CN203338964U - High-precision small current transformer capable of avoiding strong-magnetism electricity theft - Google Patents
High-precision small current transformer capable of avoiding strong-magnetism electricity theft Download PDFInfo
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- CN203338964U CN203338964U CN2013204234625U CN201320423462U CN203338964U CN 203338964 U CN203338964 U CN 203338964U CN 2013204234625 U CN2013204234625 U CN 2013204234625U CN 201320423462 U CN201320423462 U CN 201320423462U CN 203338964 U CN203338964 U CN 203338964U
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- small current
- current transformer
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Abstract
A high-precision small current transformer capable of avoiding strong-magnetism electricity theft aims to solve the technical problem that an existing small current transformer can not effectively avoid strong-magnetism electricity theft conducted by lawbreakers. According to the technical scheme, the small current transformer comprises a primary lead and a secondary coil, the end portion of the primary lead is connected with a sheet-shaped wiring terminal, and the end portion of the secondary coil is connected with a secondary output lead. The high-precision small current transformer capable of avoiding strong-magnetism electricity theft is characterized in that the small current transformer further comprises an antimagnetic shell, the primary lead and the secondary coil are integrally encapsulated in the antimagnetic shell by virtue of potting material, and a sealing cover is arranged at the bottom of the antimagnetic shell. The high-precision small current transformer capable of avoiding strong-magnetism electricity theft has the technical advantages of being simple in structure, convenient to install, wire and manage, capable of effectively avoiding 300mT magnetic field electricity theft, capable of meeting the measurement precision requirements of the 0.02 level, the 0.05 level and the 0.1 level and convenient for the power management department to monitor and manage, reducing electric energy loss caused by illegal electricity usage of the lawbreakers and reducing economical losses of the nation.
Description
Technical field
The utility model belongs to the current measurement techniques field, relates to a kind of current transformer, particularly can prevent the high accuracy small current mutual inductor of strong magnetic stealing.
Background technology
Current transformer belongs to key components in kilowatt-hour meter inside, the main actual current flow through in order to measurement, when having the constant high-intensity magnetic field of strong magnet generation around kilowatt-hour meter, current transformer in the kilowatt-hour meter state that reaches capacity, thereby make the output serious distortion of current transformer, cause kilowatt-hour meter seriously to increase the error in dipping of electric energy, a lot of lawless persons utilize high-intensity magnetic field to reach the purpose of stealing.Because kilowatt-hour meter can not measure electric energy exactly, so be unfavorable for the supervision and management of electric administrative department, to electric administrative department, cause very large puzzlement, caused economic loss to country simultaneously.Therefore, how effectively electricity theft prevention, be those skilled in the art's research emphasis.
Summary of the invention
The purpose of this utility model is can not effectively prevent that in order to solve existing small current mutual inductor the lawless person from utilizing the technical problem of high-intensity magnetic field stealing, in order to address this problem, we have designed the high accuracy small current mutual inductor that can prevent strong magnetic stealing, simple in structure, be convenient to install, wiring and management, can effectively prevent the stealing of 300mT magnetic field, certainty of measurement is subject to the impact of high-intensity magnetic field hardly, can reach 0.02 grade, 0.05 level, 0.1 the requirement of level, effectively prevented from utilizing the generation of high-intensity magnetic field stealing situation, be convenient to the supervision and management of electric administrative department, reduced the energy loss that the illegal electricity consumption of lawless person causes, reduced national economic loss.
The concrete technical scheme that the utility model adopts is: the high accuracy small current mutual inductor that can prevent strong magnetic stealing, comprise elementary lead-in wire and secondary coil, elementary lead-in wire is worn around secondary coil 5～10 circles, the end of elementary lead-in wire is connected with the sheet binding post, be provided with the installing hole that size is consistent with the electric energy measurement instrument terminal with spacing on binding post, secondary coil comprises high conducting magnet core and around the enamelled wire of high conducting magnet core outside, the end of secondary coil is connected with secondary output lead, secondary output lead outer surface is provided with the second heat-shrink tube, key is: described small current mutual inductor also comprises antimagnetic shell, elementary lead-in wire and secondary coil by the potting compound integral packaging in antimagnetic shell, antimagnetic outer casing bottom is provided with seal cover.
The beneficial effects of the utility model are: utilizing potting compound is 0.5～2mm by elementary lead-in wire and secondary coil integral packaging at thickness, bottom is provided with in the antimagnetic shell of seal cover, simple in structure, be convenient to install, wiring and management, like this, even apply high-intensity magnetic field in the kilowatt-hour meter outside, due to the magnetic conduction protection that antimagnetic shell is arranged, the certainty of measurement of small current mutual inductor is also influenced hardly, still can correctly measure electric energy, can effectively prevent the stealing of 300mT magnetic field, certainty of measurement can reach 0.02 grade, 0.05 level, 0.1 the requirement of level, effectively prevented from utilizing the generation of high-intensity magnetic field stealing situation.The first heat-shrink tube and the second heat-shrink tube can play good insulation, waterproof action.The surface of binding post is coated with one deck nickel or tin, can improve the resistance to corrosion of binding post, increases the forceful electric power plating tack of binding post, strengthens the conductive capability of binding post, extends the useful life of binding post.
The accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is left view of the present utility model.
In accompanying drawing, 1 represents antimagnetic shell, and 2 represent the first heat-shrink tube, and 3 represent binding post, and 4 represent installing hole, and 5 represent the second heat-shrink tube, and 6 represent secondary output lead, and 7 represent potting compound, and 8 represent seal cover.
Embodiment
Can prevent the high accuracy small current mutual inductor of strong magnetic stealing, comprise elementary lead-in wire and secondary coil, elementary lead-in wire is worn around secondary coil 5～10 circles, the end of elementary lead-in wire is connected with sheet binding post 3, be provided with the installing hole 4 that size is consistent with the electric energy measurement instrument terminal with spacing on binding post 3, secondary coil comprises high conducting magnet core and around the enamelled wire of high conducting magnet core outside, the end of secondary coil is connected with secondary output lead 6, secondary output lead 6 outer surfaces are provided with the second heat-shrink tube 5, key is: described small current mutual inductor also comprises antimagnetic shell 1, elementary lead-in wire and secondary coil by potting compound 7 integral packagings in antimagnetic shell 1, antimagnetic shell 1 bottom is provided with seal cover 8.
The outer surface of described elementary lead-in wire and binding post 3 junctions is provided with the first heat-shrink tube 2.
Claims (2)
1. can prevent the high accuracy small current mutual inductor of strong magnetic stealing, comprise elementary lead-in wire and secondary coil, elementary lead-in wire is worn around secondary coil 5～10 circles, the end of elementary lead-in wire is connected with sheet binding post (3), be provided with the installing hole (4) that size is consistent with the electric energy measurement instrument terminal with spacing on binding post (3), secondary coil comprises high conducting magnet core and around the enamelled wire of high conducting magnet core outside, the end of secondary coil is connected with secondary output lead (6), secondary output lead (6) outer surface is provided with the second heat-shrink tube (5), it is characterized in that: described small current mutual inductor also comprises antimagnetic shell (1), elementary lead-in wire and secondary coil by potting compound (7) integral packaging in antimagnetic shell (1), antimagnetic shell (1) bottom is provided with seal cover (8).
2. the high accuracy small current mutual inductor of preventing strong magnetic stealing according to claim 1, it is characterized in that: the outer surface of described elementary lead-in wire and binding post (3) junction is provided with the first heat-shrink tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204234625U CN203338964U (en) | 2013-07-17 | 2013-07-17 | High-precision small current transformer capable of avoiding strong-magnetism electricity theft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204234625U CN203338964U (en) | 2013-07-17 | 2013-07-17 | High-precision small current transformer capable of avoiding strong-magnetism electricity theft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203338964U true CN203338964U (en) | 2013-12-11 |
Family
ID=49707628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204234625U Expired - Lifetime CN203338964U (en) | 2013-07-17 | 2013-07-17 | High-precision small current transformer capable of avoiding strong-magnetism electricity theft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203338964U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977005A (en) * | 2016-06-12 | 2016-09-28 | 嘉兴威士顿电子科技有限公司 | Assembly method of current transformer and current transformer |
| CN113251193A (en) * | 2021-05-10 | 2021-08-13 | 中国航发贵州红林航空动力控制科技有限公司 | Double-coil fixing method for electromagnetic valve |
| CN113782300A (en) * | 2020-12-24 | 2021-12-10 | 江金北(北京)自动化技术有限公司 | Current transformer wiring structure |
-
2013
- 2013-07-17 CN CN2013204234625U patent/CN203338964U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977005A (en) * | 2016-06-12 | 2016-09-28 | 嘉兴威士顿电子科技有限公司 | Assembly method of current transformer and current transformer |
| CN113782300A (en) * | 2020-12-24 | 2021-12-10 | 江金北(北京)自动化技术有限公司 | Current transformer wiring structure |
| CN113782300B (en) * | 2020-12-24 | 2024-03-29 | 江金北(北京)自动化技术有限公司 | Current transformer wiring structure |
| CN113251193A (en) * | 2021-05-10 | 2021-08-13 | 中国航发贵州红林航空动力控制科技有限公司 | Double-coil fixing method for electromagnetic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |