CN204204623U - A kind of ring main unit current potential threephase potential transformer outwardly - Google Patents
A kind of ring main unit current potential threephase potential transformer outwardly Download PDFInfo
- Publication number
- CN204204623U CN204204623U CN201420634722.8U CN201420634722U CN204204623U CN 204204623 U CN204204623 U CN 204204623U CN 201420634722 U CN201420634722 U CN 201420634722U CN 204204623 U CN204204623 U CN 204204623U
- Authority
- CN
- China
- Prior art keywords
- potential
- epoxy resins
- insulation shell
- fuse
- threephase
- 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.)
- Expired - Fee Related
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
A kind of ring main unit current potential threephase potential transformer outwardly, comprises epoxy resins insulation shell, is integrally cast in iron core, coil in epoxy resins insulation shell, fuse, secondary terminal box.Described epoxy resins insulation shell is provided with threephase cable tubular body and elbow-type cable plug interface.Be respectively equipped with fuse bowl seat in described threephase cable tubular body, fuse bowl seat is all equipped with the fuse of high pressure.Epoxy resins insulation shell is also provided with earth potential connection inserting part, and coil outer is provided with earth potential gauze screen, and high pressure is connected with earth potential by earth potential gauze screen and earth potential connection inserting part by mutual inductor coil.Described epoxy resins insulation shell is provided with secondary terminal box, and secondary terminals outlet is located in secondary terminal box.The utility model secondary voltage fluctuates little and ensures that equipment is stablized, and overall for high voltage electric field current potential can be dropped to the same current potential with ground, achieve surface without high pressure, prevent again overcurrent from damaging instrument transformer, wiring reliably facilitates.
Description
Technical field
The utility model relates to voltage transformer technology, particularly relates to a kind of ring main unit current potential threephase potential transformer outwardly.
Background technology
For guaranteeing the reliability of powering, now the most frequently used scheme is exactly that looped network formula is powered, the ring main unit compact conformation of current employing, take up room little, builtin voltage instrument transformer does not connect by traditional approach, and overall for high voltage electric field current potential can not be ensured completely to drop to the same current potential with ground, realizes the effect of surface without high pressure, whole cabinet is generally all arranged on the closer position of distance personnel, has certain risk.This instrument transformer of present guarantee personal security is basic or blank at home.This type product high-voltage section adopts elbow-type cable plug formula joint, can reduce cabling space.Along with a large amount of of ring network power supply pattern popularize, to the Requirement Increases of this type instrument transformer.Addressing this problem must compact to voltage transformer requirement.
Utility model content
The technical problems to be solved in the utility model is, there is provided one can realize secondary voltage fluctuate little and ensure that equipment is stablized, overall for high voltage electric field current potential can be dropped to the same current potential with ground, realize surface without high pressure effect, prevent again overcurrent from damaging instrument transformer, wiring reliably ring main unit current potential threephase potential transformer outwardly easily.
The technical scheme adopted is
A kind of ring main unit current potential threephase potential transformer outwardly, comprises epoxy resins insulation shell, is integrally cast in iron core, coil in epoxy resins insulation shell, fuse, secondary terminal box.Described epoxy resins insulation shell is provided with threephase cable tubular body and elbow-type cable plug interface.Be respectively equipped with fuse bowl seat in described threephase cable tubular body, fuse bowl seat is all equipped with the fuse of high pressure.Epoxy resins insulation shell is also provided with earth potential connection inserting part, and coil outer is provided with earth potential gauze screen, and high pressure is connected with earth potential by earth potential gauze screen and earth potential connection inserting part by mutual inductor coil.Described epoxy resins insulation shell is provided with secondary terminal box, and secondary terminals outlet is located in secondary terminal box, and has stainless steel cover to seal.
In above-mentioned secondary terminal box, outlet device is equipped with stuffing box and fixes secondary wiring.
Above-mentioned iron core is R shaped iron core.
The beneficial effects of the utility model:
A. magnetic core adopts R shaped iron core, and system voltage change is within the scope of 80%-120%, and exciting current change is less than 3%, realizes secondary voltage and fluctuates little and ensure that equipment is stablized.
B. shielding process: two coil entirety are surrounded by the special gauze screen of one deck, drops to the same current potential with ground by overall for high voltage electric field current potential, realizes the effect of surface without high pressure.
C. primary winding has high voltage shield, secondary coil and employing bulk shielding technique unshakable in one's determination, ensure the magnetic field of two coils, be independent of each other.
D. once there is fuse to protect, prevent overcurrent from damaging instrument transformer.
E. high-pressure section wiring plug-in elbow-type cable plug, wiring reliably facilitates.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Embodiment
A kind of ring main unit current potential threephase potential transformer outwardly, comprises epoxy resins insulation shell 4, is integrally cast in R shaped iron core 3 in epoxy resins insulation shell, coil 2, fuse 1, secondary terminal box 6.Described epoxy resins insulation shell 4 is provided with threephase cable tubular body 8 and elbow-type cable plug interface 11, and its interface docks with elbow-type cable plug.Be respectively equipped with fuse bowl seat 10 in described threephase cable tubular body 8, fuse bowl seat 10 is all equipped with the fuse 1 of high pressure.Epoxy resins insulation shell 4 is also provided with earth potential connection inserting part 5, coil 2 outside is provided with earth potential gauze screen 9, high pressure is connected with earth potential by earth potential gauze screen 9 and earth potential connection inserting part 5 by mutual inductor coil, makes instrument transformer surface No leakage voltage, ensures personal security.Described epoxy resins insulation shell 4 is provided with secondary terminal box 6, secondary terminals outlet is located in secondary terminal box 6, and having stainless steel cover 7 to seal, in secondary terminal box 6, outlet device is equipped with stuffing box 12 and fixes secondary wiring, forms a kind of ring main unit current potential threephase potential transformer outwardly.
Claims (3)
1. ring main unit current potential threephase potential transformer outwardly, comprise epoxy resins insulation shell (4), integrally be cast in iron core (3) in epoxy resins insulation shell, coil (2), fuse (1), secondary terminal box (6), it is characterized in that described epoxy resins insulation shell (4) is provided with threephase cable tubular body (8) and elbow-type cable plug interface (11), fuse bowl seat (10) is respectively equipped with in described threephase cable tubular body (8), fuse bowl seat (10) is all equipped with fuse (1), epoxy resins insulation shell (4) is also provided with earth potential connection inserting part (5), coil (2) outside is provided with earth potential gauze screen (9), high pressure is connected with earth potential by earth potential gauze screen (9) and earth potential connection inserting part (5) by mutual inductor coil, described epoxy resins insulation shell (4) is provided with secondary terminal box (6), secondary terminals outlet is located in secondary terminal box (6), and have stainless steel cover (7) to seal.
2. a kind of ring main unit according to claim 1 current potential threephase potential transformer outwardly, is characterized in that the middle outlet device of described secondary terminal box (6) is equipped with stuffing box (12) and fixes secondary wiring.
3. a kind of ring main unit according to claim 1 current potential threephase potential transformer outwardly, is characterized in that described iron core (3) is R shaped iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420634722.8U CN204204623U (en) | 2014-10-30 | 2014-10-30 | A kind of ring main unit current potential threephase potential transformer outwardly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420634722.8U CN204204623U (en) | 2014-10-30 | 2014-10-30 | A kind of ring main unit current potential threephase potential transformer outwardly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204623U true CN204204623U (en) | 2015-03-11 |
Family
ID=52662554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420634722.8U Expired - Fee Related CN204204623U (en) | 2014-10-30 | 2014-10-30 | A kind of ring main unit current potential threephase potential transformer outwardly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204623U (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 |
| CN107887149A (en) * | 2017-12-08 | 2018-04-06 | 大连第二互感器集团有限公司 | A kind of ring main unit voltage transformer |
| CN115497731A (en) * | 2021-12-07 | 2022-12-20 | 西安高压电器研究院股份有限公司 | Current transformer and environment-friendly inflating cabinet |
-
2014
- 2014-10-30 CN CN201420634722.8U patent/CN204204623U/en not_active Expired - Fee Related
Cited By (4)
| 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 |
| CN107887149A (en) * | 2017-12-08 | 2018-04-06 | 大连第二互感器集团有限公司 | A kind of ring main unit voltage transformer |
| CN107887149B (en) * | 2017-12-08 | 2020-06-30 | 大连第二互感器集团有限公司 | Voltage transformer for ring main unit |
| CN115497731A (en) * | 2021-12-07 | 2022-12-20 | 西安高压电器研究院股份有限公司 | Current transformer and environment-friendly inflating cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204204623U (en) | A kind of ring main unit current potential threephase potential transformer outwardly | |
| CN103278737A (en) | Direct-current self-injection type small-current grounding and route selecting system and method | |
| CN207425577U (en) | A kind of voltage transformer | |
| CN102354598B (en) | Capacitive divider with medium voltage positioned at high-voltage side | |
| UA48914U (en) | Device for shutoff protection from the electric main | |
| CN104240930A (en) | Special three-phase voltage transformer with protective device for solid ring network cabinet | |
| CN103354160B (en) | A kind of high-voltage mutual inductor | |
| CN207925291U (en) | A kind of ring main unit 10kV miniaturization threephase potential transformers | |
| CN205582707U (en) | Can reduce partial discharge's single -phase voltage mutual -inductor | |
| CN205264483U (en) | External current transformer | |
| CN202585045U (en) | Electrical transformer with voltage measurement and protection function | |
| CN103354161B (en) | High-voltage mutual inductor | |
| CN205230796U (en) | Voltage transformer | |
| CN202127357U (en) | Adapter power source device | |
| CN204117837U (en) | A kind of solid loop-net cabinet dedicated three-phase voltage transformer with protective device | |
| CN205564484U (en) | Transformer high pressure device of being qualified for next round of competitions | |
| CN205376287U (en) | Tie up formula current transformer | |
| CN203787271U (en) | Soft connector mutual inductance device for low-voltage circuit breaker | |
| CN204332660U (en) | Ring main unit combination voltage instrument transformer | |
| CN203813218U (en) | Zero-line longitudinally arranged switch cabinet | |
| CN103956215A (en) | Shielding cable | |
| CN203894274U (en) | Transformer integrated testing case | |
| CN208367073U (en) | A kind of electromagnetic current transducer | |
| CN203882792U (en) | Single-phase voltage mutual inductor | |
| CN206758244U (en) | Power transformer |
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: 20150311 Termination date: 20171030 |