CN112345995B - Voltage transformer calibration wiring device and use method - Google Patents
Voltage transformer calibration wiring device and use method Download PDFInfo
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- CN112345995B CN112345995B CN202011216192.1A CN202011216192A CN112345995B CN 112345995 B CN112345995 B CN 112345995B CN 202011216192 A CN202011216192 A CN 202011216192A CN 112345995 B CN112345995 B CN 112345995B
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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
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The application provides a voltage transformer examination termination and application method relates to high-voltage transformer examination technical field, and the application provides a voltage transformer examination termination, including the backup pad, the bottom of backup pad is equipped with the supporting leg, the bottom of backup pad is equipped with the wiring subassembly, be equipped with connecting portion on the wiring subassembly, the vertical setting of connecting portion, the upper end of wiring subassembly is equipped with the deflector, be equipped with telescopic machanism in the backup pad, telescopic machanism's output links to each other with the deflector, telescopic machanism drive connection post moves in vertical direction. The application provides a voltage transformer examination termination need not artifical wiring, has improved the security of work, and application scope is wide.
Description
Technical Field
The application relates to the technical field of high-voltage transformer verification, in particular to a voltage transformer verification wiring device and a using method.
Background
The high-voltage transformer is suitable for converting large voltage into small voltage or converting large current into small current in a 1kv to 220kv power system so as to be convenient for measurement, protection and use.
The verification of the high-voltage transformer is a relatively dangerous work in the current verification work, and the improvement of the safety factor of the work of high-voltage transformer verification personnel is a main aspect that the current team and team need continuous improvement.
Present high-voltage transformer examines and determine that the wiring is manual wiring, as shown in fig. 1 and fig. 2, high-voltage transformer's top is equipped with two primary line terminals 19, one side of high-voltage transformer is equipped with two secondary line terminals 20, in the actual detection process, check out test set presss from both sides and the power cord is connected with primary line terminal and secondary line terminal electricity respectively through the duckbilled, primary line terminal and secondary line terminal all adopt the hexagon nut structure, the duckbilled presss from both sides with once little with the area of contact of secondary line terminal, cause bad connection easily, the effect is examined and determine in the influence, need artifical manual carrying out fixed connection with the duckbilled clamp with the terminal simultaneously, there is the potential safety hazard.
Disclosure of Invention
To the problems in the prior art, the application provides a voltage transformer verification wiring device and a using method, manual wiring is not needed, automatic wiring is adopted, and the safety of work is improved.
The application provides a voltage transformer verification termination, the camera includes a supporting plate, the bottom of backup pad is equipped with the supporting leg, the bottom of backup pad is equipped with the wiring subassembly, be equipped with connecting portion on the wiring subassembly, the vertical setting of connecting portion, the upper end of wiring subassembly is equipped with the deflector, be equipped with telescopic machanism in the backup pad, telescopic machanism's output links to each other with the deflector, telescopic machanism drive spliced pole moves in vertical direction.
Further, the wiring assembly comprises a first wiring assembly and a second wiring assembly, and the upper end of the first wiring assembly and the upper end of the second wiring assembly are connected with the guide plate respectively.
Further, first wiring subassembly includes first connecting plate, and connecting portion include first spliced pole and first connector, and the quantity of first spliced pole is two, and first connecting plate passes through the connecting piece and links to each other with the backup pad, is equipped with first rectangular hole on the first connecting plate, and first rectangular hole extends along the length direction of first connecting plate, and the upper end of first spliced pole is equipped with first slider, first slider and first rectangular hole sliding connection, and first connector sets up the lower extreme at first spliced pole.
Further, first wiring subassembly includes first connecting plate, and connecting portion include first spliced pole and first connector, and the quantity of first spliced pole is two, and first connecting plate passes through the connecting piece and links to each other with the backup pad, and the bottom of first connecting plate is equipped with rectangular groove, and the upper end of first spliced pole is equipped with first slider, first slider and rectangular groove sliding connection, and first connector sets up the lower extreme at first spliced pole.
Further, first connector includes the sleeve, and telescopic upper end is equipped with the current conducting plate, and the current conducting plate links to each other with first connecting post, and telescopic inside is equipped with a plurality of telescopic needles, links to each other between a plurality of telescopic needles and connects to the wire, telescopic needle includes the elastic component and leads the electrical pillar, and the upper end of leading the electrical pillar links to each other with the current conducting plate through the elastic component.
Further, when the elastic member is in an unstressed state, the sum of the lengths of the elastic member and the conductive column is less than or equal to the height of the sleeve.
Further, the second wiring subassembly includes the second connecting plate, and connecting portion still include second spliced pole and second connector, the second connector adopts electrically conductive platelike structure, and the quantity of second spliced pole is two, and the second connecting plate passes through the connecting piece and links to each other with the backup pad, is equipped with the rectangular hole of second on the second connecting plate, and the upper end of second spliced pole is equipped with the second slider, second slider and the rectangular hole sliding connection of second, and the second connector setting is at the lower extreme of second spliced pole, the length extending direction of second connecting plate perpendicular to the length extending direction of first connecting plate.
Furthermore, the telescopic mechanism adopts one of a cylinder, a telescopic rod or a hydraulic cylinder.
Furthermore, the bottom of the supporting leg is provided with a universal wheel, and the universal wheel is provided with a braking part.
The use method of the voltage transformer verification wiring device comprises the following steps:
the method comprises the following steps: moving the support plate, and pushing the voltage transformer calibration wiring device to the upper part of the voltage transformer to be connected;
step two: sliding the first sliding block, and respectively moving the two first connecting heads to the vertical upper parts of the two secondary wire wiring terminals on the voltage transformer;
step three: sliding a second sliding block, and respectively moving the two second connectors to be vertically above the two primary wire binding posts on the voltage transformer;
step four: starting the telescopic mechanism, driving the connecting plate to move downwards by the telescopic mechanism, so that the first connector is inserted into the secondary wire binding post, and the second connector is contacted with the primary connecting post;
step five: and starting the verification equipment to start verification.
The beneficial effect of this application lies in:
1. the telescopic mechanism drives the connecting column to move in the vertical direction, so that the telescopic mechanism can adapt to voltage transformers with different heights, manual wiring is not needed, and the working safety is improved.
2. When the sleeve cup jointed on the secondary line terminal, the bottom face of the telescopic needle contacted with the upper end face of the secondary line terminal, the side face of the telescopic needle contacted with the side face of the secondary line terminal, and a plurality of telescopic needles wrapped on the outer side face of the secondary line terminal, thereby increasing the contact area of the first connector and the secondary line terminal and improving the connection effect.
3. First slider and first rectangular hole sliding connection, second slider and second rectangular hole sliding connection can be convenient for adjust two first spliced poles, and the distance between two second spliced poles, can be convenient for adjust the distance between two first terminals, can adapt to the voltage transformer of different models.
4. The bottom of backup pad is equipped with the supporting leg, and the supporting leg bottom is equipped with the universal wheel, and the device of being convenient for removes.
In addition, the design principle of the application is reliable, the structure is simple, and the application prospect is very wide.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic front view of a voltage transformer in the prior art.
Fig. 2 is a schematic top view of a voltage transformer in the prior art.
Fig. 3 is a schematic front view of a voltage transformer verification wiring device according to an embodiment of the present application.
FIG. 4 is a schematic front view of a wiring assembly according to an embodiment of the present application.
FIG. 5 is a side view of a wiring assembly according to one embodiment of the present application.
FIG. 6 is a schematic top view of a wiring assembly according to one embodiment of the present application.
FIG. 7 is a schematic view of the first joint when the elastic member is not under force according to one embodiment of the present disclosure.
FIG. 8 is a schematic view of the first joint when the elastic member contracts in one embodiment of the present application.
Fig. 9 is a schematic bottom view of the first connector and the secondary wire terminal in one embodiment of the present application.
Fig. 10 is a schematic structural diagram of a state of the voltage transformer verification wiring device when the voltage transformer is not connected with the voltage transformer in one embodiment of the application.
Fig. 11 is a schematic structural diagram of a state when the voltage transformer verification wiring device is connected with a voltage transformer in one embodiment of the application.
In the figure, 1, a supporting plate, 2, a supporting leg, 3, a guide plate, 4, a first connecting plate, 5, a first connecting column, 6, a first strip hole, 7, a first sliding block, 8, a sleeve, 9, a conductive plate, 10, an elastic part, 11, a conductive column, 12, a second connecting plate, 13, a second connecting column, 14, a second connector, 15, a second strip hole, 16, a second sliding block, 17, a telescopic mechanism, 18, a universal wheel, 19, a primary wiring terminal, 20, a secondary wiring terminal, 21, a connecting piece, 22 and a lead.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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.
The following explains key terms appearing in the present application.
As shown in FIG. 3, the voltage transformer examination termination that this application provided mainly is applied to 10KV voltage transformer, including backup pad 1, the setting of backup pad 1 level, the bottom four corners of backup pad 1 is equipped with supporting leg 2 respectively, for the ease of removing, the bottom of supporting leg 2 is equipped with universal wheel 18, is equipped with braking part on the universal wheel 18, and one side of backup pad 1 is provided with the handle.
As shown in fig. 4-6, the bottom of the supporting plate 1 is provided with a wiring assembly, the wiring assembly is provided with a connecting portion, the connecting portion is vertically arranged, the upper end of the wiring assembly is provided with a guide plate 3, the guide plate 3 is horizontally arranged, and the supporting plate 1 is provided with a telescopic mechanism 17. The output shaft of cylinder links to each other with deflector 3, and cylinder drive deflector 3 and spliced pole reciprocating motion in vertical direction can adapt to not the not voltage transformer of co-altitude.
The wiring subassembly includes first wiring subassembly and second wiring subassembly, and the upper end of first wiring subassembly and the upper end of second wiring subassembly link to each other with deflector 3 respectively.
As shown in fig. 4-6, the first wiring assembly includes a first connecting plate 4, the first connecting plate 4 is a strip plate, the first connecting plate 4 is horizontally disposed in parallel with the supporting plate 1, the connecting portion includes a first connecting column 5 and a first connecting head, the number of the first connecting column 5 is two, and the two connecting columns respectively correspond to two secondary wiring terminals 19 on the voltage transformer. First spliced pole 5 is perpendicular to the vertical setting of first spliced pole 4, and the both ends of first spliced pole 4 link to each other through connecting piece 21 and the bottom of backup pad 1 respectively, are equipped with first rectangular hole 66 on the first spliced pole 4, and first rectangular hole 66 is the through-hole, and in this embodiment, first rectangular hole 66 extends along the length direction of first spliced pole 4, and the upper end of first spliced pole 5 is equipped with first slider 7, and first slider 7 and first rectangular hole 66 sliding connection, first connector setting are at the lower extreme of first spliced pole 5. First slider 7 and first rectangular hole 66 sliding connection, the distance between two first terminals of adjustment can be convenient for, can adapt to the voltage transformer of different models.
In other embodiments, the bottom of the first connecting plate 4 is provided with a long groove, the long groove is a T-shaped groove, the upper end of the first connecting column 5 is provided with a first slider 7, the first slider 7 is a T-shaped slider matched with the T-shaped groove, the first slider 7 is slidably connected with the long groove, and the first connecting head is arranged at the lower end of the first connecting column 5.
As shown in fig. 7 and 8, the first connector comprises a sleeve 8, and the diameter of the sleeve 8 is larger than the outer diameter of the last primary wire terminal 19 of the voltage transformer. The upper end of sleeve 8 is equipped with current conducting plate 9, and current conducting plate 9 has the direction function, and current conducting plate 9 links to each other with first spliced pole 5, and the inside of sleeve 8 is equipped with a plurality of telescopic needles, connects and is connected to wire 22 through soldering tin between a plurality of telescopic needles, telescopic needle includes elastic component 10 and leads electrical pillar 11, and the upper end of leading electrical pillar 11 passes through elastic component 10 and links to each other with current conducting plate 9, and the lower extreme of leading electrical pillar 11 is the free end, each telescopic needle independent movement. In this embodiment, the elastic member 10 is a spring, the upper end of the spring is connected to the conductive plate 9, and the lower end of the spring is connected to the conductive post 11.
In this embodiment, when the elastic element 10 is in an unstressed state, the sum of the lengths of the elastic element 10 and the conductive pillar 11 is equal to the height of the sleeve 8, in other embodiments, the sum of the lengths of the elastic element 10 and the conductive pillar 11 may also be smaller than the height of the sleeve 8, and the bottom end of the conductive pillar 11 is immersed in the sleeve 8.
As shown in fig. 9, when first connector links to each other with voltage transformer's secondary line terminal 19, in the practical work process, when pressing down current conducting plate 9, when sleeve 8 cup joints on secondary line terminal 19, the bottom face of extension needle contacts with secondary line terminal 19's up end, the side of extension needle contacts with secondary line terminal 19's side, a plurality of flex needle parcel is on secondary line terminal 19's lateral surface, the spring receives secondary line terminal 19's extrusion upward movement, make sleeve 8 cover the periphery at secondary line terminal 19 completely, the area of contact of first connector with secondary line terminal 19 has been increased, the connection effect has been improved.
The second wiring subassembly includes second connecting plate 12, and connecting portion still include second spliced pole 13 and second connector 14, and the quantity of second spliced pole 13 is two, second connector 14 adopts square conductive metal plate structure, and two first connectors correspond two primary line terminals 19 on the voltage transformer respectively, and telescopic machanism 17 drive second spliced pole 13 downstream for the second spliced pole is directly pressed on the primary line terminal.
The right end of the second connecting plate 12 is connected with the bottom of the supporting plate 1 through a connecting piece 21, and the left end of the second connecting plate 12 is connected with the first connecting plate 4. The second connecting plate 12 is provided with a second long hole 15, the upper end of the second connecting column 13 is provided with a second slider 16, the second slider 16 is connected with the second long hole 15 in a sliding manner, the second connector 14 is arranged at the lower end of the second connecting column 13, the length extending direction of the second connecting plate 12 is perpendicular to that of the first connecting plate 4, and the first connecting plate 4 and the second connecting plate 12 are distributed in a T shape.
The second slider 16 is connected with the second strip hole 15 in a sliding mode, so that the distance between the two second binding posts can be conveniently adjusted, and the voltage transformer can adapt to voltage transformers of different models.
As shown in fig. 10-11, the present application further provides a method for using the connection device for calibrating a voltage transformer, comprising the following steps:
the method comprises the following steps: moving the support plate, and pushing the voltage transformer calibration wiring device to the upper part of the voltage transformer to be connected;
step two: sliding the first sliding block, and respectively moving the two first connecting heads to be vertically above the two secondary wire binding posts on the voltage transformer;
step three: sliding a second sliding block, and respectively moving the two second connectors to be vertically above the two primary wire binding posts on the voltage transformer;
step four: starting the telescopic mechanism, driving the connecting plate to move downwards by the telescopic mechanism, so that the first connector is inserted into the secondary wire binding post, and the second connector is contacted with the primary connecting post;
step five: and starting the verification equipment to start verification.
The application provides a voltage transformer calibration wiring device, a telescopic mechanism drives a connecting column to move in the vertical direction, the device can adapt to voltage transformers with different heights, manual wiring is not needed, and the working safety is improved; when the sleeve is sleeved on the secondary wire binding post, the bottom end face of the telescopic needle is contacted with the upper end face of the secondary wire binding post, the side face of the telescopic needle is contacted with the side face of the secondary wire binding post, and the plurality of telescopic needles are wrapped on the outer side face of the secondary wire binding post, so that the contact area of the first connector and the secondary wire binding post is increased, and the connection effect is improved; the bottom of the supporting plate is provided with supporting legs which are convenient to move; first slider and first rectangular hole sliding connection, second slider and second rectangular hole sliding connection can be convenient for adjust two first spliced poles, and the distance between two second spliced poles, can be convenient for adjust the distance between two first terminals, can adapt to the voltage transformer of different models.
Although the present application has been described in detail with reference to the accompanying drawings in conjunction with the preferred embodiments, the present application is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present application by those skilled in the art without departing from the spirit and scope of the present application, and these modifications or substitutions should be within the scope of the present application/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure and the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a voltage transformer examination termination which characterized in that: the wire connecting device comprises a supporting plate (1), wherein supporting legs (2) are arranged at the bottom of the supporting plate (1), a wire connecting assembly is arranged at the bottom of the supporting plate (1), a connecting part is arranged on the wire connecting assembly, the connecting part is vertically arranged, a guide plate (3) is arranged at the upper end of the wire connecting assembly, a telescopic mechanism (17) is arranged on the supporting plate (1), the output end of the telescopic mechanism is connected with the guide plate (3), and a connecting column is driven by the telescopic mechanism to move in the vertical direction; the wiring assembly comprises a first wiring assembly and a second wiring assembly, and the upper end of the first wiring assembly and the upper end of the second wiring assembly are respectively connected with the guide plate (3); the first wiring assembly comprises a first connecting plate (4), the connecting part comprises a first connecting column (5) and a first connecting head, the number of the first connecting column (5) is two, the first connecting plate (4) is connected with the guide plate (3) through a connecting piece (21), a first strip hole (6) is formed in the first connecting plate (4), the first strip hole (6) extends along the length direction of the first connecting plate (4), a first sliding block (7) is arranged at the upper end of the first connecting column (5), the first sliding block (7) is connected with the first strip hole (6) in a sliding mode, and the first connecting head is arranged at the lower end of the first connecting column (5); the second wiring subassembly includes second connecting plate (12), and connecting portion still include second spliced pole (13) and second connector (14), second connector (14) adopt electrically conductive platelike structure, and the quantity of second spliced pole (13) is two, and second connecting plate (12) pass through connecting piece (21) and link to each other with deflector (3), are equipped with second rectangular hole (15) on second connecting plate (12), and the upper end of second spliced pole (13) is equipped with second slider (16), second slider (16) and second rectangular hole (15) sliding connection, and second connector (14) set up the lower extreme at second spliced pole (13), the length extending direction of second connecting plate (12) is perpendicular to the length extending direction of first connecting plate (4).
2. The voltage transformer verification wiring device of claim 1, wherein: first wiring subassembly includes first connecting plate (4), and connecting portion include first spliced pole (5) and first connector, and the quantity of first spliced pole (5) is two, and first connecting plate (4) link to each other with backup pad (1) through connecting piece (21), and the bottom of first connecting plate (4) is equipped with rectangular groove, and the upper end of first spliced pole (5) is equipped with first slider (7), first slider (7) and rectangular groove sliding connection, and first connector sets up the lower extreme in first spliced pole (5).
3. The voltage transformer verification wiring device according to any one of claims 1 or 2, wherein: first connector includes sleeve (8), and the upper end of sleeve (8) is equipped with current conducting plate (9), and current conducting plate (9) link to each other with first connecting column (5), and the inside of sleeve (8) is equipped with a plurality of telescopic needle, links to each other between a plurality of telescopic needle and connects to wire (22), telescopic needle includes elastic component (10) and leads electrical pillar (11), and the upper end of leading electrical pillar (11) passes through elastic component (10) and links to each other with current conducting plate (9).
4. The voltage transformer verification wiring device of claim 3, wherein: when the elastic piece (10) is in an unstressed state, the sum of the lengths of the elastic piece (10) and the conductive column (11) is smaller than or equal to the height of the sleeve (8).
5. The voltage transformer verification wiring device of claim 1, wherein: the telescopic mechanism (17) adopts one of an air cylinder, a telescopic rod or a hydraulic cylinder.
6. The voltage transformer verification wiring device of claim 1, wherein: the bottom of the supporting leg (2) is provided with a universal wheel (18), and the universal wheel (18) is provided with a braking part.
7. The method of using the voltage transformer certification wiring device according to any one of claims 1 to 6, comprising the steps of:
the method comprises the following steps: moving the support plate, and pushing the voltage transformer calibration wiring device to the upper part of the voltage transformer to be connected;
step two: sliding the first sliding block, and respectively moving the two first connecting heads to be vertically above the two secondary wire binding posts on the voltage transformer;
step three: sliding a second sliding block, and respectively moving the two second connectors to the positions vertically above the two primary wire binding posts on the voltage transformer;
step four: starting the telescopic mechanism, driving the connecting plate to move downwards by the telescopic mechanism, so that the first connector is inserted into the secondary wire binding post, and the second connector is contacted with the primary connecting post;
step five: and starting the verification equipment to start verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216192.1A CN112345995B (en) | 2020-11-04 | 2020-11-04 | Voltage transformer calibration wiring device and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216192.1A CN112345995B (en) | 2020-11-04 | 2020-11-04 | Voltage transformer calibration wiring device and use method |
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| CN112345995A CN112345995A (en) | 2021-02-09 |
| CN112345995B true CN112345995B (en) | 2022-12-13 |
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| CN113567711B (en) * | 2021-06-16 | 2024-04-05 | 国网河北省电力有限公司灵寿县供电分公司 | Connection fixture for current transformer test in switch cabinet |
| CN114002637B (en) * | 2021-10-19 | 2023-08-18 | 国网山东省电力公司营销服务中心(计量中心) | High-voltage detection auxiliary device of voltage transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201698015U (en) * | 2010-06-13 | 2011-01-05 | 栾川县电业局 | Rapid wiring device for detecting current transformer |
| CN102411112B (en) * | 2011-08-02 | 2013-07-31 | 长沙威胜信息技术有限公司 | Method and circuit for detecting secondary side wiring state of primary metering CT (Computed Tomography) outside terminal |
| CN103728583B (en) * | 2014-01-06 | 2015-09-02 | 国家电网公司 | With the mutual inductor automation calibrating system of logistics system seamless link |
| CN106707219B (en) * | 2017-01-22 | 2021-03-19 | 国网山东省电力公司潍坊供电公司 | High-voltage current transformer verification wiring device |
| CN107092003B (en) * | 2017-06-09 | 2020-09-08 | 国网上海市电力公司 | Automatic detection system for voltage transformer |
| CN207502694U (en) * | 2017-11-30 | 2018-06-15 | 宁德新能源科技有限公司 | For the internal resistance hop value test device of battery |
| CN210572701U (en) * | 2019-05-29 | 2020-05-19 | 福建省供电服务有限责任公司 | Meter cover for quickly wiring during verification of intelligent electric energy meter accessed through mutual inductor |
| CN110261807A (en) * | 2019-06-06 | 2019-09-20 | 广州供电局有限公司 | Mutual inductor detection system, mutual inductor detection method and device |
| CN110806530A (en) * | 2019-12-17 | 2020-02-18 | 北京好运达智创科技有限公司 | Insulation detection device and method for rail plate reinforcement framework |
| CN112051414A (en) * | 2020-09-09 | 2020-12-08 | 国网电力科学研究院武汉南瑞有限责任公司 | Wiring mechanism of insulating and voltage-resisting platform |
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