CN114545051A - Electric energy meter assembly - Google Patents
Electric energy meter assembly Download PDFInfo
- Publication number
- CN114545051A CN114545051A CN202210214693.9A CN202210214693A CN114545051A CN 114545051 A CN114545051 A CN 114545051A CN 202210214693 A CN202210214693 A CN 202210214693A CN 114545051 A CN114545051 A CN 114545051A
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- China
- Prior art keywords
- connecting rod
- electric energy
- energy meter
- sleeve
- knob
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
Abstract
The invention belongs to the technical field of electric power construction, and discloses an electric energy meter assembly which comprises an electric energy meter and an auxiliary replacing part, wherein the electric energy meter comprises an electric meter body and a plurality of wiring terminals arranged on the electric meter body, each wiring terminal is provided with a spring piece, and the spring pieces are made of conductive materials; the auxiliary replacing parts are arranged in a plurality of numbers, the auxiliary replacing parts correspond to the wiring terminals one by one, each auxiliary replacing part comprises a connecting rod, an insulating part arranged at one end of the connecting rod and a sleeve positioned at the other end of the connecting rod, the connecting rod is made of a conductive material, and the insulating part and the sleeve are made of insulating materials; the wire can peg graft on the connecting rod, and the connecting rod can wear to locate the wiring end and with wiring end sliding fit, the outer wall of connecting rod can contact with the spring leaf to make wire and spring leaf electricity be connected, the connecting rod can partly stretch into in the sleeve, so that insulating part and spring leaf contact, thereby make supplementary more change the piece uncharged.
Description
Technical Field
The invention relates to the technical field of electric power construction, in particular to an electric energy meter assembly.
Background
An electric energy meter is an instrument for measuring electric energy, also called watt-hour meter, fire meter, kilowatt-hour meter, and refers to instruments for measuring various electric quantities. During the operation and maintenance meter changing process of the existing electric energy meter, interphase short circuit or grounding short circuit between phase lines and zero lines, which are caused by mutual collision of phase lines, easily occurs, and operation and maintenance personnel have great electric shock risks. And the problem of disordered phase sequence is easily caused in the process of replacing the electric energy meter, and the wiring efficiency is low.
Disclosure of Invention
The invention aims to provide an electric energy meter assembly which can reduce the electric shock risk of operation and maintenance personnel and improve the wiring efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electrical energy meter assembly comprising:
the electric energy meter comprises an electric meter body and a plurality of wiring ends arranged on the electric meter body, wherein each wiring end is provided with a spring piece, and the spring pieces are made of conductive materials;
the auxiliary replacing parts are arranged in a plurality of corresponding to the wiring terminals one by one, each auxiliary replacing part comprises a connecting rod, an insulating part arranged at one end of the connecting rod and a sleeve positioned at the other end of the connecting rod, the connecting rod is made of a conductive material, and the insulating part and the sleeve are both made of insulating materials;
the wire can peg graft on the connecting rod, the connecting rod can wear to locate wiring end and with wiring end sliding fit, the outer wall of connecting rod can with the spring leaf contact, so that the wire with the spring leaf electricity is connected, the connecting rod can partly stretch into in the sleeve, so that the insulating part with the spring leaf contact.
Preferably, an insertion groove is formed in the outer wall of the connecting rod, the wire can be partially arranged in the insertion groove, and the live end of the wire abuts against the groove wall of the insertion groove.
Preferably, the insertion groove is a stepped groove.
Preferably, the inserting groove is of an annular structure, the connecting rod is of a cylindrical structure, and the axis of the inserting groove and the axis of the connecting rod are arranged at an included angle.
Preferably, a clamping member is arranged on the inner wall of the insertion groove, and the clamping member is used for clamping the wire.
Preferably, the outer wall of the connecting rod is provided with an external thread, the sleeve is provided with an internal thread, the internal thread is in threaded fit with the external thread, and the lead can be wound on the connecting rod and is partially positioned between two adjacent threads of the external thread.
Preferably, the insulator is a hollow conical structure having a large end and a small end, the small end facing the sleeve and being connected to the connecting rod.
Preferably, the auxiliary replacing part further comprises a knob, the knob is arranged at one end of the connecting rod and is used for being held by a human hand, and the knob can rotate and drive the connecting rod to rotate so that the connecting rod partially extends into the sleeve.
Preferably, the electric energy meter comprises a limiting member, and the limiting member is used for limiting the rotation of the knob.
Preferably, the limiting member is partially located in the insulating member, and the limiting member can abut against the knob to limit the rotation of the knob.
The invention has the beneficial effects that:
the electric energy meter assembly provided by the embodiment of the invention is in uncharged operation when a new electric energy meter is installed, firstly, the conducting wire is inserted on the connecting rod, then, the connecting rod is arranged on the wiring terminal of the electric energy meter in a penetrating way, the spring piece of the wiring terminal can be contacted with the outer wall of the connecting rod, current can be transmitted to the electric energy meter through the conducting wire, the connecting rod and the spring piece, so that the electric connection between the conducting wire and the wiring terminal of the electric energy meter is realized, and the plurality of wiring terminals of the electric energy meter are sequentially connected with the auxiliary replacing part through the steps, so that the installation of the new electric energy meter is completed. When the electric energy meter breaks down and needs to be changed, the connecting rod is made to drive the wire part to be arranged in the sleeve, at the moment, the insulating part is in contact with the spring piece, the insulating part and the sleeve are made of insulating materials, so that the auxiliary replacing part is integrally uncharged, the auxiliary replacing part and the wire are taken out from the wiring end of the electric energy meter together, a plurality of auxiliary replacing parts and a plurality of wiring end one-to-one separation of the electric energy meter are sequentially performed, and then the new electric energy meter is replaced. According to the electric energy meter assembly provided by the invention, when a new electric energy meter is installed or the electric energy meter is replaced, the interphase short circuit or the grounding short circuit between the phase line and the zero line cannot occur among a plurality of leads, so that the electric shock risk of operation and maintenance personnel during operation, maintenance and meter replacement is reduced. And a plurality of supplementary more a plurality of wiring terminals one-to-one of piece and electric energy meter are changed, are difficult to cause the problem of phase sequence disorder in the change electric energy meter process, have improved the efficiency of wiring.
Drawings
Fig. 1 is a schematic structural diagram of an electric energy meter provided by an embodiment of the invention;
FIG. 2 is a schematic structural view of an auxiliary refill unit provided in accordance with an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a pressure sensor provided on a connecting rod according to an embodiment of the present invention.
In the figure:
100. a wire;
1. an electric energy meter; 11. an electricity meter body; 12. a terminal; 121. a spring plate; 13. a power indicator light; 14. a display screen; 15. a button portion; 16. a transmission section; 17. a limiting part; 18. a pressure sensor; 19. a trigger;
2. auxiliary replacement parts; 21. a connecting rod; 211. inserting grooves; 2112. an annular groove; 22. an insulating member; 23. a sleeve; 24. a knob.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the embodiments of the present invention, the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides an electric energy meter assembly, as shown in fig. 1 to 3, comprising an electric energy meter 1 and an auxiliary replacing part 2, wherein the electric energy meter 1 comprises a meter body 11 and a plurality of terminals 12 arranged on the meter body 11, each terminal 12 is provided with a spring leaf 121, and each spring leaf 121 is made of a conductive material; the auxiliary replacing parts 2 are provided with a plurality of auxiliary replacing parts 2, the plurality of auxiliary replacing parts 2 correspond to the plurality of wiring terminals 12 one by one, each auxiliary replacing part 2 comprises a connecting rod 21, an insulating part 22 arranged at one end of the connecting rod 21 and a sleeve 23 positioned at the other end of the connecting rod 21, the connecting rod 21 is made of a conductive material, and the insulating part 22 and the sleeve 23 are both made of insulating materials; wire 100 can peg graft on connecting rod 21, and connecting rod 21 can wear to locate wiring end 12 and with wiring end 12 sliding fit, and the outer wall of connecting rod 21 can contact with spring leaf 121 to make wire 100 and spring leaf 121 electricity connect, connecting rod 21 can partly stretch into in the sleeve 23, so that insulating part 22 and spring leaf 121 contact, thereby make supplementary more change 2 uncharged. In the present embodiment, the electric energy meter 1 is exemplified by a three-phase electric meter having A, B, C three phases and two neutral terminals, which are provided with eight terminals 12 in total, and therefore the auxiliary replacement member 2 is also provided with eight.
The electric energy meter subassembly that this embodiment provided, the operation that does not have electricity when newly installing electric energy meter 1, peg graft on connecting rod 21 with wire 100 earlier, then wear to locate electric energy meter 1's wiring terminal 12 with connecting rod 21, and make the spring leaf 121 of wiring terminal 12 can contact with the outer wall of connecting rod 21, the electric current can pass through wire 100, connecting rod 21 and spring leaf 121 transmit to electric energy meter 1, thereby realize the electric connection of wire 100 and electric energy meter 1's wiring terminal 12, be connected electric energy meter 1's a plurality of wiring terminals 12 with supplementary more replacement 2 through above-mentioned step in proper order, accomplish newly installing electric energy meter 1's installation. When electric energy meter 1 broke down and need be changed, make connecting rod 21 drive wire 100 part and set up in sleeve 23, at this moment, insulating part 22 and spring leaf 121 contact, insulating part 22 and sleeve 23 all adopt insulating material to make, thereby make supplementary change 2 whole uncharged, will assist to change 2 and wire 100 and take out from electric energy meter 1's wiring terminal 12 jointly, in proper order with a plurality of supplementary a plurality of wiring terminals 12 one-to-one separation of changing 2 and electric energy meter 1, then change new electric energy meter 1 again. The electric energy meter subassembly that this embodiment provided, when installing new electric energy meter 1 or change electric energy meter 1, the earthing short circuit between alternate short circuit or the phase line zero line can not appear between a plurality of wires 100, has reduced the electric shock risk that fortune dimension personnel fortune dimension changed the table. And a plurality of supplementary more 2 and the electric energy meter 1 a plurality of wiring end 12 one-to-one, be difficult to cause the problem of phase sequence disorder in the change electric energy meter 1 process, improved the efficiency of wiring.
It can be understood that the terminal 12 of the electric energy meter 1 provided in this embodiment is a hollow structure, which ensures that the auxiliary replacing part 2 can be taken out from the terminal 12 of the electric energy meter 1. Preferably, a fixing member may be provided at the terminal 12 of the electric energy meter 1, and the fixing member fixes the connection rod 21 to restrict its movement after the outer wall of the connection rod 21 is brought into contact with the spring piece 121, for example, the fixing member may be a clamp, thereby clamping the connection rod 21 to restrict its movement.
Specifically, as shown in fig. 1, the electric energy meter 1 further includes a power indicator 13 and a display screen 14, which are disposed on the meter body 11, wherein the power indicator 13 is used for displaying whether the meter body 11 is powered on first, and the display screen 14 is used for displaying the power consumption.
Specifically, as shown in fig. 2, an insertion groove 211 is formed on an outer wall of the connection rod 21, the wire 100 can be partially disposed in the insertion groove 211, and the live end of the wire 100 abuts against a groove wall of the insertion groove 211. The connecting rod 21 is made of a conductive material, and the live end of the wire 100 abuts against the wall of the inserting groove 211, so that the transmission of current is ensured. More specifically, the insertion groove 211 is a stepped groove, and the insertion groove 211 is configured as a stepped groove to accommodate the wires 100 of different sizes and different models. In this embodiment, the connecting rod 21 is made of alloy steel, which ensures the structural strength of the connecting rod 21.
Specifically, as shown in fig. 2, the insertion groove 211 is an annular structure, the connection rod 21 is a cylindrical structure, and the axis of the insertion groove 211 and the axis of the connection rod 21 are disposed at an included angle, so that the wire 100 can be disposed at an included angle with the connection rod 21, and in this embodiment, the wire 100 is disposed at 90 ° and perpendicular to the connection rod 21.
Specifically, a clamping member (not shown) is disposed on an inner wall of the insertion groove 211, and the clamping member is used for clamping the wire 100, preventing the wire 100 from shaking in the insertion groove 211, and preventing the wire 100 from being inserted unstably.
Specifically, as shown in fig. 2, an external thread is provided on the outer wall of the connecting rod 21, an internal thread is provided on the sleeve 23, the internal thread and the external thread are in threaded fit, the connecting rod 21 is rotated to enable the connecting rod 21 to extend into the sleeve 23, when the connecting rod 21 is rotated, the wire 100 can be wound on the connecting rod 21, and part of the wire is located between two adjacent threads of the external thread, the connecting rod 21 and the wire 100 are partially screwed into the sleeve 23, so that the live end of the wire 100 is located in the sleeve 23, the sleeve 23 is made of an insulating material, and the electric energy meter 1 is convenient to replace subsequently.
Specifically, as shown in fig. 2, the insulating member 22 is a hollow conical structure, the insulating member 22 has a large end and a small end, the small end faces the sleeve 23 and is connected to the connecting rod 21, and after the connecting rod 21 is rotated, because the small end faces the sleeve 23, the outer wall of the insulating member 22 plays a certain guiding role. When the spring plate 121 abuts against the insulating member 22, the live end of the wire 100 is located in the sleeve 23, so that the auxiliary replacing member 2 is not electrified.
Specifically, as shown in fig. 2 and 3, the auxiliary replacing part 2 further includes a knob 24, the knob 24 is disposed at one end of the connecting rod 21 and partially extends out of the large end of the insulating part 22, the knob 24 is held by a human hand, and the operation and maintenance personnel manually rotate the knob 24 to enable the knob 24 to rotate and drive the connecting rod 21 to rotate, so that the connecting rod 21 partially extends into or extends out of the sleeve 23, and the knob 24 is disposed to facilitate the operation and maintenance personnel to rotate the connecting rod 21. It will be appreciated that the knob 24 is made of an insulating material to prevent electrical shock to the maintenance person. In other embodiments, the knob 24 is disposed at one end of the connecting rod 21 and disposed in the insulating member 22, and the operation and maintenance personnel can rotate the knob 24 by stretching a hand into the insulating member 22, or the operation and maintenance personnel can directly stretch one end of the connecting rod 21 out of the large end of the insulating member 22 without disposing the knob 24, and the operation and maintenance personnel can hold one end of the connecting rod 21 and rotate the connecting rod 21.
Further, as shown in fig. 2 and 3, the electric energy meter 1 includes a limiting member for limiting the rotation of the knob 24. An annular groove 2112 is arranged at the joint of the connecting rod 21 and the knob 24, the limiting piece comprises a button part 15, a transmission part 16 and a limiting part 17, the button part 15 is arranged on the ammeter body 11 and is in sliding fit with the ammeter body 11, the transmission part 16 is used for connecting the button part 15 and the limiting part 17 in a transmission mode, the limiting part 17 of the limiting piece is located in the insulating piece 22, when the button part 15 is pressed down, the transmission part 16 transmits power to the limiting part 17, the limiting part 17 moves leftwards (leftwards as shown in fig. 3), and therefore the limiting part 17 is located at the annular groove 2112, at the moment, the knob 24 is rotated, and the limiting part 17 cannot perform limiting action.
The electric energy meter 1 further comprises a controller, a pressure sensor 18 and a trigger 19, wherein the pressure sensor 18 and the trigger 19 are electrically connected with the controller, the pressure sensor 18 is arranged on the outer wall of the connecting rod 21, when the spring piece 121 is in contact with the outer wall of the connecting rod 21, the pressure sensor 18 bears pressure and transmits a pressure signal to the controller, the controller controls the trigger 19 to move rightwards (rightwards as shown in fig. 3), so that the trigger 19 abuts against the limiting part 17 of the limiting part and pushes the limiting part 17 of the limiting part to move rightwards (rightwards as shown in fig. 3), the transmission part 16 transmits power to the button part 15, the button part 15 resets, at the moment, the knob 24 is rotated, and the limiting part 17 of the limiting part can abut against the knob 24 to limit the rotation of the knob 24.
The embodiment also provides a working process of the electric energy meter assembly:
when the electric energy meter 1 is newly installed, the electric energy meter is in an uncharged operation, the wire 100 is firstly inserted into the connecting rod 21, then the connecting rod 21 is inserted into the wiring terminal 12 of the electric energy meter 1, the spring piece 121 of the wiring terminal 12 can be contacted with the outer wall of the connecting rod 21, and current can be transmitted to the electric energy meter 1 through the wire 100, the connecting rod 21 and the spring piece 121, so that the electric connection between the wire 100 and the wiring terminal 12 of the electric energy meter 1 is realized. The plurality of terminals 12 of the electric energy meter 1 are sequentially connected with the auxiliary replacement member 2 through the above steps, and the installation of the newly installed electric energy meter 1 is completed.
When the electric energy meter 1 breaks down and needs to be replaced, the button part 15 of the limiting part is pressed down first, the limiting part 17 is located at the annular groove 2112 at the moment, the knob 24 is rotated, the other end of the connecting rod 21 can extend into the sleeve 23, the knob 24 is rotated continuously, the spring leaf 121 of the wiring terminal 12 of the electric energy meter 1 is jacked up by the insulating part 22 and is separated from the connecting rod 21, therefore, the power-off effect is achieved, meanwhile, due to the insulating protection effect of the insulating part 22 and the sleeve 23, the whole auxiliary replacing part 2 is in an uncharged state, the whole auxiliary replacing part 2 is taken out of the electric energy meter 1, and all the auxiliary replacing parts 2 of the electric energy meter 1 are taken out according to the method. Then the connecting rod 21 of one auxiliary replacing part 2 is inserted into a new electric energy meter 1, the knob 24 is rotated, the connecting rod 21 is partially screwed out of the sleeve 23, the spring piece 121 of the terminal 12 of the electric energy meter 1 is contacted with the connecting rod 21 to electrify the electric energy meter 1, when the connecting rod 21 is rotated to enable the pressure sensor 18 on the connecting rod 21 to be contacted with the spring piece 121, the controller controls the trigger 19 to push the limiting part 17 of the limiting part, the button part 15 is reset, the knob 24 cannot rotate, a plurality of auxiliary replacing parts 2 are sequentially installed on the plurality of terminals 12 in a one-to-one correspondence mode, and the work of replacing the electric energy meter 1 is completed.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An electrical energy meter assembly, comprising:
the electric energy meter (1) comprises a meter body (11) and a plurality of terminals (12) arranged on the meter body (11), wherein each terminal (12) is provided with a spring piece (121), and each spring piece (121) is made of a conductive material;
the auxiliary replacing parts (2) are arranged in a plurality of numbers, the auxiliary replacing parts (2) correspond to the wiring terminals (12) one by one, each auxiliary replacing part (2) comprises a connecting rod (21), an insulating part (22) arranged at one end of the connecting rod (21) and a sleeve (23) positioned at the other end of the connecting rod (21), the connecting rod (21) is made of a conductive material, and the insulating part (22) and the sleeve (23) are both made of an insulating material;
the lead (100) can be inserted on the connecting rod (21), the connecting rod (21) can penetrate through the wiring terminal (12) and is in sliding fit with the wiring terminal (12), and the outer wall of the connecting rod (21) can be in contact with the spring piece (121) so that the lead (100) is electrically connected with the spring piece (121); the connecting rod (21) can partially extend into the sleeve (23) to bring the insulator (22) into contact with the spring plate (121).
2. The electric energy meter assembly according to claim 1, wherein an insertion groove (211) is formed in an outer wall of the connecting rod (21), the wire (100) can be partially disposed in the insertion groove (211), and an electrified end of the wire (100) abuts against a groove wall of the insertion groove (211).
3. The electric energy meter assembly according to claim 2, characterized in that the plug recess (211) is a stepped groove.
4. The electric energy meter assembly according to claim 2, wherein the insertion groove (211) is of an annular structure, the connecting rod (21) is of a cylindrical structure, and an axis of the insertion groove (211) and an axis of the connecting rod (21) are arranged at an included angle.
5. The electric energy meter assembly according to claim 2, characterized in that the inner wall of the plug recess (211) is provided with a clamping member for clamping the wire (100).
6. The electric energy meter assembly according to claim 1, characterized in that the outer wall of the connecting rod (21) is provided with an external thread, the sleeve (23) is provided with an internal thread, the internal thread and the external thread are in threaded cooperation, and the wire (100) can be wound around the connecting rod (21) and is partially located between two adjacent threads of the external thread.
7. An electric energy meter assembly according to claim 1, characterized in that the insulator (22) is of hollow conical configuration, the insulator (22) having a large end and a small end, the small end facing the sleeve (23) and being connected to the connecting rod (21).
8. The electric energy meter assembly according to claim 7, wherein the auxiliary replacement part (2) further comprises a knob (24), the knob (24) is disposed at one end of the connecting rod (21), the knob (24) is used for being held by a human hand, and the knob (24) can rotate and drive the connecting rod (21) to rotate, so that the connecting rod (21) partially extends into the sleeve (23).
9. The electric energy meter assembly according to claim 8, characterized in that the electric energy meter (1) comprises a limit stop for limiting the rotation of the knob (24).
10. The electric energy meter assembly according to claim 9, wherein the stop is partially located within the insulator (22), the stop being adapted to abut against the knob (24) to limit rotation of the knob (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214693.9A CN114545051A (en) | 2022-03-07 | 2022-03-07 | Electric energy meter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214693.9A CN114545051A (en) | 2022-03-07 | 2022-03-07 | Electric energy meter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114545051A true CN114545051A (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210214693.9A Pending CN114545051A (en) | 2022-03-07 | 2022-03-07 | Electric energy meter assembly |
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| CN (1) | CN114545051A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116626354A (en) * | 2023-03-27 | 2023-08-22 | 佳源科技股份有限公司 | Direct current intelligent electric energy meter |
-
2022
- 2022-03-07 CN CN202210214693.9A patent/CN114545051A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116626354A (en) * | 2023-03-27 | 2023-08-22 | 佳源科技股份有限公司 | Direct current intelligent electric energy meter |
| CN116626354B (en) * | 2023-03-27 | 2023-11-03 | 佳源科技股份有限公司 | Direct current intelligent electric energy meter |
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