CN2705869Y - Voltage mutual inductor - Google Patents
Voltage mutual inductor Download PDFInfo
- Publication number
- CN2705869Y CN2705869Y CN 200420005224 CN200420005224U CN2705869Y CN 2705869 Y CN2705869 Y CN 2705869Y CN 200420005224 CN200420005224 CN 200420005224 CN 200420005224 U CN200420005224 U CN 200420005224U CN 2705869 Y CN2705869 Y CN 2705869Y
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- Prior art keywords
- winding
- coil rack
- utility
- iron core
- model
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- 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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Abstract
The utility model provides a kind of voltage transformer of being made up of iron core 7, winding 5, secondary winding 2 and insulating sleeve 1, an insulation epoxy glue 3.The utility model is poured into a mould its winding 5 and secondary winding 2 separately with insulation epoxy glue 3 respectively, and one time high-voltage connection adopts insulating sleeve 1 as its overcoat, and what iron core adopted is single-phase open side type structure.The utility model is simple in structure, easy for installation, has improved the partial discharge quantity performance, has prolonged the useful life of product simultaneously.
Description
Affiliated technical field
The utility model relates to the cast-type voltage transformer that a kind of combination transformer is used, and will once separately pour into a mould with secondary coil, has improved partial discharge quantity (key technical index) performance.
Background technology
At present, employed voltage transformer all is that its primary winding and secondary coil are poured into a mould together in the similar combination transformer, and its partial discharge quantity is bigger.What its iron core also all adopted is single-phase three pillar type, cause once going between and the iron yoke between creepage than apart from very short, too near because of iron core iron yoke from high-voltage connection, very easily cause iron core creepage to high-voltage connection, shortened the useful life of product greatly.The exterior insulation of its high-voltage connection end all is to adopt epoxy resin directly to pour into a mould, and the really up to the mark and shortage pliability of high-voltage connection very easily ruptures in the product assembling process and causes waste product.
Summary of the invention
In order to overcome the deficiency of existing similar voltage transformer (the above).A kind of voltage transformer that the utility model provides has not only improved the partial discharge quantity performance, and increased corresponding creepage ratio from.We adopt the overcoat of the good material of insulation, compressive resistance height, high resilience and pliability as high-voltage connection in addition, have avoided product a high-voltage connection fracture to occur in the process of installing, and have reduced the scrappage of finished product.
The technical scheme that its technical problem that solves the utility model adopts is: primary winding is on the epoxy cylinder skeleton, and one time high-voltage connection is applied mechanically silicone rubber tube outward.Primary winding is carried out vacuum pouring with epoxy resin separately.Secondary coil also is to adopt epoxy cylinder as its skeleton, the secondary coil winding directly is wound on its skeleton, then with the independent castable of secondary coil.Secondary coil is directly assigned in the secondary coil installing hole of once-cast body.Iron core adopts single-phase open side type structure, avoided iron core iron yoke to pass between the high-voltage connection, has alleviated iron core creepage to high-voltage connection to a certain extent.We have adopted two full skirts at the device body of once-cast body, to have increased the corresponding creepage distance that compares.What we adopted in the selection of lead-in wire overcoat is soft silicone rubber tube, has both made things convenient for installation, the wire breaking phenomenon of also having avoided product to cause owing to material is really up to the mark in the process of installing.
The beneficial effects of the utility model are: not only improved the partial discharge quantity performance, and increased corresponding creepagely than distance, prolonged life-span of product; Also avoid product a high-voltage connection fracture in installation process, to occur, reduced the scrappage of finished product.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Fig. 1 is a front view of the present utility model
Fig. 2 is an end view of the present utility model
As shown in Figure 1 and Figure 2, winding 5 and secondary winding 2 are sleeved on the iron core 7, and what iron core 7 adopted is single-phase open side type.The structure of a winding 5 adopts the form of primary winding skeleton 6, and one time high-voltage connection adopts silicone rubber tube 1 directly to be overlapped on the outer surface of a winding 5, again winding 5 usefulness epoxy resin mixed glue 3 is carried out vacuum pouring to reach the purpose of insulation protection.What the structure of secondary winding 2 adopted is the form of secondary coil skeleton 4, then it is poured into a mould separately with epoxy resin mixed glue 3, it is assigned into behind the castable in the secondary coil installing hole of once-cast body again, and then installs unshakable in one's determination 7.
Claims (3)
1. voltage transformer, comprise by iron core (7), a winding (5) and coil rack (6), secondary winding (2) and coil rack (4) and insulating sleeve (1), insulation epoxy glue (3) and forming, it is characterized in that: a winding (5), and is insulated epoxy glue (3) and wraps up fully as its skeleton by coil rack (6); Secondary winding (2), and is insulated material and wraps up fully as its skeleton by coil rack (4), a winding (5) outside, secondary winding (2) is at interior formation cover stack structure; The insulating sleeve of a high-voltage connection (1) adopts insulation, compressive resistance height, high resilience and the good material of pliability.
2. a voltage transformer as claimed in claim 1 is characterized in that: insulation, the high material of compressive resistance are adopted in coil rack (6), (4).
3. a voltage transformer as claimed in claim 1 is characterized in that: the surface of pour mass becomes full skirt shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420005224 CN2705869Y (en) | 2004-02-19 | 2004-02-19 | Voltage mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420005224 CN2705869Y (en) | 2004-02-19 | 2004-02-19 | Voltage mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2705869Y true CN2705869Y (en) | 2005-06-22 |
Family
ID=34848353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420005224 Expired - Fee Related CN2705869Y (en) | 2004-02-19 | 2004-02-19 | Voltage mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2705869Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543410A (en) * | 2012-02-16 | 2012-07-04 | 广东电网公司佛山供电局 | Cascade high-potential energy supply device |
-
2004
- 2004-02-19 CN CN 200420005224 patent/CN2705869Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543410A (en) * | 2012-02-16 | 2012-07-04 | 广东电网公司佛山供电局 | Cascade high-potential energy supply device |
| CN102543410B (en) * | 2012-02-16 | 2014-06-25 | 广东电网公司佛山供电局 | Cascade high-potential energy supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050622 Termination date: 20130219 |