CN110993297A - Current transformer suitable for 10kV miniaturized switch cabinet - Google Patents
Current transformer suitable for 10kV miniaturized switch cabinet Download PDFInfo
- Publication number
- CN110993297A CN110993297A CN201911326112.5A CN201911326112A CN110993297A CN 110993297 A CN110993297 A CN 110993297A CN 201911326112 A CN201911326112 A CN 201911326112A CN 110993297 A CN110993297 A CN 110993297A
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- CN
- China
- Prior art keywords
- boss
- current transformer
- bus
- switch cabinet
- miniaturized
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- 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.)
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- 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
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention relates to a current transformer applicable to a 10kV miniaturized switch cabinet, which comprises: the bus bar connector comprises a body, a boss, a plurality of bus bar overlapping blocks, a secondary junction box and a fixed mounting plate; the body is provided with a left boss and a right boss which form an accommodating cavity; the left boss and the right boss are distributed on the left side and the right side of the body, and the body and the secondary junction box are fixedly arranged on the fixed mounting plate; the bus lapping block is vertically arranged with the body; the height of boss is higher than the height of generating line overlap joint piece, and the generating line overlap joint piece shields the intracavity that holds that forms at the boss completely. The bus lapping block is vertically arranged with the body, so that the size of the cabinet body is greatly reduced, and the bus lapping block is more convenient to install.
Description
Technical Field
The invention relates to a current transformer, in particular to a current transformer which is vertically arranged with a bus lapping block vertical to a body, greatly reduces the size of a cabinet body, is more convenient to install and is suitable for a 10kV miniaturized switch cabinet.
Background
The current transformer is a main element of a high-voltage switch cabinet and consists of a body poured by insulating materials, an internal electric coil, an exposed primary bus lapping block and a secondary junction box. The insulation distance in the switch cabinet is determined by the body structure and the bus lapping mode, and the overall size of the switch cabinet is also influenced. Because the insulation distance between the electrified body in the traditional size cubical switchboard satisfies the national standard requirement completely, the generating line overlap joint piece of current pillar type current transformer is the flush mounting overlap joint of the generating line preparation of being convenient for, and body insulation design also only considers reduction space and anti-creep electricity, need not to do for the electrical insulation between the three-phase generating line overlap joint and cut off the protection.
Disclosure of Invention
In view of the above problems, the main object of the present invention is to provide a vertical-type current transformer applicable to a 10kV miniaturized switch cabinet, in which a bus bar overlapping block is arranged perpendicular to a body, so that the size of the cabinet body is greatly reduced, and the installation is more convenient.
The invention solves the technical problems through the following technical scheme: a current transformer suitable for a 10kV miniaturized switch cabinet comprises the following components:
the bus bar comprises a body, a boss, a plurality of bus bar overlapping blocks, a secondary junction box and a fixed mounting plate, wherein the body is provided with a left boss and a right boss which form an accommodating cavity; the left boss and the right boss are distributed on the left side and the right side of the body.
The body and the secondary junction box are fixedly arranged on the fixed mounting plate.
The bus lapping block is vertically arranged with the body.
The height of boss is higher than the height of generating line overlap joint piece, and the generating line overlap joint piece shields the intracavity that holds that forms at the boss completely.
In a specific implementation example of the invention, the bus bar overlapping block comprises two bus bar overlapping blocks, and a bus bar hole is formed in each bus bar overlapping block.
In the embodiment of the invention, the lug lugs extending out from the left side and the right side are arranged on the lug boss.
In an embodiment of the present invention, a slope is provided at a portion where the body and the boss are combined.
In an embodiment of the invention, the main body and the secondary junction box are fixedly mounted on the fixed mounting plate by welding and screw connection.
In the embodiment of the invention, the fixed mounting plate for mounting the position of the secondary junction box is provided with a waist hole and a semicircular groove.
In the embodiment of the present invention, the width range of the body is: 520-550 mm.
In the specific embodiment of the invention, the height of the lug boss is 10-50mm higher than that of the bus bar lapping block.
The positive progress effects of the invention are as follows: the current transformer is suitable for a 10kV miniaturized switch cabinet; the body is provided with the outer extending bosses of the two side walls, so that an accommodating cavity is formed, and the insulating protection is effectively carried out on the electrified bus lapping block in the accommodating cavity.
The invention twists the lapping direction of the bus lapping block, so that the bus is vertically installed instead of being horizontally installed, which occupies the width of the cabinet body. The insulating size of the cabinet body is determined by changing the bus width into the bus thickness, so that the size of the cabinet body is greatly reduced.
The casting mold of the current transformer has no difficulty, almost no cost increase and no need of the change of an assembly process, simplifies and increases the electrical insulation protection of the bus lapping block, changes the installation direction of the bus and the current transformer and ensures that the cabinet body can meet the aim of realizing the miniaturization of the cabinet body under the condition of air insulation without adding any insulation piece in a switch cabinet.
According to the invention, the insulating surface wall of the body of the current transformer is redesigned, and the lapping direction of the copper bus lapping block is changed, so that the electric insulation protection of the current transformer on the bus lapping block is increased, and the aim of integrally miniaturizing the switch cabinet is fulfilled.
The invention also adds the support lug, and the fixed mounting plate at the position for mounting the secondary junction box is provided with the waist hole and the semicircular groove, thereby facilitating wiring and mounting.
Drawings
Fig. 1 is a perspective view of a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of a schematic diagram of the overall structure of the present invention.
Fig. 3 is a left side view of a schematic of the overall structure of the present invention.
The following are the names corresponding to the reference numbers in the invention:
the structure comprises a body 1, a boss 2, a bus lapping block 3, a secondary junction box 4 and a fixed mounting plate 5;
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a perspective view of a schematic view of an overall structure of the present invention, fig. 2 is a front view of the schematic view of the overall structure of the present invention, and fig. 3 is a left side view of the schematic view of the overall structure of the present invention. As shown in fig. 1 to 3, the current transformer applicable to a 10kV miniaturized switch cabinet provided by the present invention comprises: the main body 1, the boss 2, the plurality of bus bar overlapping blocks 3, the secondary junction box 4, the fixed mounting plate 5 and the main body 1 are provided with a left boss and a right boss which form an accommodating cavity; the left boss and the right boss are distributed on the left side and the right side of the body 1, and the body 1 and the secondary junction box 4 are fixedly arranged on the fixed mounting plate 5; the bus lapping block 3 is vertically arranged with the body 1; the height of the left boss 2 and the right boss 2 is higher than that of the bus bar overlapping block 3, and the bus bar overlapping block 3 is completely shielded in an accommodating cavity formed by the bosses 2.
In a specific implementation process, the busbar overlapping block 3 comprises two blocks (see fig. 1), and a busbar hole is formed in the busbar overlapping block 3.
The boss 2 is provided with support lugs 201 extending out of the left side and the right side, and the part where the body 1 and the boss 2 are combined is provided with a slope 101.
The main body 1 and the secondary junction box 4 are fixedly arranged on the fixed mounting plate 5 in a welding and screw connection mode.
A waist hole and a semicircular groove are arranged on the fixed mounting plate 5 at the position where the secondary junction box 4 is mounted.
In a specific embodiment, the width of the body 1 is: 520 mm and 550mm, the height of the boss 2 is 10-50mm higher than the bus bar lapping block 3.
According to the invention, the outer extending bosses on the two side walls are additionally arranged on the body to form the accommodating cavity, so that the live bus lapping block in the accommodating cavity is effectively insulated and protected.
The invention twists the lapping direction of the bus lapping block, so that the bus is vertically installed instead of being horizontally installed, which occupies the width of the cabinet body. The insulating size of the cabinet body is determined by changing the bus width into the bus thickness, so that the size of the cabinet body is greatly reduced.
The casting mold of the current transformer has no difficulty, almost no cost increase and no need of the change of an assembly process, simplifies and increases the electrical insulation protection of the bus lapping block, changes the installation direction of the bus and the current transformer and ensures that the cabinet body can meet the aim of realizing the miniaturization of the cabinet body under the condition of air insulation without adding any insulation piece in a switch cabinet.
According to the invention, the insulating surface wall of the body of the current transformer is redesigned, and the lapping direction of the copper bus lapping block is changed, so that the electric insulation protection of the current transformer on the bus lapping block is increased, and the aim of integrally miniaturizing the switch cabinet is fulfilled.
The invention also adds the support lug 201, and the fixed mounting plate 5 at the position where the secondary junction box 4 is mounted is provided with a waist hole and a semicircular groove, thereby facilitating wiring and mounting.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a current transformer suitable for miniaturized cubical switchboard of 10kV which characterized in that: the current transformer suitable for 10kV miniaturized cubical switchboard includes:
the bus bar connector comprises a body, a boss, a plurality of bus bar overlapping blocks, a secondary junction box and a fixed mounting plate;
the body is provided with a left boss and a right boss which form an accommodating cavity;
the left boss and the right boss are distributed on the left side and the right side of the body,
the main body and the secondary junction box are both fixedly arranged on the fixed mounting plate;
the bus lapping block is vertically arranged with the body;
the height of boss is higher than the height of generating line overlap joint piece, and the generating line overlap joint piece shields the intracavity that holds that forms at the boss completely.
2. The current transformer applicable to the 10kV miniaturized switch cabinet according to claim 1, wherein: the bus lapping block comprises two bus lapping blocks, and a bus hole is formed in each bus lapping block.
3. The current transformer applicable to the 10kV miniaturized switch cabinet according to claim 1, wherein: the lug lugs extending out of the left side and the right side are arranged on the lug boss.
4. The current transformer applicable to the 10kV miniaturized switch cabinet according to claim 1, wherein: a slope is arranged on the combined part of the body and the boss.
5. The current transformer applicable to the 10kV miniaturized switch cabinet according to claim 1, wherein: the body and the secondary junction box are fixedly installed on the fixed installation plate in a welding and screw connection mode.
6. The current transformer applicable to the 10kV miniaturized switch cabinet according to claim 1, wherein: the fixed mounting plate for mounting the secondary junction box is provided with a waist hole and a semicircular groove.
7. The current transformer applicable to the 10kV miniaturized switch cabinet according to claim 1, wherein: the width scope of the body is: 520-550 mm.
8. The current transformer applicable to the 10kV miniaturized switch cabinet according to claim 1, wherein: the height of the lug boss is 10-50mm higher than the bus lapping block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326112.5A CN110993297A (en) | 2019-12-20 | 2019-12-20 | Current transformer suitable for 10kV miniaturized switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326112.5A CN110993297A (en) | 2019-12-20 | 2019-12-20 | Current transformer suitable for 10kV miniaturized switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110993297A true CN110993297A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911326112.5A Pending CN110993297A (en) | 2019-12-20 | 2019-12-20 | Current transformer suitable for 10kV miniaturized switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110993297A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113793742A (en) * | 2021-08-03 | 2021-12-14 | 河南平高通用电气有限公司 | Strut type current transformer and switch cabinet |
-
2019
- 2019-12-20 CN CN201911326112.5A patent/CN110993297A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113793742A (en) * | 2021-08-03 | 2021-12-14 | 河南平高通用电气有限公司 | Strut type current transformer and switch cabinet |
| CN113793742B (en) * | 2021-08-03 | 2024-04-02 | 河南平高通用电气有限公司 | Pillar type current transformer and switch cabinet |
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