JPS63266710A - Insulated conductor - Google Patents
Insulated conductorInfo
- Publication number
- JPS63266710A JPS63266710A JP10108387A JP10108387A JPS63266710A JP S63266710 A JPS63266710 A JP S63266710A JP 10108387 A JP10108387 A JP 10108387A JP 10108387 A JP10108387 A JP 10108387A JP S63266710 A JPS63266710 A JP S63266710A
- Authority
- JP
- Japan
- Prior art keywords
- insulating layer
- polyethylene terephthalate
- water content
- terephthalate film
- conductor
- 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
- 239000004020 conductor Substances 0.000 title claims abstract description 24
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 18
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 17
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000012229 microporous material Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 abstract description 4
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、ポリエチレンテレフタレート等の高分子材料
からなる絶縁層を備えた絶縁導体に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an insulated conductor provided with an insulating layer made of a polymeric material such as polyethylene terephthalate.
（従来の技術）
電気機器例えば変圧器においては、軽量化、小形化を図
るためリード線若しくは巻線に用いられる絶縁導体の絶
縁層として高分子材料たるプラスチックフィルムからな
る絶縁層が使用されている。特にガス絶縁変圧器におい
ては、薄くて機械的強度が強く且つ絶縁耐力が優れ比較
的安価なことから、プラスチックフィルムのなかでもポ
リエチレンテレフタレートフィルムが多く使用されてい
る。然しながら、上述のポリエチレンテレフタレートフ
ィルムは加水分解により機械的強度が劣化する特性があ
る。そこで従来では、特開昭５９−２２７１１０で開示
されたように、ポリエチレンテレフタレートフィルムか
らなる絶縁層の外周囲に、ポリエチレンテレフタレート
フィルムの透湿度よりも小さい透湿度を有する樹脂フィ
ルムからなる外側絶縁層を形成し、変圧器内の絶縁ガス
に含まれる水分がポリエチレンテレフタレートフィルム
に接触しないようにしている。(Prior Art) In electrical equipment such as transformers, an insulating layer made of a plastic film made of a polymeric material is used as an insulating layer of an insulated conductor used for lead wires or windings in order to reduce weight and size. . Particularly in gas insulated transformers, polyethylene terephthalate film is often used among plastic films because it is thin, has strong mechanical strength, excellent dielectric strength, and is relatively inexpensive. However, the above-mentioned polyethylene terephthalate film has a characteristic that its mechanical strength deteriorates due to hydrolysis. Therefore, conventionally, as disclosed in JP-A-59-227110, an outer insulating layer made of a resin film having a water vapor permeability lower than that of the polyethylene terephthalate film was provided around the outer periphery of an insulating layer made of a polyethylene terephthalate film. This prevents moisture contained in the insulating gas inside the transformer from coming into contact with the polyethylene terephthalate film.
（発明が解決しようとする問題点）
ところで、絶縁導体の製造時においては、ポリエチレン
テレフタレートフィルムに周囲の水分が微量ながら吸若
することは避けられないので、乾燥工程において水分を
蒸発させるのが一般的である。然しながら、上述の従来
構成では、ポリエチレンテレフタレートフィルムに吸着
された水分が、乾燥工程で蒸発しても、この水蒸気が樹
脂フィルムからなる外側絶縁層を透過して外部に放散さ
れ難く外側絶縁層内に閉じ込められた状態となり、この
水分によってポリエチ、レンテレフタレートフィルムの
加水分解が進行して機械的強度が低下し、信頼性が劣る
という問題点があった。(Problem to be solved by the invention) By the way, when manufacturing insulated conductors, it is unavoidable that the polyethylene terephthalate film absorbs a small amount of moisture from the surrounding area, so it is common to evaporate the moisture in the drying process. It is true. However, in the above-mentioned conventional structure, even if the moisture adsorbed on the polyethylene terephthalate film evaporates during the drying process, it is difficult for this water vapor to pass through the outer insulating layer made of a resin film and dissipate to the outside. This moisture causes the polyethylene or lenterephthalate film to undergo hydrolysis, resulting in a decrease in mechanical strength and poor reliability.
そこで本発明の目的は、ポリエチレンテレフタレートフ
ィルム等の高分子材料からなる絶縁層の水分との接触に
よる機械強度の低下を防止し得、信頼性を向上させ得る
絶縁導体を提供するにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an insulated conductor that can prevent a decrease in mechanical strength due to contact with moisture in an insulating layer made of a polymeric material such as a polyethylene terephthalate film, and can improve reliability.
［発明の構成］
（問題点を解決するための手段）
本発明の絶縁導体は、導体の外周囲にポリエチレンテレ
フタレート等の高分子材料からなる第１の絶縁層を形成
し、この第１の絶縁層の外周囲に水蒸気の透過を許容し
水液の透過を阻止する微少多孔質材料からなる第２の絶
縁層を形成したものである。[Structure of the Invention] (Means for Solving the Problems) The insulated conductor of the present invention includes a first insulating layer made of a polymer material such as polyethylene terephthalate formed around the outer periphery of the conductor, and a first insulating layer made of a polymeric material such as polyethylene terephthalate. A second insulating layer made of a microporous material that allows the permeation of water vapor and blocks the permeation of aqueous liquid is formed around the outer periphery of the layer.
（作用）
本発明の絶縁導体によれば、第１の絶縁層に吸着された
水分が蒸発した場合、この水蒸気が微少多孔質材料から
なる第２の絶縁層を通して外部へ放散されるようになり
、また、外部の水液は第２の絶縁層を透過しないので、
第１の絶縁層に接触する水分をなくし得る。(Function) According to the insulated conductor of the present invention, when moisture adsorbed on the first insulating layer evaporates, this water vapor is dissipated to the outside through the second insulating layer made of a microporous material. , Also, since the external aqueous liquid does not pass through the second insulating layer,
Moisture contacting the first insulating layer can be eliminated.
（実施例）
以下、本発明の一実施例につき第１図及び第２図を参照
して説明する。(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2.
第２図は電気機器たるガス絶縁変圧器を示すものである
。即ち、１はタンクであり、その内部には三脚形の鉄心
２の各脚部に巻線３を巻装してなる変圧器中身４が収納
されている。そして、タンク１内には絶縁ガス５が封入
されている。６はタンク１の上壁に取付けられたブッシ
ングであり、その各中心導体は各巻線３にリード線７に
より接続されている。８は巻線３相互間を接続するリー
ド線である。FIG. 2 shows a gas insulated transformer which is an electrical device. That is, 1 is a tank, and inside thereof is housed a transformer contents 4 consisting of a winding 3 wound around each leg of a tripod-shaped iron core 2. An insulating gas 5 is sealed in the tank 1. A bushing 6 is attached to the upper wall of the tank 1, and each center conductor of the bushing is connected to each winding 3 by a lead wire 7. 8 is a lead wire that connects the windings 3 to each other.
而して、上述したようなリード線７，８は第１図に示す
如き絶縁導体９によって形成されている。The lead wires 7 and 8 as described above are formed of insulated conductors 9 as shown in FIG.
以下、この絶縁導体９について述べる。This insulated conductor 9 will be described below.
１０は断面矩形状をなす導体、１１は導体１０の外周囲
に形成さ塾た第１の絶縁層で、これは高分子材料たるポ
リエチレンテレフタレートフィルムを巻回して構成され
ている。１２は第１の絶縁層１１の外周囲に形成された
第２の絶縁層で、これはフッ化樹脂系或いはナイロン樹
脂系の微少多孔質材料（例えば商品名：ボアテックス）
を巻回して構成されており、水蒸気（気体）の透過を許
容し水（液体）の透過を阻止するようになっている。10 is a conductor having a rectangular cross section, and 11 is a first insulating layer formed around the outer periphery of the conductor 10, which is constructed by winding a polyethylene terephthalate film, which is a polymeric material. Reference numeral 12 denotes a second insulating layer formed around the outer periphery of the first insulating layer 11, which is made of a microporous material such as fluoride resin or nylon resin (for example, trade name: Voretex).
It is configured by winding a material into a material that allows water vapor (gas) to pass through and blocks water (liquid) from passing through.
次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
第１の絶縁層１１に吸着された水分は、絶縁導体９若し
くは変圧器中身４の乾燥工程において気化して水蒸気と
なる。この水蒸気は第２の絶縁層１２を透過して外部へ
放出される。一方、絶縁ガス５に含まれる水分は、第２
の絶縁層１２により透過を阻止され、第１の絶縁層１１
側へ浸透されることがない。The moisture adsorbed on the first insulating layer 11 evaporates into water vapor during the drying process of the insulated conductor 9 or the transformer contents 4. This water vapor passes through the second insulating layer 12 and is released to the outside. On the other hand, the moisture contained in the insulating gas 5
Transmission is blocked by the first insulating layer 12, and the first insulating layer 11
It is not penetrated to the side.
上記実施例によれば、つぎの効果を奏することができる
。即ち、第１の絶縁層１１に吸着された水分は、乾燥工
程において第２の絶縁層１２を透過して全て外部へ放出
され、従来とは異なり第２の絶縁層１２内に閉じ込めら
れた状態とはならない。また、外部の水液は第２の絶縁
層１２によって阻止されて第１の絶縁層１１側へ透過し
ない。According to the above embodiment, the following effects can be achieved. That is, the moisture adsorbed on the first insulating layer 11 passes through the second insulating layer 12 in the drying process and is all released to the outside, and unlike the conventional method, the moisture is confined within the second insulating layer 12. It is not. Furthermore, external aqueous liquid is blocked by the second insulating layer 12 and does not pass through to the first insulating layer 11 side.
これにより、第１の絶縁層１１に接触する水分はなくな
り、第１の絶縁層１１を構成するポリエチレンテレフタ
レートフィルムに加水分解が発生することはなく、従っ
て、第１の絶縁層１１の機械的強度の低下を防止し得、
信頼性の向−１−を図ることができる。As a result, no moisture comes into contact with the first insulating layer 11, and no hydrolysis occurs in the polyethylene terephthalate film that constitutes the first insulating layer 11. Therefore, the mechanical strength of the first insulating layer 11 is reduced. can prevent a decline in
It is possible to improve reliability.
第３図は本発明の他の実施例を示すもので、」二足実施
例との相違は、断面矩形状の導体１に代えて撚り線の導
体１３を用いて絶縁導体１４を構成したもので、この実
施例にても同様の効果を奏するものである。FIG. 3 shows another embodiment of the present invention, which differs from the two-legged embodiment in that the insulated conductor 14 is constructed using a stranded conductor 13 instead of the conductor 1 having a rectangular cross section. This embodiment also provides similar effects.
尚、上記実施例は本発明をガス絶縁変圧器のリード線に
適用した場合であるが、巻線の索線に適用してもよいこ
とは勿論である。Although the above embodiment is a case in which the present invention is applied to a lead wire of a gas insulated transformer, it goes without saying that the present invention may also be applied to a cable wire of a winding wire.
［発明の効果］
以上の・説明から明らかなように本発明は、導体の外周
囲にポリエチレンテレフタレート等の高分子材料からな
る第１の絶縁層を形成し、この第１の絶縁層の外周囲に
水蒸気の透過を許容し水液の透過を阻市する微少多孔質
材料からなる第２の絶縁層を形成したので、第１の絶縁
層の水分との接触による機械的強度の低下を防止し得、
信頼性を向上させ得るという効果を奏する。[Effects of the Invention] As is clear from the above explanation, the present invention forms a first insulating layer made of a polymeric material such as polyethylene terephthalate around the outer periphery of a conductor, and A second insulating layer made of a microporous material that allows the permeation of water vapor and blocks the permeation of aqueous liquid is formed on the second insulating layer, which prevents the mechanical strength of the first insulating layer from decreasing due to contact with moisture. Gain,
This has the effect of improving reliability.
第１図及び第２図は本発明の一実施例を示すもので、第
１図は外観斜視図、第２図はガス絶縁変圧器の概略的縦
断面図であり、第３図は本発明の他の実施例を示す第１
図相当図である。
図中、９は絶縁導体、１０．１３は導体、１１は第１の
絶縁層、１２は第２の絶縁層、１４は絶縁導体を示す。
第１図1 and 2 show an embodiment of the present invention, in which FIG. 1 is an external perspective view, FIG. 2 is a schematic vertical sectional view of a gas insulated transformer, and FIG. 3 is a diagram showing an embodiment of the present invention. The first example shows another example of
It is a figure equivalent figure. In the figure, 9 is an insulated conductor, 10.13 is a conductor, 11 is a first insulating layer, 12 is a second insulating layer, and 14 is an insulated conductor. Figure 1
Claims (1)
テレフタレート等の高分子材料からなる第１の絶縁層と
、この第１の絶縁層の外周囲に形成され水蒸気の透過を
許容し水液の透過を阻止する微少多孔質材料からなる第
２の絶縁層とを具備してなる絶縁導体。1. A conductor, a first insulating layer formed around the outer periphery of the conductor and made of a polymeric material such as polyethylene terephthalate, and a first insulating layer formed around the outer periphery of the first insulating layer that allows water vapor to pass through and is a layer that allows water vapor to pass through. and a second insulating layer made of a microporous material that blocks transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10108387A JPS63266710A (en) | 1987-04-23 | 1987-04-23 | Insulated conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10108387A JPS63266710A (en) | 1987-04-23 | 1987-04-23 | Insulated conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63266710A true JPS63266710A (en) | 1988-11-02 |
Family
ID=14291204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10108387A Pending JPS63266710A (en) | 1987-04-23 | 1987-04-23 | Insulated conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63266710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915791A (en) * | 2012-11-01 | 2013-02-06 | 无锡统力电工有限公司 | Winding wire for SF6 gas insulated transformer |
-
1987
- 1987-04-23 JP JP10108387A patent/JPS63266710A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915791A (en) * | 2012-11-01 | 2013-02-06 | 无锡统力电工有限公司 | Winding wire for SF6 gas insulated transformer |
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