WO2014170978A1 - Transformer - Google Patents
Transformer Download PDFInfo
- 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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- WIPO (PCT)
- Prior art keywords
- iron core
- transformer
- tank
- fastener
- steady rest
- Prior art date
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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
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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
- H01F27/24—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
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- 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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Abstract
Description
変圧器が船舶や浮体式洋上風力発電のタワー内で使用される場合は、常時揺れや傾斜が付加され続けることで、変圧器のタンク内の鉄心やコイルにずれが生じる可能性がある。 Since 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.
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.
本願は上記課題を解決する手段を複数含んでいるが、その一例を挙げるならば、「鉄心と、該鉄心の周囲に巻回したコイルと、前記鉄心を上下方向から固定する上部鉄心締金具及び下部鉄心締金具と、これらを収納するタンクとを備える変圧器において、前記上部鉄心締金具に前記鉄心とコイルとを組み込んだ鉄心コイル組立体の振れ止め金具を配置し、該振れ止め金具は切欠きを有し、前記タンクは、内側に前記振れ止め金具の切欠きに嵌め合う形状の突起を配置したことを特徴とする。」を特徴とする。 In order to solve the above problems, for example, the configuration described in the claims is adopted.
The present application includes a plurality of means for solving the above-mentioned problems. To give an example of the above, "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 In a transformer comprising a lower iron core fastener and a tank for storing them, 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.
(実施例1)
図1Aは、本発明の実施例1の変圧器の鉄心コイル組立体の斜視図を示し、図1Bは、図1Aの鉄心コイル組立体を分解した部品の斜視図を示す。
図1A及び図1Bにおいて、200は鉄心コイル組立体、1、2は下部鉄心締金具、3、4は下部鉄心締金具の長手方向の端部で、2個の下部鉄心締金具を締結するスタッド、5、6、7はコイル、8、9は上部鉄心締金具、10、11は上部鉄心締金具の長手方向の端部で、2個の上部鉄心締金具を締結するスタッド、12は積鉄心、13、14は鉄心コイル組立体の振れ止め金具である。
15~22は、上部鉄心締金具8、9と、下部鉄心締金具1、2とを締結するスタッド、23~28はコイルと積鉄心12との間に挟む絶縁ウォールである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Example 1)
1A shows a perspective view of a core coil assembly of a transformer according to a first embodiment of the present invention, and FIG. 1B shows a perspective view of parts obtained by disassembling the core coil assembly of FIG. 1A.
1A and 1B,
短冊型積鉄心は、短冊状に切断した珪素鋼板を積み重ねて鉄心の脚部とヨーク部を構成するものである。そして、コイル5、6、7を挿入する場合は、一方のヨーク部を取り去ってコイルを挿入して再度ヨーク部を戻して、三相三脚の鉄心を組み立てる。積鉄心12とコイル5、6、7を組み立てた後、二本の下部鉄心締金具1、2と上部鉄心締金具8、9とを向かい合わせ、平行に配置して積鉄心12を挟み込み、スタッド3、4、10、11で締結する。
そして、下部鉄心締金具1、2と上部鉄心締金具8、9とをスタッド15~22で締結する。ここで、下部鉄心締金具と上部鉄心締金具の構造は、コ字形状を成した細長い金属板をコ字形状の底部を向かい合わせた構成で、この底部の部分で積鉄心12を挟み込む。そして、下部鉄心締金具1、2同士、及び上部鉄心締金具8、9同士をスタッド3、4、10、11で締結する。締結する箇所は、コ字形状の底部で、かつ積鉄心12を挟んだ以外の端部の部分で、底部の長手方向の中心線上にしている。 In FIG. 1A,
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
Then, the lower
図1Dは、変圧器のタンク29の横断面図を示し、タンク29はコイルが並ぶ方向に長くなっており、そのタンクの断面は横長の矩形となっている。
そして、タンク内側の長手方向の長さをおよそ3等分する2ヶ所と、この2ヶ所と対向したタンク内側の2ヶ所に凸形状(突起)のステー291~294を配置する。 Next, the
FIG. 1D shows a cross-sectional view of the
Then, 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.
図1Eは、変圧器のタンク内に鉄心コイル組立体を収納した上面図で、積鉄心12は2本の上部鉄心締金具8、9で挟まれ、上部鉄心締金具の長手方向の長さは、タンクの長手方向の長さより僅かに短い長さとし、上部鉄心締金具8、9同士を締結するスタッド10、11は鉄心締金具の両端で、積鉄心より離れた個所で締結している。
また、鉄心コイル組立体の振れ止め金具13、14は、上部鉄心締金具8、9の上辺で、およそ3等分した箇所で概垂直に配置し、変圧器のタンクに対しても概垂直になるように構成している。
そして、変圧器のタンク内に配置したステー291~294に鉄心コイル組立体の振れ止め金具13、14の凹部形状の切欠き131、132、141、142が嵌め合う。この嵌め合いの状態を(図1EのA部)を拡大した図が図1E(b)で、図1E(c)にその状態の斜視図を示す。 Next, 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
Further, the steady-
The recess-shaped
このような構成により、鉄心コイル組立体を吊り下げて変圧器のタンク内に収納するとき、ステーをガイドにしてタンキング作業をすることができる。 In the height direction, as shown in FIG. 1E (c), the thickness (L) of the stay in the tank of the transformer is made thicker than the thickness (l) of the steady-
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.
次に、本発明の実施例2について図を用いて説明する。
図2は、実施例2の構成を示した鉄心コイル組立体の斜視図で、実施例1と異なる点は、鉄心コイル組立体の振れ止め金具の形状である。
また、この振れ止め金具以外は実施例1と同じであるため、振れ止め金具以外の説明は省略する。
図2において、上部鉄心締金具8及び9のコ字形状の上辺に振れ止め金具30、31、32、33を配置する。振れ止め金具30、31、32、33の形状は、実施例1のように2本の鉄心締金具8、9を橋渡しする形状ではなく、それぞれの鉄心締金具の上辺に配置する矩形の形状で、配置する箇所は鉄心締金具8、9の長手方向の長さを概略3等分した2ヶ所である。そして、それぞれの振れ止め金具30、31、32、33には、外側の辺中央に凹部形状の切欠き301、311、321、331を形成する。
また、図示していないが、この凹部形状の切欠きに301、311、321、331に嵌め合う凸部形状のステーを変圧器のタンク内側に形成する。 (Example 2)
Next,
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.
Further, since the components other than the steady rest metal fitting are the same as those in the first embodiment, the explanation other than the steady rest fitting is omitted.
In FIG. 2, the steady rests 30, 31, 32, 33 are arranged on the upper side of the U-shaped
Although not shown in the drawings, convex-shaped stays that fit into 301, 311, 321, and 331 are formed inside the tank of the transformer.
次に、本発明の実施例3について図を用いて説明する。
図3は、実施例3の構成を示した鉄心コイル組立体の斜視図を示し、実施例1の構成と異なるのは、鉄心コイル組立体の振れ止め金具の構成である。
また、この振れ止め金具以外は、実施例1と同じであるため説明は省略する。
図3において、実施例3は上部鉄心締金具8、9に設置する鉄心コイル組立体の振れ止め金具を鉄心締金具8、9と一体化した構成である。
振れ止め金具34~37は、上部鉄心締金具8、9のコ字形状の上辺の部分に、矩形形状の突部を形成して折り曲げ加工やプレス加工により構成する。
また、上部鉄心締金具と一体化した振れ止め金具の先端中央部分には凹部形状の切欠き341、351、361、371を形成する。
そして、変圧器のタンク内には、振れ止め金具に嵌め合うステーを配置する。
このような実施例3の構成によると、実施例1、2のように鉄心締金具にネジや溶接などにより固定する必要はなく、また一体化しているので精度良く振れ止め金具を形成できる。 (Example 3)
Next,
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.
In FIG. 3, the third embodiment has a configuration in which the steadying fittings of the iron coil assembly installed on the upper
The steady rests 34 to 37 are formed by forming a rectangular protrusion on the upper side portion of the upper
Further, recess-shaped
In the transformer tank, a stay that fits the steady rest fitting is arranged.
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.
次に、本発明の実施例4について図を用いて説明する。
図4は、実施例4の構成の鉄心コイル組立体の斜視図を示し、実施例1と異なる所は、振れ止め金具を実施例1の配置以外に、上部鉄心締金具の両端に2本の鉄心締金具8、9に橋渡しするように矩形の金属板を形成するものである。
そして、この鉄心締金具8、9の両端に配置した振れ止め金具40、41には、双方の外側中央に凹部形状の切欠き401、411を形成している。
また、振れ止め金具13、14及び振れ止め金具40、41に嵌め合うステーを変圧器のタンク内に配置する。
このような実施例4の構成において、鉄心コイル組立体200の長手方向の揺れは、振れ止め金具13、14により防止でき、短手方向の揺れは振れ止め金具40、41により防止でき、タンク内で2次元に揺れる鉄心コイル組立体を防止できる。 Example 4
Next, a fourth embodiment of the present invention will be described with reference to the drawings.
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
The steady rests 40, 41 disposed at both ends of the
In addition, 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.
In such a configuration of the fourth embodiment, the longitudinal shaking of the iron
次に、本発明の実施例5について図を用いて説明する。
図5Aは、実施例5の構成を示した鉄心コイル組立体の斜視図で、実施例1の構成と異なる点は、振れ止め金具を実施例1の配置以外に下部鉄心締金具の下側に上部鉄心締金具と同じように配置した点である。
すなわち、図5Aにおいて、上部鉄心締金具8、9のコ字形状の上辺に細長い矩形の鉄心コイル組立体の振れ止め金具13、14を橋渡しして配置している点は、実施例1と同じ構成であるが、実施例5は、下部鉄心締金具1、2のコ字形状の下辺に、上側の振れ止め金具と同じ寸法の振れ止め金具50、51を2本の下部鉄心締金具1、2に橋渡しして配置し固定する点が異なる。 (Example 5)
Next,
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 | positioned similarly to an upper iron core fastener.
That is, in FIG. 5A, the same as in the first embodiment, the
このような変圧器のタンク内の上部と下部に振れ止め構成は、変圧器外部の揺れや傾斜に対して、鉄心コイル組立体の揺れや傾斜を防止できる。 5A,
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.
次に、本発明の実施例6について図を用いて説明する。
実施例5の構成では、上部鉄心締金具8の振れ止め金具13、14及び下部鉄心締金具9の振れ止め金具50、51をそれぞれ細長い矩形の金属板で形成していたが、図6は、上下の振れ止め金具をそれぞれ上下の鉄心締金具と一体化した構成の鉄心コイル組立体の斜視図を示している。振れ止め金具を一体化する構成は、実施例3で説明している通りで、実施例6は下部鉄心締金具1、2にも振れ止め金具64、65を一体化して形成するものである。
このように実施例6の構成により、振れ止め金具を鉄心締金具と一体化して形成しているので、振れ止め金具の位置が精度よく製作され、特に上下の位置決めがやり易くなる。そしてタンキング作業をスムーズに行うことができる。 (Example 6)
Next, Example 6 of the present invention will be described with reference to the drawings.
In the configuration of the fifth embodiment, the steadying
As described above, according to the configuration of the sixth embodiment, since 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.
次に、本発明の実施例7について図を用いて説明する。
図7Aは、実施例7の変圧器の鉄心コイル組立体の斜視図を示し、図7Bは図7Aの鉄心組立体200を分解して部品の斜視図を示している。図7A及び図7Bにおいて、70は巻鉄心、71、72、73はコイル、74は上部鉄心締金具、75は下部鉄心締金具、76、77は鉄心コイル組立体の振れ止め金具、78~85は上部鉄心締金具74と下部鉄心締金具75とを締結するスタッド、86~91は絶縁ウォールである。
図7Aにおいて、巻鉄心70にコイル71、72、73を挿入する。
巻鉄心70は、図7Bに示すような構成をしており、挿入する場合は巻鉄心の上側のラップ部を開きコイルを差し込み、ラッピング作業を行い巻鉄心とコイルとを組み立てる。このとき、巻鉄心70とコイル71、72、73の間に絶縁ウォール86~91を挟み、巻鉄心とコイルとの絶縁を行う。また、絶縁ウォールは上部鉄心締金具74、下部鉄心締金具75との絶縁もしている。三相三脚の鉄心を組み上げ、巻鉄心70とコイル71、72、73とを組み上げた後、上部鉄心締金具74と下部鉄心締金具75とで上下方向より巻鉄心70を挟み込んで、スタッド78~85で締結する。
また、上部鉄心締金具74と下部鉄心締金具75は、実施例1とは構造が異なり、その構造は、細長いコ字形状の辺の先端を折り曲げてフランジ部99を形成し、コ字形状の凹部を、逆U字形及びU字形としてそれぞれ上下方向から巻鉄心70を挟み込んで、フランジ部99をスタッド78~85で締結する。
この構成で、上部鉄心締金具74のコ字形状の逆U字形の平坦部に鉄心コイル組立体200の振れ止め金具76、77を配置する。
振れ止め金具76、77は、細長の矩形の金属板で、上部鉄心締金具74の上面の平坦な部分に、長手方向に対し垂直に配置してネジ止めや溶接などにより固定する。
また、振れ止め金具76、77の短辺の両端の中央部には、凹部形状の切欠き761、762、771、772を形成する。そして、実施例1と同様に振れ止め金具76、77の凹部形状の切欠きに対応したステーを変圧器のタンク内に配置することにより、実施例7の構成を変圧器のタンクに収納しすなわちタンキング作業を行い、注油して製造した変圧器は揺れに対して耐える構造となる。 (Example 7)
Next,
FIG. 7A shows a perspective view of the core coil assembly of the transformer of the seventh embodiment, and FIG. 7B shows a perspective view of parts by disassembling the
In FIG. 7A, coils 71, 72, and 73 are inserted into the
The winding
Further, the upper
With this configuration, the steady rests 76 and 77 of the
The steady rests 76 and 77 are elongated rectangular metal plates, and are arranged on a flat portion of the upper surface of the
Further, recess-shaped
また、図8において、96は波リブ95の上下に溶接して固定した溶接線で、波リブ95に強度を持たせ、変形しないようにしている。97はタンク29の上部に設置された一次側端子で、発電所から送電された高電圧の電源を接続する端子である。98は、タンク29の上部に設置された二次側端子で、変圧器で昇圧又は降圧した電圧を負荷側に送るために接続する端子である。 Next, an oil-filled transformer that houses an iron core coil assembly incorporating the iron core and coil of the present invention will be described. 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. In FIG. 8, an oil-filled
In FIG. 8,
3、4‥スタッド、
5、6、7‥コイル、
8、9‥上部鉄心締金具、
10、11‥スタッド、
12‥積鉄心、
13、14‥鉄心コイル組立体の振れ止め金具、
131、132、141、142‥凹部形状の切欠き
15~22‥スタッド、
23~28絶縁ウォール、
29‥タンク、
291、292、293、294‥ステー(突起)、
30、31、32、33‥振れ止め金具、
301、311、321、331‥凹部形状の切欠き、
34、35、36、37‥上部鉄心締金具と一体化した振れ止め金具、
341、351、361、371‥凹部形状の切欠き、
40、41‥振れ止め金具、
401、411‥凹部形状の切欠き、
50、51‥下部鉄心締金具に設置した振れ止め金具、
501、502‥凹部形状の切欠き、
52‥ステー、
60、61‥上部鉄心締金具と一体化した振れ止め金具、
62、63‥下部鉄心締金具と一体化した振れ止め金具、
601、611、641、651‥凹部形状の切欠き、
70‥巻鉄心、
71、72、73‥コイル、
74‥上部鉄心締金具、
75‥下部鉄心締金具、
76、77‥鉄心コイル組立体の振れ止め金具、
761、762、771、772‥凹部形状の切欠き、
78~85‥上部鉄心締金具74と下部鉄心締金具75とを締結するスタッド、86~91‥絶縁ウォール、
95‥波リブ、
96‥溶接線、
97‥一次側端子、
98‥二次側端子、
99‥フランジ部、
100‥油入鉄心変圧器、
200‥鉄心コイル組立体。 1, 2, ... Lower iron core clamp,
3, 4 ... Stud,
5, 6, 7 ... coil,
8, 9 ... Upper core clamp,
10, 11 ... Stud,
12 ... Seki iron core,
13, 14 ... Stabilizer for iron coil assembly,
131, 132, 141, 142... Notches in the shape of
23-28 insulation wall,
29 ... tank,
291 292 293 294 stays (protrusions)
30, 31, 32, 33.
301, 311, 321, 331... Notch in recess shape,
34, 35, 36, 37 ... Stabilizers integrated with the upper core clamp,
341, 351, 361, 371 ... a recess-shaped notch,
40, 41 ... steady rest bracket,
401, 411... 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 ... a recess-shaped notch,
78 to 85, studs for fastening the
95 ... wave ribs,
96. Welding wire,
97 .. Primary side terminal,
98. Secondary side terminal,
99 ... flange part,
100: Oil-filled iron core transformer,
200: Iron core coil assembly.
Claims (9)
- 鉄心と、該鉄心の周囲に巻回したコイルと、前記鉄心を上下方向から固定する上部鉄心締金具及び下部鉄心締金具と、これらを収納するタンクとを備える変圧器において、
前記上部鉄心締金具に前記鉄心とコイルとを組み込んだ鉄心コイル組立体の振れ止め金具を配置し、
該振れ止め金具は切欠きを有し、
前記タンクは、内側に前記振れ止め金具の切欠きに嵌め合う形状の突起を配置したことを特徴とする変圧器。 In a transformer comprising an iron core, a coil wound around the iron core, an upper iron core fastener and a lower iron core fastener for fixing the iron core from above and below, and a tank for storing these,
Arranging a steady rest fitting of the iron core coil assembly in which the iron core and the coil are incorporated in the upper iron core fastener,
The steady rest has a notch,
The said tank has arrange | positioned the protrusion of the shape fitted in the notch of the said steadying metal fitting inside, The transformer characterized by the above-mentioned. - 請求項1記載の変圧器において、
鉄心コイル組立体の振れ止め金具は、矩形の金属板で形成され、長手方向の長さは前記変圧器のタンク内の短辺の長さより僅かに小さくし、
且つ、前記振れ止め金具の短辺の端部の中央部には凹部形状の切欠きを形成したことを特徴とする変圧器。 The transformer according to claim 1, wherein
The steady-state metal fitting of the iron coil assembly is formed of a rectangular metal plate, the length in the longitudinal direction is slightly smaller than the length of the short side in the tank of the transformer,
In addition, a transformer is characterized in that a recess-shaped notch is formed in the central portion of the short side end of the steady rest metal fitting. - 請求項1記載の変圧器において、
前記鉄心コイル組立体の上部鉄心締金具及び下部鉄心締金具は、細長いコ字形状の底部を向かい合わせてスタッドで締結して形成し、前記上部鉄心締金具の上側に前記振れ止め金具を1個またはそれ以上、該上部鉄心締金具の長手方向に対し垂直に橋渡しして配置することを特徴とする変圧器。 The transformer according to claim 1, wherein
The upper iron core fastener and the lower iron core fastener of the iron core coil assembly are formed by fastening an elongated U-shaped bottom face to each other with a stud, and one of the steady rest metal fittings above the upper iron core fastener. Or more, it is bridge | crossed perpendicularly | vertically with respect to the longitudinal direction of this upper core fastener, and the transformer characterized by the above-mentioned. - 請求項1記載の変圧器において、
前記上部鉄心締金具の形状を細長いコ字形状とし、該コ字形の一方の辺に振れ止め金具を一体化して形成することを特徴とする変圧器。 The transformer according to claim 1, wherein
A transformer characterized in that the shape of the upper iron core fastener is an elongated U-shape, and an anti-rest fitting is integrally formed on one side of the U-shape. - 請求項1記載の変圧器において、
前記上部鉄心締金具に配置する前記鉄心コイル組立体の振れ止め金具を、該上部鉄心締金具の長方向及び短手方向にそれぞれ配置する構成とすることを特徴とする変圧器。 The transformer according to claim 1, wherein
A transformer characterized in that the steady-state fittings of the iron core coil assembly arranged in the upper iron core fastener are arranged in the long direction and the short direction of the upper iron core fastener, respectively. - 請求項1記載の変圧器において、
前記鉄心コイル組立体の振れ止め金具の切欠きを凹部形状とし、
該凹部形状に嵌め合う前記変圧器のタンクの突起は直方体形状とし、
該タンクの突起の長さを振れ止め金具の厚みよりも大きくしたことを特徴とする変圧器。 The transformer according to claim 1, wherein
The notch of the steady rest metal fitting of the iron core coil assembly has a concave shape,
The projection of the tank of the transformer that fits into the concave shape is a rectangular parallelepiped shape,
A transformer characterized in that the length of the protrusion of the tank is larger than the thickness of the steady rest metal fitting. - 鉄心と、該鉄心の周囲に巻回したコイルと、前記鉄心を上下方向から固定する上部鉄心締金具と下部鉄心締金具と、これらを収納するタンクとを備える変圧器において、
前記上部鉄心締金具及び下部鉄心締金具に、前記鉄心コイル組立体の振れ止め金具を配置し、
該振れ止め金具に凹部形状の切欠きを形成し、
前記変圧器のタンクに前記振れ止め金具の切欠きと嵌め合う形状の突起を配置することを特徴とする変圧器。 In a transformer comprising an iron core, a coil wound around the iron core, an upper iron core fastener for fixing the iron core from above and below, a lower iron core fastener, and a tank for storing these,
The upper core clamp and the lower core clamp are provided with a steady-state clamp for the core coil assembly,
A recess-shaped notch is formed in the steady rest metal fitting,
A transformer having a shape that fits into the notch of the steady rest fitting is disposed on the tank of the transformer. - 請求項7記載の変圧器において、
前記上部鉄心締金具に配置した振れ止め金具と前記下部鉄心締金具に配置した振れ止め金具とは、鉛直方向で前記凹部形状の切欠きが一致するように配置したことを特徴とする変圧器。 The transformer according to claim 7,
The transformer characterized in that the steady rest fittings arranged on the upper iron core fastener and the steady rest metal fittings arranged on the lower iron core fastener are arranged so that the notches of the recess shape coincide with each other in the vertical direction. - 請求項7記載の変圧器において、
前記振れ止め金具の凹部形状の切欠きに嵌め合うタンク内に配置した突起は、
直方体とし、その長さは上側の振れ止め金具と下側の振れ止め金具の距離より長くしたことを特徴とする変圧器。 The transformer according to claim 7,
The protrusion arranged in the tank that fits into the recess-shaped notch of the steady rest metal fitting,
A transformer that is a rectangular parallelepiped and has a length that is longer than the distance between the upper steady rest and the bottom steady rest.
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EP (1) | EP2988310B1 (en) |
JP (1) | JP6499073B2 (en) |
CN (1) | CN105051838B (en) |
DK (1) | DK2988310T3 (en) |
TW (1) | TWI501267B (en) |
WO (1) | WO2014170978A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2018029922A1 (en) * | 2016-08-09 | 2019-02-14 | 株式会社日立産機システム | Transformer |
WO2019128046A1 (en) * | 2017-12-29 | 2019-07-04 | 江苏瑞恩电气股份有限公司 | Dry-type transformer for heat dissipation and noise reduction |
CN109979731A (en) * | 2019-05-10 | 2019-07-05 | 南通阿斯通电器制造有限公司 | A kind of Shockproof dry transformer and method |
JP2020188093A (en) * | 2019-05-13 | 2020-11-19 | 株式会社日立産機システム | Transformer |
US11165290B2 (en) * | 2017-09-29 | 2021-11-02 | Fuji Electric Co., Ltd. | Stationary induction apparatus and power converter using same |
JP2021197442A (en) * | 2020-06-15 | 2021-12-27 | 株式会社日立産機システム | Molded transformer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6342883B2 (en) * | 2015-12-22 | 2018-06-13 | 株式会社日立産機システム | Oil-filled transformer |
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JPS58142923U (en) * | 1982-03-19 | 1983-09-27 | 愛知電機株式会社 | Transformer contents support device |
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JPS60160518U (en) * | 1984-04-04 | 1985-10-25 | 株式会社東芝 | Transformer contents fixing device |
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- 2013-04-17 JP JP2015512240A patent/JP6499073B2/en active Active
- 2013-04-17 EP EP13882487.5A patent/EP2988310B1/en not_active Not-in-force
- 2013-04-17 CN CN201380074975.2A patent/CN105051838B/en not_active Expired - Fee Related
- 2013-04-17 WO PCT/JP2013/061430 patent/WO2014170978A1/en active Application Filing
- 2013-04-17 DK DK13882487.5T patent/DK2988310T3/en active
- 2013-11-19 TW TW102142112A patent/TWI501267B/en not_active IP Right Cessation
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JPS58142923U (en) * | 1982-03-19 | 1983-09-27 | 愛知電機株式会社 | Transformer contents support device |
JPS6049609U (en) * | 1983-09-12 | 1985-04-08 | 三菱電機株式会社 | Rocking device for boxed stationary electrical equipment |
JPS60160518U (en) * | 1984-04-04 | 1985-10-25 | 株式会社東芝 | Transformer contents fixing device |
JPS6149426U (en) * | 1984-09-04 | 1986-04-03 | ||
JPH0557822U (en) * | 1992-01-09 | 1993-07-30 | 株式会社ダイヘン | Wave case transformer |
JPH0869922A (en) * | 1994-08-31 | 1996-03-12 | Hitachi Ltd | Laminated iron core for transformer |
JP2008103578A (en) | 2006-10-20 | 2008-05-01 | Hitachi Industrial Equipment Systems Co Ltd | Transformer |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2018029922A1 (en) * | 2016-08-09 | 2019-02-14 | 株式会社日立産機システム | Transformer |
US11165290B2 (en) * | 2017-09-29 | 2021-11-02 | Fuji Electric Co., Ltd. | Stationary induction apparatus and power converter using same |
WO2019128046A1 (en) * | 2017-12-29 | 2019-07-04 | 江苏瑞恩电气股份有限公司 | Dry-type transformer for heat dissipation and noise reduction |
CN109979731A (en) * | 2019-05-10 | 2019-07-05 | 南通阿斯通电器制造有限公司 | A kind of Shockproof dry transformer and method |
JP2020188093A (en) * | 2019-05-13 | 2020-11-19 | 株式会社日立産機システム | Transformer |
JP7132885B2 (en) | 2019-05-13 | 2022-09-07 | 株式会社日立産機システム | transformer |
JP2021197442A (en) * | 2020-06-15 | 2021-12-27 | 株式会社日立産機システム | Molded transformer |
JP7344843B2 (en) | 2020-06-15 | 2023-09-14 | 株式会社日立産機システム | mold transformer |
Also Published As
Publication number | Publication date |
---|---|
JP6499073B2 (en) | 2019-04-10 |
EP2988310A1 (en) | 2016-02-24 |
CN105051838B (en) | 2018-02-06 |
EP2988310B1 (en) | 2018-06-06 |
TW201442047A (en) | 2014-11-01 |
EP2988310A4 (en) | 2016-12-14 |
JPWO2014170978A1 (en) | 2017-02-16 |
DK2988310T3 (en) | 2018-08-20 |
CN105051838A (en) | 2015-11-11 |
TWI501267B (en) | 2015-09-21 |
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