JPH06237559A - Coil insulation of rotating electric machine - Google Patents
Coil insulation of rotating electric machineInfo
- Publication number
- JPH06237559A JPH06237559A JP2090793A JP2090793A JPH06237559A JP H06237559 A JPH06237559 A JP H06237559A JP 2090793 A JP2090793 A JP 2090793A JP 2090793 A JP2090793 A JP 2090793A JP H06237559 A JPH06237559 A JP H06237559A
- Authority
- JP
- Japan
- Prior art keywords
- coil insulation
- coil
- electric machine
- adhesive varnish
- 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.)
- Granted
Links
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、例えば車両駆動用主電
動機に用いられる回転電機のコイル絶縁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to coil insulation of a rotating electric machine used for a vehicle driving main electric motor, for example.
【0002】[0002]
【従来の技術】最近の回転電機は、コイル絶縁の耐熱性
向上による単機容量の増大、小型軽量化、及びメンテナ
ンスフリー化等が要求されている。従来、コイルの絶縁
として使用されているH種(220 ℃)以上の材料には、
アラミド紙、ポリイミドフィルム、ポリアミドフィルム
及びマイカ紙にフィルム類を貼りあわせた集成マイカテ
ープなどがある。これらは、耐電圧に対しても極めて優
れているため、絶縁厚さの薄肉化にも大きく貢献してい
る。また、これらと組み合わされる含浸樹脂としては、
ポリエステル、エポキシ樹脂等がある。2. Description of the Related Art Recent rotary electric machines are required to increase the capacity of a single machine by improving the heat resistance of coil insulation, reduce the size and weight, and make maintenance free. Conventionally, for materials of class H (220 ℃) or higher, which are used for coil insulation,
Examples include an aramid paper, a polyimide film, a polyamide film, and an integrated mica tape in which films are attached to mica paper. Since these are also extremely excellent in withstand voltage, they also greatly contribute to the thinning of the insulation thickness. Further, as the impregnating resin combined with these,
Polyester, epoxy resin, etc. are available.
【0003】一方、集成マイカテープの貼り合わせ用接
着ワニスや含浸樹脂はH種以上の耐熱性がなく、運転中
の熱応力、電磁力、振動などにより絶縁層間やコイル絶
縁と鉄心スロット間で剥離が進行して熱伝導率が低下す
る。このため、コイル温度の上昇、耐水、耐湿性の低下
による絶縁抵抗の不具合、部分放電劣化などが生じて回
転電機の寿命が低下してしまう。On the other hand, the adhesive varnish for bonding the laminated mica tape and the impregnated resin do not have heat resistance higher than H type, and are peeled off between insulating layers or between the coil insulation and the iron core slot due to thermal stress, electromagnetic force, vibration, etc. during operation. Progresses and the thermal conductivity decreases. As a result, the life of the rotating electric machine is shortened due to defects in insulation resistance due to a rise in coil temperature, deterioration in water resistance and moisture resistance, and partial discharge deterioration.
【0004】そこで、主絶縁の巻回材料、及び含浸樹脂
について検討を行った結果、含浸用樹脂として特公昭58
-17532に記載されているようなエポキシ系樹脂とイミド
系樹脂を配合した耐熱性樹脂を開発し、耐熱性がH種以
上であることを確認した。Therefore, as a result of studying the winding material for the main insulation and the impregnating resin, as a resin for impregnating
-17532 was developed a heat resistant resin containing an epoxy resin and an imide resin, and it was confirmed that the heat resistance was H or higher.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな耐熱性樹脂を単にコイル絶縁に使用しただけでは所
望する性能を得られないことが判明した。すなわち、マ
イカ紙をフィルムで裏打ちした集成マイカテープのマイ
カ紙とフィルムの貼り合わせに必要な接着ワニスの種類
と接着剤量が大きな影響を及ぼし、耐熱性ならびに電気
的性能が著しく低下する。本発明の目的は、耐熱性、さ
らには電気的性能に優れた回転電機のコイル絶縁を提供
することにある。However, it has been found that the desired performance cannot be obtained by simply using such a heat resistant resin for coil insulation. That is, the type of adhesive varnish and the amount of adhesive required for laminating the mica paper and the film of the laminated mica tape in which the mica paper is lined with a film have a great influence, and the heat resistance and the electrical performance are significantly reduced. An object of the present invention is to provide coil insulation of a rotary electric machine that is excellent in heat resistance and electrical performance.
【0006】[0006]
【課題を解決するための手段および作用】上記目的を達
成するために、本発明者等は前述したような接着ワニス
の種類と接着剤量について検討した。In order to achieve the above object, the inventors of the present invention examined the type of adhesive varnish and the amount of adhesive as described above.
【0007】接着ワニスの種類については、ポリエステ
ル系接着ワニス、エポキシ系接着ワニス、シリコーン系
接着ワニスを検討してみたが、シリコーン系接着ワニス
が最も優れた耐熱性を有し、220 ℃以上の耐熱性を得ら
れることが判明した。As for the type of adhesive varnish, polyester type adhesive varnish, epoxy type adhesive varnish, and silicone type adhesive varnish were examined. Silicone type adhesive varnish has the best heat resistance and heat resistance of 220 ° C or higher. It turned out that the sex can be obtained.
【0008】一方、接着剤量によっては、より耐熱性や
電気的性能を向上させることできることも判明した。す
なわち、接着剤量が多過ぎて集成マイカテープのマイカ
紙表面に接着ワニスが染みでているような状態の時は、
1/2重ね巻回時に上層のマイカ紙と下層の基材のフィ
ルムとの間で層間接着を起こし、含浸樹脂の含浸性を阻
害する。一方、接着剤量が少なすぎる時はフィルムとマ
イカ紙の接着が不十分なため、重ね代が不揃いになり巻
回不良を起こす。前者では誘電正接値が上昇したり部分
放電開始電圧の低下を招き、後者では絶縁破壊電圧の低
下やコイル寸法の均一性を欠くことになる。On the other hand, it has been found that heat resistance and electrical performance can be further improved depending on the amount of adhesive. In other words, when the amount of adhesive is too large and the adhesive varnish stains on the surface of the mica paper of the laminated mica tape,
At the time of ½ lap winding, interlayer adhesion occurs between the upper layer mica paper and the lower layer substrate film, impeding the impregnation property of the impregnated resin. On the other hand, when the amount of the adhesive is too small, the film and the mica paper are not sufficiently adhered to each other, resulting in uneven stacking margins and defective winding. In the former case, the dielectric loss tangent value rises and the partial discharge inception voltage decreases, and in the latter case, the dielectric breakdown voltage decreases and the coil size is not uniform.
【0009】そこで、マイカ紙と耐熱性に優胆ているフ
ィルムとをシリコーン系接着ワニスで、コイルへの巻回
性、含浸性などを考慮して、接着剤量を3.5 〜28重量%
の集成マイカテープをコイルに巻回し、さらにエポキシ
系樹脂とイミド系樹脂化合物及び酸無水物系硬化剤から
なる熱硬化性樹脂組成物を含浸し加熱硬化することによ
って、耐熱性、電気的性能を向上させることができる。Therefore, the amount of the adhesive is 3.5 to 28% by weight in consideration of the coiling property and the impregnating property of the mica paper and the heat resistant film with a silicone adhesive varnish.
By winding the laminated mica tape of the above in a coil and further impregnating and thermosetting a thermosetting resin composition consisting of an epoxy resin, an imide resin compound and an acid anhydride curing agent, heat resistance and electrical performance are improved. Can be improved.
【0010】[0010]
【実施例】以下、本発明の実施例を図面を参照して説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【0011】図1は本発明の回転電機のコイル絶縁のポ
リイミド集成マイカテープの構成図、図2は本発明の回
転電機のコイル絶縁の外観図、図3は本発明の回転電機
のコイル絶縁の絶縁構成を示す図である。FIG. 1 is a block diagram of a coil-insulated polyimide mica tape for coil insulation of a rotary electric machine of the present invention, FIG. 2 is an external view of coil insulation of a rotary electric machine of the present invention, and FIG. 3 is a coil insulation of a rotary electric machine of the present invention. It is a figure which shows an insulation structure.
【0012】これらの図において、固定子コイル1は次
のようになっている。すなわち、ポリイミドテープまた
はガラスロービングを巻回し、ワニスを塗布乾燥硬化さ
せた絶縁被覆3を施した導体2を、図2で示すコイル絶
縁8のような形状に成形して組み合わせ、さらに型崩れ
防止のためにガラステープ4を巻回し、直線部分をエポ
キシ樹脂等を含浸させて硬化させる。In these figures, the stator coil 1 is as follows. That is, a polyimide tape or glass roving is wound, and a conductor 2 coated with a varnish and coated with an insulating coating 3 is molded and combined into a shape like a coil insulation 8 shown in FIG. For this purpose, the glass tape 4 is wound, and the linear portion is impregnated with epoxy resin or the like and cured.
【0013】一方、電圧階級に応じ、例えば1500(V)
クラスの誘導電動機の場合、後述するポリイミドテープ
6とマイカ紙11の接着に全重量に対して3.5 〜28重量%
になるように接着剤量を調整したシリコーン系接着ワニ
ス10(862HDT、日本マイカ製作所)を用いたポリイミド
集成マイカテープ5を2回、その上にポリイミドテープ
6(カプトンデュポン社)を1回、さらにその上に含浸
樹脂の保持と強度確保のためのガラステープ7を1回巻
回す。On the other hand, depending on the voltage class, for example, 1500 (V)
In the case of a class induction motor, 3.5 to 28% by weight of the total weight is required for bonding polyimide tape 6 and mica paper 11 described later.
The polyimide adhesive mica tape 5 using the silicone adhesive varnish 10 (862HDT, Japan Mica Mfg. Co., Ltd.) whose adhesive amount was adjusted so that A glass tape 7 for holding the impregnated resin and securing the strength is wound around it once.
【0014】その後、固定子のスロットに巻回しの終了
したコイル絶縁8を挿入し、水分除去、含浸性向上のた
め約120 ℃で予備加熱し、エポキシ系樹脂とイミド系樹
脂との化合物及び酸無水物系硬化剤からなる含浸樹脂で
真空度が約70(Pa)で加圧圧力が約0.5 (MPa )にて真
空加圧含浸を行う。含浸樹脂の硬化は約180 ℃にて15時
間行い、本発明による1500(V)クラスの誘導電動機固
定子コイル絶縁を得る。After that, the wound coil insulation 8 is inserted into the slot of the stator and preheated at about 120 ° C. to remove water and improve impregnation, and the compound of epoxy resin and imide resin and acid are added. Vacuum impregnation is performed with an impregnating resin consisting of an anhydride curing agent at a vacuum degree of about 70 (Pa) and a pressure of about 0.5 (MPa). The impregnating resin is cured at about 180 ° C. for 15 hours to obtain 1500 (V) class induction motor stator coil insulation according to the present invention.
【0015】このようにして得られたコイル絶縁8につ
いて、本実施例のシリコーン系接着ワニス10と、従来の
エポキシ系接着ワニス(RDS-039 東芝ケミカル製)を用
いたポリイミド集成マイカテープを使用したコイル絶縁
(比較例1とする)を作製し、両者について 310℃にて
熱劣化、吸湿劣化させて絶縁破壊電圧(BDV)を測定
し、耐熱性の評価を行った(表1)。また、シリコーン
系接着ワニス10の配合量を変化させたポリイミド集成マ
イカテープ(全重量に対しシリコーン系接着ワニス10が
1.0 重量%のものと30重量%のもの)を使用してやはり
上記と同様にコイル絶縁(比較例2、3とする)を作製
し、それぞれ誘電正接と絶縁破壊電圧及びポリイミド集
成マイカテープの巻回性の評価を行った(表2)。For the coil insulation 8 thus obtained, a polyimide-bonded mica tape using a silicone-based adhesive varnish 10 of this embodiment and a conventional epoxy-based adhesive varnish (RDS-039 manufactured by Toshiba Chemical) was used. Coil insulation (referred to as Comparative Example 1) was produced, and both were subjected to heat deterioration and moisture absorption deterioration at 310 ° C. to measure the dielectric breakdown voltage (BDV), and heat resistance was evaluated (Table 1). In addition, the polyimide-bonded mica tape in which the compounding amount of the silicone-based adhesive varnish 10 is changed (the silicone-based adhesive varnish 10 is
Using 1.0 wt% and 30 wt%), coil insulation (Comparative Examples 2 and 3) was made in the same manner as above, and the dielectric loss tangent, the dielectric breakdown voltage, and the winding of the polyimide mica tape were respectively wound. The roundness was evaluated (Table 2).
【0016】表1をみても明らかなように、本実施例と
比較例1においては、実施例の方が劣化後の絶縁破壊電
圧が高く、耐熱性に優れていることがわかる。巻回性に
ついては人手での巻回は両者とも問題はなかったが、巻
回張力を高めた時には後者においてマイカ紙の切断が見
られた。As is clear from Table 1, in this example and the comparative example 1, it is understood that the example has a higher dielectric breakdown voltage after deterioration and is excellent in heat resistance. Regarding the winding property, there was no problem in the manual winding, but when the winding tension was increased, the cutting of the mica paper was observed in the latter.
【0017】また表2をみてみると、比較例2において
は、貼り合わせ用接着剤量が極端に少ないために巻回不
良となった。実施例と比較すると、比較例2では1/2
重ねたテープの上下間に隙間が生じるため、含浸性が良
好になることにより誘電正接値が小さくなっているが、
テープの重ね代が不揃いになるために絶縁破壊電圧の低
下がみられる。比較例3においては、接着剤量が多いた
め、1/2重ねた上層テープのマイカ紙と下層テープの
基材テープであるポリイミドフィルムの層間接着により
含浸不良が生じ、誘電正接値についても実施例をはるか
に上回り、性能の低下がみられる。Further, looking at Table 2, in Comparative Example 2, the amount of the bonding adhesive was extremely small, so that winding failure occurred. Compared to the example, the comparative example 2 is 1/2
Since there is a gap between the top and bottom of the stacked tapes, the impregnation property is good and the dielectric loss tangent value is small.
The breakdown voltage is reduced because the tape overlaps are uneven. In Comparative Example 3, since the amount of the adhesive was large, impregnation failure occurred due to interlayer adhesion between the mica paper of the upper layer tape and the polyimide film that is the base tape of the lower layer tape that were ½ stacked, and the dielectric loss tangent value was also determined in Example. It is much higher than the above, and there is a decrease in performance.
【0018】[0018]
【表1】 [Table 1]
【0019】[0019]
【表2】 [Table 2]
【0020】本実施例のコイル絶縁8は構成部材の一つ
である集成マイカテープの貼り合わせ用接着ワニスに、
従来使用されているエポキシ系接着ワニスの代わりによ
り耐熱性に優れるシリコーン系接着ワニスと、組み合わ
される含浸樹脂に前述の耐熱性樹脂を用いることを特徴
とするが、加熱劣化後の耐電圧の優位性は基本的にシリ
コーン系接着ワニスの耐熱性に負うところが大きい。シ
リコーン系接着ワニスは、絶縁破壊電圧値や接着力をエ
ポキシ系接着ワニスと比較したとき、初期値は低いもの
の熱劣化後の特性低下が少ないという特徴をもっている
のである。このため、シリコーン系接着ワニスの割合を
増大させることにより耐熱性の向上が望めるが、コイル
絶縁製造工程上の理由からその量は規制される。また、
シリコーン系接着ワニスは耐熱性に優れるものの、その
硬化物は接着性がやや劣るという特徴がある。すなわ
ち、車両運行中の振動や熱応力などにより接着面が剥離
し部分放電開始電圧の低下を生じ、絶縁物の寿命を低下
させたり、誘電圧接値を上昇させたりする。The coil insulation 8 of this embodiment is used as an adhesive varnish for laminating laminated mica tape, which is one of the constituent members,
It is characterized by using the above-mentioned heat-resistant resin as the impregnating resin to be combined with the silicone-based adhesive varnish that has excellent heat resistance by replacing the conventionally used epoxy-based adhesive varnish, but the superiority of withstand voltage after heat deterioration Basically, it depends largely on the heat resistance of the silicone adhesive varnish. The silicone-based adhesive varnish is characterized in that, when compared with the epoxy-based adhesive varnish in terms of dielectric breakdown voltage value and adhesive strength, the initial value is low, but the characteristic deterioration after thermal deterioration is small. Therefore, it is expected that the heat resistance can be improved by increasing the proportion of the silicone adhesive varnish, but the amount is regulated due to the coil insulation manufacturing process. Also,
Although the silicone-based adhesive varnish has excellent heat resistance, the cured product thereof has a characteristic of slightly poor adhesion. That is, the adhesive surface is peeled off due to vibration or thermal stress during vehicle operation, which causes a decrease in the partial discharge inception voltage, which shortens the life of the insulator and increases the dielectric pressure contact value.
【0021】しかしながら、特公昭58-17532に開示され
る耐熱性含浸樹脂を組み合わせる場合には接着性も比較
的良好である。本実施例のシリコーン系接着ワニスを使
用した集成マイカテープの基材のフィルムをはがしたマ
イカ紙に耐熱性含浸樹脂を含浸したときの接着強さにつ
いて、従来のエポキシ系接着剤との比較試験を行った
(表3)。表3をみても明らかなように、H種(雰囲気
温度を加えて220 ℃)以上の領域において、従来のもの
と同レベルにあることがわかる。However, when the heat-resistant impregnating resin disclosed in JP-B-58-17532 is combined, the adhesiveness is relatively good. Regarding the adhesive strength when the heat-resistant impregnating resin is impregnated on the film of the base material of the laminated mica tape using the silicone-based adhesive varnish of the present example, a comparative test with the conventional epoxy adhesive Was performed (Table 3). As is clear from Table 3, it can be seen that it is at the same level as the conventional one in the region of H type (220 ° C. including the ambient temperature) or higher.
【0022】[0022]
【表3】 [Table 3]
【0023】[0023]
【発明の効果】以上のように本発明によれば、マイカ紙
とポリイミドフィルムをシリコーン系接着ワニスで貼り
合わせたポリイミド集成マイカテープをコイルに巻回
し、エポキシ系樹脂とイミド系樹脂化合物及び酸無水物
系硬化剤からなる熱硬化性樹脂組成物を含浸させて硬化
させるようにしたので、耐熱性を向上させることができ
る。さらに、シリコーン系接着ワニスの量を適当化する
ことにより、電気的性能を向上させることができる。As described above, according to the present invention, a polyimide laminated mica tape obtained by bonding mica paper and a polyimide film with a silicone adhesive varnish is wound around a coil, and an epoxy resin, an imide resin compound and an acid anhydride are used. Since the thermosetting resin composition composed of the physical curing agent is impregnated and cured, heat resistance can be improved. Furthermore, the electrical performance can be improved by optimizing the amount of the silicone adhesive varnish.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の回転電機のコイル絶縁のポリイミド集
成マイカテープを示す図。FIG. 1 is a diagram showing a coil-insulated polyimide laminated mica tape for a rotating electric machine according to the present invention.
【図2】本発明の回転電機のコイル絶縁の外観図。FIG. 2 is an external view of coil insulation of the rotating electric machine of the present invention.
【図3】本発明の回転電機のコイル絶縁の絶縁構成を示
す図。FIG. 3 is a diagram showing an insulating configuration of coil insulation of the rotating electric machine of the present invention.
5…ポリイミド集成マイカテープ 8…コイル絶縁 10…シリコーン系接着ワニス 5 ... Polyimide laminated mica tape 8 ... Coil insulation 10 ... Silicone adhesive varnish
Claims (2)
ーン系接着ワニスで貼り合わせたポリイミド集成マイカ
テープをコイルに巻回し、エポキシ系樹脂とイミド系樹
脂化合物及び酸無水物系硬化剤からなる熱硬化性樹脂組
成物を含浸させて硬化させることを特徴とする回転電機
のコイル絶縁。1. A thermosetting resin comprising an epoxy resin, an imide resin compound and an acid anhydride curing agent, which is obtained by winding a polyimide laminated mica tape obtained by bonding a mica paper and a polyimide film with a silicone adhesive varnish around a coil. Coil insulation for a rotating electric machine, characterized by being impregnated with a composition and curing.
〜28重量%であることを特徴とする請求項1記載の回転
電機のコイル絶縁。2. The amount of the silicone adhesive varnish is 3.5.
The coil insulation of the rotating electric machine according to claim 1, wherein the coil insulation is about 28% by weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02090793A JP3167479B2 (en) | 1993-02-09 | 1993-02-09 | Coil insulation of rotating electric machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02090793A JP3167479B2 (en) | 1993-02-09 | 1993-02-09 | Coil insulation of rotating electric machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06237559A true JPH06237559A (en) | 1994-08-23 |
JP3167479B2 JP3167479B2 (en) | 2001-05-21 |
Family
ID=12040306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP02090793A Expired - Fee Related JP3167479B2 (en) | 1993-02-09 | 1993-02-09 | Coil insulation of rotating electric machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3167479B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006087273A (en) * | 2004-09-17 | 2006-03-30 | Yaskawa Electric Corp | Rotary electric machine |
JP2009071948A (en) * | 2007-09-12 | 2009-04-02 | Denso Corp | Stator for rotary electric machine and method of manufacturing the same |
CN107393664A (en) * | 2017-07-12 | 2017-11-24 | 河南省亚安绝缘材料厂有限公司 | A kind of H levels flexible composite insulation material |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4706529B2 (en) * | 2006-03-27 | 2011-06-22 | アイシン・エィ・ダブリュ株式会社 | Determination method of varnish impregnation state |
JP2009191239A (en) | 2008-02-18 | 2009-08-27 | Univ Kansai | Process of manufacturing partial discharge-resistant resin composition, partial discharge-resistant resin composition, partial discharge-resistant insulation material, and partial discharge-resistant insulator structure |
-
1993
- 1993-02-09 JP JP02090793A patent/JP3167479B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006087273A (en) * | 2004-09-17 | 2006-03-30 | Yaskawa Electric Corp | Rotary electric machine |
JP4596244B2 (en) * | 2004-09-17 | 2010-12-08 | 株式会社安川電機 | Rotating electric machine |
JP2009071948A (en) * | 2007-09-12 | 2009-04-02 | Denso Corp | Stator for rotary electric machine and method of manufacturing the same |
CN107393664A (en) * | 2017-07-12 | 2017-11-24 | 河南省亚安绝缘材料厂有限公司 | A kind of H levels flexible composite insulation material |
Also Published As
Publication number | Publication date |
---|---|
JP3167479B2 (en) | 2001-05-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8669473B2 (en) | Dry mica tape and insulation coils manufactured therewith | |
US20130147307A1 (en) | Dry Mica Tape, Electrically insulated Coil Using the Same, and Electrical Rotating Machine Using the Same | |
JPS63250010A (en) | Conductor with surrounded insulation | |
JPS63110929A (en) | Coil for being provided in slots of stator or rotor of electric machine | |
US2320866A (en) | Flexible insulating material | |
JP2008192585A (en) | Multilayer laminated mica tape | |
US5989702A (en) | Sandwich insulation for increased corona resistance | |
JP2010193673A (en) | Dry mica tape, electrical insulation coil using it, stator coil, and rotary electric machine | |
CA2130161C (en) | Sandwich insulation for increased corona resistance | |
JPH06237559A (en) | Coil insulation of rotating electric machine | |
US5691058A (en) | Sheet material for electrical insulation, prepreg and electrically insulated coil using the same | |
JP4116236B2 (en) | Laminated member and rotating electric machine using the same | |
JPS6319709A (en) | High voltage insulating conductor | |
JP3369795B2 (en) | Type F rotary electric device | |
JP2004146093A (en) | Insulating paper | |
JP2008228551A (en) | Coil for rotary electric machine using combination of laminated mica tape and multilayer laminated mica tape | |
JPH11113204A (en) | Stator coil of dynamo-electric machine | |
CN217655749U (en) | Self-adhesion type turn-to-turn insulation mica tape and turn-to-turn insulation | |
JPS58144563A (en) | Manufacture of coil conductor | |
JPH0640727B2 (en) | Method for manufacturing randomly wound coil of high-voltage rotating electric machine | |
JPS61189155A (en) | Manufacture of rotary electric machine | |
JPS61266051A (en) | Insulating method for high voltage rotary electric machine coil | |
JP2001186705A (en) | Slot liner for dynamoelectric machine | |
JPS59201657A (en) | Insulating method of winding for electric machine | |
JP2024101033A (en) | Prepreg mica tape, dynamo-electric machine and manufacturing method of dynamo-electric machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |