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JPS6332206B2 - - Google Patents
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JPS6332206B2 - - Google Patents

Info

Publication number
JPS6332206B2
JPS6332206B2 JP7807981A JP7807981A JPS6332206B2 JP S6332206 B2 JPS6332206 B2 JP S6332206B2 JP 7807981 A JP7807981 A JP 7807981A JP 7807981 A JP7807981 A JP 7807981A JP S6332206 B2 JPS6332206 B2 JP S6332206B2
Authority
JP
Japan
Prior art keywords
winding
insulating layer
gas
plastic tape
tape
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.)
Expired
Application number
JP7807981A
Other languages
Japanese (ja)
Other versions
JPS57193008A (en
Inventor
Shigeru Amano
Junji Senoo
Yasuyuki Narisawa
Takao Tsuboi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Cable Works Ltd
Original Assignee
Fujikura Cable Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujikura Cable Works Ltd filed Critical Fujikura Cable Works Ltd
Priority to JP7807981A priority Critical patent/JPS57193008A/en
Publication of JPS57193008A publication Critical patent/JPS57193008A/en
Publication of JPS6332206B2 publication Critical patent/JPS6332206B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils
    • H01F5/06Insulation of windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulated Conductors (AREA)
  • Insulating Bodies (AREA)

Description

【発明の詳細な説明】 本発明は、超高電圧用のガス絶縁電気機器に使
用される巻線に関する。 一般にガス絶縁電気機器に使用される巻線はガ
ス絶縁用巻線と呼ばれているが、従来のこの種の
巻線は導体上に絶縁性の例えば天然繊維紙やプラ
スチツクテープ等を所望枚巻回したものが多く、
なかでも近年ではプラスチツクテープを使用した
ものが多くをしめるにいたつている。 プラスチツクテープを使用した巻線は、絶縁層
がプラスチツクであるから、誘電率が低いという
利点を有する。しかしながら、従来の通常のプラ
スチツクテープを使用したものでは、そのテープ
から予測される耐電圧のあるものを得ることがで
きなかつた。 本発明は、上記の点に鑑みてなされたもので、
絶縁破壊電圧の高いガス絶縁用巻線や超高圧ガス
絶縁用巻線の提供を目的とする。 上記目的は導体上にプラスチツクテープの巻回
によつて形成される絶縁層を有するガス絶縁用巻
線において、前記プラスチツクテープとしてその
片面又は両面に微細な凹凸を有するものを用いる
ことにより達成される。 以下図面を参照して本発明を詳細に説明する。 第1図は、本発明のガス絶縁用巻線の断面図で
あつて、導体1の外側には絶縁層2が設けられて
いる。導体1は、通常銅、アルミニウム又はこれ
らを基にした合金で、断面形状、円形、矩形等に
作られた線、条、帯状物であるが、用途、機能に
よつて適宜変更し得る。絶縁層2は導体1外側に
1又は2以上のプラスチツクテープを巻回して形
成されたものである。ここで使用されるプラスチ
ツクテープは誘電率(ε)や誘電正接(tanδ)が
小さく、耐電圧の大きいプラスチツク材料をカレ
ンダ法、インフレーシヨン法等公知の適当な方法
により厚さ0.010〜0.30mmのシート状或はテープ
状に作られたものであつてよいが、少なくともそ
の片面又は両面には微細な凹凸が設けられていな
ければならない。 本発明において、プラスチツクテープの表面に
施された凹凸は、ガス絶縁用巻線の耐電圧に大き
な影響を与える。第2図は凹凸の大きさと絶縁破
壊電圧との関係を示したものであるが、凹凸が
0.03mmより大きくなると耐電圧は急激に低下し、
また0.0003mmよりも小さくなつても耐電圧が低下
する。以上から、プラスチツクテープの表面に設
ける凹凸は0.0003mmから0.03mmの範囲におさえる
べきものである。 プラスチツクテープの表面に凹凸に付与する方
法は、特に限定されるものではないが、エンボス
加工、サンドブラスト加工等の表面加工であつて
もよいし、或は一旦不織布状にしたプラスチツク
材料をスーパーカレンダ法によりテープ状に作る
方法であつてもよい。 本発明の巻線の絶縁テープの材質としては、例
えばポリエチレン、ポリプロピレン、トリメチル
ペンテン、ポリアミド、ポリエステル、ポリスル
フオン、ふつ化樹脂或は前記プラスチツクを基材
とする共重合物や混合重合物を掲げることができ
るが、これらに限定されるものではなく、入手し
得る樹脂のうちから用途、要求特性に応じ適宜選
定使用すればよい。 表面に微細な凹凸を施したプラスチツクテープ
を巻回して形成し導体外側に設けた本発明に係る
巻線の絶縁層は、以下に述べる実施例からも明ら
かなように優れた耐電圧特性を有する。 なお、本発明に係る巻線の絶縁層が優れた耐電
圧特性をもたらす理由の1つは、プラスチツクテ
ープ表面に設けられた凹凸が絶縁層内に微細な通
気路を形成し、絶縁ガス充填に先だつコイルの脱
気乾燥の際には絶縁層の巻回テープ間に存在し、
耐電圧を低下させる原因となる水分(湿気)やそ
の他有害気体及び顕微鏡的じんあい等の微粒物の
排出を容易にしているものと推測される。 <実施例> 軟銅製の平角導体(縦4.5mm×横9.0mm)の外周
に、表面に大きさが0.001mm〜0.003mmの凹凸を施
したポリエステルテープ(厚さ0.05mm×巾15.0
mm)を10枚重なるように巻回して積層の絶縁層を
設けて巻線試料を得た。 この巻線試料(有効長200mm)を耐圧密閉容器
に収め、容器内を減圧(真空度0.05mmHg)し、
温度110℃に保ちながら16時間かけて真空乾燥を
行ない、この後絶縁性ガスを封入し、ガス圧が5
Kg/cm2Gにして24時間放置し、続いて負インパル
ス破壊電圧を測定したところ、第1表の結果を得
た。 なお、比較のため、表面に凹凸のない従来の通
常のポリエステルテープを用いた比較試料を作成
し、同様の測定を行なつた。また大気中における
負インパルス破壊電圧測定も行ない第1表に併記
した。 【表】
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to windings used in gas-insulated electrical equipment for ultra-high voltages. Winding wires used in gas-insulated electrical equipment are generally called gas-insulated winding wires, and conventional winding wires of this type are made by wrapping a desired amount of insulating material such as natural fiber paper or plastic tape on the conductor. There are many things that have been turned,
In recent years, plastic tape has become increasingly popular. Windings using plastic tape have the advantage of a low dielectric constant since the insulating layer is plastic. However, when conventional plastic tape is used, it has not been possible to obtain the expected withstand voltage from the tape. The present invention has been made in view of the above points, and
The purpose is to provide gas insulated windings with high dielectric breakdown voltage and ultra-high pressure gas insulated windings. The above object is achieved by using a gas insulated winding wire having an insulating layer formed by winding a plastic tape on a conductor, which has fine irregularities on one or both sides of the plastic tape. . The present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view of a gas insulated winding according to the present invention, in which an insulating layer 2 is provided on the outside of a conductor 1. The conductor 1 is usually made of copper, aluminum, or an alloy based on these, and is a wire, strip, or band shaped object having a circular or rectangular cross-sectional shape, but may be modified as appropriate depending on the purpose and function. The insulating layer 2 is formed by wrapping one or more plastic tapes around the outside of the conductor 1. The plastic tape used here is made of a plastic material with a small dielectric constant (ε) and dielectric loss tangent (tan δ) and a high withstand voltage, and is made into a material with a thickness of 0.010 to 0.30 mm by a known appropriate method such as a calendering method or an inflation method. It may be made in the form of a sheet or tape, but it must have minute irregularities on at least one or both sides thereof. In the present invention, the unevenness formed on the surface of the plastic tape has a large effect on the withstand voltage of the gas insulating winding. Figure 2 shows the relationship between the size of unevenness and dielectric breakdown voltage.
When it becomes larger than 0.03mm, the withstand voltage decreases rapidly.
Also, if the thickness is smaller than 0.0003 mm, the withstand voltage will decrease. From the above, the unevenness provided on the surface of the plastic tape should be kept within the range of 0.0003 mm to 0.03 mm. The method of imparting irregularities to the surface of the plastic tape is not particularly limited, but may be surface treatments such as embossing or sandblasting, or super calendering of the plastic material once made into a non-woven fabric. Alternatively, it may be made into a tape shape. Examples of the material for the insulating tape of the winding of the present invention include polyethylene, polypropylene, trimethylpentene, polyamide, polyester, polysulfone, fluorinated resin, and copolymers and mixed polymers based on the above-mentioned plastics. However, the resins are not limited to these, and may be appropriately selected from available resins depending on the purpose and required characteristics. The insulating layer of the winding wire according to the present invention, which is formed by winding a plastic tape with fine irregularities on the surface and provided on the outside of the conductor, has excellent withstand voltage characteristics as is clear from the examples described below. . One of the reasons why the insulating layer of the winding wire according to the present invention has excellent withstand voltage characteristics is that the unevenness provided on the surface of the plastic tape forms fine ventilation paths within the insulating layer, making it easier to fill with insulating gas. When the coil is first degassed and dried, it is present between the winding tapes of the insulating layer.
It is presumed that this facilitates the discharge of moisture (humidity), other harmful gases, and microscopic dust and other fine particles that cause a decrease in withstand voltage. <Example> Polyester tape (thickness 0.05 mm x width 15.0
A wire sample was obtained by winding 10 sheets (mm) so that they overlapped and providing a laminated insulating layer. This winding sample (effective length 200 mm) was placed in a pressure-tight airtight container, and the pressure inside the container was reduced (vacuum degree 0.05 mmHg).
Vacuum drying is carried out for 16 hours while maintaining the temperature at 110℃, after which insulating gas is filled and the gas pressure is increased to 5.
Kg/cm 2 G and left for 24 hours, and then the negative impulse breakdown voltage was measured, and the results shown in Table 1 were obtained. For comparison, a comparative sample was prepared using a conventional polyester tape with no irregularities on its surface, and the same measurements were conducted. In addition, negative impulse breakdown voltage measurements in the atmosphere were also conducted and are also listed in Table 1. 【table】

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

第1図は本発明に係るガス絶縁用巻線の断面
図、第2図はガス絶縁用巻線の絶縁層に用いるプ
ラスチツクテープの表面に施す凹凸の大きさとそ
の絶縁層のインパルス破壊電圧(Imp.E.D.V)と
の関係を表わしたグラフである。 1……導体、2……絶縁層。
Fig. 1 is a sectional view of a gas insulating winding according to the present invention, and Fig. 2 shows the size of the unevenness applied to the surface of the plastic tape used as the insulating layer of the gas insulating winding and the impulse breakdown voltage (Imp) of the insulating layer. This is a graph showing the relationship with .EDV). 1...Conductor, 2...Insulating layer.

Claims (1)

【特許請求の範囲】 1 導体の外側に、片面又は両面に微細な凹凸を
有するプラスチツクテープを1層又は多層巻回し
て形成した絶縁層を有するガス絶縁用巻線。 2 表面の凹凸の大きさを0.0003〜0.03mmとした
プラスチツクテープで形成した絶縁層を有する特
許請求の範囲第1項記載のガス絶縁用巻線。
[Scope of Claims] 1. A gas insulating winding wire having an insulating layer formed by winding one or multiple layers of plastic tape having fine irregularities on one or both sides on the outside of a conductor. 2. The gas insulating winding wire according to claim 1, which has an insulating layer formed of a plastic tape with surface irregularities of 0.0003 to 0.03 mm.
JP7807981A 1981-05-25 1981-05-25 Winding for gas insulation Granted JPS57193008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7807981A JPS57193008A (en) 1981-05-25 1981-05-25 Winding for gas insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7807981A JPS57193008A (en) 1981-05-25 1981-05-25 Winding for gas insulation

Publications (2)

Publication Number Publication Date
JPS57193008A JPS57193008A (en) 1982-11-27
JPS6332206B2 true JPS6332206B2 (en) 1988-06-29

Family

ID=13651832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7807981A Granted JPS57193008A (en) 1981-05-25 1981-05-25 Winding for gas insulation

Country Status (1)

Country Link
JP (1) JPS57193008A (en)

Also Published As

Publication number Publication date
JPS57193008A (en) 1982-11-27

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