JPH08148348A - Voltage transformer - Google Patents
Voltage transformerInfo
- Publication number
- JPH08148348A JPH08148348A JP6290953A JP29095394A JPH08148348A JP H08148348 A JPH08148348 A JP H08148348A JP 6290953 A JP6290953 A JP 6290953A JP 29095394 A JP29095394 A JP 29095394A JP H08148348 A JPH08148348 A JP H08148348A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- insulating film
- primary coil
- heat resistance
- film
- 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.)
- Withdrawn
Links
Landscapes
- Insulating Of Coils (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、計器用変圧器に関し、
特にその１次コイルの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument transformer,
Particularly, it relates to improvement of the primary coil.
【０００２】[0002]
【従来の技術】計器用変圧器の１次コイルは、一般に図
２に示すように、１次コイル用巻軸１に１次コイル用巻
線２がレイヤー絶縁フィルム層３を介して巻装されて構
成されている。2. Description of the Related Art Generally, as shown in FIG. 2, a primary coil of an instrument transformer has a winding wire 1 for the primary coil wound around a winding shaft 1 for the primary coil with a layer insulating film layer 3 interposed therebetween. Is configured.
【０００３】このような計器用変圧器の１次コイルによ
り高い耐熱性能が要求れる場合、従来は、レイヤー絶縁
フィルム層３の総てを耐熱性の高いポリイミドフィルム
等で構成したり、使用条件を制限してポリエステルフィ
ルムで総てを構成したりしていた。When high heat resistance is required by the primary coil of such an instrument transformer, conventionally, all of the layer insulating film layers 3 are made of a highly heat resistant polyimide film or the like, or the usage conditions are changed. All of them were limited to polyester film.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、レイヤ
ー絶縁フィルム層３の総てを耐熱性の高いポリイミドフ
ィルム等で構成すると、該耐熱性の高いポリイミドフィ
ルム等は、ポリエステルフィルムに比べて非常に高価
（ポリエステルフィルムの数倍から10倍程度）であるた
め、計器用変圧器のコストが高くなる問題点があった。However, if all of the layer insulating film layers 3 are made of a polyimide film having a high heat resistance, the polyimide film having a high heat resistance is much more expensive than a polyester film. Since it is several times to 10 times that of polyester film), there was a problem that the cost of the transformer for measuring instrument becomes high.
【０００５】一方レイヤー絶縁フィルム層３の総てをポ
リエステルフィルムで構成すると、使用条件が制約を受
けたり、使用条件が厳しい場合は、１ランク又は数ラン
ク大きいコイルを使用しているので、計器用変圧器が大
型化する問題点があった。On the other hand, if all of the layer insulating film layers 3 are made of polyester film, if the use conditions are restricted or the use conditions are severe, a coil of one rank or several ranks is used, so There was a problem that the transformer became large.
【０００６】使用条件以上にレイヤー絶縁フィルム層３
の温度が高くなると、絶縁フィルムが変質し、絶縁低下
を起こし、最悪の場合は計器用変圧器の破壊に至ること
になる。Layer insulation film layer 3 more than the conditions of use
When the temperature rises, the insulating film deteriorates and the insulation deteriorates, and in the worst case, the instrument transformer is destroyed.
【０００７】本発明の目的は、コストの上昇を抑制して
耐熱性を向上させることができる計器用変圧器を提供す
ることにある。An object of the present invention is to provide an instrument transformer capable of suppressing an increase in cost and improving heat resistance.
【０００８】[0008]
【課題を解決するための手段】本発明は、１次コイル用
巻線がレイヤー絶縁フィルム層を介して巻装されて１次
コイルが構成されている計器用変圧器を改良の対象とし
ている。DISCLOSURE OF THE INVENTION The present invention is directed to an improvement of an instrument transformer in which a primary coil winding is wound via a layer insulating film layer to form a primary coil.
【０００９】本発明に係る計器用変圧器においては、前
記レイヤー絶縁フィルム層は前記１次コイル用巻線に接
する層表面のレイヤー絶縁フィルムとして層中間のレイ
ヤー絶縁フィルムより耐熱性が高い耐熱性絶縁フィルム
が使用されて構成されていることを特徴とする。In the transformer for an instrument according to the present invention, the layer insulating film layer is a heat insulating layer having a higher heat resistance than a layer insulating film in the middle of the layer as a layer insulating film on the surface of the layer in contact with the primary coil winding. It is characterized in that a film is used and configured.
【００１０】この場合、前記層表面のレイヤー絶縁フィ
ルムとしてポリイミドフィルムを使用することができ、
また層中間のレイヤー絶縁フィルムとしてポリエステル
フィルムを使用することができる。In this case, a polyimide film can be used as the layer insulating film on the surface of the layer,
A polyester film can be used as a layer insulating film in the middle of the layers.
【００１１】[0011]
【作用】このように１次コイルのレイヤー絶縁フィルム
層の１次コイル用巻線に接する層表面のレイヤー絶縁フ
ィルムとして、層中間のレイヤー絶縁フィルムより耐熱
性が高い耐熱性絶縁フィルムが使用されていると、該レ
イヤー絶縁フィルム層のうち最も温度が高くなる部分の
みが耐熱性能の高い絶縁フィルムで構成されることにな
り、該レイヤー絶縁フィルム層の耐熱性能がバランスの
とれたものとなり、計器用変圧器の耐熱性能を向上させ
ることができる。As described above, as the layer insulating film of the layer insulating film of the primary coil, which is in contact with the winding for the primary coil, the heat resistant insulating film having higher heat resistance than the layer insulating film in the middle is used. In that case, only the part of the layer insulating film having the highest temperature is composed of the insulating film having high heat resistance, and the heat insulating performance of the layer insulating film is well balanced. The heat resistance performance of the transformer can be improved.
【００１２】また、耐熱性が高く高価な耐熱性絶縁フィ
ルムは、レイヤー絶縁フィルム層の１次コイル用巻線に
接する層表面のみなので、コストの上昇を抑制すること
ができる。Further, since the heat-resistant insulating film having high heat resistance and high price is only the layer surface of the layer insulating film layer which is in contact with the winding for the primary coil, the cost increase can be suppressed.
【００１３】[0013]
【実施例】図１は本発明に係る計器用変圧器の一実施例
の要部構成を示したものである。本実施例の計器用変圧
器において１次コイルの各レイヤー絶縁フィルム層３
は、１次コイル用巻線２に接する層表面のレイヤー絶縁
フィルム３ａとして層中間のレイヤー絶縁フィルム３ｂ
より耐熱性が高い耐熱性絶縁フィルムが使用されて構成
されている。この場合、本実施例では、層表面の耐熱性
が高いレイヤー絶縁フィルム３ａとしては、ポリイミド
フィルムが使用されている。また、層中間のレイヤー絶
縁フィルム３ｂとしては、ポリエステルフィルムが使用
されている。例えば、各レイヤー絶縁フィルム層３は、
通常、絶縁フィルムが５〜50層程度積層されて構成され
ているが、そのうちの１次コイル用巻線２に接する層表
面の１〜数層程度が耐熱性が高い耐熱性絶縁フィルムで
あるポリイミドフィルムで構成され、残りの中間層がポ
リイミドフィルムより耐熱性の低いポリエステルフィル
ムで構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the construction of the essential parts of one embodiment of a transformer for meters according to the present invention. In the instrument transformer of this embodiment, each layer of the primary coil insulating film layer 3
Is a layer insulation film 3a in the middle of the layer as a layer insulation film 3a on the surface of the layer in contact with the primary coil winding 2.
A heat-resistant insulating film having higher heat resistance is used and configured. In this case, in this embodiment, a polyimide film is used as the layer insulating film 3a having a high heat resistance on the layer surface. A polyester film is used as the layer insulating film 3b in the middle of the layers. For example, each layer insulating film layer 3 is
Usually, about 5 to 50 layers of insulating film are laminated, and about 1 to several layers on the surface of the layer contacting the primary coil winding 2 are heat-resistant insulating films having high heat resistance. It is composed of a film, and the remaining intermediate layer is composed of a polyester film having lower heat resistance than the polyimide film.
【００１４】このように１次コイルの各レイヤー絶縁フ
ィルム層３の１次コイル用巻線２に接する層表面のレイ
ヤー絶縁フィルム３ａとして、層中間のレイヤー絶縁フ
ィルム３ｂより耐熱性が高い耐熱性絶縁フィルムが使用
されていると、該レイヤー絶縁フィルム層３のうち最も
温度が高くなる部分のみが耐熱性能の高い絶縁フィルム
で構成されることになり、該レイヤー絶縁フィルム層３
の耐熱性能がバランスのとれたものとなり、計器用変圧
器の耐熱性能を向上させることができる。実験による
と、このような構造の計器用変圧器の耐熱性能は、レイ
ヤー絶縁フィルム層３の全層を耐熱性が高い耐熱性絶縁
フィルムであるポリイミドフィルムで構成したものと、
同等の性能が得られることが判明した。As described above, as the layer insulating film 3a on the layer surface of each layer insulating film layer 3 of the primary coil which is in contact with the primary coil winding 2, the heat insulating layer has a higher heat resistance than the layer insulating film 3b in the middle layer. When a film is used, only the portion of the layer insulating film layer 3 where the temperature becomes the highest is composed of an insulating film having high heat resistance, and the layer insulating film layer 3
The heat resistance of is balanced, and the heat resistance of the instrument transformer can be improved. According to the experiment, the heat resistance performance of the instrument transformer having such a structure is that all the layers of the layer insulating film layer 3 are made of a polyimide film which is a heat resistant insulating film having high heat resistance,
It was found that equivalent performance was obtained.
【００１５】また、耐熱性が高い耐熱性絶縁フィルム
は、レイヤー絶縁フィルム層３の１次コイル用巻線２に
接する層表面のみなので、コストの上昇を抑制すること
ができる。Further, since the heat-resistant insulating film having high heat resistance is only on the layer surface of the layer insulating film layer 3 which is in contact with the primary coil winding 2, the cost increase can be suppressed.
【００１６】[0016]
【発明の効果】本発明に係る計器用変圧器では、１次コ
イルのレイヤー絶縁フィルム層における１次コイル用巻
線に接する層表面のレイヤー絶縁フィルムとして、層中
間のレイヤー絶縁フィルムより耐熱性が高い耐熱性絶縁
フィルムを使用して構成しているので、該レイヤー絶縁
フィルム層のうち最も温度が高くなる部分のみが耐熱性
能の高い絶縁フィルムで構成されることになり、該レイ
ヤー絶縁フィルム層の耐熱性能がバランスのとれたもの
となり、計器用変圧器の耐熱性能を向上させることがで
きる。EFFECT OF THE INVENTION In the transformer for an instrument according to the present invention, the layer insulation film of the primary coil has a heat resistance higher than that of the intermediate layer insulation film as the layer insulation film on the layer surface in contact with the primary coil winding. Since it is configured by using a high heat resistant insulating film, only the part of the layer insulating film layer where the temperature becomes the highest is composed of an insulating film having high heat resistance performance. The heat resistance is balanced, and the heat resistance of the instrument transformer can be improved.
【００１７】また、耐熱性が高い耐熱性絶縁フィルム
は、１次コイルのレイヤー絶縁フィルム層の１次コイル
用巻線に接する層表面のみなので、コストの上昇を抑制
することができる。Further, since the heat-resistant insulating film having high heat resistance is only the layer surface of the layer insulating film layer of the primary coil which is in contact with the winding for the primary coil, the cost increase can be suppressed.
【００１８】更に、本発明によれば、１次コイルの各レ
イヤー絶縁フィルム層を総て耐熱性の低いポリエステル
フィルム等の絶縁フィルムで構成したものに比べて、使
用条件が同じであれば、耐熱性が向上した分、計器用変
圧器を小型化でき、コストの低減を図ることができる。Further, according to the present invention, when the use conditions are the same, the heat resistance is improved as compared with the case where all the insulating film layers of the primary coil are made of insulating films such as polyester film having low heat resistance. As a result, the voltage transformer can be downsized and the cost can be reduced.
【図１】本発明に係る計器用変圧器の１次コイルの要部
構成の一例を示す縦断面図である。FIG. 1 is a vertical cross-sectional view showing an example of a main part configuration of a primary coil of an instrument transformer according to the present invention.
【図２】計器用変圧器の１次コイルの一例を示す上半部
縦断面図である。FIG. 2 is an upper half longitudinal cross-sectional view showing an example of a primary coil of an instrument transformer.
１ １次コイル用巻軸 ２ １次コイル用巻線 ３ レイヤー絶縁フィルム層 ３ａ 層表面のレイヤー絶縁フィルム ３ｂ 層中間のレイヤー絶縁フィルム 1 Primary coil winding shaft 2 Primary coil winding 3 Layer insulating film Layer 3a Layer surface layer insulating film 3b Layer Intermediate layer insulating film
Claims (3)
ム層を介して巻装されて１次コイルが構成されている計
器用変圧器において、 前記レイヤー絶縁フィルム層は前記１次コイル用巻線に
接する層表面のレイヤー絶縁フィルムとして層中間のレ
イヤー絶縁フィルムより耐熱性が高い耐熱性絶縁フィル
ムが使用されて構成されていることを特徴とする計器用
変圧器。1. A transformer for an instrument in which a primary coil winding is wound via a layer insulating film layer to form a primary coil, wherein the layer insulating film layer is the primary coil winding. A transformer for an instrument, characterized in that a heat-resistant insulating film having a higher heat resistance than that of an intermediate layer insulating film is used as a layer insulating film on the surface of the layer in contact with.
てポリイミドフィルムが使用されていることを特徴とす
る請求項１に記載の計器用変圧器。2. The transformer for an instrument according to claim 1, wherein a polyimide film is used as the layer insulating film on the layer surface.
リエステルフィルムが使用されていることを特徴とする
請求項１または２に記載の計器用変圧器。3. The instrument transformer according to claim 1, wherein a polyester film is used as a layer insulating film in the middle of the layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6290953A JPH08148348A (en) | 1994-11-25 | 1994-11-25 | Voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6290953A JPH08148348A (en) | 1994-11-25 | 1994-11-25 | Voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08148348A true JPH08148348A (en) | 1996-06-07 |
Family
ID=17762615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6290953A Withdrawn JPH08148348A (en) | 1994-11-25 | 1994-11-25 | Voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08148348A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003036665A1 (en) * | 2001-10-24 | 2003-05-01 | Matsushita Electric Industrial Co., Ltd. | Low-profile transformer and method of manufacturing the transformer |
| JP2009206254A (en) * | 2008-02-27 | 2009-09-10 | Tokuden Co Ltd | Abutment type dry transformer |
-
1994
- 1994-11-25 JP JP6290953A patent/JPH08148348A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003036665A1 (en) * | 2001-10-24 | 2003-05-01 | Matsushita Electric Industrial Co., Ltd. | Low-profile transformer and method of manufacturing the transformer |
| US6859130B2 (en) | 2001-10-24 | 2005-02-22 | Matsushita Electric Industrial Co., Ltd. | Low-profile transformer and method of manufacturing the transformer |
| CN100403462C (en) * | 2001-10-24 | 2008-07-16 | 松下电器产业株式会社 | Low-profile transformer and method of manufacturing the transformer |
| JP2009206254A (en) * | 2008-02-27 | 2009-09-10 | Tokuden Co Ltd | Abutment type dry transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020205 |