manganese-copper shunt of three-phase intelligent electric energy meter and application thereof | |
| CN206132836U (en) | Current inspecting circuit and device | |
| CN201749142U (en) | Double-coil current sensor | |
| CN106959427A (en) | A kind of anti-DC performance hanging net operation verification experimental verification method of electric power meter | |
| CN212568917U (en) | Electronic current sensor for electric energy meter | |
| CN202815037U (en) | Electronic electric energy meter capable of reducing interference on current divider caused by alternating magnetic filed | |
| CN204028161U (en) | A kind of current sample composite structure resisting strong magnetic for electric energy meter | |
| CN203672929U (en) | Manganin diverter with alternating magnetic field interference-proof property, relay and electronic electric energy meter | |
| CN102004231A (en) | DC and low frequency magnetic field signal detection device and detection method thereof | |
| CN203216967U (en) | Pliers-shaped anti-interference current transformer and transformer iron core grounding current testing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170124 Address after: HOLLEY Technology Park No. 181 310023 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Patentee after: HOLLEY METERING LIMITED Address before: Green Ting Road Yuhang District Cang Qian street of Hangzhou city Zhejiang province 310023 No. 1 Building 1 room 179 Patentee before: HANGZHOU YIJU ELECTRONIC TECHNOLOGY CO., LTD. Patentee before: Ma Hong |
|
| 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: 20151209 Termination date: 20200821 |