EP2239745B1 - Transformateur de performance doté d'un noyau amorphe - Google Patents
Transformateur de performance doté d'un noyau amorphe Download PDFInfo
- Publication number
- EP2239745B1 EP2239745B1 EP09005285.3A EP09005285A EP2239745B1 EP 2239745 B1 EP2239745 B1 EP 2239745B1 EP 09005285 A EP09005285 A EP 09005285A EP 2239745 B1 EP2239745 B1 EP 2239745B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- winding
- transformer
- winding body
- holding apparatus
- 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
- 238000004804 winding Methods 0.000 claims description 72
- 239000000463 material Substances 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000010292 electrical insulation Methods 0.000 claims description 4
- 239000003302 ferromagnetic material Substances 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000011162 core material Substances 0.000 description 55
- 239000011152 fibreglass Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 10
- 239000004020 conductor Substances 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 239000012811 non-conductive material Substances 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- H01F27/06—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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
- H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
Definitions
- the invention relates to a power transformer in dry construction and a method for producing a transformer in dry construction.
- Transformers are used for power transmission in power supply by voltage adjustment from a first voltage level to a second one.
- power transformers in dry construction so-called dry-type transformers, are increasingly being used.
- the structure of a power transformer in dry construction is very similar to that of the power transformer with oil filling, as well as power transformer in dry construction, the respective winding body are applied to cores made of ferromagnetic material, which are connected at both ends with yokes and form a magnetic circuit.
- Ohmic losses occur in the windings of a loaded transformer due to the winding currents and eddy currents in the conductor material. These ohmic losses are superimposed by no-load losses and possibly short-circuit losses and hysteresis losses.
- the no-load losses are mainly determined by the induction and nature of the core and are approximately independent of the operating temperature of the transformer.
- the short-circuit losses are temperature-dependent and increase at constant load with the temperature or the resistivity of the conductor material.
- core materials with a very narrow hysteresis loop are used.
- amorphous core material is used in place of grain-oriented core material in recent times.
- amorphous materials require new constructions and processing because the amorphous material is largely pressure-sensitive so that core losses can be enhanced.
- the invention provides that the core is kept suspended from amorphous material of the holding device, wherein the holding device for fixing the at least one primary winding and secondary winding is used and for this purpose acts on the at least one winding body respectively at its end faces.
- the amorphous core is made in each case as a winding tape core of strip material made of amorphous material.
- the metal coils prepared for use as cores are held in shape by means of tear-resistant tape, in that the tear-resistant tape is repeatedly looped around the sheet stack at a distance from one another so that the sheet metal coils are held together.
- the winding cores thus formed preferably have a rectangular plan, that is, they each occupy a rectangular area.
- embodiments with an oval or circular floor plan are also within the scope of the invention.
- the transformer according to the invention is designed as a three-phase transformer and has three juxtaposed cores, each of which is comprised of a winding or bobbin.
- At least two winding cores are arranged side by side with their longitudinal legs and their mechanical connection by means of band material made of amorphous material in the winding plane are wrapped, all legs have the same winding cross-section, that is, the same thickness and width.
- At least two, but preferably four, of the previously described winding cores are placed with their longitudinal limbs against one another.
- This arrangement thus formed is then wrapped by means of band material of amorphous material, so that result as a result of this wrapping a total of five legs with the same winding cross-section.
- the holding device is formed from at least two clamping elements, which are in operative connection with each other and are arranged on each end face of a winding body. It is provided that the support structure is designed so that mechanical stresses that arise during the fixation of the winding body, are initiated only in the support structure and in the winding body, so that the covered by the winding bodies cores in the support structure, although guided but not braced , so exposed to mechanical stresses are.
- each core is cylindrical in shape of amorphous material in layer construction with at least two legs and a one-piece molded yoke.
- the clamping elements of the support structure may consist of ferromagnetic material and at the same time serve as a yoke.
- each core is magnetically connected to the clamping elements of the holding device.
- each core end is in each case encompassed on two opposite sides of the clamping elements without pressure, wherein to avoid a compressive load of the core due to a clamping of the core and the resulting mechanical stress, the clamping elements by means firmly connected to the clamping elements spacer exactly Distance to the respective core are kept.
- the respective core is in this case introduced at the intended location with one end in the space between the clamping elements and held by a likewise firmly connected to the clamping elements support plate, so that, for example, in a three-phase transformer designed as a transformer according to the invention three cores columnar next to each other at the lower yoke serving lower holding device, wherein they optionally engage in the space defined by the two clamping elements gap while avoiding mechanical stresses.
- the retaining construction consists of non-ferromagnetic material, in particular of fiber-reinforced plastics.
- the holding structure is not part of the magnetic field circuit in this case, the entire arrangement has a significantly reduced weight compared to a full-metal design.
- each core is provided at its end faces with a pad of insulating material.
- This edition serves both as electrical insulation and on the other hand as a means of shock absorption for the relevant core.
- this edition of an insulating material such as plastic, in particular glass fiber reinforced plastic or silicone rubber.
- carriers are provided at the front ends of each yoke, which interconnect the yokes, that is, the lower yoke with the upper yoke. These carriers are preferably guided along the outer longitudinal sides of the core or cores and encompassed by the relevant respective winding body, that is, the carriers are guided in the interior of the winding body parallel to the respective core and connected to the opposite yoke.
- tie rods can be provided which press the yokes formed from the clamping elements against the winding body, wherein the cores are each unimpaired.
- the invention provides, instead of a hitherto conventional core press construction, in which the attachment of the coil or winding body is effected by pressing against the core, to use a coil press construction.
- the winding body are held by a support structure independent of the core.
- the core is only placed or suspended on designated plates of the support structure.
- this novel transformer namely a transformer having a core composed of layered strips of amorphous material , which is sensitive to mechanical stresses, with at least one surrounding the core, at least one primary winding and a secondary winding formed winding body and specify at least one holding device.
- inventive method for producing such a transformer is defined by the features of claim 10.
- the short legs of the winding rings each form the magnetic yokes.
- the short legs of the winding rings instead of the rectangular shape for the cross section of the individual winding rings and oval or circular cross-sections can be used.
- the transformer core is formed from a total of four coils with juxtaposed longitudinal limbs, which are mechanically connected to one another, so that in this way a 5-limb core is produced.
- the mechanical connection as previously indicated for the dreischkeligen core, preferably effected by the single cores are wrapped in its winding plane with tape material and so the composite of the individual cores is made into a 5-leg core.
- Fig. 1 is a side view of a transformer 10 according to the invention with complete external electrical interconnection shown, which has as a three-phase transformer each core 11 in three winding bodies 12, the upper electrical terminals 14, 16, 18 in the example shown with U, V, W and by means of connecting conductors 20 are conductively connected to each other.
- the three winding bodies 12 are arranged in close proximity to each other in line and held between a lower yoke 22 and an upper yoke 24.
- Each yoke 22, 24 is composed of two clamping elements 25 each formed as a C-profile, that is, of a web portion 26 with on its longitudinal sides to the same side facing right-angled flanges 28.
- the clamping elements 24 are arranged parallel to each other, such that the flanges 28 are directed outwards while their flangeless backs face each other.
- the flanges have a different width and in such a way that the flanges 28 located on the side of the winding body 12 are narrower than those on the side facing away from the winding bodies 12, which are about twice as wide.
- this design proves to be advantageous because with the wider flanges 28 a correspondingly larger footprint and thus a higher stability is ensured.
- Each of the winding bodies 12 facing flanges 28 of the clamping elements 25 are used to attach the winding body 12 and thus to force during clamping of the yokes 22, 24.
- trusses 30 are attached to the outer ends rollers 32nd are fixed, on which the entire transformer 10 is movable, as well as from the view in Fig. 2 can be seen.
- cross member 34 which consist of electrically non-conductive material and preferably as glass fiber reinforced plates 36 and strips 38 are used. These cross members 34 are connected on the one hand with the upper flange 28 of the lower yoke 20 and on the other hand with the respectively set thereon winding bodies 12th
- this fastening manner is repeated at the top of the transformer 10.
- formed cross member 34 is arranged accordingly, which for the rigid connection of the winding body 12 are provided with the lower flange 28 of the upper yoke 22.
- FIG. 2 which is a cross section through the transformer 10 according to FIG Fig. 1 is reproduced along the section line AA drawn there, the transformer 10 according to the invention is shown with a view of a winding body 12 from the side.
- this view differs from the one in Fig. 1 shown by the view held in the lower yoke 22 and upper yoke or suspended core 11 made of amorphous material.
- each tie rod 42 are provided, which the clamping elements 25 of the lower yoke 22 and the upper yoke 24 and penetrate the core 11 and so ensure a positive retention of the core 11.
- an insulator is mounted, which serves to hold the connecting line 20.
- connecting conductors are also shown, which are connected to at least one of the winding body 12.
- Fig. 3 is a side view of a support member formed by a cross member 34 for fixing a winding body 12 is shown, depending on whether it is located outside or inside according to Fig. 1 , narrow as strip 38 or wide as plate 36 is made of glass fiber reinforced plastic.
- a cross member 34 which is provided outside to support a winding body 12. Its structure is as follows. At each end of the cross member 34 forming bar 38, a threaded rod 46 is inserted, which passes through the bar 38 and a plate located underneath plate 48 and is anchored in a further perpendicular to the bar 38 arranged bar 54 made of fiberglass reinforced plastic.
- FIG. 4 a side view of a support for a core 11 of amorphous material.
- This Auflagerung consists of an upper plate 56 made of silicone, which is supported by the support plate 42 made of glass fiber reinforced plastic.
- the support plate 42 made of glass fiber reinforced plastic is in turn penetrated by tie rods 42, which cooperate with the clamping elements 25, not shown here, of the upper yoke 22 and are supported thereon.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Of Transformers For General Uses (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Insulating Of Coils (AREA)
Claims (11)
- Transformateur (10) de type sec avec un noyau formé de matériau en bande amorphe sous forme de noyau en bande enroulée, qui est sensible à des sollicitations mécaniques, avec au moins un corps d'enroulement (12) entourant le noyau et formé d'au moins respectivement un enroulement primaire et un enroulement secondaire, ainsi qu'avec au moins un dispositif de maintien, caractérisé en ce que le dispositif de maintien sert pour la fixation desdits au moins respectivement un enroulement primaire et un enroulement secondaire et est formé d'au moins deux éléments de serrage (25), qui sont en liaison active l'un avec l'autre et sollicitent ledit au moins un corps d'enroulement sur chacun de ses côtés frontaux et en ce que le noyau en matériau amorphe est maintenu en suspension par le dispositif de maintien, dans lequel ledit au moins un corps d'enroulement est maintenu indépendamment du noyau.
- Transformateur selon la revendication 1, caractérisé en ce que le transformateur est un transformateur à courant triphasé et comprend trois corps d'enroulement avec noyau.
- Transformateur selon l'une quelconque des revendications précédentes, caractérisé en ce que le noyau est réalisé en forme d'anneau avec un tracé rectangulaire ou ovale ou rond.
- Transformateur selon la revendication 3, caractérisé en ce qu'au moins deux de ces noyaux en bande enroulée sont disposés avec leurs branches longitudinales l'une à côté de l'autre et sont enveloppés dans le plan d'enroulement, en vue de leur liaison mécanique, au moyen d'un matériau en bande en matériau amorphe, dans lequel toutes les branches présentent la même section transversale d'enroulement.
- Transformateur selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de serrage sont constitués de matériau ferromagnétique et servent en même temps d'armature, dans lequel chaque noyau est relié de façon magnétiquement conductrice aux éléments de serrage du dispositif de maintien.
- Transformateur selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque noyau est muni sur ses côtés frontaux d'un appui en matériau isolant.
- Transformateur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu aux extrémités frontales de chaque armature des supports, qui relient les armatures l'une à l'autre.
- Transformateur selon la revendication 7, caractérisé en ce que les supports sont guidés le long des côtés longitudinaux situés à l'extérieur du noyau ou des noyaux et sont entourés par le corps d'enroulement concerné.
- Procédé de fabrication d'un transformateur (10), de type sec, avec un noyau en bande enroulée en matériau amorphe, qui est sensible à des sollicitations mécaniques, avec au moins un corps d'enroulement (12) entourant le noyau et formé d'au moins respectivement un enroulement primaire et un enroulement secondaire, et avec au moins un dispositif de maintien pour la fixation du corps d'enroulement formé, dans lequel le dispositif de maintien est formé d'au moins deux éléments de serrage (25), qui sont en liaison active l'un avec l'autre et sollicitent ledit au moins un corps d'enroulement sur chacun de ses côtés frontaux, le noyau en matériau amorphe étant maintenu en suspension par le dispositif de maintien et ledit au moins un corps d'enroulement étant maintenu indépendamment du noyau, comprenant les étapes suivantes:a) on prépare un matériau en bande en matériau amorphe;b) on fabrique par enroulement, à partir du matériau en bande amorphe, deux noyaux individuels en forme d'anneau présentant respectivement la même section transversale, de préférence rectangulaire;c) on juxtapose les deux noyaux individuels avec leurs branches longitudinales l'une contre l'autre et on les enveloppe dans le plan d'enroulement des noyaux individuels avec un matériau en bande, de telle manière que le noyau présente trois branches longitudinales de même section transversale;d) on serre ledit au moins un corps d'enroulement avec le dispositif de maintien;e) on équipe les branches extérieures du noyau de transformateur ainsi fabriqué respectivement avec l'enroulement électrique primaire ou avec l'enroulement électrique secondaire;f) on effectue ensuite le câblage des enroulements électriques.
- Procédé selon la revendication 9, dans lequel on dispose, au moins sur le côté frontal inférieur de chaque noyau, un tapis de caoutchouc silicone dans un but d'amortissement des chocs et d'isolation électrique.
- Procédé selon la revendication 9, dans lequel on dispose sur les deux côtés frontaux de chaque noyau des tapis en caoutchouc silicone dans un but d'amortissement des chocs et d'isolation électrique.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09005285T ES2404823T3 (es) | 2009-04-11 | 2009-04-11 | Transformador de potencia con núcleo amorfo |
EP09005285.3A EP2239745B1 (fr) | 2009-04-11 | 2009-04-11 | Transformateur de performance doté d'un noyau amorphe |
CA2758282A CA2758282C (fr) | 2009-04-11 | 2010-03-23 | Transformateur de puissance avec noyau amorphe |
KR1020117023776A KR101695345B1 (ko) | 2009-04-11 | 2010-03-23 | 비결정질 코어를 가지는 전력 변압기 |
BRPI1010257-4A BRPI1010257B1 (pt) | 2009-04-11 | 2010-03-23 | Transformador do tipo seco e método para produção de um transformador do tipo seco |
CN201080017086.9A CN102388424B (zh) | 2009-04-11 | 2010-03-23 | 带有非晶的芯部的功率变压器 |
PCT/EP2010/001796 WO2010115516A1 (fr) | 2009-04-11 | 2010-03-23 | Transformateur de puissance avec noyau amorphe |
US13/248,645 US8786390B2 (en) | 2009-04-11 | 2011-09-29 | Power transformer with amorphous core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09005285.3A EP2239745B1 (fr) | 2009-04-11 | 2009-04-11 | Transformateur de performance doté d'un noyau amorphe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2239745A1 EP2239745A1 (fr) | 2010-10-13 |
EP2239745B1 true EP2239745B1 (fr) | 2013-04-10 |
Family
ID=41050945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09005285.3A Active EP2239745B1 (fr) | 2009-04-11 | 2009-04-11 | Transformateur de performance doté d'un noyau amorphe |
Country Status (8)
Country | Link |
---|---|
US (1) | US8786390B2 (fr) |
EP (1) | EP2239745B1 (fr) |
KR (1) | KR101695345B1 (fr) |
CN (1) | CN102388424B (fr) |
BR (1) | BRPI1010257B1 (fr) |
CA (1) | CA2758282C (fr) |
ES (1) | ES2404823T3 (fr) |
WO (1) | WO2010115516A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011081337A1 (de) * | 2011-08-22 | 2013-02-28 | Heinrich Georg Gmbh Maschinenfabrik | Vorrichtung zum Transportieren von mehrlagig übereinander angeordnetem, dünnschichtigem Bandmaterial aus einem amorphen Material |
KR101706514B1 (ko) | 2016-10-20 | 2017-02-13 | 엘에스산전 주식회사 | 몰드 변압기 |
GB2611596B (en) * | 2021-01-15 | 2023-11-01 | Zhongbian Group Shanghai Transf Co Ltd | Dry-type transformer with elliptical iron core |
CN114883107B (zh) * | 2022-05-07 | 2024-06-04 | 朗峰新材料启东有限公司 | 缓变吸附自叠加式电子元器件制造用绕线设备 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2054567A1 (de) * | 1970-11-06 | 1972-05-10 | Transformatorenunion Ag | Transformator |
JPS5534403A (en) * | 1978-08-31 | 1980-03-11 | Hitachi Ltd | Molded transformer |
JPS5666022A (en) * | 1979-11-02 | 1981-06-04 | Hitachi Ltd | Molded transformer |
JPS58164205A (ja) * | 1982-03-24 | 1983-09-29 | Mitsubishi Electric Corp | 耐震形乾式変圧器 |
US5396210A (en) * | 1993-03-17 | 1995-03-07 | Square D Company | Dry-type transformer and method of manufacturing |
US6374480B1 (en) * | 1998-05-13 | 2002-04-23 | Abb Inc. | Method and apparatus for making a transformer core from amorphous metal ribbons |
DE69922094T2 (de) * | 1998-07-31 | 2005-12-01 | Hitachi, Ltd. | Transformatorkern aus amorphem Metall |
IL126748A0 (en) * | 1998-10-26 | 1999-08-17 | Amt Ltd | Three-phase transformer and method for manufacturing same |
US6326877B1 (en) | 1999-06-16 | 2001-12-04 | Square D Company | Transformer coil support structure |
DE10148946C2 (de) * | 2001-09-28 | 2003-09-04 | Siemens Ag | Elektrische Wicklungsanordnung |
US6873239B2 (en) * | 2002-11-01 | 2005-03-29 | Metglas Inc. | Bulk laminated amorphous metal inductive device |
US6806803B2 (en) * | 2002-12-06 | 2004-10-19 | Square D Company | Transformer winding |
CN100498991C (zh) * | 2004-12-03 | 2009-06-10 | 上海置信电气股份有限公司 | 一种非晶合金铁芯干式配电变压器的器身结构 |
CN201036129Y (zh) * | 2007-04-26 | 2008-03-12 | 南京大全变压器有限公司 | 非晶合金干式变压器的铁心装配及线圈压紧结构 |
CN201138599Y (zh) * | 2007-11-30 | 2008-10-22 | 广东钜龙电力设备有限公司 | 一种新型的非晶合金铁芯干式变压器 |
-
2009
- 2009-04-11 EP EP09005285.3A patent/EP2239745B1/fr active Active
- 2009-04-11 ES ES09005285T patent/ES2404823T3/es active Active
-
2010
- 2010-03-23 KR KR1020117023776A patent/KR101695345B1/ko active IP Right Grant
- 2010-03-23 CN CN201080017086.9A patent/CN102388424B/zh active Active
- 2010-03-23 CA CA2758282A patent/CA2758282C/fr active Active
- 2010-03-23 WO PCT/EP2010/001796 patent/WO2010115516A1/fr active Application Filing
- 2010-03-23 BR BRPI1010257-4A patent/BRPI1010257B1/pt active IP Right Grant
-
2011
- 2011-09-29 US US13/248,645 patent/US8786390B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CA2758282A1 (fr) | 2010-10-14 |
KR20110137353A (ko) | 2011-12-22 |
US8786390B2 (en) | 2014-07-22 |
CN102388424A (zh) | 2012-03-21 |
KR101695345B1 (ko) | 2017-01-13 |
CN102388424B (zh) | 2015-05-20 |
CA2758282C (fr) | 2016-01-26 |
EP2239745A1 (fr) | 2010-10-13 |
ES2404823T3 (es) | 2013-05-29 |
WO2010115516A1 (fr) | 2010-10-14 |
BRPI1010257A2 (pt) | 2016-03-22 |
BRPI1010257B1 (pt) | 2019-07-02 |
US20120068800A1 (en) | 2012-03-22 |
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