CN2577421Y - Dry current transformer - Google Patents
Dry current transformer Download PDFInfo
- Publication number
- CN2577421Y CN2577421Y CN 02280899 CN02280899U CN2577421Y CN 2577421 Y CN2577421 Y CN 2577421Y CN 02280899 CN02280899 CN 02280899 CN 02280899 U CN02280899 U CN 02280899U CN 2577421 Y CN2577421 Y CN 2577421Y
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- Prior art keywords
- insulating
- utility
- model
- current transformer
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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.)
- Expired - Fee Related
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Abstract
The utility model discloses a dry current transformer. The utility model is characterized in that both sides of a metallic outer casing are respectively provided with an insulating plate; a plurality of groups of detachable secondary windings which are filled with insulating substances are arranged between the metallic outer casing and the insulating plates; an insulating cylinder core passes through the metallic outer casing and is composed of a plurality of groups of insulating casing tubes which are supported by bar stays between. The utility model is insulated by adopting the insulating cylinder core; due to the interspaces left between the insulating casing tubes, the utility model has the advantages of good radiation effect and prolonged service life; the damage of a group of winding can not cause the failure of an integral product, which saves resources; the utility model also has other advantages, such as increased qualified rate of products in the production processes, and high safety.
Description
Technical field
The utility model relates to a kind of current transformer, relates in particular to a kind of removable dry-type current transformer.
Background technology
Known current transformer adopts secondary winding and poured with epoxy resin formula structure, and epoxy resin time cycle in the moulding by casting process is long, and energy consumption is big.The stress that produces when resin solidification is bigger, causes the product cracking, and the qualification rate of product is reduced.Because winding is sealed by epoxide-resin glue fully, its winding heat radiation difficulty, temperature easily raises, and anti-magnetic field energy power is poor.Current transformer mostly is 2 above windings, and the defective or punch through damage of one of them winding of the current transformer of this kind structure will cause scrapping of whole product, cause the wasting of resources.The epoxy resin natural aging time is shorter, and the insulate heat that cause inside punctures irrecoverable, and along with the time increases, accumulates, causes the product insulation damages, forces generator to be stopped transport and causes enormous economic loss.
The utility model content
Technical problem to be solved in the utility model provides a kind of dry-type current transformer, solves the problem that secondary winding and poured with epoxy resin one and secondary winding are subjected to external interference.
Be achieved in that in order to solve the problems of the technologies described above the utility model the metal shell both sides are provided with insulation board, be provided with some groups of dismountable secondary winding in the middle of metal shell and the insulation board, secondary winding is filled with megohmite insulant, the insulating cylinder core passes metal shell, the insulating cylinder core is made up of some groups of insulating sleeves, supports by stay between the insulating sleeve.
The utility model dry-type current transformer is an isolating construction, need not mould, has reduced cost.Adopt insulating cylinder core insulation good heat dissipation effect, improved useful life.Can not damage, and make whole product rejection, save resource because of one group of winding.Improved the qualification rate of product in production process.Safe and reliable, be beneficial to enforcement.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model dry-type current transformer.
Metal shell 1 among Fig. 1, secondary winding 2, insulating cylinder core 3, insulation outer tube 4, stay 5, insulating inner tube 6, junction block 7, insulation board 8, megohmite insulant 9.
Embodiment
Fig. 1 is a structural representation of the present utility model.Structure of the present utility model is: metal shell (1) both sides are provided with insulation board (8), metal shell (1) and the middle some groups of dismountable secondary winding (2) that are provided with of insulation board (8), secondary winding (2) is filled with megohmite insulant (9), insulating cylinder core (3) passes metal shell (1), insulating cylinder core (3) is made up of some groups of insulating sleeves, supports by stay (5) between the insulating sleeve.Metal shell (1) can be worker's shape and U-shaped.Secondary winding (2) can be 2 one 5 secondary winding (2).Insulating sleeve can be a double-layer structure, and the inside of the outer tube (4) that promptly insulate is provided with insulating inner tube (6), and by stay (5) stretching, so that inner and outer pipe is concentric, insulating sleeve can be the laminated epoxy glass-cloth pipe between insulation outer tube (4) and the insulating inner tube (6).Insulation board (8) can be phenolic board.Insulation board (8) is provided with junction block (7), and secondary lead wires links to each other with junction block (7).Be provided with megohmite insulant (9) between metal shell (1) and insulation board (8) and the secondary winding (2), megohmite insulant (9) can be insulating board.
Claims (5)
1. dry-type current transformer, it comprises secondary winding (2) and insulating barrier, it is characterized in that metal shell (1) both sides are provided with insulation board (8), metal shell (1) and the middle some groups of dismountable secondary winding (2) that are provided with of insulation board (8), insulating cylinder core (3) passes metal shell (1), insulating cylinder core (3) is made up of some groups of insulating sleeves, supports by stay (5) between the insulating sleeve.
2. according to the described dry-type current transformer of claim 1, it is characterized in that described metal shell (1) can be worker's shape and U-shaped.
3. according to the described dry-type current transformer of claim 1, it is characterized in that described insulating sleeve can be two groups.
4. according to the described dry-type current transformer of claim 1, it is characterized in that being provided with megohmite insulant (9) between described metal shell (1) and insulation board (8) and the secondary winding (2).
5. according to the described dry-type current transformer of claim 1, it is characterized in that described insulating cylinder core (3) can be for circular and square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02280899 CN2577421Y (en) | 2002-11-05 | 2002-11-05 | Dry current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02280899 CN2577421Y (en) | 2002-11-05 | 2002-11-05 | Dry current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2577421Y true CN2577421Y (en) | 2003-10-01 |
Family
ID=33743502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02280899 Expired - Fee Related CN2577421Y (en) | 2002-11-05 | 2002-11-05 | Dry current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2577421Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681260A (en) * | 2015-02-16 | 2015-06-03 | 华建电气有限公司 | Zero sequence mutual inductance structure of three-phase breaker |
| CN114050041A (en) * | 2021-11-17 | 2022-02-15 | 许昌许继软件技术有限公司 | High-voltage bushing integrated with low-power-consumption current transformer coil |
-
2002
- 2002-11-05 CN CN 02280899 patent/CN2577421Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681260A (en) * | 2015-02-16 | 2015-06-03 | 华建电气有限公司 | Zero sequence mutual inductance structure of three-phase breaker |
| CN114050041A (en) * | 2021-11-17 | 2022-02-15 | 许昌许继软件技术有限公司 | High-voltage bushing integrated with low-power-consumption current transformer coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |