CN114464436A - Aluminum rod type series-parallel connection structure of dry current transformer - Google Patents
Aluminum rod type series-parallel connection structure of dry current transformer Download PDFInfo
- Publication number
- CN114464436A CN114464436A CN202011243862.9A CN202011243862A CN114464436A CN 114464436 A CN114464436 A CN 114464436A CN 202011243862 A CN202011243862 A CN 202011243862A CN 114464436 A CN114464436 A CN 114464436A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- connecting plate
- plate
- aluminum
- base body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 51
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- 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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- 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
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention relates to the field of current transformers, in particular to an aluminum rod type series-parallel connection structure of a dry type current transformer, wherein a primary conductor comprises an aluminum pipe and an aluminum rod, a P1 conducting rod comprises a first connecting part, a first sleeve and a first connecting plate, the first connecting part is in an inverted L shape, a horizontal section is fixedly arranged on a mounting base body through a first fixing component, the lower end of a vertical section is fixedly connected with the first sleeve, the other side of the first sleeve is provided with the first connecting plate, and a C1 connecting plate is arranged on the upper side of the first connecting plate and connected with the first connecting plate through a first series-parallel connection plate; the P2 conducting rod comprises a second connecting part, a second sleeve and a second connecting plate, the second connecting part is fixedly arranged on the mounting base body through a second fixing assembly and connected with the second sleeve, the second connecting plate is arranged on the other side of the second sleeve, and the C2 connecting plate is arranged on the lower side of the second connecting plate and connected with the second connecting plate through a second series-parallel plate. The invention has the advantages of further improved structural stability and insulation performance.
Description
Technical Field
The invention relates to the field of current transformers, in particular to an aluminum rod type series-parallel connection structure of a dry type current transformer.
Background
The dry type current transformer is a transformer with good safety, small pollution and wide application, and along with the technical development, the dry type current transformer is developed into a multi-transformation ratio structure from a single-transformation ratio structure, so that the requirements of customers can be fully met, wherein the design of a primary series-parallel structure of the dry type current transformer is very critical. The primary conductor of the dry type current transformer mainly comprises a multi-aluminum-bar structure and an aluminum bar structure, wherein the multi-aluminum-bar structure bears a smaller thermal stability current ratio, and a stainless steel pipe is required to be additionally arranged outside the aluminum bar for supporting so as to meet a certain tensile force, so that the structure is more complex, and the product assembly is relatively difficult. The aluminum bar structure can increase a section to meet the requirement of a user on heat stable current, and has a relatively simple structure and convenient assembly. However, the primary series-parallel structure of the existing dry-type current transformer is not reasonable enough in design, for example, chinese patent invention with an authorization publication number of CN2922084Y and a name of multi-current-ratio, high-precision, organic composite insulation dry-type high-voltage current transformer discloses a series-parallel structure with an aluminum rod-type primary conductor, each terminal board is directly welded on an aluminum rod or an aluminum pipe, and the structural stability and the insulation performance are all to be improved.
Disclosure of Invention
The invention aims to provide an aluminum rod type series-parallel connection structure of a dry type current transformer, which further improves the structural stability and the insulating property.
The purpose of the invention is realized by the following technical scheme:
an aluminum rod type series-parallel connection structure of a dry type current transformer comprises a primary conductor, a mounting base body, a P1 conductive rod, a P2 conductive rod, a C1 connecting plate and a C2 connecting plate, wherein the P1 conductive rod, the P2 conductive rod, the C1 connecting plate and the C2 connecting plate are arranged in the mounting base body;
the P1 conducting rod comprises a first connecting part, a first sleeve and a first connecting plate, wherein the first connecting part is inverted L-shaped, the horizontal section of the upper side of the first connecting part is fixedly arranged on the mounting base body through a first fixing assembly, the horizontal section extends out of the mounting base body and is connected with a P1 terminal board, the lower end of the vertical section of the first connecting part is fixedly connected with the first sleeve, the first sleeve is sleeved on an aluminum pipe of the P1 connecting end of the primary conductor, one side, away from the first connecting part, of the first sleeve is provided with the first connecting plate, the C1 connecting plate is arranged on the upper side of the first connecting plate, the outer end of the C1 connecting plate is provided with a third sleeve arranged on an aluminum rod of the P1 connecting end of the primary conductor, and the C1 connecting plate is connected with the first connecting plate on the lower side through a first series-parallel plate;
the P2 conducting rod comprises a second connecting part, a second sleeve and a second connecting plate, the second connecting part is horizontally arranged and fixedly arranged on the mounting seat body through a second fixing component, one end of the second connecting part extends out of the mounting seat body and is connected with a P2 terminal board, the other end of the second connecting part is connected with the second sleeve, the second sleeve is sleeved on an aluminum rod of a P2 connecting end of the primary conductor, the second connecting plate is arranged on one side, away from the second connecting part, of the second sleeve, the C2 connecting plate is arranged on the lower side of the second connecting plate, a fourth sleeve is arranged at the outer end of the C2 connecting plate and is sleeved on an aluminum pipe of a P2 connecting end of the primary conductor, and the C2 connecting plate is connected with the second connecting plate on the upper side through a second series-parallel plate.
The first fixing assembly comprises a first nut and a positioning sleeve, the first nut and the positioning sleeve are sleeved on the horizontal section of the first connecting portion, the positioning sleeve is arranged in a through hole in the mounting base body through which the horizontal section of the first connecting portion penetrates, and the first nut and the vertical section of the first connecting portion are arranged on two sides of the positioning sleeve.
The second fixing component comprises a second nut and a limiting plate, wherein the second nut is sleeved on the second connecting portion, the limiting plate is fixedly arranged on the second connecting portion, and the second nut and the limiting plate are respectively arranged on the inner side and the outer side of the mounting base body.
And insulating sleeves are arranged between the third sleeve and the first sleeve and between the second sleeve and the fourth sleeve, each insulating sleeve comprises an isolation section and an insertion section, and the insertion sections are inserted into the aluminum tubes.
The installation pedestal comprises a shielding cover, an insulating bottom plate and voltage-sharing covers, the two voltage-sharing covers are fixedly arranged at the lower sides of the two ends of the insulating bottom plate respectively, the shielding cover is arranged at the upper side of the insulating bottom plate, and the two ends of a primary conductor pass through the voltage-sharing covers on the corresponding sides respectively and then the insulating bottom plate enters the installation pedestal.
The invention has the advantages and positive effects that:
1. the P1 conducting rod and the C2 connecting plate are connected with the aluminum pipe in a sleeved mode, the P2 conducting rod and the C1 connecting plate are connected with the aluminum rod in a sleeved mode, installation is convenient, in addition, the P1 conducting rod and the P2 conducting rod are fixedly installed on the installation base body through the fixing assemblies respectively, and the structure is firmer and more stable.
2. The insulating sleeve of the invention is partially inserted into the aluminum pipe, thereby prolonging the insulating distance and improving the insulating property.
Drawings
Figure 1 is a schematic structural view of the present invention,
figure 2 is a schematic view of the primary conductor of figure 1,
figure 3 is a view a-a of figure 2,
figure 4 is a schematic view of the internal structure of the mounting base in figure 1,
figure 5 is a partial enlarged view of the side P1 in figure 4,
fig. 6 is a partial enlarged view of the side P2 in fig. 4.
The connector comprises a mounting base 1, a voltage-sharing cover 101, an insulating base plate 102, a shielding cover 103, a primary conductor 2, an aluminum pipe 201, an aluminum rod 202, an insulating sleeve 3, an isolating section 301, an inserting section 302, a P1 conductive rod 4, a P1 terminal board 401, a first fixing component 402, a first nut 4021, a positioning sleeve 4022, a first connecting section 403, a first bushing 404, a first connecting plate 405, a P2 conductive rod 5, a P2, a second fixing component 502, a second nut 5021, a limiting plate 5022, a second connecting section 503, a second bushing 504, a second connecting plate 505, a first serial-parallel plate 6, a second serial-parallel plate 7, a C1, a third connecting plate 801, a C2 and a fourth connecting plate 901.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, the invention includes a primary conductor 2, a mounting base 1, and a P1 conducting rod 4, a P2 conducting rod 5, a C1 connecting plate 8 and a C2 connecting plate 9 which are arranged in the mounting base 1, wherein as shown in fig. 2 to 3, the primary conductor 2 includes an aluminum pipe 201 and an aluminum rod 202 arranged in the aluminum pipe 201, and the primary conductor 2 is U-shaped, and has one end serving as a P1 connecting end and the other end serving as a P2 connecting end.
As shown in fig. 4 to 5, the P1 conducting rod 4 and the C1 connecting plate 8 are connected to the P1 connecting end of the primary conductor 2, wherein the P1 conducting rod 4 includes a first connecting portion 403, a first sleeve 404 and a first connecting plate 405, the first connecting portion 403 is of an inverted L shape, a horizontal section of an upper side of the first connecting portion 403 is fixedly mounted on the mounting base 1 through a first fixing component 402, the horizontal section extends out of the mounting base 1 and is connected to a P1 terminal block 401, a lower end of a vertical section of the first connecting portion 403 is fixedly connected to the first sleeve 404, the first sleeve 404 is sleeved on the aluminum tube 201 of the P1 connecting end of the primary conductor 2, a first connecting plate 405 is disposed on a side of the first sleeve 404 away from the first connecting portion 403, the C1 connecting plate 8 is disposed on an upper side of the first connecting plate 405, and the C1 connecting plate 8 is sleeved on the aluminum rod 202 of the P1 connecting end of the primary conductor 2, the C1 connecting plate 8 is connected to the lower first connecting plate 405 by a first series-parallel plate 6.
As shown in fig. 4 and 6, the P2 conducting rod 5 and the C2 connecting plate 9 are connected to the P2 connecting end of the primary conductor 2, the P2 conducting rod 5 includes a second connecting portion 503, a second sleeve 504 and a second connecting plate 505, the second connecting portion 503 is horizontally arranged and is fixed on the mounting base body 1 through a second fixing component 502, one end of the second connecting portion 503 extends out of the mounting base body 1 to be connected to the P2 501, the other end is connected to the second sleeve 504, the second sleeve 504 is sleeved on the aluminum rod 202 of the P2 connecting end of the primary conductor 2, the second connecting plate 505 is arranged on the side of the second sleeve 504 far from the second connecting portion 503, the C2 connecting plate 9 is arranged on the lower side of the terminal plate 505, the outer end of the C2 connecting plate 9 is provided with a fourth sleeve 901 which is sleeved on the aluminum tube 201 of the P2 connecting end of the primary conductor 2, and the C2 is connected to the second connecting plate 505 on the upper side through a second connecting plate 7 in series and parallel.
As shown in fig. 5, the first fixing assembly 402 includes a first nut 4021 and an insulating positioning sleeve 4022, the first nut 4021 and the positioning sleeve 4022 are both sleeved on the horizontal section of the first connecting portion 403, the positioning sleeve 4022 is disposed in a through hole on the mounting base 1 through which the horizontal section of the first connecting portion 403 passes, the first nut 4021 and the vertical section of the first connecting portion 403 are disposed on two sides of the positioning sleeve 4022 and cooperate to define the position of the P1 conductive rod 4, and a gasket is disposed between the first nut 4021 and the positioning sleeve 4022.
As shown in fig. 6, the second fixing assembly 502 includes a second nut 5021 and a limit plate 5022, wherein the second nut 5021 is sleeved on the second connecting portion 503 through a threaded connection, the second limit plate 5022 is fixedly disposed on the second connecting portion 503, and the second nut 5021 and the limit plate 5022 are respectively disposed on the inner side and the outer side of the mounting base 1 and cooperate to define the position of the P2 conducting rod 5.
As shown in fig. 5 to 6, insulating sleeves 3 are respectively disposed between the third sleeve 801 and the first sleeve 404 and between the second sleeve 504 and the fourth sleeve 901, each insulating sleeve 3 includes an isolating section 301 and an inserting section 302, the isolating section 301 is disposed between two corresponding sleeves, and the inserting section 302 is inserted into the aluminum pipe 201 to increase an insulating distance, so as to ensure an insulating property.
As shown in fig. 4, the installation base body 1 includes a shielding cover 103, an insulating base plate 102 and voltage-sharing covers 101, the two voltage-sharing covers 101 are respectively and fixedly disposed at lower sides of two ends of the insulating base plate 102, the shielding cover 103 is disposed at an upper side of the insulating base plate 102, and two ends of the primary conductor 2 respectively pass through the voltage-sharing covers 101 at corresponding sides and then pass through the insulating base plate 102 to enter the installation base body 1. The other primary conductor 2 is provided in a primary body to which the voltage-equalizing cover 101 is attached.
The working principle of the invention is as follows:
the invention realizes series-parallel conversion by utilizing a first series-parallel plate 6, a second series-parallel plate 7, a C1 connecting plate 8 and a C2 connecting plate 9, and further realizes different transformation ratios, when the first series-parallel plate 6 and the second series-parallel plate 7 are disassembled, and the C1 connecting plate 8 and the C2 connecting plate 9 are connected together, the series function is realized, when the C1 connecting plate 8 and the C2 connecting plate 9 are disconnected, the first series-parallel plate 6 and the second series-parallel plate 7 are reinstalled, the P1 and the C1 are connected together, and the P2 and the C2 are connected together, the parallel function is realized.
In the prior art, the structural stability of the aluminum bar and aluminum tube type primary conductor 2 series-parallel connection design needs to be improved, as shown in the patent of the invention in china with the publication number of CN 2922084Y. The P1 conducting rod 4 and the C2 connecting plate 9 are provided with sleeves to be connected with the aluminum pipe in a sleeved mode, the P2 conducting rod 5 and the C1 connecting plate 8 are provided with sleeves to be connected with the aluminum rod in a sleeved mode instead of being directly welded on the aluminum pipe 201 or the aluminum rod 202, installation is convenient, maintenance and replacement are convenient, in addition, the P1 conducting rod 4 and the P2 conducting rod 5 are fixedly installed on the installation base body 1 through fixing components respectively, the structure is firmer and more stable, meanwhile, the insulating sleeve 3 is only arranged between adjacent sleeves, and one part of the insulating sleeve is inserted into the aluminum pipe 201, the insulating distance is prolonged, and the insulating performance is improved.
Claims (5)
1. The utility model provides a dry-type current transformer aluminium bar formula series-parallel structure which characterized in that: the device comprises a primary conductor (2), a mounting base body (1), and a P1 conductive rod (4), a P2 conductive rod (5), a C1 connecting plate (8) and a C2 connecting plate (9) which are arranged in the mounting base body (1), wherein the primary conductor (2) comprises an aluminum pipe (201) and an aluminum rod (202);
the P1 conducting rod (4) comprises a first connecting part (403), a first sleeve (404) and a first connecting plate (405), the first connecting part (403) is inverted L-shaped, the horizontal section of the upper side of the first connecting part (403) is fixedly arranged on the installation base body (1) through a first fixing component (402), the horizontal section extends out of the installation base body (1) and is connected with a P1 terminal board (401), the lower end of the vertical section of the first connecting part (403) is fixedly connected with the first sleeve (404), the first sleeve (404) is sleeved on an aluminum pipe (201) of a P1 connecting end of a primary conductor (2), the first connecting plate (405) is arranged on the side, far away from the first connecting part (403), of the first sleeve (404), the C1 connecting plate (8) is arranged on the upper side of the first connecting plate (405), the outer end of the C1 (8) is provided with a third sleeve (801) sleeved on the aluminum rod (202) of a P1 connecting plate of the primary conductor (2), the C1 connecting plate (8) is connected with the first connecting plate (405) at the lower side through a first serial-parallel plate (6);
the P2 conducting rod (5) comprises a second connecting part (503), a second sleeve (504) and a second connecting plate (505), the second connecting part (503) is horizontally arranged and fixedly arranged on the mounting base body (1) through a second fixing component (502), one end of the second connecting part (503) extends out of the mounting base body (1) to be connected with a P2 terminal board (501), the other end of the second connecting part is connected with the second sleeve (504), the second sleeve (504) is sleeved on an aluminum rod (202) of a P2 connecting end of a primary conductor (2), the second connecting plate (505) is arranged on one side, far away from the second connecting part (503), of the second sleeve (504), the C2 connecting plate (9) is arranged on the lower side of the second connecting plate (505), the outer end of the C2 connecting plate (9) is provided with a fourth sleeve (901) sleeved on an aluminum tube (201) of the P2 connecting end of the primary conductor (2), and the C2 connecting plate (9) is connected to the upper second connecting plate (505) by a second series-parallel plate (7).
2. The aluminum rod type series-parallel structure of a dry type current transformer according to claim 1, wherein: the first fixing assembly (402) comprises a first nut (4021) and a positioning sleeve (4022), the first nut (4021) and the positioning sleeve (4022) are sleeved on the horizontal section of the first connecting portion (403), the positioning sleeve (4022) is arranged in a through hole in the mounting base body (1) through which the horizontal section of the first connecting portion (403) penetrates, and the vertical sections of the first nut (4021) and the first connecting portion (403) are arranged on two sides of the positioning sleeve (4022).
3. The aluminum rod type series-parallel structure of a dry type current transformer according to claim 1, wherein: the second fixing assembly (502) comprises a second nut (5021) and a limiting plate (5022), wherein the second nut (5021) is sleeved on the second connecting portion (503), the limiting plate (5022) is fixedly arranged on the second connecting portion (503), and the second nut (5021) and the limiting plate (5022) are respectively arranged on the inner side and the outer side of the mounting base body (1).
4. The aluminum rod type series-parallel structure of a dry type current transformer according to claim 1, wherein: an insulating sleeve (3) is arranged between the third sleeve (801) and the first sleeve (404) and between the second sleeve (504) and the fourth sleeve (901), the insulating sleeve (3) comprises an isolation section (301) and an insertion section (302), and the insertion section (302) is inserted into the aluminum pipe (201).
5. The aluminum rod type series-parallel structure of a dry type current transformer according to claim 1, wherein: the installation pedestal body (1) comprises a shielding cover (103), an insulating bottom plate (102) and voltage-sharing covers (101), the two voltage-sharing covers (101) are fixedly arranged at the lower sides of the two ends of the insulating bottom plate (102) respectively, the shielding cover (103) is arranged at the upper side of the insulating bottom plate (102), and the two ends of the primary conductor (2) pass through the voltage-sharing covers (101) on the corresponding sides respectively and then pass through the insulating bottom plate (102) to enter the installation pedestal body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243862.9A CN114464436A (en) | 2020-11-10 | 2020-11-10 | Aluminum rod type series-parallel connection structure of dry current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243862.9A CN114464436A (en) | 2020-11-10 | 2020-11-10 | Aluminum rod type series-parallel connection structure of dry current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114464436A true CN114464436A (en) | 2022-05-10 |
Family
ID=81404956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011243862.9A Pending CN114464436A (en) | 2020-11-10 | 2020-11-10 | Aluminum rod type series-parallel connection structure of dry current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114464436A (en) |
-
2020
- 2020-11-10 CN CN202011243862.9A patent/CN114464436A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101145439B (en) | Generator transformer | |
| CN109148204A (en) | A kind of gas-insulating and fully-enclosed combined electrical apparatus and its three-station isolating grounding switch | |
| CN114464436A (en) | Aluminum rod type series-parallel connection structure of dry current transformer | |
| CN213303885U (en) | Aluminum rod type series-parallel connection structure of dry current transformer | |
| CN201262878Y (en) | Multifunctional trunk sub termination for primary side of rectifier transformer | |
| CN218958519U (en) | Novel compound sleeve type outdoor terminal | |
| CN2922084Y (en) | Multi-current ratio, high-accuracy organic compound insulation dry-type high voltage current mutual inductor | |
| CN114243525B (en) | All-in-one turns on | |
| CN206041295U (en) | American box -type substation of improved generation 10kV with simple eye through -hole | |
| CN216487670U (en) | Aluminum row type series-parallel connection structure of dry current transformer | |
| CN201323120Y (en) | Generator room built-in transformer for wind power generation | |
| CN210517579U (en) | One and one half wiring type GIS equipment for offshore wind power | |
| CN217008898U (en) | SF6 gas current transformer | |
| CN211720225U (en) | Outgoing line structure for 110kV overhead line | |
| CN201118131Y (en) | Prepackage type integrated transformer substation | |
| CN201466477U (en) | Neutral point gap device of digital substation | |
| CN2836280Y (en) | Improved busbar in fully insulated switch cabinet for ring network | |
| CN2501171Y (en) | Air high-voltage current transformer with new structure | |
| CN215299049U (en) | Assembled three-phase dry-type transformer | |
| CN211018010U (en) | Heavy current isolation handcart | |
| CN202025990U (en) | Transformer bank combined electric appliance | |
| CN216133754U (en) | Current transformer center guide rod fixing structure using O-shaped ring for auxiliary positioning | |
| CN219105869U (en) | Transformer for conveying electric comprehensive energy | |
| CN213600769U (en) | High-voltage current metering device in box transformer substation and box transformer substation with same | |
| CN218647763U (en) | External three-phase common box type current transformer assembly structure for 40.5kVGIS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220510 |