CN111724977B - Transformer becomes low ground connection subassembly - Google Patents
Transformer becomes low ground connection subassembly Download PDFInfo
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- CN111724977B CN111724977B CN202010577349.7A CN202010577349A CN111724977B CN 111724977 B CN111724977 B CN 111724977B CN 202010577349 A CN202010577349 A CN 202010577349A CN 111724977 B CN111724977 B CN 111724977B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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Abstract
本发明公开一种变压器变低接地组件，包括有接地板主体，接地板主体包括有安装板、夹持板以及设置在安装板与夹持板之间的第一连接板，安装板与变低母线连接，夹持板用于安装接地线，夹持板间隔设置在安装板的下方，第一连接板的上端与安装板连接，第一连接板的下端与夹持板的一端连接，夹持板远离第一连接板的一端凸出设置有挡板，接地线的线夹头夹紧在夹持板位于第一连接板与挡板之间的位置。便于装设接地线，且有效防止接地线的滑落。
The invention discloses a transformer grounding assembly for lowering the voltage, comprising a grounding plate main body, the grounding plate main body includes a mounting plate, a clamping plate and a first connecting plate arranged between the mounting plate and the clamping plate. The mounting plate is connected to the lowering plate. The busbar is connected, and the clamping plate is used to install the ground wire. The clamping plate is arranged below the installation plate at intervals. The upper end of the first connection plate is connected to the installation plate, and the lower end of the first connection plate is connected to one end of the clamping plate. A baffle is protruded from one end of the plate away from the first connecting plate, and the clamp of the grounding wire is clamped at the position where the clamping plate is located between the first connecting plate and the baffle. It is convenient to install the ground wire and effectively prevent the ground wire from slipping.
Description
Technical Field
The invention relates to the technical field of electric power tools, in particular to a transformer low-voltage grounding assembly.
Background
The main transformer is one of the main equipment of transformer substation, needs to overhaul the main transformer main part after main transformer body operation a period of time and maintains. The transformer body needs to be converted from the working state to the maintenance state in the process of maintenance so as to ensure the safety. At present, the main transformer becomes low and is provided with the step-down bus-bar bridge, becomes low bus-bar bridge department and is connected to the step-down switch structure through the step-down wall bushing. When truning into the transformer body to the maintenance state, need install a set of earth connection in step-down generating line bridge department, the earth connection is installed to prior art following two kinds of modes of adoption usually: 1. a straight copper bar is led out from the low-level wall bushing, and the grounding wire is connected with the straight copper bar; 2. the ground line is connected directly to the down conductor of the low surge arrester (i.e. to the connection line between the low surge arrester and the low bus). Because the height that becomes the low generating line is higher, the earth connection adopts above two kinds of mounting methods all to need to install with the help of external instrument (for example staircase), has inconvenient operation not enough, and the earth connection is easy to follow the landing of mounting point.
Disclosure of Invention
The invention aims to: the transformer low-transformer grounding assembly is convenient for installing a grounding wire and effectively prevents the grounding wire from sliding off.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a transformer step-down ground connection subassembly, including the ground plate main part, the ground plate main part is in including mounting panel, grip block and setting the mounting panel with first connecting plate between the grip block, the mounting panel is connected with the step-down generating line, the grip block is used for installing the earth connection, the grip block interval sets up the below of mounting panel, the upper end of first connecting plate with the mounting panel is connected, the lower extreme of first connecting plate with the one end of grip block is connected, the grip block is kept away from the one end protrusion of first connecting plate is provided with the baffle, the fastener head clamp of earth connection is in the grip block is located first connecting plate with position between the baffle.
As a preferable technical solution of the transformer step-down grounding assembly, the mounting plate is detachably connected to the step-down bus bar by a mounting bolt.
As a preferable technical solution of the transformer low-to-ground assembly, the first connection plate is vertically disposed, and the mounting plate is perpendicular to the first connection plate.
As a preferable technical solution of the transformer low-voltage grounding assembly, the lower end of the mounting plate is connected to one end of the first connecting plate through a damping rotating shaft, and the clamping plate can be turned up and down around the damping rotating shaft.
As a preferable technical solution of the transformer low-to-ground assembly, the transformer low-to-ground assembly further includes a driving assembly disposed on the first connection plate, and the driving assembly is configured to drive the clamping plate to turn over, so that the clamping plate is switched between the first state and the second state.
As a preferred technical scheme of transformer step-down grounding assembly, the drive assembly includes driving motor and insulating arc, driving motor sets up on first connecting plate, driving motor's output shaft pass through the second connecting plate with the arc is connected, the arc is located first connecting plate with between the grip block, the one end of arc with the grip block is connected, the other end with first connecting plate interval sets up.
As a preferable technical solution of the transformer low-voltage grounding assembly, a buffer layer is disposed at a position where the first connecting plate faces the arc-shaped plate and is far away from one end of the clamping plate.
As an optimal technical scheme of the transformer step-down grounding assembly, the second connecting plate is connected with the output shaft of the driving motor through a connecting sleeve, the number of the second connecting plates is three, one end of each second connecting plate is connected with the connecting sleeve, and the ends, far away from the connecting sleeve, of the second connecting plates are respectively distributed along the extension direction of the arc-shaped plate at intervals.
As a preferable technical solution of the transformer low-voltage grounding assembly, an insulating housing is wrapped around the outer circumference of the driving motor, the insulating housing is provided with an insulating positioning plate, and the insulating positioning plate is connected with the first connecting plate through a fastening member.
As a preferable technical solution of the transformer-to-low grounding assembly, the output shaft of the driving motor is controlled by a wireless controller.
The invention has the beneficial effects that: because the grip block interval sets up the below at the mounting panel, and the upper end and the lower extreme of first connecting plate are connected with mounting panel and grip block respectively, reduce the height of grip block effectively, the maintainer can be directly on the grip block with the line chuck clamp of earth connection subaerial under the condition that does not need the staircase, conveniently installs the earth connection. After the transformer main body is overhauled, the wire clamp head of the grounding wire is loosened from the clamping plate, and then the grounding wire is separated from the grounding plate main body. Because the staircase does not need to be used in the process of installing the grounding wire, the risk that the maintainers fall from a high place due to the fact that the staircase skids on the ground is avoided in the whole process, and the safety of the maintainers is guaranteed. In addition, the arrangement of the baffle plate can limit the grounding wire between the first connecting plate and the baffle plate, and the wire clamp of the grounding wire is prevented from sliding off from one end, far away from the first connecting plate, of the clamping plate.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a perspective view of a transformer low-to-ground assembly according to an embodiment.
Fig. 2 is a perspective view of a transformer low-to-ground assembly according to another embodiment.
FIG. 3 is a side view of a transformer low to ground assembly according to yet another embodiment.
Fig. 4 is a schematic connection diagram of the connection sleeve, the second connection plate and the arc-shaped plate.
In the figure:
1. a ground plate body; 101. mounting a plate; 102. a first connecting plate; 103. a clamping plate; 104. a baffle plate; 105. a first connection portion; 106. a second connecting portion; 107. a damping rotating shaft; 108. a first mounting hole; 109. a buffer layer; 2. a drive assembly; 201. a drive motor; 202. an insulating positioning plate; 203. a fastener; 204. a second connecting plate; 205. an arc-shaped plate; 206. a connecting sleeve.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; 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 the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other 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.
As shown in fig. 1 to 4, the present invention provides a transformer low-to-ground assembly. The transformer low-voltage grounding assembly comprises a grounding plate body 1, wherein the grounding plate body 1 comprises a mounting plate 101, a clamping plate 103 and a first connecting plate 102 arranged between the mounting plate 101 and the clamping plate 103, the mounting plate 101 is connected with a low-voltage bus, the clamping plate 103 is used for mounting a grounding wire, the clamping plate 103 is arranged below the mounting plate 101 at intervals, the upper end of the first connecting plate 102 is connected with the mounting plate 101, the lower end of the first connecting plate 102 is connected with one end of the clamping plate 103, a baffle plate 104 is arranged at one end, away from the first connecting plate 102, of the clamping plate 103 in a protruding mode, and a wire clamping head of the grounding wire is clamped at a position, between the first connecting plate 102 and the baffle plate 104, of the clamping plate 103.
In the present embodiment, the mounting plate 101 is connected to the step-down bus bar, thereby positioning the position of the entire ground plate body 1. Because the holding plate 103 is arranged below the mounting plate 101 at intervals, and the upper end and the lower end of the first connecting plate 102 are respectively connected with the mounting plate 101 and the holding plate 103, the height of the holding plate 103 is effectively reduced, and a maintainer can directly clamp a wire chuck of a grounding wire on the holding plate 103 on the ground under the condition that an escalator is not needed, so that the grounding wire is convenient to install. After the transformer body is repaired, the wire clamp of the ground wire is loosened from the clamping plate 103, and the ground wire is separated from the ground plate body 1. Because the staircase does not need to be used in the process of installing the grounding wire, the risk that the maintainers fall from a high place due to the fact that the staircase skids on the ground is avoided in the whole process, and the safety of the maintainers is guaranteed. In addition, the baffle plate 104 is arranged to limit the grounding wire between the first connecting plate 102 and the baffle plate 104, and prevent the wire clamp of the grounding wire from sliding off from one end of the clamping plate 103 far away from the first connecting plate 102.
In one embodiment, mounting plate 101 is removably attached to the step-down bus by mounting bolts. Specifically, the mounting plate 101 is provided with a first mounting hole 108 in a penetrating manner, the step-down bus is provided with a second mounting hole, and mounting bolts are screwed in the first mounting hole 108 and the second mounting hole respectively to realize the detachable connection of the mounting plate 101 and the step-down bus, so that the mounting of the ground plate body 1 and the step-down bus is facilitated. In this embodiment, four first mounting holes 108 are provided, the second mounting holes correspond to the first mounting holes 108 one to one, and each first mounting hole 108 is screwed with one mounting bolt.
Specifically, the first connection plate 102 is vertically disposed, and the mounting plate 101 is perpendicular to the first connection plate 102. The mounting plate 101 is parallel to the low bus, which facilitates the connection of the mounting plate 101 to the low bus.
In another embodiment, the mounting plate 101 may be welded to the step-down bus, and the connection manner of the mounting plate 101 to the step-down bus is not particularly limited.
In this embodiment, referring to fig. 2, the lower end of the mounting plate 101 is connected to one end of the first connecting plate 102 via a damping rotation shaft 107, and the clamping plate 103 can be flipped up and down about the damping rotation shaft 107. When the ground wire is required to be clamped on the clamping plate 103, the clamping plate 103 is firstly turned downwards around the damping rotating shaft 107, so that the included angle between the clamping plate 103 and the first connecting plate 102 is 180 degrees, the clamping plate 103 is in a vertical state at the moment, the wire clamping head of the ground wire is clamped behind the clamping plate 103, and then the clamping plate 103 is turned upwards around the damping rotating shaft 107, so that the clamping plate 103 is perpendicular to the first connecting plate 102. The transformer of this kind of structure becomes the earth connection subassembly and can overturn the grip block 103, changes the height of grip block 103 in a flexible way, after the earth connection presss from both sides tightly grip block 103, through the height that upset grip block 103 risees grip block 103, prevents that the height of grip block 103 from crossing excessively at the in-process of normal use transformer body and leading to the user mistake to touch grip block 103 to the danger of taking place to electrocute has been avoided. Further, the mounting plate 101 is connected to the first connecting plate 102 via a damping rotation shaft 107, and the clamping plate 103 can be positioned by the damping action of the damping rotation shaft 107.
Specifically, the end of the first connecting plate 102 connected to the clamping plate 103 has two first connecting portions 105, the two first connecting portions 105 are spaced apart along the width direction of the first connecting plate 102, the end of the clamping plate 103 connected to the first connecting plate 102 has a second connecting portion 106, and the second connecting portion 106 is located between the two first connecting portions 105. The two first connecting portions 105 are provided with first connecting holes, the second connecting portion 106 is provided with second connecting holes corresponding to the first connecting holes, and the damping rotating shaft 107 respectively penetrates through the first connecting holes and the second connecting holes, so that the clamping plate 103 rotates relative to the first connecting plate 102 around the damping rotating shaft 107.
In order to turn the clamping plate 103 over, the transformer low-voltage grounding assembly further comprises a driving assembly 2 arranged on the first connecting plate 102, and the driving assembly 2 is used for driving the clamping plate 103 to turn over, so that the clamping plate 103 is switched between a first state and a second state. In the present embodiment, the first state refers to a state in which the chucking plate 103 is perpendicular to the first connection plate 102, and the second state refers to a state in which the chucking plate 103 is parallel to the first connection plate 102. When the ground wire is required to be clamped on the clamping plate 103, the clamping plate 103 is driven by the driving assembly 2 to turn over to the second state, the clamping plate 103 is parallel to the first connecting plate 102 (namely, the clamping plate 103 is vertical), then the ground wire is clamped on the clamping plate 103, and after the ground wire is clamped on the clamping plate 103, the driving assembly 2 drives the clamping plate 103 to turn over to the first state, so that the clamping plate 103 and the first connecting plate 102 are perpendicular (namely, the clamping plate 103 is horizontal), and the possibility that the ground wire slides on the clamping plate 103 is reduced.
Referring to fig. 3 and 4, the driving assembly 2 includes a driving motor 201 and an insulating arc plate 205, the driving motor 201 is disposed on the first connecting plate 102, an output shaft of the driving motor 201 is connected to the arc plate 205 through a second connecting plate 204, the arc plate 205 is located between the first connecting plate 102 and the clamping plate 103, one end of the arc plate 205 is connected to the clamping plate 103, and the other end is spaced from the first connecting plate 102. Because the second connecting plate 204 is connected with the output shaft, the second connecting plate 204 and the output shaft of the driving motor 201 rotate synchronously, and the driving motor 201 drives the arc-shaped plate 205 to rotate through the second connecting plate 204 in the rotating process, so as to drive the clamping plate 103 to turn over around the damping rotating shaft 107. The end of the arc plate 205 away from the clamping plate 103 is spaced from the first connecting plate 102, so that the possibility of collision between the arc plate 205 and the connecting plate is reduced when the driving motor 201 rotates.
Preferably, a buffer layer 109 is arranged at a position of the first connecting plate 102 opposite to one end of the arc-shaped plate 205 far away from the clamping plate 103. When the arc plate 205 collides with the first connection plate 102, the buffer layer 109 can buffer the collision and prevent the first connection plate 102 and the arc plate 205 from being damaged.
The second connecting plates 204 are connected with the output shaft of the driving motor 201 through a connecting sleeve 206, the number of the second connecting plates 204 is three, one end of each of the three second connecting plates 204 is connected with the connecting sleeve 206, and the three ends of the second connecting plates 204 far away from the connecting sleeve 206 are respectively distributed along the extending direction of the arc-shaped plate 205 at intervals. The arc-shaped plate 205 is connected with the output shaft of the driving motor 201 through the three second connecting plates 204, so that the connection strength between the arc-shaped plate 205 and the output shaft is enhanced, and because the three second connecting plates 204 are distributed at intervals at one ends far away from the connecting sleeve 206 along the extending direction of the arc-shaped plate 205, the balance of the arc-shaped plate 205 is improved, and the arc-shaped plate 205 is prevented from deviating laterally.
The mounting plate 101, the first connecting plate 102, the clamping plate 103, and the baffle plate 104 are all copper plates.
In order to prevent the driving motor 201 and the ground plate main body 1 from conducting electricity with each other, an insulating housing (not shown in the figure) is wrapped on the outer periphery of the driving motor 201, the insulating housing is provided with an insulating positioning plate 202, and the insulating positioning plate 202 is connected with the first connecting plate 102 through a fastener 203. Specifically, the insulation positioning plate 202 is provided with a first fastening hole in a penetrating manner, the first connection plate 102 is provided with a second fastening hole corresponding to the first fastening hole, and the fastening members 203 are respectively screwed in the first fastening hole and the second fastening hole, so that the driving motor 201 is connected with the first connection plate 102. Specifically, the driving motor 201 is located at a non-end position of the first connection plate 102.
In order to facilitate control of the driving motor 201, the output shaft of the driving motor 201 is driven by a remote controller.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (5)
1. A transformer step-down grounding assembly, comprising a grounding plate body, wherein the grounding plate body comprises a mounting plate, a clamping plate and a first connecting plate arranged between the mounting plate and the clamping plate, the mounting plate is connected with a step-down bus, the clamping plate is used for mounting a grounding wire, the clamping plate is arranged below the mounting plate at intervals, the upper end of the first connecting plate is connected with the mounting plate, the lower end of the first connecting plate is connected with one end of the clamping plate, the end of the clamping plate far away from the first connecting plate is convexly provided with a baffle plate, the wire clamping head of the grounding wire is clamped at the position of the clamping plate between the first connecting plate and the baffle plate, the mounting plate is detachably connected with the step-down bus through a mounting bolt, the first connecting plate is vertically arranged, and the mounting plate is perpendicular to the first connecting plate, the lower extreme of mounting panel with the one end of first connecting plate is passed through the damping rotation axis and is connected, the grip block can wind the upset is rotated to the damping, still including setting up drive assembly on the first connecting plate, drive assembly is used for the drive the grip block upset makes the grip block switches over each other at first state and second state, drive assembly includes driving motor and insulating arc, driving motor sets up on the first connecting plate, driving motor's output shaft pass through the second connecting plate with the arc is connected, the arc be located first connecting plate with between the grip block, the one end of arc with the grip block is connected, the other end with first connecting plate interval sets up.
2. The transformer low-transformer grounding assembly according to claim 1, wherein a buffer layer is arranged at a position, opposite to one end of the arc-shaped plate away from the clamping plate, of the first connecting plate.
3. The transformer low-transformer grounding assembly according to claim 1, wherein the second connecting plates are connected with the output shaft of the driving motor through connecting sleeves, the number of the second connecting plates is three, one end of each of the three second connecting plates is connected with the connecting sleeves, and one ends of the three second connecting plates, which are far away from the connecting sleeves, are respectively distributed at intervals along the extending direction of the arc-shaped plate.
4. The transformer low-grounding assembly according to claim 1, wherein an insulating housing is wrapped around the outer circumference of the driving motor, and the insulating housing is provided with an insulating positioning plate connected to the first connecting plate by a fastener.
5. The transformer low grounding assembly of claim 1, wherein the output shaft of the drive motor is controlled by a wireless controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010577349.7A CN111724977B (en) | 2020-06-22 | 2020-06-22 | Transformer becomes low ground connection subassembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010577349.7A CN111724977B (en) | 2020-06-22 | 2020-06-22 | Transformer becomes low ground connection subassembly |
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| Publication Number | Publication Date |
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| CN111724977A CN111724977A (en) | 2020-09-29 |
| CN111724977B true CN111724977B (en) | 2021-06-11 |
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| CN202010577349.7A Active CN111724977B (en) | 2020-06-22 | 2020-06-22 | Transformer becomes low ground connection subassembly |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112186373A (en) * | 2020-10-13 | 2021-01-05 | 广东电网有限责任公司广州供电局 | Become low generating line bridge earth connection and hang joint |
| CN112688090A (en) * | 2020-11-24 | 2021-04-20 | 国网福建省电力有限公司大田县供电公司 | Special grounding hanging device for medium and low voltage side of main transformer |
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| CN202422954U (en) * | 2011-12-13 | 2012-09-05 | 河南省电力公司濮阳供电公司 | 10KV incoming bridge grounding conductor terminal for transformer |
| CN202633532U (en) * | 2012-05-31 | 2012-12-26 | 施耐德东芝换流器欧洲公司 | Connection rod |
| CN207501924U (en) * | 2017-09-29 | 2018-06-15 | 广州市诚铁监理咨询有限公司 | Upright bar tilt detecting device |
| KR102019708B1 (en) * | 2019-03-22 | 2019-09-10 | 유재현 | earth device improved in structure |
| CN110492265A (en) * | 2019-08-23 | 2019-11-22 | 上海宝冶市政工程有限公司 | A kind of earthing clamp |
| CN210668996U (en) * | 2019-11-11 | 2020-06-02 | 苏州宝洪泰电子有限公司 | Power cabinet grounding copper bar |
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2020
- 2020-06-22 CN CN202010577349.7A patent/CN111724977B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202422954U (en) * | 2011-12-13 | 2012-09-05 | 河南省电力公司濮阳供电公司 | 10KV incoming bridge grounding conductor terminal for transformer |
| CN202633532U (en) * | 2012-05-31 | 2012-12-26 | 施耐德东芝换流器欧洲公司 | Connection rod |
| CN207501924U (en) * | 2017-09-29 | 2018-06-15 | 广州市诚铁监理咨询有限公司 | Upright bar tilt detecting device |
| KR102019708B1 (en) * | 2019-03-22 | 2019-09-10 | 유재현 | earth device improved in structure |
| CN110492265A (en) * | 2019-08-23 | 2019-11-22 | 上海宝冶市政工程有限公司 | A kind of earthing clamp |
| CN210668996U (en) * | 2019-11-11 | 2020-06-02 | 苏州宝洪泰电子有限公司 | Power cabinet grounding copper bar |
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| CN111724977A (en) | 2020-09-29 |
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