CN102969137A - High-precision and low-power current transformer for protecting electronic instrument and microcomputer - Google Patents
High-precision and low-power current transformer for protecting electronic instrument and microcomputer Download PDFInfo
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- CN102969137A CN102969137A CN2012104813223A CN201210481322A CN102969137A CN 102969137 A CN102969137 A CN 102969137A CN 2012104813223 A CN2012104813223 A CN 2012104813223A CN 201210481322 A CN201210481322 A CN 201210481322A CN 102969137 A CN102969137 A CN 102969137A
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- copper conductor
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- conductor winding
- current transformer
- precision
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Abstract
A high-precision and low-power current transformer for protecting an electronic instrument and a microcomputer mainly comprises a primary copper conductor winding, a secondary copper conductor winding, a magnetic core, an insulation shell and a base, wherein the primary copper conductor winding penetrates the center of the magnetic core, the secondary copper conductor winding is uniformly wound on the magnetic core and placed inside the primary copper conductor winding, an insulation layer is arranged between the primary copper conductor winding and the secondary copper conductor winding, and the insulation shell and the base form an integrity. The high-precision and low-power current transformer is small in size, light in weight, low in raw material cost and strong in electromagnetic compatibility and conforms to the low-carbon and environment-friendly requirement which is proposed at present. Moreover, by adopting the high-precision and low-power current transformer, a signal detection unit of the measurement instrument and microcomputer protection device can cancel the converter, after the amplitude limiting, an analog-digital conversion circuit can be directly entered, and a great amount of resource can be saved.
Description
Technical field
The present invention relates to a kind of current transformer, relate in particular to a kind of high accuracy for electronic instrument, Microcomputer Protection, low power current transformer.
Background technology
Progress along with technology; be transported to now double measurement, the protection of electric equipment and all adopted electronic instrument, Microcomputer Protection; these instrument, protection are because itself precision can be done very highly; general 0.5 grade, therefore the precision of previous stage current transformer there has been higher requirement, in addition; and because electronic instrument, microcomputer protecting device are very little to the power requirement of signal; generally only need 0.1-0.5VA, thus, invented high accuracy, lower powered instrument transformer.
Summary of the invention
The objective of the invention is in order to overcome in the prior art not enough, thereby a kind of high accuracy for electronic instrument, Microcomputer Protection, low power current transformer are provided.
Be used for electronic instrument, the high accuracy of Microcomputer Protection, low power current transformer; mainly comprise copper conductor winding, secondary copper wire winding, magnetic core, insulation crust and base one time; one time the copper conductor winding runs through by the magnetic core center; secondary copper wire winding uniform winding is in magnetic core places copper conductor winding; be provided with insulating barrier between copper conductor winding and the secondary copper wire winding, insulation crust and base consist of an integral body.
Adopt the beneficial effect of technique scheme to be:
The present invention has that volume is little, lightweight, the cost of raw material is low and Electro Magnetic Compatibility is strong, meets low-carbon (LC), the environmental requirement of present proposal.And, adopt this instrument transformer after, the detecting signal unit of measuring instrument, microcomputer protecting device can be cancelled converter, directly enters analog to digital conversion circuit behind the amplitude limit, from and can save ample resources.
Description of drawings
Fig. 1 is high accuracy, the low power current transformer structural representation that the present invention is used for electronic instrument, Microcomputer Protection.
Among the figure: copper conductor winding of 1-, 2-secondary copper wire winding, 3-magnetic core, 4-insulation crust, 5-base.
Embodiment
Be used for electronic instrument; the high accuracy of Microcomputer Protection; low power current transformer mainly comprises copper conductor winding 1 one time; secondary copper wire winding 2; magnetic core 3; insulation crust 4 and base 5; one time copper conductor winding 1 runs through by magnetic core 3 centers; secondary copper wire winding 2 uniform winding are in magnetic core 3 places copper conductor winding 1; be provided with insulating barrier between copper conductor winding 1 and the secondary copper wire winding 2; insulation crust 4 consists of an integral body with base 5; the output of secondary low-power signal can be according to the secondary device requirement; electric current can be the 0.1-0.5A scope, and power is 1-2VA.
Secondary output of the present invention is the low-power current signal linearly proportional with primary current; A secondary winding just can satisfy the multiple requirement of measuring and protecting simultaneously; Also can be by customer requirements, secondary winding is a plurality of, respectively as metering, measurement, protection etc.; The present invention has that volume is little, lightweight, the cost of raw material is low and Electro Magnetic Compatibility is strong, meets low-carbon (LC), the environmental requirement of present proposal.And, adopt this instrument transformer after, the detecting signal unit of measuring instrument, microcomputer protecting device can be cancelled converter, directly enters analog to digital conversion circuit behind the amplitude limit, from and can save ample resources.
Product of the present invention is compared with similar other products, and volume is original 1/3, and weight also is original 1/3, and cost only is original 1/2, and precision improves, and is applicable to the current transformer of 0.4-35kV electric current 5A to 10000A.
Claims (1)
1. be used for electronic instrument; the high accuracy of Microcomputer Protection; low power current transformer; it is characterized in that: it mainly comprises a copper conductor winding (1); secondary copper wire winding (2); magnetic core (3); insulation crust (4) and base (5); a copper conductor winding (1) runs through by magnetic core (3) center; secondary copper wire winding (2) uniform winding is in magnetic core (3) places a copper conductor winding (1); be provided with insulating barrier between a copper conductor winding (1) and the secondary copper wire winding (2), insulation crust (4) consists of an integral body with base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104813223A CN102969137A (en) | 2012-11-23 | 2012-11-23 | High-precision and low-power current transformer for protecting electronic instrument and microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104813223A CN102969137A (en) | 2012-11-23 | 2012-11-23 | High-precision and low-power current transformer for protecting electronic instrument and microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102969137A true CN102969137A (en) | 2013-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104813223A Pending CN102969137A (en) | 2012-11-23 | 2012-11-23 | High-precision and low-power current transformer for protecting electronic instrument and microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102969137A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330162A (en) * | 1995-05-30 | 1996-12-13 | Tokin Corp | Composite coil component |
| CN2259678Y (en) * | 1995-09-18 | 1997-08-13 | 上海倍斯特实业有限公司 | Ring-shape small size current mutual inductor |
| JP2001108711A (en) * | 1999-09-09 | 2001-04-20 | Pioch Sa:Co | Induction pick-up for measuring current inside conductor |
| CN1658344A (en) * | 2005-03-10 | 2005-08-24 | 上海Mwb互感器有限公司 | Low-power electronic current mutual inductor |
| JP2007123625A (en) * | 2005-10-28 | 2007-05-17 | En Liang Enterprise Co Ltd | Current transformer and manufacturing method thereof |
| CN201319312Y (en) * | 2008-11-25 | 2009-09-30 | 北京瑞奇恩电器设备有限公司 | Core-piercing current transformer with high precision |
| CN201780862U (en) * | 2010-07-07 | 2011-03-30 | 杭州彼爱琪电器有限公司 | Open type current transformer |
| CN202996567U (en) * | 2012-11-23 | 2013-06-12 | 遵义长征电器开关设备有限责任公司 | High-accuracy low-power current mutual inductor for electronic instrument and microcomputer protection |
-
2012
- 2012-11-23 CN CN2012104813223A patent/CN102969137A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330162A (en) * | 1995-05-30 | 1996-12-13 | Tokin Corp | Composite coil component |
| CN2259678Y (en) * | 1995-09-18 | 1997-08-13 | 上海倍斯特实业有限公司 | Ring-shape small size current mutual inductor |
| JP2001108711A (en) * | 1999-09-09 | 2001-04-20 | Pioch Sa:Co | Induction pick-up for measuring current inside conductor |
| CN1658344A (en) * | 2005-03-10 | 2005-08-24 | 上海Mwb互感器有限公司 | Low-power electronic current mutual inductor |
| JP2007123625A (en) * | 2005-10-28 | 2007-05-17 | En Liang Enterprise Co Ltd | Current transformer and manufacturing method thereof |
| CN201319312Y (en) * | 2008-11-25 | 2009-09-30 | 北京瑞奇恩电器设备有限公司 | Core-piercing current transformer with high precision |
| CN201780862U (en) * | 2010-07-07 | 2011-03-30 | 杭州彼爱琪电器有限公司 | Open type current transformer |
| CN202996567U (en) * | 2012-11-23 | 2013-06-12 | 遵义长征电器开关设备有限责任公司 | High-accuracy low-power current mutual inductor for electronic instrument and microcomputer protection |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130313 |