JPH03101204A - Instrument transformer - Google Patents
Instrument transformerInfo
- Publication number
- JPH03101204A JPH03101204A JP1238697A JP23869789A JPH03101204A JP H03101204 A JPH03101204 A JP H03101204A JP 1238697 A JP1238697 A JP 1238697A JP 23869789 A JP23869789 A JP 23869789A JP H03101204 A JPH03101204 A JP H03101204A
- Authority
- JP
- Japan
- Prior art keywords
- fuse
- transformer
- stress cone
- fuse case
- attached
- 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
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ガス絶縁配電盤又は固体絶縁配電盤等に設
置される、ヒユーズ付の引出形言４器用変圧器に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a draw-out quadruple transformer with a fuse, which is installed in a gas-insulated switchboard or a solid-insulated switchboard.
第２図は従来例の部分断面図であって実開昭６０−１５
１２０５号公報に開示されたものである。Figure 2 is a partial sectional view of a conventional example, which was developed in 1986.
This is disclosed in Japanese Patent No. 1205.
図において、移動台車８に搭載される計器用の変圧器１
７の外被は変圧器１７上に水平に配するヒユーズケース
１８と絶縁樹脂で一体にモールド成形さる。ヒユーズケ
ース１８の中にヒユーズ１９を収納し、その一端には母
線または負荷ケーブルに着脱自在に接続するための可動
接触子２０を突出させて取付け、この可動接触子２０を
絶縁カバー２０１で覆っている。ヒユーズケース内の一
端には可動接触子２０に接続したヒユーズクリップ２１
が取付けられ、他方端には変圧器の巻線に接続したヒユ
ーズクリップ２２がヒユーズケース１８の端部に着脱自
在に取付けられる。絶縁キャップ２３はヒユーズクリッ
プ２２を覆ってヒユーズケース端面に着脱自在に取付け
られる。ヒユーズ１９はヒユーズクリップ２１と２２と
にかけ渡して取付けられる。In the figure, an instrument transformer 1 mounted on a mobile trolley 8
The outer cover 7 is integrally molded with a fuse case 18 disposed horizontally on the transformer 17 using an insulating resin. A fuse 19 is housed in a fuse case 18, and a movable contact 20 for removably connecting to a bus bar or load cable is attached to one end of the fuse case 18, and the movable contact 20 is covered with an insulating cover 201. There is. At one end inside the fuse case is a fuse clip 21 connected to a movable contactor 20.
is attached to the other end of the fuse case 18, and a fuse clip 22 connected to the winding of the transformer is detachably attached to the end of the fuse case 18. The insulating cap 23 covers the fuse clip 22 and is detachably attached to the end face of the fuse case. The fuse 19 is attached by spanning the fuse clips 21 and 22.
ヒユーズ１９をヒユーズケース１８内に取付けるには、
絶縁キャップ２３およびヒユーズクリップ２２を取外し
、ヒユーズ１９をケース内に挿入して、その一端をヒユ
ーズクリップ２１にはめ込み、他端にヒユーズクリップ
２２をはめ込んで、クリップ２２をケース端に固定した
うえ絶縁キャップ２３を取付ける。To install the fuse 19 inside the fuse case 18,
Remove the insulating cap 23 and fuse clip 22, insert the fuse 19 into the case, fit one end of it into the fuse clip 21, fit the fuse clip 22 to the other end, fix the clip 22 to the edge of the case, and then remove the insulating cap. Install 23.
前記の従来の技術によれば、引出形計器用変圧器の外被
がヒユーズケースと一体にｖＡｌＩ！樹脂でモールド成
形されるので、碍子、相間バリヤが不要で部品点数が減
りコンパクトで配電盤への取付はスペースが縮小され、
また導電部が露出しないので人間や小動物が感電する危
険性が減小する。According to the above-mentioned conventional technology, the outer cover of the draw-out type voltage transformer is integrally formed with the fuse case. Since it is molded with resin, there is no need for insulators or interphase barriers, the number of parts is reduced, and it is compact and requires less space for installation on a switchboard.
Furthermore, since the conductive part is not exposed, the risk of electric shock to humans and small animals is reduced.
しかし、基本的には気中絶縁方式で構成されているので
、長期間の使用後にはヒユーズケースの外側に接触する
ことは危険であり、ヒユーズを交換するためのキャップ
部分の絶縁も不充分である。However, since it is basically constructed using an air insulation method, it is dangerous to come into contact with the outside of the fuse case after long-term use, and the insulation of the cap part for replacing the fuse is also insufficient. be.
この発明の目的は、キャップの絶縁耐力を向上させ、ヒ
ユーズケースの外側表面に積極的に接地層を設けること
ができる引出形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 a draw-out type voltage transformer in which the dielectric strength of the cap is improved and a ground layer can be actively provided on the outer surface of the fuse case.
この発明の引出形計器用変圧器は、
変圧器の外被と、この変圧器の上部に取付けるヒユーズ
ケースとを絶縁樹脂で一体にモールド成形し、前記ヒユ
ーズケースの一端に可動接触子を設け、前記ヒユーズケ
ース内の両端にそれぞれ前記可動接触子につながるヒユ
ーズクリップと、変圧器の巻線につながるヒユーズクリ
ップとを取付け、これらのクリップにヒユーズを着脱自
在に取付けてなる引出形計器用変圧器において、前記ヒ
ユーズケースの他端に外部に広がるテーバ状の筒状体を
一体形成し、この筒状体の内側に筒状のストレスコーン
を装着し、このストレスコーンの内側に軸方向に圧入し
て前記ストレスコーンを半径方向に圧縮する絶縁材から
なる軸棒を押し込み、前記筒状体の他端面に着脱自在に
固定されるキャップで前記軸棒を押し込み、前記モール
ド成形の絶縁樹脂の外表面に接地層を設けて接地するも
のである。The draw-out type instrument transformer of the present invention includes the following steps: an outer cover of the transformer and a fuse case attached to the upper part of the transformer are integrally molded with an insulating resin, and a movable contact is provided at one end of the fuse case. In the drawer type instrument transformer, a fuse clip connected to the movable contact and a fuse clip connected to the winding of the transformer are attached to both ends of the fuse case, respectively, and a fuse is detachably attached to these clips. , a tapered cylindrical body extending outward is integrally formed at the other end of the fuse case, a cylindrical stress cone is attached to the inside of this cylindrical body, and the stress cone is press-fitted in the axial direction. A shaft rod made of an insulating material that compresses the stress cone in the radial direction is pushed in, and a cap removably fixed to the other end surface of the cylindrical body is used to push the shaft rod into the outer surface of the molded insulating resin. It is grounded by providing a ground layer.
ストレスコーンはケーブルの終端接続において、コンデ
ンサコーンとともによく使用されるものであり、例えば
エチレンプロピレンゴムをベースにして電界緩和のため
にカーボンを混入した材料からなる。Stress cones are often used together with capacitor cones in cable terminations, and are made of, for example, a material based on ethylene propylene rubber mixed with carbon for electric field relaxation.
このストレスコーンをヒユーズケースの他端の外部に広
がるテーバ状の筒状体に装着し、軸棒を内側から押し込
めばストレスコーンの内外面が軸棒と筒状体とに圧着す
るから絶縁耐力が維持される。したがって、絶縁樹脂で
一体成形された変圧器の外被とヒユーズケースとの外表
面に接地層を設けて接地することができ、前記外表面を
手で触れても安全である。This stress cone is attached to the tapered cylindrical body that extends outside the other end of the fuse case, and when the shaft rod is pushed in from the inside, the inner and outer surfaces of the stress cone are crimped against the shaft rod and the cylindrical body, increasing the dielectric strength. maintained. Therefore, a grounding layer can be provided on the outer surfaces of the transformer jacket and the fuse case, which are integrally molded with insulating resin, to be grounded, and it is safe to touch the outer surfaces with hands.
第１図は実施例の部分断面図であって、従来例と同一符
号を付けるものはおよそ同一機能を持ち、以下では説明
を省（こともある。FIG. 1 is a partial cross-sectional view of the embodiment, and parts having the same reference numerals as those in the conventional example have approximately the same functions, and their explanations may be omitted below.
図において、変圧器１７の外被と、この変圧器の上部に
取付けるヒユーズケース２８とを絶縁樹脂で一体にモー
ルド成形し、前記ヒユーズケース２８の一端に可動接触
子２を設ける。前記ヒユーズケース２８内の両端にそれ
ぞれ前記可動接触子２につながるヒユーズクリップ２１
と、変圧器の巻線につながるヒユーズクリップ２２とを
取付け、これらのクリップにヒユーズ１９を着脱自在に
取付ける。In the figure, the outer cover of a transformer 17 and a fuse case 28 attached to the upper part of the transformer are integrally molded with an insulating resin, and a movable contact 2 is provided at one end of the fuse case 28. Fuse clips 21 are connected to the movable contactor 2 at both ends of the fuse case 28, respectively.
and a fuse clip 22 connected to the winding of the transformer, and the fuse 19 is detachably attached to these clips.
前記ヒユーズケース２８の他端に外部に広がるテーバ状
の筒状体２８ａを一体形成し、この筒状体２８ａの内側
に筒状のストレスコーン３を装着する。このストレスコ
ーン３の内側に軸方向に圧入して前記ストレスコーン３
を半径方向に圧縮する絶縁材からなる軸棒４を押し込み
、前記筒状体２８ａの他端面に着脱自在にねじ５ａで固
定されるキャップ５で前記軸棒４を押し込むようにする
。A tapered cylindrical body 28a extending outward is integrally formed at the other end of the fuse case 28, and a cylindrical stress cone 3 is mounted inside this cylindrical body 28a. The stress cone 3 is press-fitted into the inside of the stress cone 3 in the axial direction.
A shaft rod 4 made of an insulating material that compresses the cylindrical body 28a in the radial direction is pushed in, and a cap 5 detachably fixed to the other end surface of the cylindrical body 28a with a screw 5a is used to push the shaft rod 4 in.
前記ストレスコーン３はケーブルの終端接続において、
コンデンサコーンとともによ（使用される公知のもので
あって、例えばエチレンプロピレンゴムをベースにして
電界緩和用のためにカーボンを混入した材料からなる。The stress cone 3 is used at the end connection of the cable.
It is a well-known material used in conjunction with a capacitor cone, and is made of, for example, an ethylene propylene rubber-based material mixed with carbon for electric field mitigation.
このストレスコーン３は軸棒４で内外面が圧着し絶縁耐
力が維持されるので、前記モールド成形の絶縁樹脂の外
表面に導電性塗料等で接地層６を設けることができ、接
地線７で接地する。Since the inner and outer surfaces of this stress cone 3 are crimped by the shaft rod 4 and the dielectric strength is maintained, a grounding layer 6 can be provided on the outer surface of the molded insulating resin with conductive paint or the like, and the grounding wire 7 Ground.
なお、可動接触子２は従来例と同じ可動接触子２０でも
よい。Note that the movable contact 2 may be the same movable contact 20 as in the conventional example.
この発明の引出形計器用変圧器は、
ヒユーズケースの他端に外部に広がるテーバ状の筒状体
を一体形成し、この筒状体の内側に筒状のストレスコー
ンを装着し、このストレスコーンの内側に軸方向に圧入
して前記ストレスコーンを半径方向に圧縮する絶縁材か
らなる軸棒を押し込み、前記筒状体の他端面に着脱自在
に固定されるキャップで前記軸棒を押し込み、前記モー
ルド成形の絶縁樹脂の外表面に接地層を設けて接地する
ようにしたので、
圧着されるストレスコーンによって絶縁耐力が向上し、
キャップを含めてモールド成形の絶縁樹脂の外表面に接
地層を設けて接地することができ、ヒユーズ１９の着脱
が安全になるという効果がある。The draw-out type instrument transformer of the present invention includes a tapered cylindrical body that extends outwardly at the other end of the fuse case, a cylindrical stress cone is attached to the inside of this cylindrical body, and the stress cone A shaft rod made of an insulating material is press-fitted into the inside of the cylindrical body in the axial direction to compress the stress cone in the radial direction. Since a ground layer is provided on the outer surface of the molded insulating resin to ground it, the stress cone that is crimped improves dielectric strength.
A grounding layer can be provided on the outer surface of the molded insulating resin including the cap, so that the fuse 19 can be attached and detached safely.
第１図は実施例の部分断面図、第２図は従来例の部分断
面図である。FIG. 1 is a partial sectional view of the embodiment, and FIG. 2 is a partial sectional view of the conventional example.
Claims (1)
ーズケースとを絶縁樹脂で一体にモールド成形し、前記
ヒューズケースの一端に可動接触子を設け、前記ヒュー
ズケース内の両端にそれぞれ．前記可動接触子につなが
るヒューズクリップと、変圧器の巻線につながるヒュー
ズクリップとを取付け、これらのクリップにヒューズを
着脱自在に取付けてなる引出形計器用変圧器において、
前記ヒューズケースの他端に外部に広がるテーパ状の筒
状体を一体形成し、この筒状体の内側に筒状のストレス
コーンを装着し、このストレスコーンの内側に軸方向に
圧入して前記ストレスコーンを半径方向に圧縮する絶縁
材からなる軸棒を押し込み、前記筒状体の他端面に着脱
自在に固定されるキャップで前記軸棒を押し込み、前記
モールド成形の絶縁樹脂の外表面に接地層を設けて接地
することを特徴とする引出形計器用変圧器。1) The outer cover of the transformer and the fuse case attached to the top of the transformer are integrally molded with insulating resin, a movable contact is provided at one end of the fuse case, and a movable contact is provided at each end of the fuse case. A draw-out type instrument transformer in which a fuse clip connected to the movable contact and a fuse clip connected to the winding of the transformer are attached, and a fuse is detachably attached to these clips,
A tapered cylindrical body expanding outward is integrally formed at the other end of the fuse case, a cylindrical stress cone is attached to the inside of this cylindrical body, and the stress cone is press-fitted in the axial direction. A shaft rod made of an insulating material that compresses the stress cone in the radial direction is pushed in, and a cap that is removably fixed to the other end surface of the cylindrical body is pushed into the shaft rod so that it comes into contact with the outer surface of the molded insulating resin. A draw-out type instrument transformer characterized by being grounded by providing a stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1238697A JPH03101204A (en) | 1989-09-14 | 1989-09-14 | Instrument transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1238697A JPH03101204A (en) | 1989-09-14 | 1989-09-14 | Instrument transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03101204A true JPH03101204A (en) | 1991-04-26 |
Family
ID=17033955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1238697A Pending JPH03101204A (en) | 1989-09-14 | 1989-09-14 | Instrument transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03101204A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723187A (en) * | 2012-07-10 | 2012-10-10 | 浙江天际互感器有限公司 | Voltage transformer with elbow-type plug |
| CN103295752A (en) * | 2013-06-04 | 2013-09-11 | 衡阳一互电气有限公司 | Voltage transformer with fuse protection function used in C-GIS (cubicle gas insulated switchgear) of rail transit |
-
1989
- 1989-09-14 JP JP1238697A patent/JPH03101204A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723187A (en) * | 2012-07-10 | 2012-10-10 | 浙江天际互感器有限公司 | Voltage transformer with elbow-type plug |
| CN103295752A (en) * | 2013-06-04 | 2013-09-11 | 衡阳一互电气有限公司 | Voltage transformer with fuse protection function used in C-GIS (cubicle gas insulated switchgear) of rail transit |
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