CN2502385Y - 35 KV outdoor dry voltage transformer - Google Patents
35 KV outdoor dry voltage transformer Download PDFInfo
- Publication number
- CN2502385Y CN2502385Y CN 01266912 CN01266912U CN2502385Y CN 2502385 Y CN2502385 Y CN 2502385Y CN 01266912 CN01266912 CN 01266912 CN 01266912 U CN01266912 U CN 01266912U CN 2502385 Y CN2502385 Y CN 2502385Y
- Authority
- CN
- China
- Prior art keywords
- winding
- secondary winding
- insulating protector
- voltage transformer
- epoxy resin
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 claims abstract description 20
- 239000003822 epoxy resin Substances 0.000 claims abstract description 9
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000001012 protector Effects 0.000 claims description 11
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000008397 galvanized steel Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model discloses a 35 kV outdoor dry-type potential transformer which is composed of an iron core (3), a primary winding (2), a secondary winding (5) and an insulation protecting body (4). The insulation protecting body forms by adopting outdoor epoxy resin to be casted, the secondary winding adopts pagoda-shaped coiling, a static electric screen (8) and an equalizing ring (9) are designed. The utility model has simple structure, convenient installation, no oil, whole sealing and no need of maintaining, which can be installed at the load centre in the open air directly.
Description
The utility model belongs to the mesohigh converting equipment in the electric power system, is the crucial signal transmission equipment of electric power system electric energy metrical and relaying protection.
At present, plain edition oil immersed type voltage transformer is suitable for using indoor and outdoor, and its insulation system mostly is insulating paper and transformer oil compound inslation, and volume is big and heavy, and inflammable, contaminated environment can not be directly installed on load center.Chinese patent ZL 98251827.7 discloses a kind of " outdoor type dry-type voltage inductor "; this voltage transformer adopts the insulating protective layer of the outdoor type epoxy resin of moulding by casting as voltage transformer; its bushing surface casting becomes full skirt corrugated; special-purpose closed terminal box is installed at secondary leading-out terminal place; miniaturization, no oiling, totally-enclosed, non-maintaining, unattended operation have been reached; and can expose the purpose of installation in the open; but this instrument transformer only can be applicable to the electrical network of 10kV voltage, can be breakdown when moving on 35kV voltage electrical network.
The purpose of this utility model is to provide a kind of and can uses out of doors, again the voltage transformer that can move on the 35kV electrical network.
In order to achieve the above object; the utility model adopts outdoor type epoxy resin to pour into the insulating protector of voltage transformer under vacuum environment; for increase bushing to ground along the face creepage distance; the bushing outer surface is poured into the alternate full skirt of 4-8 layer size; gamp width a is 1.4-1.6 with the ratio of umbellule width b, and its cross section is circular.For increase between the bushing along the face creepage distance, increased the size between the bushing.
In order to overcome the influence that voltage improves and electric field is relatively concentrated, and make full use of the useful space, inferior winding employing pagoda type structure.In order to reduce the end field intensity of a winding, the utility model has increased electrostatic shielding, has increased grading ring in the electrostatic shielding outside, has reduced the field intensity of electrostatic shielding end to iron core, improve the power frequency of instrument transformer so greatly and impacted dielectric strength, guaranteed the requirement of product partial discharge.
Because the utility model adopts outdoor type epoxy resin to replace plain edition epoxy resin to make insulating protective layer; make voltage transformer have the ability of ultraviolet radiation resisting, weathering resistance erosion; no oiling, fire-retardant, antipollution purpose have been realized, long-time running under can be the out of doors full weather conditions.Compare with the 10kV voltage transformer; the utility model is owing to adopted the insulating protector of special shape; one time winding changes the pagoda type structure into and increases electrostatic shielding and grading ring; more reasonable on insulation system like this; electric field strength a little less than, can guarantee the requirement of the electrical insulation properties that the utility model moves on the 35kV electrical network.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a front view of the present utility model.
Fig. 2 is a vertical view of the present utility model.
Fig. 3 is an end view of the present utility model.
As Fig. 1, Fig. 2 and shown in Figure 3, secondary winding 5 is sleeved on the iron core 3, and winding 2 adopts the pagoda type structures, is sleeved on secondary winding 5 outsides, and the space between winding 2 and the secondary winding 5 isolates with the insulating protector 4 of outdoor type poured with epoxy resin.In the outside of a winding 2 electrostatic shielding 8 is installed, grading ring 9 is arranged in the electrostatic shielding outside.
Adopt outdoor type epoxy resin under vacuum environment, to pour into a mould the insulating protector 4 of voltage transformer; for increase by 1 pair of ground of bushing along the face creepage distance; bushing 1 outer surface is poured into 6 layers of full skirt that size is alternate; gamp width a is 1.5 with the ratio of umbellule width b, and its cross section is circular.Insulating protector 4 lower front side are equipped with the secondary connection box 6 of a cast aluminium all-sealed structure, can effectively prevent to avenge, the intervention of material such as rain, dirt.Insulating protector 4 bottoms are equipped with the mounting panel 7 that galvanized steel plain sheet is made.
Claims (3)
1. 35kV outdoor type dry-type voltage inductor; comprise by iron core (3); a winding (2); secondary winding (5); bushing (1) and insulating protector (4) are formed; it is characterized in that: secondary winding (5) is sleeved on the iron core (3); a winding (2) adopts the pagoda type structure; be sleeved on secondary winding (2) outside; space between a winding (2) and the secondary winding (5) isolates with the insulating protector (4) of outdoor type poured with epoxy resin; in the outside of a winding (2) electrostatic shielding (8) is installed; in the electrostatic shielding outside grading ring (9) is arranged; insulating protector (4) adopts outdoor type epoxy resin to pour into a mould under vacuum environment; the outer surface of bushing (1) is poured into the alternate full skirt of 4-8 layer size; gamp width a is 1.4-1.6 with the ratio of umbellule width b, and its cross section is circular.
2. voltage transformer as claimed in claim 1, it is characterized in that: the lower front side of insulating protector (4) is equipped with the secondary connection box (6) of a cast aluminium all-sealed structure.
3. voltage transformer as claimed in claim 1 is characterized in that: the bottom of insulating protector (4) is equipped with the mounting panel (7) that galvanized steel plain sheet is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266912 CN2502385Y (en) | 2001-09-17 | 2001-09-17 | 35 KV outdoor dry voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266912 CN2502385Y (en) | 2001-09-17 | 2001-09-17 | 35 KV outdoor dry voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2502385Y true CN2502385Y (en) | 2002-07-24 |
Family
ID=33673451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01266912 Expired - Lifetime CN2502385Y (en) | 2001-09-17 | 2001-09-17 | 35 KV outdoor dry voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2502385Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2466473C1 (en) * | 2011-07-21 | 2012-11-10 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") | Electrostatic screen |
-
2001
- 2001-09-17 CN CN 01266912 patent/CN2502385Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2466473C1 (en) * | 2011-07-21 | 2012-11-10 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") | Electrostatic screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: * RESIDENTIAL QUATER, NO. 28, JINGJIJISHU DEVELOPM Free format text: FORMER NAME OR ADDRESS: NO. 19, LIAONING PROV STREET, DALIAN CITY DEVELOPMENT AREA, LIAONING PROVINCE |
|
| CP03 | Change of name, title or address |
Patentee address after: District 28, Dalian economic and Technological Development Zone Patentee address before: No. 19, Liaoning street, Dalian Development Zone, Liaoning, China |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110917 Granted publication date: 20020724 |
|
| DD01 | Delivery of document by public notice |
Addressee: Jiang Demin Document name: Notification of Expiration of Patent Right Duration |