CN202758735U - Three-phase integrated type current transformer for intelligent user switch for dividing - Google Patents
Three-phase integrated type current transformer for intelligent user switch for dividing Download PDFInfo
- Publication number
- CN202758735U CN202758735U CN 201220407081 CN201220407081U CN202758735U CN 202758735 U CN202758735 U CN 202758735U CN 201220407081 CN201220407081 CN 201220407081 CN 201220407081 U CN201220407081 U CN 201220407081U CN 202758735 U CN202758735 U CN 202758735U
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- Prior art keywords
- phase coil
- phase
- coil
- current transformer
- insulator
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- 239000012212 insulator Substances 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000013351 cheese Nutrition 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 4
- 235000012771 pancakes Nutrition 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model relates to electric power system high voltage measurement and a protection device, in particular to a three-phase integrated type current transformer for an intelligent user switch for dividing. According to the three-phase integrated type current transformer for the intelligent user switch for dividing, four ring shaped iron cores are respectively wound with a secondary winding to form an A phase coil, a B phase coil, a C phase coil and a zero sequence coil. The secondary winding is connected with a secondary connection terminal. The A phase coil, the B phase coil and the C phase coil are of circular ring shaped structure. The A phase coil and the B phase coil are installed in the inner portion of the oval circular ring shaped zero sequence coil in sleeved mode, and the B phase and the C phase coil are arranged in the inner portion of the oval circular ring shaped zero coil in sleeved mode, wherein the distance between the A phase coil and the B phase coil is equal to the distance between the B phase and the C phase coil. The A phase coil, the B phase coil, the C phase coil and the zero sequence coil are fixedly sealed inside an insulator which is molded by vacuum pouring epoxy resin. The insulator is of oval pancake shape. The three-phase integrated type current transformer for the intelligent user switch for dividing has the advantages of being small in size, simple in structure, convenient to connect, flexible to install, perfect in performance and reliable in insulation.
Description
Technical field
The utility model relates to electric power system high-tension measurement and protective device, specifically a kind of intelligent subscriber demarcation switch Three-phase common-body current transformer.
Background technology
The intelligent subscriber demarcation switch is the capital equipment in the automation distribution network of city, be installed on distribution line and user's boundary position, can open the Fault Isolation that occurs in user circle, prevent from the outdoor high-voltage switch of fault pervasion to the system line finally improved power supply reliability and power supply quality.At present the supporting current transformer in the switch has three single-phase current transformers, and a single-phase zero-sequence transformer is set in respectively on bushing successively, and the gas tank that is positioned at switch with other element integral body is inner.Mainly there are the following problems for this version: building block is more, the problem such as Duo very much than more complicated, qualifying point during installation and maintenance.This Three-phase common-body current transformer is counted the new generation product of exploitation just in line with the characteristics of simple in structure, flexible for installation, easy care, economy, further improve the designing and manufacturing level of intelligent subscriber demarcation switch.
The utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provide a kind of adopt that the epoxide resin vacuum cast forms, volume is little, simple in structure, easy-to-connect, flexible for installation, insulation is reliable, the novel intelligent user demarcation switch Three-phase common-body current transformer of superior performance.
The technical scheme that the utility model adopts for achieving the above object is: intelligent subscriber demarcation switch Three-phase common-body current transformer, be wound with respectively secondary winding on the iron core of four annulars, form the A phase coil, the B phase coil, C phase coil and zero sequence coil, secondary winding all is connected with secondary wiring terminals, the A phase coil, the B phase coil, the C phase coil is cirque structure, A phase coil and B phase coil, the equidistant oval ring zero sequence coil inside that is sleeved on of B phase coil and C phase coil, the A phase coil, the B phase coil, C phase coil and zero sequence coil are enclosed in the insulator that epoxide resin vacuum pours into admittedly, and insulator is oval cheese shape.
Described insulator has the bus hole of three equidistant circles in the central distribution of A phase coil, B phase coil, C phase coil.
Described secondary wiring terminals is positioned at indent position, insulator side bottom.
Described insulator base plane is embedded with four embedded nuts that equidistantly distribute.
The utlity model has following advantage:
1, volume is little, simple in structure: it is the common type structure that A, B, C three-phase coil and zero sequence coil adopt poured with epoxy resin, saved the in the past very large space of three single-phase current transformers and a zero sequence current mutual inductor, small product size is very little, and structure is more simply saved.
2, easy-to-connect, flexible for installation: specially designed secondary wiring terminals position is protected wire casing with switch inside and can be combined by smooth transition, and wiring is convenient; Four embedded nuts that equidistantly distribute are realized accurately locating fixed installation with four installing holes of switch inside, install very convenient flexible.
3, perfect performance, insulation are reliable: three equidistant zero sequence coil inside that are sleeved on of monophase current coil; make product realize simultaneously the function of individual phase measurement and the relaying protection of three-phase zero sequence; performance is improved reliable more; the cast of whole employing epoxide resin vacuum forms, and good sealed insulation has guaranteed that the product insulation is very reliable.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model external structure end view;
Fig. 3 is the utility model internal structure schematic diagram;
Among the figure: 1, iron core; 2, secondary winding; 3, A phase coil; 4, B phase coil; 5, C phase coil; 6, zero sequence coil; 7, secondary wiring terminals; 8, insulator; 9, bus hole; 10, embedded nut; 11, hoisting bracket.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As Figure 1-3, single phase winding is that secondary winding 2 is wound on the iron core 1 of circular ring type equably, insulate and the wrapping of padded coaming again, and three-phase single phase winding 3,4,5 is finished successively equally; Zero sequence coil 6 is that secondary winding 2 is wound on the oval ring-like iron core 1 equably, insulate and the wrapping of padded coaming again; After four coils 3,4,5,6 are finished respectively, adopt dedicated positioning device, with three single phase windings 3,4,5 equidistant zero sequence coil 6 inside that are sleeved on, and wrap up with insulating material and binding material, the hoisting bracket 11 that will be welded with four embedded nuts 10 with special-purpose jig again is fixed as one, form have secondary input terminal 7, hoisting bracket 11, secondary coil 3,4,5,6 coil device body; During the dress mould; coil device body adopts embedded nut 10 location on the hoisting bracket 11 to be fixed on the mould; wiring secondary wiring terminals 7; it is rear with the insulation of epoxide resin vacuum cast cured explosive to adjust distance; become a resin insulator 8 thereupon, make product realize simultaneously the function of individual phase measurement and the relaying protection of three-phase zero sequence, the whole epoxide resin vacuum that adopts is cast for a resin insulator 8; resin insulator 8 is oval cheese shape. product has simple in structure, the characteristics that volume is less.Three-phase coil 3,4,5 central distribution have the bus hole 9 of three equidistant circles, the three-phase high-voltage bus of its phase mutual edge distance and switch inside be equidistantly from.Use when installing, bus hole 9 can closely cooperate with the sleeve pipe of three-phase solid-sealed high voltage bus and install and insulated enclosure; Secondary wiring terminals 7 is positioned at insulator 8 side bottom indent positions, this Position Design is protected wire casing with switch inside and can be combined by smooth transition, the need that thoroughly solved original many instrument transformers are respectively the complicated processes of independent wiring, have made things convenient for the secondary cable lead-in wire simultaneously and have been conducive to the processing of secondary insulating.Insulator 8 base plane are embedded with four embedded nuts that equidistantly distribute 10, realize accurately locating fixed installation with four installing holes of switch inside.
When installing and using, this product is installed in outgoing line side in the switch casing, switch internal high pressure bus casing passes first the circular busbar hole of product, then the embedded nut with the bottom surface positions fixing to product, carry out the secondary lead wires wiring at box house according to designing requirement at last, the utility model installment work is convenient, flexible to be finished.
Claims (4)
1. intelligent subscriber demarcation switch Three-phase common-body current transformer, be wound with respectively secondary winding (2) on the iron core of four annulars (1), form A phase coil (3), B phase coil (4), C phase coil (5) and zero sequence coil (6), secondary winding (2) all is connected with secondary wiring terminals (7), it is characterized in that, A phase coil (3), B phase coil (4), C phase coil (5) is cirque structure, A phase coil (3) and B phase coil (4), equidistant oval ring zero sequence coil (6) inside that is sleeved on of B phase coil (4) and C phase coil (5), A phase coil (3), B phase coil (4), C phase coil (5) and zero sequence coil (6) are enclosed in the insulator (8) that epoxide resin vacuum pours into admittedly, and insulator (8) is oval cheese shape.
2. intelligent subscriber demarcation switch Three-phase common-body current transformer according to claim 1, it is characterized in that described insulator (8) has the bus hole (9) of three equidistant circles in the central distribution of A phase coil (3), B phase coil (4), C phase coil (5).
3. intelligent subscriber demarcation switch Three-phase common-body current transformer according to claim 1 is characterized in that, described secondary wiring terminals (7) is positioned at insulator (8) side bottom indent position.
4. intelligent subscriber demarcation switch Three-phase common-body current transformer according to claim 1 is characterized in that, described insulator (8) base plane is embedded with four embedded nuts that equidistantly distribute (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407081 CN202758735U (en) | 2012-08-16 | 2012-08-16 | Three-phase integrated type current transformer for intelligent user switch for dividing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407081 CN202758735U (en) | 2012-08-16 | 2012-08-16 | Three-phase integrated type current transformer for intelligent user switch for dividing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758735U true CN202758735U (en) | 2013-02-27 |
Family
ID=47737903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407081 Expired - Fee Related CN202758735U (en) | 2012-08-16 | 2012-08-16 | Three-phase integrated type current transformer for intelligent user switch for dividing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758735U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197763A (en) * | 2019-05-14 | 2019-09-03 | 恒源利通电气大厂有限公司 | A kind of outdoor three-phase integral current mutual inductor with stress cone and transistor |
| CN111312466A (en) * | 2020-04-13 | 2020-06-19 | 湖南科太电气有限公司 | Three-phase integrated coil of dry type voltage-regulating soft starter |
-
2012
- 2012-08-16 CN CN 201220407081 patent/CN202758735U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197763A (en) * | 2019-05-14 | 2019-09-03 | 恒源利通电气大厂有限公司 | A kind of outdoor three-phase integral current mutual inductor with stress cone and transistor |
| CN111312466A (en) * | 2020-04-13 | 2020-06-19 | 湖南科太电气有限公司 | Three-phase integrated coil of dry type voltage-regulating soft starter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20200816 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |