CN202816569U - Current inducer - Google Patents
Current inducer Download PDFInfo
- Publication number
- CN202816569U CN202816569U CN 201220453145 CN201220453145U CN202816569U CN 202816569 U CN202816569 U CN 202816569U CN 201220453145 CN201220453145 CN 201220453145 CN 201220453145 U CN201220453145 U CN 201220453145U CN 202816569 U CN202816569 U CN 202816569U
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- iron core
- steel sheet
- silicon steel
- secondary winding
- microcrystalline
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Abstract
The utility model discloses a current inducer, belonging to the technical field of measurement, of which the aim is to improve the measuring precision of the electrical energy, reduce electric quantity loss and damage ratio; and the technical scheme is that the current inducer comprises a super micro-crystal iron core, a silicon steel sheet compensation iron core and a secondary winding, wherein the super micro-crystal iron core and the silicon steel sheet compensation iron core are both annular and coaxial with each other; one part of the secondary winding is only wound on the super micro-crystal iron core; and the remaining part of the secondary winding is simultaneously wound on the super micro-crystal iron core and the silicon steel sheet compensation iron core. The current inducer is additionally provided with the silicon steel sheet compensation iron core on the basis of the traditional current inducer; and because the silicon steel sheet iron core is not easy to saturate, the measuring precision of the current inducer is greatly improved under the overload state, thereby effectively reducing the electric quantity loss and damage ratio and enabling the charge of electric energy to be fairer.
Description
Technical field
The utility model relates to the high current transformer of a kind of measuring accuracy, can effectively reduce the electric weight leak rate, belongs to field of measuring technique.
Background technology
Decrease in order to reduce electricity, electric power meter generally adopts the microcrystalline iron core instrument transformer, and this is because the specific loss of microcrystalline iron core is significantly less than silicon steel sheet and has good excitation property and temperature stability.But the microcrystalline iron core instrument transformer exists easily saturated shortcoming of magnetic flux, in case the line load overrate 120%, iron core just enters the saturation region, the instrument transformer ratio increases, and causes measuring losing of electric weight, causes unnecessary loss to power department.Although core section is long-pending can be addressed this problem by increasing, and will inevitably cause like this increase of instrument transformer cost.Therefore, how under the prerequisite that does not increase the instrument transformer cost, effectively solve easily saturated problem of microcrystalline iron core instrument transformer, just become the present problem that faces of relevant technologies personnel.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of low cost of manufacture is provided and is difficult for saturated current transformer, to improve the measuring accuracy of electric energy, reduces the electric weight leak rate.
The alleged problem of the utility model realizes with following technical proposals:
A kind of current transformer, comprise microcrystalline iron core, silicon steel sheet compensation iron core and secondary winding in the formation, described microcrystalline iron core and silicon steel sheet compensation iron core is ring-type and the two is coaxial, only on microcrystalline iron core, remainder is simultaneously on microcrystalline iron core and silicon steel sheet compensation iron core for the part of described secondary winding.
Above-mentioned current transformer, the ratio of the cross-sectional area of described silicon steel sheet compensation iron core and microcrystalline iron core is 0.082～0.086.
Above-mentioned current transformer, described the secondary winding only part on the microcrystalline iron core are 0.35～0.38 with the ratio of the number of turn of the part on microcrystalline iron core and the silicon steel sheet compensation iron core simultaneously.
Above-mentioned current transformer, described silicon steel sheet compensation iron core sleeve is in the outside of microcrystalline iron core.
The utility model has been set up silicon steel sheet compensation iron core on the basis of conventional current instrument transformer, because silicon sheet core is difficult for saturated, greatly improved the measuring accuracy of current transformer under overload state, thereby effectively reduced the electric weight leak rate, made the charging of electric energy more fair.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the ratio of traditional microcrystalline iron core current transformer is with the curve of curent change;
Fig. 3 is that ratio of the present utility model is with the curve of curent change.
Each label is among the figure: 1, silicon steel sheet compensation iron core; 2, microcrystalline iron core; 3, secondary winding.
Embodiment
The utility model is straight-through current transformer, and winding is not set one time, and its iron core is comprised of two parts, and microcrystalline iron core 2 is main iron core, and silicon steel sheet compensation iron core 1 is enclosed within the outside of microcrystalline iron core 2.The part of secondary winding 3 is on microcrystalline iron core 2, and remainder is on microcrystalline iron core 2 and silicon steel sheet compensation iron core 1.With traditional contrast: tradition 150/5 super amorphous Current Mutual Inductance, its iron core weigh 270 grams, with 2 squares of enamelled wire coiling 29.8 circles, test the data that draw, and curve plotting is as shown in Figure 2; Do main iron core with super amorphous iron core 240 grams after improving, ZH-130 silicon steel sheet 20 grams are done the compensation iron core, and its compensation iron core is 8.5% of main iron core.Secondary winding around 8 circles, then, packages the compensation iron core again around 21.8 circles on main iron core.Ready-made like this current transformer, the data that draw of test, curve plotting is compared with Fig. 2 as shown in Figure 3, and the curve of Fig. 3 is more steady when little electric current and the large electric current of excess load, can guarantee that electric weight do not lose.
The utility model is applicable to exist simultaneously the high energy-consuming enterprises of excess load and underrun operating mode, and the electrical leakage quantity of its minimizing can reach 5% of total electric weight, for circuit or the enterprise of harmonic excess, falls that to decrease effect remarkable.
Claims (4)
1. current transformer, it is characterized in that, comprise microcrystalline iron core (2), silicon steel sheet compensation iron core (1) and secondary winding (3) in the formation, described microcrystalline iron core (2) and silicon steel sheet compensation iron core (1) is ring-type and the two is coaxial, only on microcrystalline iron core (2), remainder is simultaneously on microcrystalline iron core (2) and silicon steel sheet compensation iron core (1) for the part of described secondary winding (3).
2. described current transformer according to claim 1 is characterized in that, described silicon steel sheet compensation iron core (1) is 0.082～0.086 with the ratio of the cross-sectional area of microcrystalline iron core (2).
3. described current transformer according to claim 1 and 2, it is characterized in that described secondary winding (3) the only part on the microcrystalline iron core (2) is 0.35～0.38 with the ratio that compensates the number of turn of the part on the iron core (1) around microcrystalline iron core (2) and silicon steel sheet simultaneously.
4. described current transformer according to claim 3 is characterized in that, described silicon steel sheet compensation iron core (1) is enclosed within the outside of microcrystalline iron core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453145 CN202816569U (en) | 2012-09-07 | 2012-09-07 | Current inducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453145 CN202816569U (en) | 2012-09-07 | 2012-09-07 | Current inducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202816569U true CN202816569U (en) | 2013-03-20 |
Family
ID=47875414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220453145 Expired - Lifetime CN202816569U (en) | 2012-09-07 | 2012-09-07 | Current inducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202816569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800463A (en) * | 2012-09-07 | 2012-11-28 | 沧州供电公司 | Current transformer |
-
2012
- 2012-09-07 CN CN 201220453145 patent/CN202816569U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800463A (en) * | 2012-09-07 | 2012-11-28 | 沧州供电公司 | Current transformer |
| CN102800463B (en) * | 2012-09-07 | 2016-05-25 | 国家电网公司 | A kind of current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER NAME: CANGZHOU POWER SUPPLY BRANCH COMPANY, STATE GRID HEBEI ELECTRIC POWER COMPANY Owner name: CANGZHOU POWER SUPPLY BRANCH COMPANY, STATE GRID H Free format text: FORMER NAME: CANGZHOU POWER SUPPLY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 061001 No. 21 West Yongji Road, Hebei, Cangzhou Patentee after: STATE GRID HEBEI ELECTRIC POWER COMPANY, CANGZHOU BRANCH Patentee after: State Grid Corporation of China Patentee after: STATE GRID HEBEI ELECTRIC POWER Co. Address before: 061001 No. 21 West Yongji Road, Hebei, Cangzhou Patentee before: Cangzhou Power Supply Co. Patentee before: State Grid Corporation of China Patentee before: Hebei Electric Power Corp. |
|
| CP03 | Change of name, title or address |
Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Patentee after: State Grid Corporation of China Patentee after: STATE GRID HEBEI ELECTRIC POWER COMPANY, CANGZHOU BRANCH Patentee after: STATE GRID HEBEI ELECTRIC POWER Co. Address before: 061001 No. 21 West Yongji Road, Hebei, Cangzhou Patentee before: STATE GRID HEBEI ELECTRIC POWER COMPANY, CANGZHOU BRANCH Patentee before: State Grid Corporation of China Patentee before: STATE GRID HEBEI ELECTRIC POWER Co. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20160525 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20160525 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |