CN102226975B - Sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation - Google Patents
Sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation Download PDFInfo
- Publication number
- CN102226975B CN102226975B CN201110057409A CN201110057409A CN102226975B CN 102226975 B CN102226975 B CN 102226975B CN 201110057409 A CN201110057409 A CN 201110057409A CN 201110057409 A CN201110057409 A CN 201110057409A CN 102226975 B CN102226975 B CN 102226975B
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- CN
- China
- Prior art keywords
- conducting rod
- serial
- current transformer
- stand alone
- type current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000009466 transformation Effects 0.000 title abstract 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 6
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 6
- 229910018503 SF6 Inorganic materials 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The invention discloses a sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation. A sulfur-hexafluoride-insulated stand alone type current transformer can carry out the serial-parallel transformation without using serial wiring boards or connecting bars. The stand alone type current transformer comprises a shell, a parallel wire connecting terminal, an external conducting rod, an internal conducting rod, a serial wire connecting terminal, a wire connecting terminal, a wire connecting clamp and a connecting board, wherein the parallel wire connecting terminal is welded on the shell; the serial wire connecting terminal is arranged at one end part of the internal conducting rod; the external conducting rod is sleeved outside the internal conducting rod and an insulated material is used for separating the external conducting rod from the internal conducting rod; and the internal conducting rod and the external conducting rod both pass through the shell. The stand alone type current transformer is mainly applied to current measurement and relay protection in an electrical power system.
Description
Technical field
The present invention relates to a kind of free-standing current transformer, relate in particular to a kind of can be series-parallel sulfur hexafluoride gas-insulating stand alone type current transformer.
Background technology
At present domestic and international sulphur hexafluoride (SF
6) gas insulated high voltage current transformer, all there is certain deficiency in its series parallel structure on reliability of changing and convenience.The user is embodied in: when need carry out the connection in series-parallel conversion to the instrument transformer that configures; Need (when series connection is changed in parallel connection) or dismounting (when parallel connection is changed in series connection) series wiring plate be installed on the instrument transformer or connect row's (sheet); Has certain workload; And needing pair of wire connection terminals closure and position to adjust, complicated operation often needs manufacturing firm to instruct and installs.Secondly, because structural limitations, series wiring plate or connection row (sheet) sectional dimension are less than normal, have reduced series wiring plate or connection row's (sheet) electric current tolerance, are difficult to satisfy heating and short time thermal current designing requirement for a long time.
Summary of the invention
The object of the present invention is to provide a kind ofly to need not to use the series wiring plate or connect the sulfur hexafluoride gas-insulating stand alone type current transformer that row's (sheet) can carry out the connection in series-parallel conversion, to overcome above-mentioned shortcoming.
For realizing above-mentioned purpose; Technical solution of the present invention is: a kind of can be series-parallel sulfur hexafluoride gas-insulating stand alone type current transformer; Comprise housing 1, parallelly connected binding post 2, outer conducting rod 3, interior conducting rod 4, series wiring terminal 5, binding post 6, binding clip 7 and connecting plate 8; It is characterized in that: described parallelly connected binding post 2 is welded on the shell 1, the end of conducting rod 4 in series wiring terminal 5 is installed in, the outside of conducting rod 4 in outer conducting rod 3 is sleeved on; Have insulating material to separate between the two, interior conducting rod all passes housing 1 with outer conducting rod.
The invention has the beneficial effects as follows:
When instrument transformer carries out the connection in series-parallel replacing; Need not to change any parts of instrument transformer; Need not to use any series wiring plate or busbar (sheet); Only need the bus terminal block of instrument transformer P2 end is installed on instrument transformer corresponding the series wiring terminal 5 or parallelly connected binding post 2, instrument transformer can obtain series operation state or parallel running state.Owing to do not use any series wiring plate or busbar (sheet), the connection in series-parallel changing-over is simple.And because the conductive cross-sectional area of instrument transformer primary equipment does not reduce, instrument transformer long-time running temperature rise can be guaranteed, and can guarantee instrument transformer long-term safety reliability service.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1-housing, 2-parallel connection binding post, the outer conducting rod of 3-, conducting rod in the 4-, 5-series wiring terminal, 6-binding post, 7-binding clip, 8-connecting plate, 9-sleeve pipe.
Embodiment
Below in conjunction with accompanying drawing the present invention and embodiment thereof are done further explain.
Referring to accompanying drawing; The present invention includes housing 1, parallelly connected binding post 2, outer conducting rod 3, interior conducting rod 4, series wiring terminal 5, binding post 6, binding clip 7 and connecting plate 8; It is characterized in that: described parallelly connected binding post 2 is welded on the shell 1, the end of conducting rod 4 in series wiring terminal 5 is installed in, the outside of conducting rod 4 in outer conducting rod 3 is sleeved on; Have insulating material to separate between the two, interior conducting rod all passes housing 1 with outer conducting rod.
The parallelly connected binding post 2 on the right side of instrument transformer of the present invention (claiming the P2 end again) is welded on the housing 1; The outside of conducting rod 4 in outer conducting rod 3 is sleeved on; Be separated with insulating material between the two, the two all passes housing 1, the end of conducting rod 4 in series wiring terminal 5 is installed in.The binding post 6 in the present invention left side (claiming the P1 end again) is installed in the end of outer conducting rod 3, and interior conducting rod 4 is communicated with housing 1 through binding clip 7 and connecting plate 8.
When the user is installed in the 2 last times of parallelly connected binding post on the housing 1 with the bus terminal block; The instrument transformer running status is parallel connection; At this moment; Instrument transformer left side bus current flows out to the bus on instrument transformer right side through binding post 6 → outer conducting rod 3 → parallelly connected binding post 2, and one time number of ampere turns has only a circle, and instrument transformer obtains specified full no-load voltage ratio electric current.
5 last times of series wiring terminal in the user is installed in the bus terminal block on the conducting rod 4; The instrument transformer running status is series connection; At this moment, instrument transformer left side bus current flows out to instrument transformer right side bus through binding post 6 → outer conducting rod 3 → housing 1 → connecting plate 8 → binding clip 7 → interior conducting rod 4 → series wiring terminal 5.One time number of ampere turns has two circles, and instrument transformer obtains the rated current of half no-load voltage ratio.
When equipment is installed, circuit bus terminal block is installed in 2 last times of parallelly connected binding post, the instrument transformer running status be parallelly connected.Circuit bus terminal block is installed in 5 last times of series wiring terminal, and the instrument transformer running status is series connection.Sleeve pipe 9 links to each other with the instrument transformer base.
Claims (1)
- One kind can be series-parallel sulfur hexafluoride gas-insulating stand alone type current transformer; Comprise housing (1), parallelly connected binding post (2), outer conducting rod (3), interior conducting rod (4), series wiring terminal (5), binding post (6), binding clip (7) and connecting plate (8); It is characterized in that: described parallelly connected binding post (2) is welded on the shell (1); Series wiring terminal (5) is installed in the end of interior conducting rod (4); Outer conducting rod (3) is sleeved on the outside of interior conducting rod (4), has insulating material to separate between the two, and interior conducting rod all passes housing (1) with outer conducting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110057409A CN102226975B (en) | 2011-03-10 | 2011-03-10 | Sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110057409A CN102226975B (en) | 2011-03-10 | 2011-03-10 | Sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102226975A CN102226975A (en) | 2011-10-26 |
| CN102226975B true CN102226975B (en) | 2012-08-29 |
Family
ID=44807938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110057409A Expired - Fee Related CN102226975B (en) | 2011-03-10 | 2011-03-10 | Sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102226975B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710857B (en) * | 2015-07-31 | 2018-12-11 | 西门子公司 | Current transformer with multiturn conducting rod |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694452Y (en) * | 2004-03-09 | 2005-04-20 | 广东四会互感器厂有限公司 | Sulfur hexafluoride current transformer |
| CN201503767U (en) * | 2009-04-13 | 2010-06-09 | 平高集团有限公司 | Serial connection structure of high-voltage current mutual inductor |
| CN202110936U (en) * | 2011-03-10 | 2012-01-11 | 湖南省电力公司电瓷电器厂 | Sulfur hexafluoride gas insulated independent type current transformer capable of realizing series-parallel connection |
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2011
- 2011-03-10 CN CN201110057409A patent/CN102226975B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102226975A (en) | 2011-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jiang Hanru Inventor after: Li Chaohui Inventor after: Zeng Yanling Inventor after: Zhang Qi Inventor after: Zhang Shaojun Inventor after: Su Huanli Inventor before: Jiang Hanru |
|
| CB03 | Change of inventor or designer information | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 412205 Hunan city of Zhuzhou province Liling City three road No. 6 Patentee after: HUNAN ELECTRIC POWER PORCELAIN ELECTRIC APPLIANCE CO.,LTD. Address before: 412205 Hunan city of Zhuzhou province Liling City three road No. 6 Patentee before: Hunan Electric Power Company Electric Porcelain Electric Appliance Factory |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 |
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| CF01 | Termination of patent right due to non-payment of annual fee |