CN204732282U - Three-phase integrated current transformer - Google Patents
Three-phase integrated current transformer Download PDFInfo
- Publication number
- CN204732282U CN204732282U CN201520463045.2U CN201520463045U CN204732282U CN 204732282 U CN204732282 U CN 204732282U CN 201520463045 U CN201520463045 U CN 201520463045U CN 204732282 U CN204732282 U CN 204732282U
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- CN
- China
- Prior art keywords
- binding post
- phase
- main body
- iron core
- 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 relates to a kind of three-phase integrated current transformer, comprise by housing and be cast in the main body that the epoxy resin in described housing forms, the A fixing by described poured with epoxy resin and insulate is provided with in described main body, B, C three-phase measures iron core, be wound on described A respectively, B, C three-phase measures the A on iron core, B, C three-phase secondary winding and by described A, B, C three-phase measures iron core around zero sequence secondary winding wherein, a limit of an end face of described main body is provided with the Staging structure of indent, the end face of described Staging structure is provided with by poured with epoxy resin mode consolidation multiple binding posts on the body, described main body fastens and has the binding post lid covering described Staging structure, described binding post lid to cover tightly on solid fastened by screw in described main body by binding post.The utility model structure is simple, and low cost of manufacture is easy to use, carries out A, B, C three-phase and zero sequence current measurement simultaneously.
Description
Technical field
The utility model relates to a kind of three-phase integrated current transformer.
Background technology
Existing current transformer is all adapted to single line, and the electric current measuring three-phase cable needs to arrange A, B, C tri-phase current mutual inductors and a zero sequence current mutual inductor respectively, thus not only increasing device cost, also increases in-site installation workload.
Utility model content
The purpose of this utility model is to provide a kind of three-phase integrated current transformer, and this current transformer can carry out A, B, C three-phase and zero sequence current measurement simultaneously.
The technical scheme that the utility model adopts: a kind of three-phase integrated current transformer, comprises primarily of housing and the main body being cast in the epoxy resin formation in described housing, is provided with the A being fixed by described poured with epoxy resin and insulated in described main body, B, C three-phase measures iron core, be wound on described A respectively, B, C three-phase measures the A on iron core, B, C three-phase secondary winding and by described A, B, C three-phase measures iron core around zero sequence secondary winding wherein, described A, B, C three-phase measure iron core be identical iron core and transversely arranged be a row, described A, B, C three-phase measure iron core all adopt be provided with center through hole annular measure iron core, described main body be provided with respectively with described A, B, C three-phase measures three cable hole corresponding to the center through hole of iron core, a limit of an end face of described main body is provided with the Staging structure of indent, the end face of described Staging structure is provided with by poured with epoxy resin mode consolidation multiple binding posts on the body, described binding post respectively with described A, B, C three-phase secondary winding and zero sequence secondary winding connect, described main body fastens and has the binding post lid covering described Staging structure, the cross section of described binding post lid is L-shaped, it is the interstar connection room for cabling and wiring in described binding post lid, described binding post is positioned at described interstar connection room, described binding post covers the opening being provided with threading, described binding post lid to cover tightly on solid fastened by screw in described main body by binding post, described main body is provided with the binding post lid clamp nut be cemented in by poured with epoxy resin mode on described epoxy resin, and described binding post lid holding screw is screwed on corresponding described binding post lid clamp nut.
The beneficial effects of the utility model: owing to being provided with A simultaneously, B, C three-phase annular measures iron core, and arrange and be wound on A respectively, B, C three-phase measures the A on iron core, B, C three-phase secondary winding and be wound on A, B, C three-phase measures the zero sequence secondary winding that iron core group is closed, phase current signal relevant to each phase cable respectively can be formed by Samsung secondary winding, zero sequence current signal can be obtained by zero sequence secondary winding, also can carry out the detection of each phase current and zero-sequence current thus respectively simultaneously, without the need to arranging each phase current mutual inductor and zero sequence current mutual inductor respectively, greatly simplifie checkout equipment, be very easy to field operation, the overall weight and the overall space that dramatically reduce instrument transformer take, and zero-sequence current and three-phase current come from identical measurement iron core, be conducive to mutual checking, be conducive to finding and eliminating accidental error and systematic error, owing to main body being provided with the binding post installation region of Staging, and be provided with binding post cover, be very easy to wiring and the line concentration of each signal cable thus, not only facilitate wiring operation, facilitate examination and maintenance, but also pair of wire connection terminals serves good protective effect, particularly out of doors under environment, be conducive to the infringement avoiding outside wind and weather to bring, because binding post and binding post lid clamp nut all adopt the mode of poured with epoxy resin and each measurement iron core and each secondary winding to be together cast on epoxy resin, be cemented in firmly after the epoxy resin is cured on epoxy resin, without the need to carrying out the installation of binding post and binding post lid clamp nut on housing separately, not only simplify Structure and energy, save production cost, but also binding post and binding post lid clamp nut are installed more firm, reliability is higher.
Accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present utility model;
Fig. 2 is mechanical realization schematic diagram of the present utility model;
Fig. 3 is the schematic diagram of mechanical realization in the utility model display interstar connection room.
Embodiment
See Fig. 1-3, the utility model provides a kind of three-phase integrated current transformer, it comprises primarily of housing 11 and the main body being cast in epoxy resin 12 formation in described housing, described housing should be with uncovered, an end face at least in the axial direction opens wide, to facilitate from this end face upper, after cast, the consolidation surface of epoxy resin in this face just constitutes the surface of main body corresponding site.According to installing the casting mold needing and coordinate, housing also can be provided with either large or small uncovered on other faces, uncoveredly can comprise whole, also part face can be comprised, such as, when the needs cast built-in fitting such as upper connecting terminal or related nut, housing at least should be arranged and can insert the uncovered of these parts, concrete set-up mode can according to prior art.The A fixing by described poured with epoxy resin and insulate is provided with in described main body, B, C three-phase measures iron core, be wound on A respectively, B, C three-phase measures the A on iron core, B, C three-phase secondary winding and by A, B, C three-phase measures iron core around zero sequence secondary winding wherein, described A, B, it is identical iron core (structure of iron core itself is identical with parameter) that C three-phase measures iron core, described A, B, C three-phase measures iron core transverse to being arranged as a row, described A, B, C three-phase is measured iron core and is annular measurement iron core, be provided with center through hole, described main body be provided with respectively with described A, B, C three-phase measures three cable hole 21 corresponding to the center through hole of iron core, 22, 23, the inwall of cable hole can be made up of housing, also the epoxy resin surface of solidification can be had to form.A limit of an end face (face on fore-and-aft direction is called end face) of described main body is provided with the Staging structure of indent, the end face of described Staging structure is provided with by poured with epoxy resin mode consolidation multiple binding posts on the body, by wiring fastening screw, 51 are screwed on corresponding binding post, just can the terminals of external cable be fixed on binding post, described binding post respectively with described A, B, C three-phase secondary winding and zero sequence secondary winding connect, for external coherent signal cable, to export corresponding induced signal, described main body fastens and has the binding post lid 40 covering described Staging structure, the cross section of described binding post lid is L-shaped, it is the interstar connection room (wiring space) 61 for cabling and wiring in described binding post lid, described binding post is positioned at described interstar connection room, described binding post covers the opening being provided with threading, described opening can be that complete hole or incomplete hole (or claim breach, the breach of preferred moon gate-shaped), described binding post lid to cover tightly on solid fastened by screw in described main body by binding post, described main body is provided with the binding post lid clamp nut be cemented in by poured with epoxy resin mode on described epoxy resin, described binding post lid holding screw is screwed on corresponding described binding post lid clamp nut.
Preferably, described measurement iron core adopts silicon steel sheet to make, to obtain high permeability.
Optionally, the opening part of described threading is provided with baffle plate 42,43, the periphery of described baffle plate and corresponding threading with opening periphery between adopt Mulit-point Connection mode to be connected, when dispatching from the factory, each opening all arranges corresponding baffle plate, according to threading needs during use, the baffle plate in respective openings is prized, expose opening and carry out threading, still with baffle plate on no opening, avoid thus making unnecessary opening open.
Preferably, described Staging structure is positioned on the base of described body front end face or rear end face (end face of casting epoxy resin is front end face).
Optionally, the opening of described threading is arranged on the bottom of described binding post lid.
Optionally, the opening of described threading is arranged on the one or both sides of described binding post lid.
Preferably, the bottom of described binding post lid and both sides are equipped with the opening of described threading, to select the threading position be suitable for neatly according to field condition.
Optionally, described main body is provided with the installing hole 31 parallel with described cable hole, can be used for in-site installation according to field condition.
Preferably, the quantity of described installing hole is two.
Optionally, the bottom of described main body is provided with mounting nuts 32, can be used for in-site installation according to field condition.
Preferably, the quantity of described mounting nuts is two.
Preferably, described main body is provided with the installing hole parallel with described cable hole, and meanwhile, the bottom of described main body is also provided with mounting nuts, according to the actual conditions at scene, can select the mounting means be suitable for neatly thus.
Preferably, described binding post lid holding screw is lead sealing bolt, and be provided with for the cross through hole through lead sealing line, described binding post covers the lead sealing ring being provided with and being positioned at binding post holding screw side.After installation and wiring, lead sealing line can be passed the hole of cross through hole on described binding post lid holding screw and described lead sealing ring, and be cemented on lead sealing beans, realize lead sealing thus.
Preferably, described cross through hole is positioned at the head of described binding post lid holding screw.
Preferably, described cross through hole is the rectangular opening (the upper and lower sidewall of rectangular opening is horizontal plane) of preferred horizontal, can avoid or alleviate the impact because arranging cross through hole pair of wire connection terminals lid holding screw intensity thus.
Each preferred and optional technological means disclosed in the utility model, unless otherwise indicated and one preferably or alternatives means be outside the further restriction of another technological means, all can combination in any, form some different technical schemes.
Claims (10)
1. a three-phase integrated current transformer, comprises primarily of housing and the main body being cast in the epoxy resin formation in described housing, is provided with the A being fixed by described poured with epoxy resin and insulated in described main body, B, C three-phase measures iron core, be wound on described A respectively, B, C three-phase measures the A on iron core, B, C three-phase secondary winding and by described A, B, C three-phase measures iron core around zero sequence secondary winding wherein, described A, B, C three-phase measure iron core be identical iron core and transversely arranged be a row, described A, B, C three-phase measure iron core all adopt be provided with center through hole annular measure iron core, described main body be provided with respectively with described A, B, C three-phase measures three cable hole corresponding to the center through hole of iron core, a limit of an end face of described main body is provided with the Staging structure of indent, the end face of described Staging structure is provided with by poured with epoxy resin mode consolidation multiple binding posts on the body, described binding post respectively with described A, B, C three-phase secondary winding and zero sequence secondary winding connect, described main body fastens and has the binding post lid covering described Staging structure, the cross section of described binding post lid is L-shaped, it is the interstar connection room for cabling and wiring in described binding post lid, described binding post is positioned at described interstar connection room, described binding post covers the opening being provided with threading, described binding post lid to cover tightly on solid fastened by screw in described main body by binding post, described main body is provided with the binding post lid clamp nut be cemented in by poured with epoxy resin mode on described epoxy resin, and described binding post lid holding screw is screwed on corresponding described binding post lid clamp nut.
2. three-phase integrated current transformer as claimed in claim 1, is characterized in that described measurement iron core adopts silicon steel sheet to make.
3. three-phase integrated current transformer as claimed in claim 1, is characterized in that described Staging structure is positioned on the base of described body front end face or rear end face.
4. three-phase integrated current transformer as claimed in claim 3, it is characterized in that the opening of described threading is arranged on the bottom of described binding post lid, or the opening of described threading is arranged on the one or both sides of described binding post lid, or the bottom of described binding post lid and both sides are equipped with the opening of described threading.
5. three-phase integrated current transformer as claimed in claim 3, is characterized in that described main body is provided with the installing hole parallel with described cable hole.
6. three-phase integrated current transformer as claimed in claim 5, is characterized in that the quantity of described installing hole is two.
7. three-phase integrated current transformer as claimed in claim 3, is characterized in that the bottom of described main body is provided with mounting nuts.
8. three-phase integrated current transformer as claimed in claim 7, is characterized in that the quantity of described mounting nuts is two.
9. three-phase integrated current transformer as claimed in claim 3, it is characterized in that described main body is provided with the installing hole parallel with described cable hole, the bottom of described main body is provided with mounting nuts.
10. the three-phase integrated current transformer as described in claim 1,2,3,4,5,6,7,8 or 9, it is characterized in that described binding post lid holding screw is lead sealing bolt, head is provided with for the cross through hole through lead sealing line, and described binding post covers the lead sealing ring being provided with and being positioned at binding post holding screw side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463045.2U CN204732282U (en) | 2015-07-01 | 2015-07-01 | Three-phase integrated current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463045.2U CN204732282U (en) | 2015-07-01 | 2015-07-01 | Three-phase integrated current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204732282U true CN204732282U (en) | 2015-10-28 |
Family
ID=54390616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520463045.2U Expired - Fee Related CN204732282U (en) | 2015-07-01 | 2015-07-01 | Three-phase integrated current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204732282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738683A (en) * | 2019-01-22 | 2019-05-10 | 广东航粤电气有限公司 | A kind of communication type current transformer of more open types |
-
2015
- 2015-07-01 CN CN201520463045.2U patent/CN204732282U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738683A (en) * | 2019-01-22 | 2019-05-10 | 广东航粤电气有限公司 | A kind of communication type current transformer of more open types |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180523 Address after: 065300 No. 3 Industrial Road, Chao Bai He industrial area, Dachang, Langfang, Hebei Patentee after: HENGYUAN LITONG ELECTRIC FACTORY CO.,LTD. Address before: 100094 room 619, block B, new materials and business building, 7 Fung Hui Road, Haidian District, Beijing. Patentee before: BEIJING HYLITON POWER TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |