CN204117823U - A kind of ring main unit dedicated potential transformer - Google Patents
A kind of ring main unit dedicated potential transformer Download PDFInfo
- Publication number
- CN204117823U CN204117823U CN201420415997.2U CN201420415997U CN204117823U CN 204117823 U CN204117823 U CN 204117823U CN 201420415997 U CN201420415997 U CN 201420415997U CN 204117823 U CN204117823 U CN 204117823U
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- CN
- China
- Prior art keywords
- phase
- cable plug
- phase cable
- instrument transformer
- primary winding
- Prior art date
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- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 22
- 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 description 7
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model proposes a kind of ring main unit dedicated potential transformer, form V/V formula connection by two groups of potential windings, one-body molded by poured with epoxy resin, there is volume little, easy for installation, the features such as capacity is large.By metallic shield net ground connection, security of operation, compact conformation, measure, easy to maintenance.
Description
Technical field
The utility model relates to power system device, specifically a kind of ring main unit dedicated potential transformer.
Background technology
Voltage transformer is the equipment as measuring voltage, electric energy in electric power system outdoor ring main unit, along with electric modernization development, ring main unit becomes ring network power supplying units and the terminal equipment of the departments such as urban industry park, residential quarter, commercial center, industrial and mining enterprises day by day, is the best equipment of power distribution, control and electic protection; Common voltage instrument transformer volume is large, does not have seal approach, installs complicated; What tradition ring main unit adopted is two voltage transformers, and composition v/v formula connection, volume is large, installs inconvenient.And sometimes need hotline maintenance and maintenance, human-body safety is not ensured.
Utility model content
The utility model proposes a kind of ring main unit dedicated potential transformer, voltage transformer volume in prior art is large, installation is inconvenient to solve, overhaul uneasy congruent problem.
The technical solution of the utility model is achieved in that
A kind of ring main unit dedicated potential transformer, comprise base plate, described base plate is provided with shell, and the top of a side of described shell is provided with A phase cable plug, B phase cable plug and C phase cable plug, the bottom of described side is provided with wiring terminal box, is provided with binding post in described wiring terminal box;
The AB phase instrument transformer and BC phase instrument transformer that are arranged side by side is provided with in described shell; Described AB phase instrument transformer comprises iron core, described iron core is wound with secondary coil, is wound with primary winding outside described secondary coil, be provided with insulating barrier between described secondary coil and primary winding, and described primary winding is coated with high pressure screen; Described BC phase instrument transformer structure is identical with described AB phase instrument transformer;
Described A phase cable plug, B phase cable plug and C phase cable plug are respectively provided with a set of cord set, and described cord set comprises the high-voltage connection terminal, fuse and the grading ring that are connected successively;
Between the grading ring that the primary winding of described AB phase instrument transformer is connected to described A phase cable plug and the grading ring of B phase cable plug, between the grading ring that the primary winding of described BC phase instrument transformer is connected to described B phase cable plug and the grading ring of C phase cable plug;
The secondary coil of described AB phase instrument transformer is connected with described binding post with the secondary coil of BC phase instrument transformer;
Be provided with metallic shield net outside described primary winding, described base plate is provided with ground connection inserts, and described metallic shield net is connected with described ground connection inserts;
Epoxy resin is cast with in described shell.
Further, described fuse is screw type fuse.
Further, described A phase cable plug, B phase cable plug and C phase cable plug are horizontal.
Further, described base plate is fixed with suspension bracket.
The beneficial effects of the utility model are:
Ring main unit dedicated potential transformer of the present utility model, forms V/V formula connection by two groups of potential windings, one-body molded by poured with epoxy resin, has volume little, easy for installation, the features such as capacity is large.By metallic shield net ground connection, security of operation, compact conformation, measure, easy to maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the Facad structure schematic diagram of the utility model embodiment;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is the right TV structure schematic diagram of Fig. 1;
Fig. 4 is the internal structure schematic diagram of Fig. 1.
In figure:
1, base plate; 2, shell; 3, A phase cable plug; 4, B phase cable plug; 5, C phase cable plug; 6, wiring terminal box; 7, binding post; 8, iron core; 9, secondary coil; 10, primary winding; 11, insulating barrier; 12, high pressure screen; 13, high-voltage connection terminal; 14, fuse; 15, grading ring; 16, metallic shield net; 17, ground connection inserts; 18, epoxy resin; 19, suspension bracket.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-Figure 4, ring main unit dedicated potential transformer in the present embodiment, comprise base plate 1, described base plate 1 is provided with shell 2, the top of a side of described shell 2 is provided with A phase cable plug 3, B phase cable plug 4 and C phase cable plug 5, the bottom of described side is provided with wiring terminal box 6, is provided with binding post 7 in described wiring terminal box 6.
The AB phase instrument transformer be arranged side by side and BC phase instrument transformer is provided with in described shell 2; Described AB phase instrument transformer comprises iron core 8, and described iron core 8 is wound with secondary coil 9, is wound with primary winding 10 outside described secondary coil 9, is provided with insulating barrier 11 between described secondary coil 9 and primary winding 10, and described primary winding 10 is coated with high pressure screen 12; Described BC phase instrument transformer structure is identical with described AB phase instrument transformer.
Described A phase cable plug 3, B phase cable plug 4 and C phase cable plug 5 are respectively provided with a set of cord set, and described cord set comprises the high-voltage connection terminal 13, fuse 14 and the grading ring 15 that are connected successively.
Between the grading ring 15 that the primary winding 10 of described AB phase instrument transformer is connected to described A phase cable plug 3 and the grading ring 15 of B phase cable plug 4, between the grading ring 15 that the primary winding 10 of described BC phase instrument transformer is connected to described B phase cable plug 4 and the grading ring 15 of C phase cable plug 5.
The secondary coil 9 of described AB phase instrument transformer is connected with described binding post 7 with the secondary coil 9 of BC phase instrument transformer.Be provided with metallic shield net 16 outside described primary winding 10, described base plate 1 is provided with ground connection inserts 17, and described metallic shield net 16 is connected with described ground connection inserts 17.Epoxy resin 18 is cast with in described shell 2.
In the present embodiment, described fuse 14 is screw type fuse 14.Described A phase cable plug 3, B phase cable plug 4 and C phase cable plug 5 are horizontal.Described base plate 1 is fixed with suspension bracket 19.
The present embodiment forms V/V formula connection by AB phase instrument transformer and BC phase instrument transformer two groups of potential windings, pours into a mould one-body molded, have volume little by epoxy resin 18, easy for installation, the features such as capacity is large.By metallic shield net 16 ground connection, security of operation, compact conformation, measure, easy to maintenance.Adopt the epoxy resin 18 of special proportioning to do interior insulation, effectively improve the resistance to low temperature of product, its instrument transformer A, B, C phase is respectively furnished with hard spiral formula fuse 14 1.Occur electric discharge at circuit, shorted to earth, when one time resonance occurs that imbalance of three-phase voltage one is dashed forward high mutually, the fuse of fuse 14 can fuse, thus protects instrument transformer body to be without prejudice better.This instrument transformer also can be furnished with 220V operating power, powers to operating system, thus instead of the function of piezoelectric transformer, decreases goods and materials cost.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a ring main unit dedicated potential transformer, it is characterized in that: comprise base plate, described base plate is provided with shell, the top of a side of described shell is provided with A phase cable plug, B phase cable plug and C phase cable plug, the bottom of described side is provided with wiring terminal box, is provided with binding post in described wiring terminal box;
The AB phase instrument transformer and BC phase instrument transformer that are arranged side by side is provided with in described shell; Described AB phase instrument transformer comprises iron core, described iron core is wound with secondary coil, is wound with primary winding outside described secondary coil, be provided with insulating barrier between described secondary coil and primary winding, and described primary winding is coated with high pressure screen; Described BC phase instrument transformer structure is identical with described AB phase instrument transformer;
Described A phase cable plug, B phase cable plug and C phase cable plug are respectively provided with a set of cord set, and described cord set comprises the high-voltage connection terminal, fuse and the grading ring that are connected successively;
Between the grading ring that the primary winding of described AB phase instrument transformer is connected to described A phase cable plug and the grading ring of B phase cable plug, between the grading ring that the primary winding of described BC phase instrument transformer is connected to described B phase cable plug and the grading ring of C phase cable plug;
The secondary coil of described AB phase instrument transformer is connected with described binding post with the secondary coil of BC phase instrument transformer;
Be provided with metallic shield net outside described primary winding, described base plate is provided with ground connection inserts, and described metallic shield net is connected with described ground connection inserts;
Epoxy resin is cast with in described shell.
2. a kind of ring main unit dedicated potential transformer as claimed in claim 1, is characterized in that: described fuse is screw type fuse.
3. a kind of ring main unit dedicated potential transformer as claimed in claim 1, is characterized in that: described A phase cable plug, B phase cable plug and C phase cable plug are horizontal.
4. a kind of ring main unit dedicated potential transformer as claimed in claim 1, is characterized in that: described base plate is fixed with suspension bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420415997.2U CN204117823U (en) | 2014-07-24 | 2014-07-24 | A kind of ring main unit dedicated potential transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420415997.2U CN204117823U (en) | 2014-07-24 | 2014-07-24 | A kind of ring main unit dedicated potential transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117823U true CN204117823U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420415997.2U Expired - Fee Related CN204117823U (en) | 2014-07-24 | 2014-07-24 | A kind of ring main unit dedicated potential transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204117823U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424813A (en) * | 2017-05-16 | 2017-12-01 | 大连第二互感器集团有限公司 | Solve the outer net cage of railway and become the voltage transformer and method for using voltage transformer shelf depreciation |
| CN111341524A (en) * | 2020-03-06 | 2020-06-26 | 广东得成科技有限公司 | Current transformer with high IP protection level |
| CN116525273A (en) * | 2023-06-14 | 2023-08-01 | 大连第二互感器集团有限公司 | Voltage transformer and voltage transformer manufacturing device and method |
-
2014
- 2014-07-24 CN CN201420415997.2U patent/CN204117823U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424813A (en) * | 2017-05-16 | 2017-12-01 | 大连第二互感器集团有限公司 | Solve the outer net cage of railway and become the voltage transformer and method for using voltage transformer shelf depreciation |
| CN111341524A (en) * | 2020-03-06 | 2020-06-26 | 广东得成科技有限公司 | Current transformer with high IP protection level |
| CN116525273A (en) * | 2023-06-14 | 2023-08-01 | 大连第二互感器集团有限公司 | Voltage transformer and voltage transformer manufacturing device and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20160724 |