CN201319312Y - Core-piercing current transformer with high precision - Google Patents
Core-piercing current transformer with high precision Download PDFInfo
- Publication number
- CN201319312Y CN201319312Y CNU2008201239132U CN200820123913U CN201319312Y CN 201319312 Y CN201319312 Y CN 201319312Y CN U2008201239132 U CNU2008201239132 U CN U2008201239132U CN 200820123913 U CN200820123913 U CN 200820123913U CN 201319312 Y CN201319312 Y CN 201319312Y
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- current transformer
- core
- iron core
- high accuracy
- secondary coil
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses a core-piercing current transformer with high precision. The current transformer comprises an iron core, a secondary coil and a casing, wherein, the secondary coil is evenly wound on the iron core; the iron core and the secondary coil are poured in the casing and form the main body of the transformer; and the iron core is made of ultra-amorphous alloy material. The core-piercing current transformer with high precision provided by the utility model applies the ultra-amorphous alloy technology into the manufacturing process of the iron core, ensures that the measurement precision of the transformer can achieve the metering level under the circumstance that the primary high voltage side just has one turn, and can enable the secondary equipment to be miniaturized when the measurement precision of the transformer is ensured.
Description
Technical field
The utility model relates to a kind of electric equipment, relates in particular to a kind of high accuracy core-theaded type current transformer.
Background technology
Current transformer is very important in an electric power system secondary device, and current transformer and transformer are very alike, and transformer is mainly used to the voltage of conversion line, and current transformer is mainly used to the electric current of conversion line.
In electric power system, according to the generating and the different situations of electricity consumption, the size of current on the circuit differs, and differs greatly, and what have has only several peaces, the but several Wan An greatly extremely that have.To directly measure these big and small electric currents, just need make and should be several peaces many ammeters different and other electric meters mutually according to the size of line current up to several Wan An.Will bring great difficulty to the instrument manufacturing like this.In addition, the circuit that has is a high pressure, and high pressure such as 220kV or 10kV power transmission and transformation line for example will be directly with the electric current on the electric instrument measurement high-tension line, and that is extremely dangerous, also is definitely unallowed.
If insert current transformer on the line, so just can be electric current big and small on the circuit, in different ratios, unification becomes the close electric current of size.As long as it is with a kind of electric meter of current specification, for example general electric current is the electric meter of 5A, just can pass through current transformer, little on the measurement circuitry to several peaces and big electric current to several Wan An.The basic structure and the transformer of current transformer are very alike simultaneously, and it also has two windings, and one is former limit winding or a winding; One is secondary winding or secondary winding.Between two windings insulation is arranged, make the isolation that electricity is arranged between two windings.Current transformer when operation a winding be connected on the circuit, secondary winding connects electric meter, therefore during the electric current on measuring high-tension line, although original edge voltage is very high, secondary voltage is but very low, operating personnel and instrument are all very safe.
This shows that current transformer can also play the effect of insulation blocking except electric current not of uniform size on the circuit being become a certain size electric current of being convenient to measure, to guarantee operating personnel's safety.
The traditional core-theaded type current transformer that is used at present, because the volume ratio of instrument transformer own is bigger, and centre bore not have to set the fixing device for installing that is complementary with the primary measured lead, need just can install by the installation auxiliary in use, both cost of idleness was not easy to again install.Now, when guaranteeing the mutual inductor measuring accuracy of measurement, can make secondary device reach the purpose of miniaturization again,, become instrument transformer manufacturer disruptive technology problem to be solved as industry development trend.
The utility model content
Technical problem to be solved in the utility model provides a kind of high accuracy core-theaded type current transformer, when guaranteeing the mutual inductor measuring accuracy of measurement, can make secondary device reach the purpose of miniaturization again.
In order to solve the problems of the technologies described above, the utility model provides a kind of high accuracy core-theaded type current transformer, comprise iron core and secondary coil, described secondary coil evenly is wound on the described iron core, described high accuracy core-theaded type current transformer also comprises shell, described iron core and secondary coil are cast in the described shell, constitute current transformer body, and described iron core are super amorphous alloy material.
Furthermore, described current transformer also comprises interior tight loop.
Furthermore, tight loop comprises three integrally formed Ω shape projectioies in described.
Furthermore, described iron core and secondary coil are cast in the described shell with epoxy resin mixed glue.
Furthermore, described shell is an insulating material.
Furthermore, described insulating material is plastics or rubber.
High accuracy core-theaded type current transformer provided by the utility model is applied to the manufacture process of iron core with super non-crystaline amorphous metal technology, has guaranteed a high-pressure side under the situation that 1 circle is only arranged, and certainty of measurement can reach the metering level.And described high accuracy core-theaded type current transformer has adopted the interior tight loop of the approximate Ω shape of the semi-circular hollow design of the Trinity, need not mounting bracket in use, and having avoided need be by the troublesome operation that auxiliary is installed in traditional instrument transformer use.
Description of drawings
Fig. 1 is the high accuracy core-theaded type current transformer structural representation of the utility model embodiment.
Fig. 2 is the structural representation of interior tight loop of the high accuracy core-theaded type current transformer of the utility model embodiment.
Fig. 3 is high accuracy core-theaded type current transformer casing that will the utility model embodiment shown in Figure 1 and structural representation after of the present utility model interior tight loop shown in Figure 2 combines.
Embodiment
Main thought of the present utility model is that a kind of high accuracy core-theaded type current transformer is set, mainly comprise iron core, secondary coil and shell, secondary coil evenly is wound on the iron core, and iron core and secondary coil constitute current transformer body with the epoxy resin mixed glue cast in the enclosure.Described iron core is super amorphous alloy material, make the high pressure primary side under the situation of punching 1 circle, the product of miniaturization still can satisfy the requirement of metering level, and the interior tight loop that the utility model adopted has the projection of the approximate Ω shape of semi-circular hollow design, guaranteed that the effect by frictional force is fixed on current transformer on the cable in the installation process, avoid traditional core-theaded type current transformer that the complicated processes of auxiliary need be installed, need not mounting bracket during use.
Below in conjunction with accompanying drawing preferred implementation of the present utility model is elaborated.
With reference to shown in Figure 1, be high accuracy core-theaded type current transformer structural representation of the present utility model.High accuracy core-theaded type current transformer of the present utility model comprises: iron core 10, secondary coil 11, shell 12.In Fig. 1, cut the A of portion open by one and can see iron core 10 and secondary coil 11.The only exemplary secondary coil 11 that shows among the figure, certainly, the version of secondary coil 11 and iron core 10 is not exceeded shown in scheming.
Described secondary coil 11 evenly is wound on the iron core 10, and described iron core 10 and described secondary coil 11 usefulness epoxy resin mixed glue are cast in the described shell 12, constitutes current transformer body, and described current transformer body comprises centre bore 13.Described shell 12 can adopt insulating material such as plastic casing or rubber to make; the utility model is not limited this; as long as can realize iron core 10 and secondary coil 11 are encapsulated; and the material of insulation property arranged; can be adopted by the utility model, all within protection range of the present utility model.
Described iron core 10 adopts super amorphous alloy material manufacturing to form, and makes the high pressure primary side under the situation of punching 1 circle, and the product of miniaturization still can satisfy the requirement of metering level.
Included centre bore 13 inboards of described high accuracy core-theaded type current transformer are provided with the interior tight loop 21 (shown in Figure 2) that is complementary with described centre bore 13.
With reference to shown in Figure 2, be the structural representation of the interior tight loop of the high accuracy core-theaded type current transformer of the utility model embodiment.In the present embodiment, tight loop 21 is set to Trinity Ω shape projection in described, be to comprise three integrally formed Ω shape projectioies 201 on the described interior tight loop 21, described Ω shape projection 201 comprises hollow bulb 202, described three Ω shape projectioies 201 are to the center of circle direction projection of the included centre bore 13 (shown in Figure 1) of current transformer, and whole interior tight loop 21 is provided with for sealing.Tight loop 21 can adopt rubber-like material such as rubber to make in described.
Certainly; during actual the use; interior tight loop 21 also can be set to other shape; such as in described centre bore 13, slot being set; the Plug Division that is complementary with described slot is set on interior tight loop 21; thereby tight loop 21 is pegged graft with centre bore 13 in realizing; this has just constituted additional embodiments of the present utility model; perhaps also can adopt clamping apparatus; tight loop 21 and centre bore 13 clampings in making; as long as can realize current transformer and cable under test close-fitting shape in addition can be adopted by the utility model, all within protection range of the present utility model.
With reference to shown in Figure 3, be high accuracy core-theaded type current transformer casing that will the utility model embodiment shown in Figure 1 and structural representation after of the present utility model interior tight loop shown in Figure 2 combines.
The interior tight loop 21 of present embodiment has adopted the projection of the approximate Ω shape with semi-circular hollow design, guaranteed that the effect by frictional force is fixed on current transformer on the cable in the installation process, make the current transformer of present embodiment need not mounting bracket in use, install simple, easy to maintenance.
High accuracy core-theaded type current transformer provided by the utility model, owing to adopted the iron core of super amorphous alloy material, make the high pressure primary side under the situation of punching 1 circle, the product of miniaturization still can satisfy the requirement of metering level, and owing to adopted the interior tight loop of the approximate Ω shape of the semi-circular hollow design of the Trinity, guaranteed that the effect by frictional force is fixed on current transformer on the cable in the installation process, made high accuracy core-theaded type current transformer of the present utility model need not mounting bracket in use.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with the people of this technology in the disclosed technical scope of the utility model; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (6)
1, a kind of high accuracy core-theaded type current transformer, comprise iron core and secondary coil, described secondary coil evenly is wound on the described iron core, it is characterized in that, described high accuracy core-theaded type current transformer also comprises shell, described iron core and secondary coil are cast in the described shell, constitute current transformer body, and described iron core are super amorphous alloy material.
2, high accuracy core-theaded type current transformer as claimed in claim 1 is characterized in that described current transformer also comprises interior tight loop.
3, high accuracy core-theaded type current transformer as claimed in claim 2 is characterized in that, described interior tight loop comprises three integrally formed Ω shape projectioies.
4, high accuracy core-theaded type current transformer as claimed in claim 1 is characterized in that described iron core and secondary coil are cast in the described shell with epoxy resin mixed glue.
5, high accuracy core-theaded type current transformer as claimed in claim 1 is characterized in that, described shell is an insulating material.
6, high accuracy core-theaded type current transformer as claimed in claim 5 is characterized in that, described insulating material is plastics or rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201239132U CN201319312Y (en) | 2008-11-25 | 2008-11-25 | Core-piercing current transformer with high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201239132U CN201319312Y (en) | 2008-11-25 | 2008-11-25 | Core-piercing current transformer with high precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201319312Y true CN201319312Y (en) | 2009-09-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201239132U Expired - Fee Related CN201319312Y (en) | 2008-11-25 | 2008-11-25 | Core-piercing current transformer with high precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201319312Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074334A (en) * | 2010-12-06 | 2011-05-25 | 保定天威集团有限公司 | Current transformer iron core |
| CN102969137A (en) * | 2012-11-23 | 2013-03-13 | 遵义长征电器开关设备有限责任公司 | High-precision and low-power current transformer for protecting electronic instrument and microcomputer |
| CN109411221A (en) * | 2018-12-10 | 2019-03-01 | 浙江诚富电器科技有限公司 | A kind of band self-test current transformer structure |
-
2008
- 2008-11-25 CN CNU2008201239132U patent/CN201319312Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074334A (en) * | 2010-12-06 | 2011-05-25 | 保定天威集团有限公司 | Current transformer iron core |
| CN102969137A (en) * | 2012-11-23 | 2013-03-13 | 遵义长征电器开关设备有限责任公司 | High-precision and low-power current transformer for protecting electronic instrument and microcomputer |
| CN109411221A (en) * | 2018-12-10 | 2019-03-01 | 浙江诚富电器科技有限公司 | A kind of band self-test current transformer structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING RICHANG-SCIENCE TRANSFORMER EQUIPMENT CO., Free format text: FORMER OWNER: BEIJING RICHENG SCIENCE EQUIPMENT CO., LTD. Effective date: 20111212 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100055 XUANWU, BEIJING TO: 101407 HUAIROU, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111212 Address after: 101407 Beijing city Huairou District Yanqi Economic Development Zone East Road No. 68 Yan two building 3 Patentee after: Beijing Ruiqien Transformer Equipment Co., Ltd. Address before: 100055, room 1, Hua Hua building, building 6, 516 street, South Street, Xuanwu District, Beijing Patentee before: Beijing Richeng Electric Equipment Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20121125 |