JPS61168810A - Aerial insulated wire - Google Patents
Aerial insulated wireInfo
- Publication number
- JPS61168810A JPS61168810A JP60009746A JP974685A JPS61168810A JP S61168810 A JPS61168810 A JP S61168810A JP 60009746 A JP60009746 A JP 60009746A JP 974685 A JP974685 A JP 974685A JP S61168810 A JPS61168810 A JP S61168810A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- layer
- iron
- nickel alloy
- insulated wire
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は硬銅線の撚線を導体とし、その上にプラスチッ
ク絶縁層を具えた架空配電用絶縁電線の改良に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement in an insulated wire for overhead power distribution, which has a stranded hard copper wire as a conductor and has a plastic insulation layer thereon.
（従来技術及び解決しようとする問題点）硬銅線の撚線
を導体とし、その上にポリ塩化ビニル、ポリエチレン、
架橋ポリエチレンの如きプラスチック絶縁層を具えた架
空配電用絶縁電線は、端末引留部等から絶縁層内部に侵
入した水が原因で、導体の硬銅線に応力腐食破れが生じ
断線に至ることがよく知られている。いわゆる架空絶＆
を電線の異常断線現象である。(Prior art and problem to be solved) Twisted hard copper wire is used as a conductor, and polyvinyl chloride, polyethylene,
Insulated wires for overhead power distribution that are equipped with a plastic insulation layer such as cross-linked polyethylene often suffer from stress corrosion and breakage in the hard copper conductor wire due to water entering the insulation layer from the terminal anchorage, etc., resulting in disconnection. Are known. The so-called fictional &
This is an abnormal wire disconnection phenomenon.
このような異常断線現象を防止するため撚線導体の隙間
にフンパウンドを充填した水密型架空絶縁電線も採用さ
れているがコストが高いという欠点がある。In order to prevent such abnormal disconnection phenomena, watertight overhead insulated wires in which the gaps between the stranded wire conductors are filled with powder have also been adopted, but they have the drawback of high cost.
（問題点を解決するための手段）
本発明は上述の問題点を解消した改良された架空絶縁電
線を提供するもので、その特徴は中心に防食被覆層を有
する線膨張係数が銅の１／３以下の鉄−ニッケル合金線
を配置し、その周囲に硬銅線の燃線層、さらにその外周
上にプラスチック絶縁層を設けて成るものである。(Means for Solving the Problems) The present invention provides an improved overhead insulated wire that solves the above-mentioned problems.The present invention is characterized by having an anti-corrosion coating layer in the center and having a coefficient of linear expansion that is 1/1 that of copper. The iron-nickel alloy wire having a diameter of 3 or less is arranged, and a hard copper wire layer is provided around the wire, and a plastic insulating layer is further provided on the outer periphery of the wire.
（実施例）
第１図は本発明に係る架空絶縁電線の実施例の横断面図
を示す。図面において、（１）は中心に配置された外周
に防食被覆層■を持った鉄−ニツケル合金線で、少くと
もその線膨張係数が銅の１／３以下のものであり、特に
通常インバー線と呼ばれる鉄−３６％ニッケル合金線で
線膨張係数が銅の１７５程度のものが好ましい。又防食
被覆層■は熱硬化性樹脂を塗布焼付するか、プラスチッ
クを押出し被覆して形成される。(Embodiment) FIG. 1 shows a cross-sectional view of an embodiment of an overhead insulated wire according to the present invention. In the drawing, (1) is an iron-nickel alloy wire with an anti-corrosion coating layer on the outer periphery placed in the center, and its coefficient of linear expansion is at least 1/3 that of copper, and in particular, it is a normal invar wire. It is preferable to use an iron-36% nickel alloy wire called 36% iron alloy wire, which has a coefficient of linear expansion of about 175 that of copper. The anti-corrosion coating layer (2) is formed by coating and baking a thermosetting resin or by extruding a plastic.
上記、中心に配置された防食被覆層■を宵する鉄−ニッ
ケル合金線（１）の外周には硬銅線（３）を撚合せた撚
線層が設けられており、さらにその上にはポリ塩化ビニ
ル、ポリエチレン、架橋ポリエチレン等のプラスチック
絶縁層（４が設けられている。Above, on the outer periphery of the iron-nickel alloy wire (1) with the anti-corrosion coating layer (1) placed in the center, a stranded wire layer made of hard copper wires (3) is provided, and on top of that A plastic insulation layer (4) made of polyvinyl chloride, polyethylene, cross-linked polyethylene, etc. is provided.
（発明の効果）
上述した本発明の架空絶縁電線によれば、高強度（破断
強度１５０ ｋｇ／ｍ■１程度）の防食被覆層を有する
鉄−ニッケル合金線を中心に配置し、その周囲に硬銅線
の撚線層を設けているので、硬銅線の応力分担が大幅に
軽減され、硬銅線の応力腐食断線を防止することができ
る。(Effects of the Invention) According to the above-described overhead insulated wire of the present invention, an iron-nickel alloy wire having a high-strength (breaking strength of about 150 kg/m 1) anti-corrosion coating layer is arranged at the center, and around the Since the stranded wire layer of hard copper wire is provided, the stress distribution of the hard copper wire is significantly reduced, and stress corrosion breakage of the hard copper wire can be prevented.
又鉄−ニッケル合金線は熱膨張係数が銅に比して極めて
小さいので、合成熱膨張係数が著しく小さくなり、通電
又は温度上昇による弛度増加が大幅に小さくなるので低
弛度架線が可能となる等の利点を有する。In addition, iron-nickel alloy wire has an extremely small coefficient of thermal expansion compared to copper, so the composite coefficient of thermal expansion is significantly smaller, and the increase in sag due to energization or temperature rise is significantly smaller, making it possible to create low-sag overhead wires. It has advantages such as:
第１図は本発明に係る架空絶縁電線の実施例の横断面図
を示す。
１・・・鉄−ニッケル合金線、２・・・防食被覆層、３
・・・硬銅線、４・・・プラスチック絶縁層。FIG. 1 shows a cross-sectional view of an embodiment of an overhead insulated wire according to the present invention. 1... Iron-nickel alloy wire, 2... Anticorrosion coating layer, 3
...Hard copper wire, 4...Plastic insulation layer.
Claims (2)
３以下の鉄−ニッケル合金線を配置し、その周囲に硬銅
線の撚線層、さらにその外周上にプラスチック絶縁層を
設けて成ることを特徴とする架空絶縁電線。(1) Coefficient of linear expansion with anti-corrosion coating layer in the center is 1/1 that of copper.
1. An overhead insulated wire, characterized in that an iron-nickel alloy wire of 3 or less is arranged, a stranded layer of hard copper wire is provided around the stranded wire layer, and a plastic insulating layer is further provided on the outer periphery of the stranded wire layer.
合金であることを特徴とする特許請求の範囲第１項記載
の架空絶縁電線。(2) The overhead insulated wire according to claim 1, wherein the central iron-nickel alloy wire is made of an iron-36% nickel alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60009746A JPS61168810A (en) | 1985-01-21 | 1985-01-21 | Aerial insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60009746A JPS61168810A (en) | 1985-01-21 | 1985-01-21 | Aerial insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61168810A true JPS61168810A (en) | 1986-07-30 |
Family
ID=11728868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60009746A Pending JPS61168810A (en) | 1985-01-21 | 1985-01-21 | Aerial insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61168810A (en) |
-
1985
- 1985-01-21 JP JP60009746A patent/JPS61168810A/en active Pending
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