CN202058571U - Zero-sequence current mutual inductor - Google Patents
Zero-sequence current mutual inductor Download PDFInfo
- Publication number
- CN202058571U CN202058571U CN2011201083910U CN201120108391U CN202058571U CN 202058571 U CN202058571 U CN 202058571U CN 2011201083910 U CN2011201083910 U CN 2011201083910U CN 201120108391 U CN201120108391 U CN 201120108391U CN 202058571 U CN202058571 U CN 202058571U
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- shielding layer
- mutual inductor
- sequence current
- current mutual
- internal
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Abstract
The utility model relates to a zero-sequence current mutual inductor, comprising an annular iron core and an annular insulating cover shell, wherein the iron core is coaxially arranged in the annular internal chamber of the cover shell; furthermore, an external shielding layer is sheathed on the external annular ring of the coil winding arranged on the external wall of the cover shell; an internal shielding layer is arranged in the internal annular ring of the coil winding arranged on the internal wall of the cover shell; simultaneously, side surface shielding plates are fixed on two end surfaces of the component that consists of the external shielding layer, the internal shielding layer and the cover shell respectively; and the external shielding layer and the internal shielding layer are annular parts that are formed by winding high magnetic permeability alloy sheets. The zero-sequence current mutual inductor has the advantages of having a simple structure and small volume, being manufactured conveniently and quickly, well improving the shielding performance of the zero-sequence current mutual inductor when being used for detecting leakage current, and having excellent balance characteristic and shielding performance and the like.
Description
Technical field
The utility model is specifically related to a kind of zero sequence current mutual inductor with good shielding properties.
Background technology
Existing zero sequence current mutual inductor adopts the structure that adds metallic shield at the magnetive cord coil up and down usually, and it is relatively simple for structure, and shield effectiveness is undesirable, can not stop the interference that external magnetic field causes.
The utility model content
The purpose of this utility model is to provide a kind of zero sequence current mutual inductor, and its shielding properties is good, is convenient to manipulate, thereby has overcome deficiency of the prior art.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of zero sequence current mutual inductor, it is characterized in that: it comprises annular core and annular insulation casing, described iron core is coaxial to be arranged in the annular cavity of case, and be arranged on sheathed outer shielding layer on the outer ring circle of the coil windings on the case outer wall, be provided with internal shield and be arranged in the interior annular ring of the coil windings on the encloser inner wall, simultaneously, also fixedly install the side barricade respectively on the both ends of the surface of the member of being made up of described outer shielding layer, internal shield and case, described outer shielding layer and internal shield all are the ring-shaped articles that rolled into by the hiperloy sheet.
As a kind of preferred implementation, described outer shielding layer and internal shield are respectively by insulating tape and the fixing bonding of case.
Further preferred, the described member of forming by described outer shielding layer, internal shield and case through the epoxy resin integral embedding in an insulation crust.
Described coil windings is to adopt the enamelled wire coiling to form, and described coil windings is electrically connected with external lead wire.
As a kind of preferred implementation, described side barricade is by the internal diameter of plural pieces internal diameter less than internal shield, and external diameter is formed greater than the annular hiperloy sheet of the external diameter of outer shielding layer, described side barricade and the coaxial setting of internal shield.
Described hiperloy sheet adopts silicon steel sheet.
Compared with prior art, advantage of the present utility model is: simple in structure, volume is little, easy to make and quick, shielding properties, equilibrium response and the excellent in shielding performance that can well promote zero sequence current mutual inductor when being used to detect leakage current.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model one preferred embodiment;
Fig. 2 is the structural representation of side barricade in the utility model one preferred embodiment;
Each assembly and Reference numeral thereof are respectively shown in the above figure: silicon steel sheet 1, silicon steel circle 2, iron core 3, plastics containment vessel 4, enamelled wire 5, insulating tape 6, side barricade 7.
Embodiment
Below in conjunction with an accompanying drawing and a preferred embodiment the technical solution of the utility model is described further.
Consult Fig. 1～2, this zero sequence current mutual inductor comprises annular core 3 and annular plastics case 4, described iron core 3 is coaxial to be arranged in the annular cavity of case 4, and be arranged on sheathed outer shielding layer 1 on the outer ring circle of the coil windings 5 on case 4 outer walls, be provided with internal shield 2 and be arranged in the interior annular ring of the coil windings 5 on case 4 inwalls, simultaneously, by described outer shielding layer 1, also fixedly install side barricade 7 respectively on the both ends of the surface of the member that internal shield 2 and case 4 are formed, described outer shielding layer 1 and internal shield 2 all are the ring-shaped articles that rolled into by the hiperloy sheet.
Preferably, outer shielding layer 1 and internal shield 2 are respectively by insulating tape 6 and case 4 fixing bondings.
Further, the member of being made up of outer shielding layer 1, internal shield 2 and case 4 can be through the epoxy resin integral embedding in a plastic casing.
Aforementioned hiperloy sheet adopts silicon steel sheet.
The assembly process of this zero sequence current mutual inductor is: conducting magnet core 3 is contained in the sizeable plastics protective case 4, on plastics protective case 4, wrap the enamelled wire 5 of the suitable number of turns, be wound into sizeable silicon steel circle (outer shielding layer 1 and internal shield 2) with the suitable silicon strip of width, silicon steel circle 2 is placed in the endoporus of instrument transformer, silicon steel sheet (outer shielding layer) 1 is set on the instrument transformer, and side barricade 7 is fixed on the instrument transformer two ends, make each parts tight bond with adhesive tape 6, instrument transformer is in the airtight fully silicon steel material environment, the enamelled wire of instrument transformer (coil windings) 5 is guided into the silicon steel sheet outside to link to each other with thick lead-in wire, the instrument transformer of handling through shielding construction is contained in the plastic casing, use the epoxy resin embedding, obtain finished product.
Action principle of the present utility model is: thereby 1, the operation principle of current transformer is to produce induced voltage by the magnetive cord induced field in coil, so external magnetic field directly influences transformer induced precision to the interference strength of instrument transformer; 2, the shielding construction of this instrument transformer can fundamentally solve the anti-interference problem of zero sequence current mutual inductor, improves the equilibrium response of instrument transformer, promotes the performance of product.
Claims (6)
1. one kind has zero sequence current mutual inductor, it is characterized in that: it comprises annular core (3) and annular insulation casing (4), described iron core (3) is coaxial to be arranged in the annular cavity of case (4), and be arranged on sheathed outer shielding layer (1) on the outer ring circle of the coil windings (5) on case (4) outer wall, be provided with internal shield (2) and be arranged in the interior annular ring of the coil windings (5) on case (4) inwall, simultaneously, by described outer shielding layer (1), also fixedly install side barricade (7) respectively on the both ends of the surface of the member that internal shield (2) and case (4) are formed, described outer shielding layer (1) and internal shield (2) all are the ring-shaped articles that rolled into by the hiperloy sheet.
2. zero sequence current mutual inductor according to claim 1 is characterized in that: described outer shielding layer (1) and internal shield (2) are respectively by the fixing bonding of insulating tape (6) and case (4).
3. zero sequence current mutual inductor according to claim 1 is characterized in that: the described member of forming by described outer shielding layer (1), internal shield (2) and case (4) through the epoxy resin integral embedding in an insulation crust.
4. zero sequence current mutual inductor according to claim 1 is characterized in that: described coil windings (5) is to adopt the enamelled wire coiling to form, and described coil windings is electrically connected with external lead wire.
5. zero sequence current mutual inductor according to claim 1, it is characterized in that: described side barricade (7) is by the internal diameter of plural pieces internal diameter less than internal shield (2), and external diameter is formed greater than the annular hiperloy sheet of the external diameter of outer shielding layer (1), described side barricade (7) and the coaxial setting of internal shield (2).
6. zero sequence current mutual inductor according to claim 1 or 5, it is characterized in that: described hiperloy sheet adopts silicon steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201083910U CN202058571U (en) | 2011-04-14 | 2011-04-14 | Zero-sequence current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201083910U CN202058571U (en) | 2011-04-14 | 2011-04-14 | Zero-sequence current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058571U true CN202058571U (en) | 2011-11-30 |
Family
ID=45018537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201083910U Expired - Fee Related CN202058571U (en) | 2011-04-14 | 2011-04-14 | Zero-sequence current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202058571U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107403683A (en) * | 2017-07-29 | 2017-11-28 | 国网江西省电力公司电力科学研究院 | A kind of retractable current transformer using grinding tooth shape open core |
| CN110739139A (en) * | 2018-07-18 | 2020-01-31 | 三星电机株式会社 | Coil component |
| CN111527413A (en) * | 2017-12-08 | 2020-08-11 | 莱姆国际股份有限公司 | Annular fluxgate current sensor |
| CN112103031A (en) * | 2020-09-07 | 2020-12-18 | 青岛鼎信通讯股份有限公司 | Winding full-encapsulation high-voltage high-frequency transformer applied to power electronic transformer |
-
2011
- 2011-04-14 CN CN2011201083910U patent/CN202058571U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107403683A (en) * | 2017-07-29 | 2017-11-28 | 国网江西省电力公司电力科学研究院 | A kind of retractable current transformer using grinding tooth shape open core |
| CN111527413A (en) * | 2017-12-08 | 2020-08-11 | 莱姆国际股份有限公司 | Annular fluxgate current sensor |
| CN110739139A (en) * | 2018-07-18 | 2020-01-31 | 三星电机株式会社 | Coil component |
| US11587722B2 (en) | 2018-07-18 | 2023-02-21 | Samsung Electro-Mechanics Co., Ltd. | Coil component |
| CN110739139B (en) * | 2018-07-18 | 2023-08-22 | 三星电机株式会社 | coil assembly |
| CN112103031A (en) * | 2020-09-07 | 2020-12-18 | 青岛鼎信通讯股份有限公司 | Winding full-encapsulation high-voltage high-frequency transformer applied to power electronic transformer |
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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: 20111130 Termination date: 20130414 |