CN207068639U - Outdoor pole top switch three-phase current combination transformer - Google Patents
Outdoor pole top switch three-phase current combination transformer Download PDFInfo
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- CN207068639U CN207068639U CN201720976319.7U CN201720976319U CN207068639U CN 207068639 U CN207068639 U CN 207068639U CN 201720976319 U CN201720976319 U CN 201720976319U CN 207068639 U CN207068639 U CN 207068639U
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- phase
- phase coils
- pole top
- coils
- top switch
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Abstract
Power system high-tension measurement and protection device are the utility model is related to, specifically a kind of outdoor pole top switch three-phase current combination transformer.Including composite insulator and the A phase coils being packaged in compound inslation body, B phase coils, C phase coils and zero sequence coil, wherein A phase coils, B phase coils and C phase coils are arranged at intervals successively, zero sequence coil closed assembly is on A phase coils, B phase coils and C phase coils, the outside of composite insulator it is corresponding with each phase coil be provided with three insulated columns, the secondary lead wires of A phase coils and C phase coils are drawn by the insulated column of both sides, and the secondary lead wires of zero sequence coil and B phase coils are drawn by the insulated column of centre.The utility model is formed using the insulation of embedding polyurethane, has the characteristics that small volume, simple in construction, easy-to-connect, flexible for installation, insulation is reliable, superior performance.
Description
Technical field
Power system high-tension measurement and protection device are the utility model is related to, specifically a kind of outdoor pole top switch three
Phase current combination transformer.
Background technology
Intelligent subscriber demarcation switch is the capital equipment in urban power network automation distribution network, is installed on distribution line and user
Boundary position, the Fault Isolation occurred in user circle can be opened, prevented the open air on fault pervasion to system line is high
Compress switch, it is final to improve power supply reliability and power supply quality.The supporting current transformer in switch has three single-phase electricities at present
Current transformer, a single-phase ZCT, using being set in successively respectively on a bushing, with other element entirety positions
Inside the gas tank of switch.This kind of structure type is primarily present following problem：Building block is more, installation and maintenance when it is more numerous
Lock, the problems such as qualifying point is very more.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of outdoor pole top switch three-phase current combination mutual inductance
Device.To solve, current transformer part in existing intelligent subscriber demarcation switch is more, installation is complicated, wiring is complicated, quality control
The shortcomings of point.
To achieve these goals, the utility model uses following technical scheme：
A kind of outdoor pole top switch three-phase current combination transformer, including composite insulator and it is packaged in the compound inslation
Internal A phase coils, B phase coils, C phase coils and zero sequence coil, wherein A phase coils, B phase coils and C phase coils are spaced successively
Set, the zero sequence coil closed assembly on the A phase coils, B phase coils and C phase coils, the outside of the composite insulator with
Each phase coil it is corresponding be provided with three insulated columns, the secondary lead wires of the A phase coils and C phase coils are drawn by the insulated column of both sides
Go out, the secondary lead wires of the zero sequence coil and B phase coils are drawn by the insulated column of centre.
The composite insulator includes polyurethane insulation and the silicon rubber being coated on the outside of the polyurethane insulation is protected
Sheath.
The composite insulator is oval pie structure.
The end of the insulated column is provided with pilot protection pipe, and the end of the pilot protection pipe is bending structure, and described two
Secondary lead is drawn in the bending structure by the pilot protection pipe end.
On the outer surface of the insulated column multiple insulated column full skirts are provided with along short transverse.
The side of the composite insulator position corresponding with each phase coil is provided with boss, on the boss and described multiple
The opposite side for closing insulator is respectively equipped with phase full skirt.
Position of the outside of the composite insulator between adjacent another phase coil is provided with end full skirt.
The center of the A phase coils, B phase coils and C phase coils is equipped between bus hole and two neighboring bus hole
Distance it is equal.
The A phase coils, B phase coils and C phase line coil structures are identical, are including iron core and secondary winding, wherein iron core
Cirque structure, the secondary winding are wound on the iron core.
The secondary winding is multigroup and is wound in respectively on multiple iron cores be arrangeding in parallel.
The utility model has the following advantages that and beneficial effect：
It is 1. the utility model small volume, simple in construction：A, B, C three-phase coil and zero sequence coil use polyurethane and silicon rubber
Compound inslation formula structure, the much room of conventional three single-phase current transformers and a zero sequence current mutual inductor is saved, produced
Product volume very little, the simpler saving of structure.
It is 2. the utility model easy-to-connect, flexible for installation：Specially designed secondary lead wires and switch internal shield wire casing can be with
Smoothly transit combination, and wiring is more convenient；Four embedded nuts equidistantly distributed, realize four mounting holes with switch internal
Fixed installation is accurately positioned, is installed very convenient flexible.
3. the utility model perfect performance, insulation are reliable：Three monophase current coils are equidistant to be sleeved in zero sequence coil
Portion, make product while realize the function of individual phase measurement and three-phase zero sequence relay protection, performance is more improved reliably, overall to use silicon
Rubber-covered forms, and good sealed insulation ensure that product insulation is very reliable, ensure outdoor use, effective hydrophobicity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is Fig. 1 left view；
Fig. 3 is Fig. 1 top view.
In figure：1 is iron core, and 2 be secondary winding, and 3 be A phase coils, and 4 be B phase coils, and 5 be C phase coils, and 6 be zero sequence line
Circle, 7 be secondary lead wires, and 8 be pilot protection pipe, and 9 be silicon rubber protective sleeve, and 10 be polyurethane insulation, and 11 be bus hole, and 12 are
Phase full skirt, 13 be end full skirt, and 14 be insulated column, and 15 be insulated column full skirt, and 16 be boss.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in detail example.
As Figure 1-3, a kind of outdoor pole top switch three-phase current combination transformer provided by the utility model, including it is multiple
Close insulator and the A phase coils 3, B phase coils 4, C phase coils 5 and the zero sequence coil 6 that are packaged in compound inslation body, wherein A phase lines
Circle 3, B phase coils 4 and C phase coils 5 are arranged at intervals successively, and the closed assembly of zero sequence coil 6 is in A phase coils 3, B phase coils 4 and C phase coils 5
On, the outside of composite insulator it is corresponding with each phase coil be provided with three insulated columns 14, the two of A phase coils 3 and C phase coils 5
Secondary lead 7 is drawn by the insulated column 14 of both sides, and the secondary lead wires 7 of zero sequence coil 6 and B phase coils 4 are drawn by the insulated column 14 of centre
Go out.
The composite insulator includes polyurethane insulation 10 and is coated on the silicon rubber guarantor in the outside of polyurethane insulation 10
Sheath 9.
Further, composite insulator is oval pie structure.The composite insulator is corresponding with each phase coil
Side be provided with three boss 16, on each boss 16 and the opposite side of the composite insulator is respectively equipped with phase full skirt 12.It is described
Position of the outside of composite insulator between adjacent another phase coil is provided with end full skirt 13.Phase full skirt 12, end full skirt 13 are equal
Using silicone rubber material.
Further, the end of insulated column 14 is provided with pilot protection pipe 8, and the end of pilot protection pipe 8 is bending structure, and two
Secondary lead 7 is drawn in the bending structure by the end of pilot protection pipe 8.In an embodiment of the present utility model, pilot protection pipe 8 is adopted
With white steel pipe.Secondary lead wires 7 are located at a sidepiece of composite insulator, and this Position Design can smooth mistake with switch internal shield wire casing
Combination is crossed, the complicated processes for thoroughly solving the independently wiring of the need of original more transformers, facilitates secondary cable lead
Simultaneously and be advantageous to the processing of secondary insulating.
Further, multiple insulated column full skirts 15 are provided with along short transverse on the outer surface of insulated column 14.
The center of A phase coils 3, B phase coils 4 and C phase coils 5 is equipped with bus hole 11 and two neighboring bus hole 11
The distance between it is equal, and the three-phase high-voltage bus of its mutual distance and switch internal be equidistantly from, using installation when,
Bus hole 11 can be fitted close installation and insulated enclosure with the sleeve pipe of three-phase solid-sealed high voltage bus.
A phase coils 3, B phase coils 4 and the structure of C phase coils 5 are identical, including iron core 1 and secondary winding 2, wherein iron core 1
For cirque structure, secondary winding 2 is wound on iron core 1.
Further, secondary winding 2 is multigroup and is wound in respectively on multiple iron cores 1 be arrangeding in parallel.
The equidistant bottom for being sleeved on zero sequence coil 6 of A phase coils 3, B phase coils 4, C phase coils 5, makes product while realizes
Individual phase measurement and the function of three-phase zero sequence relay protection.
Manufacture craft process of the present utility model is：
Single phase winding is that secondary winding 2 is equably wound on the iron core 1 of circular ring type, then is insulated and padded coaming
Wrapping, three-phase single phase winding are equally completed successively；Zero sequence coil 6 is that secondary winding 2 is equably wound on oval ring-like iron core 1
On, then insulated and the wrapping of padded coaming；After four coils are respectively completed, insulating materials and binding material are wrapped up,
Formed with secondary lead wires 7, the coil device body of secondary coil (A phase coils 3, B phase coils 4, C phase coils 5 and zero sequence coil 6)；
When die-filling, phase coil is sleeved in silicon rubber protective sleeve 9, then zero sequence coil 6 is stacked in above each phase coil, handles zero well
The insulation of sequence coil 6 and each phase coil, is isolated, secondary lead wires 7 are drawn from white steel pipe, wherein zero sequence lead and B using cardboard
Phase terminal is drawn together, is insulated after adjusting distance with the solidification of embedding polyurethane, therewith as a composite insulator, is made product
The function of individual phase measurement and three-phase zero sequence relay protection is realized simultaneously, and conjunction insulator is oval pieshape.The utility model has
It is simple in construction, the characteristics of volume is smaller.The central distribution of three-phase coil has three equidistant circular bus holes 11, and its is mutual
The three-phase high-voltage bus of distance and switch internal be equidistantly from, using installation when, bus hole 11 can be with three-phase solid-sealed high pressure
The sleeve pipe of bus is fitted close installation and insulated enclosure；Secondary lead wires 7 are located at the side of composite insulator, this Position Design with
Switch internal shield wire casing can smoothly transit combination, thoroughly solve the cumbersome of the need of original more transformers independently wiring
Process, facilitate secondary cable lead simultaneously and be advantageous to the processing of secondary insulating.
When the utility model is installed and used, the outgoing line side in switch-box body, switch internal high voltage bus casing initially passes through
The circular busbar hole of product, then product is fixed on the positioning with the embedded nut of bottom surface, finally in box house according to setting
Meter requires to carry out secondary lead wires wiring, the convenient, flexible completion of the utility model installment work.
Outdoor pole top switch three-phase current combination transformer provided by the utility model is designed fully according to national standard
A kind of new product, using iron core is rolled, using electromagnetic conversion principle, enable secondary current reflected measurement primary current exactly
Situation of change, be transferred to secondary measurement and control device；Make product is directly supporting to be installed in intelligent subscriber demarcation switch,
Used as electric current, electric energy measurement and relay protection.
In summary, the utility model is formed using the insulation of embedding polyurethane, has small volume, simple in construction, wiring side
Just, flexible for installation, the features such as insulation is reliable, superior performance, solve original intelligent subscriber demarcation switch Current Transformer and deposit
Part it is more, installation is complicated, wiring is complicated, qualifying point the problems such as, so as to improve intelligent subscriber demarcation switch
Designing and manufacturing level.
Embodiment of the present utility model is the foregoing is only, is not intended to limit the scope of protection of the utility model.It is all
Made within spirit of the present utility model and principle any modification, equivalent substitution and improvements, extension etc., are all contained in this reality
With in new protection domain.
Claims (10)
1. a kind of outdoor pole top switch three-phase current combination transformer, it is characterised in that including composite insulator and be packaged in institute
State A phase coils (3), B phase coils (4), C phase coils (5) and the zero sequence coil (6) in compound inslation body, wherein A phase coils (3),
B phase coils (4) and C phase coils (5) are arranged at intervals successively, and zero sequence coil (6) closed assembly is in the A phase coils (3), B phase lines
Enclose on (4) and C phase coils (5), the outside of the composite insulator it is corresponding with each phase coil be provided with three insulated columns (14),
The secondary lead wires (7) of the A phase coils (3) and C phase coils (5) are drawn by the insulated column (14) of both sides, the zero sequence coil (6)
Drawn with the secondary lead wires (7) of B phase coils (4) by the insulated column (14) of centre.
2. outdoor pole top switch three-phase current combination transformer according to claim 1, it is characterised in that described compound exhausted
Edge body includes polyurethane insulation (10) and the silicon rubber protective sleeve (9) being coated on the outside of the polyurethane insulation (10).
3. outdoor pole top switch three-phase current combination transformer according to claim 2, it is characterised in that described compound exhausted
Edge body is oval pie structure.
4. outdoor pole top switch three-phase current combination transformer according to claim 1, it is characterised in that the insulated column
(14) end is provided with pilot protection pipe (8), and the end of the pilot protection pipe (8) is bending structure, the secondary lead wires (7)
Drawn in bending structure by pilot protection pipe (8) end.
5. outdoor pole top switch three-phase current combination transformer according to claim 1, it is characterised in that the insulated column
(14) multiple insulated column full skirts (15) are provided with along short transverse on outer surface.
6. outdoor pole top switch three-phase current combination transformer according to claim 1, it is characterised in that described compound exhausted
The side of the edge body position corresponding with each phase coil is provided with boss (16), on the boss (16) and the composite insulator
Opposite side is respectively equipped with phase full skirt (12).
7. outdoor pole top switch three-phase current combination transformer according to claim 6, it is characterised in that described compound exhausted
Position of the outside of edge body between adjacent another phase coil is provided with end full skirt (13).
8. outdoor pole top switch three-phase current combination transformer according to claim 1, it is characterised in that the A phase lines
The center of circle (3), B phase coils (4) and C phase coils (5) is equipped between bus hole (11) and two neighboring bus hole (11)
Distance it is equal.
9. outdoor pole top switch three-phase current combination transformer according to claim 1, it is characterised in that the A phase lines
It is identical to enclose (3), B phase coils (4) and C phase coils (5) structure, is including iron core (1) and secondary winding (2), wherein iron core (1)
Cirque structure, the secondary winding (2) are wound on the iron core (1).
10. outdoor pole top switch three-phase current combination transformer according to claim 9, it is characterised in that described secondary
Winding (2) is multigroup and is wound in respectively on multiple iron cores (1) be arrangeding in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976319.7U CN207068639U (en) | 2017-08-07 | 2017-08-07 | Outdoor pole top switch three-phase current combination transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976319.7U CN207068639U (en) | 2017-08-07 | 2017-08-07 | Outdoor pole top switch three-phase current combination transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207068639U true CN207068639U (en) | 2018-03-02 |
Family
ID=61520008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720976319.7U Active CN207068639U (en) | 2017-08-07 | 2017-08-07 | Outdoor pole top switch three-phase current combination transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207068639U (en) |
Cited By (1)
| 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 |
-
2017
- 2017-08-07 CN CN201720976319.7U patent/CN207068639U/en active Active
Cited By (1)
| 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 |
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