CN204204622U - Can the combination transformer of tandem current transformer - Google Patents
Can the combination transformer of tandem current transformer Download PDFInfo
- Publication number
- CN204204622U CN204204622U CN201420301800.2U CN201420301800U CN204204622U CN 204204622 U CN204204622 U CN 204204622U CN 201420301800 U CN201420301800 U CN 201420301800U CN 204204622 U CN204204622 U CN 204204622U
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- current transformer
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Abstract
A kind of can the combination transformer of tandem current transformer, comprise current transformer and voltage transformer, be respectively used to electric current and the voltage of measuring same high-voltage system, current transformer is wherein made up of several unit, tandem is connected into high voltage, each voltage bear system voltage some/mono-, it is characterized in that by conductor, the respective point of the voltage of the design voltage of the conductor corresponding to current transformer of voltage transformer from voltage transformer being taken out, be connected in the respective conductors of current transformer, make the coil of current transformer, iron core and conductive structure part have the voltage determined, and be not in floating potential.On this basis, one group can be divided into every for the unit of current transformer two, use common iron core to reduce costs.
Description
Technical field
the utility model be forthe electromagnetic induction device of electrical field.
background technologyinstrument transformer converts the instrument of alternating voltage or size of current with accuracy by a certain percentage according to electromagnetic induction principle.Voltage of transformation be voltage transformer, conversion electric current be current transformer.Instrument transformer by iron core, just and the composition such as secondary coil.Be used in the instrument transformer of high-voltage system, general primary coil connects high voltage, secondary ground connection.Between primary and secondary coil and primary coil and iron core, high voltage is born in the insulation between structural member.
Summary of the invention
In order to reduce the voltage of the insulation of instrument transformer, voltage transformer can use tandem technology, by several voltage mutual inductor serials, the voltage of each instrument transformer inside be high-tension some/mono-.As long as manufacture and design rationally, conductor at different levels during work can have the voltage determined.Although current transformer also can make the voltage of its inside reduce by tandem technology, the voltage of the inside at different levels after tandem is not easily determined, its voltage swing depends on some parasitic parameters, not only designed, material, and the impact manufactured, and may by the impact of environment for use.The insulation of bearing the instrument transformer of the higher level of voltage may be damaged.
The utility model be a kind of can the combination transformer of tandem current transformer, comprise current transformer and voltage transformer, current transformer wherein and voltage transformer are respectively used to electric current and the voltage of measuring same high-voltage system, wherein tandem made by current transformer, be made up of several unit, these unit connect into series connection to high voltage, each unit bear system high voltage some/mono-, it is characterized in that by conductor, the voltage of the design voltage corresponding to current transformer of voltage transformer being connected to the respective conductors of current transformer from the respective point taking-up of voltage transformer, to make the coil of current transformer, unshakable in one's determination and conductive structure part has the voltage determined instead of is in floating potential.Its circuit is with reference to Fig. 1 and 2, and the quantity of low-voltage wiring terminal can change as the case may be.The wiring of the reality of unit can be different according to specific requirement.The low-voltage coil of such as bottom-ranked unit can be one, three or more.The conductive structure part of current potential of wherein mediating can be made of one and with the coil of conductor and relevant voltage, iron core is connected, and now this structural member doubles as the bonding conductor between two kinds of instrument transformers.
The utility model be a kind of can the combination transformer of tandem current transformer, comprise current transformer and voltage transformer, current transformer wherein and voltage transformer are respectively used to electric current and the voltage of measuring same high-voltage system, wherein tandem made by current transformer, be made up of several unit, these unit connect into series connection to high voltage, every for the unit of instrument transformer two-stage is divided into one group, use common iron core, at this moment unshakable in one's determination with the voltage in the middle of two-stage, its feature be by conductor the voltage of the design voltage corresponding to current transformer of voltage transformer taken out from the respective point of voltage transformer to be connected to the respective conductors of current transformer, to make the coil of current transformer, unshakable in one's determination and conductive structure part has the voltage determined instead of is in floating potential.May reduce costs like this.Its circuit is with reference to Fig. 3.The quantity of low-voltage wiring terminal can change as the case may be.The wiring of the reality of unit can be different according to specific requirement.The low-voltage coil of such as bottom-ranked unit can be one, three or more.The conductive structure part of current potential of wherein mediating can be made of one and with the coil of conductor and relevant voltage, iron core is connected, and now this structural member doubles as the bonding conductor between two kinds of instrument transformers.
For the instrument transformer having housing, unit can be contained in respective shell respectively, also can be contained in public shell.Current transformer and voltage transformer can fill in shell respectively, also can be one packaged in public shell.Current transformer and voltage transformer can be contained on respective support respectively, also can be contained on public support.At different levels or each unit of instrument transformer can be contained on respective support respectively, also can be contained on a unified support.The way easily of each cellular installation happens frequently one by one.The conductive structure part of current potential of wherein mediating can be made of one and with the coil of conductor and relevant voltage, iron core is connected, and now this structural member doubles as the bonding conductor between two kinds of instrument transformers.
Because the voltage of the instrument transformer every grade (or every unit) of tandem reduces, reduce the manufacture difficulty of high tension instrument transformer, thus the producer that technical equipment can be made not too strong manufactures the instrument transformer of higher system voltage, the producer that level is higher also can manufacture more high-tension instrument transformer.
Certainly, current transformer is made tandem and voltage transformer is not made tandem, or the quantity of the quantity of current transformer unit and voltage transformer unit is done different, also passable in the tap intermediate voltage between the unit of current transformer being connected to the relevant voltage of voltage transformer coil by conductor.
Accompanying drawing explanation
Fig. 1 is secondary tandem combination transformer connection principle illustrated example.1 and 2 is the 1st grade and the 2nd grade of unit of current transformer respectively; 3 and 4 is the 1st grade and the 2nd grade of unit of voltage transformer respectively; 5 is the coils that should have intermediate voltage making current transformer, and unshakable in one's determination and conductive structure part has the bonding conductor determined between the current transformer of voltage and voltage transformer; 6 ~ 9 is conductive structure part; 10 and 11 is high-pressure side binding posts of combination transformer; 12 ~ 15 is low-voltage wiring terminals of current transformer.
Fig. 2 is the electrical schematic diagram of multistage-combination instrument transformer.1,2 and 3 is current transformer unit at different levels; 4,5 and 6 is voltage transformer unit at different levels; 7 and 8 is make the conductor of current transformer have the bonding conductor determining voltage, connects current transformer and voltage transformer; 9 and 10 is high-pressure side binding posts of combination transformer; 11 is low-voltage wiring terminals of current transformer; 12 is low-voltage wiring terminals of voltage transformer.
Fig. 3 is divided into one group every for the unit of instrument transformer two-stage, uses common iron core.At this moment unshakable in one's determination with the voltage in the middle of two-stage.In Fig. 3,1 and 2 is unshakable in one's determination; 3 and 4 is coils of subordinate's instrument transformer; 5 and 6 is coils of higher level's instrument transformer; 7 is the conductors connecting current transformer and voltage transformer intermediate voltage, thus the conductor of the voltage that makes current transformer should mediate has had the voltage determined.
Specific embodiment
A kind of can the combination transformer of tandem current transformer, comprise current transformer and voltage transformer, current transformer wherein and voltage transformer are respectively used to electric current and the voltage of measuring same high-voltage system, wherein tandem made by current transformer, be made up of several unit, these unit connect into series connection to high voltage, each unit bear system high voltage some/mono-, it is characterized in that by conductor, the voltage of the design voltage corresponding to current transformer of voltage transformer being connected to the respective conductors of current transformer from the respective point taking-up of voltage transformer, to make the coil of current transformer, unshakable in one's determination and conductive structure part has the voltage determined instead of is in floating potential.With reference to Fig. 1 and 2.
A kind of can the combination transformer of tandem current transformer, comprise current transformer and voltage transformer, current transformer wherein and voltage transformer are respectively used to electric current and the voltage of measuring same high-voltage system, wherein tandem made by current transformer, be made up of several unit, these unit connect into series connection to high voltage, every for the unit of instrument transformer two-stage is divided into one group, use common iron core, at this moment unshakable in one's determination with the voltage in the middle of two-stage, its feature be by conductor the voltage of the design voltage corresponding to current transformer of voltage transformer taken out from the respective point of voltage transformer to be connected to the respective conductors of current transformer, to make the coil of current transformer, unshakable in one's determination and conductive structure part has the voltage determined instead of is in floating potential.May reduce costs like this, with reference to Fig. 3.
Claims (2)
1.
a kind of can tandem current transformercombination transformer, comprise current transformer and voltage transformer, current transformer wherein and voltage transformer are respectively used to electric current and the voltage of measuring same high-voltage system, wherein tandem made by current transformer, be made up of several unit, these unit connect into series connection to high voltage, each unit bear system high voltage some/mono-, it is characterized in that by conductor, the voltage of the design voltage corresponding to current transformer of voltage transformer being connected to the respective conductors of current transformer from the respective point taking-up of voltage transformer, to make the coil of current transformer, unshakable in one's determination and conductive structure part has the voltage determined instead of is in floating potential.
2.
a kind of can tandem current transformercombination transformer, comprise current transformer and voltage transformer, current transformer wherein and voltage transformer are respectively used to electricity and the voltage of measuring same high-voltage system, wherein tandem made by current transformer, be made up of several unit, these unit connect into series connection to high voltage, every for the unit of instrument transformer two-stage is divided into one group, use common iron core, at this moment unshakable in one's determination with the voltage in the middle of two-stage, its feature be by conductor the voltage of the design voltage corresponding to current transformer of voltage transformer taken out from the respective point of voltage transformer to be connected to the respective conductors of current transformer, to make the coil of current transformer, unshakable in one's determination and conductive structure part has the voltage determined instead of is in floating potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420301800.2U CN204204622U (en) | 2014-06-09 | 2014-06-09 | Can the combination transformer of tandem current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420301800.2U CN204204622U (en) | 2014-06-09 | 2014-06-09 | Can the combination transformer of tandem current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204622U true CN204204622U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420301800.2U Expired - Fee Related CN204204622U (en) | 2014-06-09 | 2014-06-09 | Can the combination transformer of tandem current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204622U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128741A (en) * | 2016-08-12 | 2016-11-16 | 山东亿玛信诺电气有限公司 | Unified no-load voltage ratio molded breadth width metering combination transformer |
| WO2021031749A1 (en) * | 2019-08-22 | 2021-02-25 | 南京南瑞继保电气有限公司 | Solid-state transformer |
-
2014
- 2014-06-09 CN CN201420301800.2U patent/CN204204622U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128741A (en) * | 2016-08-12 | 2016-11-16 | 山东亿玛信诺电气有限公司 | Unified no-load voltage ratio molded breadth width metering combination transformer |
| WO2021031749A1 (en) * | 2019-08-22 | 2021-02-25 | 南京南瑞继保电气有限公司 | Solid-state transformer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20170609 |