JPS62196052A - Manufacture of electrical insulated coil - Google Patents
Manufacture of electrical insulated coilInfo
- Publication number
- JPS62196052A JPS62196052A JP3507486A JP3507486A JPS62196052A JP S62196052 A JPS62196052 A JP S62196052A JP 3507486 A JP3507486 A JP 3507486A JP 3507486 A JP3507486 A JP 3507486A JP S62196052 A JPS62196052 A JP S62196052A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- heat
- insulating layer
- shrinkable
- winding
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229920005989 resin Polymers 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 44
- 229920001721 polyimide Polymers 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 16
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 22
- 230000002265 prevention Effects 0.000 claims description 14
- 238000005470 impregnation Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- 239000004020 conductor Substances 0.000 abstract description 6
- 239000010445 mica Substances 0.000 abstract description 5
- 229910052618 mica group Inorganic materials 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 229920006257 Heat-shrinkable film Polymers 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000003449 preventive effect Effects 0.000 abstract 3
- 238000009413 insulation Methods 0.000 description 13
- 239000004760 aramid Substances 0.000 description 9
- 229920003235 aromatic polyamide Polymers 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 239000002654 heat shrinkable material Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- LTVUCOSIZFEASK-MPXCPUAZSA-N (3ar,4s,7r,7as)-3a-methyl-3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione Chemical compound C([C@H]1C=C2)[C@H]2[C@H]2[C@]1(C)C(=O)OC2=O LTVUCOSIZFEASK-MPXCPUAZSA-N 0.000 description 1
- YSUQLAYJZDEMOT-UHFFFAOYSA-N 2-(butoxymethyl)oxirane Chemical compound CCCCOCC1CO1 YSUQLAYJZDEMOT-UHFFFAOYSA-N 0.000 description 1
- XBIUWALDKXACEA-UHFFFAOYSA-N 3-[bis(2,4-dioxopentan-3-yl)alumanyl]pentane-2,4-dione Chemical compound CC(=O)C(C(C)=O)[Al](C(C(C)=O)C(C)=O)C(C(C)=O)C(C)=O XBIUWALDKXACEA-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920001646 UPILEX Polymers 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は樹脂保持性に優れ、■（種絶縁として使用でき
る電気絶縁線輪の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing an electrically insulating coil that has excellent resin retention properties and can be used as seed insulation.
高電圧回転電機の絶縁線輪の製造方法としては真空加圧
含浸方式とレジンリッチ方式がある。鉄心に線輪を装着
したものに樹脂を含浸する全含浸方式では、含浸後の加
熱硬化工程で、せっかく含浸した樹脂が流出する恐れが
ある。絶ａ層中の樹脂が流出すると、高電圧絶縁線輪に
有害な空隙が形成される。従って、高電圧絶縁線輪にお
いては空隙の形成を防止することが不可欠である。これ
までいろいろと樹脂流出防止方法が考えられてきたが、
以下の様な欠点があり、とりわけＨ種絶縁に対しては、
その適用温度が高いため満足できる防止方法がなかった
。There are two methods for manufacturing insulated wire rings for high-voltage rotating electric machines: a vacuum pressure impregnation method and a resin-rich method. In the full impregnation method, in which a wire ring is attached to an iron core and is impregnated with resin, there is a risk that the impregnated resin may flow out during the heat curing process after impregnation. When the resin in the amorphous layer flows out, harmful voids are formed in the high voltage insulation coil. Therefore, it is essential to prevent the formation of voids in high voltage insulated coils. Various methods have been considered to prevent resin leakage, but
There are the following drawbacks, especially for H class insulation:
Due to its high application temperature, there has been no satisfactory prevention method.
樹脂流出防止策の一つに、絶縁層表面に熱収縮性ポリエ
チレンテレフタシー１〜フイルムを巻回し、加熱硬化時
の収縮力で成形する方法がある。しかしこのフィルムは
耐熱性が高々１５０℃以下で１８０℃迄のＨ種絶縁には
適用できない。また、熱収縮性アラミツド紙テープを巻
回するものは耐熱性はあるが、テープ自体が低粘度液状
樹脂を透過させるため流出防止効果がややうすれる欠点
がある。さらに、熱収縮性アラミツド紙テープはアラミ
ッドの繊維ではなくフィブリッド（パルプ状粒子）を原
料としているため引張り強度が弱く、大きな巻付張力を
要する線輪のループなどで切断し易く巻付作業性が劣る
。One method for preventing resin leakage is to wrap a heat-shrinkable polyethylene terephthalate film around the surface of the insulating layer and mold it using the shrinkage force during heat curing. However, this film has a heat resistance of at most 150°C or less and cannot be applied to H type insulation up to 180°C. Furthermore, although heat-shrinkable aramid paper tapes are wound, they are heat resistant, but have the disadvantage that the tape itself allows low-viscosity liquid resin to pass through, so its leakage prevention effect is somewhat weakened. Furthermore, because heat-shrinkable aramid paper tape is made from fibrids (pulp-like particles) rather than aramid fibers, its tensile strength is low, and it is easy to break at wire loops, etc., which require large winding tension, resulting in poor winding workability. .
また、絶縁層にフェルトや不織布などの樹脂保持性の高
い材料を巻く方法もあるが、これらの材料の表面は毛羽
が出ているため、絶縁線輪を含浸後加熱すると、毛羽に
樹脂が付着したまま硬化し、見かけの線輪寸法が大きく
なり、隣接する線輪とのすき間がなくなる。従って機器
の冷却風がすき間を通ることができず電気機械の異常温
度上昇を招き重大事故につながる場合がある。Another method is to wrap the insulating layer with a material with high resin retention properties such as felt or non-woven fabric, but since the surface of these materials has fuzz, if the insulating wire is heated after being impregnated, resin will adhere to the fuzz. The wire hardens while remaining in place, the apparent size of the wire becomes larger, and there is no gap between adjacent wires. Therefore, the cooling air for the equipment cannot pass through the gap, causing an abnormal temperature rise in the electrical machine, which may lead to a serious accident.
また、レジンリッチ絶縁方式において、絶縁表面に熱収
縮材を巻いた線輪を鉄心に組み込んで加熱硬化する、き
わめて経済的な製造方式がある。Furthermore, in the resin-rich insulation method, there is an extremely economical manufacturing method in which a wire ring with a heat-shrinkable material wrapped around the insulation surface is assembled into an iron core and then heated and hardened.
しかし、適当なＨ種耐熱の熱収縮材がないため耐熱絶縁
では実用に到っていない。However, it has not been put into practical use as heat-resistant insulation because there is no suitable heat-shrinkable material with heat-resistant class H heat.
本発明は耐熱特性が低い絶縁にはもちろん、耐熱性Ｈ種
の絶縁にも適用できる、絶縁層の樹脂流出による空隙の
生じ雅い電気絶縁線輪の製造方法を提供することを目的
とする。It is an object of the present invention to provide a method for manufacturing an electrical insulating wire ring, which can be applied not only to insulation with low heat resistance properties but also to heat-resistant class H insulation, and which allows air gaps to be easily formed due to resin flow out of the insulating layer.
上記目的を達成するために本発明においては、真空加圧
含浸方式又はレジンリッチ方式による電気絶縁線輪の製
造方法において、未硬化の熱硬化性樹脂を後から含ませ
るか又は予じめ含ませた絶縁テープ巻回による絶縁層の
外側に、熱収縮性を有するポリイミドフィルムテープ又
はシートを車券に巻回した樹脂漏れ防止層を形成し、加
熱して前記樹脂漏れ防止層を収縮させると共に絶縁層内
の樹脂を硬化させる。In order to achieve the above object, in the present invention, in a method for manufacturing an electrically insulating wire ring using a vacuum pressure impregnation method or a resin rich method, an uncured thermosetting resin is added afterwards or pre-impregnated. A resin leak prevention layer is formed by winding a heat-shrinkable polyimide film tape or sheet around the ticket on the outside of the insulation layer formed by winding the insulation tape, and is heated to shrink the resin leak prevention layer and remove the insulation layer. Harden the resin inside.
本発明では、絶縁層の表面にＩｉ種耐熱性を有する熱収
縮性ポリイミドフィルムテープ又はシートを車券に巻回
する構成にしたので、絶縁層に含ませた熱硬化性樹脂を
硬化させるために加熱すると、前記テープ又はシートが
収縮して、樹脂の流出を防止し、空隙発生のない絶縁層
を形成し、Ｈ種絶縁線輸を製造することができる。In the present invention, a heat-shrinkable polyimide film tape or sheet having class II heat resistance is wound around the ticket on the surface of the insulating layer, so heat is applied to harden the thermosetting resin contained in the insulating layer. Then, the tape or sheet shrinks to prevent the resin from flowing out, form an insulating layer without voids, and manufacture an H-class insulated wire.
以下本発明を実施例１，２に基づいて詳細に説明する。 The present invention will be explained in detail below based on Examples 1 and 2.
まず１本発明に用いる熱収縮性ポリイミドフィルムテー
プの諸特性について述べる。未延伸のユーピレックスフ
ィルム（ポリイミドフィルムの宇部興産社の商品名）カ
タログ番号２０Ｒに２ｇ／１０ｍｍ幅の張力を加えて延
伸処理を施し、熱収縮性ポリイミドフィルム（厚さ０．
０２＋＋ｕｗ）を得た。このフィルムの材質はポリイミ
ド樹脂であるため、特に高温における物理的、機械的、
電気的、化学的諸性質は従来のポリエチレンテレフタレ
ートフィルムはもとよりアラミツド紙テープに比べ著し
く優れている。たとえば２０ 、０００時間加熱して引
張り強さの半減する温度が２７０℃と長時間の耐熱性が
著しく優れている。この熱収縮性ポリイミドフィルムを
１９ｍｍ幅のテープ状に切断したものについて各温度に
おける熱収縮率を測定した。測定方法は。First, various properties of the heat-shrinkable polyimide film tape used in the present invention will be described. An unstretched Upilex film (product name of polyimide film manufactured by Ube Industries, Ltd.) catalog number 20R was stretched under a tension of 2 g/10 mm width to form a heat-shrinkable polyimide film (thickness 0.5 mm).
02++uw) was obtained. Since the material of this film is polyimide resin, it is physically, mechanically, and
The electrical and chemical properties are significantly superior to conventional polyethylene terephthalate film as well as aramid paper tape. For example, after heating for 20,000 hours, the temperature at which the tensile strength is halved is 270°C, which shows that it has excellent long-term heat resistance. This heat-shrinkable polyimide film was cut into a tape shape with a width of 19 mm, and the heat shrinkage rate at each temperature was measured. How to measure?
フィルム表面に２００ｍｍ間隔の標点を書き、各温度で
４０分間加熱した後の標点間距雛の変化を求めて熱収縮
率とした。その結果を従来の熱収縮性アラミツド紙テー
プ（ＡティッシュＡＴＵ５０）日本アロマ社製）と対比
して第１表に示した。Gauge points were drawn at 200 mm intervals on the film surface, and the change in the distance between the gauges after heating at each temperature for 40 minutes was determined to be the heat shrinkage rate. The results are shown in Table 1 in comparison with a conventional heat-shrinkable aramid paper tape (A Tissue ATU50, manufactured by Nippon Aroma Co., Ltd.).
本発明に用いる熱収縮性ポリイミドフィルムは比較的低
温の約１００℃から収縮を始め、高温になるにつれて熱
収縮率が大きくなる。これに対して、従来の熱収縮性ア
ラミツド紙は約１５０℃の高温で収縮を始めるが、熱収
縮率は本発明の約１７２以下と小さい。また、引張り強
度は従来の熱収縮性アラミツド紙の約３ｋｇ／ｍｉ”に
対して、約２０ｋｇ／＋ｎｎ＋”とはるかに強い。絶縁
破壊電圧も熱収縮性アラミツド紙の３０ｋＶ／ｍｍに対
して、約２７０ｋＶ／ｍｍと大きい。従来の熱収縮性ア
ラミツド紙はいわゆる紙質のため密度も０．５１ｇ／ａ
Ｉ？ と低く、低粘度液状樹脂を透過しやすいが１本発
明の熱収縮性ポリイミドフィルムはフィルムなので全く
通さない。The heat-shrinkable polyimide film used in the present invention begins to shrink at a relatively low temperature of about 100° C., and the heat shrinkage rate increases as the temperature increases. In contrast, conventional heat-shrinkable aramid paper begins to shrink at a high temperature of about 150° C., but its heat shrinkage rate is as low as about 172 or lower than that of the present invention. In addition, the tensile strength is much higher at about 20 kg/+nn+'' compared to about 3 kg/mi'' for conventional heat-shrinkable aramid paper. The dielectric breakdown voltage is also large, about 270 kV/mm, compared to 30 kV/mm for heat-shrinkable aramid paper. Conventional heat-shrinkable aramid paper has a density of 0.51g/a due to its so-called paper quality.
I? Although the heat-shrinkable polyimide film of the present invention is a film, it does not pass through it at all.
実施例１
第１図に示すように線輪状に巻いた巻線導体（１）に接
着剤量の少ないいわゆるドライマイカテープ厚さ０．１
６ｍｍを１７２重巻で５回巻いて絶縁層（２）を形成す
る。その絶縁層（２）の表面に厚さ０．０２ｍｍの熱２
収縮性ポリイミドフイルムテープを１／２重巻で１回巻
いて樹脂漏れ防止層（３）を形成する。この線輪を複数
個鉄心に納め、所定の結線をし、結線部にも前記と同様
の絶縁層（２）および樹脂漏れ防止層（３）を設けて、
電気巻線を形成する。この巻線を鉄心ごと真空タンクに
入れ、エピコート８０７（シェル化学社商品名）４７重
量部、ブチルグリシジルエーテル８重量部、）ＩＮ２２
００（日立化成社商品名）４５重量部からなる熱硬化性
樹脂を真空加圧含浸した。その後、１５０℃で１５時間
加熱硬化して所望の電気絶縁巻線を得る。Example 1 As shown in Fig. 1, a so-called dry mica tape with a small amount of adhesive and a thickness of 0.1 was applied to a wire-wound conductor (1) wound into a ring shape.
An insulating layer (2) is formed by winding a 6 mm film 5 times with 172 turns. Heat 2 to a thickness of 0.02 mm on the surface of the insulating layer (2).
A resin leakage prevention layer (3) is formed by wrapping a shrinkable polyimide film tape once in a 1/2 fold. A plurality of these wire rings are housed in an iron core, and predetermined connections are made, and the same insulating layer (2) and resin leakage prevention layer (3) as described above are also provided at the connection part,
Form electrical windings. This winding wire was placed together with the iron core in a vacuum tank, and 47 parts by weight of Epicoat 807 (trade name of Shell Chemical Co., Ltd.), 8 parts by weight of butyl glycidyl ether, IN22
00 (trade name, Hitachi Chemical Co., Ltd.) 45 parts by weight of a thermosetting resin was impregnated under vacuum pressure. Thereafter, it is heated and cured at 150° C. for 15 hours to obtain a desired electrically insulating winding.
次に作用について説明する。樹脂漏れ防止層（３）を形
成する熱収縮性ポリイミドフィルムテープは厚さが０．
０２ｍｍと極薄であるが、引張り強さが約８ｋｇ／１９
＋＊ｍあり、伸びも１００％以上あるため、大きな張力
で巻付けることができ、絶縁層（２）によく密着する特
長がある。また、前記のように熱収縮性がきわめて大き
いので、含浸樹脂を硬化するための加熱工程で絶縁層（
２）を緻密に加圧成形すると同時に、熱収縮性フィルム
テープ間自身も密着し、しかもフィルム状のため含浸し
た樹脂は透過することがないので、樹脂の流出を防止し
空隙発生を防止する作用がある。また、熱収縮開始温度
が約１００℃と低いので、樹脂が低粘度化するとほぼ同
期しながら加圧力が働く。また、低温度で収縮するため
、Ｈ種はもちろん、Ｂ種やＦ種に広範囲の絶縁方式に適
用できる汎用性を′備えている。Next, the effect will be explained. The heat-shrinkable polyimide film tape forming the resin leakage prevention layer (3) has a thickness of 0.
Although it is extremely thin at 0.02 mm, its tensile strength is approximately 8 kg/19
+*m and has an elongation of 100% or more, so it can be wrapped with a large tension and has the advantage of adhering well to the insulating layer (2). In addition, as mentioned above, the heat shrinkability is extremely high, so the insulating layer (
At the same time as 2) is densely pressure-molded, the heat-shrinkable film tape also adheres closely to itself, and since it is film-like, the impregnated resin does not pass through, which prevents the resin from flowing out and creating voids. There is. Furthermore, since the temperature at which thermal contraction starts is as low as about 100° C., the pressing force acts almost synchronously with the decrease in the viscosity of the resin. In addition, since it contracts at low temperatures, it has the versatility to be applied to a wide range of insulation methods, including not only H type, but also B and F types.
このようにして得た電気絶縁線軸は絶縁破壊強さが２９
ｋＶ／ｍｍ以上と高く、また米国規格ＩＥＥＥ ｓｔｄ
。The electrically insulated wire shaft obtained in this way has a dielectric breakdown strength of 29
It is high at over kV/mm and also meets the American standard IEEE standard.
.
２７５に準じたモータレントによる耐熱寿命は１８０°
Ｃで１０万時間以上となり、Ｈ種耐熱を有していた。Heat resistance life is 180° due to motor talent according to 275.
It was 100,000 hours or more in C, and had H class heat resistance.
実施例２ 下記構成のプリプレグマイカテープを用意した。Example 2 A prepreg mica tape with the following configuration was prepared.
カプトンフィルム（デュポン社商品名）を裏打材とした
集成マイカシートにエピコート１５２（シェル化学社商
品名）３０重量部、エピコート１５４（シェル化学社商
品名）６０重量部、エピコート１００１（シェル化学社
商品名）１０重量部、無水メチルナジック酸無水物（日
本化薬社製）４８重量部、アルミニウムアセチルアセト
ナート（用研ファインケミカル社製）２重量部、シェフ
ニルジェトキシシラン（東芝シリコーン社製） ３重量
部を配合してなる耐熱樹脂を４５重量％含浸した。この
プリプレグマイカテープを導体に１７２重巻で所定数巻
回し絶縁層（２）を形成する。絶縁層の上に熱収縮性ポ
リイミドフィルムテープを１７２重巻で１回巻き、樹脂
漏れ防止層（３）を設ける。この線輪を鉄心に納め結線
部も前記と同様の絶縁層および樹脂漏れ防止層（３）を
設ける。鉄心全体を１５０℃で１５時間加熱して上記絶
縁層を硬化させるとともに熱収縮性ポリイミドフィルム
を収縮させて緻密な電気絶縁線軸を得る。Laminated mica sheet with Kapton film (product name of DuPont) as backing material, 30 parts by weight of Epikot 152 (product name of Shell Chemicals), 60 parts by weight of Epikot 154 (product name of Shell Chemicals), Epicoat 1001 (product of Shell Chemicals) 10 parts by weight of methylnadic anhydride (manufactured by Nippon Kayaku Co., Ltd.), 2 parts by weight of aluminum acetylacetonate (manufactured by Yoken Fine Chemicals Co., Ltd.), 3 parts by weight of shefnyl jetoxysilane (manufactured by Toshiba Silicone Co., Ltd.) It was impregnated with 45% by weight of a heat-resistant resin made by blending parts by weight. This pre-preg mica tape is wound around a conductor by a predetermined number of 172 turns to form an insulating layer (2). A heat-shrinkable polyimide film tape is wound once on the insulating layer with 172 turns to provide a resin leakage prevention layer (3). This wire ring is housed in an iron core, and the wire connection portion is also provided with an insulating layer and a resin leakage prevention layer (3) similar to those described above. The entire core is heated at 150° C. for 15 hours to harden the insulating layer and shrink the heat-shrinkable polyimide film to obtain a dense electrically insulated wire shaft.
この製造方法によれば、モールド装置等の設備なしに簡
単に、Ｈ種耐熱の絶縁線輪が得られる６熱収縮性ポリイ
ミドフイルムテープを巻いたことによる他の効果として
、線輪表面が平滑に仕上るため、機器の冷却風が通りや
すくなり、異常温度上昇を抑制できる。また、前記のよ
うに絶縁破壊電圧が極めて高いフィルムを用いているの
で絶縁耐力の向上にも寄与している。According to this manufacturing method, an insulated wire ring with class H heat resistance can be easily obtained without any equipment such as a molding device. 6 Another effect of wrapping the heat-shrinkable polyimide film tape is that the surface of the wire wire is smooth. This makes it easier for cooling air to pass through the equipment, thereby suppressing abnormal temperature rises. Furthermore, as mentioned above, since a film with an extremely high dielectric breakdown voltage is used, it also contributes to an improvement in dielectric strength.
以上説明した様に、本発明によれば、巻線導体表面に絶
縁層を形成し、その表面に熱収縮性を有するポリイミド
フィルムテープを重ね巻きして樹脂漏れ防止層を形成し
たことにより、絶縁層に熱硬化性樹脂を含浸し、その後
加熱硬化する時、樹脂漏れ防止層を収縮して絶縁Ｘりを
密に加圧成形すると同時に樹脂の流出を防ぐことができ
る。したがって硬化絶縁層に有害な空隙を生ぜず、信頼
性が高く、また絶縁表面が平滑なため通風冷却を阻害す
ることなく、しかも、熱収縮性ポリイミドフィルムテー
プを用いるため、Ｈ種耐熱のある電気絶縁ａ輪の製造方
法となる。As explained above, according to the present invention, an insulating layer is formed on the surface of a wire-wound conductor, and a heat-shrinkable polyimide film tape is wrapped around the surface to form a resin leakage prevention layer. When the layer is impregnated with a thermosetting resin and then heated and cured, the resin leakage prevention layer is shrunk to form an insulating layer under pressure and at the same time prevent the resin from flowing out. Therefore, no harmful voids are created in the cured insulating layer, and the reliability is high.The insulating surface is smooth, so ventilation cooling is not obstructed.Furthermore, since the heat-shrinkable polyimide film tape is used, it is heat-resistant and has a class H heat resistance. This is a method for manufacturing an insulated A-ring.
図面は本発明の方法の一実施例にて製造した電気絶縁線
輪の断面図である。
１・・巻線導体、
２・・絶縁層、
３・・樹脂漏れ防止層。The drawing is a sectional view of an electrically insulated wire ring manufactured by an embodiment of the method of the present invention. 1. Winding conductor, 2. Insulating layer, 3. Resin leakage prevention layer.
Claims (1)
線輪の製造方法において、未硬化の熱硬化性樹脂を後か
ら含ませるか又は予じめ含ませた絶縁テープ巻回による
絶縁層の外側に、熱収縮性を有するポリイミドフィルム
テープ又はシートを重巻に巻回した樹脂漏れ防止層を形
成し、加熱して前記樹脂漏れ防止層を収縮させると共に
絶縁層内の樹脂を硬化させることを特徴とする電気絶縁
線輪の製造方法。In a method for manufacturing electrical insulating wire by a vacuum pressure impregnation method or a resin-rich method, an uncured thermosetting resin is added to the outside of the insulating layer by winding an insulating tape that is pre-impregnated with the resin, or A resin leak prevention layer is formed by heavily winding a heat-shrinkable polyimide film tape or sheet, and is heated to shrink the resin leak prevention layer and harden the resin in the insulating layer. A method for manufacturing electrically insulated coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3507486A JPS62196052A (en) | 1986-02-21 | 1986-02-21 | Manufacture of electrical insulated coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3507486A JPS62196052A (en) | 1986-02-21 | 1986-02-21 | Manufacture of electrical insulated coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62196052A true JPS62196052A (en) | 1987-08-29 |
Family
ID=12431852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3507486A Pending JPS62196052A (en) | 1986-02-21 | 1986-02-21 | Manufacture of electrical insulated coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62196052A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6927342B1 (en) * | 2000-06-23 | 2005-08-09 | Von Roll Isola Winding Systems Gmbh | Insulation for electrical conductors that produces no partial discharges |
| JP2008283814A (en) * | 2007-05-11 | 2008-11-20 | Mitsubishi Electric Corp | Flexible sleeve |
-
1986
- 1986-02-21 JP JP3507486A patent/JPS62196052A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6927342B1 (en) * | 2000-06-23 | 2005-08-09 | Von Roll Isola Winding Systems Gmbh | Insulation for electrical conductors that produces no partial discharges |
| JP2008283814A (en) * | 2007-05-11 | 2008-11-20 | Mitsubishi Electric Corp | Flexible sleeve |
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