JPS58108727A - Insulating coil for oil-filled electric apparatus - Google Patents
Insulating coil for oil-filled electric apparatusInfo
- Publication number
- JPS58108727A JPS58108727A JP20864281A JP20864281A JPS58108727A JP S58108727 A JPS58108727 A JP S58108727A JP 20864281 A JP20864281 A JP 20864281A JP 20864281 A JP20864281 A JP 20864281A JP S58108727 A JPS58108727 A JP S58108727A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- insulating
- paper
- coil
- film
- 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
- H01F27/323—Insulation between winding turns, between winding layers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Insulating Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、油入変圧器、油入りアクドルなどの油入電
気機器に用いられる絶縁コイルに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insulated coil used in oil-filled electrical equipment such as oil-filled transformers and oil-filled paddles.
従来の絶縁コイルは、第1図に示すように、コイル導体
12の周囲に、油含浸性絶縁抄紙または高分子系無孔性
フィルムのような単一の絶縁紙12を巻回したもので構
成されていた。ところが油含浸性絶縁抄紙を用いたもの
と、高分子系無孔性フィルムを用いたものとを比較した
場合、前者は後者よりも絶縁耐力が低く、また後者は前
者よりもコロナ開始電圧が低いという欠点があった。As shown in FIG. 1, a conventional insulated coil consists of a coil conductor 12 wrapped around a single insulating paper 12 such as oil-impregnated insulating paper or a polymeric nonporous film. It had been. However, when comparing those using oil-impregnated insulating paper and those using nonporous polymeric film, the former has a lower dielectric strength than the latter, and the latter has a lower corona onset voltage than the former. There was a drawback.
この発明は、上記のような欠点を解消するためになされ
たもので、その目的とするところは、絶縁耐力およびコ
ロナ開始電圧がともに高い絶縁コイルを提供することに
ある。This invention was made to eliminate the above-mentioned drawbacks, and its purpose is to provide an insulated coil with high dielectric strength and high corona initiation voltage.
つぎにこの発明の一実施例を図について説明する。第2
図において、21はコイル導体、22は油含浸性絶縁抄
紙、23は高分子系無孔性フィルムである。油含浸性絶
縁抄紙22および高分子系無孔性フィルム23は相互に
重ね合わされ、コイル導体21の周囲に必要な回数だけ
巻かれて絶縁層を形成している。Next, one embodiment of the present invention will be described with reference to the drawings. Second
In the figure, 21 is a coil conductor, 22 is an oil-impregnated insulating paper, and 23 is a polymeric nonporous film. The oil-impregnated insulating paper 22 and the polymeric non-porous film 23 are stacked on top of each other and wound around the coil conductor 21 the required number of times to form an insulating layer.
第3図は、第2図に示した構造の絶縁層を有するコイル
導体21がコイル状に巻かれたときに、これと隣接する
コイル導体21との間に形成される絶縁層の構成を示し
ている。油含浸性絶縁抄紙22は、それぞれtk1〜t
kn’′の厚さを有し、また高分子系無孔性フィルム2
3は、それぞれt、1〜t p nの厚さを有し、そし
て相互に隣接するコイル(3)
導体21.21′間に電位差Vがあるものとする。FIG. 3 shows the structure of the insulating layer formed between the coil conductor 21 having the structure shown in FIG. 2 and the adjacent coil conductor 21 when the coil conductor 21 is wound into a coil. ing. The oil-impregnated insulating paper 22 has tk1 to tk, respectively.
kn'' thickness, and a polymeric non-porous film 2
3 have a thickness of t, 1 to t p n, respectively, and it is assumed that there is a potential difference V between the mutually adjacent coil (3) conductors 21, 21'.
このような絶縁構成において、油含浸性絶縁抄紙22内
の電界強度EKは全ての層で等しく、次式で表わされる
。In such an insulating configuration, the electric field strength EK within the oil-impregnated insulating paper 22 is equal in all layers and is expressed by the following equation.
ただし tp−tp1+tp2・・・、+1pntk−
1kl”k2・・・ 、+tI(nε、: 油含浸性絶
縁抄紙の誘電率
εに: 高分子系無孔性フィルムの誘
電率
一方、従来の絶縁構成のように、コイル導体間に全て同
じ絶縁強度と誘電率を有する油含浸性絶縁抄紙が設けら
れた場合、この油含浸性絶縁抄紙内の電界強度Ekは次
式で表わされる。However, tp-tp1+tp2..., +1pntk-
1kl"k2..., +tI(nε,: Dielectric constant ε of oil-impregnated insulating paper: Dielectric constant of polymer non-porous film On the other hand, as in the conventional insulation configuration, the same insulation is applied between all coil conductors. When an oil-impregnated insulating paper having strength and dielectric constant is provided, the electric field strength Ek within the oil-impregnating insulating paper is expressed by the following equation.
Ek−−□ ・・φ(2)
・k(ζ)
ただし T−tp+tk
(1)式および(2)式より、εk>5ならばE′k>
Ek(4)
となる。したがって(1)式で示す複合絶縁構造におい
て、油含浸性絶縁抄紙の絶縁強度はその厚さが変化して
も変わらないので、Ek=Ek になるまで総給縁厚
さくT=tk+t、)を縮小して、油含浸性絶縁抄紙内
の電界強度を高くすることが可能である。このため複合
絶縁構造の総給縁厚さT′は、のようになり、両コイル
導体21および21間の絶縁厚さを
たけ縮小できることとなる。Ek−−□ ・・φ(2) ・k(ζ) However, T−tp+tk From equations (1) and (2), if εk>5, E′k>
Ek(4). Therefore, in the composite insulation structure shown by equation (1), the insulation strength of the oil-impregnated insulating paper does not change even if its thickness changes, so the total edge thickness T = tk + t, ) is increased until Ek = Ek. It is possible to reduce the electric field strength within the oil-impregnated insulating paper. Therefore, the total edge thickness T' of the composite insulation structure is as follows, and the insulation thickness between both coil conductors 21 and 21 can be greatly reduced.
また高分子系無孔性フィルム23は、その吸油率が油含
浸性絶縁抄紙に比べるとはるかに小さいため、フィルム
内にボイドが残りやすく、コロナ開始電圧も低い傾向に
あるが、この傾向は、隣接する油含浸性絶縁抄紙によっ
て除かれている。Furthermore, since the oil absorption rate of the polymer nonporous film 23 is much lower than that of oil-impregnated insulating paper, voids tend to remain in the film and the corona onset voltage tends to be low. It is excluded by the adjacent oil-impregnated insulating paper.
第4図は、使用される高分子系無孔性フィルムの誘電率
と、従来の絶縁層の厚さを100とじたときの本発明の
絶縁層の厚さの縮小率との関係を示している。また第5
図は、本発明を適用した場合の総給縁厚さと耐圧値との
関係を、クラフト紙[
イルム23の巻き方にとくに制限はないが、高分子系無
孔性フィルム23は、突き合わせ構造とし、そして1層
巻きの交互配置とすることが望ましく、またコイル導体
の表面に接する第1層目は油含浸性絶縁抄紙である方が
よい。Figure 4 shows the relationship between the dielectric constant of the polymer nonporous film used and the reduction rate of the thickness of the insulating layer of the present invention when the thickness of the conventional insulating layer is multiplied by 100. There is. Also the fifth
The figure shows the relationship between the total edge thickness and the pressure resistance value when the present invention is applied, using kraft paper [There is no particular restriction on the way the film 23 is wrapped, but the polymer nonporous film 23 has a butted structure. , and it is preferable to have an alternating arrangement of single-layer windings, and the first layer in contact with the surface of the coil conductor is preferably made of oil-impregnated insulating paper.
さらに油含浸性絶縁抄紙22の材質としては、絶縁油と
してA種絶縁油を使用する場合にはクラフト紙が、また
耐熱性の高いシリコーン油を使用する場合には耐熱性の
高い芳香族ポリアミド紙が適している。また高分子系無
孔性フィルムとしては、耐圧値および耐熱性の良いポリ
エチレンテレフタレート等のフィルムが有利に使用でき
る。Furthermore, the material for the oil-impregnated insulating paper 22 is kraft paper when class A insulating oil is used as the insulating oil, and aromatic polyamide paper with high heat resistance when using silicone oil with high heat resistance. is suitable. Further, as the polymeric non-porous film, a film such as polyethylene terephthalate, which has good pressure resistance and heat resistance, can be advantageously used.
以上のようにこの発明によれば、コイル導体の周囲に、
油含浸性絶縁抄紙と高分子系無孔性フィルムとからなる
複合絶縁層を形成したので、個々の絶縁材料が有してい
る欠点が相互に補完され、すぐれた絶縁特性を有する絶
縁コイルが得られるという効果がある。As described above, according to the present invention, around the coil conductor,
By forming a composite insulating layer consisting of oil-impregnated insulating paper and nonporous polymeric film, the shortcomings of the individual insulating materials are mutually compensated for, resulting in an insulated coil with excellent insulating properties. It has the effect of being
第1図は従来の絶縁コイルの断面図、第2図はこの発明
の一実施例による絶縁コイルの断面図、第3図は第2図
の絶縁コイルの絶縁層の構成を示す説明図、第4図は高
分子系無孔性フィルムの誘電率と絶縁層の厚さの縮小率
との関係を示すグラ21・・・コイル導体、22・・・
油含浸性絶縁抄紙、23・・・高分子系無孔性フィルム
。
なお、図中同一符号は同−又は相当部分を示す。
代 理 人 葛 野 信 −(ほか1名)1、゛
(l)
弗 :5 団
猿、詑講眉厚)舒隔
手続補正書(自発)
■8和516月 4日
特許庁長官殿
■、事件の表示 特願昭56−208642 +
32、発明の名称
油入電気機器用絶縁コイル
3、補正をする者
圧制を100として」と補正する。
5、補正の対象
明細書の発明の詳細な説明の欄
6 補正の内容
+11明細1第2頁第16省に「導体12の周囲に」と
あるのを「導体11の周囲に」と補正する。
(2)明細1第4頁第5省に
[■
とあるのを
と補正する。
(3)明細1第5頁第2豹刀)ら第3杓に「油含浸性絶
縁抄紙の絶縁強度ねその厚さが亥化しても僕わら彦いの
で、」とあるのを削除する。
(4)明細1第6頁第4杓に「絶縁層の厚さを100と
して」とあるのを[絶縁層の厚さ1 mmでの耐(21FIG. 1 is a sectional view of a conventional insulated coil, FIG. 2 is a sectional view of an insulated coil according to an embodiment of the present invention, and FIG. 3 is an explanatory diagram showing the structure of the insulating layer of the insulated coil of FIG. Figure 4 shows the relationship between the dielectric constant of a polymeric non-porous film and the reduction rate of the thickness of the insulating layer.
Oil-impregnated insulating paper, 23...Polymer-based nonporous film. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Makoto Kuzuno - (and 1 other person) 1,゛(l) 弗: 5 Danzaru, Souko Meiatsu) Written amendment to the procedures for the separation (voluntary) ■June 4, 1985 Dear Commissioner of the Japan Patent Office■, Display of the incident Patent application 1986-208642 +
32. Name of the invention: Insulated coil for oil-filled electrical equipment 3. The person making the correction shall make the correction as 100. 5. Column 6 for detailed explanation of the invention in the specification to be amended Contents of the amendment + 11 Specification 1, page 2, section 16, amend "around the conductor 12" to "around the conductor 11" . (2) In the 5th section of page 4 of Specification 1, the statement [■ has been amended. (3) In Specification 1, page 5, No. 2, No. 3, the statement ``Even if the thickness of the oil-impregnated insulating paper increases, we will not worry about it.'' will be deleted. (4) In Specification 1, page 6, 4th ladle, there is a phrase "assuming the thickness of the insulating layer is 100".
Claims (1)
分子系無孔性フィルムとを交互に巻回することによって
形成した複合絶縁層を設けたことを特徴とする油入電気
機器用絶縁コイル。 (2)出を高分子系無孔性フィルムは突き合わせ構造を
有している特許請求の範囲第1項記載の油入電気機器用
絶縁コイル。 (3)=シ高分子系無孔性フィルムのみを1層巻きとし
た特許請求の範囲第1項または第2項記載の油入電気機
器用絶縁コイル。 (41オ=コイル導体の表面に接する第1層目が油。 含浸性絶縁抄紙である特許請求の範囲第1項〜第3項の
いずれかに記載の油入電気機器用絶縁コイル0 (5)使用される絶縁油がA種絶縁油である場合におい
て、≠≠油含浸性絶縁抄紙がクラフト紙であり、↓針高
分子系無孔性フィルムがポリエチレンテレフタレートフ
ィルムである特許請求の範囲第1項〜第4項のいずれか
に記載の油入電気機器用絶縁コイル。 (6)使用される絶縁油がシリコーン油である場合にお
いて、−社配一油含浸絶縁抄紙が芳香族ポリアミド紙で
あり、i勃高分子系無孔性フィルムがポリエチレンテレ
フタレートフィルムである特許請求の範囲第1項〜第5
項のいずれかに記載の油入電気機器用絶縁コイル。[Claims] (1) A composite insulating layer formed by alternately winding oil-impregnated insulating paper and a non-porous polymer film is provided around the coil conductor. Insulated coil for oil-filled electrical equipment. (2) The insulated coil for oil-filled electrical equipment according to claim 1, wherein the non-porous polymeric film has a butted structure. (3)=An insulated coil for oil-filled electrical equipment according to claim 1 or 2, in which only one layer of polymer-based nonporous film is wound. (41 O = The first layer in contact with the surface of the coil conductor is oil. The insulated coil for oil-filled electrical equipment according to any one of claims 1 to 3, which is made of impregnated insulating paper. ) When the insulating oil used is Class A insulating oil, ≠≠ the oil-impregnated insulating paper is kraft paper, and the ↓ needle polymer-based nonporous film is polyethylene terephthalate film. Claim 1 The insulating coil for oil-filled electrical equipment according to any one of Items to Item 4. (6) In the case where the insulating oil used is silicone oil, - the oil-impregnated insulating paper is aromatic polyamide paper; , Claims 1 to 5, wherein the i-erect polymer nonporous film is a polyethylene terephthalate film.
An insulated coil for oil-filled electrical equipment as described in any of the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20864281A JPS58108727A (en) | 1981-12-22 | 1981-12-22 | Insulating coil for oil-filled electric apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20864281A JPS58108727A (en) | 1981-12-22 | 1981-12-22 | Insulating coil for oil-filled electric apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58108727A true JPS58108727A (en) | 1983-06-28 |
JPH0324049B2 JPH0324049B2 (en) | 1991-04-02 |
Family
ID=16559617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20864281A Granted JPS58108727A (en) | 1981-12-22 | 1981-12-22 | Insulating coil for oil-filled electric apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58108727A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5410079U (en) * | 1977-06-24 | 1979-01-23 | ||
JPS5473269A (en) * | 1977-11-25 | 1979-06-12 | Tokyo Shibaura Electric Co | Multiplex winding coil |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE7503574L (en) * | 1974-04-01 | 1975-10-02 | Girling Ltd |
-
1981
- 1981-12-22 JP JP20864281A patent/JPS58108727A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5410079U (en) * | 1977-06-24 | 1979-01-23 | ||
JPS5473269A (en) * | 1977-11-25 | 1979-06-12 | Tokyo Shibaura Electric Co | Multiplex winding coil |
Also Published As
Publication number | Publication date |
---|---|
JPH0324049B2 (en) | 1991-04-02 |
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