CN219958764U - Three-phase integrated current transformer for ring main unit - Google Patents
Three-phase integrated current transformer for ring main unit Download PDFInfo
- Publication number
- CN219958764U CN219958764U CN202321124685.1U CN202321124685U CN219958764U CN 219958764 U CN219958764 U CN 219958764U CN 202321124685 U CN202321124685 U CN 202321124685U CN 219958764 U CN219958764 U CN 219958764U
- Authority
- CN
- China
- Prior art keywords
- phase
- secondary coil
- iron core
- square groove
- shell
- 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.)
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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229920005749 polyurethane resin Polymers 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 2
- 238000010125 resin casting Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model discloses a three-phase integrated current transformer for a ring main unit, which comprises the following components: the cross section is three ring-shaped hollow shell, the square groove of placing binding post is fixed with to the top of shell, three ring-shaped iron core has been placed in the shell, the winding has secondary coil on the iron core, secondary coil's lead-out wire links to each other with the secondary coil binding post that is located square groove. The utility model has simple structure, adopts the mode of matching the shell and the coil, is suitable for rectification application, and can ensure the stable current of the circuit; the device has the advantages of small volume, convenient installation and low manufacturing and maintenance cost.
Description
Technical Field
The utility model relates to the field of power measurement equipment, in particular to a three-phase integrated current transformer for a ring main unit.
Background
The current transformer plays roles of current transformation and electrical isolation, and is a sensor for acquiring current information of an electrical primary loop by secondary equipment such as a measuring instrument and relay protection in an electric power system, the current transformer converts high current into low current in proportion, and the current transformer is connected with the primary system in a primary side-by-side manner, and is connected with the measuring instrument and relay protection in a secondary side-by-side manner. The current transformer generally comprises a primary coil, a secondary coil, an iron core, an insulating support, an outgoing terminal and the like. The design of the three-phase integrated current transformer for the ring main unit at present has the problems of complex structure, higher cost and the like.
Disclosure of Invention
Aiming at the problems, the utility model provides the three-phase integrated current transformer for the ring main unit, which has the advantages of small volume, reasonable layout and convenience in installation.
In order to achieve the above object, the present utility model provides a three-phase integrated current transformer for a ring main unit, which includes: the cross section of the hollow shell is three annular, and an A-phase annular iron core, a B-phase annular iron core and a C-phase annular iron core are sequentially arranged in the shell; the A-phase annular iron core is wound with an A-phase secondary coil, the B-phase annular iron core is wound with a B-phase secondary coil, and the C-phase annular iron core is wound with a C-phase secondary coil;
an A-phase square groove, a B-phase square groove and a C-phase square groove are formed above the shell, an A-phase secondary coil connecting terminal is placed in the A-phase square groove, a B-phase secondary coil connecting terminal is placed in the B-phase square groove, and a C-phase secondary coil connecting terminal is placed in the C-phase square groove;
the A-phase secondary coil is connected with the A-phase secondary coil wiring terminal through an outgoing line, the B-phase secondary coil is connected with the B-phase secondary coil wiring terminal through an outgoing line, and the C-phase secondary coil is connected with the C-phase secondary coil wiring terminal through an outgoing line.
In the preferred mode, the materials of the annular iron core A, the annular iron core B and the annular iron core C are coiled silicon steel sheets.
Preferably, polyurethane resin is poured into the shell and the square groove.
Under the preferred mode, the fixed orifices that is connected through screw and looped netowrk cabinet have all been seted up to four corners of shell.
The beneficial effects of the utility model are as follows: the utility model has simple structure, adopts the mode of matching the shell and the coil, is suitable for rectification application, and can ensure the stable current of the circuit; the device has the advantages of small volume, convenient installation and low manufacturing and maintenance cost.
Drawings
FIG. 1 is a front view of the present utility model;
fig. 2 is a top view of the present utility model.
In the figure: 1. an iron core; 2. a secondary coil; 3. a polyurethane resin; 4. a housing; 5. a fixing hole; 6. secondary coil connecting terminals; 7. a square groove.
Detailed Description
Specific examples:
as shown in fig. 1 and 2, the three-phase integrated current transformer for a ring main unit of the present utility model adopts copper wire winding to manufacture a secondary coil on an iron core, the secondary coil is placed in a shell, and the shaping of the transformer is completed through polyurethane resin casting, and the three-phase integrated current transformer comprises: a hollow shell 4 with a circular cross section, wherein a square groove 7 communicated with the shell 4 and used for placing a wiring terminal is fixedly connected above the shell 4;
the annular iron core 1 is placed in the shell 4, the secondary coil 2 is wound on the iron core 1, and outgoing lines of the secondary coil 2 are connected with the secondary coil wiring terminals 6 located in the square grooves 7. The iron core 1 is made of coiled silicon steel sheets. Polyurethane resin 3 is poured into the shell 4 and the square groove 7, so that the totally-enclosed current transformer is formed. Four corners of the shell 4 are provided with fixing holes 5 which are connected with the ring main unit through screws in a threaded mode.
The utility model adopts the method of placing the coil in the shell and pouring the polyurethane resin to finish the production of the product, greatly simplifies the production flow, leads the product to be more miniaturized and leads the production to be more concise; the current transformer for rectification ensures stable current when a circuit is supplied, and provides a reliable product for intelligent power distribution; the mounting mode of the utility model is more reasonable and simple, and can well replace epoxy resin casting products cast by using a die; the utility model has the advantages of small volume, reasonable layout, convenient installation, saving of manufacturing and maintenance costs and convenient use conditions for customers; the iron core adopts a coiled silicon steel sheet iron core, adopts a fully-closed structure, and the iron core and the coil are encapsulated inside, so that the service life of the transformer is prolonged; the utility model has low consumable and low equipment cost, improves the safety and the installation simplicity of the current transformer, and is a safe, reliable and easy-to-install rectifying current transformer.
The application conditions of the utility model are as follows: is suitable for indoor network cabinets. The application environment of the utility model is as follows: load power factor cos phi = 0.8 (hysteresis); the ambient temperature is between-40 ℃ and 45 ℃; the daily average temperature is not higher than 45 ℃; the altitude is not more than 3000m.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should be covered by the protection scope of the present utility model by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (4)
1. Three-phase integrated current transformer for looped netowrk cabinet, its characterized in that includes: the cross section of the hollow shell is three annular, and an A-phase annular iron core, a B-phase annular iron core and a C-phase annular iron core are sequentially arranged in the shell; the A-phase annular iron core is wound with an A-phase secondary coil, the B-phase annular iron core is wound with a B-phase secondary coil, and the C-phase annular iron core is wound with a C-phase secondary coil;
an A-phase square groove, a B-phase square groove and a C-phase square groove are formed above the shell, an A-phase secondary coil connecting terminal is placed in the A-phase square groove, a B-phase secondary coil connecting terminal is placed in the B-phase square groove, and a C-phase secondary coil connecting terminal is placed in the C-phase square groove;
the A-phase secondary coil is connected with the A-phase secondary coil wiring terminal through an outgoing line, the B-phase secondary coil is connected with the B-phase secondary coil wiring terminal through an outgoing line, and the C-phase secondary coil is connected with the C-phase secondary coil wiring terminal through an outgoing line.
2. The three-phase integrated current transformer for the ring main unit according to claim 1, wherein the materials of the A-phase annular iron core, the B-phase annular iron core and the C-phase annular iron core are coiled silicon steel sheets.
3. The three-phase integrated current transformer for a ring main unit according to claim 1, wherein polyurethane resin is cast in the outer shell and the square groove.
4. The three-phase integrated current transformer for a ring main unit according to claim 1, wherein four corners of the housing are provided with fixing holes connected with the ring main unit through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124685.1U CN219958764U (en) | 2023-05-11 | 2023-05-11 | Three-phase integrated current transformer for ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124685.1U CN219958764U (en) | 2023-05-11 | 2023-05-11 | Three-phase integrated current transformer for ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219958764U true CN219958764U (en) | 2023-11-03 |
Family
ID=88554224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321124685.1U Active CN219958764U (en) | 2023-05-11 | 2023-05-11 | Three-phase integrated current transformer for ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219958764U (en) |
-
2023
- 2023-05-11 CN CN202321124685.1U patent/CN219958764U/en active Active
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| GR01 | Patent grant |