CN202758730U - Indoor single-phase large-capacity electromagnetic voltage transformer - Google Patents
Indoor single-phase large-capacity electromagnetic voltage transformer Download PDFInfo
- Publication number
- CN202758730U CN202758730U CN201220432001.XU CN201220432001U CN202758730U CN 202758730 U CN202758730 U CN 202758730U CN 201220432001 U CN201220432001 U CN 201220432001U CN 202758730 U CN202758730 U CN 202758730U
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- China
- Prior art keywords
- indoor single
- base plate
- protective cover
- large capacity
- ground connection
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Abstract
An indoor single-phase large-capacity electromagnetic voltage transformer comprises a base body, a protective cover, screws with cheese heads and sealing holes, a base plate and a high voltage primary terminal and is characterized in that the base body, the protective cover, the screws with the cheese heads and the sealing holes, the base plate and the high voltage primary terminal are assembled according to a structure and form a complete-sealing pillar-type whole. The base body is formed by vacuum pouring of a transformer body, a ball head embedded nut, a secondary protective cover embedded nut and a grading ring by adopting red epoxy resin mixture. The transformer body is fixedly formed by a U-shaped iron core, a concentric cylinder-type secondary winding sleeved on the core column of the U-shaped iron core, a primary winding with well welded primary leads and clamping elements of the transformer body by stainless steel throat locks. The indoor single-phase large-capacity electromagnetic voltage transformer has the advantages of being compact in structure, convenient to install, anti-pollution in flashover, large in secondary capacity, high in accuracy grade, good in electrical insulation performance under high frequency, arc-resistant, corona-resistant and long in operation service life.
Description
Technical field
The utility model relates to electrical equipment technical field, specifically the large capacity ground connection of a kind of indoor single-phase electromagnetic potential transformer.
Background technology
External single-phase indoor, the electrical outdoor magnetic-type voltage transformer of producing adopts poured with epoxy resin to form substantially at present, its inner device body does not carry out good device body buffering shielding wrapping measure, stacked design or the volume iron core of adopting unshakable in one's determination, the cross section is rectangular, and effective cross-section unshakable in one's determination can not be implemented maximization.Limited along the face creepage distance, under the larger condition of low temperature and humidity easily condensation, produce corona.Instrument transformer body crackle easily occurs under high cold service causes insulator to puncture.
The indoor single-phase electromagnetic potential transformer that domestic existing electric power system is used, the kind model is more, and rated voltage 10kV is that size adopts different contour structures by measure basically.Its profile is simple, and capacity is low, and then volume is larger if capacity with this new product is namely arranged, and surface creepage distance limited (only reaching II level gradation for surface pollution) although it is less to roll up cross section classification unshakable in one's determination, is rolled up effective cross-section unshakable in one's determination less, can not implement large capacity requirement.And the easy condensation of the environment that the temperature difference is larger, generation corona.Insulating wrapping is simple, instrument transformer body crackle easily occurs under high cold service cause insulator to puncture.
The utility model content
For the deficiency that above-mentioned technical problem exists, the purpose of this utility model provides a kind of compact conformation, easy for installation, resistant is dodged, the large capacity ground connection of secondary indoor single-phase capacious electromagnetic potential transformer.
The technical solution of the utility model is: the large capacity ground connection of indoor single-phase electromagnetic potential transformer, comprise matrix, protective cover, socket cap strap sealing of hole screw, base plate, terminal of high pressure, it is characterized in that: matrix and protective cover, socket cap strap sealing of hole screw, base plate and terminal of high pressure form the integral body of a totally-enclosed column support type by the structure general assembly; Matrix adopts red mixture of epoxy resins vacuum pouring to form by device body, bulb embedded nut, secondary protection cover embedded nut, grading ring; The device body is shaped as by the locking of stainless steel larynx by U-shaped iron core, the winding that is inserted in concentric cylinder type secondary winding and the good once lead-in wire of welding on the stem of U-shaped iron core and device body folder.
On the described base plate earth stud is installed.
Terminal bottom of described high pressure is provided with full skirt.
The bottom of described winding both sides is provided with stretches out equidistant attached full skirt to both sides.
The utility model has the advantages that: the one, the U-iron heart that adopts divides 6 kinds of width 11 grades of iron cores, can effectively implement to roll up the core section maximization, and assurance the utility model can be realized enough large capacity and precision.The vacuum impregnation processing is carried out on U-shaped surface unshakable in one's determination and follow-up buffering shielding wrapping can guarantee effectively that the dispersed factor of technique causes hydraulic performance decline unshakable in one's determination, guarantees the consistency of product quality.Two is that winding layer insulation proposes first and adopts minutes 3 sections hierarchical layer insulation system, and the first and last layer adopts electrostatic shielding, can reduce effectively that field intensity distributes between high pressure zone; The grading ring that terminal bottom of high pressure arranges also can effectively improve high voltage electric field and evenly distribute.Can improve the initial sum extinction voltage of partial discharge by these two measures.The 3rd, full skirt and attached full skirt that body portion increases make the utility model be higher than the requirement of national Specification gradation for surface pollution IV level heavy pollution far away along the face creepage distance, reach 43mm/kV, can satisfy the varying environment area and use, and height above sea level can reach more than 4000 meters.The utility model compact conformation, easy for installation, resistant are dodged, the secondary capacity is large, accuracy class is high, and electric insulating quality is good under the high frequency, anti-electric arc, anti-corona, and service life is high.
Description of drawings
Fig. 1 is internal structure front view of the present utility model.
Fig. 2 is internal structure left view of the present utility model.
Fig. 3 is external structure vertical view of the present utility model.
Embodiment
Now by reference to the accompanying drawings, technology contents of the present utility model is described further.
As shown in Figure 1, 2, 3, matrix 9 and protective cover 10, socket cap strap sealing of hole screw 11, base plate 13 and terminal of high pressure 14 integral body by a totally-enclosed column support type of structure general assembly formation; Matrix 9 adopts red mixture of epoxy resins vacuum pouring to form by device body 5, bulb embedded nut 6, secondary protection cover embedded nut 7, grading ring 8; Device body 5 is shaped as by the locking of stainless steel larynx by U-shaped winding 3 and device body folder 4 unshakable in one's determination 1, that be inserted in concentric cylinder type secondary winding 2 and the good once lead-in wire of welding on U-shaped unshakable in one's determination 1 the stem.On the described base plate 13 earth stud 12 is installed.Terminal 14 bottoms of described high pressure are provided with full skirt 15.The bottom of described winding 3 both sides is provided with stretches out equidistant attached full skirt 16 to both sides.
Claims (4)
1. the large capacity ground connection of indoor single-phase electromagnetic potential transformer, comprise matrix (9), protective cover (10), socket cap strap sealing of hole screw (11), base plate (13), a terminal of high pressure (14), it is characterized in that: matrix (9) and protective cover (10), socket cap strap sealing of hole screw (11), base plate (13) and a terminal of high pressure (14) integral body by a totally-enclosed column support type of structure general assembly formation; Matrix (9) adopts red mixture of epoxy resins vacuum pouring to form by device body (5), bulb embedded nut (6), secondary protection cover embedded nut (7), grading ring (8); Device body (5) is shaped as by the locking of stainless steel larynx by U-shaped iron core (1), the winding (3) and the device body folder (4) that are inserted in concentric cylinder type secondary winding (2) and the good once lead-in wire of welding on the stem of U-shaped iron core (1).
2. the large capacity ground connection of indoor single-phase according to claim 1 electromagnetic potential transformer is characterized in that: earth stud (12) is installed on the described base plate (13).
3. the large capacity ground connection of indoor single-phase according to claim 1 electromagnetic potential transformer, it is characterized in that: a terminal of described high pressure (14) bottom is provided with full skirt (15).
4. the large capacity ground connection of indoor single-phase according to claim 1 electromagnetic potential transformer is characterized in that: the bottom of a described winding (3) both sides is provided with stretches out equidistant attached full skirt (16) to both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220432001.XU CN202758730U (en) | 2012-08-29 | 2012-08-29 | Indoor single-phase large-capacity electromagnetic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220432001.XU CN202758730U (en) | 2012-08-29 | 2012-08-29 | Indoor single-phase large-capacity electromagnetic voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758730U true CN202758730U (en) | 2013-02-27 |
Family
ID=47737898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220432001.XU Expired - Lifetime CN202758730U (en) | 2012-08-29 | 2012-08-29 | Indoor single-phase large-capacity electromagnetic voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151156A (en) * | 2013-03-27 | 2013-06-12 | 湖南大北互互感器有限公司 | Indoor single phase grounded voltage transformer with high precision and adjustable transformation ratio |
| CN105280365A (en) * | 2015-10-26 | 2016-01-27 | 常州欧瑞电气有限公司 | General voltage transformer for 10-20kV system |
-
2012
- 2012-08-29 CN CN201220432001.XU patent/CN202758730U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151156A (en) * | 2013-03-27 | 2013-06-12 | 湖南大北互互感器有限公司 | Indoor single phase grounded voltage transformer with high precision and adjustable transformation ratio |
| CN105280365A (en) * | 2015-10-26 | 2016-01-27 | 常州欧瑞电气有限公司 | General voltage transformer for 10-20kV system |
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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: 20130227 |
|
| CX01 | Expiry of patent term |