CN203444967U - Three-phase four-wire split-assembling epoxy resin poured dry voltage transformer - Google Patents
Three-phase four-wire split-assembling epoxy resin poured dry voltage transformer Download PDFInfo
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- CN203444967U CN203444967U CN201320505744.XU CN201320505744U CN203444967U CN 203444967 U CN203444967 U CN 203444967U CN 201320505744 U CN201320505744 U CN 201320505744U CN 203444967 U CN203444967 U CN 203444967U
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- voltage transformer
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- phase semi
- insulating
- epoxy resin
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Abstract
A three-phase four-wire split-assembling epoxy resin poured dry voltage transformer is used for voltage measurement in a neutral ineffectively grounded system of 10kV and below, and comprises a one-phase semi-insulating voltage transformer A, a one-phase semi-insulating voltage transformer B, a one-phase semi-insulating voltage transformer C, an installation support and a secondary wring box. The three transformers are identical in shape and structure. Each one-phase semi-insulating voltage transformer is composed of an insulation protection body, a transformer body, a low-voltage out-going line and a wiring box. The insulation protection bodies formed by pouring outdoor epoxy resin in a vacuumed mode are adopted to package the transformer bodies composed of iron cores, high and low voltage windings and high and low voltage out-going lines. The low voltage out-going lines in the wiring boxes are connected with low voltage leads through screws, then pass through the installation support formed by welding steel channels and then are led out from the secondary wiring box in a concentrated mode. The one-phase semi-insulating voltage transformer A, the one-phase semi-insulating voltage transformer B and the one-phase semi-insulating voltage transformer C are fixed on the installation support through fastening bolts in parallel.
Description
Technical field
The utility model belongs to the three-phase high voltage potential device in electric power system, does voltage measurement and use in 10kV and following system with non effectively earth ed neutral.
Background technology
At present, plain edition three-phase combination voltage instrument transformer is generally integrated poured all insulation structure, in the domestic electric power system that installation and operation is 50Hz in rated frequency, exists volume large, Heavy Weight, and be difficult for using in the electric power system that is 60Hz in frequency.
Summary of the invention
The utility model is assembled semi-insulating structure, specializes in voltage measurement and uses, and error precision is high, and creepage distance is large, adjustable spaced apart, and tool anti-stealing electricity function, volume is little, lightweight, at home all can stable operation in the electric power system of 50Hz or external 60Hz.
The utility model solves the technical scheme that its technical problem adopts: it is comprised of A, B, single-phase semi-insulated voltage transformer, mounting bracket, secondary terminal box three parts that tri-shape and structures of C are identical; Each single-phase semi-insulated voltage transformer forms by insulating protector, device body, low pressure lead-out wire, terminal box; the insulating protector that adopts outdoor epoxide resin vacuum cast to form; in the device body being comprised of iron core, high-low pressure winding, high-low voltage leads is encapsulated in; low pressure lead-out wire is connected with low-voltage lead by screw in terminal box; then the mounting bracket that is welded via channel-section steel is inner integrated draws in secondary terminal box, and A, B, tri-single-phase semi-insulated voltage transformers of C are fixed on mounting bracket by fastening bolt is parallel.
Described insulating protector top is high-tension insulating bushing, and its outer face is provided with two groups of large and small alternate full skirts, and full skirt cross section is dihedral.
Described mounting bracket, is provided with six pairs of strip slideways.
The iron core of described single-phase semi-insulated voltage transformer is all selected coiled strip oriented silicon steel disc to roll and is formed, and core section is symmetrical stairstepping.
The beneficial effects of the utility model are: the utility model is the threephase potential transformer that metering is used of specializing in being formed by A, B, tri-semi-insulating single-phase potential transformer separable assembleds of C, because three single-phase potential transformers are assembled, compare with integrated casting type threephase potential transformer before this, reduced alternate unnecessary epoxy resins insulation layer, make small product size little, lightweight, installation and maintenance are more convenient.
Mounting bracket is provided with six pairs of strip slideways, can adjust flexibly spaced apart according to user demand.Two groups of large and small full skirts of insulating protector top high-tension insulating bushing design, and have strengthened the creepage distance of product, guarantee that product can safe and reliable operation in heavy pollution area.
Mounting bracket that the low pressure lead-out wire of three single-phase semi-insulated voltage transformers is welded via channel-section steel is inner integrated draws in secondary terminal box, has anti-stealing electricity function.
The iron core of each single-phase semi-insulated voltage transformer is all selected coiled strip oriented silicon steel disc to roll and is formed, core section is symmetrical stairstepping, activity coefficient is high, magnetic circuit distortion is little, can be according to system frequency flexible design core section size, when improving measuring accuracy, guaranteed that the utility model can stable operation be in the electric power system of 50Hz or 60Hz in frequency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is front view of the present utility model.
Fig. 2 is left view of the present utility model.
1. insulating protectors in figure, 2. high-voltage connection, 3. high pressure winding; 4. low pressure winding, 5. iron core, 6. slideway; 7. fastening bolt, 8. low pressure lead-out wire, 9. screw; 10. secondary terminal box, 11. terminal boxes, 12. mounting brackets; 13.C phase semi-insulated voltage transformer, 14. high-tension insulating bushings, 15. full skirts; 16.B phase semi-insulated voltage transformer, 17.A phase semi-insulated voltage transformer, 18. low-voltage leads.
Embodiment
Fig. 1, embodiment illustrated in fig. 2 in, the utility model is comprised of three identical single-phase semi-insulated voltage transformer, mounting bracket (12), secondary terminal box (10) three parts of shape and structure, three single-phase semi-insulated voltage transformers, specifically comprise A phase semi-insulated voltage transformer (17), B phase semi-insulated voltage transformer (16), C phase semi-insulated voltage transformer (13), each single-phase semi-insulated voltage transformer is by insulating protector (1), device body, low pressure lead-out wire (8), terminal box (11) forms, the insulating protector (1) that adopts outdoor epoxide resin vacuum cast to form, will be by iron core (5), high pressure winding (3), low pressure winding (4), high-voltage connection (2), in the device body that low-voltage lead (18) forms is encapsulated in, low pressure lead-out wire (8) is connected with low-voltage lead (18) by screw (9) in terminal box (11), then the mounting bracket being welded via channel-section steel (12) is inner integrated draws in secondary terminal box (10), A phase semi-insulated voltage transformer (17), B phase semi-insulated voltage transformer (16), C phase semi-insulated voltage transformer (13) is fixed on mounting bracket (12) by fastening bolt (7) is parallel.
Insulating protector (1) top is high-tension insulating bushing (14), and its outer face is provided with two groups of large and small alternate full skirts (15), and full skirt (15) cross section is dihedral.
Mounting bracket (12) is provided with six pairs of strip slideways (6).
The iron core of each single-phase semi-insulated voltage transformer (5) is all selected coiled strip oriented silicon steel disc to roll and is formed, and core section is symmetrical stairstepping.
Claims (4)
1. a three-phase and four-line separable assembled epoxy resin pouring dry type voltage transformer, it is by A, B, the single-phase semi-insulated voltage transformer that tri-shape and structures of C are identical, mounting bracket, secondary terminal box three parts form, it is characterized in that: each single-phase semi-insulated voltage transformer is by insulating protector, device body, low pressure lead-out wire, terminal box forms, the insulating protector that adopts outdoor epoxide resin vacuum cast to form, will be by iron core, high-low pressure winding, in the device body that high-low voltage leads forms is encapsulated in, low pressure lead-out wire is connected with low-voltage lead by screw in terminal box, then the mounting bracket that is welded via channel-section steel is inner integrated draws in secondary terminal box, A, B, tri-single-phase semi-insulated voltage transformers of C are fixed on mounting bracket by fastening bolt is parallel.
2. three-phase and four-line separable assembled epoxy resin pouring dry type voltage transformer according to claim 1, is characterized in that: described insulating protector top is high-tension insulating bushing, and its outer face is provided with two groups of large and small alternate full skirts.
3. three-phase and four-line separable assembled epoxy resin pouring dry type voltage transformer according to claim 1, is characterized in that: described mounting bracket, is provided with six pairs of strip slideways.
4. three-phase and four-line separable assembled epoxy resin pouring dry type voltage transformer according to claim 1, is characterized in that: the iron core of described single-phase semi-insulated voltage transformer is all selected coiled strip oriented silicon steel disc to roll and formed, and core section is symmetrical stairstepping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320505744.XU CN203444967U (en) | 2013-08-14 | 2013-08-14 | Three-phase four-wire split-assembling epoxy resin poured dry voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320505744.XU CN203444967U (en) | 2013-08-14 | 2013-08-14 | Three-phase four-wire split-assembling epoxy resin poured dry voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444967U true CN203444967U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320505744.XU Expired - Lifetime CN203444967U (en) | 2013-08-14 | 2013-08-14 | Three-phase four-wire split-assembling epoxy resin poured dry voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203444967U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283381A (en) * | 2018-09-29 | 2019-01-29 | 广东米勒电气有限公司 | A kind of electronic voltage transducer and application method |
| CN110828112A (en) * | 2019-11-28 | 2020-02-21 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulation three-phase combined transformer |
| CN115863034A (en) * | 2022-11-29 | 2023-03-28 | 浙江天际互感器股份有限公司 | Voltage transformer iron core structure |
-
2013
- 2013-08-14 CN CN201320505744.XU patent/CN203444967U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283381A (en) * | 2018-09-29 | 2019-01-29 | 广东米勒电气有限公司 | A kind of electronic voltage transducer and application method |
| CN110828112A (en) * | 2019-11-28 | 2020-02-21 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulation three-phase combined transformer |
| CN110828112B (en) * | 2019-11-28 | 2023-01-31 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulation three-phase combined transformer |
| CN115863034A (en) * | 2022-11-29 | 2023-03-28 | 浙江天际互感器股份有限公司 | Voltage transformer iron core structure |
| CN115863034B (en) * | 2022-11-29 | 2023-11-10 | 浙江天际互感器股份有限公司 | Voltage transformer iron core structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
|
| CX01 | Expiry of patent term |