CN107946026B - External current transformer for transformer - Google Patents
External current transformer for transformer Download PDFInfo
- Publication number
- CN107946026B CN107946026B CN201711161545.0A CN201711161545A CN107946026B CN 107946026 B CN107946026 B CN 107946026B CN 201711161545 A CN201711161545 A CN 201711161545A CN 107946026 B CN107946026 B CN 107946026B
- Authority
- CN
- China
- Prior art keywords
- primary conductor
- transformer
- box body
- current transformer
- box
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F27/2852—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to an external current transformer for a transformer, and belongs to the technical field of transformer manufacturing. The technical scheme is as follows: the damp-proof current transformer (5) is arranged in the box body (4), a lifting bar (3) is welded on the outer side of the box body (4), the lifting bar (3) is connected with a tripod welded on a transformer shell, a primary conductor is arranged at the center of the damp-proof current transformer (5), two ends of the primary conductor extend out of the box body (4), a heat-shrinkable tube (2) is arranged outside the primary conductor (1), the primary conductor (1) is fixed with the fixing plate (7) through an insulating screw (8), and the fixing plate (7) is fixed with the inner wall of the box body (4). The invention has the following positive effects: the current transformer is arranged externally, so that the test and the maintenance are convenient; the box body is welded with a lifting bar, so that the box body is convenient to lift; an independent secondary outlet box is arranged, so that equipment can be conveniently connected; a heat shrinkable tube is arranged outside the primary conductor, so that the insulating structure is simple; the primary conductor is firmly fixed with the box body, is convenient to disassemble and assemble and is convenient to transport.
Description
Technical Field
The invention relates to an external current transformer for a transformer, and belongs to the technical field of transformer manufacturing.
Background
At present, a bushing type current transformer for a transformer is assembled in a transformer lifting seat and is immersed in oil, the current transformer is inconvenient to wire and test when the transformer is tested and checked and daily inspection is carried out, and if the current transformer in the lifting seat has problems, the maintenance and the replacement are also difficult; before the transformer lifting seat is assembled to the transformer, the current transformer is transported with oil, so that inconvenience is brought to production.
Disclosure of Invention
The invention aims to provide an external current transformer for a transformer, which is internally provided with a moisture-proof current transformer, a detachable primary conductor and an external current transformer, is convenient to test and maintain and solves the problems in the prior art.
The technical scheme of the invention is as follows:
the utility model provides an external current transformer for transformer, contains primary conductor, pyrocondensation pipe, lifting bar, box (4), dampproofing current transformer, fixed plate and insulating screw rod, dampproofing current transformer sets up in the box, and the welding of the box outside has the lifting bar, and the lifting bar couples with the tripod that welds on transformer case, and primary conductor sets up at dampproofing current transformer central point, is equipped with the pyrocondensation pipe outside the primary conductor, and both ends are stretched out outside the box, and primary conductor passes through insulating screw rod and fixed mutually with the fixed plate, and the fixed plate is fixed mutually with the box inner wall, and primary conductor can dismantle.
The primary conductor is a copper bus or an aluminum bus.
The primary conductor is detachable.
The fixed plate is made of insulating materials.
And a secondary outlet box is arranged on the box body.
The box body is welded with a lifting bar which is convenient for lifting and is connected with a tripod welded on the transformer shell. The primary conductor is a copper bus (or an aluminum bus), passes through the center of the current transformer and is detachable. A heat-shrinkable tube is arranged outside the primary conductor and extends out of the box body for a certain distance, so that the primary conductor and the box body are prevented from being in insulation breakdown. The primary conductor is fixed with the fixing plate through the insulating screw rod, the fixing plate is fixed with the inner wall of the box body, and the fixing plate is an insulating piece and prevents the primary conductor from being punctured by the box body.
The invention has the following positive effects: the current transformer is arranged externally, so that the test and the maintenance are convenient; the box body is welded with a lifting bar, so that the box body is convenient to lift; an independent secondary outlet box is arranged, so that equipment can be conveniently connected; a heat shrinkable tube is arranged outside the primary conductor, so that the insulating structure is simple; the primary conductor is firmly fixed with the box body, is convenient to disassemble and assemble and is convenient to transport.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
in the figure: the device comprises a primary conductor 1, a heat shrinkable tube 2, a lifting bar 3, a box body 4, a damp-proof current transformer 5, a secondary outlet box 6, a fixing plate 7 and an insulating screw 8.
Detailed Description
The invention is further described with reference to the following figures and examples:
the utility model provides an external current transformer for transformer, contains primary conductor 1, pyrocondensation pipe 2, lifting tab 3, box 4, dampproofing current transformer 5, fixed plate 7 and insulating screw rod 8, dampproofing current transformer 5 sets up in box 4, and the welding of box 4 outside has lifting tab 3, and lifting tab 3 couples with the tripod of welding on the transformer housing, and primary conductor sets up at dampproofing current transformer 5 central point, and both ends stretch out outside box 4, and primary conductor 1 is equipped with pyrocondensation pipe 2 outward, and primary conductor 1 is fixed mutually with fixed plate 7 through insulating screw rod 8, and fixed plate 7 is fixed mutually with box 4 inner wall.
The primary conductor 1 is a copper bus or an aluminum bus.
The primary conductor 1 is detachable.
The fixing plate 7 is made of an insulating material.
And a secondary outlet box 6 is arranged on the box body 4.
The box body is welded with a lifting bar for facilitating lifting, and is connected with a tripod welded on the transformer shell, the primary conductor is a copper bus and penetrates through the center of the current transformer, and the secondary outlet wire is led out from the secondary outlet box independently. The heat shrinkable tube is arranged outside the primary conductor, so that the insulating structure is simple. The primary conductor is fixed with the fixing plate through the insulating screw rod, the fixing plate is fixed with the inner wall of the box body, and the fixing plate is an insulating piece and prevents the primary conductor from creeping with the box body. The moisture-proof current transformer 5 avoids the trouble of transferring with oil. The box is the CT box, wholly external, and convenient experiment, maintenance. The primary conductor is firmly fixed with the box body, is convenient to disassemble and assemble and is convenient to transport.
Claims (1)
1. The utility model provides an external current transformer for transformer which characterized in that: contain primary conductor (1), pyrocondensation pipe (2), lifting bar (3), box (4), dampproofing current transformer (5), fixed plate (7) and insulating screw rod (8), dampproofing current transformer (5) set up in box (4), and box (4) outside welding has lifting bar (3), lifting bar (3) and the tripod hookup of welding on transformer housing, and the primary conductor sets up at dampproofing current transformer (5) central point, and primary conductor (1) is equipped with pyrocondensation pipe (2) outward, and outside box (4) was stretched out at both ends, primary conductor (1) was fixed mutually with fixed plate (7) through insulating screw rod (8), and fixed plate (7) are fixed mutually with box (4) inner wall, and primary conductor (1) can be dismantled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711161545.0A CN107946026B (en) | 2017-11-21 | 2017-11-21 | External current transformer for transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711161545.0A CN107946026B (en) | 2017-11-21 | 2017-11-21 | External current transformer for transformer |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107946026A CN107946026A (en) | 2018-04-20 |
CN107946026B true CN107946026B (en) | 2020-08-21 |
Family
ID=61929399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711161545.0A Active CN107946026B (en) | 2017-11-21 | 2017-11-21 | External current transformer for transformer |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107946026B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109360712B (en) * | 2018-11-27 | 2023-10-17 | 保定天威互感器有限公司 | External current transformer for transformer and application method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102436871A (en) * | 2011-12-29 | 2012-05-02 | 无锡应达工业有限公司 | Connecting wire used for intermediate frequency power supply current transformer and equipment |
CN203617119U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | External current transformer for neutral point of transformer |
CN205194463U (en) * | 2015-12-09 | 2016-04-27 | 天津市百利纽泰克电气科技有限公司 | High -tension electricity minor current transformer high -pressure side screening can |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1090425A (en) * | 1993-01-30 | 1994-08-03 | 章成铭 | Thermosetting plastic shell formula electric current (voltage) instrument transformer |
JP4507988B2 (en) * | 2005-06-07 | 2010-07-21 | 株式会社明電舎 | Current transformer |
CN202905447U (en) * | 2012-09-22 | 2013-04-24 | 天津市泰莱电力设备技术有限公司 | Modified outdoor current transformer |
CN203365517U (en) * | 2013-07-11 | 2013-12-25 | 武汉和沐电气有限公司 | Electronic current transformer |
CN203607239U (en) * | 2013-12-06 | 2014-05-21 | 大连金业电力设备有限公司 | Current transformer special for outdoor 10 kv column switch |
CN205751839U (en) * | 2016-05-18 | 2016-11-30 | 广西西变变电设备有限公司 | Mutual inductor for outdoor high-voltage vacuum circuit breaker |
-
2017
- 2017-11-21 CN CN201711161545.0A patent/CN107946026B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102436871A (en) * | 2011-12-29 | 2012-05-02 | 无锡应达工业有限公司 | Connecting wire used for intermediate frequency power supply current transformer and equipment |
CN203617119U (en) * | 2013-12-26 | 2014-05-28 | 保定天威互感器有限公司 | External current transformer for neutral point of transformer |
CN205194463U (en) * | 2015-12-09 | 2016-04-27 | 天津市百利纽泰克电气科技有限公司 | High -tension electricity minor current transformer high -pressure side screening can |
Also Published As
Publication number | Publication date |
---|---|
CN107946026A (en) | 2018-04-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017186748A3 (en) | Replacement transformer having a modular structure | |
CN104036979A (en) | Fixed contact assembly of valve hall and tubular bus and fixed contact connection fitting thereof | |
CN107946026B (en) | External current transformer for transformer | |
CN104465025A (en) | Improved structure of oil-immersed transformer with current transformer | |
CN204243671U (en) | A kind of ultrahigh voltage direct current wall bushing central guiding fulgurite assembly | |
CN203839222U (en) | Static contact assembling for valve hall, and connecting metal fitting for connecting tubular busbar with static contact | |
CN201237973Y (en) | Sulfur hexafluoride current mutual inductor with small-diameter casing tube | |
CN207442418U (en) | A kind of end seal structure of ultrahigh voltage direct current wall bushing | |
CN202217575U (en) | Clamp structure of ultra-high voltage lead | |
CN208873577U (en) | A kind of 118kV energy supply transformer | |
CN204241601U (en) | A kind of test fuel tank for high-voltage alternating bushing shell for transformer full working scope certification test | |
CN208368338U (en) | A kind of bushing shell for transformer of high shielding properties | |
CN204441841U (en) | A kind of GIL structure | |
CN203617119U (en) | External current transformer for neutral point of transformer | |
CN203799829U (en) | Cooling type transformer lead device | |
CN204857414U (en) | Oil formula transformer | |
CN202018878U (en) | An installing structure of a transformer high pressure side current transformer coil | |
CN205621871U (en) | Gaseous cabinet conductive cone device of full insulation tubular busbar of prefabricated formula high pressure | |
CN202677685U (en) | Transformer floating potential discharge test model | |
CN203799850U (en) | 35KV large-creep-distance outdoor composite insulation voltage transformer | |
CN210956349U (en) | External current transformer for transformer | |
CN218333424U (en) | 110kV functional transformer | |
CN214254027U (en) | Pure porcelain bushing convenient to disassemble and assemble for transformer | |
CN203184897U (en) | Interior supporting welding device for connecting mouth of shielding case | |
CN204375554U (en) | A kind of current transformer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |