CN202929092U - High-precision Rogowski coil current transformer - Google Patents
High-precision Rogowski coil current transformer Download PDFInfo
- Publication number
- CN202929092U CN202929092U CN 201220693736 CN201220693736U CN202929092U CN 202929092 U CN202929092 U CN 202929092U CN 201220693736 CN201220693736 CN 201220693736 CN 201220693736 U CN201220693736 U CN 201220693736U CN 202929092 U CN202929092 U CN 202929092U
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- soft rod
- mutual inductor
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Abstract
The utility model discloses a high-precision Rogowski coil current transformer. A coil is composed of an insulating soft rod, a copper lead passing through the insulating soft rod, multiple turns of spiral coils uniformly wound on the insulating soft rod, an insulating layer, a shielding layer, an inner insulating protection layer, an outer insulating protection layer, a coil connector and a coil lead wire. Insulating connection protection is disposed between the outer insulating protection layer and the coil connector of the coil. One end of the copper lead is in series connection with one end of each of the multiple turns of coils, and the other end of the copper lead and the other extending end of each of the multiple turns of coils form a coil output lead wire. The advantages are that the novel current transformer based on the Rogowski coil principle is wide in application range, good in stability of output signals and high in linearity and precision, has a simple structure, is light, is convenient to mount and apply, and can be widely applied to the various test system fields of an electric power industry.
Description
Technical field
The utility model relates to electronic mutual inductor field, particularly a kind of high-precision rogowski coil current mutual inductor.
Background technology
Current transformer is the important component part of electric system, and the normal operation of electric system is played a very important role with precisely measuring.Along with the development of national economy, the continuous appearance of various power supply voltage levels improves constantly the measurement of electric system and protection accuracy requirement.
Traditional current transformer is owing to adopting ferromagnetic core, and when measuring a large amount of stream, the mutual inductor ferromagnetic core easily enters the magnetic saturation state, makes test data not accurate enough; The measurement frequency band is narrow, and frequency response is slow, is not suitable for Quick Measurement; Volume is large, the output terminal of Heavy Weight, current transformer can not be opened a way, project installation and use inconvenience.
The utility model content
The purpose of this utility model is to provide a kind of high-precision rogowski coil current mutual inductor that can overcome conventional current mutual inductor shortcoming.
The utility model solves the problems of the technologies described above with following technical scheme:
The utility model high-precision rogowski coil current mutual inductor, it connects protective seam 9 by coil 11, coil connector for dynamoelectric 8, insulation and coil output lead 10 consists of; Coil 11 is comprised of insulation soft excellent 2, copper conductor 1, uniform winding spiral multiturn coil 3, insulation course 4, screen layer 5, interior insulating protective layer 6, external insulation protective seam 7 on the soft rod of insulation that pass in the middle of the soft rod of insulation, insulation course 4 is set on multiturn coil 3, screen layer 5 is set on insulation course 4, interior insulating protective layer 6 is set on screen layer 5, on interior insulating protective layer 6, external insulation protective seam 7 is set; Insulation is set between the external insulation protective seam 7 of coil 11 and coil connector for dynamoelectric 8 is connected protective seam 9; One end of copper conductor 1 becomes to be connected in series with an end of multiturn coil 3, and the other end of the other end of copper conductor 1 and multiturn coil 3 stretches out and forms coil output lead 10.
The utility model high-precision rogowski coil current mutual inductor, the soft rod of described insulation are hollow soft plastic rod, and 0.5mm can be passed in its center
2Copper conductor, the soft excellent heatproof that insulate is up to 125 °.
The utility model high-precision rogowski coil current mutual inductor, the two ends of soft excellent 2, the insulation course 4 of described insulation, interior insulating protective layer 6, external insulation protective seam 7 can be placed in the coil connector for dynamoelectric housing; The secondary side signal output lead that described coil output lead 10 is coil.
The utility model high-precision rogowski coil current mutual inductor, described coil connector for dynamoelectric housing is the pluging connector housing, is convenient to connect make the elastic bayonet lock shape.
The utility model high-precision rogowski coil current mutual inductor, the metal sleeve that described screen layer 5 evenly is woven into for conductive wire.
The utlity model has following advantage:
With reference to the novel current transformer of Luo-coil principle, applied widely, current measuring range is 40A-2500A, the voltage signal of the 4mV-25mV that Luo-coil secondary side output simultaneously is corresponding; Coil rack adopts the soft rod of insulation, does not have the magnetic saturation phenomenon, and the measure linear degree is good, and good stability, the precision of output signal are high, measures frequency band wide; Simple in structure, lightweight, the convenient installation used, can be widely used in each test macro field of power industry, and be the best substitute products of conventional current mutual inductor.
Description of drawings
Fig. 1 is the overall appearance schematic diagram of the utility model Luo-coil current transformer.
Fig. 2 is the sectional view of Fig. 1 coil 11.
In figure: 1-copper conductor, the 2-soft rod that insulate, 3-multiturn coil, 4-insulation course, 5-screen layer, 6-interior insulating protective layer, 7-external insulation protective seam, 8-coil connector for dynamoelectric, 9-insulation connects protective seam, coil output lead 10, coil 11.
Embodiment
Below in conjunction with accompanying drawing, the utility model high-precision rogowski coil current mutual inductor is described further:
Figure 1 shows that the overall appearance schematic diagram of Luo-coil current transformer.The structural entity of Luo-coil current transformer connects protective seam 9 by coil 11, coil connector for dynamoelectric 8, insulation and coil output lead 10 consists of; Coil connector for dynamoelectric 8 can adopt pneumatics y type connector.
Figure 2 shows that the sectional view of coil 11; can observe directly coil from sectional drawing is comprised of insulation soft excellent 2, copper conductor 1, uniform winding spiral multiturn coil 3, insulation course 4, screen layer 5, interior insulating protective layer 6, outer external insulation protective seam 7 on the soft rod of insulation that pass in the middle of the soft rod of insulation; insulation course 4 is set on multiturn coil 3; screen layer 5 is set on insulation course 4; interior insulating protective layer 6 is set on screen layer 5, on interior insulating protective layer 6, external insulation protective seam 7 is set.As shown in Figure 1, be provided with insulation between the outermost external insulation protective seam 7 of coil 11 and coil connector for dynamoelectric 8 and be connected protective seam 9.One end of copper conductor 1 becomes to be connected in series with an end of multiturn coil 3, and the other end of the other end of copper conductor 1 and multiturn coil 3 stretches out and forms coil output lead 10.
Insulate soft excellent 2 for the hollow soft plastic of radius 5mm is excellent, 0.5mm can be passed in its center
2Copper conductor, the soft excellent heatproof that insulate is up to 125 °.Insulation course 4 is mainly loose yellow paint and epoxy resin, and it act as protection coil 3; Acting as of screen layer 5 prevents that space magnetic field is on the impact of Luo-coil current transformer measuring accuracy; The copper conductor 1 that passes in the middle of the soft rod of insulation is connected in series with 3 one-tenth of spiral fashion multiturn coils on being wrapped in the soft rod that insulate; Uniform winding spiral multiturn coil 3 on the soft rod of insulation adopts the 0.21mm2 copper conductor; Pass the middle copper conductor 1 of the soft rod of insulation and be 0.5mm
2Copper conductor.
The utility model high-precision rogowski coil current mutual inductor, the two ends of soft excellent 2, the insulation course 4 of described insulation, insulating protective layer 6, external insulation protective seam 7 can be placed in the housing of coil connector for dynamoelectric; The secondary side signal output lead that described coil output lead is coil.
The utility model high-precision rogowski coil current mutual inductor, the housing of described coil connector for dynamoelectric is the pluging connector housing, is convenient to connect make the elastic bayonet lock shape.
Claims (5)
1. a high-precision rogowski coil current mutual inductor, is characterized in that, it connects protective seam (9) by coil (11), coil connector for dynamoelectric (8), insulation and coil output lead (10) consists of; Coil (11) is comprised of insulation soft rod (2), the copper conductor (1), uniform winding spiral multiturn coil (3), insulation course (4), screen layer (5), interior insulating protective layer (6), the external insulation protective seam (7) on the soft rod of insulation that pass in the middle of the soft rod of insulation, insulation course (4) is set on multiturn coil (3), screen layer (5) is set on insulation course (4), interior insulating protective layer (6) is set on screen layer (5), external insulation protective seam (7) is set on interior insulating protective layer (6); Insulation is set between the external insulation protective seam (7) of coil (11) and coil connector for dynamoelectric (8) is connected protective seam (9); One end of copper conductor (1) becomes to be connected in series with an end of multiturn coil (3), and the other end of the other end of copper conductor (1) and multiturn coil (3) stretches out and forms coil output lead (10).
2. high-precision rogowski coil current mutual inductor according to claim 1, is characterized in that, the soft rod of described insulation (2) is hollow soft plastic rod.
3. high-precision rogowski coil current mutual inductor according to claim 1, it is characterized in that, the two ends of the soft rod of described insulation (2), insulation course (4), interior insulating protective layer (6), external insulation protective seam (7) can be placed in coil connector for dynamoelectric (8) housing; Described coil output lead (10) is the secondary side signal output lead of coil.
4. high-precision rogowski coil current mutual inductor according to claim 3, is characterized in that, described coil connector for dynamoelectric housing is the pluging connector housing, is convenient to connect make the elastic bayonet lock shape.
5. high-precision rogowski coil current mutual inductor according to claim 1, is characterized in that, the metal sleeve that described screen layer (5) evenly is woven into for conductive wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220693736 CN202929092U (en) | 2012-12-14 | 2012-12-14 | High-precision Rogowski coil current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220693736 CN202929092U (en) | 2012-12-14 | 2012-12-14 | High-precision Rogowski coil current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929092U true CN202929092U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220693736 Expired - Fee Related CN202929092U (en) | 2012-12-14 | 2012-12-14 | High-precision Rogowski coil current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202929092U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104284515A (en) * | 2013-07-11 | 2015-01-14 | 北京映翰通网络技术股份有限公司 | Designing method for magnetic-field-interference resistant multi-PCB closed Rogowski coil and implementation |
| CN104569761A (en) * | 2014-12-31 | 2015-04-29 | 国家电网公司 | Live detection sensor for partial discharge of overhead cable |
| CN106710776A (en) * | 2016-11-18 | 2017-05-24 | 国家电网公司 | Rogowski coil and electronic current transformer applying Rogowski coil |
| CN107478886A (en) * | 2017-08-07 | 2017-12-15 | 华北电力大学 | A kind of method of current sensor and its sensed current signal |
-
2012
- 2012-12-14 CN CN 201220693736 patent/CN202929092U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104284515A (en) * | 2013-07-11 | 2015-01-14 | 北京映翰通网络技术股份有限公司 | Designing method for magnetic-field-interference resistant multi-PCB closed Rogowski coil and implementation |
| CN104284515B (en) * | 2013-07-11 | 2017-04-19 | 北京映翰通网络技术股份有限公司 | Designing method for magnetic-field-interference resistant multi-PCB closed Rogowski coil and implementation |
| CN104569761A (en) * | 2014-12-31 | 2015-04-29 | 国家电网公司 | Live detection sensor for partial discharge of overhead cable |
| CN106710776A (en) * | 2016-11-18 | 2017-05-24 | 国家电网公司 | Rogowski coil and electronic current transformer applying Rogowski coil |
| CN107478886A (en) * | 2017-08-07 | 2017-12-15 | 华北电力大学 | A kind of method of current sensor and its sensed current signal |
| CN107478886B (en) * | 2017-08-07 | 2024-05-14 | 华北电力大学 | Current sensor and method for detecting current signal thereof |
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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: 20130508 Termination date: 20211214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |