CN207488325U - Double shield electrostatic isolation transformer - Google Patents
Double shield electrostatic isolation transformer Download PDFInfo
- Publication number
- CN207488325U CN207488325U CN201721737905.2U CN201721737905U CN207488325U CN 207488325 U CN207488325 U CN 207488325U CN 201721737905 U CN201721737905 U CN 201721737905U CN 207488325 U CN207488325 U CN 207488325U
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- CN
- China
- Prior art keywords
- housing shroud
- shroud cover
- shield
- isolation transformer
- electrostatic isolation
- 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 - Fee Related
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- Testing Relating To Insulation (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The utility model is related to a kind of double shield electrostatic isolation transformers, belong to transformer technology field.The transformer includes winding coil, supporting rack, pedestal and housing shroud cover, housing shroud cover top connects arc grading shield, its cambered surface angular range is 45 ° to 270 °, with ground terminal, the distance of base top surface to housing shroud cover bottom surface is not less than 10 centimetres for housing shroud cover and arc grading shield.During local discharge test, which can shield, the disturbing factor in isolated power supply, improve the accuracy of the efficiency and result of local discharge test.
Description
Technical field
The utility model is related to a kind of double shield electrostatic isolation transformers, belong to transformer technology field.
Background technology
High-voltage cross-linking polythene cable has electrical property and hot property, and simple in structure, and the manufacturing cycle is short, is widely used in electricity
Each voltage class of Force system, and constantly develop to super-pressure and extra-high voltage field.But high-voltage cross-linking polythene cable exists
In manufacturing process, the problem of due to technique, the insulation hidden danger such as bubble may be formed inside cable, is easily led in use
Cause breakdown.Therefore it needs to test to it before cable manufacture.The currently used method of inspection is partial discharge test, still
Since the local discharge signal of high-tension cable is faint, waveform is complicated and changeable, easily flooded by ambient noise and electromagnetic drying noise,
It causes inspection result inaccurate, examines speed slower.
It is currently for the main countermeasure of electromagnetic interference that power supply brings the local discharge test of high-tension cable, using isolation
Transformer, effect are make primary side and secondary side electrical completely insulated, are also isolated the circuit.In addition, utilize its iron core
High-frequency loss it is big the characteristics of, so as to which high frequency spurs be inhibited to be passed to control loop.This method can meet primary side and secondary side
Electric insulation requirement, but it is limited to the inhibition of power supply clutter.
Invention content
The purpose of this utility model be using double shield structure, provide it is a kind of shield, disturbing factor in isolated power supply
Double shield electrostatic isolation transformer reduces the influences of the disturbing factors to experiment such as clutter in local discharge test in power supply, raising office
Put the accuracy and efficiency of result of the test.
Double shield electrostatic isolation transformer described in the utility model, including winding coil, supporting rack, pedestal and shell screen
Cover cover, housing shroud cover top connection arc grading shield.
Arc grading shield connects the first ground terminal, and cambered surface angular range is 45 ° to 270 °.
Housing shroud cover connects the second ground terminal.
Housing shroud cover is full-closed structure.
The distance of housing shroud cover bottom surface to base top surface is not less than 10 centimetres.
During experiment, double shield electrostatic isolation transformer accesses terminal and connects power supply, leading-out terminal connection by cable
Hookup winding coil carries out insulation processing, while filtration fraction power supply clutter to primary side and the electrical of secondary side.Shell
Shielding case is enclosed construction, connection arc grading shield catching portion interference wave and electrostatic, and passes through the first ground terminal and second
Ground terminal is by electrostatic grounding.
Compared with prior art, the utility model has the advantages that：
Using the shielding of double shield electrostatic isolation transformer, isolation features, the efficiency of partial discharge detection experiment and accurate is improved
Degree.
Description of the drawings
Fig. 1, double shield electrostatic isolation transformer device structure schematic diagram
Wherein, 1, housing shroud cover, 2, winding coil, 3, supporting rack, 4, arc grading shield, 5, ground terminal 2,6, ground connection
Terminal 1,7, pedestal.
Specific embodiment
The utility model is further described with reference to embodiment.
Embodiment 1
Double shield electrostatic isolation transformer described in the present embodiment, including winding coil 2, supporting rack 3, pedestal 7 and shell
Shielding case 1,1 top of housing shroud cover connection arc grading shield 4.
Arc grading shield 4 connects the first ground terminal 6, and cambered surface angular range is 45 °.
Housing shroud cover 1 connects the second ground terminal 5.
Housing shroud cover 1 is full-closed structure.
1 bottom surface of housing shroud cover is to 15 centimetres of the distance of 7 top surface of pedestal.
During experiment, double shield electrostatic isolation transformer accesses terminal and connects power supply, leading-out terminal connection by cable
Hookup winding coil 2 carries out insulation processing, while filtration fraction power supply clutter to primary side and the electrical of secondary side.Shell
Shielding case 1 is enclosed construction, 4 catching portion interference wave of connection arc grading shield and electrostatic, and passes through the first ground terminal 6 and the
Two ground terminals 5 are by electrostatic grounding.
Embodiment 2
Double shield electrostatic isolation transformer described in the present embodiment, including winding coil 2, supporting rack 3, pedestal 7 and shell
Shielding case 1,1 top of housing shroud cover connection arc grading shield 4.
Arc grading shield 4 connects the first ground terminal 6, and cambered surface angular range is 180 °.
Housing shroud cover 1 connects the second ground terminal 5.
Housing shroud cover 1 is full-closed structure.
1 bottom surface of housing shroud cover is to 10 centimetres of the distance of 7 top surface of pedestal.
During experiment, double shield electrostatic isolation transformer accesses terminal and connects power supply, leading-out terminal connection by cable
Hookup winding coil 2 carries out insulation processing, while filtration fraction power supply clutter to primary side and the electrical of secondary side.Shell
Shielding case 1 is enclosed construction, 4 catching portion interference wave of connection arc grading shield and electrostatic, and passes through the first ground terminal 6 and the
Two ground terminals 5 are by electrostatic grounding.
Embodiment 3
Double shield electrostatic isolation transformer described in the present embodiment, including winding coil 2, supporting rack 3, pedestal 7 and shell
Shielding case 1,1 top of housing shroud cover connection arc grading shield 4.
Arc grading shield 4 connects the first ground terminal 6, and cambered surface angular range is 270 °.
Housing shroud cover 1 connects the second ground terminal 5.
Housing shroud cover 1 is full-closed structure.
1 bottom surface of housing shroud cover is to 13 centimetres of the distance of 7 top surface of pedestal.
During experiment, double shield electrostatic isolation transformer accesses terminal and connects power supply, leading-out terminal connection by cable
Hookup winding coil 2 carries out insulation processing, while filtration fraction power supply clutter to primary side and the electrical of secondary side.Shell
Shielding case 1 is enclosed construction, 4 catching portion interference wave of connection arc grading shield and electrostatic, and passes through the first ground terminal 6 and the
Two ground terminals 5 are by electrostatic grounding.
Claims (4)
1. double shield electrostatic isolation transformer, including housing shroud cover (1), winding coil (2), supporting rack (3) and pedestal (7),
It is characterized in that housing shroud cover (1) top connection arc grading shield (4).
2. double shield electrostatic isolation transformer according to claim 1, it is characterised in that arc grading shield (4) connection first
Ground terminal (6), cambered surface angular range are 45 ° to 270 °.
3. double shield electrostatic isolation transformer according to claim 1, it is characterised in that housing shroud cover (1) is totally-enclosed
Structure, and connect the second ground terminal (5).
4. double shield electrostatic isolation transformer according to claim 1, it is characterised in that pedestal (7) top surface to housing shroud
The distance for covering (1) bottom surface is not less than 10 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737905.2U CN207488325U (en) | 2017-12-09 | 2017-12-09 | Double shield electrostatic isolation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737905.2U CN207488325U (en) | 2017-12-09 | 2017-12-09 | Double shield electrostatic isolation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207488325U true CN207488325U (en) | 2018-06-12 |
Family
ID=62458636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721737905.2U Expired - Fee Related CN207488325U (en) | 2017-12-09 | 2017-12-09 | Double shield electrostatic isolation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207488325U (en) |
-
2017
- 2017-12-09 CN CN201721737905.2U patent/CN207488325U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20211209 |