CN217238183U

CN217238183U - Anti-magnetic field current divider and electric power instrument thereof

Info

Publication number: CN217238183U
Application number: CN202220695398.5U
Authority: CN
Inventors: 朱永虎; 沈华飞
Original assignee: Tongxiang Weida Electronics Co ltd
Current assignee: Tongxiang Weida Electronics Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-19
Anticipated expiration: 2032-03-25

Abstract

The utility model relates to an anti-magnetic field shunt and electric power instrument thereof, comprising a shunt and a PCB board, wherein the shunt comprises a current inflow end, a resistor body and a current outflow end which are electrically connected in sequence, the shunt is provided with a voltage end, a first sampling end and a second sampling end in sequence, and the first sampling end and the second sampling end are respectively arranged at two sides of the center of the effective resistor body; be equipped with voltage circuit end, first sampling circuit end, second sampling circuit end on the PCB board, be equipped with in the PCB board and serve from first sampling circuit and transversely extend to the reclamation circuit between the second sampling circuit end position, the reclamation circuit transversely divide into two piece upper and lower the same areas to effective resistive element perpendicularly. Therefore, the accuracy of the magnetic field resistance of the instrument load current in milliampere level can be improved.

Description

Anti-magnetic field current divider and electric power instrument thereof

Technical Field

The utility model relates to an anti magnetic field current divider and electric power instrument thereof for among electric power instrument, especially be applicable to anti magnetic field current divider and electric power instrument in electric energy transmission field.

Background

The current diverter has the advantages of high metering accuracy, small temperature influence and low cost, and is widely applied to single-phase intelligent electric energy meters, particularly manganese-copper diverters; due to the characteristics of the installation position of the shunt and the connection of the sampling lead, the manganin shunt can generate induced current when being interfered by a power frequency magnetic field, and the accuracy of current metering can be seriously influenced.

The traditional manganin shunt carries out current sampling through a piece of manganin alloy, and the wiring is more dispersed, and the twisted pair of novel shunt needs to carry out point gluing fixed position or to make it difficult loose with the fixed shape of pyrocondensation pipe, and this is not only consuming time and power, still is unfavorable for automated production.

At present, according to the latest requirements of domestic and external electric energy meter industries, higher requirements are provided for the magnetic field interference resistance of the electric energy meter with small working current, and particularly, when the working current is 20mA or below, under the condition of magnetic field interference with the strength of 0.5mT from an uncertain direction, how to improve the accuracy of electric power detection is a problem which needs to be solved urgently in the industry.

Therefore, there is a need for an improved magnetic shunt and its power meter to improve the ability of the shunt to resist power frequency magnetic field interference.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti magnetic field current divider and electric power instrument that can anti power frequency magnetic field interference ability under less operating current.

In order to achieve the technical purpose, the utility model adopts the following technical means: a diamagnetic field shunt comprises a shunt and a PCB, wherein the PCB is installed on the shunt in a close manner, the shunt comprises a current inflow end, a resistor body and a current outflow end which are electrically connected in sequence, the shunt is sequentially provided with a voltage end, a first sampling end and a second sampling end along the current flowing direction, and the first sampling end and the second sampling end are respectively arranged on two sides of the center of a longitudinal effective resistor body along the current flowing direction; be equipped with on the PCB board and be used for electric connection respectively corresponding to voltage line end, first sampling end, the voltage line end of second sampling end, first sampling line end, second sampling line end on the shunt, the PCB board is equipped with the first side of pressing close to the shunt and the second side relative with the first side, be equipped with in the PCB board from first sampling line end transversely extend to the line of enclosing and cultivating of second sampling line end position, enclose and cultivate the line and transversely divide into two piece upper and lower the same areas to effective resistive element perpendicularly.

As a further improvement, the area of the reclamation line is corresponding to the area of the effective resistor body which is vertically closed by the external magnetic field.

As a further improvement of the utility model, the reclamation circuit is including being located on the first side for the first section that the first sampling end of electric connection just extends towards second sampling circuit end direction, connecting first section and crossing PCB board to second side and be close to the second section of second sampling circuit end, be located on the second side connect the second section and reverse to the third section of first sampling circuit end direction gyration extension, connect the third section and cross PCB board to first side and be close to the fourth section of first sampling circuit end, be located the fifth section of connecting the fourth section on the first side and extending towards second sampling circuit end direction, first section and fifth section electric separation.

As a further improvement of the present invention, the first section includes the first portion of drawing out of the straight line of connecting first sampling line end, the second section includes the vertical connecting portion that passes the PCB board, the third section includes the linear portion of drawing back and connects on draw back the portion ring-shaped around the portion of surrounding on first sampling line end outlying, the fourth section is including connecting around the portion and the vertical portion of revolving that passes the PCB board, the fifth section is including surrounding around in first sampling line end outlying first around the portion, from two linear second portions of drawing out and connecting two that extend around the portion first down the second portion of surrounding around in second sampling line end outlying, the second draw out the portion cloth in first portion both sides of drawing out.

As a further improvement of the present invention, the turning part and the second sampling line end are located on both sides of the first sampling line end.

As a further improvement of the utility model, the second is equipped with the first end of drawing forth on first side around the portion down, the second sampling end is equipped with the second on the second side and draws forth the end, first draw forth the end with the second draw forth the end in corresponding setting on first side, the second side of PCB board.

As a further improvement of the present invention, the upper surrounding portion and the first lower surrounding portion are correspondingly disposed on the first side surface and the second side surface of the PCB.

As a further improvement, the voltage end, the first sampling end and/or the second sampling end are protruding to be located for the side direction the salient punctiform of shunt, the PCB board is two-sided hole ization board at least, voltage line end, first sampling line end and/or second sampling line end are the metal loop poroid of via hole setting, voltage end, first sampling end and/or second sampling end wear to locate electric connection is realized in voltage line end, first sampling line end and/or the second sampling line end.

As a further improvement, the PCB is packaged with an electrical information module, the electrical information module comprises a filter element and an AD chip, and two grounding lines are extended.

The utility model discloses still provide following technical scheme, realize the utility model purpose:

an electric instrument comprises an electric instrument shell and the diamagnetic field shunt positioned in the electric instrument shell.

Compared with the prior art, the utility model discloses be equipped with in the PCB board and serve the enclosing and cultivate circuit that transversely extends to second sampling circuit position from first sampling circuit, enclose and cultivate the circuit and transversely divide into two piece upper and lower the same areas to effective resistive element perpendicularly. So set up, the interference killing feature is strong, the reliability is high, works as anti magnetic field current divider is even when being applied to minimum operating current, and in the face of stronger magnetic field interference, its ammeter precision difference can be minimum.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the anti-magnetic field current divider and a PCB board of the present invention.

Fig. 2 is an exploded view of the structure of fig. 1.

Fig. 3 is a schematic structural diagram of the anti-magnetic field current divider and the wiring terminal according to the first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the PCB of fig. 3 after packaging.

Fig. 5 is a schematic structural view of the PCB after the electronic component is mounted thereon.

Fig. 6 is a schematic structural diagram of the diamagnetic field splitter according to the first embodiment of the present invention and a PCB board with electronic components mounted thereon.

Fig. 7 is a schematic structural view of the PCB reclamation circuit of the present invention.

Fig. 8 is a front view of the first embodiment of the present invention of the anti-magnetic field splitter.

Fig. 9 is a top view of the anti-magnetic field splitter and the PCB according to the first embodiment of the present invention.

Fig. 10 is a schematic diagram of the anti-magnetic field shunt of the present invention in cooperation with a reclamation line.

Fig. 11 is a schematic structural diagram of a diamagnetic field splitter and a PCB according to a second embodiment of the present invention.

Fig. 12 is an exploded view of the structure of fig. 11.

Fig. 13 is a schematic structural view of the PCB of fig. 11 after packaging.

Fig. 14 is a schematic structural diagram of a third embodiment of the anti-magnetic field current divider and a PCB board of the present invention.

Fig. 15 is an exploded view of the structure of fig. 14.

Fig. 16 is a schematic structural view of the PCB of fig. 14 after packaging.

Reference numerals:

anti-magnetic field shunt 100

Current inlet 11 of current divider 1

Connection hole 111 resistor 12

Current outlet end 13 connecting hole 131

Voltage terminal 14 first sampling terminal 15

Second sampling end 16 PCB board module 2

PCB board 20 mainboard end 201

First sampling line port 2011 reclamation line 21

First segment 211 first lead out 2111

Second section 212 connecting portion 2121

Lead-back 2131 of third segment 213

Upper surround 2132 fourth segment 214

The fifth section 215 of the turn portion 2141

First lower surrounding part 2151 and second lead-out part 2152

Second lower surrounding portion 2153 and first leading-out end 2154

Second sampling line side 22 second outlet 221

Voltage line side 23 communication side 202

Grounding circuit 2021 packaging module 26

First side 24 and second side 25

Terminal

3, 4

fixing hole

31, 42

Terminal 2001 of diamagnetic field shunt 200

Extension 3001 of diamagnetic field shunt 300

Connecting hole 3002

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the field of shunt application, as the industry is skilled in the suppliers of market demand, the great knowledge of the problems existing in the prior art is provided by the Vida electronics Limited company, and the research and development team further invests huge capital on the basis of the original technology owned by the research and development team, performs long-time and large-scale tests, scheme screening and a large amount of customer investigation, and finally obtains the technical scheme of the utility model.

Fig. 1 to 16 are schematic structural diagrams of the anti-magnetic field

current splitters

100, 200 and 300 according to the present invention. Referring to fig. 1 to 10, in a first embodiment, a diamagnetic field splitter 100 includes a splitter 1 and a PCB 20, the PCB 20 is mounted on the splitter 1 in close proximity, the splitter 1 includes a current inlet 11, a resistor 12, and a current outlet 13 which are electrically connected in sequence, the splitter 1 is provided with a voltage end 14, a first sampling end 15, and a second sampling end 16 in sequence along a current flowing direction, and the first and second sampling ends 15, 16 are respectively disposed on two sides of a center of a longitudinal effective resistor 12 along the current flowing direction; be equipped with on the PCB board 20 and correspond to with electric connection respectively voltage line end 23, first sampling line end 2011, second sampling line end 22 of voltage end 14, first sampling end 15, second sampling end 16 on the shunt 1, PCB board 20 is equipped with the first side 24 of pressing close to shunt 1 and the second side 25 relative with first side 24, be equipped with in the PCB board 20 from the first sampling line end 2011 on lateral extension to the second sampling line end 22 position enclose the reclamation line 21, enclose reclamation line 21 perpendicularly and transversely divide into two piece upper and lower the same areas effective resistor body 12. So set up, reclamation circuit 21 divides effective resistor body 12 into the region that the area is the same on PCB board 20, when facing to under the high strength magnetic field interference in the uncertain direction, the electric current that resistor body 12 cut magnetic induction line and produce can offset better with the electric current that reclamation circuit 21 cut magnetic induction line and produce, when anti magnetic field shunt 100 even apply to minimum operating current and face stronger magnetic field interference, its ammeter precision difference still can be minimum, for example at operating current 20mA or below, under the intensity is 0.5mT magnetic field interference, the ammeter precision error of anti magnetic field shunt 100 can be less than 10%, so can realize the splendid anti magnetic field interference of electric power instrument under minimum operating current.

The area enclosed by the enclosing circuit 21 corresponds to the area of the effective resistor body 12 which is longitudinally dried by the external magnetic field. So set up, when the resistive element 12 vertically receives alternating magnetic field interference along the current flow direction, the current that reclamation circuit encloses 21 and effective resistive element 12 cutting magnetic induction line and produce can offset each other, so, diamagnetic field shunt 100 receives under the interference of high strength magnetic field in uncertain direction, all can improve diamagnetic field interference better.

The reclamation line 21 includes a first section 211 on the first side 24 for electrically connecting the first sampling terminal 15 and extending toward the second sampling line terminal 22, a second section 212 connecting the first section 211 and traversing the PCB 20 to the second side 25 and approaching the second sampling line terminal 22, a third section 213 on the second side 25 connecting the second section 212 and revolving and extending back toward the first sampling line terminal 2011, a fourth section 214 connecting the third section 213 and traversing the PCB 20 to the first side 24 and approaching the first sampling line terminal 2011, and a fifth section 215 on the first side 24 connecting the fourth section 214 and extending toward the second sampling line terminal 22, wherein the first section 211 is electrically separated from the fifth section 215. So arranged, the reclamation line 21 is able to meet the sampling requirements from the lateral direction; meanwhile, viewed from the longitudinal direction, the circuit can be arranged into a ring circuit, and the circuit has a corresponding reclamation area, and the related circuits in the reclamation area can not touch each other to cause short circuit.

Specifically, the first segment 211 includes a linear first lead-out portion 2111 connected to the first sampling line end 2011, the second segment 212 includes a connecting portion 2121 vertically penetrating through the PCB 20, the third segment 213 includes a linear upper lead-back portion 2131 and an upper surrounding portion 2132 connected to the upper lead-back portion 2131 and annularly surrounding the periphery of the first sampling line end 2011, the fourth segment 214 includes a turning portion 2141 connected to the upper surrounding portion 2132 and vertically penetrating through the PCB 20, the fifth segment 215 includes a first lower surrounding portion 2151 surrounding the periphery of the first sampling line end 2011, two linear second lead-out portions 2152 extending from the first lower surrounding portion 2151 and a second lower surrounding portion 2153 connected to the two second lead-out portions 2152 and surrounding the periphery of the second sampling line end 22, and the second lead-out portions 2152 are distributed on two sides of the first lead-out portion 2111. So set up, the setting of the portion 2132 that surrounds, 2151, 2153 can avoid adjacent circuit to take place the short circuit better, satisfies sampling requirement and reclamation area requirement better simultaneously.

The turnarounds 2141 and the second sampling line end 22 are located on both sides of the first sampling line end 2011. With this arrangement, in this embodiment, in order to prevent the connecting portion 2121 from making short-circuit contact with the second sampling line end 22, the connecting portion 2121 does not completely reach the second sampling line end 22, and the revolving portion 2141 is disposed outside the first sampling line end 2011, so that the reclamation line 21 has an area corresponding to an area where the resistor 12 is longitudinally subjected to interference of an external magnetic field.

The second lower surrounding portion 2153 is provided with a first leading-out end 2154 on the first side surface 24, the second sampling end 16 is provided with a second leading-out end 221 on the second side surface 25, and the first leading-out end 2154 and the second leading-out end 221 are correspondingly arranged on the first side surface 24 and the second side surface 25 of the PCB 20. In this way, the first outlet 2154 and the second outlet 221 are disposed on the PCB 20 in a vertical direction, so that the sampling data is more accurate and less susceptible to electromagnetic interference.

The upper surrounding portion 2132 and the first lower surrounding portion 2151 are disposed on the first side surface 24 and the second side surface 25 of the PCB 20, respectively. So set up, reclamation line 21 receives external magnetic field area of drying out in all directions can better with resistive element 12 is vertically to be received external magnetic field area of drying out corresponding.

Voltage end 14, first sampling end 15 and/or second sampling end 16 are protruding locating for the side direction the salient punctiform of shunt 1, and lie in the coplanar, PCB board 20 is the two-sided hole ization board at least, voltage line end 23, first sampling line end 2011 and/or second sampling line end 22 are the metal loop poroid of via hole setting, voltage end 14, first sampling end 15 and/or second sampling end 16 wear to locate realize electric connection in voltage line end 23, first sampling line end 2011 and/or the second sampling line end 22. With such an arrangement, when the PCB 20 and the shunt 1 are mounted, the mounting and the electrical connection can be achieved only by inserting the voltage terminal 14, the first sampling terminal 15 and/or the second sampling terminal 16 in the metal holes of the voltage line terminal 23, the first sampling line terminal 2011 and/or the second sampling line terminal 22, and welding the metal holes.

The PCB 20 is packaged with an electrical information module, that is, a package module 26 is formed together, and the electrical information module includes a filter element and an AD chip, and two grounding lines 2021 extend from the electrical information module. With such an arrangement, the grounding circuit 2021 can effectively prevent surge voltage from breaking through the module elements.

The diamagnetic field splitter 100 is provided with a current inlet end 11 and a current outlet end 13, which are respectively provided with a connecting

hole

111, 131, the connecting

holes

111, 131 are respectively used for riveting a

terminal

3, 4, the

terminal

3, 4 is provided with a fixing hole 31, 41 for fixing on a housing (not shown) of an electric power instrument, and the

terminal

3, 4 is used for electrically fixing a cable.

Referring to fig. 11 to 13, for a schematic structural view of a diamagnetic field splitter 200 according to a second embodiment of the present invention, terminals 2001 longitudinally and integrally extend from two sides of the diamagnetic field splitter 200, so that the diamagnetic field splitter is convenient to manufacture and assemble.

Referring to fig. 14 to 16, for the utility model discloses third embodiment diamagnetic field current divider 300 structure schematic diagram, the vertical integrative extension in diamagnetic field current divider 300 both sides has extension 3001, be equipped with connecting hole 3002 on the extension 3001, be used for riveting the terminal button in the connecting hole 3002, be convenient for perpendicular to terminal button realization riveting, also can get rid of connecting hole 3002 and weld.

The utility model discloses still can include fourth embodiment diamagnetic field current divider structure, the connecting hole is used for the level riveting terminal button, and the different riveting of terminal button of being convenient for also can get rid of the connecting hole and weld.

The utility model discloses still protect an electric power instrument (not shown), include electric power instrument shell (not shown) and be located in the electric power instrument shell diamagnetic field

current divider

100, 200, 300. The main core component of the power instrument is the magnetic field interference resistance of the

magnetic field splitters

100, 200 and 300, and the magnetic field interference resistance of the

magnetic field splitters

100, 200 and 300 under the condition of small working current and high magnetic field interference can enable the power instrument to have excellent power data detection precision, so that the power instrument has the market competitive advantage of the core.

Taking the first embodiment as an example, the manufacturing method of the

anti-magnetic field shunt

100, 200, 300 of the present invention includes manufacturing the shunt 1 and the PCB board 20 separately; manufacturing the PCB board 20, wherein the PCB board 20 comprises a main board end 201 and a communication end 202, and arranging the reclamation line 21 on the main board end 201 of the PCB board 20; the voltage end 14, the first sampling end 15 and the second sampling end 16 on the shunt 1 are respectively and electrically connected with the voltage line end 23, the first sampling line end 2011 and the second sampling line end 22 on the PCB 20; arranging components on the main board end 201 of the PCB 20 to form a PCB module 2, and encapsulating the PCB module 2 to expose the communication end 202. The steps are not limited in the front and the back, so that the components of the PCB module 2 can be better protected under the conditions of high temperature and high humidity, and the shunt 1, the PCB 20 and the mounting method between the shunt 1 and the PCB 20 can enable the anti-magnetic field shunts 100, 200 and 300 to have excellent anti-magnetic field interference under the conditions of small working current and high magnetic field interference, and improve the accuracy of electric data detection of an electric instrument.

The directions of the arrows shown in fig. 6, 11, 12, 13, and 15 are current directions.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

A series of terms of orientation, such as front, rear, left, right, upper, lower, and the like, used for each technical feature of the above-described embodiments are only used for convenience of description and understanding of each technical feature, and do not limit the specific direction in practical use of the technical solution.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A diamagnetic field shunt is characterized in that: comprises a shunt and a PCB board, wherein the PCB board is arranged on the shunt in a close proximity way,

the current divider comprises a current inflow end, a resistor body and a current outflow end which are electrically connected in sequence, the current divider is sequentially provided with a voltage end, a first sampling end and a second sampling end along the flowing direction of current, and the first sampling end and the second sampling end are respectively arranged on two sides of the center of the longitudinal effective resistor body along the flowing direction of the current;

be equipped with on the PCB board and be used for electric connection respectively corresponding to voltage line end, first sampling end, the voltage line end of second sampling end, first sampling line end, second sampling line end on the shunt, the PCB board is equipped with the first side of pressing close to the shunt and the second side relative with the first side, it serves the line of enclosing and cultivating to extend to between the second sampling line end position from first sampling line to be equipped with in the PCB board, enclose and cultivate the line and transversely divide into two piece upper and lower the same areas to effective resistive element perpendicularly.

2. The diamagnetic field splitter according to claim 1, wherein: the area enclosed by the reclamation line corresponds to the area of the effective resistor body which is longitudinally dried by an external magnetic field.

3. The diamagnetic field splitter according to claim 1, wherein: the reclamation line comprises a first section, a second section, a third section, a fourth section and a fifth section, wherein the first section is located on the first side face and used for electrically connecting the first sampling end and extending towards the direction of the second sampling line end, the second section is connected with the first section and transversely penetrates through the second side face of the PCB board, the second section is close to the second sampling line end, the third section is located on the second side face and reversely extends in a revolving mode towards the direction of the first sampling line end, the fourth section is connected with the third section and transversely penetrates through the first side face of the PCB board, the fourth section is close to the first sampling line end, the fifth section is located on the first side face and connected with the fourth section and extends towards the direction of the second sampling line end, and the first section is electrically separated from the fifth section.

4. A diamagnetic field splitter according to claim 3, wherein: the first section comprises a linear first leading-out part connected with a first sampling line end, the second section comprises a connecting part vertically penetrating through a PCB, the third section comprises a linear upper leading-back part and a connecting part, the upper leading-back part is annularly surrounded on the periphery of the first sampling line end, the fourth section comprises a rotary part which is connected with the upper leading-back part and vertically penetrates through the PCB, the fifth section comprises a first lower surrounding part surrounding the periphery of the first sampling line end, two linear second leading-out parts extending from the first lower surrounding part and two second leading-out parts connecting the second leading-out parts surrounding the periphery of the second sampling line end, and the second leading-out parts are distributed on two sides of the first leading-out part.

5. The diamagnetic field splitter according to claim 4, wherein: the rotary part and the second sampling line end are positioned on two sides of the first sampling line end.

6. The diamagnetic field splitter of claim 4, wherein: the second lower surrounding part is provided with a first leading-out end on the first side surface, the second sampling end is provided with a second leading-out end on the second side surface, and the first leading-out end and the second leading-out end are correspondingly arranged on the first side surface and the second side surface of the PCB.

7. The diamagnetic field splitter according to claim 4, wherein: the upper surrounding part and the first lower surrounding part are correspondingly arranged on the first side surface and the second side surface of the PCB.

8. The diamagnetic field splitter according to claim 1, wherein: voltage end, first sampling end and/or second sampling end are protruding to be located for the side direction the salient punctiform of shunt, the PCB board is two-sided hole ization board at least, voltage line end, first sampling line end and/or second sampling line end are the metal loop poroid of via hole setting, voltage end, first sampling end and/or second sampling end wear to locate realize electric connection in voltage line end, first sampling line end and/or the second sampling line end.

9. The diamagnetic field splitter according to claim 1, wherein: the PCB is packaged with an electrical information module, wherein the electrical information module comprises a filter element and an AD chip, and two grounding lines extend out of the electrical information module.

10. An electric power meter, characterized by: comprising a power meter housing and a diamagnetic field splitter according to any one of claims 1 to 9 located within the power meter housing.