CN102208269A - Current transformer component for low electric currents - Google Patents
Current transformer component for low electric currents Download PDFInfo
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- CN102208269A CN102208269A CN 201110051805 CN201110051805A CN102208269A CN 102208269 A CN102208269 A CN 102208269A CN 201110051805 CN201110051805 CN 201110051805 CN 201110051805 A CN201110051805 A CN 201110051805A CN 102208269 A CN102208269 A CN 102208269A
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- current transformer
- copper cash
- coiling
- coil
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Abstract
The invention discloses a current transformer component for low electric currents. The current transformer component comprises a current transformer and a load loop connecting wire which passes through the current transformer, wherein the current transformer comprises a rectangular closed iron core and two coils which are respectively arranged at two opposite sides of the rectangular closed iron core; each coil is formed by a bobbin bracket sheathed on the iron core and a winding wound on the bobbin bracket; the load loop connecting wire comprises a winding copper wire, a fixed plate and a connecting plate; the winding copper wire is wound at the outer side of the winding of one of the coils; one end of the winding copper wire is connected with the fixed plate; the other end of the winding copper wire is connected with the connecting plate; both ends of the winding copper wire are respectively connected inside a load loop by the fixed plate and the connecting plate; and the wire diameter of the winding copper wire is larger than that of the winding. When the current transformer component is used in the loop with low currents, the current transformer component can be used for keeping the stability of the working performance of electricity and has the characteristic of simple structure.
Description
Technical field
The present invention relates to a kind of current transformer, particularly relate to a kind of Current Transformer Assembly that is used for little electric current.
Background technology
Current transformer is widely used in the electric power system; usually in order to guarantee the safety and economic operation of electric power system; must carry out monitoring and measuring to the ruuning situation of power equipment; but general measurement and protective device can not directly insert high-tension apparatus No. one time; and the big electric current scaling transformation of primary system need be become little electric current, to supply with measuring instrument and protective device.The current transformer equipment that comes to this, it is to utilize electromagnetic induction principle to change the device of current magnitude.Referring to Fig. 1 to shown in Figure 4, a kind of Current Transformer Assembly of prior art, it comprises current transformer 1 ' and the load circuit wiring of passing current transformer; The closed core 11 of current transformer 1 ' a comprise square shape ' and two coils 12 that are contained in two relative edges of square shape unshakable in one's determination respectively '; Iron core is to be stacked by the multi-disc silicon steel sheet to constitute; The drum stand 121 that coil 12 ' comprise is enclosed within on the iron core ' and be wrapped in the coiling 122 ' composition of drum stand; The load circuit wiring then by a loop copper coin 2 that passes the centre of square shape unshakable in one's determination ', a fixed head a 21 ' and joint cover 22 ' constitute; Loop copper coin 2 ' an end and fixed head 21 ' be connected, loop copper coin 2 ' the other end and joint cover 22 ' be connected, loop copper coin 2 ' two ends respectively by fixed head 21 ' and joint cover 22 ' be connected in the load circuit.Utilize electromagnetic induction principle, current transformer is responded to the electric current of the load circuit by the loop copper coin, and induction after-current instrument transformer is supplied with measuring instrument or protective device by the coil output signal.Existing this Current Transformer Assembly mainly is applicable to use in the load circuit of big electric current, when the electric current of load circuit hour because less relatively, will cause the drawback of the electricity work unstable properties of current transformer by the electric current of loop copper coin.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of Current Transformer Assembly that is used for little electric current is provided, by improvement to Current Transformer Assembly, make when this Current Transformer Assembly uses in the loop of little electric current, can keep electricity work stable performance, and have characteristic of simple structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Current Transformer Assembly that is used for little electric current comprises current transformer and the load circuit wiring of passing current transformer; This current transformer comprises closed core and two coils that are contained in two relative edges of square shape unshakable in one's determination respectively of a square shape; Coil is made up of with the coiling that is wrapped in drum stand the drum stand that is enclosed within on the iron core; This load circuit wiring is twined copper cash, a fixed head and a joint cover by one and is constituted; This winding copper cash is wrapped in the outside of the coiling of one of them coil, and an end of this winding copper cash is connected with fixed head, and the other end that twines copper cash is connected with joint cover, and the two ends of twining copper cash are connected in the load circuit by fixed head and joint cover respectively; This twines the line footpath of the line footpath of copper cash greater than coiling.
Described winding copper cash is the outside that multi-turn is wrapped in the coiling of described one of them coil.
Described winding copper cash is the outside that multi-turn is wrapped in the coiling of described one of them coil side by side.
One end of described joint cover is inserted in the centre of the square shape of current transformer, and this end of joint cover is connected with the other end that twines copper cash.
A kind of Current Transformer Assembly that is used for little electric current of the present invention, it is the winding copper cash that the loop copper coin of the load circuit wiring in original Current Transformer Assembly is changed into the outside of the coiling that is wrapped in one of them coil, like this, just make that the wiring that is connected in load circuit is not only the centre of passing the closed core of current transformer, but also surround the outside of the coiling of one of them coil, just increased the induction dynamics of current transformer greatly to the load circuit electric current, feasible load circuit to little electric current, still can realize responding to preferably, guarantee electric work stable performance.
The invention has the beneficial effects as follows, owing to adopted current transformer and the load circuit wiring of passing current transformer to constitute Current Transformer Assembly, and this current transformer comprises closed core and two coils that are contained in two relative edges of square shapes unshakable in one's determination respectively of a square shape; Coil is made up of with the coiling that is wrapped in drum stand the drum stand that is enclosed within on the iron core; This load circuit wiring is twined copper cash, a fixed head and a joint cover by one and is constituted; This winding copper cash is wrapped in the outside of the coiling of one of them coil, and an end of this winding copper cash is connected with fixed head, and the other end that twines copper cash is connected with joint cover, and the two ends of twining copper cash are connected in the load circuit by fixed head and joint cover respectively; This twines the line footpath of the line footpath of copper cash greater than coiling.This Current Transformer Assembly utilization surrounds the winding copper cash in the outside of the coiling of one of them coil, strengthen induction dynamics greatly to the load circuit electric current, make when this Current Transformer Assembly uses in the loop of little electric current, can keep electricity work stable performance, and have characteristic of simple structure.
Below in conjunction with drawings and Examples the present invention is described in further detail; But a kind of Current Transformer Assembly that is used for little electric current of the present invention is not limited to embodiment.
Description of drawings
Fig. 1 is the front view of the Current Transformer Assembly of prior art;
Fig. 2 is the left view of the Current Transformer Assembly of prior art;
Fig. 3 is the cutaway view along A-A line among Fig. 1;
Fig. 4 is the D structure schematic diagram of the Current Transformer Assembly of prior art;
Fig. 5 is a front view of the present invention;
Fig. 6 is a left view of the present invention;
Fig. 7 is a vertical view of the present invention;
Fig. 8 is the cutaway view along B-B line among Fig. 7;
Fig. 9 is a D structure schematic diagram of the present invention.
Embodiment
Embodiment, to shown in Figure 9, a kind of Current Transformer Assembly that is used for little electric current of the present invention comprises current transformer 1 and the load circuit wiring of passing current transformer referring to Fig. 5; This current transformer 1 comprises that the closed core 11 of a square shape and two are contained in two relative edges' of unshakable in one's determination 11 square shapes coil (being coil 12 and coil 13) respectively; Unshakable in one's determination 11 is to be stacked by the multi-disc silicon steel sheet to constitute; Coil 12 is made up of with the coiling 122 that is wrapped in drum stand 121 drum stand 121 that is enclosed within on the iron core, and coil 13 is made up of with the coiling 132 that is wrapped in drum stand 131 drum stand 131 that is enclosed within on the iron core; This load circuit wiring is twined copper cash 2, a fixed head 21 and a joint cover 22 by one and is constituted; This winding copper cash 2 is wrapped in the outside of the coiling of one of them coil, promptly be wrapped in the outside of the coiling 122 of coil 12, one end of this winding copper cash 2 is connected with fixed head 21, the other end that twines copper cash 2 is connected with joint cover 22, and the two ends of twining copper cash 2 are connected in the load circuit by fixed head 21 and joint cover 22 respectively; This twines the line footpath of the line footpath of copper cash 2 greater than coiling 122.
Described winding copper cash 2 is the outside that multi-turn is wrapped in the coiling 122 of described coil 12.
Described winding copper cash 2 is the outside that multi-turn is wrapped in the coiling 122 of described coil 12 side by side.
The centre that one end 221 of described joint cover 22 is inserted in the square shape of current transformer, this end 221 of joint cover is connected with the other end that twines copper cash 2.
A kind of Current Transformer Assembly that is used for little electric current of the present invention, it is the winding copper cash 2 that the loop copper coin of the load circuit wiring in original Current Transformer Assembly is changed into the outside of the coiling 122 that is wrapped in one of them coil (being coil 12), like this, just make that the wiring that is connected in load circuit is not only the centre of passing the closed core of current transformer, but also surround the outside of the coiling 122 of one of them coil (being coil 12), just increased the induction dynamics of current transformer greatly to the load circuit electric current, feasible load circuit to little electric current, still can realize responding to preferably, guarantee electric work stable performance.
The foregoing description only is used for further specifying a kind of Current Transformer Assembly that is used for little electric current of the present invention; but the present invention is not limited to embodiment; every foundation technical spirit of the present invention all falls in the protection range of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. a Current Transformer Assembly that is used for little electric current comprises current transformer and the load circuit wiring of passing current transformer; This current transformer comprises closed core and two coils that are contained in two relative edges of square shape unshakable in one's determination respectively of a square shape; Coil is made up of with the coiling that is wrapped in drum stand the drum stand that is enclosed within on the iron core; It is characterized in that: this load circuit wiring is twined copper cash, a fixed head and a joint cover by one and is constituted; This winding copper cash is wrapped in the outside of the coiling of one of them coil, and an end of this winding copper cash is connected with fixed head, and the other end that twines copper cash is connected with joint cover, and the two ends of twining copper cash are connected in the load circuit by fixed head and joint cover respectively; This twines the line footpath of the line footpath of copper cash greater than coiling.
2. the Current Transformer Assembly that is used for little electric current according to claim 1 is characterized in that: described winding copper cash is the outside that multi-turn is wrapped in the coiling of described one of them coil.
3. the Current Transformer Assembly that is used for little electric current according to claim 1 is characterized in that: described winding copper cash is the outside that multi-turn is wrapped in the coiling of described one of them coil side by side.
4. according to claim 1 or the 2 or 3 described Current Transformer Assemblies that are used for little electric current, it is characterized in that: an end of described joint cover is inserted in the centre of the square shape of current transformer, and this end of joint cover is connected with the other end that twines copper cash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110051805 CN102208269B (en) | 2011-03-03 | 2011-03-03 | Current transformer component for low electric currents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110051805 CN102208269B (en) | 2011-03-03 | 2011-03-03 | Current transformer component for low electric currents |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102208269A true CN102208269A (en) | 2011-10-05 |
| CN102208269B CN102208269B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110051805 Active CN102208269B (en) | 2011-03-03 | 2011-03-03 | Current transformer component for low electric currents |
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| CN (1) | CN102208269B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86204593U (en) * | 1986-07-09 | 1987-08-19 | 昆明市电动工具厂 | Core-separated current-transformer with bucking coil |
| WO1991019305A1 (en) * | 1990-06-01 | 1991-12-12 | Lk Lavspaending A/S | A method and a shield for shielding a current transformer as well as a current transformer including such a shield |
| CN1283795A (en) * | 1999-08-04 | 2001-02-14 | 施耐德电器工业公司 | Current sensor for electrical appts |
| EP1467213A2 (en) * | 1996-10-23 | 2004-10-13 | General Electric Company | Self-powered axial current sensor |
| CN201984951U (en) * | 2011-03-03 | 2011-09-21 | 厦门宏美电子有限公司 | Current transformer component for small current |
-
2011
- 2011-03-03 CN CN 201110051805 patent/CN102208269B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86204593U (en) * | 1986-07-09 | 1987-08-19 | 昆明市电动工具厂 | Core-separated current-transformer with bucking coil |
| WO1991019305A1 (en) * | 1990-06-01 | 1991-12-12 | Lk Lavspaending A/S | A method and a shield for shielding a current transformer as well as a current transformer including such a shield |
| EP1467213A2 (en) * | 1996-10-23 | 2004-10-13 | General Electric Company | Self-powered axial current sensor |
| CN1283795A (en) * | 1999-08-04 | 2001-02-14 | 施耐德电器工业公司 | Current sensor for electrical appts |
| CN201984951U (en) * | 2011-03-03 | 2011-09-21 | 厦门宏美电子有限公司 | Current transformer component for small current |
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| Publication number | Publication date |
|---|---|
| CN102208269B (en) | 2013-04-10 |
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Owner name: XIAMEN HONGFA ELECTRICAL SAFETY + CONTROLS CO., LT Free format text: FORMER NAME: XIAMEN HONGMEI ELECTRONIC CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Jimei North Industrial Zone, Xiamen city of Fujian province Donglin road 361000 No. 566 Patentee after: XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO., LTD. Address before: Jimei North Industrial Zone, Xiamen city of Fujian province Donglin road 361000 No. 566 Patentee before: Xiamen Hongmei Electronic Co., Ltd. |