CN201681712U - Integrated magnetic-control range-switchover current transformer - Google Patents
Integrated magnetic-control range-switchover current transformer Download PDFInfo
- Publication number
- CN201681712U CN201681712U CN2010200103607U CN201020010360U CN201681712U CN 201681712 U CN201681712 U CN 201681712U CN 2010200103607 U CN2010200103607 U CN 2010200103607U CN 201020010360 U CN201020010360 U CN 201020010360U CN 201681712 U CN201681712 U CN 201681712U
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- over switch
- current transformer
- switch
- change
- change over
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Abstract
The utility model provides an integrated magnetic-control range-switchover current transformer, which comprises a transformer main body, a change-over switch arranged at one end of the transformer main body to achieve the switching of all range windings of the transformer, and a corona cover, wherein the change-over switch is an electromagnetic control change-over switch of output terminals of all gears arranged on the transformer main body and comprises a switch contact part and an electromagnetic control part. In the technical scheme, the change-over switch, a connecting wire, and the transformer main body of the current transformer are organically combined into an integrated product, so that the connecting wire between the original change-over switch and the current transformer is omitted, manual connection of the lead is not required, and the occurrence of connection fault is avoided; in addition, the a few wires and insulating materials are omitted, the structure is greatly reduced and simplified, the volume is obviously reduced, the range switching efficiency of the electromagnetic control change-over switch is high, the mechanical friction and abrasion of the traditional change-over switch are avoided, and the service life is prolonged.
Description
Technical field
The utility model relates to current transformer and its change over switch, the current transformer that in particular has the range translation function.
Background technology
Present current transformer product, top are provided with some multrirange splicing ears, and each splicing ear is through connecting copper cash and the corresponding connection of each switch retaining of change over switch, supporting use, and both finish measurement of inductance by the selection of current transformer being measured range.The supporting syndeton of above-mentioned split is connected by the different copper cash of thickness, the range splicing ear of current transformer can reach more than ten, the current range scope of the splicing ear that has can reach several kiloamperes, needs to connect quite thick copper wires, and attended operation is not very convenient.Present change over switch is the squirrel-cage structure, in circumference multiple tracks insulating support rod, each insulating support rod upper end is provided with splicing ear and switch contact thereof, match with these splicing ear switch contacts be positioned at central authorities by motor-driven common switch contact, in conversion is switched, some switch contacts in the middle of streak in rotation successively the common switch contact block to required measurement gear on-off contact, because some irrelevant range splicing ear switch contacts are streaked in the centre, so the wear extent of switch contact is bigger, influenced the useful life of change over switch, and cause poor contact of contacts easily, generate heat even burn; The switching of the change over switch of this structure length consuming time, efficient are low in addition.
Summary of the invention
But goal of the invention of the present utility model is to provide a kind of has current transformer to estimate one's own ability journey switching capability and moment to finish the current transformer that integral type magnetic control range that range switches switches.The current transformer technical scheme that the integral type magnetic control range that the utility model provides switches, its major technique content is: the current transformer that a kind of integral type magnetic control range switches, it includes current transformer body, be arranged at change over switch and corona cover thereof that current transformer body one end realizes that each range winding of instrument transformer switches, change over switch is the electromagnetism control change over switch that is arranged at each range retaining lead-out terminal of current transformer body, change over switch includes switch contact part and electromagnetism control part, each fixed contact of switch contact part is electrically connected on respectively on each corresponding lead-out terminal of instrument transformer winding, the moving contact that cooperates with the fixed contact switch is controlled by electromagnetism control part, slide in vertical inner chamber of each skeleton of electromagnetism control part and be provided with moving magnetic core and trace thereof, on the skeleton, the lower end is respectively arranged with one group and drives on the moving magnetic core, the solenoid and the static magnet of lower slider operation, moving contact is arranged at trace one end, and moving contact is electrically connected with the output copper bar.
The current transformer technical scheme that the integral type magnetic control range that the utility model provides switches, with change over switch, the current transformer body that connects lead and current transformer organically is combined as whole product, saved the lead that is connected between original change over switch and current transformer, need not the artificial attended operation of extra copper conductor, avoided connecting the generation of fault, the parts such as insulating material in the former change over switch have also been saved, structure construction is greatly simplified, dwindle, both saved the independent translation switch for above-mentioned reasons and connected taking up room of lead, and the integral product of the technical program is configured on the volume also the current transformer product of more existing same model and has significantly and dwindle.The big technological merit of another of the technical program is: its range switches by corresponding automatically controlled signal control electromagnetism control change over switch realizes moment break-make, gating, improved the range switching efficiency greatly, so both guaranteed that change over switch had good switch on and off matching property, the version of this change over switch of what is more important has been avoided the mechanical friction wearing and tearing, therefore product improves useful life greatly, and is easy to assembly.
Description of drawings
Fig. 1 is the cut-open view of final assembly of the current transformer of integral type magnetic control range switching.
Fig. 2 is the structure pie graph of change over switch.
Fig. 3 is the plan structure figure that Fig. 1 removes the corona cover.
Embodiment
The current transformer that the utility model provides integral type magnetic control range to switch, the one example structure is shown in each figure, it includes the change over switch of each range tap changing control of realization instrument transformer of current transformer body and current transformer body one end, and the sealing change over switch is provided with corona cover 3.The flange port 6 of instrument transformer housing 4 upper ends is set with switch frame plate 7, corona cover 3 is also fixedlyed connected with this flange port 6, input copper bar 20 passes switch frame plate 7 and is electrically connected with instrument transformer first siding ring 1 input, some taps 2 of instrument transformer first siding ring 5 are drawn switch frame plate 7 through going between respectively, and switch frame plate 7 is provided with that being electrically connected on respectively respectively goes between 5 is provided with change over switch fixed contact 8.The change over switch that switch contact part that fixed contact 8 that switch cooperates and moving contact 9 constitute and electromagnetism control have partly constituted this current transformer, slide in vertical inner chamber of each skeleton 12 in the described electromagnetism control part and be provided with moving magnetic core 10 and trace 11 thereof, as shown in Figure 2, trace 11 lower ends are provided with moving contact 9 through contiguous block 25 with crossed universal shaft 24 connections, on the skeleton 12, the lower end is respectively arranged with and drives moving magnetic core 10 and moving contact 9 thereof and move the realization change over switch up and down and cut-off, the cut-offfing solenoid 13 and cut-off static magnet 14 of adhesive, adhesive solenoid 15 and adhesive static magnet 16 thereof, each skeleton 12 fixed support of change over switch are arranged on the switch on the frame plate 17, and each moving contact 9 all is electrically connected on the output copper bar 19 through the copper bar 18 that is flexible coupling.Input copper bar 20 and output copper bar 19 are drawn corona cover 3 upper backup pads 21 and are provided with.
Each change over switch cut-off solenoid 13 and adhesive solenoid 15 is connected in the control circuit 23, realize the switch control of each change over switch, form because of its circuit and can realize by public circuit, be not described in detail its circuit at this and form.The course of work of the current transformer that this integral type magnetic control range switches is: the change over switch of at first supposing each range retaining is off-state; When a certain range of current transformer keeps off selected closure, the output automatically controlled signal makes adhesive solenoid 15 energising, cut-off solenoid 13 can assist energising, respectively moving magnetic core 10 is produced the suction-combining force and repulsive force, it is descending to drive moving magnetic core 10 and trace 11 thereof, and moving contact 9 is stablized adhesive, gating with fixed contact 8 under the effect of crossed universal shaft; When needs disconnect this change over switch, the automatically controlled signal of being exported makes the logical reverse currents of adhesive solenoid 15, cut-off solenoid 13 can assist energising, respectively moving magnetic core 10 is produced repulsive force and the suction-combining force, it is up to drive moving magnetic core 10 and trace 11 thereof, makes moving contact 9 and fixed contact 8 break away from attracting state.
In the present embodiment structure, the reliability for the switching manipulation that improves change over switch also is provided with moving solenoid 22 on the trace 11.
Claims (1)
1. the current transformer that switches of an integral type magnetic control range, it includes current transformer body, it is characterized in that being arranged at change over switch and the corona cover thereof that current transformer body one end realizes that each range winding of instrument transformer switches, change over switch is the electromagnetism control change over switch that is arranged at each range retaining lead-out terminal of current transformer body, change over switch includes switch contact part and electromagnetism control part, each fixed contact of switch contact part is electrically connected on respectively on each corresponding lead-out terminal of instrument transformer winding, the moving contact that cooperates with the fixed contact switch is controlled by electromagnetism control part, slide in vertical inner chamber of each skeleton of electromagnetism control part and be provided with moving magnetic core and trace thereof, on the skeleton, the lower end is respectively arranged with one group and drives on the moving magnetic core, the solenoid and the static magnet of lower slider operation, moving contact is arranged at trace one end, and moving contact is electrically connected with the output copper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200103607U CN201681712U (en) | 2010-01-18 | 2010-01-18 | Integrated magnetic-control range-switchover current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200103607U CN201681712U (en) | 2010-01-18 | 2010-01-18 | Integrated magnetic-control range-switchover current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681712U true CN201681712U (en) | 2010-12-22 |
Family
ID=43346749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200103607U Expired - Fee Related CN201681712U (en) | 2010-01-18 | 2010-01-18 | Integrated magnetic-control range-switchover current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201681712U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616282A (en) * | 2018-12-18 | 2019-04-12 | 江西亚威电气有限公司 | A kind of transformer |
| CN115453176A (en) * | 2022-11-07 | 2022-12-09 | 南方电网数字电网研究院有限公司 | Sensitivity-switchable current mutual inductance device and current detection device |
-
2010
- 2010-01-18 CN CN2010200103607U patent/CN201681712U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616282A (en) * | 2018-12-18 | 2019-04-12 | 江西亚威电气有限公司 | A kind of transformer |
| CN115453176A (en) * | 2022-11-07 | 2022-12-09 | 南方电网数字电网研究院有限公司 | Sensitivity-switchable current mutual inductance device and current detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20120118 |