CN202110936U - Sulfur hexafluoride gas insulated independent type current transformer capable of realizing series-parallel connection - Google Patents
Sulfur hexafluoride gas insulated independent type current transformer capable of realizing series-parallel connection Download PDFInfo
- Publication number
- CN202110936U CN202110936U CN2011200617376U CN201120061737U CN202110936U CN 202110936 U CN202110936 U CN 202110936U CN 2011200617376 U CN2011200617376 U CN 2011200617376U CN 201120061737 U CN201120061737 U CN 201120061737U CN 202110936 U CN202110936 U CN 202110936U
- Authority
- CN
- China
- Prior art keywords
- series
- conductive rod
- conducting rod
- current transformer
- sulfur hexafluoride
- 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 - Lifetime
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model discloses a sulfur hexafluoride gas insulated independent type current transformer capable of realizing series-parallel connection and aims to provide a sulfur hexafluoride gas insulated independent type current transformer which can carry out series-parallel connection switching without wiring boards or connecting bars which are connected in series. The sulfur hexafluoride gas insulated independent type current transformer comprises a shell, a parallel wiring terminal, an outer conductive rod, an inner conductive rod, a series wiring terminal, a wiring terminal, a wiring clamp and a connecting board and is characterized in that the parallel wiring terminal is welded on the shell; the series wiring terminal is installed at the end of the inner conductive rod; the outer conductive rod is sleeved outside the inner conductive rod; an insulating material is used for separating the outer conductive rod from the inner conductive rod; and both the inner conductive rod and the outer conductive rod penetrate through the shell. The sulfur hexafluoride gas insulated independent type current transformer is mainly used for current measurement and relay protection in a power system.
Description
Technical field
The utility model 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 purpose of the utility model is to provide a kind of and 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; The technical solution of the utility model 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 housing 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 beneficial effect of the utility model is:
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 bus terminal block with instrument transformer P2 end be installed in the corresponding polyphone binding post 5 of instrument transformer or and connecting line terminal 2 on, 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 the structural representation of the utility model.
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 utility model and embodiment thereof are done further explain.
Referring to accompanying drawing; The utility model comprises 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 housing 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 the instrument transformer of the utility model (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 utility model 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 housing (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 |
|---|---|---|---|
| CN2011200617376U CN202110936U (en) | 2011-03-10 | 2011-03-10 | Sulfur hexafluoride gas insulated independent type current transformer capable of realizing series-parallel connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200617376U CN202110936U (en) | 2011-03-10 | 2011-03-10 | Sulfur hexafluoride gas insulated independent type current transformer capable of realizing series-parallel connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202110936U true CN202110936U (en) | 2012-01-11 |
Family
ID=45436390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200617376U Expired - Lifetime CN202110936U (en) | 2011-03-10 | 2011-03-10 | Sulfur hexafluoride gas insulated independent type current transformer capable of realizing series-parallel connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202110936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226975A (en) * | 2011-03-10 | 2011-10-26 | 湖南省电力公司电瓷电器厂 | Sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation |
| CN106841738A (en) * | 2016-08-24 | 2017-06-13 | 国网山东省电力公司高唐县供电公司 | Ready-package blade type low-voltage current mutual inductor |
-
2011
- 2011-03-10 CN CN2011200617376U patent/CN202110936U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226975A (en) * | 2011-03-10 | 2011-10-26 | 湖南省电力公司电瓷电器厂 | Sulfur-hexafluoride-insulated stand alone type current transformer capable of serial-parallel transformation |
| CN106841738A (en) * | 2016-08-24 | 2017-06-13 | 国网山东省电力公司高唐县供电公司 | Ready-package blade type low-voltage current mutual inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120111 Effective date of abandoning: 20120829 |