CN205452020U - Current mutual inductor - Google Patents
Current mutual inductor Download PDFInfo
- Publication number
- CN205452020U CN205452020U CN201620262130.7U CN201620262130U CN205452020U CN 205452020 U CN205452020 U CN 205452020U CN 201620262130 U CN201620262130 U CN 201620262130U CN 205452020 U CN205452020 U CN 205452020U
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Abstract
The utility model relates to a current mutual inductor, including the body, be packaged with primary winding and secondary winding in the body, the primary winding is and has the open -ended annular, and secondary winding overlap on the primary winding, and wherein, current mutual inductor still inserts including insulating, and insulating inserting sets up the opening part at the primary winding, and the insulating outer cladding of inserting has semiconducting paper, and the insulation is inserted and is made by epoxy. Utility model's advantage is: mix at near the pouring epoxy that can effectively avoid the primary winding opening part during body and glue the uneven condition emergence of thickness, and then showing and improved the utility model discloses the electric field evenly distributed between primary winding and the secondary winding can be realized promptly to current mutual inductor's electric property to greatly reduced the partial discharge level between primary winding and the secondary winding, guaranteed the utility model discloses current mutual inductor's life.
Description
Technical field
This utility model relates to current transformer field, specifically a kind of current transformer.
Background technology
The current transformer of LZZB7-35G type is widely used in the switch cubicle of 35KV electric pressure, is mainly used as electric energy measurement and protection.At present, existing ZZB7-35G type current transformer, as shown in Figure 1, including body 101, body 101 is formed through vacuum pouring by epoxy resin mixed glue, being packaged with winding 102 and the Secondary Winding 103 being wound on iron core in body 101, winding 102 is in having the annular of opening, and Secondary Winding 103 is enclosed within a winding 102.There is a weak point in the current transformer of said structure in actual application: due to one time, winding 102 exists an opening, that is there is space between two joints of a winding 102, hence in so that current transformer easily causes the epoxy resin mixed glue became uneven near winding 102 opening part when pouring into a mould body 101, thus it is not of uniform size to cause the insulation distance between a winding 102 and Secondary Winding 103, and then cause the electric field uneven distribution between a winding 102 and Secondary Winding 103, local discharging level is the highest, leverage the service life of current transformer.
Utility model content
The technical problems to be solved in the utility model is to provide the current transformer that a kind of local discharging level is low.
For solving above-mentioned technical problem, this utility model provides the current transformer of a kind of following structure: include body, basis is the most internal is packaged with a winding and Secondary Winding, winding is in the annular with opening, Secondary Winding is enclosed within a winding, wherein, current transformer also includes insulation insert, and insulation insert is arranged on the opening part of a winding.
Current transformer described in the utility model, wherein, insulation insert is arranged on the opening part of a winding and refers to, insulation insert left and right sides are circular arc, and the left and right sides of insulation insert are close on two medial walls of a winding opening bending part respectively, the upper surface of insulation insert is plane, and insulation insert upper surface be close to the extraction lower end of the guide rod face being connected to a winding opening part, the lower surface of insulation insert is plane, and the lower surface of insulation insert flushes with the medial wall of lateral part, winding opening part both sides.
Current transformer described in the utility model, wherein, insulation insert is coated with semiconducting paper.
Current transformer described in the utility model, wherein, insulation insert is made up of epoxy resin.
After using said structure, compared with prior art, this utility model have the advantage that insulation insert the gap that can fill up a winding opening part is set, so that the situation that this utility model current transformer can be prevented effectively from epoxy resin mixed glue became uneven near a winding opening part when pouring into a mould body occurs, and then significantly improve the electric property of this utility model current transformer, i.e. it is capable of an electric fields uniform distribution between winding and Secondary Winding, thus greatly reduce a local discharging level between winding and Secondary Winding, ensure that the service life of this utility model current transformer.
Insulation insert outer cladding semiconducting paper can improve an Electric Field Distribution between winding and Secondary Winding further, thus greatly reduces a local discharging level between winding and Secondary Winding, it is ensured that the service life of this utility model current transformer.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of prior art current transformer；
Fig. 2 is the sectional structure schematic diagram of this utility model current transformer.
Detailed description of the invention
With detailed description of the invention, this utility model current transformer is described in further detail below in conjunction with the accompanying drawings.
nullAs shown in Figure 2，This utility model current transformer includes body 1，Body 1 is formed through vacuum pouring by epoxy resin mixed glue，It is packaged with a winding 2 in body 1 and is wound on the Secondary Winding 3 of (not shown) unshakable in one's determination，One time winding 2 is made up of copper belt，Winding 2 is in the annular with opening，Secondary Winding 3 is enclosed within a winding 2，Current transformer also includes insulation insert 4，Insulation insert 4 is arranged on the opening part of a winding 2，I.e. insulation insert 4 left and right sides are circular arc，And the left and right sides of insulation insert 4 are close on two medial walls of a winding 2 opening bending part respectively，The upper surface of insulation insert 4 is plane，And insulation insert 4 upper surface be close to extraction guide rod 6 lower surface being connected to winding 2 opening part，The lower surface of insulation insert 4 is plane，And the lower surface of insulation insert 4 flushes with the medial wall of lateral part, winding 2 opening part both sides，Insulation insert 4 is coated with semiconducting paper 5，Insulation insert 4 is made up of epoxy resin，The appearance of insulation insert 4 can carry out sandblasting sanding process，Thus can be easy to the fixing of semiconducting paper 5，To prevent semiconducting paper 5 opposing insulation insert 4 from sliding.
Above embodiment is only to be described preferred implementation of the present utility model; not scope of the present utility model is defined; on the premise of without departing from this utility model design spirit; various deformation that the technical solution of the utility model is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that this utility model claims determine.
Claims (4)
1. a current transformer, including body (1), a winding (2) and Secondary Winding (3) it is packaged with in described body (1), a described winding (2) is in the annular with opening, described Secondary Winding (3) is enclosed within a winding (2), it is characterized in that: described current transformer also includes insulation insert (4), and described insulation insert (4) is arranged on the opening part of a winding (2).
Current transformer the most according to claim 1, it is characterized in that: the opening part that described insulation insert (4) is arranged on a winding (2) refers to, described insulation insert (4) left and right sides are circular arc, and the left and right sides of insulation insert (4) are close on two medial walls of winding (2) opening bending part respectively, the upper surface of described insulation insert (4) is plane, and insulation insert (4) upper surface be close to extraction guide rod (6) lower surface being connected to winding (2) opening part, the lower surface of described insulation insert (4) is plane, and the lower surface of insulation insert (4) flushes with the medial wall of lateral part, winding (2) opening part both sides.
Current transformer the most according to claim 1 and 2, it is characterised in that: described insulation insert (4) is coated with semiconducting paper (5).
Current transformer the most according to claim 1 and 2, it is characterised in that: described insulation insert (4) is made up of epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262130.7U CN205452020U (en) | 2016-03-31 | 2016-03-31 | Current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620262130.7U CN205452020U (en) | 2016-03-31 | 2016-03-31 | Current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205452020U true CN205452020U (en) | 2016-08-10 |
Family
ID=56609146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620262130.7U Expired - Fee Related CN205452020U (en) | 2016-03-31 | 2016-03-31 | Current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205452020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922747A (en) * | 2018-07-17 | 2018-11-30 | 河南森源电气股份有限公司 | Current transformer |
-
2016
- 2016-03-31 CN CN201620262130.7U patent/CN205452020U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922747A (en) * | 2018-07-17 | 2018-11-30 | 河南森源电气股份有限公司 | Current transformer |
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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 |
Granted publication date: 20160810 Termination date: 20200331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |