CN202305613U - Manganin electric energy meter - Google Patents
Manganin electric energy meter Download PDFInfo
- Publication number
- CN202305613U CN202305613U CN2011204189688U CN201120418968U CN202305613U CN 202305613 U CN202305613 U CN 202305613U CN 2011204189688 U CN2011204189688 U CN 2011204189688U CN 201120418968 U CN201120418968 U CN 201120418968U CN 202305613 U CN202305613 U CN 202305613U
- Authority
- CN
- China
- Prior art keywords
- sampling signal
- copper
- manganese
- current
- current sampling
- 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
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model provides a manganin electric energy meter, which comprises an electric meter circuit board, a manganin mutual inductor, a voltage sampling signal wire and two current sampling signal wires. One ends of the current sampling signal wires are connected with one end of the manganin mutual inductor, and the two current sampling signal wires cling to the surface of the manganin mutual inductor to meet with each other in the shortest distance to be twisted into one current sampling signal twister. One end of the voltage sampling signal wire is connected with the other end of the manganin mutual inductor, a closed loop circuit with the area as S1 is defined by the current sampling signal twister, the voltage sampling signal wire and the manganin mutual inductor, a closed loop circuit with the area as S2 is defined by the current sampling signal twister and the voltage sampling signal wire, and the current direction of the S1 is opposite to that of the S2. The other end of the current sampling signal twister is twisted with the other end of the voltage sampling signal wire to be connected with the electric meter circuit board. The manganin electric energy meter can completely remove interference of an alternating magnetic field on metering accuracy of current signals to achieve accurate sampling of current and voltage of manganin.
Description
Technical field
The utility model belongs to the electronic instrument technical field, relates to a kind of electric energy meter, is specifically related to a kind of copper-manganese electric energy meter.
Background technology
Existing single-phase metering electric energy meter in order to reduce cost, generally all adopts copper-manganese to gather current signal.A voltage sampling signal line on the copper-manganese all links to each other with electric energy meter circuit plate with two current sampling signal lines; Wherein the vertical cabling mode of two current sampling signal line employings can form a bigger closed-loop path S3 between copper-manganese, current signal line, meter circuit plate, and is as shown in Figure 1.When there are alternating electromagnetic field in transformer leakage field or outside; Can know according to the law of electromagnetic induction; When the magnetic flux that passes closing coil changes; Having corresponding induction electromotive force in coil produces; Its relational expression is:
wherein φ is the magnetic flux that passes closing coil, and t is the time, and the induction electromotive force that promptly produces is to hinder magnetic flux change.This induction electromotive force E can exert an influence to the voltage on the copper-manganese, causes the variation of current sampling signal, and then the measuring accuracy of ammeter is exerted an influence, and the measuring accuracy influence of particularly little current signal is very big.Therefore, according to martingale shown in Figure 1, the area coil that two current sampling signal lines and copper-manganese, meter circuit plate surround is quite big, receives the influence of transformer leakage field or outside alternating electromagnetic field quite big.
The utility model content
The shortcoming of prior art in view of the above, the purpose of the utility model is to provide a kind of copper-manganese electric energy meter, and this electric energy meter can reduce the interference of alternating magnetic field to the current signal measuring accuracy.
For realizing above-mentioned purpose and other relevant purposes, the utility model provides a kind of copper-manganese electric energy meter.
A kind of copper-manganese electric energy meter comprises meter circuit plate, copper-manganese mutual inductor, a voltage sampling signal line, two current sampling signal lines; One end of said two current sampling signal lines links to each other with an end of said copper-manganese mutual inductor; Meet with the shortest distance in the surface that said two current sampling signal lines are close to the copper-manganese mutual inductor, and twisted together at the place that meets for the first time, forms a current sampling signal rope-lay conductor; One end of said voltage sampling signal line links to each other with the other end of copper-manganese mutual inductor; Said current sampling signal rope-lay conductor and said voltage sampling signal line and copper-manganese mutual inductor cross an area size and are the closed-loop path of S1; The closed-loop path that it is S2 that said current sampling signal rope-lay conductor of while and said voltage sampling signal line also cross an area; The other end of said current sampling signal rope-lay conductor links to each other with the meter circuit plate with the other end of said voltage sampling signal line is twisted together; Direction of current in the closed-loop path that said area size is S1 and area size are the current opposite in direction in the closed-loop path of S2.
As a kind of preferred version of the utility model, S2=S1.
As the another kind of preferred version of the utility model, said area size is directly joined for the closed-loop path of S2 for the closed-loop path of S1 and area are big or small.
As another preferred version of the utility model, said area size is to join through one section current sampling signal rope-lay conductor twisted together and voltage sampling signal line between the closed-loop path of S2 for the closed-loop path of S1 and area are big or small.
As another preferred version of the utility model, said current sampling signal rope-lay conductor also centers on that at least one pair of area equates, the closed-loop path of current opposite in direction with said voltage sampling signal line.
As stated, the described copper-manganese electric energy meter of the utility model has following beneficial effect: the described copper-manganese electric energy meter of the utility model can reduce the interference of alternating magnetic field to the measuring accuracy of current signal, realizes the accurate sampling to the current/voltage on the copper-manganese.
Description of drawings
Fig. 1 is the connection synoptic diagram of the sampled signal line of traditional copper-manganese electric energy meter.
Fig. 2 is the connection synoptic diagram of the sampled signal line of embodiment one described copper-manganese electric energy meter.
Fig. 3 is the connection synoptic diagram of the sampled signal line of embodiment two described copper-manganese electric energy meters.
The element numbers explanation
1, meter circuit plate; 2, copper-manganese mutual inductor;
3, voltage sampling signal line; 4, current sampling signal rope-lay conductor.
Embodiment
Below through the embodiment of specific instantiation explanation the utility model, those skilled in the art can be understood other advantages and the effect of the utility model easily by the content that this instructions disclosed.The utility model can also be implemented or use through other different embodiment, and each item details in this instructions also can be carried out various modifications or change based on different viewpoints and application under the spirit that does not deviate from the utility model.
See also accompanying drawing.Need to prove; The diagram that is provided in the present embodiment is only explained the basic conception of the utility model in a schematic way; Satisfy only show in graphic with the utility model in relevant assembly but not component count, shape and plotted when implementing according to reality; Kenel, quantity and the ratio of each assembly can be a kind of random change during its actual enforcement, and its assembly layout kenel also maybe be more complicated.
Below in conjunction with accompanying drawing the embodiment of the utility model is done further explain.
Embodiment one
Present embodiment provides a kind of copper-manganese electric energy meter, and is as shown in Figure 2, comprises meter circuit plate 1, copper-manganese mutual inductor 2, voltage sampling signal line 3, two current sampling signal lines; One end of said two current sampling signal lines links to each other with an end of said copper-manganese mutual inductor 2; Meet with the shortest distance in the surface that said two current sampling signal lines are close to copper-manganese mutual inductor 2, and twisted together at the place that meets for the first time, forms a current sampling signal rope-lay conductor 4; One end of said voltage sampling signal line 3 links to each other with the other end of copper-manganese mutual inductor 2; Said current sampling signal rope-lay conductor 4 crosses an area size with said voltage sampling signal line 3 and copper-manganese mutual inductor 2 and is the closed-loop path of S1; The closed-loop path that it is S2 that simultaneously said current sampling signal rope-lay conductor 4 and said voltage sampling signal line 3 also cross an area; The other end of said current sampling signal rope-lay conductor 4 links to each other with meter circuit plate 1 with the other end of said voltage sampling signal line 3 is twisted together.Direction of current in the closed-loop path that said area size is S1 and area size are the current opposite in direction in the closed-loop path of S2.Said area size is directly joined for the closed-loop path of S2 for the closed-loop path of S1 and area are big or small.
Meet the for the first time area S1 of twisting of two current sampling signal lines is as far as possible little, and the circle area of twisting (being S2) is suitable with S1 as far as possible more afterwards, at last with two current sampling signal line twistings always up to linking to each other with the meter circuit plate.Certainly, when S1=S2, the effect of this programme is optimum, can realize eliminating fully the interference of alternating magnetic field to the measuring accuracy of current signal.
Embodiment two
Present embodiment provides a kind of copper-manganese electric energy meter, and is as shown in Figure 3, comprises meter circuit plate 1, copper-manganese mutual inductor 2, voltage sampling signal line 3, two current sampling signal lines; One end of said two current sampling signal lines links to each other with an end of said copper-manganese mutual inductor 2; Meet with the shortest distance in the surface that said two current sampling signal lines are close to copper-manganese mutual inductor 2, and twisted together at the place that meets for the first time, forms a current sampling signal rope-lay conductor 4; One end of said voltage sampling signal line 3 links to each other with the other end of copper-manganese mutual inductor 2; Said current sampling signal rope-lay conductor 4 crosses an area size with said voltage sampling signal line 3 and copper-manganese mutual inductor 2 and is the closed-loop path of S1; The closed-loop path that it is S2 that simultaneously said current sampling signal rope-lay conductor 4 and said voltage sampling signal line 3 also cross an area, and S2=S1; The other end of said current sampling signal rope-lay conductor 4 links to each other with meter circuit plate 1 with the other end of said voltage sampling signal line 3 is twisted together.Direction of current in the closed-loop path that said area size is S1 and area size are the current opposite in direction in the closed-loop path of S2.Said area size is to join through one section current sampling signal rope-lay conductor twisted together and voltage sampling signal line between the closed-loop path of S2 for the closed-loop path of S1 and area are big or small.
The difference of present embodiment and embodiment one is: said area size is directly not join between the closed-loop path of S2 for the closed-loop path of S1 and area are big or small, but joins through one section current sampling signal rope-lay conductor twisted together and voltage sampling signal line.
Embodiment three
The difference of present embodiment and embodiment one, two is: said current sampling signal rope-lay conductor and said voltage sampling signal line except center on area size for S1 and area size for the closed-loop path of S2, also center on that at least one pair of area is equal, the closed-loop path of current opposite in direction.
The utility model done modification to present common vertical cabling mode, reduced the area that surrounds between two current sampling signal lines and the copper-manganese at first as much as possible; Secondly the area S1 that surrounds between two current sampling signal rope-lay conductors and voltage sampling signal line and the copper-manganese equates with the area S2 that current sampling signal rope-lay conductor and voltage sampling signal line surround.Because both are in the opposite direction by the induction electromotive force equal and opposite in direction that alternating magnetic field disturb to produce, can cancel out each other, so can the eliminating transformer leakage field or outside alternating electromagnetic field to the influence of copper-manganese current sampling signal.
The utility model is owing to having eliminated the influence to the copper-manganese current sampling signal of transformer leakage field or outside alternating electromagnetic field; Not only solved the problem of the small-signal precision in the ammeter metering; Also solved the voltage influence amount problem in the ammeter metering; The magnetic flux change that change in voltage causes can not exert an influence to the small-signal precision equally.
So the described copper-manganese electric energy meter of the utility model has effectively overcome various shortcoming of the prior art, thereby the tool high industrial utilization.
The foregoing description is the principle and the effect thereof of illustrative the utility model only, but not is used to limit the utility model.Any be familiar with this technological personage all can be under the spirit and category of the utility model, the foregoing description is modified or is changed.Therefore, have common knowledge the knowledgeable under such as in the technical field, must contain by the claim of the utility model not breaking away from all equivalence modification or changes that spirit that the utility model discloses and technological thought are accomplished down.
Claims (5)
1. copper-manganese electric energy meter, it is characterized in that: said copper-manganese electric energy meter comprises meter circuit plate, copper-manganese mutual inductor, a voltage sampling signal line, two current sampling signal lines; One end of said two current sampling signal lines links to each other with an end of said copper-manganese mutual inductor; Meet with the shortest distance in the surface that said two current sampling signal lines are close to the copper-manganese mutual inductor, and twisted together at the place that meets for the first time, forms a current sampling signal rope-lay conductor; One end of said voltage sampling signal line links to each other with the other end of copper-manganese mutual inductor; Said current sampling signal rope-lay conductor and said voltage sampling signal line and copper-manganese mutual inductor cross an area size and are the closed-loop path of S1; The closed-loop path that it is S2 that said current sampling signal rope-lay conductor of while and said voltage sampling signal line also cross an area; The other end of said current sampling signal rope-lay conductor links to each other with the meter circuit plate with the other end of said voltage sampling signal line is twisted together; Direction of current in the closed-loop path that said area size is S1 and area size are the current opposite in direction in the closed-loop path of S2.
2. copper-manganese electric energy meter according to claim 1 is characterized in that: S2=S1.
3. copper-manganese electric energy meter according to claim 1 and 2 is characterized in that: said area size is directly joined for the closed-loop path of S2 for the closed-loop path of S1 and area are big or small.
4. copper-manganese electric energy meter according to claim 1 and 2 is characterized in that: said area size is to join through one section current sampling signal rope-lay conductor twisted together and voltage sampling signal line between the closed-loop path of S2 for the closed-loop path of S1 and area are big or small.
5. copper-manganese electric energy meter according to claim 1 and 2 is characterized in that: said current sampling signal rope-lay conductor also centers on that at least one pair of area equates, the closed-loop path of current opposite in direction with said voltage sampling signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204189688U CN202305613U (en) | 2011-10-28 | 2011-10-28 | Manganin electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204189688U CN202305613U (en) | 2011-10-28 | 2011-10-28 | Manganin electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305613U true CN202305613U (en) | 2012-07-04 |
Family
ID=46374485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204189688U Expired - Fee Related CN202305613U (en) | 2011-10-28 | 2011-10-28 | Manganin electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305613U (en) |
Cited By (6)
| 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 |
| CN103063891A (en) * | 2013-01-10 | 2013-04-24 | 浙江力辉电器有限公司 | Anti-interference intelligent electric meter and anti-interference method of intelligent electric meter |
| CN103439547A (en) * | 2013-09-12 | 2013-12-11 | 南京能瑞自动化设备股份有限公司 | Intelligent electric meter relay support assembly capable of eliminating power frequency magnetic field interference |
| CN103913609A (en) * | 2012-12-31 | 2014-07-09 | 深圳浩宁达仪表股份有限公司 | Measurement instrument free from effects of alternating external magnetic field and realization method thereof |
| CN107621561A (en) * | 2017-09-07 | 2018-01-23 | 宁波三星医疗电气股份有限公司 | A kind of antimagnetic electric energy meter of current sample power frequency |
| CN110836987A (en) * | 2019-11-25 | 2020-02-25 | 新沂市鑫洋电子有限公司 | Manganese-copper shunt of three-phase intelligent electric energy meter and application thereof |
-
2011
- 2011-10-28 CN CN2011204189688U patent/CN202305613U/en not_active Expired - Fee Related
Cited By (9)
| 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 |
| CN103913609A (en) * | 2012-12-31 | 2014-07-09 | 深圳浩宁达仪表股份有限公司 | Measurement instrument free from effects of alternating external magnetic field and realization method thereof |
| CN103063891A (en) * | 2013-01-10 | 2013-04-24 | 浙江力辉电器有限公司 | Anti-interference intelligent electric meter and anti-interference method of intelligent electric meter |
| CN103063891B (en) * | 2013-01-10 | 2014-11-26 | 浙江力辉电器有限公司 | Anti-interference intelligent electric meter and anti-interference method of intelligent electric meter |
| CN103439547A (en) * | 2013-09-12 | 2013-12-11 | 南京能瑞自动化设备股份有限公司 | Intelligent electric meter relay support assembly capable of eliminating power frequency magnetic field interference |
| CN103439547B (en) * | 2013-09-12 | 2017-07-18 | 南京能瑞自动化设备股份有限公司 | Solve the intelligent electric meter relay bracket component of power frequency magnetic field interference |
| CN107621561A (en) * | 2017-09-07 | 2018-01-23 | 宁波三星医疗电气股份有限公司 | A kind of antimagnetic electric energy meter of current sample power frequency |
| CN110836987A (en) * | 2019-11-25 | 2020-02-25 | 新沂市鑫洋电子有限公司 | Manganese-copper shunt of three-phase intelligent electric energy meter and application thereof |
| CN110836987B (en) * | 2019-11-25 | 2021-12-24 | 新沂市鑫洋电子有限公司 | Manganese-copper shunt of three-phase intelligent electric energy meter and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202305613U (en) | Manganin electric energy meter | |
| CN203191419U (en) | Intelligent electricity meter with diamagnetic structured electromagnetic current transformers | |
| CN107271744A (en) | The Wiring structure of the pin configuration of manganese copper diverter, pcb board and pcb board | |
| CN208172223U (en) | A kind of stray transformer flux detection device | |
| WO2021169456A1 (en) | Shunt lead structure, electric power instrument and method for manufacturing shunt lead structure | |
| CN202870138U (en) | Manganin shunt and electronic Watt-hour meter | |
| CN102401855A (en) | Electric digital instrument using Rogowski coil current transformer | |
| CN203025249U (en) | Single-phase metering module for single-phase electric energy meter | |
| CN207894995U (en) | A kind of single-phase measurement module of anti-magnetic interference | |
| CN201749142U (en) | Double-coil current sensor | |
| CN202066891U (en) | Heavy current circuit detection structure for ore heating submerged electric furnace | |
| CN205230781U (en) | Three -phase current transformer's magnetism shielding structure based on air core coil | |
| CN103021618B (en) | A kind of based on magnetically focused equiratio line coil array | |
| CN108508266A (en) | Manganese copper diverter and electronic electric energy meter | |
| CN203929850U (en) | A kind of current sampling circuit | |
| CN106918371B (en) | A kind of force transmission mechanism of flowmeter | |
| CN202120749U (en) | Mutual inductor for electric energy meters of state grid and agricultural grid | |
| CN104459265B (en) | The balanced compensated transformer measurement circuit of mutual inductor spurious impedance | |
| CN201689775U (en) | Manganin mutual inductor preventing alternating magnetic field | |
| CN201681100U (en) | Manganin electric energy meter capable of preventing alternating magnetic field interference | |
| CN205751739U (en) | A kind of based on the close electric current conversion magnetic field generation device around conductor structure | |
| CN107576927A (en) | A kind of direct current of electric energy meter and the experimental rig of even-order harmonic influence amount | |
| CN204991448U (en) | A multiple spot response count device that is used for copper line spooling equipment | |
| CN203720244U (en) | Hall electric current sensor | |
| CN203502575U (en) | Integrated three dimensional Hall probe |
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: 20120704 Termination date: 20201028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |