CN204067026U - 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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- CN204067026U CN204067026U CN201420452001.5U CN201420452001U CN204067026U CN 204067026 U CN204067026 U CN 204067026U CN 201420452001 U CN201420452001 U CN 201420452001U CN 204067026 U CN204067026 U CN 204067026U
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Abstract
Outdoor totally-enclosed compound inslation support type current transformer, comprise instrument transformer device body, package casing, silastic material, the outer surface of package casing is compounded with silastic material, and silastic material surface is provided with large and small full skirt; Instrument transformer device body comprises low-voltage coil, high-tension coil; Low-voltage coil comprises metering 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.Advantage of the present utility model: 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 power consumer system increase-volume from now on and provides safeguard.3, the design of large and small full skirt can improve instrument transformer appearance along face creep distance, make the gradation for surface pollution of outer surface reach IV grade standard simultaneously.4, convert the sectional area of terminal block and 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 utility model relates to a kind of outdoor totally-enclosed compound inslation support type current transformer, belongs to instrument transformer technical field.
The rated voltage 35kV current transformer that [background technology] 110kV-220kV transformer station (institute) outdoor post is installed; be applicable to the power circuit that rated frequency is 50Hz or 60Hz; convert secondary low-voltage small area analysis to by electromagnetic induction principle, be mainly used in electric energy metrical, current measurement and relaying protection.
Domestic existing rated voltage 35kV current transformer can be divided into paper oil insulation, SF6 gas-insulated and poured with epoxy resin to insulate from insulation mode, the high-pressure section main body of first two insulation system have employed insulator to increase along face creepage distance, lower body part adopts metal shell, body interior adopts laminated iron core, ubiquity volume is heavy, easy to leak not easily reclaims, easily condensation, produce corona, need periodic maintenance and maintenance, knee voltage is low, long-term operation performance is unstable and transport 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 conditions, thus seriously have impact on operation power quality; Because intrinsic structure flexibility is poor, flexibility is not strong, can not meet the ever-increasing needs of existing electric power system.
[summary of the invention] the utility model for the problems referred to above, provide a kind of new type, the totally-enclosed compound inslation support type current transformer in open air of rated voltage 35kV.
A kind of outdoor totally-enclosed compound inslation support type current transformer, comprise instrument transformer device body, package casing, silastic material, terminal box and the trough-shaped base be arranged on outside instrument transformer device body, described set of terminal box is in 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 is provided with 4 roads and is evenly distributed and the large full skirt of equidistant from distance and little full skirt; Instrument transformer device body comprises support, low-voltage coil, high-tension coil; Low-voltage coil comprises metering 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 comprises terminal block and connecting plate, and terminal block stretches out from the end of silastic material; Described low-voltage coil is centre tap, and tapped number is 2 or 3.
Described terminal block is provided with wiring hole and P1 mark.
The sectional area of described terminal block is 600-1020mm
2.
The sectional area of described connecting plate is 600-1020mm
2.
Advantage of the present utility model: 1, low-voltage coil is arranged up and down, adds the height of instrument transformer device body, is conducive to realizing the maximization of silastic material surface along face creep distance; Can also reduce the volume of package casing, make it 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 adopt bonding technology to be composited, silastic material adopts high-temperature silicon disulfide rubber injection to form, this kind of insulation mode is adopted 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 have self-cleaning to features such as Human Physiology inertia.3, the tapped design of low-voltage coil, and tap reaches 2 or 3, makes the utility model product have 3 or 4 kind of current ratio, both meets a tractor serves several purposes, also can be power consumer system increase-volume from now on and provides safeguard, and exempts increase expense burden.4、
The design of large and small full skirt can greatly improve instrument transformer appearance along face creep distance, creep distance can reach 1680mm; Meanwhile, make the gradation for surface pollution of outer surface reach IV grade of (31kV/mm) standard, all can be suitable for for environment pollution severity area, the scope of application is extensive.5, convert the sectional area of terminal block and 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 the utility model partial sectional view
Fig. 2 is that partial sectional view is looked on a left side of Fig. 1
Fig. 3 is mutual inductor interstar connection schematic diagram
In figure: 1, package casing, 2, silastic material, 21, large full skirt; 22, little full skirt, 3, terminal box, 4, instrument 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, terminal block, 43-11, wiring hole, 43-12, P1 mark; 43-2, connecting plate, 5, trough-shaped base.
[embodiment] is described below enforcement of the present utility model below in conjunction with accompanying drawing:
With reference to Fig. 1, Fig. 2 and Fig. 3, outdoor totally-enclosed compound inslation support type current transformer, comprise instrument transformer device body 4, package casing 1, silastic material 2, terminal box 3 and the trough-shaped base 5 be arranged on outside instrument transformer device body 4, terminal box 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 adopts high-temperature silicon disulfide rubber to inject and forms, and color can adjust according to outdoor environment feature.
Silastic material 2 surface is provided with 4 roads and is evenly distributed and the large full skirt 21 of equidistant from distance and little full skirt 21.
Instrument transformer device body 4 comprises support 41, low-voltage coil 42, high-tension coil 43.
Low-voltage coil 42 comprises metering 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 is 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 comprises terminal block 43-1 and connecting plate 43-2.
Terminal block 43-1 stretches out from the end of silastic material 2, terminal block is provided with wiring hole 43-11 and P1 and marks 43-12.
The sectional area of terminal block 43-1 and connecting plate 43-2 is set to 600 mm respectively
2, 800 mm
2, 960 mm
2, 1020mm
2, thus the current expansion that high-tension coil 43 is passed through reaches 21 kinds of curent changes between 10-2000A.
The utility model is a kind of new product requiring design completely according to national standard; epoxide resin vacuum cast is adopted 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 protective device.
Above-described embodiment is only and execution mode of the present utility model is clearly described, is not the restriction to execution mode.To those of ordinary skill in the art, above-mentioned explanation basis can also be made other multi-form change and variation, here without the need to also giving exhaustive to all embodiments.And these belong to connotation of the present utility model the apparent change of extending out or variation still belong to protection range of the present utility model.
Claims (4)
1. outdoor totally-enclosed compound inslation support type current transformer, comprise instrument transformer device body, package casing, silastic material, terminal box and the trough-shaped base be arranged on outside instrument transformer device body, described set of terminal box is in 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 is provided with 4 roads and is evenly distributed and the large full skirt of equidistant from distance and little full skirt; Instrument transformer device body comprises support, low-voltage coil, high-tension coil; Low-voltage coil comprises metering 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 comprises terminal block and connecting plate, and terminal block stretches out from the end of silastic material; Described low-voltage coil is centre tap, and tapped number is 2 or 3.
2. the totally-enclosed compound inslation support type current transformer in open air according to claim 1, is characterized in that, described terminal block is provided with wiring hole and P1 mark.
3. the totally-enclosed compound inslation support type current transformer in open air according to claim 1 and 2, is characterized in that, the sectional area of described terminal block is 600-1020mm
2.
4. the totally-enclosed compound inslation support type current transformer in open air according to claim 1, is characterized in that, the sectional area of described connecting plate is 600-1020mm
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452001.5U CN204067026U (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 |
|---|---|---|---|
| CN201420452001.5U CN204067026U (en) | 2014-08-12 | 2014-08-12 | Outdoor totally-enclosed compound inslation support type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204067026U true CN204067026U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420452001.5U Withdrawn - After Issue CN204067026U (en) | 2014-08-12 | 2014-08-12 | Outdoor totally-enclosed compound inslation support type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204067026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143421A (en) * | 2014-08-12 | 2014-11-12 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulated supporter type current transformer |
-
2014
- 2014-08-12 CN CN201420452001.5U patent/CN204067026U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143421A (en) * | 2014-08-12 | 2014-11-12 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulated supporter type current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141231 Effective date of abandoning: 20160928 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |