CN104143421B - Outdoor totally-enclosed compound inslation support type current transformer - Google Patents
Outdoor totally-enclosed compound inslation support type current transformer Download PDFInfo
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- CN104143421B CN104143421B CN201410393781.5A CN201410393781A CN104143421B CN 104143421 B CN104143421 B CN 104143421B CN 201410393781 A CN201410393781 A CN 201410393781A CN 104143421 B CN104143421 B CN 104143421B
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Abstract
Outdoor totally-enclosed compound inslation support type current transformer, including transformer device body, package casing, silastic material, the outer surface of package casing is compounded with silastic material, and silastic material surface configuration has large and small full skirt；Transformer device body includes low-voltage coil, high-tension coil；Low-voltage coil includes measuring coil, measuring coil and two protection coils；Metering coil and measuring coil are positioned at high-tension coil top, and two protection coils are positioned at high-tension coil bottom；Described low-voltage coil is centre tap.Advantages of the present invention: 1, there is stronger electrical insulation properties and sealing property.2, the tapped design of low-voltage coil makes product have 3 or 4 kind of current ratio, can be that the increase-volume of power consumer system will provide safeguard from now on.3, the design of large and small full skirt can improve transformer appearance along face creep distance, make the gradation for surface pollution of outer surface reach IV grade standard simultaneously.4, conversion patch panel and the sectional area of connecting plate, the current expansion that high-tension coil can be made to pass through reaches 21 kinds of curent changes.
Description
[technical field] the present invention relates to a kind of outdoor totally-enclosed compound inslation support type current transformer, belongs to transformer technical field.
The rated voltage 35kV current transformer installed on the outdoor post of [background technology] 110kV-220kV transformer station (institute); it is applicable to the power circuit that rated frequency is 50Hz or 60Hz; it is converted into secondary low-voltage small area analysis by electromagnetic induction principle, is mainly used in electric energy metrical, current measurement and relay protection.
Domestic existing rated voltage 35kV current transformer can be divided into paper oil insulation, SF6 gas-insulated and poured with epoxy resin insulation from insulation mode, the high-pressure section main body of first two insulation system have employed insulator to increase along face creep age distance, lower body part uses metal shell, body interior uses laminated iron core, generally have that volume is heavy, easy to leak is not easily recycled, easy condensation, produce corona, need periodic maintenance and maintenance, knee voltage is low, long-term operation performance is unstable and transports the defects such as fragile.Employing poured with epoxy resin insulate, and its surface ultraviolet ray irradiates easy efflorescence, and hydrophobicity is poor, easy pollution flashover, is unfavorable for outdoor service condition, thus has severely impacted operation power quality；Owing to intrinsic structure flexibility is poor, motility is not strong, can not meet existing power system ever increasing need.
[summary of the invention] the present invention is directed to the problems referred to above, it is provided that a kind of new type, rated voltage 35kV open air totally-enclosed compound inslation support type current transformer.
A kind of outdoor totally-enclosed compound inslation support type current transformer, including transformer device body, the package casing, silastic material, rosette and the trough-shaped base that are arranged on outside transformer device body, described rosette is arranged on the side of silastic material, trough-shaped base is arranged on the bottom of silastic material, it is characterized in that, package casing is elliptical cylinder-shape, and the outer surface of package casing is compounded with silastic material by insulation adhesive；Silastic material surface configuration has 4 roads to be evenly distributed and the big full skirt of equidistant from distance and little full skirt；Transformer device body includes support, low-voltage coil, high-tension coil；Low-voltage coil includes measuring coil, measuring coil and two protection coils；High-tension coil is rectangle, and metering coil and measuring coil are positioned at high-tension coil top, and two protection coils are positioned at high-tension coil bottom；High-tension coil includes patch panel and connecting plate, and patch panel stretches out from the end of silastic material；Described low-voltage coil is centre tap, and tapped number is 2 or 3.
Wiring hole and P1 labelling it is provided with on described patch panel.
The sectional area of described patch panel is 600-1020mm2。
The sectional area of described connecting plate is 600-1020mm2。
Advantages of the present invention: 1, low-voltage coil is arranged up and down, adds the height of transformer device body, is advantageously implemented the maximization along face creep distance of the silastic material surface；Can also reduce the volume of package casing, be allowed to compact conformation, realize different changes and variation according to current ratio, class of accuracy and capacity, flexibility is strong.2, package casing and silastic material use bonding technology to be composited, silastic material uses high-temperature silicon disulfide rubber injection to form, this kind of insulation mode is used to have stronger electrical insulation properties and sealing property, its ultraviolet radiation resisting, hydrophobicity are strong, resistance to oxidation, ozone-resistant, under high frequency, electric insulating quality is excellent, resistance to electric arc, Inverter fed motor, and has ventilative and to features such as Human Physiology inertia and have self-cleaning.3, the tapped design of low-voltage coil, and tap reaches 2 or 3 so that product of the present invention has 3 or 4 kind of current ratio, has both met a tractor serves several purposes, it is possible to provide safeguard for power consumer system increase-volume from now on, exempts increase expense burden.4, the design of large and small full skirt can be greatly enhanced transformer appearance along face creep distance, creep distance can reach 1680mm；, all can be suitable for for environment pollution severity area, range is extensive simultaneously so that the gradation for surface pollution of outer surface reaches IV grade of (31kV/mm) standard.5, conversion patch panel and the sectional area of connecting plate, the current expansion that high-tension coil can be made to pass through reaches 21 kinds of curent changes between 10-2000A.
[accompanying drawing explanation]
Fig. 1 is partial sectional view of the present invention
Fig. 2 is the left view partial sectional view of Fig. 1
Fig. 3 is mutual inductor interstar connection schematic diagram
In figure: 1, package casing, 2, silastic material, 21, big full skirt; 22, little full skirt, 3, rosette, 4, transformer device body; 41, support, 42, low-voltage coil, 42-1, metering coil; 42-2, measuring coil, 42-3, protection coil, 43, high-tension coil; 43-1, patch panel, 43-11, wiring hole, 43-12, P1 labelling; 43-2, connecting plate, 5, trough-shaped base.
[detailed description of the invention] enforcement to the present invention below in conjunction with the accompanying drawings is described below:
With reference to Fig. 1, Fig. 2 and Fig. 3, outdoor totally-enclosed compound inslation support type current transformer, package casing 1, silastic material 2, rosette 3 and the trough-shaped base 5 including transformer device body 4, being arranged on outside transformer device body 4, rosette 3 is arranged on silastic material 2 side, and trough-shaped base 4 is arranged on the bottom of silastic material 2.
Package casing 1 is elliptical cylinder-shape, and the outer surface of package casing 1 is compounded with silastic material 2 by insulation adhesive, and silastic material 2 uses high-temperature silicon disulfide rubber injection to form, and color can be adjusted according to outdoor environment feature.
Silastic material 2 surface configuration has 4 roads to be evenly distributed and the big full skirt 21 of equidistant from distance and little full skirt 21.
Transformer device body 4 includes support 41, low-voltage coil 42, high-tension coil 43.
Low-voltage coil 42 includes measuring coil 42-1, measuring coil 42-2 and two protection coil 42-3；Low-voltage coil is centre tap, and number of taps is 3.
High-tension coil 43 is rectangle, and metering coil 42-1 and measuring coil 42-2 are positioned at high-tension coil 43 top, and two protection coil 42-3 are positioned at high-tension coil 43 bottom；High-tension coil 43 includes patch panel 43-1 and connecting plate 43-2.
Patch panel 43-1 stretches out from the end of silastic material 2, and patch panel is provided with wiring hole 43-11 and P1 labelling 43-12.
The sectional area of patch panel 43-1 and connecting plate 43-2 is respectively set to 600 mm2、800 mm2、960 mm2、1020mm2, so that the current expansion that high-tension coil 43 passes through reaches 21 kinds of curent changes between 10-2000A.
The present invention is to require a kind of new product of design fully according to national standard; epoxide resin vacuum cast is used to form with silicon rubber composite insulation; utilize electromagnetic conversion principle, make secondary current can reflect the situation of change of high pressure mother current exactly, be transferred to secondary measurement/measurement and protection device.
Above-described embodiment is only and embodiments of the present invention is clearly described, is not the restriction to embodiment.To those of ordinary skill in the art, change and the variation of other multi-form can also be made on the basis of described above, here without also giving exhaustive to all embodiments.And the obvious change that these connotations belonging to the present invention are extended out or variation still fall within protection scope of the present invention.
Claims (4)
- The most outdoor totally-enclosed compound inslation support type current transformer, including transformer device body, the package casing, silastic material, rosette and the trough-shaped base that are arranged on outside transformer device body, described rosette is arranged on the side of silastic material, trough-shaped base is arranged on the bottom of silastic material, it is characterized in that, package casing is elliptical cylinder-shape, and the outer surface of package casing is compounded with silastic material by insulation adhesive；Silastic material surface configuration has 4 roads to be evenly distributed and the big full skirt of equidistant from distance and little full skirt；Transformer device body includes support, low-voltage coil, high-tension coil；Low-voltage coil includes measuring coil, measuring coil and two protection coils；High-tension coil is rectangle, and metering coil and measuring coil are positioned at high-tension coil top, and two protection coils are positioned at high-tension coil bottom；High-tension coil includes patch panel and connecting plate, and patch panel stretches out from the end of silastic material；Described low-voltage coil is centre tap, and tapped number is 2 or 3.
- Open air the most according to claim 1 totally-enclosed compound inslation support type current transformer, it is characterised in that be provided with wiring hole and P1 labelling on described patch panel.
- Open air the most according to claim 1 and 2 totally-enclosed compound inslation support type current transformer, it is characterised in that the sectional area of described patch panel is 600-1020mm2。
- Open air the most according to claim 1 totally-enclosed compound inslation support type current transformer, it is characterised in that the sectional area of described connecting plate is 600-1020mm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410393781.5A CN104143421B (en) | 2014-08-12 | 2014-08-12 | Outdoor totally-enclosed compound inslation support type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410393781.5A CN104143421B (en) | 2014-08-12 | 2014-08-12 | Outdoor totally-enclosed compound inslation support type current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104143421A CN104143421A (en) | 2014-11-12 |
| CN104143421B true CN104143421B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410393781.5A Active CN104143421B (en) | 2014-08-12 | 2014-08-12 | Outdoor totally-enclosed compound inslation support type current transformer |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2046426C1 (en) * | 1992-07-07 | 1995-10-20 | Запорожский завод высоковольтной аппаратуры | Instrument current transformer |
| JPH06302408A (en) * | 1993-04-16 | 1994-10-28 | San'eisha Mfg Co Ltd | Leakage current measurement device of lightning arrester |
| CN201421775Y (en) * | 2009-01-07 | 2010-03-10 | 大连北方互感器集团有限公司 | Outdoor reversed current transformer for electric locomotive |
| CN202205531U (en) * | 2011-08-15 | 2012-04-25 | 大连北方互感器集团有限公司 | Single-phase tapped outdoor discharge coil |
| CN102360891B (en) * | 2011-10-25 | 2013-05-08 | 保定天威集团有限公司 | Multi-transformation ratio current transformer |
| CN203134544U (en) * | 2013-01-09 | 2013-08-14 | 大连金业电力设备有限公司 | Epoxy resin pouring compound type current transformer |
| CN204067026U (en) * | 2014-08-12 | 2014-12-31 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed compound inslation support type current transformer |
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2014
- 2014-08-12 CN CN201410393781.5A patent/CN104143421B/en active Active
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| CN104143421A (en) | 2014-11-12 |
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Effective date of registration: 20181213 Address after: 415001 Six Groups of Chongde Residential Committee of Deshan Town, Changde Economic and Technological Development Zone, Hunan Province Co-patentee after: Dalian North Instrument Transformer Group Co., Ltd. Patentee after: Hunan Dabeihu Transformer Co., Ltd. Address before: 415001 No. 100 Qianming South Road, Changde Economic and Technological Development Zone, Hunan Province Patentee before: Hunan Dabeihu Transformer Co., Ltd. |