CN202034227U - Open-type high-accuracy current transformer - Google Patents
Open-type high-accuracy current transformer Download PDFInfo
- Publication number
- CN202034227U CN202034227U CN2011200580511U CN201120058051U CN202034227U CN 202034227 U CN202034227 U CN 202034227U CN 2011200580511 U CN2011200580511 U CN 2011200580511U CN 201120058051 U CN201120058051 U CN 201120058051U CN 202034227 U CN202034227 U CN 202034227U
- Authority
- CN
- China
- Prior art keywords
- current transformer
- sections
- type high
- cores
- iron cores
- Prior art date
- 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 - Lifetime
Links
Images
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to an open-type high-accuracy current transformer which comprises an iron core and secondary windings, wherein two C-shaped iron cores of the iron core are mutually butted to form a closed magnetic circuit, the secondary windings are uniformly wound on the two C-shaped iron cores to form the state that same side ends of the two C-shaped iron cores are open while other ends are movably hinged. The secondary windings are uniformly wound on the two C-shaped iron cores, and then the C-shaped iron cores are respectively packaged and are hinged by a hinge device to form a complete return circuit in wiring manner, and the C-shaped iron cores are also connected by a fastening flange to form a current transformer body, so that the two C-shaped iron cores can be opened around the hinge device for measuring current or can be locked by the fastening flange. The open-type high-accuracy current transformer has compact structure, reasonable design, low manufacturing cost, is convenient to use, is safe and reliable, realizes large-capacity output and high accuracy and is applicable to the current measurement of distribution lines, transformers and electric equipments of 35kV or lower power systems.
Description
Technical field
The utility model relates to electromagnetic technology field, is a kind of open type high precision current transformer specifically, is used for the current measurement to 35kV and following electric power system distribution line, transformer and power consumption equipment.
Background technology
Existing open type high precision current transformer coiling mode is: secondary winding is concentrated be wound on the 40% iron core-closed arc length, cut behind the casting epoxy resin, two main parts of the Open Type Electric Current Mutual Inductor of cutting adopt plastics waistband or metal waistband that it is held tightly, the induced current that produces on secondary winding by electromagnetic induction detects, its shortcoming is: 1. coil winding is on 40% arc length of semicircle iron core, leakage reactance is bigger, in addition with cutting again behind the instrument transformer casting complete, the ERROR CONTROL of secondary coil depends on the empirical data that cut quality and the preceding secondary coil error of cast are adjusted fully, the open type high precision current transformer precision that this method is produced is not high, output capacity is low, and error is not easy control; 2. when using the open type high precision current transformer opening installation that plastics waistband and metal waistband hold tightly because instrument transformer is divided into two main parts, assembling, use, safeguard all inconvenient.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the utility model provides a kind of open type high precision current transformer, and this current transformer is simple in structure, reasonable in design, cost is low, volume is little, easy to use, safe and reliable, and the precision height, and output capacity is big.
The technical solution adopted in the utility model is: a kind of open type high precision current transformer, comprise iron core and secondary winding, iron core, be is characterized in that mutually to being connected into closed magnetic circuit by two C sections cores: on described two C sections cores evenly the coiling secondary winding make that two C sections cores are an end opening, the other end is movably hinged state.
Further, described two C sections cores are with semicircle insulation crust outward respectively, two C sections cores are distinguished embedding in two halves round insulation shell through epoxy resin or polyurethane, semicircle insulation crust is made by the flame-proof PVC material, the interface of two halves round insulation shell one side is movably hinged by hinge means and forms, and the opposite side interface of two halves round insulation shell is provided with clamp flange another interface connection with two shells.
Again further, the interstitial hole of the secondary lead of described two the arbitrary C sections of C sections core cores by the hinge means secondary lead that is connected to another C sections core forms complete secondary circuit.
After adopting above technical scheme, the beneficial effect that the utility model reaches is: two C sections cores are formed by complete circle iron core cutting, can guarantee two C sections core butt joint performances; The both sides interface of the two halves round insulation shell of instrument transformer is connected with clamp flange by hinge means respectively, when assembling instrument transformer integral body not separated, do not come off, easy to assembly, the operator can control the instrument transformer folding well, and is easy to use, safe; After instrument transformer is fastened on the cable, carry out fasteningly through clamp flange with bolt, make instrument transformer body locking more fastening, firm, the contact of two C sections cores is tightr, has improved the permeability of iron core; Secondary winding divides two halves to be wound on two C sections cores equably and to cross line by hinge means to become complete secondary circuit, can directly transformer error be adjusted to required accuracy class, effectively reduce leakage reactance, improves the output capacity and the accuracy class of instrument transformer.
Cross line by hinge means after the utility model adopts the even coiling secondary winding of two C sections cores to encapsulate respectively and be hinged to complete loops, and clamp flange is fastenedly connected formation current transformer main body, realize that two C sections cores are around hinge means unlatching measurement electric current or closed and locked by clamp flange, its compact conformation, reasonable in design, cost of manufacture is low, easy to use, safe and reliable, the current transformer output capacity is big, the precision height is applicable to the current measurement of 35kV and following electric power system distribution line, transformer and power consumption equipment.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: semicircle insulation crust 1,11, C sections core 2,21, first secondary winding 3, second secondary winding 31, hinge means 4, clamp flange 5,51, bolt 6.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Shown in Figure 1, a kind of open type high precision current transformer comprises semicircle insulation crust 1,11, C sections core 2,21, first secondary winding 3, second secondary winding 31, hinge means 4, clamp flange 5,51 and bolt 6.Two C sections cores 2,21 are formed hemisect by a complete circle iron core, and first secondary winding 3 and second secondary winding 31 of secondary winding are wound on respectively on the two C sections hearts 2,21 equably, carry out the error adjustment after coiling is finished; The two C sections hearts 2,21 that have a winding respectively through the epoxy resin embedding in the two halves round insulation shell of making by the flame-proof PVC material 1,11, two halves round insulation shell 1,11 connects by the hinge means 4 of shell one side interface, and by the realization of the rotating shaft in the middle of hinge means closure or openness, two halves round insulation shell 1,11 passes clamp flange 5,51 corresponding lockings by the clamp flange 5,51 of shell opposite side by bolt 6; Starting of first secondary winding 3 crossed line to the leading-out terminal of second secondary winding 31 as secondary winding by the centre bore of hinge means, the end of first secondary winding 3 is also crossed line to the starting or terminal linking to each other (according to around being exactly that the two halves secondary winding is connected into complete secondary winding loop to principle) of second secondary winding 31 and second secondary winding 31 by the centre bore of hinge means, and the end that second secondary winding 31 does not connect is another leading-out terminal of secondary winding.Principle according to subtractive polarity, draw a ground wire at the S2 leading-out terminal, after secondary winding is fixedly finished, use normal temperature epoxy resin or polyurethane embedding secondary winding, with body seal, the hinge means of shell one interface fixes, and can guarantee that two halves round insulation shell well links together, another interface of shell is locked by bolt by clamp flange then, unclamps bolt when assembling, working service and gets final product.
Claims (4)
1. open type high precision current transformer, comprise iron core and secondary winding, iron core, be is characterized in that mutually to being connected into closed magnetic circuit by two C sections cores: on described two C sections cores evenly the coiling secondary winding make that two C sections cores are an end opening, the other end is movably hinged state.
2. open type high precision current transformer according to claim 1, it is characterized in that: described two C sections cores are with semicircle insulation crust outward respectively, the interface of two halves round insulation shell one side is movably hinged by hinge means and forms, and the opposite side interface of two halves round insulation shell is provided with clamp flange another interface connection with two shells.
3. open type high precision current transformer according to claim 2 is characterized in that: the secondary lead that the interstitial hole of the secondary lead of described two the arbitrary C sections of C sections core cores by hinge means is connected to another C sections core forms complete secondary circuit.
4. open type high precision current transformer according to claim 2 is characterized in that: described two C sections cores are distinguished embedding in two halves round insulation shell through epoxy resin or polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200580511U CN202034227U (en) | 2011-03-08 | 2011-03-08 | Open-type high-accuracy current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200580511U CN202034227U (en) | 2011-03-08 | 2011-03-08 | Open-type high-accuracy current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034227U true CN202034227U (en) | 2011-11-09 |
Family
ID=44896516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200580511U Expired - Lifetime CN202034227U (en) | 2011-03-08 | 2011-03-08 | Open-type high-accuracy current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202034227U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177863A (en) * | 2013-04-18 | 2013-06-26 | 南京智达电气有限公司 | Current transformer with thermoplastic rubber and preparation method thereof |
| CN103592490A (en) * | 2013-10-21 | 2014-02-19 | 中国电力科学研究院 | High-accuracy electronic compensated current transformer |
| CN105785249A (en) * | 2016-05-13 | 2016-07-20 | 北京顺程高科技有限公司 | Electric railway flashover fault locator |
| CN106771468A (en) * | 2016-12-10 | 2017-05-31 | 国网浙江省电力公司湖州供电公司 | Residual current value collector |
| 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 |
| CN108594114A (en) * | 2018-05-25 | 2018-09-28 | 明阳智慧能源集团股份公司 | A kind of large size half-direct-drive wind driven generator shaft current measurement sensor |
| CN108761374A (en) * | 2018-07-03 | 2018-11-06 | 河南森源电气股份有限公司 | Zero sequence transformer semi-finished product error experiments supporting table |
| CN109166713A (en) * | 2018-07-23 | 2019-01-08 | 南京正方电气有限公司 | Split type current transformer |
| CN109406919A (en) * | 2018-12-29 | 2019-03-01 | 国网山东省电力公司泰安供电公司 | Line loss detection device and line loss detection system |
| CN110244102A (en) * | 2019-07-29 | 2019-09-17 | 广东电网有限责任公司 | A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system |
| CN110850142A (en) * | 2019-10-08 | 2020-02-28 | 福建和盛高科技产业有限公司 | Wireless open type current transformer based on ultra-low power consumption design and control method thereof |
| CN112992514A (en) * | 2019-12-02 | 2021-06-18 | 河南森源电气股份有限公司 | Open type zero sequence current transformer and manufacturing method thereof |
| CN114121437A (en) * | 2021-11-03 | 2022-03-01 | 国网山东省电力公司临沂供电公司 | Open-type current transformer |
-
2011
- 2011-03-08 CN CN2011200580511U patent/CN202034227U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177863A (en) * | 2013-04-18 | 2013-06-26 | 南京智达电气有限公司 | Current transformer with thermoplastic rubber and preparation method thereof |
| CN103592490A (en) * | 2013-10-21 | 2014-02-19 | 中国电力科学研究院 | High-accuracy electronic compensated current transformer |
| CN103592490B (en) * | 2013-10-21 | 2017-06-16 | 国家电网公司 | A kind of high accuracy electronic compensation type current transformer |
| CN105785249A (en) * | 2016-05-13 | 2016-07-20 | 北京顺程高科技有限公司 | Electric railway flashover fault locator |
| CN106771468A (en) * | 2016-12-10 | 2017-05-31 | 国网浙江省电力公司湖州供电公司 | Residual current value collector |
| 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 |
| CN108594114A (en) * | 2018-05-25 | 2018-09-28 | 明阳智慧能源集团股份公司 | A kind of large size half-direct-drive wind driven generator shaft current measurement sensor |
| CN108761374A (en) * | 2018-07-03 | 2018-11-06 | 河南森源电气股份有限公司 | Zero sequence transformer semi-finished product error experiments supporting table |
| CN109166713A (en) * | 2018-07-23 | 2019-01-08 | 南京正方电气有限公司 | Split type current transformer |
| CN109406919A (en) * | 2018-12-29 | 2019-03-01 | 国网山东省电力公司泰安供电公司 | Line loss detection device and line loss detection system |
| CN110244102A (en) * | 2019-07-29 | 2019-09-17 | 广东电网有限责任公司 | A kind of leakage current of an arrester on-line monitoring leakage current mutual inductor and on-line monitoring system |
| CN110850142A (en) * | 2019-10-08 | 2020-02-28 | 福建和盛高科技产业有限公司 | Wireless open type current transformer based on ultra-low power consumption design and control method thereof |
| CN112992514A (en) * | 2019-12-02 | 2021-06-18 | 河南森源电气股份有限公司 | Open type zero sequence current transformer and manufacturing method thereof |
| CN112992514B (en) * | 2019-12-02 | 2023-04-07 | 河南森源电气股份有限公司 | Open type zero sequence current transformer and manufacturing method thereof |
| CN114121437A (en) * | 2021-11-03 | 2022-03-01 | 国网山东省电力公司临沂供电公司 | Open-type current transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202034227U (en) | Open-type high-accuracy current transformer | |
| CN203774075U (en) | Welded power transformer of annular printed circuit board | |
| CN211426662U (en) | Current injection probe and system | |
| CN102368434A (en) | Open-type electronic current transformer | |
| CN110600292A (en) | Telescopic insulating bar of intelligence | |
| CN203536206U (en) | Adjustable loaded passive zero-flux single-turn core-through current transformer | |
| CN204669097U (en) | A kind of WSN bus temperature measurement node supply unit | |
| CN204558236U (en) | A kind of three-phase integrated zero sequence current mutual inductor | |
| CN206774387U (en) | The coil safeguard structure and its transformer of a kind of transformer | |
| CN207558601U (en) | A kind of current transformer with embedded anti-open circuit module | |
| CN201918253U (en) | Electric current mutual inductor | |
| CN106158343B (en) | The production method of Open Type Electric Current Mutual Inductor | |
| CN201126445Y (en) | High-voltage current transformer | |
| CN205959759U (en) | Electric current hoisting device and current transformer | |
| CN203165662U (en) | Current transformer with thermoplastic rubber | |
| CN202871547U (en) | Electronic current transformer for high voltage cubicle gas insulated switchgear in matching mode | |
| CN202102858U (en) | Full closed magnetic tank for reactor and transformer | |
| CN218274193U (en) | Dedicated little volume high parameter current transformer of state net integration | |
| CN204884843U (en) | Continuous wound core's electromagnetic type voltage transformer is not cut in area | |
| CN201478109U (en) | Zero-magneticflux small-current pincer-shaped mutual inductor | |
| CN210722707U (en) | Current input terminal structure of current transformer | |
| CN214753230U (en) | Mutual inductor shell and current mutual inductor | |
| CN201859765U (en) | Voltage transformer for handcart switchgear cabinet | |
| CN201868236U (en) | Integral three-phase voltage transformer | |
| CN221148782U (en) | Alternating current detection device for wind power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |
|
| CX01 | Expiry of patent term |