JPS5878408A - Transformer - Google Patents
TransformerInfo
- Publication number
- JPS5878408A JPS5878408A JP56177342A JP17734281A JPS5878408A JP S5878408 A JPS5878408 A JP S5878408A JP 56177342 A JP56177342 A JP 56177342A JP 17734281 A JP17734281 A JP 17734281A JP S5878408 A JPS5878408 A JP S5878408A
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- clamp ring
- insulator
- transformer
- high voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は変圧器に係シ、特に高圧巻線のクランプリング
と鉄心の継鉄(以下継鉄と称する)との間に端部絶縁物
を有する変圧器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transformer, and particularly to a transformer having an end insulator between a clamp ring of a high voltage winding and a yoke of an iron core (hereinafter referred to as a yoke). be.
変圧器の従来例が第1図及び第2図に示されている。同
図に示されているように変圧器は一般に、鉄心1の脚部
IAに少なくとも低圧巻線2、高圧巻線3が同心的に巻
回して形成され、この巻回された低、高圧巻線2,3の
両端には夫々絶縁被覆されたクランプリング4.5が配
置されている。Conventional examples of transformers are shown in FIGS. 1 and 2. As shown in the figure, a transformer is generally formed by concentrically winding at least a low voltage winding 2 and a high voltage winding 3 around a leg IA of an iron core 1. Insulated clamp rings 4.5 are arranged at both ends of the wires 2, 3, respectively.
これら低、高圧巻@2.3と鉄心1の脚部IAとの間及
び低、高圧巻線2.3間は絶縁筒11゜12を介して、
高圧巻線3のクランプリング5と継鉄IBとの間は端部
絶縁物6aを介して夫々絶縁されているが、このうち高
圧巻線3と低圧巻線2との間及び高圧巻線3と鉄心1と
の間には、絶縁筒12A、12B、12C,IIA、1
1Bが夫々配置されている。そして高圧巻線3のクラン
プリング5、すなわち導体7を油浸紙8で絶縁して形成
したクランプリング5と継鉄IBとの間には、油ダクト
9A、9B、9C,9Dと油浸紙バリヤIOA、10B
、I OC,10Dとが夫々交互に配置されている。こ
のように形成された変圧器は変圧器油13の中で使用さ
れる。しかしクランプリング5と継鉄IBとの間の端部
絶縁長りの大小を決定ずけるクランプリング5と継鉄I
Bとの間の電位分布を、高圧巻線3の電位を100%(
クランプリング5の電位も同じ<ioo%]とし、継鉄
IBの電位を0%として、90,80゜70.60及び
50%の各等電位線を点線で示すと、その電位分布はク
ランプリング5近傍に集中しており、とシわけクランプ
リング5と油浸紙バリヤIOAとの間の油隙電界が最も
大きかった。Between these low and high voltage windings @2.3 and the leg IA of the iron core 1, and between the low and high voltage windings 2.3, there are insulating cylinders 11 and 12.
The clamp ring 5 of the high-voltage winding 3 and the yoke IB are insulated via the end insulator 6a, and between the high-voltage winding 3 and the low-voltage winding 2 and the high-voltage winding 3 Insulating cylinders 12A, 12B, 12C, IIA, 1
1B are arranged respectively. Between the clamp ring 5 of the high voltage winding 3, that is, the clamp ring 5 formed by insulating the conductor 7 with oil-impregnated paper 8, and the yoke IB, there are oil ducts 9A, 9B, 9C, 9D and oil-impregnated paper. Barrier IOA, 10B
, IOC, and 10D are arranged alternately. The transformer thus formed is used in transformer oil 13. However, the clamp ring 5 and the yoke I determine the length of the end insulation between the clamp ring 5 and the yoke IB.
B, the potential distribution between high voltage winding 3 and 100% (
If the potential of the clamp ring 5 is also the same <ioo%], and the potential of the yoke IB is 0%, and the equipotential lines at 90, 80°, 70.60, and 50% are shown as dotted lines, the potential distribution is the same as that of the clamp ring. The electric field in the oil gap between the separation clamp ring 5 and the oil-immersed paper barrier IOA was the largest.
このため従来は端部絶縁長りを小さくして変圧器゛を小
形化することが困離であった。なお第1図のPは高圧巻
線3の端部絶縁が構成される部分である。For this reason, it has conventionally been difficult to downsize the transformer by reducing the length of the end insulation. Note that P in FIG. 1 is a portion where the end insulation of the high voltage winding 3 is constructed.
本発明は以上の点に鑑みなされたものであシ、その目的
とするところは、端部絶縁長を縮小して小形化が可能な
変圧器を提供するにある。The present invention has been made in view of the above points, and an object thereof is to provide a transformer that can be downsized by reducing the insulation length of the end portions.
すなわ−ち本発明は、高圧巻線のクランプリングと継鉄
との間に配置する端部絶縁物が、少なくとも2つの絶縁
体単位から形成され、かつ絶縁体単位はクランプリング
側から継鉄側にゆくに従って誘電率が小さいものである
ことを特徴とするものである。That is, in the present invention, the end insulator disposed between the clamp ring and the yoke of the high-voltage winding is formed from at least two insulator units, and the insulator unit is connected to the yoke from the clamp ring side. It is characterized by a dielectric constant that decreases as it goes to the side.
以下、図示した実施例に基づいて本発明を説明する。第
3図には本発明の一実施例が示されている。なお従来と
同じ部品には同じ符号を付したので説明は省略する。本
実施例では高圧巻線3のクランプリング5と継鉄IBと
の間に配置する端部絶縁物6bが、少なくとも2つの絶
縁体単位15゜16及び17から形成され、かつ絶縁体
単位15゜16.17は、クランプリング5側から継鉄
IB側にゆくに従って誘電率εが小さくなるようにした
。ここでクランプリング5の絶縁物14はフイラ入すエ
ボキシ樹脂で、その誘電率e1が5.5となるようにし
た。すなわち絶縁体単位15をフイラ入ジェポキシ樹脂
で、絶縁体単位16を油浸紙で、絶縁体単位17を変圧
器油で形成した。このようにすることにより、フイラ入
ジェポキシ樹脂の誘電率は4.4<、フ、イラ入ジェポ
キシ樹脂の誘電率はアルミナ等のフィシの配合量を変え
ることによ、9.3.5から9.0の範囲にすることが
できる)、油浸紙の誘電率は3.5、変圧器油の誘電率
は2.2なので、絶縁体単位15の誘電率ε2は4.4
、絶縁体単位16の誘電率ε3は3.5、絶縁体単位1
7の誘電率ε4は2.2となって、夛ランプリング5と
継鉄IBとの間の端部絶縁物6bは、その誘電率がε2
〉ε3〉6番と継鉄IB側になるほど小さくなる。なお
りランプリング5の絶縁物14の誘電率りと絶縁体単位
15の誘電率ε、とでは、上述のように61が5.5な
のでε□が大きく6.〉ε2にしである。The present invention will be explained below based on the illustrated embodiments. FIG. 3 shows an embodiment of the invention. Note that parts that are the same as those in the conventional model are given the same reference numerals, and therefore their explanations will be omitted. In this embodiment, the end insulator 6b disposed between the clamp ring 5 of the high voltage winding 3 and the yoke IB is formed of at least two insulator units 15° 16 and 17, and the insulator unit 15° 16.17, the dielectric constant ε is made smaller as it goes from the clamp ring 5 side to the yoke IB side. Here, the insulator 14 of the clamp ring 5 is made of epoxy resin filled with filler, and its dielectric constant e1 is set to 5.5. That is, the insulator unit 15 was formed of filled jepoxy resin, the insulator unit 16 was formed of oil-impregnated paper, and the insulator unit 17 was formed of transformer oil. By doing this, the dielectric constant of the filled epoxy resin is 4.4<, and the dielectric constant of the filled epoxy resin is 9.3.5 to 9 by changing the amount of filler such as alumina. Since the dielectric constant of oil-impregnated paper is 3.5 and the dielectric constant of transformer oil is 2.2, the dielectric constant ε2 of the insulator unit 15 is 4.4.
, dielectric constant ε3 of insulator unit 16 is 3.5, insulator unit 1
7 has a dielectric constant ε4 of 2.2, and the end insulator 6b between the ramp ring 5 and the yoke IB has a dielectric constant ε2.
〉ε3〉The closer it is to No. 6 and the yoke IB, the smaller it becomes. Between the permittivity of the insulator 14 of the lamp ring 5 and the permittivity ε of the insulator unit 15, 61 is 5.5 as described above, so ε□ is large 6. 〉ε2.
このようにクランプリング5側から継鉄IB側にゆくに
従って誘電率が小さくなるようにしたので、クランプリ
ング5と継鉄IBとの間の電位分布は、同図に点線で示
しである90.80,70゜60及び50%の等電位線
のように、クランプリング5と継鉄IBとの間に比較的
平等に、従来例に比へると継鉄IB側に吸引されて分布
するようになシ、クランプリング5と継鉄IBとの間の
端部絶縁長L’に従来よシも縮小することができる。In this way, the dielectric constant is made smaller as it goes from the clamp ring 5 side to the yoke IB side, so the potential distribution between the clamp ring 5 and the yoke IB is 90. Like the equipotential lines of 80, 70°, 60, and 50%, the lines are relatively evenly distributed between the clamp ring 5 and the yoke IB, and are attracted and distributed toward the yoke IB compared to the conventional example. However, the end insulation length L' between the clamp ring 5 and the yoke IB can be reduced compared to the conventional method.
なお本実柳例では端部絶縁物6bを3つの絶縁体単位1
5,16.17で形成したが、その誘電率を適切に選択
すれば2つの絶縁体単位で構成しても同様な作用効果を
奏すると・とができる。In addition, in this example, the end insulator 6b is made up of three insulator units 1.
5, 16, and 17, but if the dielectric constant is appropriately selected, the same operation and effect can be obtained even if the insulator is composed of two insulator units.
第4図には本発明の他の実施例が示されている。Another embodiment of the invention is shown in FIG.
本実施例では端部絶縁物6Cを絶縁体単位18゜19.
17から形成し、絶縁体単位18.19をクランプリン
グ5から継鉄IBに向うほど幅狭となるような傾斜を設
けて形成した。このようにすることによシ、クランプリ
ング5の曲げRを大きくしたようになって、クランプリ
ング5端部の油中電界を緩和することができるようにな
る。なお絶縁体単位18,19.17の誘電率’6s
ε5゜ε4が前述の場合と同様継鉄IB側になるほど
小さく、g、)g、)g、であることは言を俟たない。In this embodiment, the end insulator 6C is insulator unit 18°19.
17, and insulator units 18 and 19 were formed with an inclination such that the width becomes narrower from the clamp ring 5 toward the yoke IB. By doing so, the bending radius of the clamp ring 5 is increased, and the electric field in the oil at the end of the clamp ring 5 can be alleviated. In addition, the permittivity of insulator unit 18, 19.17 '6s
It goes without saying that ε5°ε4 is smaller as it approaches the yoke IB, g, )g, )g, as in the case described above.
第5図には本発明のさらに他の実施例が示されている。FIG. 5 shows yet another embodiment of the invention.
本実施例では高圧巻線3とクランプリング5との間の距
離りを大きくした。このようにすることによ)高圧巻線
3内の変圧器油13の流れがよくなって、高圧巻線3の
冷却をよくすることができ、高圧巻Is3の冷却効果の
向上が要求されるものにも上述の端部絶縁構成が何等支
障なく適用することができる。In this embodiment, the distance between the high voltage winding 3 and the clamp ring 5 is increased. By doing this, the flow of the transformer oil 13 in the high voltage winding 3 is improved, the high voltage winding 3 can be cooled better, and the cooling effect of the high voltage winding Is3 is required to be improved. The above-described end insulation configuration can also be applied to the above-described materials without any problems.
上述のように本発明は、高圧巻線のクランプリングと継
鉄との間に介在される絶縁体単位の誘電率が、継鉄側に
ゆくに従って小さくなるようにしたので、り2ンプリン
グと継鉄との間の電位分布がよくなって、クラ/プリン
グと継鉄との間の端゛部絶縁長を縮小することができる
ようになシ、端部絶縁長を縮小して小形化が可能な変圧
器を得ることができる。As described above, in the present invention, the dielectric constant of the insulator interposed between the clamp ring of the high-voltage winding and the yoke decreases as it goes toward the yoke. The potential distribution between the steel and the iron is improved, and the end insulation length between the clamp/pull and the yoke can be reduced, making it possible to reduce the end insulation length and downsize. You can get a suitable transformer.
第1図は従来の変圧器の縦断側面図、第2図は従来の変
圧器の変圧器要部の断面図、第3図は本発明の変圧器の
一実施例の変圧器要部の断面図、第4図は本発明の変圧
器の他の実施例の変圧器要部の断面図゛、第5図は本発
明の変圧器のさらに他の実施例の変圧器要部の断面図で
ある。
1゛°°鉄心・ 1A′°°鉄心″豐部・1ト°鉄心0
継鉄・2・・・低圧巻線、3・・・高圧巻線、4.5・
・・クランプリング、6b、6C・・・端部絶縁物、1
51・・16゜17.18.19・・・絶縁体単位。
第 1 図
第 5 図FIG. 1 is a longitudinal side view of a conventional transformer, FIG. 2 is a cross-sectional view of the main parts of the conventional transformer, and FIG. 3 is a cross-section of the main parts of the transformer of an embodiment of the present invention. 4 is a cross-sectional view of the main parts of a transformer according to another embodiment of the transformer of the present invention, and FIG. 5 is a cross-sectional view of the main parts of a transformer according to still another embodiment of the transformer according to the present invention. be. 1゛°° core・1A′°° core・1° core 0
Yoke・2...Low voltage winding, 3...High voltage winding, 4.5・
... Clamp ring, 6b, 6C ... End insulator, 1
51...16°17.18.19...Insulator unit. Figure 1 Figure 5
Claims (1)
巻回し、前記各巻組の両端に夫々絶縁被覆されたクラン
プリングを配置し、少なくとも前記高圧巻線の前記クラ
ンプリングと前記鉄心の継鉄との間に端部絶縁物を介在
させるものにおいて、前記高圧巻線の前記クランプリン
グと前記鉄心の継鉄との間に配置する端部絶縁物が、少
なくとも2つの絶縁体単位から形成され、かつ前記絶縁
体単位は前記クランプリング側から前記継鉄側にゆくに
従って誘電率が小さいものであることを特徴とする変圧
器。1. At least low-voltage and high-voltage windings are concentrically wound around the legs of the iron core, and clamp rings coated with insulation are arranged at both ends of each set of windings, so that at least the clamp rings of the high-voltage windings and the iron core In the device in which an end insulator is interposed between the yoke and the yoke, the end insulator disposed between the clamp ring of the high voltage winding and the yoke of the iron core is formed from at least two insulator units. and the insulator unit has a dielectric constant that decreases from the clamp ring side to the yoke side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56177342A JPS5878408A (en) | 1981-11-04 | 1981-11-04 | Transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56177342A JPS5878408A (en) | 1981-11-04 | 1981-11-04 | Transformer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5878408A true JPS5878408A (en) | 1983-05-12 |
JPH0359567B2 JPH0359567B2 (en) | 1991-09-11 |
Family
ID=16029283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56177342A Granted JPS5878408A (en) | 1981-11-04 | 1981-11-04 | Transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5878408A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61259513A (en) * | 1985-05-14 | 1986-11-17 | Mitsubishi Electric Corp | Gas-insulated electric device |
JPS62144307A (en) * | 1985-12-19 | 1987-06-27 | Hitachi Ltd | Oil immersed induction machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5639142A (en) * | 1980-07-07 | 1981-04-14 | Hitachi Chem Co Ltd | Production of mold |
-
1981
- 1981-11-04 JP JP56177342A patent/JPS5878408A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5639142A (en) * | 1980-07-07 | 1981-04-14 | Hitachi Chem Co Ltd | Production of mold |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61259513A (en) * | 1985-05-14 | 1986-11-17 | Mitsubishi Electric Corp | Gas-insulated electric device |
JPH044729B2 (en) * | 1985-05-14 | 1992-01-29 | ||
JPS62144307A (en) * | 1985-12-19 | 1987-06-27 | Hitachi Ltd | Oil immersed induction machine |
JPH0719704B2 (en) * | 1985-12-19 | 1995-03-06 | 株式会社日立製作所 | Oil-filled induction device |
Also Published As
Publication number | Publication date |
---|---|
JPH0359567B2 (en) | 1991-09-11 |
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