JP2574232Y2 - Transformers for molded instruments - Google Patents
Transformers for molded instrumentsInfo
- Publication number
- JP2574232Y2 JP2574232Y2 JP1992035584U JP3558492U JP2574232Y2 JP 2574232 Y2 JP2574232 Y2 JP 2574232Y2 JP 1992035584 U JP1992035584 U JP 1992035584U JP 3558492 U JP3558492 U JP 3558492U JP 2574232 Y2 JP2574232 Y2 JP 2574232Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- insulating layer
- nonwoven fabric
- insulating
- molded
- 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 - Lifetime
Links
Landscapes
- Insulating Of Coils (AREA)
- Transformers For Measuring Instruments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本案は，モールド形計器用変圧器
に関し、特に一次コイルの絶縁構造の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded transformer for an instrument, and more particularly to an improvement in an insulation structure of a primary coil.
【０００２】[0002]
【従来の技術】モールド形計器用変圧器は、二次コイル
を内側に配置し一次コイルを外側に配置し、これらに絶
縁樹脂を含浸させて構成している。従来の一次コイルの
絶縁は、図２に示すようにコイル１の段間に不織布２を
設け、絶縁樹脂で含浸した構造となっている。2. Description of the Related Art A molded-type instrument transformer has a secondary coil disposed inside and a primary coil disposed outside, and these are impregnated with an insulating resin. Conventional insulation of a primary coil has a structure in which a nonwoven fabric 2 is provided between the steps of a coil 1 and impregnated with an insulating resin as shown in FIG.
【０００３】[0003]
【考案が解決しようとする課題】しかし、不織布とコイ
ルを交互に巻いていった場合、コイルの外側に不織布の
無い空気層３が存在し、絶縁樹脂を含浸したとき空気層
３の部分は絶縁樹脂が充填し、絶縁樹脂のたまりが存在
する。このため不織布がない部分は機械的特性が劣り、
クラックやキレツが生じ部分放電の発生の原因となり、
寿命も短くなるという欠点があった。本案は、コイル端
部にも層が均一に分布し、樹脂のたまりが発生しない電
気的および機械的に優れた一次コイルの絶縁を提供する
ことを目的とする。However, when the nonwoven fabric and the coil are wound alternately, the air layer 3 without the nonwoven fabric exists outside the coil, and when the insulating resin is impregnated, the air layer 3 is insulated. Resin is filled and there is a pool of insulating resin. For this reason, the part without the nonwoven fabric has poor mechanical properties,
Cracks and cracks occur, causing partial discharge,
There is a disadvantage that the life is shortened. An object of the present invention is to provide an electrically and mechanically excellent insulation of a primary coil in which a layer is evenly distributed also at a coil end portion and a resin does not accumulate.
【０００４】[0004]
【課題を解決するための手段】フィルム状の堅い材質の
不織布を巻装した第１の絶縁層と、第１の絶縁層の外周
に絶縁電線を巻装したコイルと、コイルの外周に綿状の
柔らかい材質の不織布を巻装した第２絶縁層とを設け、
これらに絶縁樹脂を含浸するようにしている。Means for Solving the Problems A first insulating layer in which a film-like non-woven fabric of a hard material is wound, a coil in which an insulated wire is wound around the outer periphery of the first insulating layer, and a cotton-like sheet is wound around the coil And a second insulating layer wound with a soft non-woven fabric of
These are impregnated with an insulating resin.
【０００５】[0005]
【作用】これによりコイルが絶縁層の中に沈みこむこと
もなく規則正しく巻くことができ、コイル両端にも絶縁
層が密着し空気層が発生しなくなる。As a result, the coil can be wound regularly without sinking into the insulating layer, and the insulating layer adheres to both ends of the coil so that no air layer is generated.
【０００６】[0006]
【実施例】以下、本案を図１に示す実施例に基づいて説
明する。図１は一次コイルの絶縁を示しており、フィル
ム状の堅い材質の不織布、例えば日本バイリ−ン（株）
のポリエステル不織布Ｈ−８０１０密度０．４８ｇ／ｃ
ｍ3 を筒状に巻装した第１の絶縁層４を構成する。この
第１の絶縁層の外周に絶縁電線を巻装し、この第１の絶
縁層中に沈みこむこともなく一様に規則正しく配列され
てコイル５が形成できる。このコイルの外周に綿状の柔
らかい材質の不織布、例えば倉敷繊維加工（株）のポリ
エステル不織布ＥＴ６０密度０．１７ｇ／ｃｍ3 を巻装
し、絶縁電線の外周に密着して絶縁電線あるいは第１の
絶縁層との間に空気層が発生することなく第２の絶縁層
６を構成する。このようにして第１の絶縁層と絶縁電線
と第２の絶縁層とを順次巻装して一次コイルを形成し、
これを金型にセットして絶縁樹脂を含浸硬化させて構成
するものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in FIG. FIG. 1 shows the insulation of the primary coil, which is a film-shaped non-woven fabric of a hard material, for example, Nippon Virgin Co., Ltd.
Polyester non-woven fabric H-8010 density 0.48g / c
The first insulating layer 4 is formed by winding m 3 in a cylindrical shape. An insulated wire is wound around the outer periphery of the first insulating layer, and the coils 5 can be formed uniformly and regularly without sinking into the first insulating layer. A nonwoven fabric of a cotton-like soft material, for example, a polyester nonwoven fabric ET60 having a density of 0.17 g / cm 3 manufactured by Kurashiki Fiber Processing Co., Ltd. is wound around the outer periphery of the coil, and is closely adhered to the outer periphery of the insulated wire. The second insulating layer 6 is formed without generating an air layer between the second insulating layer 6 and the insulating layer. In this way, the first insulating layer, the insulated wire, and the second insulating layer are sequentially wound to form a primary coil,
This is set in a mold and impregnated and cured with an insulating resin.
【０００７】[0007]
【考案の効果】以上述べたように、本発明によれば、コ
イルの段間・端部など、コイル周囲に不織布が一様に分
布しているため、含浸時の樹脂のたまりがなくなり、ク
ラック・キレツも生じにくく、部分放電の発生も抑える
ことができ、機械的・電気的特性の優れた一次コイルを
得ることができる。As described above, according to the present invention, since the nonwoven fabric is uniformly distributed around the coil, such as between the step and the end of the coil, the resin does not accumulate at the time of impregnation, and cracks are prevented. -A sharp coil is hardly generated, a partial discharge can be suppressed, and a primary coil having excellent mechanical and electrical characteristics can be obtained.
【図１】本考案の計器用変圧器のコイル部の断面図FIG. 1 is a cross-sectional view of a coil portion of an instrument transformer according to the present invention.
【図２】従来例の計器用変圧器のコイル部の断面図FIG. 2 is a cross-sectional view of a coil portion of a conventional instrument transformer.
１ コイル ２ 不織布 ３ 空気層 ４ 第１の絶縁層 ５ コイル ６ 第２の絶縁層 REFERENCE SIGNS LIST 1 coil 2 nonwoven fabric 3 air layer 4 first insulating layer 5 coil 6 second insulating layer
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01F 27/32 H01F 38/24──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) H01F 27/32 H01F 38/24
Claims (1)
樹脂でコイル全体を含浸したモールド形計器用変圧器に
おいて、フィルム状の堅い材質の不織布を巻装した第１
の絶縁層と、前記第１の絶縁層の外周に絶縁電線を巻装
したコイルと、前記コイルの外周に綿状の柔らかい材質
の不織布を巻装した第２の絶縁層とを具え、前記第１お
よび第２の絶縁層の幅は前記コイルの幅より長く、前記
コイルの端部外縁において前記第１および第２の絶縁層
が接触していることを特徴とするモールド形計器用変圧
器。1. A molded instrument transformer in which a nonwoven fabric is sandwiched between stages of a primary coil and the entire coil is impregnated with an insulating resin.
Comprising an insulating layer, a coil wound around the insulated wire to the outer periphery of the first insulating layer, a second insulating layer which is wound around the soft material of the nonwoven fabric of cotton-like outer periphery of the coil, the first One
And the width of the second insulating layer is longer than the width of the coil,
The first and second insulating layers at the outer edge of the end of the coil
A molded transformer for an instrument, wherein the transformers are in contact with each other .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992035584U JP2574232Y2 (en) | 1992-04-28 | 1992-04-28 | Transformers for molded instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992035584U JP2574232Y2 (en) | 1992-04-28 | 1992-04-28 | Transformers for molded instruments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0587925U JPH0587925U (en) | 1993-11-26 |
| JP2574232Y2 true JP2574232Y2 (en) | 1998-06-11 |
Family
ID=12445826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992035584U Expired - Lifetime JP2574232Y2 (en) | 1992-04-28 | 1992-04-28 | Transformers for molded instruments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2574232Y2 (en) |
-
1992
- 1992-04-28 JP JP1992035584U patent/JP2574232Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0587925U (en) | 1993-11-26 |
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