CN103366937A - Miniature electromagnetic-type voltage transformer - Google Patents
Miniature electromagnetic-type voltage transformer Download PDFInfo
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- CN103366937A CN103366937A CN2013103232754A CN201310323275A CN103366937A CN 103366937 A CN103366937 A CN 103366937A CN 2013103232754 A CN2013103232754 A CN 2013103232754A CN 201310323275 A CN201310323275 A CN 201310323275A CN 103366937 A CN103366937 A CN 103366937A
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- voltage transformer
- magnetic core
- primary coil
- secondary coil
- coil
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Abstract
The invention relates to a miniature electromagnetic-type voltage transformer, which comprises an ultra-crystalline magnetic core, a primary coil, a secondary coil and a four-pin conjoined box cover, wherein the ultra-crystalline magnetic core is installed inside an insulating shell, the primary coil and the secondary coil are wound on the magnetic core, the four-pin conjoined box cover is used for leading out the primary coil and the secondary coil, and the transformer is poured and sealed through epoxy resin. The miniature electromagnetic-type voltage transformer is characterized in that a protecting box is sleeved outside the magnetic core, an environment-friendly Mylar adhesive tape is pasted on the outer surface of the protecting box, and a polyester film is jacketed inside the magnetic core. The miniature electromagnetic-type voltage transformer has the beneficial effects that the structure is simple, hardening processing is simply realized on an original basis, the cost is lowered, and the own performance of the voltage transformer is improved.
Description
Technical field
The invention belongs to the voltage transformer field, relate to a kind of minisize electromagnetic voltage transformer, be specially adapted to the ac voltage signal of high level accurately is transformed to low level ac voltage signal, being applicable to the devices such as electronic circuit of microprocessor, and the present invention adopts epoxy resin encapsulated to bear to dislike natural environment slightly and do not affect its performance.
Background technology
Present voltage transformer generally all is to be used in the outdoor high-voltage occasion, is rarely used in the less occasion in device inner space.Voltage transformer volume of the present invention is little, lightweight, but the weakness of this Micro-Transformer of Voltage is that barotolerance is all relative relatively poor with stability, therefore how to solve this 2 problems, is the thing that those skilled in the art worry always.
Summary of the invention
The object of the invention is to solve the technical problem of Micro-Transformer of Voltage barotolerance and poor stability, designed a kind of minisize electromagnetic voltage transformer, by the improvement to magnetic core and coil, reach the purpose that improves high voltage performance and stability.
The technical solution used in the present invention is; a kind of minisize electromagnetic voltage transformer; primary coil, the secondary coil that comprises the ultracrystallite magnetic core that is installed in insulation crust inside, twines at magnetic core and the conjuncted lid of four pin that is used for drawing primary coil and secondary coil; the instrument transformer epoxy resin encapsulated; key is: the outer cover at magnetic core has the protection box; and be stained with the environmental protection agate and draw adhesive tape at the outer surface of protection box, the inside chuck of magnetic core polyester film.
Isolation strip distance between described primary coil and the secondary coil is greater than 2mm.
The enamelled wire diameter of described primary coil and secondary coil is 0.07mm.
Described four pin lids adopt contact pin type.
Described insulation crust adopts the pbt material.
Key of the present invention is magnetic core has been carried out intensive treatment, can be so that its barotolerance and stability improve greatly.The invention has the beneficial effects as follows simple in structurely, simply realize on the original basis intensive treatment, save cost, improve the self performance of voltage transformer.
Description of drawings
Fig. 1 is voltage transformer internal structure schematic diagram of the present invention.
1 represents primary coil, and 2 represent secondary coil, and 3 represent insulation crust.
Embodiment
A kind of minisize electromagnetic voltage transformer; primary coil 1, the secondary coil 2 that comprises the ultracrystallite magnetic core that is installed in insulation crust 3 inside, twines at magnetic core and the conjuncted lid of four pin that is used for drawing primary coil and secondary coil; the instrument transformer epoxy resin encapsulated; key is: the outer cover at magnetic core has the protection box; and be stained with the environmental protection agate and draw adhesive tape at the outer surface of protection box, the inside chuck of magnetic core polyester film.
Isolation strip distance between described primary coil 1 and the secondary coil 2 is greater than 2mm.
The enamelled wire diameter of described primary coil 1 and secondary coil 2 is 0.07mm.
Described four pin lids adopt contact pin type.
Described insulation crust 3 adopts the pbt material.
Eye-splice is connected insulation crust 3 with lower cover by loam cake.
The present invention in the specific implementation, the electromagnetic type voltage transformer is used for the measurement mechanism of high-accuracy voltage, power, electric energy.Volume is little, and precision is high; The direct welded and installed of printed substrate, easy to use, good looking appearance; Totally-enclosed, machinery and environmental resistance are good, and voltage isolation capabilities is strong, and is safe and reliable.
Current mode voltage transformer in use input voltage can not directly put on armature winding, need seal in current-limiting resistance R voltage signal is converted to mA level current signal, the normal operation state is 2mA/2mA, the mA level signal of secondary output is through external amplifier I/V translation circuit, convert voltage signal to, instrument transformer is operated in the approximate zero load condition, wide dynamic range under this kind application mode again, precision is high, and the linearity is good.Current mode voltage transformer secondary side sampling resistor also can be directly in parallel is to obtain required magnitude of voltage.
Claims (5)
1. minisize electromagnetic voltage transformer; comprise primary coil (1), the secondary coil (2) that is installed in the inner ultracrystallite magnetic core of insulation crust (3), twines at magnetic core and the conjuncted lid of four pin that is used for drawing primary coil and secondary coil; the instrument transformer epoxy resin encapsulated; it is characterized in that: the outer cover at magnetic core has the protection box; and be stained with the environmental protection agate and draw adhesive tape at the outer surface of protection box, the inside chuck of magnetic core polyester film.
2. a kind of minisize electromagnetic voltage transformer according to claim 1 is characterized in that: the isolation strip distance between described primary coil (1) and the secondary coil (2) is greater than 2mm.
3. a kind of minisize electromagnetic voltage transformer according to claim 1, it is characterized in that: the enamelled wire diameter of described primary coil (1) and secondary coil (2) is 0.07mm.
4. a kind of minisize electromagnetic voltage transformer according to claim 1 is characterized in that: described four pin lids employing contact pin type.
5. a kind of minisize electromagnetic voltage transformer according to claim 1 is characterized in that: described insulation crust (3) employing pbt material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103232754A CN103366937A (en) | 2013-07-30 | 2013-07-30 | Miniature electromagnetic-type voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103232754A CN103366937A (en) | 2013-07-30 | 2013-07-30 | Miniature electromagnetic-type voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103366937A true CN103366937A (en) | 2013-10-23 |
Family
ID=49368079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103232754A Pending CN103366937A (en) | 2013-07-30 | 2013-07-30 | Miniature electromagnetic-type voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103366937A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259992A1 (en) * | 2002-12-20 | 2004-07-15 | Gtn Kommunikations- Und Sicherungssysteme Gmbh | Remote supply choke e.g. for broadband transmission systems, has sectioned material arranged between windings of main coil |
| CN2864948Y (en) * | 2006-01-19 | 2007-01-31 | 王祥贵 | Ring type ballast |
| CN101958190A (en) * | 2010-06-21 | 2011-01-26 | 国网电力科学研究院 | Shielding and isolating voltage mutual inductor |
| CN201898027U (en) * | 2010-12-06 | 2011-07-13 | 保定天威集团有限公司 | Drying-free loading-type current transformer |
| JP2011171425A (en) * | 2010-02-17 | 2011-09-01 | Sumida Corporation | Core for coil |
| CN202102873U (en) * | 2011-06-27 | 2012-01-04 | 三河中誉电气有限公司 | Resonance-resisting 10 KV dry voltage transformer |
| CN202332557U (en) * | 2011-11-15 | 2012-07-11 | 佛山市华信微晶金属有限公司 | Printed circuit board (PCB) type miniature voltage transformer |
-
2013
- 2013-07-30 CN CN2013103232754A patent/CN103366937A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259992A1 (en) * | 2002-12-20 | 2004-07-15 | Gtn Kommunikations- Und Sicherungssysteme Gmbh | Remote supply choke e.g. for broadband transmission systems, has sectioned material arranged between windings of main coil |
| CN2864948Y (en) * | 2006-01-19 | 2007-01-31 | 王祥贵 | Ring type ballast |
| JP2011171425A (en) * | 2010-02-17 | 2011-09-01 | Sumida Corporation | Core for coil |
| CN101958190A (en) * | 2010-06-21 | 2011-01-26 | 国网电力科学研究院 | Shielding and isolating voltage mutual inductor |
| CN201898027U (en) * | 2010-12-06 | 2011-07-13 | 保定天威集团有限公司 | Drying-free loading-type current transformer |
| CN202102873U (en) * | 2011-06-27 | 2012-01-04 | 三河中誉电气有限公司 | Resonance-resisting 10 KV dry voltage transformer |
| CN202332557U (en) * | 2011-11-15 | 2012-07-11 | 佛山市华信微晶金属有限公司 | Printed circuit board (PCB) type miniature voltage transformer |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131023 |
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| RJ01 | Rejection of invention patent application after publication |