JPS61234511A - Winding of transformer - Google Patents

Abstract

PURPOSE:To facilitate the most economical design of a transformer by enabling the selection of number of times of winding of the linear winding composed of two rows of divided windings by a method wherein the divided windings have the winding start ends in the opposite positions mutually regarding the center in radial direction and are connected in series in the end parts on the opposite side to the end parts connected to the line leads regarding the center in radial direction. CONSTITUTION:The linear conductors 5a and 5b divided into the upper and lower are started winding around an insulating material 4 from the positions slipped from each other by 180. The winding of necessary times is done in a manner the winding start ends and the finish ends of them are located in the opposite side to each other regarding the center of radial direction, thereby composing the upper and lower, 2 pieces divided windings 2a and 2b. The line leads 7a and 7b are led from the winding start end of the upper winding 2a and the winding finish end of the lower wining 2b respectively. The winding finish end of the upper winding 2a is connected to the winding start end of the lower winding 2b through an intermediate connection conductor 8 so as to connect the divided windings 2a and 2b in series, which is used as a secondary winding and is combined with the primary winding 3 to compose a transformer winding.

Description

【発明の詳細な説明】 〔発明の利用分野〕　本発明は条溝体を用いた変圧器巻
線に係り、特に上下２列に分割して巻かれた条溝体から
なる分割巻線を中間接続用導体により直列接続して構成
される変圧器巻線に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a transformer winding using grooved bodies, and in particular, the present invention relates to a transformer winding using grooved bodies, and in particular, a divided winding consisting of grooved bodies wound in two rows, upper and lower. The present invention relates to transformer windings connected in series by connecting conductors.

〔発明の背景〕　従来、この種の変圧器巻線としては第
２図、第４図および第９図に示すようなものがある。[Background of the Invention] Conventionally, there are transformer windings of this type as shown in FIGS. 2, 4, and 9.

図中、１は鉄心、２ａ、２ｂは二次巻線を構成する上下
２個の分割巻線、３は一次巻線、４は鉄心、巻線間の絶
縁材、５ａ、５ｂは上下２列に分割して巻かれ分割巻線
２ａ、２ｂを構成する条溝体、６は層間絶縁材、７ａは
上下分割巻線２ａ１２ｂのうち、上側巻線２ａの巻始め
端に接続されたライン口出線、７ｂは同じく下側巻線２
ｂの巻終り端に接続されたライン口出線、８は分割巻線
２ａ、２ｂが直列になるように上側巻線２ａの巻終り端
と下側巻線２ｂの巻始め端とを接続する中間接続用導体
である。In the figure, 1 is the iron core, 2a and 2b are the upper and lower two divided windings that make up the secondary winding, 3 is the primary winding, 4 is the iron core, insulation between the windings, and 5a and 5b are the upper and lower two rows. 6 is an interlayer insulating material, and 7a is a line outlet connected to the winding start end of the upper winding 2a of the upper and lower divided windings 2a12b. The wire 7b is also the lower winding 2
A line lead wire 8 is connected to the winding end of b, and 8 connects the winding end of the upper winding 2a and the winding start end of the lower winding 2b so that the divided windings 2a and 2b are in series. It is a conductor for intermediate connection.

このような、２列分割巻線からなる条巻線は、上下２列
の条溝体５ａ、５ｂを一連の層間絶縁材６と共に同時に
巻回できるので、単一条溝体を用いた通常の条巻線に比
べ、同一巻回数の巻線を得るのに必要な巻線機の回転回
数が１／２ですみ、また層間絶縁材６の長さも１／２と
なり、製造コストを低減できるという利点を有している
が、第２．４図に示すように上下の分割巻線２ａ、２ｂ
は、それぞれの巻始め端と巻終り端とが径方向の中心に
対して同一側に位置するように、つまり各分割巻線の巻
回数が整数となるように巻かれているため、この２列分
割巻線からなる条巻線の全体の巻回数は偶数でしか選択
できなかった。Such a strip winding consisting of two rows of divided windings can simultaneously wind the upper and lower two rows of strips 5a and 5b together with a series of interlayer insulating materials 6, so it is different from a normal strip using a single strip. Compared to wire winding, the number of rotations of the winding machine required to obtain the same number of turns is halved, and the length of the interlayer insulation material 6 is also halved, reducing manufacturing costs. However, as shown in Fig. 2.4, the upper and lower divided windings 2a, 2b
is wound so that each winding start end and winding end end are located on the same side with respect to the center in the radial direction, that is, the number of turns of each divided winding is an integer. Only an even number of turns could be selected for the total number of turns of the strip winding consisting of the row-divided winding.

一般的に変圧器本体の価格は鉄心価格と巻線価格の和に
よって決まるので、設計に際しては、鉄心材料と巻線導
体の単価を勘案して、鉄心材料の単価が高いときＫは導
体使用量をふやし鉄心材料の使用量を減らして、いわゆ
るカッパーマシンとし、逆に巻線導体の単価が高いとき
には鉄心材料の使用量をふやし導体使用量を減らして、
いわゆるコアーマシンとすることにより、与えられた仕
様を満足する範囲で本体価格が最も安価となる最経済設
計を図っているが、このためには巻線の巻回数を自由に
選択できることが必要で、特に巻回数が数十ターン程度
の二次巻線に条巻線を用いる場合、巻回数を２ターンご
との偶数でしか選択できないと、設計の自由度が制限さ
れ、最経済設計が困難になる。Generally, the price of the transformer body is determined by the sum of the core price and the winding price, so when designing, take into account the unit price of the core material and the winding conductor.When the unit price of the core material is high, K is the amount of conductor used. Increasing the amount of iron core material used and reducing the amount of iron core material used, creating a so-called copper machine, and conversely, when the unit price of the winding conductor is high, increasing the amount of iron core material used and reducing the amount of conductor used,
By making it a so-called core machine, we aim to achieve the most economical design with the lowest unit price within the range that satisfies the given specifications, but for this purpose, it is necessary to be able to freely select the number of turns of the winding wire. In particular, when using a strip winding for the secondary winding with a number of turns of several tens of turns, if the number of turns can only be selected as an even number every two turns, the degree of freedom in design will be limited and it will be difficult to achieve the most economical design. .

また、第２．４図に示す２列分割巻線からなる条巻線は
、ライン口出線７ａ、７ｂと中間接続用導体８とが径方
向の中心に対して同一側から引き出されているため、第
９図に示すように巻線が一方の側に大きく膨らみ、長径
方向における一方の側の巻線の積厚をａ、他方の側の巻
線の積厚をｂ、巻線内径を２ｄとすると、ａ　＋　ｄ　
＞　ｂ　＋　ｄの非対称形となる。通常、変圧器本体は
、鉄心がタンクの中央に位置するように配置されるので
、上記のように巻線形状が非対称形であった場合、巻線
とタンク側壁との間隔が巻線の膨らみの大きい側では狭
く、膨らみの小さい側では広くなり、巻線とタンク側壁
との間に絶縁の確保および本体吊上げ時における巻線と
タンクとの接触防止のため最少限必要な間隔をあけよう
とすると、タンク寸法が太き（なるのを免れないという
不利な点もあった。Furthermore, in the strip winding consisting of the two-row divided winding shown in Fig. 2.4, the line lead wires 7a, 7b and the intermediate connection conductor 8 are drawn out from the same side with respect to the center in the radial direction. Therefore, as shown in Fig. 9, the winding swells greatly on one side, and the stacking thickness of the winding on one side in the major diameter direction is a, the stacking thickness of the winding on the other side is b, and the inner diameter of the winding is 2d, a + d
> b + d becomes an asymmetric form. Normally, the main body of a transformer is arranged so that the iron core is located in the center of the tank, so if the winding shape is asymmetrical as shown above, the distance between the winding and the tank side wall will be larger than the bulge of the winding. It is narrower on the side with a larger bulge and wider on the side with a smaller bulge, in order to provide the minimum necessary distance between the winding and the tank side wall to ensure insulation and prevent contact between the winding and the tank when lifting the main body. However, there was also the disadvantage that the tank size was unavoidable.

〔発明の目的〕　本発明の目的は、２列分割巻線からな
る条巻線の巻回数を奇数にも選択できるようにすること
により、変圧器の最経済設計がしやすく、かつ巻線形状
をタンクへの収納に適した対称形となし得る変圧器巻線
を提供することにある。[Object of the Invention] An object of the present invention is to facilitate the most economical design of a transformer and to improve the winding shape by making it possible to select an odd number of turns of a strip winding consisting of a two-row split winding. The object of the present invention is to provide a transformer winding that can be formed into a symmetrical shape suitable for storage in a tank.

〔発明の概要〕　本発明は、上下２列に分割して巻かれ
た条溝体からなる分割巻線を中間接続用導体により直列
接続して構成した変圧器巻線において、各分割巻線は、
径方向の中心に対して互に反対側の位置に巻始め端を有
し、かつ径方向の中心に対してライン口出線に接続され
た端部とは反対側の端部で直列接続されていることを特
徴とするものである。[Summary of the Invention] The present invention provides a transformer winding constructed by connecting divided windings made of grooves and grooves divided into two rows, upper and lower, in series through an intermediate connection conductor, in which each divided winding is ,
The winding start ends are located at positions opposite to each other with respect to the radial center, and the winding start ends are connected in series at the end opposite to the end connected to the line outlet wire with respect to the radial center. It is characterized by the fact that

〔発明の実施例〕　以下、本発明の一実施例を第１図、
第５図により説明する。[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIG.
This will be explained with reference to FIG.

本実施例では、上下２分割した条溝体５ａ、５ｂを鉄心
１と巻線とを絶縁する絶縁材４上に互に１８０度ずらし
た位置から巻き始め、それぞれの巻始め端と巻終り端と
が径方向の中心に対して互に反対側に位置するように必
要回数巻回して上下２個の分割巻線２ａ、２ｂを構成す
る。そして、上側巻線２ａの巻始め端と下側巻線２ｂの
巻終り端とからそれぞれライン口出線７ａ、７ｂを出し
、分割巻線２ａ、２ｂが直列になるように上側巻線２ａ
の巻終り端と下側巻線２ｂの巻始め端とを中間接続用導
体８により接続したものを二次巻線とし、これと−次巻
線３とを組合わせて変圧器巻線を構成している。In this embodiment, the groove bodies 5a and 5b, which are divided into upper and lower halves, are wound on the insulating material 4 that insulates the iron core 1 and the winding from positions shifted by 180 degrees from each other, and the winding start end and the winding end end are respectively The windings are wound a necessary number of times so that the two windings are located on opposite sides of the radial center to form two upper and lower divided windings 2a and 2b. Line lead wires 7a and 7b are taken out from the winding start end of the upper winding 2a and the winding end of the lower winding 2b, respectively, and the upper winding 2a is connected so that the divided windings 2a and 2b are in series.
The end of the winding 2b and the beginning of the winding of the lower winding 2b are connected by an intermediate connection conductor 8 to form a secondary winding, and this and the secondary winding 3 are combined to form a transformer winding. are doing.

本実施例によれば、各分割巻線２ａ、２ｂがそれぞれ１
／２ターンの端数ターンを有し、径方向の中心に対して
ライン口出線７ａ、７ｂに接続された端部とは反対側に
位置する端部で直列接続されているので、この２列分割
巻線からなる条巻線の全体としての巻回数が奇数となる
ことは明らかである。According to this embodiment, each divided winding 2a, 2b has 1
/2 turns, and are connected in series at the end located on the opposite side of the radial center from the end connected to the line outlet wires 7a, 7b, so these two rows It is clear that the total number of turns of the strip winding composed of the divided windings is an odd number.

したがって、この奇数巻コイルと第２．４図に示す偶数
巻コイルのいずれの巻線様式をとるかにより２列分割巻
線からなる条巻線の巻回数を１ターンごとに選択するこ
とが可能となる。Therefore, it is possible to select the number of turns of the strip winding consisting of the two-row divided winding for each turn depending on the winding style of the odd-numbered coil or the even-numbered coil shown in Figure 2.4. becomes.

たとえ各分割巻線２ａ、２ｂの巻始め端と巻終り端とが
径方向の中心に対して互に反対側に位置していても、普
通のように各分割巻線２ａ、２ｂの巻始め端の位置を同
一側とした場合には、上側巻線２ａの巻終り端と下側巻
７ｉ１２ｂの巻始め端とが径方向の中心に対して互に反
対側に位置するため、中間接続用導体８を鉄心１を迂回
して配設しなければならなくなり、この迂回した中間接
続用導体８が１／２タ一ン分の巻線導体となって、本実
施例のような奇数巻コイルは得られない。Even if the winding start end and winding end of each divided winding 2a, 2b are located on opposite sides of the radial center, the winding start end of each divided winding 2a, 2b is If the ends are located on the same side, the winding end of the upper winding 2a and the winding start end of the lower winding 7i12b are located on opposite sides with respect to the center in the radial direction. The conductor 8 has to be placed around the iron core 1, and this bypassed intermediate connection conductor 8 becomes a winding conductor for 1/2 tan, and an odd number of windings as in this embodiment. cannot be obtained.

第６図、第７図は本発明の他の実施例を示す。FIGS. 6 and 7 show other embodiments of the present invention.

第６図の例は分割巻線２ａ％２ｂのライン口出線７ａ、
７ｂと中間接続用導体８の引出し方を第１図とは逆にし
たものであり、第７図の例は中間接続用導体８を分割巻
線２ａ、２ｂの眉間に通して上側巻線２ａの巻終り端と
下側巻線２ｂの巻始め端とを接続したものであって、機
能的には第１図に示したものと変わりがない。また、第
１図、第６図では中間接続用導体８を巻線の上方に引き
出しているが、下方に引き出してもよい。The example in FIG. 6 shows the line lead wire 7a of the divided winding 2a%2b,
7b and the intermediate connecting conductor 8 are drawn out in the opposite way to that shown in FIG. 1. In the example shown in FIG. The winding end of the lower winding 2b is connected to the winding start end of the lower winding 2b, and is functionally the same as that shown in FIG. Further, although the intermediate connection conductor 8 is drawn out above the windings in FIGS. 1 and 6, it may be drawn out downward.

上記各実施例において、上下２列の条溝体５ａ。In each of the above embodiments, there are two rows of upper and lower groove bodies 5a.

５ｂは一連の広幅の眉間絶縁材６と共に同時に巻回され
る。９は上下２列の条溝体５ａ、５ｂのずらした部分を
埋める絶縁スペーサである。5b is simultaneously wound with a series of wide glabellar insulation 6. Reference numeral 9 denotes an insulating spacer that fills the shifted portions of the upper and lower two rows of groove bodies 5a and 5b.

次に、本発明を利用した最経済設計点の求め方を第８図
により説明する。Next, a method for determining the most economical design point using the present invention will be explained with reference to FIG.

ある損失における最経済設計点を求めるに当り、まず同
一巻数の場合を考えると、巻線の高さを変えることによ
り同一巻数での最経済設計点を求めることかできる。す
なわち、巻線導体の断面積を同一とした場合、巻線の高
さを高くすれば、巻線の積厚、したがって外径寸法は小
さくなり、導体の長さが短くなった分だけ導体使用量は
減少する。To find the most economical design point for a certain loss, first consider the case of the same number of turns, then by changing the height of the winding, the most economical design point can be found for the same number of turns. In other words, if the cross-sectional area of the winding conductor is the same, increasing the height of the winding will reduce the stacking thickness of the winding, and therefore the outer diameter, and reduce the amount of conductor used due to the shortened conductor length. quantity decreases.

一方、鉄心について考えると、巻線が巻かれているコア
一部は巻線の高さが高くなるほど長くなり、ある相のコ
ア一部と他の相のコア一部とをつなぐヨーク部の長さは
巻線の積厚が小さくなった分だけ短くなる。一般的な設
計値の範囲では、巻線の高さを高くした場合、ヨーク部
の長さの減少分よりもコア一部の長さの増加分の方が大
きく、鉄心材料の使用量は増加する傾向にある。On the other hand, when considering an iron core, the part of the core around which the winding is wound becomes longer as the height of the winding increases, and the length of the yoke that connects part of the core of one phase and part of the core of another phase becomes longer. The length becomes shorter as the stacked thickness of the windings becomes smaller. Within the range of general design values, when the height of the winding is increased, the increase in the length of the core part is greater than the decrease in the length of the yoke part, and the amount of core material used increases. There is a tendency to

今、巻線高さを低くした設計から巻線高さを高くして行
（と、導体使用量は減少し、鉄心材料の使用量は増加し
て行く。Nowadays, designs with lower winding heights are being changed to higher winding heights (as a result, the amount of conductor used decreases and the amount of iron core material used increases.

変圧器本体の価格Ｃ１は巻線導体の価格と鉄心材料の価
格の和でほぼ決まるので、導体と鉄心材料の単価が与え
られると、ある巻回数Ｎ＝２ｎ（ｎ：整数）で巻線の高
さを低い方から高い方へ変化させるに従って導体使用量
と鉄心材料の使用量が変化し、ある適当な値になった時
にａｔが最も安価となる最経済設計点Ａが求まる。各々
の使用量がどちらか片寄るとＣ１は高（なり、巻線の高
さと本体価格の関係は第８図に示すようなＶカーブを描
（ことになる。The price C1 of the transformer body is almost determined by the sum of the price of the winding conductor and the price of the core material, so if the unit prices of the conductor and core material are given, the number of turns N = 2n (n: integer) As the height is changed from lower to higher, the amount of conductor and core material used changes, and when a certain appropriate value is reached, the most economical design point A at which at is the cheapest is found. If the amount of each used is biased to either side, C1 will become high, and the relationship between the height of the winding and the price of the main unit will draw a V curve as shown in Fig. 8.

次に巻線の巻回数を変え、例えばＮ＝２ｎ＋１とＮ＝２
Ｎ＋２で同様の操作を繰り返すと、それぞれの巻回数で
の最経済設計点Ｂ、Ｃ！（巻回数がふえた分だけそれに
見合う巻線高さは高くなる）が求まる。Next, change the number of turns of the winding, for example, N=2n+1 and N=2
If you repeat the same operation with N+2, the most economical design points B and C for each number of turns! (As the number of turns increases, the corresponding height of the winding increases.) is calculated.

第２．４図に示す従来の２列分割巻の条巻線では、巻回
数が偶数に限られていたため、奇数巻のＢ点が各巻数を
通じての最経済設計点であったとしても、Ａ点と０点し
か求めることができず、設計の自由度が制限されていた
が、本発明によれば従来偶数でしか選択できなかった巻
回数を奇数でも選択できるから、設計の自由度が広がり
、最経済設計点が求めやす（なる。In the conventional two-row split winding wire shown in Figure 2.4, the number of turns is limited to an even number, so even if point B of an odd number of turns is the most economical design point for each number of turns, A It was only possible to obtain points and zero points, which limited the degree of freedom in design.However, according to the present invention, the number of windings that could only be selected with an even number can be selected even with an odd number, increasing the degree of freedom in design. , it is easy to find the most economical design point.

また、巻回数を自由に選べるということはインピーダン
ス電圧、銅損、鉄損などの変圧器の特性の調整を容易に
し、所要の特性を満足しながら本体価格が最も安価とな
る最経済設計点が求めやすいことになる。In addition, the ability to freely select the number of turns makes it easy to adjust transformer characteristics such as impedance voltage, copper loss, and iron loss, and the most economical design point that satisfies the required characteristics while minimizing the main unit price can be found. It will be easy to find.

第１０図は第１図または第６図に示す奇数巻条巻線の外
観図であり、ライン口出線７ａ、７ｂと中間接続用導体
８とを径方向の中心に対して互に反対側の位置から引き
出したことにより、巻線の両側の膨らみ量が同一となり
、巻線形状なａ＋ｄ＝ｂ十ｄの対称形となし得ることを
示している。この結果、鉄心をタンクの中心に配置した
場合、従来のように巻線がタンク側壁に対して片寄るこ
とがなくなり、巻線とタンク側壁との間に所要の間隔を
確保するのに従来よりもタンク寸法を小さくすることが
できる。FIG. 10 is an external view of the odd-numbered winding shown in FIG. 1 or FIG. By pulling out the wire from the position shown in FIG. As a result, when the iron core is placed in the center of the tank, the windings are no longer offset to the tank side wall as in the past, and it is easier to secure the required spacing between the windings and the tank side wall than before. Tank size can be reduced.

なお、第２．４図に示す従来の２列分割巻条巻線では、
中間接続用導体８の電流密度を巻線導体である条溝体５
ａ、５ｂのそれと同程度にとっていたため、巻線の温度
上昇を低減するには巻線層間のオイルダクトを増設する
か、条溝体５ａ、５ｂの電流密度を下げるしかなかった
が、中間接続用導体８の電流密度を条溝体５ａ、５ｂの
電流密度よりも低くとり、中間接続用導体８自身の発熱
量を低く抑えれば、巻線内部の条溝体５ａ、５ｂに発生
した熱が熱伝導により中間接続用導体８に流入し、中間
接続用導体８の巻線外に露出した部分から放散されるの
で、巻線内部からの放熱効果が上がり、オイルダクトの
減少、条溝体の電流密度の引上げにより巻線を小形化す
ることができる。In addition, in the conventional two-row split winding shown in Fig. 2.4,
The current density of the intermediate connection conductor 8 is determined by the groove body 5 which is a winding conductor.
The temperature rise in the windings was about the same as that in a and 5b, so the only way to reduce the temperature rise in the windings was to install more oil ducts between the winding layers or to lower the current density in the grooves 5a and 5b. If the current density of the connecting conductor 8 is set lower than the current density of the groove members 5a and 5b, and the heat generation amount of the intermediate connection conductor 8 itself is kept low, the heat generated in the groove members 5a and 5b inside the winding can be reduced. flows into the intermediate connection conductor 8 by heat conduction and is dissipated from the portion of the intermediate connection conductor 8 exposed outside the winding, increasing the heat radiation effect from inside the winding, reducing the number of oil ducts, and reducing the number of grooves. The winding can be made smaller by increasing the current density.

これは第１図、第６図、第７図に示す各実施例に適用で
きるほか、第２図に示すような偶数巻の２列分割巻条巻
線に適用しても同様の効果が得られる。This can be applied to each of the embodiments shown in Figs. 1, 6, and 7, and the same effect can be obtained even if it is applied to a two-row split coil winding with an even number of turns as shown in Fig. 2. It will be done.

〔発明の効果〕　本発明によれば、２列分割巻線を直列
接続してなる条巻線の巻回数を奇数で選ぶことができる
ので、従来の偶数でしか巻回数を選べなかった巻線様式
と併用することにより、設計の自由度が増し、所要の特
性を満足させながら変圧器の最経済設計を行なうことが
容易にできる。[Effects of the Invention] According to the present invention, it is possible to select an odd number of windings for a strip winding formed by connecting two-row divided windings in series. By using it in combination with the style, the degree of freedom in design increases, and it becomes easy to carry out the most economical design of the transformer while satisfying the required characteristics.

また、従来の２列分割巻条巻線にあったようなライン口
出線と中間接続用導体による巻線の一方側への片寄った
膨らみをなくし、巻線形状をタンクへの収納に適した対
称形とすることができ、タンクを小形化できるという効
果もある。In addition, the bulge of the winding to one side due to the line lead wire and intermediate connection conductor, which was present in conventional two-row split windings, has been eliminated, and the winding shape has been changed to be suitable for storage in a tank. It also has the effect of being able to have a symmetrical shape and making the tank smaller.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示す側断面図、第２図は従
来の２列分割巻条巻線を示す側断面図、第３図は２列分
割巻条巻線を用いた変圧器巻線の概形図、第４図は従来
の２列分割巻条巻線の展開接続図、第５図は第１図に示
す実施例の展開接続図、第６図、第７図は本発明の他の
実施例を示す側断面図、第８図は最経済設計点の求め方
の説明図、第９図は従来の２列分割巻条巻線の外観図、
第１０図は第１図、第６図に示す実施例の外観図である
。Fig. 1 is a side sectional view showing an embodiment of the present invention, Fig. 2 is a side sectional view showing a conventional two-row split winding, and Fig. 3 is a transformer using a two-row split winding. 4 is a developed connection diagram of a conventional two-row divided winding, FIG. 5 is a developed connection diagram of the embodiment shown in FIG. 1, and FIGS. 6 and 7 are A side sectional view showing another embodiment of the present invention, FIG. 8 is an explanatory diagram of how to find the most economical design point, FIG. 9 is an external view of a conventional two-row divided coil winding,
FIG. 10 is an external view of the embodiment shown in FIGS. 1 and 6. FIG.

Claims (1)

【特許請求の範囲】[Claims] 　上下２列に分割して巻かれた条溝体からなる分割巻線
を中間接続用導体により直列接続して構成した変圧器巻
線において、各分割巻線は、径方向の中心に対して互に
反対側の位置に巻始め端を有し、かつ径方向の中心に対
してライン口出線に接続された端部とは反対側に位置す
る端部で直列接続されていることを特徴とする変圧器巻
線。In a transformer winding constructed by connecting divided windings consisting of grooves and strips wound in two rows, upper and lower, in series through an intermediate connecting conductor, each divided winding is arranged in parallel with respect to the center in the radial direction. It has a winding start end at a position opposite to the line, and is connected in series at an end located on the opposite side of the end connected to the line outlet wire with respect to the radial center. transformer winding.