JPS60193316A - Direct current oil filled electric apparatus - Google Patents
Direct current oil filled electric apparatusInfo
- Publication number
- JPS60193316A JPS60193316A JP4819284A JP4819284A JPS60193316A JP S60193316 A JPS60193316 A JP S60193316A JP 4819284 A JP4819284 A JP 4819284A JP 4819284 A JP4819284 A JP 4819284A JP S60193316 A JPS60193316 A JP S60193316A
- Authority
- JP
- Japan
- Prior art keywords
- insulating
- bushing
- oil
- lead wire
- insulation
- 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.)
- Pending
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)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は直流油入電気機器に係り、特にブッシング下部
における絶縁高圧リード線との接続部近傍の絶縁構造の
改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to DC oil-filled electrical equipment, and more particularly to an improvement in the insulation structure near the connection portion with an insulated high-voltage lead wire in the lower part of the bushing.
最近、憚路の建設費が安く、大電力長距離送電に有利で
あるなどの利点から直流送電の開発が進められている。Recently, the development of DC power transmission has been progressing due to its advantages such as low construction cost and advantageous for transmitting large amounts of power over long distances.
この直流送電設備のうち直流油入電気機器、例えば直流
送電用の変圧器は、従来から油入絶縁された構造が多く
用いられている。このような油入絶縁された構造は、交
流送電用の変圧器を基本として、直流送電用の変圧器特
有の絶縁問題を解決しながら構造設計されている。Among these DC power transmission equipment, many DC oil-filled electric devices, such as transformers for DC power transmission, have an oil-filled and insulated structure. Such an oil-filled insulated structure is designed based on a transformer for AC power transmission, while solving the insulation problem peculiar to a transformer for DC power transmission.
しかし、近年直流送電圧の増加、送電容量の増大がみら
れ、直流送電用の変圧器においても、これらに対処する
ため、棟々の工夫をしながら高電圧、大容量の変圧器が
検討されている。この場合、大きな問題点としては高電
圧化にともなう直流耐電圧の問題がある。However, in recent years, there has been an increase in DC transmission voltage and power transmission capacity, and in order to cope with these problems, high-voltage, large-capacity transformers are being considered for DC power transmission transformers. ing. In this case, a major problem is that of DC withstand voltage as the voltage increases.
周知のように直流電圧は、材料の絶縁抵抗率によって電
圧分布が決定されるものである。これは交流電圧のよう
に材料の誘電率によって電圧分布が決定される場合に比
べ、電圧分布に大きな違いが生じる。また材料の強さを
みると、直流電圧の場合においては絶縁油は油浸紙に比
して極めて弱い。一方交流電圧の場合、絶縁油と油浸紙
はtlぼ同じか、油浸紙の方が若干強い特性を示してい
る。As is well known, the voltage distribution of DC voltage is determined by the insulation resistivity of the material. This results in a large difference in voltage distribution compared to cases where the voltage distribution is determined by the dielectric constant of the material, such as with AC voltage. In terms of material strength, insulating oil is extremely weak compared to oil-impregnated paper in the case of DC voltage. On the other hand, in the case of AC voltage, the insulating oil and oil-impregnated paper are about the same in tl, or the oil-impregnated paper exhibits slightly stronger characteristics.
絶縁油の直流針′醒圧は交流耐電圧より低く、油浸紙の
直流耐電圧は交流耐電圧の数倍である。このようなこと
から絶縁材料の特性と電位分布の特徴を生かした直流絶
縁構造の工夫がなされて実用化されている。The DC withstand voltage of insulating oil is lower than the AC withstand voltage, and the DC withstand voltage of oil-impregnated paper is several times higher than the AC withstand voltage. For this reason, DC insulation structures that take advantage of the characteristics of insulating materials and potential distribution have been devised and put into practical use.
しかしながら、交流送電用の変圧器の絶縁構造、 上で
全く問題にならなかった構造が、直流送電用の変圧器に
おいて問題になる個所がある。それは変圧器において、
変圧器本体のコイルと接続された絶縁高圧リード線と油
入ブッシングとの接続部あるいは油入ブッシングの絶縁
シールドの周辺部である。これらの部分においては第1
図に示すように油入プッシングエの油中側、すなわち下
部端子2と変圧器本体コイル(図示しない)から導出さ
れる絶縁高圧リード線3とを接続し、この接続部4の周
辺の電界を緩和するために絶縁シールド5を下部端子2
に接続する。また油入ブッシングエは下部がい管6内部
に絶縁コアー7aを有する中心導体7を収納し、絶縁油
8が満されている。そしてこの接続部4近傍の電界分布
9は点線で示すように直流電界の集中が著しく、絶縁淘
迫上解次すべき問題点があった。However, the insulation structure of transformers for AC power transmission, which did not pose any problems above, may become a problem in transformers for DC power transmission. In the transformer,
This is the connection between the insulated high-voltage lead wire connected to the coil of the transformer body and the oil-filled bushing, or the area around the insulation shield of the oil-filled bushing. In these parts, the first
As shown in the figure, the oil-filled side of the oil-immersed pusher, that is, the lower terminal 2, is connected to the insulated high-voltage lead wire 3 derived from the transformer main body coil (not shown), and the electric field around this connection part 4 is alleviated. Insulating shield 5 to lower terminal 2
Connect to. Further, the oil-filled bushing accommodates a center conductor 7 having an insulating core 7a inside the lower insulator tube 6, and is filled with insulating oil 8. In the electric field distribution 9 near the connection portion 4, there is a significant concentration of the DC electric field as shown by the dotted line, and there is a problem that needs to be resolved in terms of insulation.
本発明は上記の点を考慮してなされたもので、その目的
とするところは直流耐電圧が優れ、14ff単な構造を
有する直流油入電気機器を提供することにある。The present invention has been made in consideration of the above points, and an object thereof is to provide a DC oil-filled electric device having an excellent DC withstand voltage and a simple 14ff structure.
かかる目的を達成するために本発明によれば、電気機器
本体のコイルから導出された絶縁高圧リード線とブッシ
ングの油中側の下端部との接続部の周囲を覆うように複
数個の絶縁バーリヤをブッシングを中心として同心軸状
に設け、これらの絶縁バーリヤはブッシングに対し外側
の絶縁バーリヤの軸方向の高さを順次旨くシ、それぞれ
の絶縁バーリヤに絶4ぺ高圧リード線を挿通した絶縁底
板を取付け、順次それぞれの絶縁底板間に絶縁高圧リー
ド線を密着して貫通する絶縁板を設けることによシ、直
流針′「に圧が優れ、簡単な構造としたことを特徴とす
る。In order to achieve this object, the present invention provides a plurality of insulating barriers so as to cover the connection portion between the insulated high-voltage lead wire led out from the coil of the electrical equipment main body and the lower end of the oil submerged side of the bushing. are arranged concentrically around the bushing, and these insulating barriers are arranged in such a way that the height of the outer insulating barrier in the axial direction relative to the bushing is adjusted in order, and an insulating bottom plate with four high voltage lead wires inserted through each insulating barrier is installed. The present invention is characterized in that it has an excellent DC needle's pressure and a simple structure by sequentially providing an insulating plate through which an insulated high-voltage lead wire is closely attached and penetrated between each insulating bottom plate.
$ a11!iの絶縁バーリヤのそれぞれの絶縁底板の
順次相互間のを1ぼ中間位置に絶縁高圧リード線が密着
して貫通するとともに直交するように絶縁板を固着する
のが好適である。$a11! It is preferable that the insulating plates are fixed so that the insulated high-voltage lead wires closely penetrate through the respective insulating bottom plates of the insulating barrier (i) at a position approximately halfway between the respective insulating bottom plates of the insulating barrier (i) and are perpendicular to each other.
それぞれの絶縁板の径がブッシングの下端側に位置する
それぞれの絶縁底板の径とほぼ同等に形成するのが好適
である。It is preferable that the diameter of each insulating plate is approximately equal to the diameter of each insulating bottom plate located on the lower end side of the bushing.
〔発明の実施例」
以下、本発明の直流油入電気機器の一実施例を第2図な
いし第5図を参照して説明する。直流油入電気機器には
例えば変圧器、リアクトル及びブッシングがあるが、こ
のうち直流油入変圧器について説明する。第2図におい
て、変圧器タンク11内部に変圧器本体、すなわち鉄心
11aに巻装されたコイルllbを収納し、変圧器タン
ク11に取付けられたブッシングポケット部12にブッ
シング13が取付けられ、変圧器タンク11及びブッシ
ングポケット部12内部に絶縁油11cが充てんされて
いる。[Embodiment of the Invention] Hereinafter, an embodiment of the DC oil-filled electrical equipment of the present invention will be described with reference to FIGS. 2 to 5. DC oil-filled electrical equipment includes, for example, transformers, reactors, and bushings, and among these, the DC oil-filled transformer will be explained. In FIG. 2, a transformer main body, that is, a coil Ilb wound around an iron core 11a, is housed inside a transformer tank 11, a bushing 13 is attached to a bushing pocket 12 attached to the transformer tank 11, and a bushing 13 is attached to a bushing pocket 12 attached to the transformer tank 11. The tank 11 and the bushing pocket 12 are filled with insulating oil 11c.
ブッシング13のF端部、すなわち油中側の下部端子1
4には絶縁シールド15が取付けられ、この下部端子1
4とコイルllbとを絶縁高圧リード線1Gによって接
続する。この絶縁高圧リードfa16と下部端子14と
の接続部17の近傍、絶縁シールド15の外周部及びブ
ッシング13の油中側とを後述するように絶縁バーリヤ
18によって包囲するように設ける。The F end of the bushing 13, that is, the lower terminal 1 on the oil side
4 is attached with an insulating shield 15, and this lower terminal 1
4 and coil llb are connected by an insulated high voltage lead wire 1G. The vicinity of the connecting portion 17 between the insulated high-voltage lead fa16 and the lower terminal 14, the outer periphery of the insulating shield 15, and the oil side of the bushing 13 are provided so as to be surrounded by an insulating barrier 18, as will be described later.
また、第3図において、ブッシング13の下側部すなわ
ち油中側は油中側がい管13a内部に図示しない絶縁コ
アーを設けた中心導体が収納され、この中心導体は下部
端子14と接続され、下部がい管13a内部に絶縁油が
充てんされている。そして絶縁シールド15はリング状
導体15aの外周を絶縁部材例えば絶縁紙を巻回して被
覆した絶縁部材層15bを形成し、ブッシング13の下
部端子14にリング状導体15aに接続されている取付
金具15cを介して取付けられる。また、絶縁高圧リー
ド線16はリード線16aに例えば油浸絶縁紙を巻回し
た絶縁層16bを形成し、コイル(第2図参照)と下部
端子14とを取付金具14aを介して接続する。In addition, in FIG. 3, the lower part of the bushing 13, that is, the oil-submerged side, houses a center conductor provided with an insulating core (not shown) inside the oil-submerged insulator tube 13a, and this center conductor is connected to the lower terminal 14. The inside of the lower insulator tube 13a is filled with insulating oil. The insulating shield 15 includes an insulating material layer 15b formed by wrapping an insulating material such as insulating paper around the outer periphery of the ring-shaped conductor 15a, and a mounting bracket 15c connected to the lower terminal 14 of the bushing 13 to the ring-shaped conductor 15a. Mounted via. Further, the insulated high-voltage lead wire 16 has an insulating layer 16b formed by winding, for example, oil-impregnated insulating paper around the lead wire 16a, and connects the coil (see FIG. 2) and the lower terminal 14 via the mounting fitting 14a.
絶縁パーリヤ18は繊維質絶縁材料、例えばプレスポー
ドによって複数個の筒状部に絶縁底板を固着し、絶縁底
板相互間に絶縁板を設けて構成される。図示では絶縁パ
ーリヤ18は例えば3個、すなわち3層について説明す
る。The insulating purrier 18 is constructed by fixing insulating bottom plates to a plurality of cylindrical parts using a fibrous insulating material, for example, presspod, and providing insulating plates between the insulating bottom plates. In the illustrated example, three insulating purriers 18, that is, three layers will be explained.
第3図において、ブッシング13の接続部17周辺を包
囲する第1層目すなわち最内側の絶縁パーリヤ18−1
は筒状部18aと絶縁底板19aとがらなっている。そ
して筒状部18aは例えばプレスポードを巻回して絶縁
シールド15の外周部に固着する。In FIG. 3, the first layer, that is, the innermost insulating purrier 18-1 surrounding the connection portion 17 of the bushing 13
The cylindrical portion 18a and the insulating bottom plate 19a are separated. The cylindrical portion 18a is fixed to the outer periphery of the insulating shield 15 by winding a press rod, for example.
絶縁底板19aには挿通孔2oをあけ、この挿通孔20
に絶縁高圧リード線16を挿通した状態で、筒状部18
aの下側を閉じるように絶縁底板19aを接着剤あるい
は絶縁ボルト締めによってこの周辺を油密となるように
固着する。An insertion hole 2o is formed in the insulating bottom plate 19a, and this insertion hole 20
With the insulated high voltage lead wire 16 inserted through the cylindrical part 18
The insulating bottom plate 19a is fixed with adhesive or insulating bolts so as to close the lower side of the insulating bottom plate 19a in an oil-tight manner.
また第2層目すなわち中間の絶縁パーリヤ18−7は筒
状部18bと絶縁底板19bとからなっている。The second or intermediate insulating parrier 18-7 is composed of a cylindrical portion 18b and an insulating bottom plate 19b.
そして筒状部18bは例えばプレスポードをスは−サ(
図示しない)をおいて巻回して固着し、この筒状部18
bの下側を閉じるように絶縁底板19bを接着剤あるい
は絶縁ボルト締めによって周辺を油密となるように固着
する。また、絶縁底板19bには挿通孔20をあけ、こ
の挿通孔2oに絶縁歯用リード線16を挿通する。The cylindrical portion 18b can, for example, support a presspod (
(not shown) is wound and fixed, and this cylindrical part 18
The insulating bottom plate 19b is fixed with adhesive or insulating bolts so as to close the lower side of the insulating bottom plate 19b so as to make the periphery oil-tight. Further, an insertion hole 20 is formed in the insulating bottom plate 19b, and the insulated tooth lead wire 16 is inserted into the insertion hole 2o.
さらに第3層目すなわち最外層の絶縁パーリヤ18−s
は筒状部18cと絶縁板19cとからなっている。Furthermore, the third layer, that is, the outermost layer of insulating purrier 18-s
consists of a cylindrical portion 18c and an insulating plate 19c.
筒状部18cは例えばスペーサ(図示しない)を介して
絶縁パーリヤ18−7の筒状部18bの外側に例えばプ
レスポードを巻回して固着し、 この筒状部18cの下
側を閉じるように絶縁底板19cを接着剤、あるいは絶
縁ボルト締めによって、この周辺を油密となるように固
着する。そして絶縁底板19cに設けた挿通孔20に絶
縁高圧リード&!16を挿通する。The cylindrical portion 18c is fixed by winding, for example, a press rod around the outside of the cylindrical portion 18b of the insulating purrier 18-7 via a spacer (not shown), and an insulating bottom plate is attached to close the lower side of the cylindrical portion 18c. 19c is fixed around the area with adhesive or insulating bolts so as to be oil-tight. Then, the insulated high voltage lead &! is inserted into the insertion hole 20 provided in the insulated bottom plate 19c. 16.
そして、ブッシング13の中心軸に沿つ方向に取付けら
れた絶縁高圧リード線16上において、絶縁底板19a
と絶縁底板19bとのはは中間位置に、上側すなわち下
部端子14側の絶縁底板19aとほぼ同等な直径を有す
る絶縁板21aを設ける。この絶縁板21aにはほぼそ
の中央に絶縁高圧リード線16を貫通させ、この貫通し
ている部分を例えば絶縁テープ23を巻回して固着する
。Then, on the insulated high voltage lead wire 16 attached in the direction along the central axis of the bushing 13, the insulated bottom plate 19a
An insulating plate 21a having approximately the same diameter as the insulating bottom plate 19a on the upper side, that is, the lower terminal 14 side, is provided at an intermediate position between the insulating bottom plate 19b and the insulating bottom plate 19b. The insulated high-voltage lead wire 16 is passed through the insulating plate 21a approximately at the center thereof, and the penetrating portion is fixed by wrapping an insulating tape 23, for example.
また、絶縁紙板19bと絶縁底板19cとのほぼ中央位
置に、上側すなわち下部端子14側の絶縁底板19bと
tlぼ同等な直径を有する絶縁板21bを設ける。Further, an insulating plate 21b having a diameter approximately equal to that of the insulating bottom plate 19b on the upper side, that is, the lower terminal 14 side, is provided at a substantially central position between the insulating paper board 19b and the insulating bottom plate 19c.
この絶縁板21hにはほぼその中央に絶縁高圧り−ド線
16を貫通させ、この貫通している部分を例えば絶縁テ
ープ23を巻回して固層する。An insulated high-voltage lead wire 16 is passed through the insulating plate 21h approximately at the center thereof, and the penetrating portion is fixed by wrapping an insulating tape 23, for example.
そして、絶縁パーリヤ18−t 、 18−t 、18
−mのそれぞれの筒状部18a、 18b、 18cは
ブッシング13に対して外側に向って順次軸方向の高さ
を高く形成し、筒状部18cの上端はブッシングポケッ
ト部12の上部内壁12aに例えば絶縁ボルト(図示し
ない)締めによって固着する。And insulating parliars 18-t, 18-t, 18
The cylindrical portions 18a, 18b, and 18c of the bushing 13 are sequentially increased in height in the axial direction toward the outside of the bushing 13, and the upper end of the cylindrical portion 18c is connected to the upper inner wall 12a of the bushing pocket portion 12. For example, it is fixed by tightening an insulating bolt (not shown).
次に本発明の作用効果について説明する。本発明のよう
に複数個、図示しでは3個すなわち3 Mの絶縁パーリ
ヤ18−* 、18−t 、18−s及びそれぞれの中
間位置に絶縁板21a、 21bを設けることによって
、従来のような(第1図参照)直流電位分布の片寄りが
なくなる。また直流耐電圧を著しく向上させることがで
きる。Next, the effects of the present invention will be explained. By providing a plurality of insulating parriers 18-*, 18-t, 18-s, and insulating plates 21a and 21b at their respective intermediate positions, as in the present invention, it is possible to improve (See Figure 1) The bias in the DC potential distribution is eliminated. Further, the DC withstand voltage can be significantly improved.
このような直流耐電圧の向上は第4図及び第5図に示す
ような沿面の直流耐電圧すなわち直流絶縁破壊試験結果
によって推察することができる。Such an improvement in DC withstand voltage can be estimated from the creeping DC withstand voltage, ie, the results of a DC dielectric breakdown test, as shown in FIGS. 4 and 5.
第4図は平円板状の上側電極人と広い平板状とみなされ
る下側電極8間に絶縁パーリヤとしてバ−リヤ無し、パ
ーリヤ25ヨ、 25−、 、25.、−、 、25−
、 。FIG. 4 shows a case where there is no barrier as an insulating barrier between the upper electrode in the form of a flat disk and the lower electrode 8 which is considered to be in the shape of a wide flat plate. ,−, ,25−
, .
25−5を順次設けて、上側電極A及び下側電極B1司
に直流電圧を印加して直流絶縁破壊電圧を測定する試験
である。In this test, 25-5 were sequentially provided, a DC voltage was applied to the upper electrode A and the lower electrode B1, and the DC breakdown voltage was measured.
その試験結果を第5図に示す。第5図において縦軸はバ
ーリヤの全くない場合の直流絶縁破壊電圧を1としてこ
れと比較した直流絶縁破壊電圧比をとり、横軸には順次
零すなわちバーリヤ無し、パーリヤ1枚、2枚、3枚、
4枚、5枚としたパーリヤ枚数をとると、その結果は曲
線工に示すようになる。すなわち、曲線工に示すように
パーリヤ枚数が増加するにつれ直流絶縁破壊電圧比は上
昇する。このようにバーリヤが直流耐電圧に及ぼす効果
は著しくパーリヤ5枚ではパーリヤ零すなわちバーリヤ
のない場合に比べほぼ1.8倍の直流絶縁破壊電圧を有
するという効果が得られる。The test results are shown in FIG. In Fig. 5, the vertical axis shows the DC breakdown voltage ratio compared with the DC breakdown voltage when there is no barrier at all, and the horizontal axis shows the DC breakdown voltage ratio in order of zero, that is, no barrier, one barrier, two barriers, and three. Sheet,
If we take the number of pariahs as 4 and 5, the result will be as shown in the curve work. That is, as shown in the curved line, as the number of purriers increases, the DC breakdown voltage ratio increases. As described above, the effect that the barrier has on the DC withstand voltage is remarkable, and with five barrier layers, it is possible to obtain the effect that the DC breakdown voltage is approximately 1.8 times higher than that with zero barrier, that is, with no barrier.
このように本発明によればブッシングの油中側の下端部
における直流電位分布の改善と、直流耐電圧を向上する
ことができる。As described above, according to the present invention, it is possible to improve the DC potential distribution and the DC withstand voltage at the lower end of the bushing on the oil side.
なお、絶縁パーリヤの個数は3個について説明したが、
この個数すなわち層数は限定することなく、ほかの層数
においても同様な効果が得られる。In addition, although the number of insulating purriers was explained as three,
The number of layers, that is, the number of layers is not limited, and similar effects can be obtained with other numbers of layers.
し発明の効果〕
以上説明したように本発明によれば、ブッシングの油中
側の下端部と絶縁高圧リード線の接続部及びブッシング
の油中側を包囲するように外周に複数個の絶縁バーリヤ
を設け、また絶縁バーリヤの絶縁底板間に絶縁板を設け
ることにより、直流電位分布の改善と、直流耐電圧を向
上することのできる直流油入電気機器を提供することが
できる。[Effects of the Invention] As explained above, according to the present invention, a plurality of insulating barriers are provided on the outer periphery so as to surround the lower end of the oil side of the bushing and the connection portion of the insulated high voltage lead wire, and the oil side of the bushing. By providing an insulating plate between the insulating bottom plates of the insulating barrier, it is possible to provide a DC oil-filled electrical device that can improve the DC potential distribution and the DC withstand voltage.
第1図は従来の直流油入変圧器のブッシング接続部を示
す一部断面正面図及び電界分布図、第2図は本発明の直
流油入変圧器の一部断面側面図、
第3図は第2図のブッシングの油中側の断面図、第4図
は本発明の絶縁パーリヤの効果をみる直流絶縁破壊試験
における電極配置を示す説明図、第5図は第4図の電極
配置における絶縁パーリヤの個数に応じた直流絶縁破壊
電圧比を示す線図である。
11 ・・・変圧器タンク、 11a゛鉄心、11b
・コイル、 lie・・・絶縁油、12 ・・・ブッシ
ングポケット部、
13 ・・ブッシング、14 ・・・下部端子、15
・・・絶縁シールド、 15a・・・絶縁層、16 ・
・・絶縁高圧リード線、16a・・・リード線、16b
−絶縁層、 17 ・・・接続部、18 ・・・絶縁
パーリヤ、
18−+ 、18−2 、18−a・・・筒状部、19
−1.19−2 、19−s・・絶縁底板、21a、
211) −絶縁板、
25−+ 、 25−2 、25−3 、25−、 、
25−、・・・バーリヤ、A・上側型、ト飢、 13・
・・下側電極。
代理人 弁理士 井 上 −男
第 1 図
第 2 図
第 3 図Fig. 1 is a partially sectional front view and electric field distribution diagram showing the bushing connection part of a conventional DC oil-immersed transformer, Fig. 2 is a partially sectional side view of the DC oil-immersed transformer of the present invention, and Fig. 3 is Figure 2 is a sectional view of the bushing in oil, Figure 4 is an explanatory diagram showing the electrode arrangement in a DC dielectric breakdown test to see the effect of the insulating purrier of the present invention, and Figure 5 is the insulation in the electrode arrangement of Figure 4. FIG. 3 is a diagram showing a DC breakdown voltage ratio depending on the number of purriers. 11...Transformer tank, 11a゛iron core, 11b
・Coil, lie...Insulating oil, 12...Bushing pocket part, 13...Bushing, 14...Lower terminal, 15
... Insulating shield, 15a... Insulating layer, 16 ・
...Insulated high voltage lead wire, 16a...Lead wire, 16b
- insulating layer, 17... connection part, 18... insulating purrier, 18-+, 18-2, 18-a... cylindrical part, 19
-1.19-2, 19-s...Insulating bottom plate, 21a,
211) -insulating plate, 25-+, 25-2, 25-3, 25-, ,
25-,... Barrier, A. Upper type, To starvation, 13.
...lower electrode. Agent Patent Attorney Mr. Inoue Figure 1 Figure 2 Figure 3
Claims (3)
グの油中側の下端部と電気機器本体のコイルから導出さ
れた絶縁高圧リード線との接続部を備えた直流油入′電
気機器において、ブッシングの油中側及びこの下端部と
絶縁高圧リード線との接続の周囲を覆うように複数個の
絶縁パーリヤを前記ブッシングを中心として相互に距離
をおいて同心軸状に設け、この複数個の絶縁バーリヤは
それぞれ筒状部及び絶縁底板とからなシ、このそれぞれ
の筒状部は前記ブッシングに対し、外側に位置する前記
筒状部の高さをJIIR次高く形成し、それぞれのこの
筒状部に前記絶縁高圧リード線を挿通した前記絶縁底板
をそれぞれ固着し、この絶縁底板の順次相互間に前記絶
縁高圧リード線が密着して貫通するようにして絶縁板を
設けたことを特徴とする直流油入電気機器。(1) In DC oil-immersed electrical equipment that has a connection between the oil-immersed lower end of the bushing attached to the bushing pocket and the insulated high-voltage lead wire derived from the coil of the electrical equipment body, A plurality of insulating barriers are provided concentrically at a distance from each other around the bushing so as to cover the middle side and the periphery of the connection between the lower end portion and the insulated high voltage lead wire, and the plurality of insulating barriers are Each of the cylindrical portions is formed with a cylindrical portion and an insulating bottom plate, and each of the cylindrical portions is formed so that the height of the cylindrical portion located on the outside is JIIR higher than the bushing. The DC oil-filled DC oil-filled device is characterized in that the insulated bottom plates into which the insulated high voltage lead wires are inserted are fixed to each other, and insulating plates are provided between the insulated bottom plates in such a way that the insulated high voltage lead wires are passed through the insulated bottom plates in close contact with each other. electrical equipment.
圧リード線にほぼ直交するように設けた特許請求の範囲
第1項記載の直流油入電気機器。(2) The DC oil-filled electrical equipment according to claim 1, wherein the insulating plate is located approximately at the center between the insulating bottom plates and is provided approximately orthogonally to the insulated high voltage lead wire.
底板の径とほぼ等しいように形成された特許請求の範囲
第1項又は第2項記載の直流油入電気機器。(3) The DC oil-filled electrical equipment according to claim 1 or 2, wherein the diameter of the insulating plate is approximately equal to the diameter of the insulating bottom plate closer to the lower end of the bushing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4819284A JPS60193316A (en) | 1984-03-15 | 1984-03-15 | Direct current oil filled electric apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4819284A JPS60193316A (en) | 1984-03-15 | 1984-03-15 | Direct current oil filled electric apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60193316A true JPS60193316A (en) | 1985-10-01 |
Family
ID=12796520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4819284A Pending JPS60193316A (en) | 1984-03-15 | 1984-03-15 | Direct current oil filled electric apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60193316A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105428007A (en) * | 2014-09-22 | 2016-03-23 | 北京瑞恒新源投资有限公司 | Combined electric appliance with multi-capacitive screen insulation core |
CN105489355A (en) * | 2016-01-06 | 2016-04-13 | 成都格瑞思文化传播有限公司 | High-voltage wire outlet device for transformer |
EP3514810A1 (en) * | 2018-01-19 | 2019-07-24 | Siemens Aktiengesellschaft | Improved lead exit arrangement in an electrical device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5681909A (en) * | 1979-12-10 | 1981-07-04 | Hitachi Ltd | Terminal conductor connecting system |
-
1984
- 1984-03-15 JP JP4819284A patent/JPS60193316A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5681909A (en) * | 1979-12-10 | 1981-07-04 | Hitachi Ltd | Terminal conductor connecting system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105428007A (en) * | 2014-09-22 | 2016-03-23 | 北京瑞恒新源投资有限公司 | Combined electric appliance with multi-capacitive screen insulation core |
CN105489355A (en) * | 2016-01-06 | 2016-04-13 | 成都格瑞思文化传播有限公司 | High-voltage wire outlet device for transformer |
EP3514810A1 (en) * | 2018-01-19 | 2019-07-24 | Siemens Aktiengesellschaft | Improved lead exit arrangement in an electrical device |
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