JP2501605Y2 - Device for connecting coils between mold transformers - Google Patents

Device for connecting coils between mold transformers

Info

Publication number
JP2501605Y2
JP2501605Y2 JP7796190U JP7796190U JP2501605Y2 JP 2501605 Y2 JP2501605 Y2 JP 2501605Y2 JP 7796190 U JP7796190 U JP 7796190U JP 7796190 U JP7796190 U JP 7796190U JP 2501605 Y2 JP2501605 Y2 JP 2501605Y2
Authority
JP
Japan
Prior art keywords
coil
conductor
molded
mold
tapered hole
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
Application number
JP7796190U
Other languages
Japanese (ja)
Other versions
JPH0436213U (en
Inventor
正次 斉藤
喬 芦沢
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.)
Meidensha Corp
Original Assignee
Meidensha Corp
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 Meidensha Corp filed Critical Meidensha Corp
Priority to JP7796190U priority Critical patent/JP2501605Y2/en
Publication of JPH0436213U publication Critical patent/JPH0436213U/ja
Application granted granted Critical
Publication of JP2501605Y2 publication Critical patent/JP2501605Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Coils Of Transformers For General Uses (AREA)

Description

【考案の詳細な説明】 A.産業上の利用分野 本考案はモールド変圧器のコイル間接続装置に関す
る。
[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a coil-to-coil connecting device for a molded transformer.

B.考案の概要 本考案はモールド変圧器のコイル間接続を大気中に露
出させることなくプレモールド接続体で気密を保って接
続するとともに、モールド変圧器の表面を完全に接地層
で覆い、他の構造物との間の安全絶縁距離を短縮して設
置面積を縮小化し、且つ耐環境性の向上をはかったもの
である。
B. Outline of the Invention The present invention connects the coil-to-coil connection of the mold transformer while keeping it airtight with a premolded connection body without exposing it to the atmosphere, and completely covers the surface of the mold transformer with a ground layer. The safety insulation distance from the structure is shortened to reduce the installation area and the environment resistance is improved.

C.従来の技術 モールド変圧器は、コイルを合成樹脂でモールドして
絶縁層を形成し各相高圧コイル間の接続は、モールド外
部にリード線を引き出して行っている。第4図,第5図
はかかるモールド変圧器の従来例を示し、これらの図に
おいて、1は鉄心,2はモールドコイル,3は各相コイル間
の接続導体4用の端子で、接続導体4は各相コイルの一
端を外部接続して星形接続における中性点を形成してい
る。5はケーブル6の接続端子,7は低圧端子である。そ
して、以上に述べたモールド変圧器は接地金属ケースに
収納して設置するか、充分な絶縁空間を保って柵を設
け、立入禁止の立札を立てるなどして設置していたか
ら、設置面積はモールド変圧器の床面積に比し、数倍の
広いものとなっていた。
C. Conventional technology In a molded transformer, a coil is molded with synthetic resin to form an insulating layer, and high-voltage coils for each phase are connected by drawing lead wires outside the mold. 4 and 5 show conventional examples of such molded transformers. In these figures, 1 is an iron core, 2 is a molded coil, 3 is a terminal for a connecting conductor 4 between phase coils, and the connecting conductor 4 Externally connects one end of each phase coil to form a neutral point in a star connection. Reference numeral 5 is a connection terminal of the cable 6, and 7 is a low voltage terminal. The mold transformer described above was either installed in a grounded metal case or installed with a fence with a sufficient insulation space and a stand-off sign to set up the mold transformer. It was several times wider than the floor area of the vessel.

D.考案が解決しようとする課題 ビル火災が社会問題化されている昨今においては、絶
縁の信頼性,防災性,冠水,保守性に優れたモールド変
圧器が多く使用されるようになってきており、特に地価
が高騰し、建設費が嵩む市街地のビル用変電設備におい
ては、新設,更新にかかわらず設置面積の最小化が求め
られている。
D. Issues to be solved by the invention In recent years when building fires have become a social problem, mold transformers with excellent insulation reliability, disaster prevention, flooding, and maintainability have come into wide use. In particular, in substation facilities for buildings in urban areas where land prices are soaring and construction costs are high, it is required to minimize the installation area regardless of new construction or renewal.

このような要請に対応するためにモールドコイルの表
面を導電処理して接地し、モールド変圧器全体を接地層
で覆うことにより、他の構造物との間の絶縁距離を短縮
して接置面積の縮小化をはかることは一応考えられる
が、その際に端子部分等高圧露出導電部の処理が問題と
なる。本考案はこの各相コイル間の接続装置を改良せん
とするものである。
In order to meet such demands, the surface of the mold coil is treated to be conductive and grounded, and the entire mold transformer is covered with a ground layer to shorten the insulation distance from other structures and reduce the contact area. Although it is conceivable to reduce the size, it is a problem to process the high-voltage exposed conductive parts such as terminals. The present invention aims to improve the connection device between the coils of each phase.

E.課題を解決するための手段 本考案における上記課題を解決するための手段は、コ
イルを合成樹脂でモールドし、該モールドコイルの表面
に接地層を施してなるモールド変圧器において、 前記モールドコイルの側方に該モールドと一体にモー
ルド形成した接続導体端子部を設け、該接続導体端子部
にコイル側に向けて小径となるテーパ孔を設けてその奥
に高圧コイルと接続された導体連結部を設けるととも
に、別個にコイル間を接続する接続導体を合成樹脂でモ
ールドし、前記テーパ孔に対向する部位に、該テーパ孔
に嵌合するテーパ状の嵌入部を設けてこの嵌入部の先端
に前記接続導体の接続端を突出させてプレモールド接続
体を形成し、且つこのプレモールド接続体の外表面に接
地層を施し、該プレモールド接続体の嵌入部と前記テー
パ孔とを弾性絶縁体を介して嵌合し、前記接続導体の接
続端を前記導体連結部に接続してプレモールド接続体を
前記接続導体部に取り付けたことを特徴とする。
E. Means for Solving the Problem The means for solving the above-mentioned problems in the present invention is a mold transformer in which a coil is molded with a synthetic resin, and a ground layer is provided on the surface of the mold coil. A connecting conductor terminal portion integrally formed with the mold is provided on the side of, and a taper hole having a smaller diameter toward the coil side is provided in the connecting conductor terminal portion, and a conductor connecting portion connected to the high-voltage coil is provided in the back. In addition, a connecting conductor for separately connecting the coils is molded with a synthetic resin, and a tapered fitting portion that fits into the tapered hole is provided at a portion facing the tapered hole, and a tip end of the fitting portion is provided. The connecting end of the connecting conductor is projected to form a premolded connecting body, and a ground layer is provided on the outer surface of the premolded connecting body, and the fitting portion of the premolded connecting body and the taper are formed. The hole is fitted through an elastic insulator, the connecting end of the connecting conductor is connected to the conductor connecting portion, and the premolded connecting body is attached to the connecting conductor portion.

F.作用 モールドコイル表面,各相コイル間を接続するプレモ
ールド接続体表面,および接続導体端子部は接地層で完
全に被覆され、且つ接続導体端子部は弾性絶縁体により
気密に保持される。
F. Function The surface of the mold coil, the surface of the pre-molded connector that connects the coils of each phase, and the connecting conductor terminal are completely covered with the ground layer, and the connecting conductor terminal is hermetically held by the elastic insulator.

G.実施例 第1図,第2図は本考案の一実施例を示す図で、第1
図はモールド変圧器の正面図、第2図は各相コイル間の
接続導体端子部の断面図である。
G. Embodiment FIGS. 1 and 2 show an embodiment of the present invention.
The drawing is a front view of the molded transformer, and FIG. 2 is a cross-sectional view of a connecting conductor terminal portion between each phase coil.

第1図,第2図において1は鉄心,8はモールドコイル
で、81は高圧側コイル、82はモールド樹脂,83はモール
ド樹脂82の表面を導電処理して接地した接地層,9はモー
ルドコイル8に突出して設けた各相コイル間の接続導体
端子部で、この接続導体端子部9には、コイル側に向け
たテーパ孔92が設けられている。テーパ孔92の奥には、
高圧側コイル81の一端が接続された導体連結部10が備え
られ、その表面は接地層91で覆われている。93は埋金,9
4は逃げ部である。11は各相間を接続するプレモールド
接続体で、接続導体12を合成樹脂でモールド絶縁して形
成し、前記テーパ孔92に対向する部位に、該テーパ孔92
に嵌合する円錐台形の突起した嵌入部11aが設けられて
いる。そして嵌入部11aの先端には接続導体12の端部が
突出して、導体連結部10に挿入される。また、このプレ
モールド接続体11の外表面は接地層13で覆われている。
14は弾性絶縁体で例えばゴム質から成り、嵌入部11aと
ほぼ同じ円錐形の所謂コーン形カップ状をなし、広径側
に外周方向に向けたフランジを有する。嵌入部11aがテ
ーパ孔92に嵌合するときに嵌入部11aにこの弾性絶縁体1
4を装着してテーパ孔92に嵌合する。15はプレモールド
接続体11を前記端子部9に締め付けるボルト,ナットで
ある。
In FIGS. 1 and 2, 1 is an iron core, 8 is a mold coil, 81 is a high voltage side coil, 82 is a mold resin, 83 is a ground layer in which the surface of the mold resin 82 is conductively treated and grounded, and 9 is a mold coil. In the connecting conductor terminal portion between the phase coils provided so as to project on 8, the connecting conductor terminal portion 9 is provided with a tapered hole 92 facing the coil side. Behind the tapered hole 92,
The conductor connecting portion 10 to which one end of the high voltage side coil 81 is connected is provided, and the surface thereof is covered with the ground layer 91. 93 is burial, 9
4 is an escape area. Reference numeral 11 denotes a pre-molded connecting body for connecting the respective phases, which is formed by mold-insulating the connecting conductor 12 with a synthetic resin, and the tapered hole 92 is formed at a portion facing the tapered hole 92.
A conical trapezoidal protruding fitting portion 11a that fits in is provided. The end of the connecting conductor 12 projects from the tip of the fitting portion 11a and is inserted into the conductor connecting portion 10. Further, the outer surface of the premolded connector 11 is covered with the ground layer 13.
Reference numeral 14 denotes an elastic insulator, which is made of, for example, a rubber material, has a so-called cone-shaped cup shape that is substantially the same as the fitting portion 11a, and has a flange directed toward the outer circumference on the wide diameter side. When the fitting portion 11a is fitted into the tapered hole 92, the elastic insulator 1 is attached to the fitting portion 11a.
4 is fitted and fitted into the tapered hole 92. Reference numeral 15 denotes bolts and nuts for fastening the premolded connection body 11 to the terminal portion 9.

このように各相コイル間の接続導体12は、外表面に接
地層13が施されたプレモールド接続体11に埋設されてい
るから、モールド変圧器の表面はすべて接地層で覆われ
ることになる。また、接続導体12を連結部10に挿入して
ナット15を締め付けると、プレモールド接続体11の円錐
台形の嵌入部は弾性絶縁体14を介してテーパ孔92に気密
を保って嵌入されるから塵埃をはじめとして腐食性のガ
スや水分等が連結部10に侵入することは無く、水害によ
りモールド変圧器が水没してもその後の復旧作業は極め
て容易となる。
In this way, the connecting conductor 12 between the coils of each phase is embedded in the premolded connection body 11 having the ground layer 13 on the outer surface, so that the entire surface of the mold transformer is covered with the ground layer. . Further, when the connecting conductor 12 is inserted into the connecting portion 10 and the nut 15 is tightened, the frustoconical fitting portion of the premolded connecting body 11 is fitted into the tapered hole 92 via the elastic insulator 14 while keeping airtightness. No corrosive gas, moisture, etc., such as dust, will enter the connecting portion 10, and subsequent restoration work will be extremely easy even if the mold transformer is submerged due to water damage.

第3図は他の実施例を示す図で、第2図におけるプレ
モールド接続体11を端子部9に締め付けるのに用いた植
込ボルトとダブルナット15に代えて皿ばね16を介してボ
ルト17で締め付けたもので弾性絶縁体14が劣化するなど
して弾圧力が変化しても、皿ばねの弾性復元力により締
付力を一定に保つようにしものである。
FIG. 3 is a view showing another embodiment. Instead of the studs and double nuts 15 used to fasten the pre-molded connection body 11 to the terminal portion 9 in FIG. Even if the elastic insulator 14 is deteriorated by being tightened by, and the elastic force is changed, the tightening force is kept constant by the elastic restoring force of the disc spring.

また、以上では各相コイルを 接続する場合について説明したが△接続とする場合も、
各相コイルの巻き始めと巻き終わりを端子部から引き出
し、プレモールド接続体の内部で結線することにより本
考案を適用するとができる。
In the above, each phase coil is I explained the case of connecting, but also when connecting △,
The present invention can be applied by pulling out the winding start and the winding end of each phase coil from the terminal portion and connecting them inside the premolded connection body.

また、当然のことながらテーパ孔の深さ、テーパ,圧
接荷重を適切に選ぶことにより種々の電圧階級に対応す
ることができる。
Further, as a matter of course, it is possible to cope with various voltage classes by appropriately selecting the depth of the tapered hole, the taper, and the pressure contact load.

H.考案の効果 本考案に係るモールド変圧器用各相コイル間の接続導
体端子は、表面を接地層で覆ったプレモールド接続体の
円錐台形部を、表面を接地層で覆ったモールドコイル端
子部のテーパ孔に弾性絶縁体を介して気密に嵌入し、前
記プレモールド接続体に埋設された接続導体を前記テー
パ孔の奥に設けられた導体連結部に接続するものである
から、安全柵を設けたり接地金属ケース等に収納するこ
となく、他の構造物に接近させて直接モールド変圧器を
設置することができて、その設置面積を最小にすること
ができ、また、導体連結部に塵埃をはじめ腐食性ガスや
水分が侵入することを防止し、水害時の復旧を容易にす
る等、優れた安全性や耐環境性を有して、且つ、設置面
積を最小にするという実用的効果を奏するものである。
H. Effect of the Invention The connecting conductor terminal between the coils for each phase of the mold transformer according to the present invention is a mold coil terminal part in which the frustoconical part of the pre-molded connector whose surface is covered with a ground layer and the surface is covered with a ground layer. The air-tight fit into the taper hole of the above through an elastic insulator, and the connection conductor embedded in the pre-molded connection body is connected to the conductor connecting portion provided in the back of the taper hole. It is possible to install the molded transformer directly in close proximity to other structures without installing it or housing it in a grounded metal case, etc., to minimize the installation area, and to prevent dust on the conductor connection part. It has excellent safety and environment resistance, such as preventing ingress of corrosive gas and moisture, and facilitating recovery from water damage, and also has a practical effect of minimizing the installation area. Is played.

【図面の簡単な説明】[Brief description of drawings]

第1図,第2図は本考案の一実施例を示す図で、第1図
はモールド変圧器の正面図、第2図は各相コイル間の接
続導体端子の断面図、また、第3図は本考案の他の実施
例を示す図である。第4図,第5図は従来例を示すモー
ルド変圧器の正面図と側面図である。 8……モールドコイル、9……接続導体端子部、10……
導体連結部、11……プレモールド接続体、12……接続導
体、13,83,91……接地層、14……弾性絶縁体、92……テ
ーパ孔。
1 and 2 are views showing an embodiment of the present invention. FIG. 1 is a front view of a molded transformer, FIG. 2 is a cross-sectional view of a connecting conductor terminal between phase coils, and FIG. The figure shows another embodiment of the present invention. 4 and 5 are a front view and a side view of a molded transformer showing a conventional example. 8: Mold coil, 9: Connection conductor terminal, 10 ...
Conductor connecting part, 11 …… Pre-molded connector, 12 …… Connecting conductor, 13,83,91 …… Grounding layer, 14 …… Elastic insulator, 92 …… Tapered hole.

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of utility model registration request] 【請求項1】コイルを合成樹脂でモールドし、該モール
ドコイルの表面に接地層を施してなるモールド変圧器に
おいて、 前記モールドコイルの側方に該モールドと一体にモール
ド形成した接続導体端子部を設け、該接続導体端子部に
コイル側に向けて小径となるテーパ孔を設けてその奥に
高圧コイルと接続された導体連結部を設けるとともに、
別個にコイル間を接続する接続導体を合成樹脂でモール
ドし、前記テーパ孔に対向する部位に、該テーパ孔に嵌
合するテーパ状の嵌入部を設けてこの嵌入部の先端に前
記接続導体の接続端を突出させてプレモールド接続体を
形成し、且つこのプレモールド接続体の外表面に接地層
を施し、該プレモールド接続体の嵌入部と前記テーパ孔
とを弾性絶縁体を介して嵌合し、前記接続導体の接続端
を前記導体連結部に接続してプレモールド接続体を前記
接続導体部に取り付けたことを特徴とするモールド変圧
器のコイル間接続装置。
1. A mold transformer comprising a coil molded with a synthetic resin and a ground layer provided on the surface of the molded coil, wherein a connection conductor terminal portion integrally formed with the mold is formed on a side of the molded coil. The connecting conductor terminal portion is provided with a tapered hole having a small diameter toward the coil side, and a conductor connecting portion connected to the high-voltage coil is provided at the back of the tapered hole.
Separately, a connecting conductor for connecting the coils is molded with a synthetic resin, and a tapered fitting portion that fits into the tapered hole is provided at a portion facing the tapered hole, and a tip of the connecting conductor of the connecting conductor is provided at a tip of the fitting portion. The connection end is projected to form a premolded connection body, and the outer surface of the premolded connection body is provided with a ground layer, and the fitting portion of the premolded connection body and the tapered hole are fitted via an elastic insulator. In addition, the inter-coil connecting device of the mold transformer, wherein the connecting end of the connecting conductor is connected to the conductor connecting portion and the premolded connecting body is attached to the connecting conductor portion.
JP7796190U 1990-07-23 1990-07-23 Device for connecting coils between mold transformers Expired - Lifetime JP2501605Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7796190U JP2501605Y2 (en) 1990-07-23 1990-07-23 Device for connecting coils between mold transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7796190U JP2501605Y2 (en) 1990-07-23 1990-07-23 Device for connecting coils between mold transformers

Publications (2)

Publication Number Publication Date
JPH0436213U JPH0436213U (en) 1992-03-26
JP2501605Y2 true JP2501605Y2 (en) 1996-06-19

Family

ID=31620814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7796190U Expired - Lifetime JP2501605Y2 (en) 1990-07-23 1990-07-23 Device for connecting coils between mold transformers

Country Status (1)

Country Link
JP (1) JP2501605Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4660313B2 (en) * 2005-08-02 2011-03-30 株式会社東芝 Mold coil tap changer

Also Published As

Publication number Publication date
JPH0436213U (en) 1992-03-26

Similar Documents

Publication Publication Date Title
US7301096B2 (en) Insulator for energized terminal of electrical device
JP2501605Y2 (en) Device for connecting coils between mold transformers
JP2539790Y2 (en) High voltage terminal for molded transformer
US4985599A (en) Transformer bushing cap
JP3520181B2 (en) Mold type current transformer
JP2586995Y2 (en) Through bushing
JPS5930577Y2 (en) Magnetic levitation railway ground coil connection device
JPH0811023Y2 (en) Air end
JPS5832449Y2 (en) Cable entry part for pole-mounted switch
JPH0140564B2 (en)
JPH0757930A (en) Floating coil terminal and joint thereof with power cable
JPS6021910Y2 (en) Lightning arrester
JPS6145691Y2 (en)
JP2920476B2 (en) Termination connection or termination structure for high voltage bypass cable
JPH0130808Y2 (en)
JP2001280563A (en) Insulating joint for gas piping
JP3026524B2 (en) Cable termination connection
JPH073769Y2 (en) Bypass cable with ground wire
JPH0516861Y2 (en)
JPS6015386Y2 (en) Cable grounding part
JPS6317009Y2 (en)
JPS6015387Y2 (en) Cable grounding part
JPS5841739Y2 (en) Molded electrical equipment
JPH0722074Y2 (en) Equipment for protection of distribution lines
JPS6340838Y2 (en)