CN203910508U - Outdoor anti-ferromagnetic resonance voltage transformer - Google Patents
Outdoor anti-ferromagnetic resonance voltage transformer Download PDFInfo
- Publication number
- CN203910508U CN203910508U CN201420017941.1U CN201420017941U CN203910508U CN 203910508 U CN203910508 U CN 203910508U CN 201420017941 U CN201420017941 U CN 201420017941U CN 203910508 U CN203910508 U CN 203910508U
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- Prior art keywords
- binding post
- phase binding
- winding
- divider resistance
- standing groove
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Abstract
The utility model discloses an outdoor anti-ferromagnetic resonance voltage transformer. The outdoor anti-ferromagnetic resonance voltage transformer comprises a casing, a zero-phase binding post, a primary winding, a secondary winding, an A-phase binding post, a B-phase binding post and a C-phase binding post, wherein the A-phase binding post, the B-phase binding post and the C-phase binding post are connected with protective circuits in series; the protective circuits comprise breakers and a plurality of divider resistors; the A-phase binding post, the B-phase binding post and the C-phase binding post and the divider resistors are connected with the breakers in series; the divider resistors are electrically connected with the primary winding; the divider resistors are detachably connected with the casing. The outdoor anti-ferromagnetic resonance voltage transformer has the advantages that as the breakers and the divider resistors are provided, the breakers break the electric connection between the binding posts and the primary winding when the voltage is too high, so as to prevent the primary winding from being burnt, the divider resistors can reduce the voltage input to the primary winding, and the voltage input to the primary winding can be regulated by adopting the divider resistors with different resistance values, so that the effect of regulating the voltage transformation amplitude of the whole voltage transformer is achieved.
Description
Technical field
The utility model relates to a kind of high-tension measurement equipment, relates in particular the anti-ferro resonance voltage transformer in a kind of open air.
Background technology
Voltage transformer is the equipment of measuring voltage, electric energy in electric power system or electrical apparatus control system; because voltage transformer often the phenomenon of ferro resonance can occur in the process of work; and then have influence on the reliability of operation of power networks; the voltage transformer of current outdoor use is all oil immersed type voltage transformer, does not possess the function of anti-ferro resonance.
Having notification number is that the patent of CN 2817020Y discloses the totally-enclosed anti-ferro-resonance three-phase voltage mutual inductor of a kind of outdoor dry type, in inside, be provided with 4 voltage device bodies, A, B, winding of C three-phase electricity depressor body are formed after three-phase star-star connection, a neutral point is through winding earth of residual voltage device body, same secondary winding forms after star-star connection, secondary neutral is through the secondary winding ground connection of residual voltage device body, so just the ferro resonance of generation in service can be incorporated on ground wire, reach the effect of an anti-ferro resonance.
But the voltage transformer of this structure; be not provided with any protective circuit in the above; like this be easy to occur because electrical network is input to the problem that instrument transformer voltage burns out instrument transformer when excessive; and the transformation amplitude of this instrument transformer is certain; when there is no the instrument of wide range when running into high pressure; just good measuring voltage, the scope of application of having limited to instrument transformer.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of have protective circuit, the anti-ferro resonance voltage transformer in open air that the scope of application is wide.
For achieving the above object, the utility model provides following technical scheme: the anti-ferro resonance voltage transformer in a kind of open air, comprise housing, the zero terminal that joins, a winding, secondary winding and A, B, C three-phase binding post, described A, B, C three-phase binding post and the zero terminal that joins are all connected with a winding electric, described A, B, C three-phase binding post is all in series with protective circuit, described protective circuit comprises circuit breaker and several divider resistances, described A, B, C three-phase binding post and divider resistance are all connected with circuit breaker, described divider resistance is connected with a winding electric, described divider resistance and housing removably connect.
By adopting technique scheme, when voltage transformer is linked in circuit, due to A, B, C three-phase binding post is all in series with protective circuit, protective circuit comprises circuit breaker and several divider resistances, A, B, C three-phase binding post and divider resistance are all connected with circuit breaker, divider resistance is connected with a winding electric, divider resistance and housing removably connect, like this from A, B, the electric current of C three-phase binding post input will be preferential through circuit breaker, after circuit breaker, entering into again winding one time, like this when external voltage is too high, circuit breaker will produce action, disconnect the electrical connection between binding post and a winding, prevent that high-tension electric current from flowing among a winding, cause a winding to burn out, and arranging of divider resistance can divide to fall to be input to the voltage on winding one time, make to be really input to voltage and an external voltage on winding and produce certain difference, so just can be by regulating the resistance size of divider resistance to regulate this difference, thereby reach the effect of the transformation amplitude that changes instrument transformer, for example, when instrument transformer secondary winding connects a measuring instrument that range is smaller, and tested voltage ratio is larger time, when the voltage that mutual inductance goes out is greater than this range, just can increase the resistance of divider resistance, reduce the induced voltage that secondary winding induces, so just can measure voltage now by this measuring instrument, then by mathematical computations, difference is before being filled, instrument transformer does not just need specific measuring instrument to coordinate like this, strengthened the scope of application of instrument transformer.
The utility model is further set to: described housing is provided with the first standing groove, described circuit breaker is arranged in the first standing groove, described the first standing groove is provided with protective plate, and described protective plate one side and the first standing groove are hinged, and opposite side and housing removably connect.
By adopting technique scheme, the setting by the first standing groove just can effectively be installed to circuit breaker on the housing of instrument transformer, and protective plate can effectively prevent circuit breaker generation misoperation.
The utility model is further set to: described protective plate is provided with fixture block, and described housing is provided with for the draw-in groove with fixture block clamping.
By adopting technique scheme, when needs are shut protective plate, only fixture block and draw-in groove need to be interlocked, when needs are opened protective plate, only fixture block and exact separation need to be come, convenience very.
The utility model is further set to: on described housing, be also provided with the second standing groove that quantity equates with divider resistance, described divider resistance is arranged in the second standing groove, on described the second standing groove, is removably connected with protective cover.
By adopting technique scheme, by arranging of the second standing groove, can effectively divider resistance be installed on housing, when divider resistance carries out separation, only divider resistance need to be taken out in the second standing groove, while accessing, only divider resistance need to be packed into the second standing groove interface, convenience very.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of the anti-ferro resonance voltage transformer in open air of the present utility model;
Fig. 2 is A portion enlarged drawing in Fig. 1;
Fig. 3 is B portion enlarged drawing in Fig. 1;
Fig. 4 is the winding diagram of the anti-ferro resonance voltage transformer in open air of the present utility model.
In figure: 1, housing; 11, the first standing groove; 111, protective plate; 1111, fixture block; 12, draw-in groove; 13, the second standing groove; 131, protective cover; 2, three-phase binding post; 21, protective circuit; 3, the zero terminal that joins; 4, circuit breaker; 5, a winding; 6, secondary winding; R, divider resistance.
Embodiment
Shown in Fig. 2, the anti-ferro resonance voltage transformer in a kind of open air of the present embodiment, comprise housing 1, the zero terminal 3 that joins, a winding 5, secondary winding 6 and A, B, C three-phase binding post 2, described A, B, C three-phase binding post 2 and the zero terminal 3 that joins are all electrically connected to a winding 5, described A, B, C three-phase binding post 2 is all in series with protective circuit 21, described protective circuit 21 comprises circuit breaker 4 and several divider resistances R, described A, B, C three-phase binding post 2 and divider resistance R all connect with circuit breaker 4, described divider resistance R is electrically connected to a winding 5, described divider resistance R and housing 1 removably connect.
By adopting technique scheme, when voltage transformer is linked in circuit, due to A, B, C three-phase binding post 2 is all in series with protective circuit 21, protective circuit 21 comprises circuit breaker 4 and several divider resistances R, A, B, C three-phase binding post 2 and divider resistance R all connect with circuit breaker 4, divider resistance R is electrically connected to a winding 5, divider resistance R and housing 1 removably connect, like this from A, B, the electric current of C three-phase binding post 2 input will be preferential through circuit breaker 4, after circuit breaker 4, entering into again winding 5 one time, like this when external voltage is too high, circuit breaker 4 will produce action, disconnect the electrical connection between binding post and a winding 5, prevent that high-tension electric current from flowing among a winding 5, cause a winding 5 to burn out, and arranging of divider resistance R can divide to fall to be input to the voltage on winding 5 one time, make to be really input to voltage and an external voltage on winding 5 and produce certain difference, so just can be by regulating the resistance size of divider resistance R to regulate this difference, thereby reach the effect of the transformation amplitude that changes instrument transformer, for example, when instrument transformer secondary winding 6 connects a measuring instrument that range is smaller, and tested voltage ratio is larger time, when the voltage that mutual inductance goes out is greater than this range, just can increase the resistance of divider resistance R, reduce the induced voltage that secondary winding 6 induces, so just can measure voltage now by this measuring instrument, then by mathematical computations, difference is before being filled, instrument transformer does not just need specific measuring instrument to coordinate like this, strengthened the scope of application of instrument transformer.
Described housing 1 is provided with the first standing groove 11, and described circuit breaker 4 is arranged in the first standing groove 11, and described the first standing groove 11 is provided with protective plate 111, and described protective plate 111 1 sides and the first standing groove 11 are hinged, and opposite side and housing 1 removably connect.
By adopting technique scheme, the setting by the first standing groove 11 just can effectively be installed to circuit breaker 4 on the housing 1 of instrument transformer, and protective plate 111 can effectively prevent circuit breaker 4 generation misoperations.
Described protective plate 111 is provided with fixture block 1111, and described housing 1 is provided with for the draw-in groove 12 with fixture block 1111 clampings.
By adopting technique scheme, when needs are shut protective plate 111, only fixture block 1111 and draw-in groove 12 need to be interlocked, when needs are opened protective plate 111, only fixture block 1111 and draw-in groove 12 need to be separated to convenience very.
On described housing 1, be also provided with the second standing groove 13 that quantity equates with divider resistance R, described divider resistance R is arranged in the second standing groove 13, on described the second standing groove 13, is removably connected with protective cover 131.
By adopting technique scheme, by arranging of the second standing groove 13, can effectively divider resistance R be installed on housing 1, when divider resistance R carries out separation, only need to be by divider resistance R from the interior taking-up of the second standing groove 13, while accessing, only divider resistance R need to be packed into the second standing groove 13 interfaces, convenience very.
The utlity model has following advantage: by the setting of circuit breaker 4 and divider resistance R, when voltage is excessive, circuit breaker 4 just can disconnect being electrically connected between binding post and a winding 5, prevent that the winding 5 from burning out, and arranging of divider resistance R can be reduced the voltage that is input to a winding 5, by adopting the divider resistance R of different resistances just can regulate the voltage that is input to a winding 5, thereby reach the effect of the transformation amplitude that regulates whole voltage transformer, when voltage transformer is linked in circuit, due to A, B, C three-phase binding post 2 is all in series with protective circuit 21, protective circuit 21 comprises circuit breaker 4 and several divider resistances R, A, B, C three-phase binding post 2 and divider resistance R all connect with circuit breaker 4, divider resistance R is electrically connected to a winding 5, divider resistance R and housing 1 removably connect, like this from A, B, the electric current of C three-phase binding post 2 input will be preferential through circuit breaker 4, after circuit breaker 4, entering into again winding 5 one time, like this when external voltage is too high, circuit breaker 4 will produce action, disconnect the electrical connection between binding post and a winding 5, prevent that high-tension electric current from flowing among a winding 5, cause a winding 5 to burn out, and arranging of divider resistance R can divide to fall to be input to the voltage on winding 5 one time, make to be really input to voltage and an external voltage on winding 5 and produce certain difference, so just can be by regulating the resistance size of divider resistance R to regulate this difference, thereby reach the effect of the transformation amplitude that changes instrument transformer, for example, when instrument transformer secondary winding 6 connects a measuring instrument that range is smaller, and tested voltage ratio is larger time, when the voltage that mutual inductance goes out is greater than this range, just can increase the resistance of divider resistance R, reduce the induced voltage that secondary winding 6 induces, so just can measure voltage now by this measuring instrument, then by mathematical computations, difference is before being filled, instrument transformer does not just need specific measuring instrument to coordinate like this, strengthened the scope of application of instrument transformer.
The above is only preferred implementation of the present utility model, and protection range of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. the anti-ferro resonance voltage transformer in open air; comprise housing, zero join terminal, winding, secondary winding and an A, B, C three-phase binding post; described A, B, C three-phase binding post and the zero terminal that joins are all connected with a winding electric; it is characterized in that: described A, B, C three-phase binding post are all in series with protective circuit; described protective circuit comprises circuit breaker and several divider resistances; described A, B, C three-phase binding post and divider resistance are all connected with circuit breaker; described divider resistance is connected with a winding electric, and described divider resistance and housing removably connect.
2. the anti-ferro resonance voltage transformer in open air according to claim 1, it is characterized in that: described housing is provided with the first standing groove, described circuit breaker is arranged in the first standing groove, described the first standing groove is provided with protective plate, described protective plate one side and the first standing groove are hinged, and opposite side and housing removably connect.
3. the anti-ferro resonance voltage transformer in open air according to claim 2, is characterized in that: described protective plate is provided with fixture block, and described housing is provided with for the draw-in groove with fixture block clamping.
4. the anti-ferro resonance voltage transformer in open air according to claim 3, it is characterized in that: on described housing, be also provided with the second standing groove that quantity equates with divider resistance, described divider resistance is arranged in the second standing groove, on described the second standing groove, is removably connected with protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017941.1U CN203910508U (en) | 2014-01-13 | 2014-01-13 | Outdoor anti-ferromagnetic resonance voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017941.1U CN203910508U (en) | 2014-01-13 | 2014-01-13 | Outdoor anti-ferromagnetic resonance voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910508U true CN203910508U (en) | 2014-10-29 |
Family
ID=51784764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420017941.1U Expired - Fee Related CN203910508U (en) | 2014-01-13 | 2014-01-13 | Outdoor anti-ferromagnetic resonance voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203910508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957085A (en) * | 2018-07-26 | 2018-12-07 | 大力电工襄阳股份有限公司 | High-voltage detecting device |
-
2014
- 2014-01-13 CN CN201420017941.1U patent/CN203910508U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957085A (en) * | 2018-07-26 | 2018-12-07 | 大力电工襄阳股份有限公司 | High-voltage detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20180113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |