CN204390894U - Instrument transformer structure - Google Patents
Instrument transformer structure Download PDFInfo
- Publication number
- CN204390894U CN204390894U CN201520115783.8U CN201520115783U CN204390894U CN 204390894 U CN204390894 U CN 204390894U CN 201520115783 U CN201520115783 U CN 201520115783U CN 204390894 U CN204390894 U CN 204390894U
- Authority
- CN
- China
- Prior art keywords
- iron core
- line bag
- zero sequence
- instrument transformer
- terminals
- 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
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- Transformers For Measuring Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a kind of instrument transformer structure, comprise housing and be contained in epoxy cylinder in housing, that be wound around blue or green shell composite-insulating paper, the periphery of blue or green shell composite-insulating paper arranges measurement iron core, zero sequence iron core is also provided with in housing, the periphery measuring iron core and zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, slotted line bag and zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, slotted line bag and zero sequence line bag are separated by electrician's cardboard, the first terminals drawn by slotted line bag, and the second terminals drawn by zero sequence line bag.Measurement iron core and zero sequence iron core are contained in same instrument transformer housing, secondary induced current is drawn by the first terminals of slotted line bag, second terminals of the zero sequence line bag of multiple instrument transformer are carried out combination wiring, carry out the measurement of zero-sequence current, measurement function is many, use flexibly, can greatly improve installation effectiveness.
Description
Technical field
The utility model relates to a kind of instrument transformer structure.
Background technology
Traditional current transformer structure is in instrument transformer housing, arrange the epoxy cylinder being wound around blue or green shell composite-insulating paper, and in the periphery of blue or green shell composite-insulating paper, iron core measured by cover, measures on iron core and is wound around slotted line bag.During use, by bus through epoxy cylinder center, slotted line is wrapped and can be induced less secondary current, is used for carrying out protecting, the purposes such as measurement.Adopt the structure of this current transformer, because structure is single, only can carry out monophase current measurement.To carry out the measurement of other parameters of electric power to electric power main line, especially the measurement of zero-sequence current, need install additional can simultaneously through the instrument transformer structure of many buses, and such as in the main line of a three-phase four-wire system, zero sequence current mutual inductor needs can simultaneously through 4 buses of A, B, C, N.As can be seen here, the Zhou Chang great of zero-sequence transformer, expends core material many, also very heavy, installs difficulty.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, there is provided one to have simultaneously and measure iron core and zero sequence iron core, combination wiring can be carried out during use and carry out zero sequence current measurement, use flexibly, can installation effectiveness be improved, save the instrument transformer structure of iron core cost.
For achieving the above object, the utility model adopts so a kind of instrument transformer structure, comprise housing and be contained in described housing, be wound around the epoxy cylinder of blue or green shell composite-insulating paper, the periphery of described blue or green shell composite-insulating paper arranges measurement iron core, zero sequence iron core is also provided with in described housing, the periphery of described measurement iron core and described zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, described slotted line bag and described zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, described slotted line bag and described zero sequence line bag are separated by electrician's cardboard, the first terminals drawn by described slotted line bag, the second terminals drawn by described zero sequence line bag.Compared with the prior art, the beneficial effects of the utility model are embodied in: measurement iron core and zero sequence iron core are contained in same instrument transformer housing, secondary induced current is drawn by the first terminals of slotted line bag, second terminals of the zero sequence line bag of multiple instrument transformer are carried out combination wiring, carry out the measurement of zero-sequence current, measurement function is many, uses flexibly, can greatly improve installation effectiveness.
Especially, described measurement iron core and described zero sequence iron core are in being axially arranged side by side.
Especially, described measurement iron core and described zero sequence iron core radially surround setting.
What no matter measure that iron core and zero sequence iron core adopt is axially be arranged side by side structure, or radial encirclement arranges structure, all can ensure that the secondary current that obtains responded to by slotted line bag and the secondary current indifference obtained responded to by zero sequence line bag, and iron core Expenses Cost indifference.
Especially, described instrument transformer housing is provided with wire hole, and the first described terminals and the second described terminals extend out by described wire hole.First terminals and the second terminals are drawn by wire hole, protects the wire harness of the first terminals and the second terminals neat, be convenient to arrange, and be not subject to the pullling of miscellaneous part, swipe and damage.
Accompanying drawing explanation
Fig. 1 is the external structure of a kind of instrument transformer structure of the utility model;
Fig. 2 is the structure chart that the utility model embodiment 1 measures iron core and zero sequence iron core;
Fig. 3 is the structure chart that the utility model embodiment 2 measures iron core and zero sequence iron core.
Embodiment
As shown in Figure 1, 2, a kind of instrument transformer structure, comprise housing 1 and be contained in epoxy cylinder 14 in housing 1, that be wound around blue or green shell composite-insulating paper 13, the periphery of blue or green shell composite-insulating paper 13 is arranged measures iron core 11, zero sequence iron core 12 is also provided with in housing, the periphery measuring iron core 11 and zero sequence iron core 12 is wound around slotted line bag and zero sequence line bag respectively, slotted line bag and zero sequence line bag are all wrapped with iron core outsourcing insulating paper 17 outward, slotted line bag and zero sequence line bag are separated by electrician's cardboard 15, the first terminals drawn by slotted line bag, and the second terminals drawn by zero sequence line bag.
Measurement iron core 11 and zero sequence iron core 12 are in being axially arranged side by side.
Measurement iron core 11 and zero sequence iron core 12 radially surround setting.
Instrument transformer housing 1 is provided with wire hole 2, and the first terminals and the second terminals extend out by wire hole 2.
As shown in Figure 3, embodiment 2 is the another kind of structure of zero-sequence mutual inductance, comprise three instrument transformer housings 1, the epoxy cylinder 14a of a winding blue or green shell composite-insulating paper 13a is all held in three instrument transformer housings 1, the periphery of blue or green shell composite-insulating paper 13a arranges by electrician's cardboard 15a separated measurement iron core 11a and zero sequence iron core 12a, the periphery measuring iron core 11 and zero sequence iron core 12a is wound around slotted line bag 16a and zero sequence line bag respectively, slotted line bag 16a and zero sequence line bag are all wrapped with iron core outsourcing insulating paper 17a outward, as different from Example 1, measurement iron core 11a in embodiment 2 and zero sequence iron core 12a radially surrounds setting.
Claims (4)
1. an instrument transformer structure, comprise housing and be contained in described housing, be wound around the epoxy cylinder of blue or green shell composite-insulating paper, the periphery of described blue or green shell composite-insulating paper arranges measurement iron core, it is characterized in that: in described housing, be also provided with zero sequence iron core, the periphery of described measurement iron core and described zero sequence iron core is wound around slotted line bag and zero sequence line bag respectively, described slotted line bag and described zero sequence line bag are all wrapped with iron core outsourcing insulating paper outward, described slotted line bag and described zero sequence line bag are separated by electrician's cardboard, the first terminals drawn by described slotted line bag, the second terminals drawn by described zero sequence line bag.
2. instrument transformer structure according to claim 1, is characterized in that: described measurement iron core and described zero sequence iron core are in being axially arranged side by side.
3. instrument transformer structure according to claim 1, is characterized in that: described measurement iron core and described zero sequence iron core radially surround setting.
4. the instrument transformer structure according to claim 1,2 or 3, is characterized in that: described instrument transformer housing is provided with wire hole, and the first described terminals and the second described terminals extend out by described wire hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520115783.8U CN204390894U (en) | 2015-02-16 | 2015-02-16 | Instrument transformer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520115783.8U CN204390894U (en) | 2015-02-16 | 2015-02-16 | Instrument transformer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204390894U true CN204390894U (en) | 2015-06-10 |
Family
ID=53363592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520115783.8U Expired - Fee Related CN204390894U (en) | 2015-02-16 | 2015-02-16 | Instrument transformer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204390894U (en) |
-
2015
- 2015-02-16 CN CN201520115783.8U patent/CN204390894U/en not_active Expired - Fee Related
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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: 20150610 Termination date: 20190216 |