CN110391082A - One kind is dry to get higher crimping ring mould - Google Patents
One kind is dry to get higher crimping ring mould Download PDFInfo
- Publication number
- CN110391082A CN110391082A CN201910745771.6A CN201910745771A CN110391082A CN 110391082 A CN110391082 A CN 110391082A CN 201910745771 A CN201910745771 A CN 201910745771A CN 110391082 A CN110391082 A CN 110391082A
- Authority
- CN
- China
- Prior art keywords
- turn
- inner ring
- centre circle
- ring
- outer ring
- 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.)
- Granted
Links
- 238000002788 crimping Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000001739 rebound effect Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/098—Mandrels; Formers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The present invention proposes that one kind is dry and gets higher crimping ring mould, which is characterized in that including inner ring, centre circle, outer ring, upper backup pad and lower supporting plate；Inner ring and centre circle include left half-turn and right half-turn, are connected between left half-turn and right half-turn by elastic telescopic part；It is trapped and is set to outside inner ring；Outer ring be arranged with outside centre circle；It is equipped with the reserved space of built-in type low-voltage circle between centre circle and inner ring, the reserved space of pre-buried high-tension coil is equipped between outer ring and centre；Inner ring, centre circle and the end up and down of outer ring are equipped with the link block with upper backup pad and lower supporting plate, and upper backup pad is covered on inner ring, centre circle and the upper surface of outer ring by link block；Lower supporting plate is covered on inner ring, centre circle and the lower end surface of outer ring by link block, with propose it is a kind of installed convenient for coil, and occur demoulding the dry of phenomenon due to the rebound effect of itself and get higher crimping ring mould after avoiding coil from installing.
Description
Technical field
The present invention relates to transformer technology field, more particularly to a kind of dry get higher crimping ring mould.
Background technique
Dry transformer coil structure is based on oval at present, it is general by coil winding machine combination cross section be it is oval around
Line mould carrys out coiling molding, but long circular coil there is a problem that in winding process it is very much, wherein being most difficult to is also without complete
Solve the problems, such as to be exactly to cause in winding process since the rebound effect of cable itself makes coil short generate the biggish power of extending out
Make coil short and winding former sur-face peeling and arch upward outward, keeps the coil dimension of final molding bigger than normal, seriously wanted beyond technology
Ask, to bring very big difficulty to subsequent Assembling Production process, serious person test it is unqualified and must not do over again, or even become
At waste product.
Therefore, to solve the above problems, needing to improve existing coiling mode structure, winding process coil is avoided
Short is detached from coiling mould surface and arches upward outward, and coil molding size is made to meet technical requirements, guarantees coil molding quality, with benefit
In subsequent assembly.
Summary of the invention
It is an object of the invention to propose it is a kind of installed convenient for coil, and due to the rebound of itself after avoiding coil from installing
There is demoulding the dry of phenomenon and gets higher crimping ring mould in effect.
In order to achieve the above objectives, the present invention proposes that one kind is dry and gets higher crimping ring mould, including inner ring, centre circle, outer ring, upper branch
Fagging and lower supporting plate；The inner ring and centre circle include left half-turn and right half-turn, are passed through between the left half-turn and right half-turn
Elastic telescopic part is connected；
It is described to be trapped outside the inner ring；The outer ring be arranged with outside the centre circle；The centre circle and the inner ring
Between be equipped with built-in type low-voltage circle reserved space, between the outer ring and the centre be equipped with the pre- of pre-buried high-tension coil leave a blank
Between；
The inner ring, centre circle and the end up and down of outer ring are equipped with the connection with the upper backup pad and the lower supporting plate
Block, the upper backup pad are covered on the inner ring, centre circle and the upper surface of outer ring by the link block；The lower supporting plate is logical
It crosses the link block and is covered on the inner ring, centre circle and the lower end surface of outer ring.
Preferably, the company that multiple groups are oppositely arranged is equipped on the inner sidewall of the joint face of the left half-turn and the right half-turn
Connect block, be equipped with connecting hole on the link block, by the elastic telescopic part be inserted in two pieces of opposite link blocks it
Between, realize being connected between the left half-turn and the right half-turn.
Preferably, the elastic telescopic part includes fastening bolt, nut and spring；The spring pocket is set to the bolt
On, the bolt realizes the connection between two pieces of link blocks being oppositely arranged by the nut, and the spring is located at two
Between link block described in block, i.e., between the described left half-turn and the right half-turn.
Preferably, the inner ring, centre circle and outer ring are insulator-metal board.
Preferably, the upper backup pad and the lower supporting plate are insulator-metal board, and iron core is embedded in the interior of the inner ring in advance
Side, and be set up between the upper backup pad and the lower supporting plate.
Preferably, the upper backup pad is equipped with high-voltage power transmission end and low voltage power transmission is disconnected.
Preferably, the upper backup pad and the lower supporting plate are equipped with bolt hole, the inner ring, centre circle and outer ring it is upper
Lower end surface is equipped with fixed block, and the fixed block is equipped with the location hole cooperated with the bolt hole
Compared with prior art, of the invention to be advantageous in that: the dry crimping ring mould inner ring that gets higher of the invention is in
Circle is attached by elastic telescopic part, and low-voltage line group is wound on inner ring, winds high-voltage line group on centre circle；Low-voltage line group and height
After the winding of crimping group, left half-turn and right half-turn expand outwardly a certain distance by elastic telescopic part, until left half-turn and it is right partly
Circle and low-voltage coil, high-tension coil contradict completely, so that inner ring and centre circle are that low-voltage coil and high-tension coil provide centainly
Tension avoids coil and mold that demoulding phenomenon occurs.
Detailed description of the invention
Fig. 1 is a kind of dry overall structure diagram for getting higher crimping ring mould in one embodiment of the invention.
Fig. 2, which is that one kind is dry in one embodiment of the invention, gets higher left half-turn and right half-turn and elastic telescopic part in crimping ring mould
Attachment structure schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be made below into
Illustrate to one step.
As depicted in figs. 1 and 2, the present invention propose it is a kind of it is dry get higher crimping ring mould, including inner ring 1, centre circle 2, outer ring 3,
Upper backup pad 4 and lower supporting plate 5；Inner ring 1 and centre circle 2 include left half-turn and right half-turn, are passed through between left half-turn and right half-turn
Elastic telescopic part 6 is connected；
Centre circle 2 is sheathed on outside inner ring 1；Outer ring 3 be arranged with outside centre circle 2；Built-in type low-voltage is equipped between centre circle 2 and inner ring 1
The reserved space of circle is equipped with the reserved space of pre-buried high-tension coil between outer ring 3 and centre；
Inner ring 1, centre circle 2 and the end up and down of outer ring 3 are equipped with the link block with upper backup pad 4 and lower supporting plate 5, upper branch
Fagging 4 is covered on the upper surface of inner ring 1, centre circle 2 and outer ring 3 by link block；Lower supporting plate 5 is covered on inner ring by link block
1, the lower end surface of centre circle 2 and outer ring 3.
In the present embodiment, it is of the invention it is dry get higher crimping ring mould inner ring 1 and centre circle 2 by elastic telescopic part 6 into
Row connects, and low-voltage line group is wound on inner ring 1, winds high-voltage line group on centre circle 2；After low-voltage line group and the winding of high-voltage line group, left half
Circle and right half-turn pass through elastic telescopic part 6 and expand outwardly a certain distance, until left half-turn and right half-turn and low-voltage coil, high pressure
Coil contradicts completely so that inner ring 1 and centre circle 2 are low-voltage coil and high-tension coil provides certain tension, avoid coil with
Demoulding phenomenon occurs for mold.
In the present embodiment, the connection that multiple groups are oppositely arranged is equipped on the inner sidewall of the joint face of left half-turn and right half-turn
Block is equipped with connecting hole on link block, is inserted between two pieces of opposite link blocks by elastic telescopic part 6, realizes left half-turn
Being connected between right half-turn.
In the present embodiment, elastic telescopic part 6 includes fastening bolt, nut and spring；Spring pocket is set on bolt, bolt
Realize the connection between two pieces of link blocks being oppositely arranged by nut, spring is located between two pieces of link blocks, i.e., left half-turn with
Between right half-turn, certain tension is provided for left half-turn and right half-turn.
In the present embodiment, inner ring 1, centre circle 2 and outer ring 3 are insulator-metal board.
In the present embodiment, upper backup pad 4 and lower supporting plate 5 are insulator-metal board, and iron core is embedded in the inside of inner ring 1 in advance,
And it is set up between upper backup pad 4 and lower supporting plate 5.
In the present embodiment, upper backup pad 4 is equipped with high-voltage power transmission end and low voltage power transmission is disconnected.
In the present embodiment, upper backup pad 4 and lower supporting plate 5 are equipped with bolt hole, inner ring 1, centre circle 2 and outer ring 3 it is upper
Lower end surface is equipped with fixed block, and fixed block is equipped with the location hole cooperated with bolt hole.
The above is only a preferred embodiment of the present invention, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical solution of the present invention, to the invention discloses technical solution and
Technology contents make the variation such as any type of equivalent replacement or modification, belong to the content without departing from technical solution of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (7)
1. one kind is dry to get higher crimping ring mould, which is characterized in that including inner ring, centre circle, outer ring, upper backup pad and lower supporting plate；
The inner ring and centre circle include left half-turn and right half-turn, are connected between the left half-turn and right half-turn by elastic telescopic part
It connects；
It is described to be trapped outside the inner ring；The outer ring be arranged with outside the centre circle；Between the centre circle and the inner ring
Reserved space equipped with built-in type low-voltage circle is equipped with the reserved space of pre-buried high-tension coil between the outer ring and the centre；
The inner ring, centre circle and the end up and down of outer ring are equipped with the link block with the upper backup pad and the lower supporting plate,
The upper backup pad is covered on the inner ring, centre circle and the upper surface of outer ring by the link block；The lower supporting plate passes through
The link block is covered on the inner ring, centre circle and the lower end surface of outer ring.
2. dry crimping ring mould is got higher according to claim 1, which is characterized in that the left half-turn and the right half-turn
It is equipped with the link block that multiple groups are oppositely arranged on the inner sidewall of joint face, connecting hole is equipped on the link block, by described
Elastic telescopic part is inserted between two pieces of opposite link blocks, realizes the rank between the left half-turn and the right half-turn
It connects.
3. dry crimping ring mould is got higher according to claim 2, which is characterized in that the elastic telescopic part includes fastening spiral shell
Bolt, nut and spring；The spring pocket is set on the bolt, and the bolt realizes two pieces be oppositely arranged by the nut
Connection between the link block, the spring are located between two pieces of link blocks, i.e., the described left half-turn and the right half-turn
Between.
4. dry crimping ring mould is got higher according to claim 1, which is characterized in that the inner ring, centre circle and outer ring are
Insulator-metal board.
5. dry crimping ring mould is got higher according to claim 1, which is characterized in that the upper backup pad and the lower support
Plate is insulator-metal board, and iron core is embedded in the inside of the inner ring in advance, and is set up in the upper backup pad and the lower supporting plate
Between.
6. dry crimping ring mould is got higher according to claim 1, which is characterized in that the upper backup pad is equipped with high-voltage electricity
Transmission end and low voltage power transmission are disconnected.
7. dry crimping ring mould is got higher according to claim 1, which is characterized in that the upper backup pad and the lower support
Plate is equipped with bolt hole, and the inner ring, centre circle and the upper and lower end face of outer ring are equipped with fixed block, and the fixed block is equipped with and institute
State the location hole of bolt hole cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910745771.6A CN110391082B (en) | 2019-08-13 | 2019-08-13 | Dry-change high-voltage coil die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910745771.6A CN110391082B (en) | 2019-08-13 | 2019-08-13 | Dry-change high-voltage coil die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110391082A true CN110391082A (en) | 2019-10-29 |
| CN110391082B CN110391082B (en) | 2024-03-29 |
Family
ID=68288717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910745771.6A Active CN110391082B (en) | 2019-08-13 | 2019-08-13 | Dry-change high-voltage coil die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110391082B (en) |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0831679A (en) * | 1994-07-14 | 1996-02-02 | Mitsubishi Electric Corp | Coil former |
| KR19990039853U (en) * | 1998-04-21 | 1999-11-15 | 권호택 | Assembly structure of the flyback transformer |
| JP2009261086A (en) * | 2008-04-15 | 2009-11-05 | Sumitomo Electric Ind Ltd | Stator and method for manufacturing stator |
| CN201527901U (en) * | 2009-11-13 | 2010-07-14 | 重庆源通干式变压器有限公司 | Pouring mould of transformer |
| KR20100112772A (en) * | 2009-04-10 | 2010-10-20 | 제룡산업 주식회사 | Fully insulated mold transformer and manufacturing method thereof |
| CN201616348U (en) * | 2010-02-09 | 2010-10-27 | 山东金曼达电工股份有限公司 | Friction type electromagnetic wire tension device |
| CN202084398U (en) * | 2011-05-23 | 2011-12-21 | 中变集团上海变压器有限公司 | Dry type transformer with integrated coil structure |
| CN202134402U (en) * | 2011-04-12 | 2012-02-01 | 宁波奥克斯高科技有限公司 | Supporting die for transformer coil |
| KR20120051889A (en) * | 2010-11-15 | 2012-05-23 | 제룡전기 주식회사 | Compact transformer with heat exhaust means and manufacturing method thereof |
| CN202258781U (en) * | 2011-09-24 | 2012-05-30 | 许继集团有限公司 | Casting die of transformer |
| CN102800466A (en) * | 2011-05-23 | 2012-11-28 | 中变集团上海变压器有限公司 | Dry-type transformer with integrated coil structure |
| CN203950678U (en) * | 2014-07-14 | 2014-11-19 | 青岛海电电气有限公司 | Transformer coil adjustable coiling die |
| CN104517722A (en) * | 2014-12-31 | 2015-04-15 | 浙江江山特种变压器有限公司 | Automatic laser tracking transformer winding device |
| CN205959764U (en) * | 2016-08-19 | 2017-02-15 | 苏州安泰变压器有限公司 | Transformer coil casting mold with adjustable |
| KR101706665B1 (en) * | 2016-12-16 | 2017-02-20 | 제룡전기 주식회사 | Manufacturing method of earthquake resistant type cast resin transfomer |
| KR101712571B1 (en) * | 2016-08-26 | 2017-03-08 | 주식회사 케이피 일렉트릭 | Vibration-proof type mold transformer |
| CN208298693U (en) * | 2018-04-25 | 2018-12-28 | 康利源科技（天津）股份有限公司 | A kind of transformer fagging structure of electrical laminated wood processing |
| CN109326431A (en) * | 2018-11-05 | 2019-02-12 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer and its assembly method |
| CN109903988A (en) * | 2019-04-28 | 2019-06-18 | 河南合瑞电气有限公司 | A kind of automatic winding apparatus of reactor winding |
| CN209029220U (en) * | 2018-11-05 | 2019-06-25 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer |
| CN210156254U (en) * | 2019-08-13 | 2020-03-17 | 中变集团上海变压器有限公司 | Dry-type high-voltage coil die |
-
2019
- 2019-08-13 CN CN201910745771.6A patent/CN110391082B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0831679A (en) * | 1994-07-14 | 1996-02-02 | Mitsubishi Electric Corp | Coil former |
| KR19990039853U (en) * | 1998-04-21 | 1999-11-15 | 권호택 | Assembly structure of the flyback transformer |
| JP2009261086A (en) * | 2008-04-15 | 2009-11-05 | Sumitomo Electric Ind Ltd | Stator and method for manufacturing stator |
| KR20100112772A (en) * | 2009-04-10 | 2010-10-20 | 제룡산업 주식회사 | Fully insulated mold transformer and manufacturing method thereof |
| CN201527901U (en) * | 2009-11-13 | 2010-07-14 | 重庆源通干式变压器有限公司 | Pouring mould of transformer |
| CN201616348U (en) * | 2010-02-09 | 2010-10-27 | 山东金曼达电工股份有限公司 | Friction type electromagnetic wire tension device |
| KR20120051889A (en) * | 2010-11-15 | 2012-05-23 | 제룡전기 주식회사 | Compact transformer with heat exhaust means and manufacturing method thereof |
| CN202134402U (en) * | 2011-04-12 | 2012-02-01 | 宁波奥克斯高科技有限公司 | Supporting die for transformer coil |
| CN102800466A (en) * | 2011-05-23 | 2012-11-28 | 中变集团上海变压器有限公司 | Dry-type transformer with integrated coil structure |
| CN202084398U (en) * | 2011-05-23 | 2011-12-21 | 中变集团上海变压器有限公司 | Dry type transformer with integrated coil structure |
| CN202258781U (en) * | 2011-09-24 | 2012-05-30 | 许继集团有限公司 | Casting die of transformer |
| CN203950678U (en) * | 2014-07-14 | 2014-11-19 | 青岛海电电气有限公司 | Transformer coil adjustable coiling die |
| CN104517722A (en) * | 2014-12-31 | 2015-04-15 | 浙江江山特种变压器有限公司 | Automatic laser tracking transformer winding device |
| CN205959764U (en) * | 2016-08-19 | 2017-02-15 | 苏州安泰变压器有限公司 | Transformer coil casting mold with adjustable |
| KR101712571B1 (en) * | 2016-08-26 | 2017-03-08 | 주식회사 케이피 일렉트릭 | Vibration-proof type mold transformer |
| KR101706665B1 (en) * | 2016-12-16 | 2017-02-20 | 제룡전기 주식회사 | Manufacturing method of earthquake resistant type cast resin transfomer |
| CN208298693U (en) * | 2018-04-25 | 2018-12-28 | 康利源科技（天津）股份有限公司 | A kind of transformer fagging structure of electrical laminated wood processing |
| CN109326431A (en) * | 2018-11-05 | 2019-02-12 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer and its assembly method |
| CN209029220U (en) * | 2018-11-05 | 2019-06-25 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer |
| CN109903988A (en) * | 2019-04-28 | 2019-06-18 | 河南合瑞电气有限公司 | A kind of automatic winding apparatus of reactor winding |
| CN210156254U (en) * | 2019-08-13 | 2020-03-17 | 中变集团上海变压器有限公司 | Dry-type high-voltage coil die |
Non-Patent Citations (1)
| Title |
|---|
| 王桂英; 荆维柱: "变压器铁芯片自动叠装硬质合金级进模设计", 《模具制造》, pages 75 - 81 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110391082B (en) | 2024-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201430032Y (en) | Pipe-internal parachute skirt-type hollow composite insulator | |
| CN110391082A (en) | One kind is dry to get higher crimping ring mould | |
| CN102852370A (en) | Composite material combined type cross arm for high-tension transmission line tower pole | |
| KR101174358B1 (en) | Overhead line fixing insulator | |
| CN210156254U (en) | Dry-type high-voltage coil die | |
| CN205822893U (en) | A kind of special-shaped cross-arm and power transmission rod | |
| CN204155724U (en) | A kind of open dry-type transformer | |
| CN2624359Y (en) | Combined hollow insulator | |
| CN211182083U (en) | Pole-mounted circuit breaker for electric box for electric energy transmission | |
| CN209955770U (en) | Electric locomotive pantograph insulation dress | |
| CN208596595U (en) | A kind of dry-type transformer being easily installed | |
| CN215451145U (en) | Transformer with built-in high-voltage coil | |
| CN202957086U (en) | High-voltage outlet composite bushing | |
| CN206712398U (en) | A kind of gas-filling cabinet and its bus casing component | |
| CN205900193U (en) | Special degasification dish of high tension cable | |
| CN208111852U (en) | Coaxial radio-frequency connector | |
| CN101968992A (en) | Railway traction transformer | |
| CN201270190Y (en) | Transformer frame convenient for mounting | |
| CN201788807U (en) | Transformer | |
| CN202352479U (en) | Insulation protection device for transformer ascending flanged base operating hole | |
| CN216311562U (en) | Line outgoing device of corrugated supporting structure | |
| CN220964063U (en) | Contact box | |
| CN209843480U (en) | Outdoor dry-type current transformer of electric capacity type high pressure | |
| CN204696344U (en) | A kind of integral type power supply wire bushing and apply the supply socket of this power supply wire bushing | |
| CN210167246U (en) | Epoxy pouring dry type 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 |