CN201438415U - Ten kilovolt self-balancing anti-resonant three-phase four-wire combined dry-type mutual inductor - Google Patents
Ten kilovolt self-balancing anti-resonant three-phase four-wire combined dry-type mutual inductor Download PDFInfo
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- CN201438415U CN201438415U CN2008201844553U CN200820184455U CN201438415U CN 201438415 U CN201438415 U CN 201438415U CN 2008201844553 U CN2008201844553 U CN 2008201844553U CN 200820184455 U CN200820184455 U CN 200820184455U CN 201438415 U CN201438415 U CN 201438415U
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Abstract
The utility model discloses A, B, C three-phase monomer current mutual inductors and A, B, C three-phase monomer voltage mutual inductors, wherein the A, B, C three-phase monomer current mutual inductors respectively comprise a primary winding 9, a secondary coil 11 and a major insulating medium 12, and the A, B, C three-phase monomer voltage mutual inductors comprise an iron core 5, a primary winding 7, a secondary winding 6 and an insulating medium 8; the six monomer mutual inductors are reasonably fixed on a channel steel bracket 3, four flying rings 4 convenient for product transportation and product installation are mounted on the channel steel bracket, and with reasonable placement of products and special design, the utility model has the self-balancing anti-resonant function; and in addition, a secondary-current outgoing line and a secondary-voltage outgoing line ultimately gather into a secondary outlet box 1, wiring terminal strips in different colors are uniformly distributed inside the outlet box, and a metal cable waterproof adapter 2 is adown installed at a wire outlet on the lower part of the outlet box 1 and acts the parts of fastening cables, sealing, and repelling water, therefore the utility is suitable for long-term safe and reliable operation of outdoor products.
Description
Technical field the utility model belongs to the high voltage power transformation equipment in the electric power system, makes electric current, voltage measurement and relaying protection and insulating monitoring and use in 10kV and following mid point non-effectively earthed system (insulation system and resistance grounded system).
Background technology is present, that plain edition three-phase and four-line combination transformer is generally is single-phase, monomer provides, poor for the anti-resonance effect of entire combination, and owing to product placement reason improperly, influencing each other between electric current and the voltage can cause three-phase current voltage core interior magnetic flux distribution unreasonable, actual metered is inaccurate, between this development and Design the utility model.
Summary of the invention the utlity model has the anti-resonance function of self-balancing, and influencing each other between electric current and the voltage is very little, and be almost nil, in resistance grounded system, has the function of anti-internal overvoltage in addition; In insulation system, has anti-ferro resonance resistance oscillation functions.
In order to achieve the above object, the utility model has constituted the three-phase and four-line product by three single-phase potential transformers and three monophase current instrument transformers, six monomer instrument transformer dielectrics are that outdoor cycloaliphatic epoxy resin cast forms, for increase product along the face creepage distance, and reaching the requirement of IV level gradation for surface pollution, voltage transformer the first half is made 3 layers of full skirt that size is alternate; 2 layers of full skirt that size is alternate are made in the bottom of current transformer, and small product size is little, compact conformation.Three single-phase potential transformers of this utility model product all adopt all insulation structure, and its high pressure winding is divided into the coiling of two sections polyester paint envelope curves, and every section end face design has screen, and the coiling layer insulation is a high-quality PMP paper; Low-pressure section is that secondary winding is wound on " R " shape iron core of special substance, three single-phase potential transformer magnetic flux densities of the utility model product, saturation coefficient＞3.2, the unique function that has possessed anti-resonance fully, the appropriate design of product with put that to make the utility model possess the iron core magnetic flux distribution reasonable, various losses are very little, and self-balancing ability is very strong.
The utility model is on integral layout, the separate unit product rationally is placed on the firm support of groove, in order to reach anti-electricity-theft purpose, the secondary outlet is sealed up at base plate interior, and finally converge in the secondary outlet box, be evenly distributed with connecting terminal block in the secondary outlet box, have the connection principle schematic diagram in the outlet lid, the outer product nameplate that has of lid, wiring is accurate, simple, convenient, fast, secondary outlet box exit has the metallic cable water joint, and the metallic cable water joint plays fastening cable, the effect of water-tight.
Install, transport for the ease of product, the lifting bolt of 4 M10 is housed on the product channel-section steel support.
The beneficial effects of the utility model are to have the anti-resonance function of self-balancing.
The utility model is described in more detail below in conjunction with accompanying drawing for description of drawings.
Fig. 1 is a front view of the present utility model
Fig. 2 be end view of the present utility model and A to the voltage cutaway view, B is to the electric current cutaway view
Fig. 3 is a vertical view of the present utility model
Winding of 1 secondary outlet box 2 metallic cable water joints, 3 channel-section steel support 4 suspension ring, 5 iron core 6 voltage secondary winding, 7 a voltages winding 8 main insulation media, 9 electric currents 10 main insulation media 11 electric current secondary coils 12 main insulation media 13 supports 14 electric currents are installed inserts 15 electric current secondary lead wires 16N end busbar 17 trip bolts among the figure
Embodiment such as Fig. 1, Fig. 2, shown in Figure 3, A, B, winding of three identical monophase current instrument transformers of C 9 partly turn to rectangle with secondary coil 11 interlinkages, one time winding 9 links to each other with plate shape busbar by wire clamp, secondary coil 11 is sleeved on the rectangular section of a winding 9, and the distance and the shape position error of the main insulation medium 10 between winding 9 and the secondary coil 11 are regulated by support 13; A, B, three identical single-phase potential transformer secondary winding 6 of C are sleeved on iron core 5 outsides, and the two sections coilings in 7 fens of a winding are sleeved on the outside of secondary winding 6 then, and each winding outside is provided with screen.
The utility model main insulation medium 8,12 adopts outdoor cycloaliphatic epoxy resin cast to form, for increase product along the face creepage distance, and reach the requirement of IV level gradation for surface pollution, voltage transformer the first half is made 3 layers of full skirt that size is alternate, its cross section is circular, the ratio 1.25 of gamp width and umbellule width, the wide ratio with the umbrella distance of umbrella is 0.8; 2 layers of full skirt that size is alternate are made in the bottom of current transformer, and its cross section is circular, the ratio 1.25 of gamp width and umbellule width, and the wide ratio with the umbrella distance of umbrella is 0.8, electric current secondary lead wires 15 is drawn on the flange face of product undercut.Six single-phase transformers of this utility model product are installed on the channel-section steel support 3, secondary lead wires is sealed up at internal stent, and finally converge in the secondary outlet box 1, be evenly distributed with connecting terminal block in the outlet box, have the connection principle schematic diagram in the outlet lid, the outer product nameplate that has of lid, wiring accurately, conveniently, secondary outlet box exit has two metallic cable water joints 2 down, and the metallic cable water joint plays fastening cable, the effect of water-tight; Be convenient to Product transport, installation in addition, on channel-section steel support 3, be equipped with four suspension ring 4 are installed.
Claims (2)
1. a 10kV self-balancing is prevented resonance three-phase and four-line composite dry instrument transformer, make three single-phase potential transformers of 3 layers of alternate full skirt of size respectively by the first half, three monophase current instrument transformers making 2 layers of alternate full skirt of size with the bottom constitute, three single-phase potential transformer all insulation structures, flux density saturation coefficient＞3.2, it is characterized in that: six single-phase transformers rationally are fixed on the channel-section steel support, and 4 suspension ring being convenient to Product transport, installation are housed on the channel-section steel support; Secondary current, voltage lead-out wire finally converge in the secondary outlet box, are evenly distributed with connecting terminal block in the outlet box, and the metallic cable water joint is equipped with at the line outlet place of outlet box bottom.
2. 10kV self-balancing according to claim 1 is prevented resonance three-phase and four-line composite dry instrument transformer, and it is characterized in that: secondary outlet box exit is provided with two metallic cable water joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201844553U CN201438415U (en) | 2008-12-30 | 2008-12-30 | Ten kilovolt self-balancing anti-resonant three-phase four-wire combined dry-type mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201844553U CN201438415U (en) | 2008-12-30 | 2008-12-30 | Ten kilovolt self-balancing anti-resonant three-phase four-wire combined dry-type mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201438415U true CN201438415U (en) | 2010-04-14 |
Family
ID=42400387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008201844553U Expired - Lifetime CN201438415U (en) | 2008-12-30 | 2008-12-30 | Ten kilovolt self-balancing anti-resonant three-phase four-wire combined dry-type mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201438415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2008
- 2008-12-30 CN CN2008201844553U patent/CN201438415U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100414 |