CN115494444A - Electric energy meter calibration device - Google Patents
Electric energy meter calibration device Download PDFInfo
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- CN115494444A CN115494444A CN202110678892.0A CN202110678892A CN115494444A CN 115494444 A CN115494444 A CN 115494444A CN 202110678892 A CN202110678892 A CN 202110678892A CN 115494444 A CN115494444 A CN 115494444A
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- 239000000523 sample Substances 0.000 claims abstract description 29
- 238000007689 inspection Methods 0.000 claims description 5
- 238000012795 verification Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000010030 laminating Methods 0.000 description 4
- 230000008094 contradictory effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The application discloses electric energy meter calibration equipment includes: the calibration instrument main body is internally provided with a calibration module; the elastic probe is arranged on the calibrator body and is connected with the calibration module, and the elastic probe is used for abutting against a wiring terminal of the electric energy meter to be tested; and the limiting structure is arranged on the calibrator main body and is used for connecting the electric energy meter calibration device to the electric energy meter to be tested. Through this application, the calibration equipment is more convenient with being connected of electric energy meter, has improved the stability that calibration equipment and electric energy meter are connected simultaneously.
Description
Technical Field
The application relates to the field of electrical equipment, in particular to an electric energy meter calibration device.
Background
With the development of a power grid, the electric energy meter is widely applied and used as an electronic metering product, the electric energy meter is slowly moved due to aging and self faults of the electric energy meter, overcurrent and overvoltage, and some lawless persons have the reason that the electric energy meter is less metered or not metered by tampering with an internal device of the electric energy meter, so that the electric energy meter is subjected to field calibration by adopting the electric energy meter calibration instrument, the electric energy meter and the field calibration instrument are required to be connected by cables during the field calibration, and the traditional wiring mode is that a screw driver is used for loosening screws of terminals in a wiring terminal box arranged outside the electric energy meter and sequentially connecting cables used for the calibration and then screwing the cables, or a wiring clamp is used for directly clamping the cables on external terminals of the electric energy meter. However, the wiring mode often has the phenomena that the contact with the contact terminal is not firm, the disconnection is caused by the tripping of the wiring clamp, the inspection is stopped, and the like, the labor intensity is high, and the working efficiency is low; and when the live-wire operation is carried out on site, the wiring mode is complex in wiring and easy to connect wrongly, an electric spark phenomenon often occurs, potential safety hazards exist, accidents are easy to happen due to operation, and the potential safety hazards are increased.
Disclosure of Invention
Based on the problem of above-mentioned background art, this application provides an electric energy meter calibration equipment, makes calibration equipment more convenient with being connected of electric energy meter, has improved the stability that calibration equipment and electric energy meter are connected simultaneously.
An electric energy meter calibration device comprising:
the calibration instrument main body is internally provided with a calibration module;
the elastic probe is arranged on the calibrator body and is connected with the calibration module, and the elastic probe is used for abutting against a wiring terminal of the electric energy meter to be tested;
and the limiting structure is arranged on the calibrator main body and is used for connecting the electric energy meter calibration device to the electric energy meter to be tested.
Optionally, the limiting structure includes two first fixture blocks, and the two first fixture blocks are arranged on the calibrator main body;
the two first fixture blocks can be respectively inserted into the positioning grooves of the detected electric energy meter, wherein three side walls of the first fixture blocks are respectively attached to the first inner wall of the positioning groove and the two inner walls perpendicular to the first inner wall, and the first inner wall is the inner wall of the positioning groove far away from the wiring terminal.
Optionally, a chamfer is arranged at the lower end of the first clamping block.
Optionally, the limiting structure includes two second fixture blocks, and the two second fixture blocks are arranged on the calibrator main body;
the two second clamping blocks can be respectively inserted into the positioning grooves of the electric energy meter to be detected, wherein three side walls of the first clamping block are respectively attached to the second inner wall of the positioning groove and two inner walls perpendicular to the second inner wall, and the second inner wall is the inner wall of the positioning groove close to the wiring terminal.
Optionally, a chamfer is arranged at the lower end of the second fixture block.
Optionally, the limiting structure includes a limiting block, and the limiting block is disposed on the calibrator main body;
the stopper can inject in the constant head tank, the outer wall of stopper with the inner wall of constant head tank closely laminates.
Optionally, the limit structure includes:
the two first limiting plates are oppositely arranged on the first side surface of the inspection instrument main body;
the two third limiting plates are respectively arranged at the end parts, far away from the calibrator main body, of the first limiting plate;
and the third limiting plate is tightly attached to the side wall part of the slot of the detected electric energy meter.
Optionally, the opposite side surfaces of the two first limiting plates are respectively attached to the electric energy meter to be detected;
the first side surface is attached to the detected electric energy meter.
Optionally, the limiting structure further includes a second limiting plate, and the second limiting plate is connected between the two first limiting plates;
the second limiting plate can be inserted into the top wall part of the slot of the detected electric energy meter.
Optionally, the limiting structure includes:
the two first limiting plates are oppositely arranged on the first side surface of the inspection instrument main body;
the two third limiting plates are respectively arranged at the end parts, far away from the calibrator main body, of the first limiting plate;
the thickness of the third limiting plate is smaller than that of the clamping groove, the third limiting plate is attached to the side wall, close to the wiring terminal, of the clamping groove, the side surfaces, opposite to the first limiting plate, of the first limiting plate are attached to the detected electric energy meter respectively, and the first side surface is attached to the detected electric energy meter.
Optionally, the limiting structure further includes a second limiting plate, and the second limiting plate is connected between the two first limiting plates;
the second limiting plate can be inserted into the top wall part of the slot of the detected electric energy meter.
Optionally, the limiting structure comprises a locking screw;
the check meter main body is provided with a through hole matched with the locking screw rod, and the locking screw rod penetrates through the through hole and then is connected with a threaded hole of the electric energy meter to be detected.
This application effectively utilizes inherent trench structure on the electric energy meter, during the use, at first through limit structure with check gauge main part and the trench structure block of being examined the electric energy meter, the elastic probe corresponds and contradicts with the binding post of being examined on the electric energy meter this moment, through operation check gauge main part at last, makes different elastic probe and the binding post electricity that corresponds be connected, carry out the collection of different signals can.
The elastic probe is adopted to replace a cable or a wiring clamp in the prior art, and the check meter main body is fixed at a set position through the limiting structure, so that compared with the traditional operation mode, the steps of wiring, disconnecting and the like are omitted, the operation is more convenient and faster, and the working efficiency is improved; and every elastic probe corresponds a binding post, and the wiring is difficult to make mistakes, and the mode of contradicting the connection is also more stable.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings required for the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without exceeding the protection scope of the present application.
Fig. 1 is a schematic structural diagram of a three-phase electric energy meter provided by the present application.
Fig. 2 is a schematic overall structure diagram of a verification apparatus according to an embodiment of the present application.
Fig. 3 is a schematic view illustrating the first latch being inserted into the positioning groove.
Fig. 4 is a schematic view illustrating the second latch being inserted into the positioning groove.
Fig. 5 is a schematic overall structure diagram of a verification apparatus according to an embodiment of the present application.
Fig. 6 is a schematic overall structure diagram of a verification apparatus according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of the matching state of the verifying device and the electric energy meter to be verified in fig. 6.
Fig. 8 is a schematic view showing a matching relationship between the limiting structure and the slot in fig. 6.
Fig. 9 is a schematic view showing another fitting relationship between the limiting structure and the slot in fig. 6.
In the figure, 1, a check meter main body; 2. an elastic probe; 3. a first clamping block; 4. a second fixture block; 5. a limiting block; 61. a first limit plate; 62. a second limiting plate; 63. a third limiting plate; 7. locking the screw rod;
100. positioning a groove; 110. a first inner wall; 120. a second inner wall; 200. a card slot; 300. a first side surface; 400. a second side surface.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, not all, of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 2, the electric energy meter calibration apparatus disclosed in the embodiment of the present application includes a calibration instrument main body 1, an elastic probe 2, and a limiting structure.
The calibrator main part 1 is responsible for calibrating the electric energy meter, and a calibration module is arranged in the calibrator main part, and a dial plate, a button and the like for displaying various functional parameters are arranged on the outer shell.
The elastic probe 2 is arranged on the bottom surface of the calibrator body 1, has a telescopic function, and one end of the elastic probe contracts under a pressed state and automatically rebounds and resets under the action of no pressure. One end of the elastic probe 2 is connected with a calibration module inside the calibrator body 1, and the other end of the elastic probe is used for abutting against a wiring terminal on the electric energy meter to be tested.
It should be noted that the elastic probes 2 are provided with a plurality of elastic probes, including a voltage signal probe, a pulse signal probe, a 485 communication signal probe, a pulse signal probe and the like, and the elastic probes 2 replace cables or wiring clips in the prior art, so that when each elastic probe 2 is abutted to a corresponding wiring terminal on the electric energy meter to be tested, the electric connection is completed, and the acquisition of the voltage signal, the pulse signal, the 485 communication signal, the pulse signal and the like can be performed through the calibrator main body 1.
The limiting structure is arranged on the bottom surface of the calibrator body 1 and used for clamping the electric energy meter calibration device on the electric energy meter to be checked and limiting the relative position of the electric energy meter calibration device and the electric energy meter to be checked.
When the electric energy meter calibration device in this application is using, at first through limit structure with 1 block of check gauge main part on being examined the electric energy meter, elastic probe 2 corresponds and contradicts with the binding post of being examined on the electric energy meter this moment, and through operation check gauge main part 1 at last, make different elastic probe 2 be connected with the binding post electricity that corresponds, carry out the collection of different signals can. The elastic probe 2 is adopted to replace a cable or a wiring clamp in the prior art, and the check meter main body 1 is fixed at a set position through a limiting structure, so that compared with the traditional operation mode, the steps of wiring, disconnecting and the like are omitted, the operation is more convenient and faster, and the working efficiency is improved; and every elastic probe 2 corresponds a binding post, and the wiring is difficult to make mistakes, and the mode of contradicting the connection is also more stable.
In order to facilitate understanding of the scheme of the application, the structure of the electric energy meter is described. According to the phase line of the electric energy meter, the electric energy meter is divided into a single-phase electric energy meter and a three-phase electric energy meter.
Referring to fig. 1, a schematic structural diagram of a three-phase electric energy meter is shown. Two sides of a three-phase electric energy meter wiring terminal are respectively provided with a positioning groove 100, and a clamping groove 200 is arranged above the wiring terminal on the electric energy meter. The positioning groove 100 and the clamping groove 200 are both inherent grooves of a three-phase electric energy meter, the cross section of the positioning groove 100 is close to a square, and the clamping groove 200 is arranged along the circumferential direction of the outer surface of the electric energy meter and comprises a top wall part positioned at the top of the electric energy meter and side wall parts extending downwards along two ends of the top wall part respectively.
For the single-phase electric energy meter, the surface of the single-phase electric energy meter is not provided with the clamping groove 200, but two sides of the wiring terminal are also respectively provided with one positioning groove 100, the cross section of each positioning groove 100 is close to a rectangle, and one right angle is a rounded angle.
It should be noted that threaded holes are formed in the single-phase electric energy meter and the three-phase electric energy meter, and the difference is that one threaded hole is formed in the single-phase electric energy meter and located in the middle of the wiring terminal area, and two threaded holes are formed in the three-phase electric energy meter and located on two sides of the wiring terminal respectively. The threaded hole is used for locking the electric energy meter cover and the electric energy meter and is an inherent hole position of the electric energy meter.
As some embodiments of the present application, for a single-phase electric energy meter and a three-phase electric energy meter, the limiting structure can adopt the following two types:
first, referring to fig. 1 and 4, the limiting structure includes two first fixture blocks 3, and the two first fixture blocks 3 are respectively and fixedly disposed at two ends of the calibrator main body 1, and are in one-to-one correspondence with two positioning grooves 100 on the electric energy meter to be tested, and can be respectively inserted into the positioning grooves 100.
Referring to fig. 4, an inner wall of the positioning groove 100 away from the connection terminal of the electric energy meter to be tested is referred to as a first inner wall 110, and when the first fixture block 3 is inserted into the positioning groove 100, three side walls of the first fixture block 3 are respectively attached to the first inner wall 110 and two inner walls perpendicular to the first inner wall 110. One side wall of each of the two first clamping blocks 3 is attached to the first inner wall 110, so that the movement of the calibrator body 1 in the X direction is limited; two first fixture block 3 other both sides wall respectively with the laminating of the two inner walls of constant head tank 100 perpendicular to first inner wall 110, restricted check gauge main part 1 in the removal of Y to, consequently limit structure has restricted the relative position of electric energy meter calibration equipment and the electric energy meter examined, under the very inseparable condition of limit structure and constant head tank 100 laminating, check gauge main part 1 also can be fixed.
Secondly, referring to fig. 3, the limiting structure includes two second fixture blocks 4, and the two second fixture blocks 4 are respectively fixedly disposed at two ends of the calibrator main body 1, and are in one-to-one correspondence with the two positioning grooves 100 on the electric energy meter to be tested, and can be respectively inserted into the positioning grooves 100.
An inner wall of the positioning groove 100 close to the terminal of the electric energy meter to be detected is referred to as a second inner wall 120, and when the second fixture block 4 is inserted into the positioning groove 100, three side walls of the second fixture block 4 are respectively attached to the second inner wall 120 and two inner walls perpendicular to the second inner wall 120. One side wall of each of the two second fixture blocks 4 is attached to the second inner wall 120, so that the movement of the calibrator body 1 in the X direction is limited; the other two side walls of the two second fixture blocks 4 are respectively attached to the two inner walls of the positioning groove 100 perpendicular to the second inner wall 120, so that the movement of the calibrator main body 1 in the Y direction is limited, the limiting structure limits the relative position of the electric energy meter calibrator and the electric energy meter to be calibrated, and the calibrator main body 1 can also be fixed under the condition that the limiting structure is tightly attached to the positioning groove 100.
Referring to fig. 2, alternatively, in order to facilitate the insertion of the first latch 3 into the positioning groove 100, a chamfer is provided at a lower end of the first latch 3 to perform a guiding function.
Also, as an alternative solution of the present application, a chamfer may be provided at the lower end of the second latch 4.
It should be noted that the effective active surfaces of the first latch 3 and the second latch 4 are three planes, so that, alternatively, in some embodiments of the present application, they are U-shaped, and of course, in other possible implementations, the cross section may be rectangular, etc.
Referring to fig. 5, as an optional technical solution of the present application, for a single-phase electric energy meter and a three-phase electric energy meter, the limiting structure may further adopt the following manner:
the limiting structure comprises a limiting block 5, and the limiting block 5 is fixedly arranged on the bottom surface of the calibrator main body 1. The sectional shape of stopper 5 and constant head tank 100 cooperatees, and after stopper 5 injected into constant head tank 100, the outer wall of stopper 5 and the inner wall laminating of constant head tank 100. The number of the limiting blocks 5 can be one or two, and when the number of the limiting blocks 5 is two, the two limiting blocks 5 are positioned at the two ends of the calibrator main body 1 and correspond to the positioning grooves 100 one by one; when the number of the limiting blocks 5 is one, the limiting blocks are located at any end of the calibrator body 1, and the cross section of the positioning groove 100 is rectangular, so that one limiting block 5 can limit the movement of the calibrator body 1 in all directions. Under the very inseparable condition of stopper 5 and constant head tank 100 laminating, check gauge main part 1 also can be fixed.
As an optional technical scheme of this application, to three-phase electric energy meter, because it has draw-in groove 200, limit structure still can adopt following mode:
referring to fig. 6, 7 and 8, the position restricting structure includes two first position restricting plates 61 and two third position restricting plates 63. The two first limiting plates 61 are oppositely arranged on the first side surface 300 of the calibrator body 1 and fixedly connected with the calibrator body 1, and the first limiting plates 61 are flush with a group of side surfaces perpendicular to the first side surface 300; the two third limiting plates 63 are respectively fixedly arranged at the end parts of the first limiting plates 61 far away from the calibrator main body 1 and are located between the two first limiting plates 61. The length of the third limiting plate 63 is greater than the compression amount of the elastic probe 2 in the working state.
When the third limiting plate 63 is inserted into the side wall portion of the card slot 200, it is closely attached to the wall of the card slot 200, and the movement of the check meter body 1 in all directions is limited. In this case, the fitting relationship between the third limiting plate 63 and the card slot 200 is similar to the interference fit in the hole-axis fitting relationship, and there is a pressing force between the third limiting plate 63 and the slot wall of the card slot 200. Optionally, in order to further enhance the stability of the matching between the calibrator main body 1 and the electric energy meter to be checked, the opposite side surfaces of the two first limiting plates 61 are respectively attached to the corresponding parts of the electric energy meter to be checked, and the first side surface 300 is attached to the second side surface 400, so that the first limiting plate 61, the third limiting plate 63 and the first side surface 300 are all attached to the electric energy meter to be checked, the movement of the calibrator main body 1 in each direction is further limited, and the calibrator main body 1 can be fixed.
In another possible implementation manner, referring to fig. 7 and 9, the thickness of the third limiting plate 63 is smaller than that of the card slot 200, the third limiting plate 63 is attached to the slot wall of the card slot 200 close to the connection terminal, meanwhile, the opposite side surfaces of the two first limiting plates 61 are respectively attached to the corresponding portions of the electric energy meter to be tested, the first side surface 300 is attached to the second side surface 400 on the electric energy meter to be tested, and movement of the calibrator main body 1 in all directions can also be limited.
Optionally, on the basis of the above several implementation manners, a second limiting plate 62 is additionally arranged, the second limiting plate 62 is fixedly connected between the two first limiting plates 61, and the second limiting plate 62 and the third limiting plate 63 are integrally formed and used for being inserted into the top wall portion of the clamping groove 200 to realize further matching.
Referring to fig. 7, as an optional technical solution of the present application, the limiting structure includes locking screws 7, and the number of the locking screws 7 is determined according to the number of threaded holes on different types of electric energy meters. A through hole matched with the locking screw 7 is formed in the calibrator body 1, the locking screw 7 penetrates through the through hole and then is connected with a threaded hole in the to-be-tested electric energy meter, and the calibrator body 1 and the to-be-tested electric energy meter are fixed.
It should be understood that, in practical application, the locking screw 7 can be independently adopted to fix the calibrator main body 1, and the locking screw 7 simultaneously plays a role in limiting and fixing. The locking screw 7 can also be used in cooperation with the limiting structure in the embodiment, so that the fixing function is further realized on the basis of realizing the limiting function.
The embodiments of the present application are described in detail above. The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the technical solutions and the core ideas of the present application. Therefore, the person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of protection of the present application. In view of the above, the description should not be taken as limiting the application.
Claims (12)
1. An electric energy meter calibration device, comprising:
the calibration instrument main body is internally provided with a calibration module;
the elastic probe is arranged on the calibrator body and is connected with the calibration module, and the elastic probe is used for abutting against a wiring terminal of the electric energy meter to be tested;
and the limiting structure is arranged on the calibrator main body and is used for connecting the electric energy meter calibration device to the electric energy meter to be tested.
2. The electric energy meter calibration device according to claim 1, wherein the limiting structure comprises two first clamping blocks, and the two first clamping blocks are arranged on the calibration instrument main body;
the two first fixture blocks can be respectively inserted into the positioning grooves of the detected electric energy meter, wherein three side walls of the first fixture blocks are respectively attached to the first inner wall of the positioning groove and the two inner walls perpendicular to the first inner wall, and the first inner wall is the inner wall of the positioning groove far away from the wiring terminal.
3. The electric energy meter verification device according to claim 2, wherein: and a chamfer is arranged at the lower end of the first clamping block.
4. The electric energy meter calibration device according to claim 1, wherein the limiting structure comprises two second clamping blocks, and the two second clamping blocks are arranged on the calibration instrument main body;
the two second clamping blocks can be respectively inserted into the positioning grooves of the electric energy meter to be detected, wherein three side walls of the first clamping block are respectively attached to the second inner wall of the positioning groove and two inner walls perpendicular to the second inner wall, and the second inner wall is the inner wall of the positioning groove close to the wiring terminal.
5. The electric energy meter calibration device according to claim 4, wherein a lower end of the second fixture block is provided with a chamfer.
6. The electric energy meter calibration device according to claim 1, wherein the limiting structure comprises a limiting block, and the limiting block is arranged on the calibration instrument main body;
the stopper can inject in the constant head tank, the outer wall of stopper with the inner wall of constant head tank closely laminates.
7. The electric energy meter calibration device of claim 1, wherein the limit structure comprises:
the two first limiting plates are oppositely arranged on the first side surface of the inspection instrument main body;
the two third limiting plates are respectively arranged at the end parts, far away from the calibrator main body, of the first limiting plate;
and the third limiting plate is tightly attached to the side wall part of the slot of the detected electric energy meter.
8. The electric energy meter calibration device according to claim 7, wherein opposite side surfaces of the two first limiting plates are respectively attached to the checked electric energy meter;
the first side surface is attached to the detected electric energy meter.
9. The electric energy meter calibration device according to claim 7, wherein the limiting structure further comprises a second limiting plate, and the second limiting plate is connected between the two first limiting plates;
the second limiting plate can be inserted into the top wall part of the slot of the detected electric energy meter.
10. The electric energy meter calibration device of claim 1, wherein the limit structure comprises:
the two first limiting plates are oppositely arranged on the first side surface of the inspection instrument main body;
the two third limiting plates are respectively arranged at the end parts, far away from the calibrator main body, of the first limiting plate;
the thickness of the third limiting plate is smaller than that of the clamping groove, the third limiting plate is attached to the side wall, close to the wiring terminal, of the clamping groove, the side surfaces, opposite to the first limiting plate, of the first limiting plate are attached to the detected electric energy meter respectively, and the first side surface is attached to the detected electric energy meter.
11. The electric energy meter calibration device according to claim 10, wherein the limiting structure further comprises a second limiting plate, and the second limiting plate is connected between the two first limiting plates;
the second limiting plate can be inserted into the top wall part of the slot of the detected electric energy meter.
12. The electric energy meter calibration device of any one of claims 1-11, wherein the limit structure comprises a locking screw;
the check meter main body is provided with a through hole matched with the locking screw rod, and the locking screw rod penetrates through the through hole and then is connected with a threaded hole of the electric energy meter to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110678892.0A CN115494444A (en) | 2021-06-18 | 2021-06-18 | Electric energy meter calibration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110678892.0A CN115494444A (en) | 2021-06-18 | 2021-06-18 | Electric energy meter calibration device |
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| CN115494444A true CN115494444A (en) | 2022-12-20 |
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| CN202110678892.0A Pending CN115494444A (en) | 2021-06-18 | 2021-06-18 | Electric energy meter calibration device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203811800U (en) * | 2014-04-15 | 2014-09-03 | 江苏云涌电子科技有限公司 | Pallet for multifunctional single-phase electric energy meter detection |
| US20150121991A1 (en) * | 2013-11-07 | 2015-05-07 | Douglas J. Christiansen | Multi-instrument calibration standard |
| CN105182107A (en) * | 2015-07-29 | 2015-12-23 | 北京煜邦电力技术股份有限公司 | Detection device, system and method |
| CN110346747A (en) * | 2019-08-06 | 2019-10-18 | 海盐新跃电器有限公司 | A kind of single-phase electric energy meter on-site calibration equipment |
| CN216351181U (en) * | 2021-06-18 | 2022-04-19 | 太原市优特奥科电子科技有限公司 | Electric energy meter calibration device |
-
2021
- 2021-06-18 CN CN202110678892.0A patent/CN115494444A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150121991A1 (en) * | 2013-11-07 | 2015-05-07 | Douglas J. Christiansen | Multi-instrument calibration standard |
| CN203811800U (en) * | 2014-04-15 | 2014-09-03 | 江苏云涌电子科技有限公司 | Pallet for multifunctional single-phase electric energy meter detection |
| CN105182107A (en) * | 2015-07-29 | 2015-12-23 | 北京煜邦电力技术股份有限公司 | Detection device, system and method |
| CN110346747A (en) * | 2019-08-06 | 2019-10-18 | 海盐新跃电器有限公司 | A kind of single-phase electric energy meter on-site calibration equipment |
| CN216351181U (en) * | 2021-06-18 | 2022-04-19 | 太原市优特奥科电子科技有限公司 | Electric energy meter calibration device |
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