JPH0552650B2 - - Google Patents
Info
- Publication number
- JPH0552650B2 JPH0552650B2 JP58233533A JP23353383A JPH0552650B2 JP H0552650 B2 JPH0552650 B2 JP H0552650B2 JP 58233533 A JP58233533 A JP 58233533A JP 23353383 A JP23353383 A JP 23353383A JP H0552650 B2 JPH0552650 B2 JP H0552650B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic shield
- shield plate
- holding
- winding
- core
- 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.)
- Expired - Lifetime
Links
- 230000005291 magnetic effect Effects 0.000 claims description 59
- 238000004804 winding Methods 0.000 claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical class [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 8
- 230000005684 electric field Effects 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 239000012212 insulator Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は鉄心締付金具に取付けられる改良され
た磁気シールド板を備えた変圧器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a transformer with an improved magnetic shield plate attached to a core clamp.
近年電力需要の増大に伴ない変圧器は益々大容
量化される傾向にあり、それに伴ない巻線からの
漏れ磁束も増大している。また変圧器の単器容量
の増大により、益々その効率の向上が要請されて
いる。特に前記した漏れ磁束に起因する漂遊損の
増加と、変圧器構造体に誘起される局部温度上昇
は製品の性能および耐用性などの観点からその改
善が強く要請されている。
In recent years, as the demand for electric power has increased, the capacity of transformers has tended to increase, and leakage flux from the windings has also increased accordingly. Furthermore, as the unit capacity of transformers increases, there is a growing demand for improved efficiency. In particular, there is a strong need to improve the increase in stray loss caused by leakage magnetic flux and the local temperature rise induced in the transformer structure from the viewpoint of product performance and durability.
第１図は変圧器の内容構造を概略的に示すもの
で、上部継鉄４、下部継鉄５を備えた鉄心脚３
に、内側巻線１と外側巻線２を同心的に巻回配置
してある。６および７は鉄心締付金具であり、上
方の鉄心締付金具６は上部継鉄４に取付けられ、
また下方の鉄心締付金具７は下部継鉄５に取付け
られ、これら両鉄心締付金具６および７間に図示
しない締付ロツドを通して鉄心および巻線を上下
方向に強固に締付け固定するものである。ところ
で前記構成の変圧器において、鉄心締付金具６，
７などの構造体での発生損失を低下させる目的か
ら硅素鋼板の如き高透磁率の磁気シールド板８お
よび９を鉄心締付金具６および７付近に配置する
ことが実施されている。 Figure 1 schematically shows the structure of the transformer, in which the core leg 3 is equipped with an upper yoke 4 and a lower yoke 5.
An inner winding 1 and an outer winding 2 are arranged concentrically. 6 and 7 are core tightening fittings, and the upper iron core tightening fitting 6 is attached to the upper yoke 4,
Further, the lower core fastening fitting 7 is attached to the lower yoke 5, and a tightening rod (not shown) is passed between the two core fastening fittings 6 and 7 to firmly tighten and fix the core and the winding in the vertical direction. . By the way, in the transformer having the above configuration, the iron core clamping fittings 6,
In order to reduce the loss generated in structures such as 7, magnetic shield plates 8 and 9 having high magnetic permeability, such as silicon steel plates, are arranged near the iron core fastening fittings 6 and 7.
これら磁気シールド板８，９は例えば第２図に
示すように、三相変圧器にあつては各相巻線１，
２に渡るよう鉄心締付金具６の長手方向に沿つて
配置される。これにより120°の位相差をもつ三相
各相からの漏れ磁束φu，φv，φwは磁気シールド
板８に流入、流出を行ない、漏れ磁束の大部分が
この磁気シールド板８中を通過する結果、各構造
物に発生する損失の低減や温度上昇の防止が可能
となるもので、このような構成は実公昭54−
17768号公報に開示されている。 For example, as shown in FIG. 2, these magnetic shield plates 8, 9 are used for each phase winding 1,
It is arranged along the longitudinal direction of the iron core tightening fitting 6 so as to span two parts. As a result, the leakage magnetic flux φ u , φ v , φ w from each of the three phases with a phase difference of 120° flows into and out of the magnetic shield plate 8, and most of the leakage magnetic flux flows through the magnetic shield plate 8. As a result, it is possible to reduce the loss that occurs in each structure and prevent temperature rise, and this type of configuration was developed in 1973.
It is disclosed in Publication No. 17768.
また上方に位置する磁気シールド板８の取付構
成としては第３図に示すように、継鉄４および巻
線１，２を締付ける鉄心締付金具６に絶縁物１０
を介装し、磁気シールド板８がボルト１１、ナツ
ト１１Ａにより固定される。１２は巻線押しボル
トであり、鉄心締付金具６に螺着しその頭部１２
Ａにより巻線締付板１３を介して前記巻線１，２
を締付ける。このような構成は特開昭52−41823
号公報に詳細に開示されている。 Furthermore, as shown in FIG. 3, the magnetic shield plate 8 located above is attached with an insulator 10 attached to the iron core clamp 6 that tightens the yoke 4 and the windings 1 and 2.
The magnetic shield plate 8 is fixed with bolts 11 and nuts 11A. Reference numeral 12 denotes a wire-wound push bolt, which is screwed onto the core tightening fitting 6 and whose head 12
The windings 1 and 2 are connected to each other through the winding clamping plate 13 by A.
Tighten. Such a configuration is disclosed in Japanese Patent Application Laid-Open No. 52-41823.
The details are disclosed in the publication.
しかしこのような取付構成においては、磁気シ
ールド板８にボルト１１、巻線押しボルト１２等
を貫通するための穴を数多く設ける必要があり、
大形変圧器の各相に渡つて配置される磁気シール
ド板８の取付けに際しては特に多くの作業工数を
必要とする。しかも磁気シールド板８が一体でか
つ鉄心締付金具６と絶縁物１０を介装して密着さ
れる構造のために巻線１，２から流れ出た絶縁油
による冷却効果が十分に発揮されず、特に漏れ磁
束が大きくなる大容量の変圧器では磁気シールド
板８自体が過熱する恐れがある。 However, in such a mounting configuration, it is necessary to provide many holes in the magnetic shield plate 8 for passing the bolts 11, winding push bolts 12, etc.
A particularly large number of man-hours are required to attach the magnetic shield plates 8 that are arranged across each phase of a large transformer. Moreover, because the magnetic shielding plate 8 is integrated and is tightly attached to the core clamping fitting 6 through the insulator 10, the cooling effect of the insulating oil flowing out from the windings 1 and 2 is not sufficiently exerted. In particular, in a large-capacity transformer where leakage magnetic flux is large, there is a risk that the magnetic shield plate 8 itself may overheat.
一方、取付性と冷却性の向上を図つたものとし
て特開昭52−41823号公報、特開昭57−1208号公
報、特開昭57−7106号公報、及び実開昭54−
159062号公報記載のものが知られている。しか
し、特開昭52−41823号公報記載のものでは、締
付金具と巻線締付ボルトが別体になつているの
で、取り付け作業において、締付金具につる巻を
装着した巻線締付ボルトを挿入してナツトを螺合
させる必要があり、作業が面倒になつている。 On the other hand, Japanese Patent Laid-Open Nos. 52-41823, 1208-1980, 7106-1986, and Utility Model Laid-Open No. 54-1982 are published as methods aiming to improve installation and cooling performance.
The one described in Publication No. 159062 is known. However, in the device described in JP-A No. 52-41823, the tightening fitting and the winding tightening bolt are separate, so during installation work, the winding tightening with the helical coil attached to the tightening fitting is difficult. It is necessary to insert a bolt and screw together a nut, making the work cumbersome.
また、特開昭57−1208号公報及び特開昭57−
7106号記載のものには、冷却性を考慮した構成が
開示されているが、磁気シールド板の端部での電
界集中には何等考慮が払われているわけではな
い。 Also, JP-A-57-1208 and JP-A-57-
No. 7106 discloses a configuration that takes cooling performance into consideration, but no consideration is given to electric field concentration at the end of the magnetic shield plate.
さらに、実開昭54−159062号公報記載のものに
は、スペーサを介して複数個に分割された磁気シ
ールド板を所定位置に締め付け保持するものにお
いて、スペーサにより生じたギヤツプ部に締付ロ
ツドなどの固定部材を貫通して設けるようにした
構成が記載されているが、締付ロツドと締付金具
とは別体に構成されているので、作業性に問題が
あるとともに、前述のものと同様に磁気シールド
板の端部での電界集中に何等考慮は払われてはい
ない。 Furthermore, in the device described in Japanese Utility Model Application Publication No. 54-159062, a magnetic shield plate divided into a plurality of pieces is tightened and held in a predetermined position via a spacer, and a tightening rod or the like is attached to the gap formed by the spacer. A structure is described in which the fixing member is provided through the fixing member, but since the tightening rod and the tightening metal fitting are configured separately, there is a problem with workability and the problem is similar to the above-mentioned one. No consideration was given to electric field concentration at the edge of the magnetic shield plate.
本発明の目的は前記した従来技術の欠点を除
き、鉄心締付金具に上方に位置する磁気シールド
板を簡便に保持できると共に、磁気シールド板の
電界集中を緩和できる変圧器を提供するにある。
SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art as described above, and to provide a transformer that can easily hold a magnetic shield plate located above on a core clamping fitting and alleviate electric field concentration on the magnetic shield plate.
この目的を達成するため、本発明は上方に位置
する磁気シールド板をその幅方向に複数個の単位
に分割し、これら分割された各磁気シールド板単
位はスペーサを介して一体にし、前記スペーサに
より各磁気シールド板単位間に形成されたギヤツ
プ部に、磁気シールド板の幅方向の少なくとも一
方の側面部を支承する上方へ折り曲げられた折曲
部を有する保持バーを一体に備えた保持ボルトを
貫通させ、保持ボルトに螺合する保持ナツトによ
り保持バーの上方に位置する前記磁気シールド板
を前記鉄心締付金具に締付けて保持したことを特
徴とする。
In order to achieve this object, the present invention divides the upper magnetic shield plate into a plurality of units in its width direction, and integrates each divided magnetic shield plate unit through a spacer. A retaining bolt integrally provided with a retaining bar having an upwardly bent bent portion that supports at least one side surface in the width direction of the magnetic shield plate is passed through the gap formed between each magnetic shield plate unit. The magnetic shield plate located above the holding bar is held by being fastened to the iron core fastening fitting by a holding nut screwed onto a holding bolt.
以下、本発明の実施例を第４図ないし第６図に
よつて詳細に説明する。
Embodiments of the present invention will be described in detail below with reference to FIGS. 4 to 6.
第４図は本発明による磁気シールド板８の一実
施例を示す要部拡大図であり、また第５図は上部
鉄心締付金具６に磁気シールド板８を取付けた場
合の変圧器の縦断面の要部拡大図である。磁気シ
ールド板８は従来構成の巻線押しボルトに対応す
る位置で第４図に示すように、例えば２分割され
ており、分割された各磁気シールド板単位８Ａ，
８Ｂは硅素鋼板を所要枚数だけ積層して形成さ
れ、その外側は絶縁物１０で被覆して構成され
る。また分割された各磁気シールド板単位８Ａ，
８Ｂ間のギヤツプ部では、巻線から流出する絶縁
油により効果的に冷却できるようにするための冷
却流路１６と、各磁気シールド板単位８Ａ，８Ｂ
の両者を強固に固定するためのスペーサ１５とが
設けられ、両磁気シールド板単位８Ａ，８Ｂは熱
硬化性樹脂テープ１４で巻線の半径方向に締付け
て一体化してある。なお前記スペーサ１５および
熱硬化性樹脂テープ１４は、第４図に示すように
磁気シールド板８の長さ方向全域に対して前記冷
却流路１６を避けて複数個所設けられている。ま
た前記スペーサ１５は熱収縮が少なく機械的強度
の大きい例えばベークライト製のものが適してい
る。前記磁気シールド板８を鉄心締付金具６に取
付けるには、第５図に示すように各磁気シールド
板単位８Ａ，８Ｂ間のギヤツプ、すなわち冷却流
路１６を利用して、鉄心締付金具６に螺着されて
いる保持ボルト１７とこの保持ボルト１７に一体
に固着された保持バー１７Ａを介して保持ナツト
１７Ｂにより巻線の軸方向に締付けて固定してあ
る。この保持バー１７Ａは磁気シールド板８の冷
却流路１６を利用して複数個所以上設けられてい
るが、これらの保持部材の材質は漏れ磁束による
うず電流損の発生が僅少な例えばステンレス鋼が
機械的強度の面からも適している。 FIG. 4 is an enlarged view of essential parts showing one embodiment of the magnetic shield plate 8 according to the present invention, and FIG. It is an enlarged view of the main part. The magnetic shield plate 8 is divided into two parts, for example, as shown in FIG.
8B is formed by laminating a required number of silicon steel plates, and the outside thereof is covered with an insulator 10. In addition, each divided magnetic shield plate unit 8A,
In the gap between 8B, there is a cooling channel 16 for effective cooling by insulating oil flowing out from the winding, and each magnetic shield plate unit 8A, 8B.
A spacer 15 is provided to firmly fix both the magnetic shield plate units 8A and 8B, and both magnetic shield plate units 8A and 8B are integrated by tightening them in the radial direction of the windings with a thermosetting resin tape 14. As shown in FIG. 4, the spacers 15 and thermosetting resin tapes 14 are provided at a plurality of locations over the entire longitudinal direction of the magnetic shield plate 8, avoiding the cooling channels 16. Further, the spacer 15 is suitably made of Bakelite, which has little thermal shrinkage and high mechanical strength. To attach the magnetic shield plate 8 to the core clamp 6, as shown in FIG. The winding is fixed by being tightened in the axial direction by a holding nut 17B via a holding bolt 17 screwed into the holding bolt 17 and a holding bar 17A integrally fixed to the holding bolt 17. The holding bars 17A are provided at a plurality of locations using the cooling channels 16 of the magnetic shield plate 8, and the materials used for these holding members are, for example, stainless steel, which causes minimal eddy current loss due to leakage magnetic flux. It is also suitable from the viewpoint of physical strength.
前記した実施例の構成によれば、磁気シールド
板８にこれを鉄心締付金具６に固定するための貫
通穴の加工を施す必要がなく、同時に鉄心締付金
具６側にも多数の取付ボルト穴を不要とすると共
に磁気シールド板８の保持用としての保持ボルト
を省略し、磁気シールド板８をそのギヤツプ１６
を介して巻線半径方向および幅方向に容易に固定
することができる。また巻線から流出する絶縁油
による冷却も容易にできる。 According to the configuration of the embodiment described above, there is no need to process through holes in the magnetic shield plate 8 for fixing it to the core clamping bracket 6, and at the same time, there is no need to process a large number of mounting bolts on the core clamping bracket 6 side. This eliminates the need for holes and the need for retaining bolts for holding the magnetic shield plate 8.
The winding can be easily fixed in the radial and width directions through the winding. In addition, cooling by insulating oil flowing out from the windings can be easily achieved.
また、磁気シールド板８を締付け固定する保持
バー１７Ａの一端を磁気シールド板単位８Ｂの側
面に沿つて延長し折り曲げた構成としているの
で、磁気シールド板８が振動によつて落下ること
をより一層確実に防止できる。なお、保持バー１
７Ａは第６図に示すようにその両端を磁気シール
ド板単位８Ａ，８Ｂの側面に沿つて延長し折り曲
げた構成とすることもできる。 Furthermore, since one end of the holding bar 17A for tightening and fixing the magnetic shield plate 8 is extended and bent along the side surface of the magnetic shield plate unit 8B, the magnetic shield plate 8 is further prevented from falling due to vibration. It can definitely be prevented. In addition, holding bar 1
As shown in FIG. 6, 7A may have a structure in which both ends thereof are extended and bent along the sides of magnetic shield plate units 8A and 8B.
このように、保持バー１７Ａの端部を折り曲げ
ることにより、当該保持バー１７Ａの折曲部が巻
線側と対向する磁気シールド板８を覆うようにな
るので、保持バー１７Ａでの電界が一様になり、
磁気シールド板８の端部での電界集中を緩和でき
るようになる。また、保持バー１７Ａと保持ボル
ト１７が一体となつているので、保持ボルト１７
を保持バー１７Ａに固定する必要なく取り付ける
ことができ、磁気シールド板８の保持の確実性
と、磁気シールド板の取り付けの簡便性もより向
上する。 By bending the end of the holding bar 17A in this way, the bent part of the holding bar 17A comes to cover the magnetic shield plate 8 facing the winding side, so that the electric field at the holding bar 17A is uniform. become,
Electric field concentration at the end of the magnetic shield plate 8 can be alleviated. In addition, since the holding bar 17A and the holding bolt 17 are integrated, the holding bolt 17
can be attached to the holding bar 17A without needing to be fixed to the holding bar 17A, and the reliability of holding the magnetic shield plate 8 and the ease of attaching the magnetic shield plate are further improved.
［発明の効果］
これまでの説明で明らかなように、上記のよう
に構成された本発明によれば、保持バーと保持ボ
ルトを一体し、さらに、保持バーの両端部を折り
曲げて磁気シールドを支承するようになつている
ので、鉄心締付金具に上方に位置する磁気シール
ド板を簡便に保持できるようになるとともに、保
持バーの折曲部が巻線側と対向する磁気シールド
板を覆うようになるので、保持バーでの電界が一
様になり、磁気シールド板の縁部での電界集中を
緩和できる。[Effects of the Invention] As is clear from the above description, according to the present invention configured as described above, the holding bar and the holding bolt are integrated, and both ends of the holding bar are bent to form a magnetic shield. Since the magnetic shield plate located above can be easily held by the iron core clamping bracket, the bent part of the holding bar can cover the magnetic shield plate facing the winding side. Therefore, the electric field at the holding bar becomes uniform, and electric field concentration at the edge of the magnetic shield plate can be alleviated.
第１図は従来の変圧器の構成を概略的に示す縦
断面図、第２図は第１図の上部正面図、第３図は
従来の変圧器の上部構成を概略的に示す縦断面
図、第４図は本発明の変圧器に用いる磁気シール
ド板の一実施例を示す斜視図、第５図は本発明に
よる変圧器の上部構成の一実施例を示す縦断面
図、第６図は他の実施例を示す縦断面図である。
１，２……変圧器巻線、３……鉄心脚、４，５
……継鉄、６，７……鉄心締付金具、８，９……
磁気シールド板、８Ａ，８Ｂ……磁気シールド板
単位、１２……巻線押しボルト、１４……熱硬化
性樹脂テープ、１５……スペーサ、１７……保持
ボルト、１７Ａ……保持バー、１７Ｂ……保持ナ
ツト。
Fig. 1 is a vertical cross-sectional view schematically showing the structure of a conventional transformer, Fig. 2 is a front view of the upper part of Fig. 1, and Fig. 3 is a longitudinal cross-sectional view schematically showing the upper structure of a conventional transformer. , FIG. 4 is a perspective view showing an embodiment of the magnetic shield plate used in the transformer of the present invention, FIG. 5 is a longitudinal sectional view showing an embodiment of the upper structure of the transformer according to the present invention, and FIG. It is a longitudinal cross-sectional view which shows another Example. 1, 2...Transformer winding, 3...Iron core leg, 4, 5
...Yoke, 6, 7...Iron core tightening fittings, 8, 9...
Magnetic shield plate, 8A, 8B... Magnetic shield plate unit, 12... Winding push bolt, 14... Thermosetting resin tape, 15... Spacer, 17... Holding bolt, 17A... Holding bar, 17B... …Keep nuts.
Claims (1)
し、前記巻線および前記継鉄を上下に締付けるた
めの鉄心締付金具を設け、前記巻線の端部と前記
鉄心締付金具との間にこの鉄心締付金具の長手方
向に沿つて強磁性体製の磁気シールド板を配置し
たものにおいて、上方に位置する前記磁気シール
ド板のその幅方向に複数個の単位に分割し、これ
ら分割された各磁気シールド板単位をスペーサを
介して一体にし、前記スペーサにより各磁気シー
ルド板単位間に形成されたギヤツプ部に、磁気シ
ールド板の幅方向の少なくとも一方の側面部を支
承する上方へ折り曲げられた折曲部を有する保持
バーを一体に備えた保持ボルトを貫通させ、保持
ボルトに螺合する保持ナツトにより保持バーの上
方に位置する前記磁気シールド板を前記鉄心締付
金具に締付け保持したことを特徴とする変圧器。1 A winding is arranged around a core leg with yokes provided at both ends, and a core tightening fitting is provided for vertically tightening the winding and the yoke, and the ends of the winding and the core are tightened. A magnetic shield plate made of ferromagnetic material is arranged along the longitudinal direction of this iron core fastening metal between the metal fittings, and the magnetic shield plate located above is divided into a plurality of units in the width direction. , these divided magnetic shield plate units are integrated via a spacer, and at least one side surface in the width direction of the magnetic shield plate is supported in a gap portion formed between each magnetic shield plate unit by the spacer. A holding bolt integrally provided with a holding bar having a bent portion bent upward is passed through, and a holding nut screwed into the holding bolt connects the magnetic shield plate located above the holding bar to the core fastening fitting. A transformer characterized by being tightened and held.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58233533A JPS60126806A (en) | 1983-12-13 | 1983-12-13 | Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58233533A JPS60126806A (en) | 1983-12-13 | 1983-12-13 | Transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60126806A JPS60126806A (en) | 1985-07-06 |
| JPH0552650B2 true JPH0552650B2 (en) | 1993-08-06 |
Family
ID=16956533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58233533A Granted JPS60126806A (en) | 1983-12-13 | 1983-12-13 | Transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60126806A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10483033B2 (en) | 2016-12-22 | 2019-11-19 | Fanuc Corporation | Electromagnetic device |
| US10896778B2 (en) | 2016-12-22 | 2021-01-19 | Fanuc Corporation | Transformer including gaps |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63165829U (en) * | 1987-04-16 | 1988-10-28 | ||
| JPS63165830U (en) * | 1987-04-16 | 1988-10-28 | ||
| JP5861814B2 (en) * | 2011-07-11 | 2016-02-16 | 富士電機株式会社 | DC bias magnetism detecting device and DC magnetism suppression method for transformer |
| JP6158579B2 (en) * | 2013-04-26 | 2017-07-05 | 株式会社日立製作所 | Static induction machine |
| CN104752020A (en) * | 2014-07-25 | 2015-07-01 | 周红玉 | Insulation type electric reactor partition plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241823A (en) * | 1975-09-29 | 1977-03-31 | Hitachi Ltd | Fixing device for magnetic shield |
| JPS571208A (en) * | 1980-06-04 | 1982-01-06 | Hitachi Ltd | Transformer |
| JPS577106A (en) * | 1980-06-16 | 1982-01-14 | Hitachi Ltd | Stationary induction electric device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54159062U (en) * | 1978-04-28 | 1979-11-06 |
-
1983
- 1983-12-13 JP JP58233533A patent/JPS60126806A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241823A (en) * | 1975-09-29 | 1977-03-31 | Hitachi Ltd | Fixing device for magnetic shield |
| JPS571208A (en) * | 1980-06-04 | 1982-01-06 | Hitachi Ltd | Transformer |
| JPS577106A (en) * | 1980-06-16 | 1982-01-14 | Hitachi Ltd | Stationary induction electric device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10483033B2 (en) | 2016-12-22 | 2019-11-19 | Fanuc Corporation | Electromagnetic device |
| US10896778B2 (en) | 2016-12-22 | 2021-01-19 | Fanuc Corporation | Transformer including gaps |
| US11107624B2 (en) | 2016-12-22 | 2021-08-31 | Fanuc Corporation | Electromagnetic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60126806A (en) | 1985-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0552650B2 (en) | ||
| JP6158579B2 (en) | Static induction machine | |
| JPH0114685B2 (en) | ||
| JPS61224306A (en) | Gapped core type reactor | |
| JPS6313313A (en) | Iron core type reactor with gap | |
| JPH027448Y2 (en) | ||
| JPS62279611A (en) | Transformer core supporting apparatus | |
| JPH085538Y2 (en) | Transformer | |
| JPH0121539Y2 (en) | ||
| JPS5972712A (en) | Magnetic shield plate for core clamp metal fitting | |
| JP2008041929A (en) | Stationary induction electric appliance | |
| JPH1154338A (en) | Transformer | |
| JPS5826504Y2 (en) | Reactor core tightening stud bolt | |
| JPS60249308A (en) | Foil wound transformer | |
| JPH0582722B2 (en) | ||
| JPS6134247B2 (en) | ||
| JPH0537458Y2 (en) | ||
| JPH0215301Y2 (en) | ||
| JPS5856247B2 (en) | Air core reactor with magnetic shield | |
| JP2597558B2 (en) | Iron core type reactor with gear gap | |
| JP3434686B2 (en) | Stacking transformers and fixtures | |
| JPS608618B2 (en) | Power reactor winding fixing device | |
| JPH08124767A (en) | Stationary induction electric apparatus | |
| JPH0974023A (en) | Iron core tightening structure | |
| JPS5932100Y2 (en) | Transformer body tightening device |