CN104576004A - Load-adjustable voltage mutual inductor for electric power measurement - Google Patents
Load-adjustable voltage mutual inductor for electric power measurement Download PDFInfo
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- CN104576004A CN104576004A CN201510006683.6A CN201510006683A CN104576004A CN 104576004 A CN104576004 A CN 104576004A CN 201510006683 A CN201510006683 A CN 201510006683A CN 104576004 A CN104576004 A CN 104576004A
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Abstract
A load-adjustable voltage mutual inductor for electric power measurement comprises a primary coil, a primary framework, a secondary coil, a secondary framework, an annular iron core and an outer ring; the primary coil is wrapped on the primary framework; the secondary coil is wrapped on the second framework; both the primary framework and the secondary framework are sleeved on the annular iron core; the outer ring comprises an externally connecting multi-turn coil and an annular metal core; the externally connecting multi-turn coil is wrapped on the annular metal core; the annular iron core is fixed with one turn of wire; the one turn of wire passes through the inner hole of the outer ring; the externally connecting multi-turn coil is connected in series with the wire of the secondary coil, i.e., the input end of the wire of the externally connecting coil is connected with the output end of the secondary wire of the secondary coil. The load-adjustable voltage mutual inductor for electric power measurement has the advantages of changing the conventional production method of deciding the yielding capacity based on orders, and being able to preparing the inventory largely; when being required by users, different capacities at the same precision level can be adjusted by changing the turns of the externally connecting multi-turn coil.
Description
Technical field
The present invention relates to electrical equipment, particularly a kind of electric-power metering voltage transformer of deferrable load.
Background technology
In electric power system, because using the difference of site environment, different for the load capacity required by voltage transformer, change various.And more the existing production model of enterprise adopts to overlap production technology, to meet the different demands of client.So often cause Lead Time long, cannot stock be had.And production process controls complicated, causes production cost significantly to increase.The more important thing is, in user's use procedure, if because of load variations, when measuring accuracy cannot meet standard-required, to only have and again change voltage transformer.So not only adding users cost, also causes social resources to waste greatly.For this situation, tunable load voltage transformer has been invented by my company.This voltage transformer changes traditional with the production method of single fixed output quota, can have stock in a large number, as long as change the number of turn of exterior loop when the user desires, just can recall the different capabilities under same accuracy class.
Summary of the invention
The object of the invention is, provide a kind of electric-power metering voltage transformer of deferrable load, its structure is simple, and easy to use, cost is low, easily processing in enormous quantities;
The technical scheme adopted is:
A kind of electric-power metering voltage transformer of deferrable load, comprise primary winding, a skeleton, secondary coil, secondary skeleton, annular core and outer ring, primary winding twines and is located on a skeleton, secondary coil twines and is located on secondary skeleton, a skeleton and secondary skeleton are all set on annular core, above structure is the known structure of conventional current instrument transformer, described outer ring, comprise external multiturn coil and endless metal core, external multiturn coil twines and is located on endless metal core, described annular core is fixedly cast with a circle wire, the two ends of one circle wire are all fixedly connected with annular core, a described circle wire passes from the endoporus of outer ring, external multiturn coil is connected in series with the wire of secondary coil, namely the input of the wire of external multiturn coil is connected with the output of the secondary wiring of secondary coil.
Described endless metal core can be iron core.
The number of turn of described external multiturn coil can be 100.
The invention has the advantages that:
An electric-power metering voltage transformer for deferrable load, changes traditional with the production method of single fixed output quota, can have stock in a large number, as long as change the number of turn of external multiturn coil when the user desires, just can recall the different capabilities under same accuracy class.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the left view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
A kind of electric-power metering voltage transformer of deferrable load, comprise primary winding 1, a skeleton 2, secondary coil 3, secondary skeleton 4, annular core 5 and outer ring, primary winding 1 twines and is located on a skeleton 2, secondary coil 3 twines and is located on secondary skeleton 4, a skeleton 2 and secondary skeleton 4 are all set on annular core 5, described outer ring, comprise external multiturn coil 6 and endless metal core 7, external multiturn coil 6 twines and is located on endless metal core 7, described annular core 5 is fixedly cast with a circle wire 8, the two ends of one circle wire 8 are all fixedly connected with annular core 5, a described circle wire 8 passes from the endoporus of outer ring, external multiturn coil 6 is connected in series with the wire of secondary coil 3, namely the input of the wire of external multiturn coil 6 is connected with the output of the secondary wiring of secondary coil 3.
Described endless metal core 5 can be iron core.
The number of turn of described external multiturn coil 6 can be 100.
Claims (3)
1. the electric-power metering voltage transformer of a deferrable load, comprise primary winding (1), a skeleton (2), secondary coil (3), secondary skeleton (4), annular core (5) and outer ring, primary winding (1) twines and is located on a skeleton (2), secondary coil (3) twines and is located on secondary skeleton (4), a skeleton (2) and secondary skeleton (4) are all set on annular core (5), it is characterized in that: described outer ring, comprise external multiturn coil (6) and endless metal core (7), external multiturn coil (6) twines and is located on endless metal core (7), described annular core (5) is fixedly cast with a circle wire (8), the two ends of one circle wire (8) are all fixedly connected with annular core (5), a described circle wire (8) passes from the endoporus of outer ring, external multiturn coil (6) is connected in series with the wire of secondary coil (3), namely the input of the wire of external multiturn coil (6) is connected with the output of the secondary wiring of secondary coil (3).
2. the electric-power metering voltage transformer of a kind of deferrable load according to claim 1, is characterized in that: described endless metal core (5) is iron core.
3. the electric-power metering voltage transformer of a kind of deferrable load according to claim 1, is characterized in that: the number of turn of described external multiturn coil (6) is 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006683.6A CN104576004B (en) | 2015-01-08 | 2015-01-08 | A kind of electric-power metering voltage transformer of deferrable load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006683.6A CN104576004B (en) | 2015-01-08 | 2015-01-08 | A kind of electric-power metering voltage transformer of deferrable load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104576004A true CN104576004A (en) | 2015-04-29 |
| CN104576004B CN104576004B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510006683.6A Active CN104576004B (en) | 2015-01-08 | 2015-01-08 | A kind of electric-power metering voltage transformer of deferrable load |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219331A (en) * | 1996-02-08 | 1997-08-19 | Toshiba Corp | Current transformer |
| JP2000156326A (en) * | 1998-11-20 | 2000-06-06 | Fuji Electric Co Ltd | Potential transformer |
| JP2001033490A (en) * | 1999-07-23 | 2001-02-09 | Matsushita Electric Ind Co Ltd | Optical current transformer |
| KR20110045405A (en) * | 2009-10-26 | 2011-05-04 | 엘에스산전 주식회사 | Current measuring module in test-apparatus for testing power semiconductor module |
| CN103227045A (en) * | 2013-05-09 | 2013-07-31 | 南京江北自动化技术有限公司 | Electronic current transformer |
| CN103872800A (en) * | 2014-04-08 | 2014-06-18 | 武汉大学 | Transmitting terminal applied to magnetic resonance wireless power transmission device |
-
2015
- 2015-01-08 CN CN201510006683.6A patent/CN104576004B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09219331A (en) * | 1996-02-08 | 1997-08-19 | Toshiba Corp | Current transformer |
| JP2000156326A (en) * | 1998-11-20 | 2000-06-06 | Fuji Electric Co Ltd | Potential transformer |
| JP2001033490A (en) * | 1999-07-23 | 2001-02-09 | Matsushita Electric Ind Co Ltd | Optical current transformer |
| KR20110045405A (en) * | 2009-10-26 | 2011-05-04 | 엘에스산전 주식회사 | Current measuring module in test-apparatus for testing power semiconductor module |
| CN103227045A (en) * | 2013-05-09 | 2013-07-31 | 南京江北自动化技术有限公司 | Electronic current transformer |
| CN103872800A (en) * | 2014-04-08 | 2014-06-18 | 武汉大学 | Transmitting terminal applied to magnetic resonance wireless power transmission device |
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| CN104576004B (en) | 2016-12-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Effective date of registration: 20160918 Address after: 116200, No. 1, No. 164, Tang Fang street, Taiping Industrial Park, Pulandian District, Liaoning, Dalian Applicant after: DALIAN NO.2 INSTRUMENT TRANSFORMER CO., LTD. Address before: 116200, Dalian City, Liaoning province Pulandian East Ring Road South Section Applicant before: Japan nine (Dalian) mutual inductor Co., Ltd. |
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