WO2014170978A1 - Transformateur - Google Patents

Transformateur Download PDF

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Publication number
WO2014170978A1
WO2014170978A1 PCT/JP2013/061430 JP2013061430W WO2014170978A1 WO 2014170978 A1 WO2014170978 A1 WO 2014170978A1 JP 2013061430 W JP2013061430 W JP 2013061430W WO 2014170978 A1 WO2014170978 A1 WO 2014170978A1
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WO
WIPO (PCT)
Prior art keywords
iron core
transformer
tank
fastener
steady rest
Prior art date
Application number
PCT/JP2013/061430
Other languages
English (en)
Japanese (ja)
Inventor
圭亮 久保田
貴晃 長谷川
康 真島
Original Assignee
株式会社日立産機システム
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日立産機システム filed Critical 株式会社日立産機システム
Priority to PCT/JP2013/061430 priority Critical patent/WO2014170978A1/fr
Priority to CN201380074975.2A priority patent/CN105051838B/zh
Priority to DK13882487.5T priority patent/DK2988310T3/en
Priority to JP2015512240A priority patent/JP6499073B2/ja
Priority to EP13882487.5A priority patent/EP2988310B1/fr
Priority to TW102142112A priority patent/TWI501267B/zh
Publication of WO2014170978A1 publication Critical patent/WO2014170978A1/fr

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    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266—Fastening or mounting the core on casing or support
    • 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

Definitions

  • the present invention relates to a transformer such as an oil-filled transformer, and more particularly to a structure in which an iron core coil assembly housed in a transformer can withstand shaking and inclination.
  • Patent Document 1 Japanese Patent Laid-Open No. 2008-103578
  • the transformer main body is interposed via the anti-vibration rubber.
  • the transformer body was equipped with an anti-rest fitting, an anti-rest seat was installed on the outer plate on the panel side, and a bolt was fixed to the anti-rest fitting.
  • An invention that solves this problem is disclosed by providing a round hole in the seat and passing the bolt through the round hole, and in a normal state, the bolt and the round hole of the steady rest are not in contact with each other. ing.
  • transformers such as oil-filled transformers for power distribution are usually installed on land, they are considered for shaking and vibration during transportation, but transformers are installed in towers of ships and floating offshore wind power generation. It does not take into account the shaking and tilting of the waves.
  • transformers When a transformer is used in a ship or a tower of a floating offshore wind power generator, there is a possibility that the iron core and coil in the tank of the transformer will be displaced by constantly adding shaking and inclination.
  • the purpose of the present invention is to prevent the iron core or coil in the transformer tank from being shaken or tilted by external energy such as waves when the transformer is installed in a ship or a floating offshore wind power generation tower. It is to provide a transformer to obtain.
  • the present application includes a plurality of means for solving the above-mentioned problems.
  • an iron core, a coil wound around the iron core, an upper iron core fastener for fixing the iron core from above and below and
  • an anti-static metal fitting for an iron core coil assembly in which the iron core and the coil are incorporated in the upper iron core fastener is disposed, and the anti-static metal fitting is cut off. It has a notch, and the tank is characterized in that a protrusion having a shape that fits into the notch of the steady rest fitting is disposed on the inside.
  • the entire core coil assembly for assembling the coil and the iron core in the tank of the transformer is used as the tank.
  • the external appearance perspective view of the iron core coil assembly of Example 1 of this invention is shown.
  • 1B is a perspective view of parts obtained by disassembling the iron core coil assembly of FIG. 1A.
  • FIG. The perspective view of the steady rest metal fitting of the iron core coil assembly of the present invention is shown.
  • a cross-sectional view of the tank of the transformer is shown.
  • positioning of the components inside a transformer, and the figure of the relationship between the steadying metal fitting of an iron core coil assembly, and the stay of a transformer are shown.
  • the external appearance perspective view of the iron core coil assembly of Example 2 of this invention is shown.
  • the external appearance perspective view of the iron core coil assembly of Example 3 of this invention is shown.
  • the external appearance perspective view of the iron core coil assembly of Example 4 of this invention is shown.
  • the external appearance perspective view of the iron core coil assembly of Example 5 of this invention is shown. It is a figure which shows the relationship between the steadying metal fitting of an iron core coil assembly, and the stay of a transformer.
  • the external appearance perspective view of the iron core coil assembly of Example 6 of this invention is shown.
  • the external appearance perspective view of an iron core coil assembly when the iron core of the iron core coil assembly of this invention is used as a wound iron core is shown.
  • FIG. 7B is a perspective view of parts obtained by disassembling the iron core coil assembly of FIG. 7A.
  • the external appearance perspective view of an oil-filled transformer is shown.
  • Example 1A shows a perspective view of a core coil assembly of a transformer according to a first embodiment of the present invention
  • FIG. 1B shows a perspective view of parts obtained by disassembling the core coil assembly of FIG. 1A.
  • reference numeral 200 denotes an iron core coil assembly
  • reference numerals 1 and 2 denote lower iron core fasteners
  • reference numerals 3 and 4 denote longitudinal end portions of the lower iron core fastener
  • studs for fastening two lower iron core fasteners denoted.
  • coils 5, 6, and 7 are inserted into the product core 12.
  • the stacked iron core 12 includes a strip type, a frame type, and a V-notch type.
  • a strip type core is shown.
  • a strip-type iron core is formed by stacking silicon steel plates cut into strips to form a leg portion and a yoke portion of the iron core. And when inserting the coils 5, 6, and 7, one yoke part is removed, a coil is inserted, a yoke part is returned again, and the iron core of a three-phase tripod is assembled.
  • the two lower iron core fasteners 1, 2 and the upper iron core fasteners 8, 9 face each other and are arranged in parallel to sandwich the iron core 12, and studs Fasten with 3, 4, 10, and 11. Then, the lower iron core fasteners 1 and 2 and the upper iron core fasteners 8 and 9 are fastened by the studs 15 to 22.
  • the structure of the lower iron core fastener and the upper iron core fastener is a structure in which an elongated metal plate having a U-shape is opposed to the bottom of the U-shape, and the stacked iron core 12 is sandwiched between the bottom portions.
  • the part to be fastened is a U-shaped bottom part and an end part other than the stacked iron core 12, and is on the center line in the longitudinal direction of the bottom part.
  • the lengths of the lower core fasteners 1 and 2 and the upper core fasteners 8 and 9 are longer than the length in the longitudinal direction formed by inserting the three coils 5, 6, and 7 into the stacked iron core 12. The length is extended by the length of the stud that fastens the fastener, and the size is reduced.
  • the studs 15 to 22 for fastening the lower iron core fasteners 1 and 2 and the upper iron iron fasteners 8 and 9 are formed on the upper side of the U-shaped upper iron core in the case of the lower iron core fasteners 1 and 2. In the case of the fasteners 8 and 9, they are formed on the lower side of the U-shape, and the locations are two points that are divided into approximately three equal parts with the ends of the upper and lower iron core fasteners.
  • insulating walls 23 to 28 are provided between the coils 5, 6, 7 and the upper iron core fasteners 8, 9 and the lower iron core fasteners 1, 2, so as to insulate the coils from the iron core.
  • the insulating walls 23 to 28 also insulate the coil from the upper and lower iron core fasteners.
  • craft paper or press board for epoxy-based electric insulation which is generally excellent in moisture resistance, heat resistance and oil resistance, is adopted.
  • the assembly of the coil and the stacked iron core, and the steady rests 13 and 14 are arranged on the upper side of the upper core fasteners 8 and 9 of the core coil assembly 200 fastened with the upper and lower iron core fasteners.
  • the steady rests 13 and 14 are installed in such a manner that the upper sides formed by facing the U-shaped bottom portions of the two upper core fasteners 8 and 9 face each other at a point that is approximately divided into three equal parts. .
  • the steady rests 13 and 14 are formed of rectangular and long metal plates, and the length in the longitudinal direction is inside the transformer tank so as to be accommodated in the transformer tank. The length is slightly shorter than the length of the short side.
  • recess-shaped notches 131 and 132 are formed at the center of both ends of the short side of the steady rest 13.
  • the steady rests 13 and 14 are installed and fixed to the upper sides of the upper iron core fasteners 8 and 9 by screwing or welding.
  • FIG. 1D shows a cross-sectional view of the tank 29 of the transformer.
  • the tank 29 is long in the direction in which the coils are arranged, and the cross section of the tank is a horizontally long rectangle.
  • convex (protrusion) stays 291 to 294 are arranged at two locations that divide the length in the longitudinal direction inside the tank into approximately three equal parts and at two locations inside the tank that face the two locations.
  • FIG. 1E shows a top view of the inside of the tank when the core coil assembly shown in FIG. 1A is housed in the tank of the transformer.
  • FIG. 1E is a top view in which the iron coil assembly is housed in the tank of the transformer.
  • the stacked iron core 12 is sandwiched between two upper iron core fasteners 8 and 9, and the length of the upper iron core fastener in the longitudinal direction is as follows.
  • the studs 10 and 11 for fastening the upper iron core fasteners 8 and 9 to each other are slightly shorter than the length in the longitudinal direction of the tank, and are fastened at both ends of the iron core fasteners at locations away from the core.
  • the steady-state metal fittings 13 and 14 of the iron core coil assembly are arranged substantially vertically at the upper part of the upper iron core fasteners 8 and 9 and are roughly perpendicular to the transformer tank. It is comprised so that it may become.
  • the recess-shaped notches 131, 132, 141, 142 of the steady-state fittings 13, 14 of the iron core coil assembly fit into the stays 291-294 arranged in the tank of the transformer.
  • FIG. 1E (b) is an enlarged view of this fitting state (A part of FIG. 1E), and FIG. 1E (c) shows a perspective view of the state.
  • FIGS. 1E (b) and (c) show a state in which the stay in the transformer tank and the steady-state fitting of the iron core coil assembly are fitted, and the width t of the stay 294 in the tank 29 is A slight gap is provided and narrower than the width T of the recess-shaped notch of the steady rest 14.
  • the thickness (L) of the stay in the tank of the transformer is made thicker than the thickness (l) of the steady-state fitting 14 of the iron coil assembly. This is in order to prevent the transformer from being disengaged due to shaking or tilting. With such a configuration, when the iron core coil assembly is suspended and stored in the transformer tank, tanking can be performed using the stay as a guide.
  • FIG. 2 is a perspective view of the iron coil assembly showing the configuration of the second embodiment.
  • the difference from the first embodiment is the shape of the steady rest of the iron coil assembly.
  • the steady rests 30, 31, 32, 33 are arranged on the upper side of the U-shaped upper core fasteners 8 and 9.
  • the shape of the steady rests 30, 31, 32, and 33 is not a shape that bridges the two core fasteners 8 and 9 as in the first embodiment, but a rectangular shape that is arranged on the upper side of each of the iron core fasteners.
  • the places to be arranged are two places where the lengths of the iron core fasteners 8 and 9 in the longitudinal direction are roughly divided into three equal parts.
  • recess-shaped notches 301, 311, 321, 331 are formed at the center of the outer side.
  • convex-shaped stays that fit into 301, 311, 321, and 331 are formed inside the tank of the transformer.
  • the steady rests 30 and 31 and the steady rests 32 and 33 are arranged at positions facing each other, but the positions of the steady rests can be made different from each other. It is also possible to increase.
  • FIG. 3 is a perspective view of the core coil assembly showing the configuration of the third embodiment, and the configuration different from the configuration of the first embodiment is the configuration of the steady rest fitting of the core coil assembly. Since the rest of the rest is the same as that of the first embodiment, description thereof is omitted.
  • the third embodiment has a configuration in which the steadying fittings of the iron coil assembly installed on the upper iron core fasteners 8, 9 are integrated with the iron core fasteners 8, 9.
  • the steady rests 34 to 37 are formed by forming a rectangular protrusion on the upper side portion of the upper iron core fasteners 8 and 9 and bending or pressing.
  • recess-shaped notches 341, 351, 361, and 371 are formed in the central portion of the tip of the steady fitting that is integrated with the upper iron core fastener.
  • a stay that fits the steady rest fitting is arranged in the transformer tank. According to the configuration of the third embodiment as described above, it is not necessary to fix the iron core fastener by screws or welding as in the first and second embodiments, and since it is integrated, the steady rest can be formed with high accuracy.
  • FIG. 4 shows a perspective view of the iron coil assembly having the configuration of the fourth embodiment.
  • the difference from the first embodiment is that the steady rest metal fittings are arranged at two ends of the upper iron core fastener in addition to the arrangement of the first embodiment.
  • a rectangular metal plate is formed so as to bridge the iron core fasteners 8 and 9.
  • the steady rests 40, 41 disposed at both ends of the iron core fasteners 8, 9 are formed with recess-shaped notches 401, 411 at the outer center of both.
  • stays that fit into the steady rests 13 and 14 and the steady rests 40 and 41 are disposed in the tank of the transformer.
  • the longitudinal shaking of the iron core coil assembly 200 can be prevented by the steady rests 13 and 14, and the short direction shaking can be prevented by the steady rests 40 and 41. Therefore, it is possible to prevent a core coil assembly that swings in two dimensions.
  • FIG. 5A is a perspective view of the core coil assembly showing the configuration of the fifth embodiment.
  • the difference from the configuration of the first embodiment is that the steady rest is placed below the lower core fastener in addition to the arrangement of the first embodiment. It is the point arrange
  • the lower iron core fasteners 1 and 2 are provided with two lower iron core fasteners 1 and 50 having the same dimensions as the upper anti-metal fittings on the lower side of the lower iron core fasteners 1 and 2. The difference is that it is placed and fixed by bridging to 2.
  • concave cutouts 501 and 511 are formed at the center of both ends of the short sides of the lower steady rests 50 and 51.
  • the steady rests 13 disposed on the upper core fasteners 8 and 9 and the steady rests 50 installed on the lower core fasteners 1 and 2 are arranged so as to coincide with each other in the vertical direction.
  • 14 and the lower steady rest 51 are arranged so as to coincide with each other in the vertical direction, and as a result, the recesses formed in the steady rest are configured so as to coincide with each other in the vertical direction.
  • the iron coil assembly 200 can be housed using the stay 52 formed in the tank 29 of the transformer as a guide.
  • FIG. 5B shows a rectangular parallelepiped stay (protrusion) 52 arranged vertically in the tank 29 of the transformer, and recess-shaped notches 132 and 501 of the upper and lower steady-stop fittings 13 and 50 of the core coil assembly 200.
  • FIG. It is a figure which shows the state which is suitable.
  • Such an anti-sway structure in the upper and lower parts in the tank of the transformer can prevent the iron coil assembly from shaking and tilting against shaking and tilting outside the transformer.
  • Example 6 of the present invention will be described with reference to the drawings.
  • the steadying fittings 13 and 14 of the upper iron core fastener 8 and the steadying metal fittings 50 and 51 of the lower iron core fastener 9 are each formed of an elongated rectangular metal plate, but FIG.
  • the perspective view of the iron-core coil assembly of the structure which integrated the up-and-down steady metal fitting with the up-and-down iron core fastener, respectively is shown.
  • the structure in which the steady rest metal fittings are integrated is as described in the third embodiment.
  • the bottom metal fittings 64 and 65 are also formed integrally with the lower iron core fasteners 1 and 2.
  • the steady rest metal fitting is formed integrally with the iron core fastener, the position of the steady rest metal fitting is manufactured with high accuracy, and it is particularly easy to perform vertical positioning. And tanking work can be done smoothly.
  • FIG. 7A shows a perspective view of the core coil assembly of the transformer of the seventh embodiment
  • FIG. 7B shows a perspective view of parts by disassembling the core assembly 200 of FIG. 7A
  • 70 is a wound iron core
  • 71, 72 and 73 are coils
  • 74 is an upper iron core fastener
  • 75 is a lower iron core fastener
  • 76 and 77 are steady-state metal fittings for the iron core coil assembly
  • 78-85 Is a stud for fastening the upper iron core fastener 74 and the lower iron core fastener 75
  • 86 to 91 are insulating walls.
  • coils 71, 72, and 73 are inserted into the wound core 70.
  • the winding core 70 has a configuration as shown in FIG. 7B.
  • the upper wrap portion of the winding core is opened, a coil is inserted, and a lapping operation is performed to assemble the winding core and the coil.
  • insulating walls 86 to 91 are sandwiched between the wound iron core 70 and the coils 71, 72, 73 to insulate the wound iron core from the coil.
  • the insulating wall also insulates the upper core fastener 74 and the lower core fastener 75 from each other.
  • the upper iron core clamp 74 and the lower iron core clamp 75 sandwich the wound iron core 70 in the vertical direction, and the stud 78- Fasten at 85.
  • the upper iron core fastener 74 and the lower iron core fastener 75 are different in structure from those of the first embodiment, and the structure is formed by bending the front end of an elongated U-shaped side to form a flange portion 99, and the U-shaped clamp.
  • the recessed portion is formed into an inverted U shape and a U shape, and the wound iron core 70 is sandwiched from above and below, and the flange portion 99 is fastened by the studs 78 to 85.
  • the steady rests 76 and 77 of the core coil assembly 200 are arranged on the U-shaped flat U-shaped flat part of the upper core fastener 74.
  • the steady rests 76 and 77 are elongated rectangular metal plates, and are arranged on a flat portion of the upper surface of the upper core fastener 74 perpendicular to the longitudinal direction and fixed by screwing or welding. Further, recess-shaped notches 761, 762, 771, and 772 are formed at the center of both ends of the short sides of the steady rests 76 and 77, respectively.
  • the stay corresponding to the recess-shaped cutouts of the steady rests 76 and 77 is arranged in the transformer tank, so that the configuration of the seventh embodiment is accommodated in the transformer tank.
  • Transformers manufactured by tanking and lubricating are constructed to withstand shaking.
  • FIG. 8 is a perspective view showing the external appearance of an oil-filled iron core transformer equipped with a silicon steel plate or an amorphous ribbon steel core.
  • an oil-filled iron core transformer 100 is generated from a coil, an iron core, or the like by providing wave ribs 95 on the periphery of a tank 29 containing insulating oil for insulating and cooling a coil mounted on a stacked iron core or a wound iron core. It has a structure that cools the heat.
  • FIG. 8 is a perspective view showing the external appearance of an oil-filled iron core transformer equipped with a silicon steel plate or an amorphous ribbon steel core.
  • an oil-filled iron core transformer 100 is generated from a coil, an iron core, or the like by providing wave ribs 95 on the periphery of a tank 29 containing insulating oil for insulating and cooling a coil mounted on a stacked iron core or a wound iron core. It has a structure that cools the heat.
  • reference numeral 96 denotes a welding line welded and fixed to the top and bottom of the wave rib 95 to give the wave rib 95 strength and prevent deformation.
  • Reference numeral 97 denotes a primary side terminal installed at the upper part of the tank 29, which is a terminal for connecting a high voltage power source transmitted from the power plant.
  • Reference numeral 98 denotes a secondary side terminal installed at the upper part of the tank 29, which is connected to send a voltage stepped up or down by a transformer to the load side.
  • the core coil assembly shown in FIG. 1A that is, an assembly having a configuration in which the coils are arranged in the horizontal direction is housed in the tank 29, the entire transformer has a horizontally long shape.
  • Notch having a concave shape 50, 51 ... Stabilizers installed on the lower core clamp 501, 502... Notch having a concave shape, 52.
  • Stay 60, 61: Stabilizing bracket integrated with the upper core clamp, 62, 63 ... Stabilizer fitting integrated with the lower core clamp 601, 611, 641, 651... Notch having a concave shape
  • 70 Rolled iron core, 71, 72, 73 ... coils, 74 ..
  • Upper iron core fastener 75 ...
  • Lower iron core clamp 76, 77 ... Stabilizer for iron coil assembly, 761, 762, 771, 772 ...

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

Dans des transformateurs tels que des transformateurs remplis d'huile, si le transformateur est placé à l'intérieur d'un navire ou d'une tour d'énergie éolienne flottante, il y a une possibilité pour qu'un déplacement puisse se produire vers un enroulement ou un noyau à l'intérieur d'un réservoir du transformateur si une oscillation ou une inclinaison continue à être ajoutée au transformateur par des effets de vagues, ou analogues. A cet effet, la présente invention porte sur un transformateur, qui peut supporter les effets de ces vagues. La présente invention porte sur un transformateur comportant des noyaux, des enroulements enroulés autour des noyaux, un dispositif de fixation de noyau supérieur et un dispositif de fixation de noyau inférieur qui fixent les noyaux à partir des directions supérieure et inférieure respectives, et un réservoir qui renferme ces derniers, dans lequel transformateur : sur le dispositif de fixation de noyau supérieur sont disposés des raccords métalliques anti-vibration pour un ensemble noyaux-enroulements incorporant les noyaux et les enroulements ; les raccords métalliques anti-vibration ayant des encoches ; et des saillies de formes correspondant aux encoches des raccords métalliques anti-vibration étant disposées sur le côté interne du réservoir.
PCT/JP2013/061430 2013-04-17 2013-04-17 Transformateur WO2014170978A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/JP2013/061430 WO2014170978A1 (fr) 2013-04-17 2013-04-17 Transformateur
CN201380074975.2A CN105051838B (zh) 2013-04-17 2013-04-17 变压器
DK13882487.5T DK2988310T3 (en) 2013-04-17 2013-04-17 Transformer
JP2015512240A JP6499073B2 (ja) 2013-04-17 2013-04-17 変圧器
EP13882487.5A EP2988310B1 (fr) 2013-04-17 2013-04-17 Transformateur
TW102142112A TWI501267B (zh) 2013-04-17 2013-11-19 transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/061430 WO2014170978A1 (fr) 2013-04-17 2013-04-17 Transformateur

Publications (1)

Publication Number Publication Date
WO2014170978A1 true WO2014170978A1 (fr) 2014-10-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/061430 WO2014170978A1 (fr) 2013-04-17 2013-04-17 Transformateur

Country Status (6)

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EP (1) EP2988310B1 (fr)
JP (1) JP6499073B2 (fr)
CN (1) CN105051838B (fr)
DK (1) DK2988310T3 (fr)
TW (1) TWI501267B (fr)
WO (1) WO2014170978A1 (fr)

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JPWO2018029922A1 (ja) * 2016-08-09 2019-02-14 株式会社日立産機システム 変圧器
WO2019128046A1 (fr) * 2017-12-29 2019-07-04 江苏瑞恩电气股份有限公司 Transformateur de type sec pour dissipation de chaleur et réduction de bruit
CN109979731A (zh) * 2019-05-10 2019-07-05 南通阿斯通电器制造有限公司 一种防震干式变压器及方法
JP2020188093A (ja) * 2019-05-13 2020-11-19 株式会社日立産機システム 変圧器
US11165290B2 (en) * 2017-09-29 2021-11-02 Fuji Electric Co., Ltd. Stationary induction apparatus and power converter using same
JP2021197442A (ja) * 2020-06-15 2021-12-27 株式会社日立産機システム モールド変圧器

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JP6342883B2 (ja) * 2015-12-22 2018-06-13 株式会社日立産機システム 油入変圧器

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JP2008103578A (ja) 2006-10-20 2008-05-01 Hitachi Industrial Equipment Systems Co Ltd 変圧器

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2018029922A1 (ja) * 2016-08-09 2019-02-14 株式会社日立産機システム 変圧器
US11165290B2 (en) * 2017-09-29 2021-11-02 Fuji Electric Co., Ltd. Stationary induction apparatus and power converter using same
WO2019128046A1 (fr) * 2017-12-29 2019-07-04 江苏瑞恩电气股份有限公司 Transformateur de type sec pour dissipation de chaleur et réduction de bruit
CN109979731A (zh) * 2019-05-10 2019-07-05 南通阿斯通电器制造有限公司 一种防震干式变压器及方法
JP2020188093A (ja) * 2019-05-13 2020-11-19 株式会社日立産機システム 変圧器
JP7132885B2 (ja) 2019-05-13 2022-09-07 株式会社日立産機システム 変圧器
JP2021197442A (ja) * 2020-06-15 2021-12-27 株式会社日立産機システム モールド変圧器
JP7344843B2 (ja) 2020-06-15 2023-09-14 株式会社日立産機システム モールド変圧器

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CN105051838A (zh) 2015-11-11
JP6499073B2 (ja) 2019-04-10
JPWO2014170978A1 (ja) 2017-02-16
TW201442047A (zh) 2014-11-01
DK2988310T3 (en) 2018-08-20
EP2988310A4 (fr) 2016-12-14
TWI501267B (zh) 2015-09-21
EP2988310A1 (fr) 2016-02-24
EP2988310B1 (fr) 2018-06-06
CN105051838B (zh) 2018-02-06

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