JPH0645264Y2 - Cable head voltage detection structure - Google Patents
Cable head voltage detection structureInfo
- Publication number
- JPH0645264Y2 JPH0645264Y2 JP1987003229U JP322987U JPH0645264Y2 JP H0645264 Y2 JPH0645264 Y2 JP H0645264Y2 JP 1987003229 U JP1987003229 U JP 1987003229U JP 322987 U JP322987 U JP 322987U JP H0645264 Y2 JPH0645264 Y2 JP H0645264Y2
- Authority
- JP
- Japan
- Prior art keywords
- detection
- semi
- metal fitting
- fitting
- insulator
- 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
- Testing Relating To Insulation (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Transformers For Measuring Instruments (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は検電棒による検電操作を容易にし、かつ、検電
層の静電容量の増加を図ったケーブルヘッド検電構造に
関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cable head detection structure that facilitates the detection operation by a detection rod and increases the capacitance of the detection layer.
従来のケーブルヘッド検電構造として、例えば、特開昭
61-191008号公報に示されるものがある。このケーブル
ヘッド検電構造は開閉器口出部のケーブルヘッド絶縁体
上にシールド層と隔離された検電層を設け、この検電層
上の検電電極に検電棒を接触させて検電し、かつ、この
検電電極に検電キャップを嵌合することにより検電層を
零相電圧検出用電極に接続して地絡事故等を検出するよ
うにしている。A conventional cable head detecting structure is disclosed in
There is one disclosed in Japanese Patent No. 61-191008. This cable head voltage detection structure provides a voltage detection layer isolated from the shield layer on the cable head insulator at the switch outlet, and a voltage detection electrode on this voltage detection layer is contacted with a voltage detection rod to detect voltage. Moreover, by fitting a detection cap to the detection electrode, the detection layer is connected to the zero-phase voltage detection electrode to detect a ground fault or the like.
しかし、従来のケーブルヘッド検電構造によれば、検電
電極は検電カバー本体に形成された案内孔の底部に位置
しているため、検電棒による検電操作が比較的困難であ
り、また、検電層の面積が比較的小さく、かつ、絶縁体
の厚さを薄くすることができないため、十分な静電容量
が得られないという不都合がある。However, according to the conventional cable head detection structure, since the detection electrode is located at the bottom of the guide hole formed in the main body of the detection cover, it is relatively difficult to perform the detection operation with the detection rod. However, since the area of the detection layer is relatively small and the thickness of the insulator cannot be reduced, there is a disadvantage that sufficient capacitance cannot be obtained.
本考案は上記に鑑みてなされたものであり、検電操作を
容易にするため検電層上に所定の高さを有した検電金具
を設け、また、十分な静電容量を得られるようにするた
め、ケーブル接続部の導体を絶縁する絶縁体の外周に設
けられ、前記絶縁体の外周に設けられたシールド層と隔
離され、前記絶縁体中へ所定の曲率を有した曲面形状に
よって突出した突出部を有する半導電性領域と、 前記半導電性領域の外周に着脱可能に設けられ、開口を
有した検電金具を頂部に有し、前記開口に通じる所定の
深さの垂直孔を有し、前記垂直孔内に突出するとともに
事故検出装置へ電気的に接続されたばねスイッチ片を有
し、一端が下部に露出することにより前記半導電性領域
と接触して前記検電金具と前記半導電性領域を電気的に
接続するリード導体を有した検電本体と、 前記検電本体と嵌合して前記検電金具を被い、嵌合状態
において前記検電金具に電気的に接続されるとともに前
記開口から前記垂直孔内へ伸びて前記ばねスイッチ片と
電気的に接続される挿入金具を有した検電口キャップを
備え、 前記検電本体に前記検電口キャップが嵌合されないとき
検電棒を前記検電金具に接触させることにより検電を行
い、 前記検電本体に前記検電口キャップが嵌合されたとき前
記半導電性領域の電圧信号が前記事故検出装置へ供給さ
れるように構成されたことを特徴とするケーブルヘッド
検電構造を提供するものである。The present invention has been made in view of the above, and in order to facilitate the voltage detection operation, a voltage detection metal fitting having a predetermined height is provided on the voltage detection layer, and a sufficient capacitance can be obtained. In order to ensure that the conductor of the cable connecting portion is provided with an outer periphery of an insulator, is isolated from the shield layer provided on the outer periphery of the insulator, and protrudes into the insulator by a curved shape having a predetermined curvature. And a semi-conductive region having a protruding portion, which is detachably provided on the outer periphery of the semi-conductive region, has an electroscopic metal fitting having an opening at the top, and has a vertical hole of a predetermined depth communicating with the opening. And a spring switch piece that protrudes into the vertical hole and is electrically connected to the accident detection device. Has a lead conductor that electrically connects the semi-conductive area And the electric power detection main body which is fitted to the electric power detection main body, covers the electric power detection metal fitting, is electrically connected to the electric power detection metal fitting in a fitted state, and extends from the opening into the vertical hole. A detection port cap having an insertion fitting electrically connected to the spring switch piece is provided, and when the detection port cap is not fitted to the detection main body, a detection rod is contacted with the detection probe to detect it. And a voltage signal of the semi-conductive area is supplied to the accident detection device when the detection port cap is fitted to the detection body. It provides an electrical structure.
以下、本考案のケーブルヘッド検電構造を詳細に説明す
る。Hereinafter, the cable head detecting structure of the present invention will be described in detail.
第１図から第５図は本発明の一実施例を示す。第１図は
検電操作を行うために後述する検電口キャップを検電本
体30から取り外した状態を示しており、絶縁体９へ突出
した突起1aを形成した半導電性領域１と、すり鉢状の検
電口を有する検電部３へ半導電性領域１の電圧を与える
錫メッキ軟銅線２（半田付け４によって接続）と、後述
する検電口キャップを嵌合した場合、スイッチの役目を
する板バネ５と、スイッチがオンの場合、事故検出測定
器等に接続する埋込金具６を有する。絶縁体９の上に
は、シールド層８が形成され、絶縁体９の下には、ケー
ブル導体に接続された導体10が位置している。尚、20は
ポリアセタール樹脂の絶縁体部である。1 to 5 show an embodiment of the present invention. FIG. 1 shows a state in which a later-described electric discharge port cap is removed from the electric detection main body 30 in order to perform the electric detection operation. The semiconductive region 1 having the protrusion 1a protruding toward the insulator 9 and the mortar. When a tin-plated annealed copper wire 2 (which is connected by soldering 4) for applying the voltage of the semi-conductive area 1 to the detection unit 3 having a strip-shaped detection port and a detection port cap described later are fitted, the role of the switch It has a leaf spring 5 that operates and an embedded metal fitting 6 that is connected to an accident detection measuring instrument when the switch is on. A shield layer 8 is formed on the insulator 9, and a conductor 10 connected to the cable conductor is located below the insulator 9. In addition, 20 is an insulator part of polyacetal resin.
以上の構成においてすり鉢形にした検電口を有する検電
部３に検電棒を接触させると、半導電性領域１の電圧に
基づいて検電することができる。この場合、検電部３が
所定の高さになっており、また、形状がすり鉢形になっ
ているので検電操作が容易である。In the above-mentioned configuration, when the detecting rod is brought into contact with the detecting unit 3 having the mortar-shaped detecting port, the voltage can be detected based on the voltage of the semiconductive region 1. In this case, since the power detection unit 3 has a predetermined height and the shape is a mortar shape, the power detection operation is easy.
第２図は検電部３に検電口キャップ11を嵌合した状態を
示し、検電口キャップ11を弾性的に嵌合させるコイルス
プリング12と、板バネ５と接続する挿入金具13を有す
る。FIG. 2 shows a state in which the detection port cap 11 is fitted to the detection unit 3, and has a coil spring 12 for elastically fitting the detection port cap 11 and an insertion fitting 13 for connecting with the leaf spring 5. .
以上の構成において、検電口キャップ11を嵌合すると半
導電性領域１の電圧は錫メッキ軟銅線２、検電部３、コ
イルスプリング12、挿入金具13、板バネ５、埋込金具６
を介して測定装置に与えられるため、地絡事故等を検出
することができる。In the above-mentioned configuration, when the detection port cap 11 is fitted, the voltage of the semi-conductive region 1 is the tin-plated annealed copper wire 2, the detection unit 3, the coil spring 12, the insertion fitting 13, the leaf spring 5, and the embedding fitting 6.
Since it is given to the measuring device via the, the ground fault and the like can be detected.
第３図は検電層として機能するEPR等の半導電性領域１
の断面を示し、絶縁体９に向かって突出する円形の半導
電性突起部1aを有し、コンデンサとしての電極の表面積
を増加させて静電容量を大きくしている。このとき、突
出部1aは円形であるので電界集中を招く恐れはない。突
出部1aは複数にすると更に良い。また、この突起部1aに
よりコンデンサの電極間距離が小さくなる効果をも有す
る。Fig. 3 shows a semi-conductive area 1 such as EPR that functions as a detection layer.
And has a circular semi-conductive protrusion 1a protruding toward the insulator 9, and increases the surface area of the electrode as a capacitor to increase the capacitance. At this time, since the protrusion 1a has a circular shape, there is no possibility of causing electric field concentration. It is more preferable to provide a plurality of protrusions 1a. In addition, the projections 1a also have the effect of reducing the distance between the electrodes of the capacitor.
第４図は検電金具を示し、検電棒を接触し検電操作を行
う検電部３と、検電部３と錫メッキ軟銅線２を接続して
いる半田付け４と、検電口キャップ11を嵌合した場合挿
入金具13によりスイッチの役目をする板バネ５を有す
る。板バネ５は本体21のスリット21aに先端が位置し、
基部がねじ22で止められている。FIG. 4 shows an electric power detection metal fitting, in which an electric power detection unit 3 for contacting an electric detection rod to perform an electric power detection operation, a soldering 4 connecting the electric power detection unit 3 and a tin-plated annealed copper wire 2, and an electric power detection port cap. When 11 is fitted, the insert 13 has a leaf spring 5 which functions as a switch. The tip of the leaf spring 5 is located in the slit 21a of the main body 21,
The base is fastened with screws 22.
第５図は取付バンドによってケーブルヘッドに検電装置
を取り付けた状態を示すものであり、ケーブルヘッドの
半導電性領域１の外周に取りつけられる取付バンド14
と、金具16を引き上げる爪15と、金具16を押さえつける
スプリング17を有する。FIG. 5 shows a state in which the voltage detecting device is attached to the cable head by the attachment band.
And a claw 15 for pulling up the metal fitting 16 and a spring 17 for pressing the metal fitting 16.
以上の構成において、半導電性領域１の所定の位置に検
電装置（検電口キャップ11）を合わせ、スプリングの一
端を掛けて金具16を引き下げるとスプリング17の弾性力
でバンド14が締まって検電装置が固定される。取り外す
場合は、金具16の爪15を引き上げると、スプリング17が
取付金具18から外れて取付けバンド14を緩めることがで
きる。In the above-mentioned structure, by fitting the voltage detecting device (voltage detecting port cap 11) to a predetermined position of the semi-conductive region 1, hooking one end of the spring and pulling down the metal fitting 16, the elastic force of the spring 17 tightens the band 14. The voltage detector is fixed. When detaching, when the claw 15 of the metal fitting 16 is pulled up, the spring 17 is disengaged from the mounting metal fitting 18 and the mounting band 14 can be loosened.
以上説明した通り、本考案のケーブルヘッド検電構造に
よれば、検電層に絶縁体へ突出した点状突起を形成した
ため、十分な静電容量を得ることができ、又、検電層上
に所定の高さを有した検電金具を設けたため、検電操作
を容易にすることができる。As described above, according to the cable head voltage detection structure of the present invention, since the dot-shaped projections protruding from the insulator are formed on the voltage detection layer, sufficient capacitance can be obtained, and on the voltage detection layer. Since the electric detection metal fitting having a predetermined height is provided in, the electric detection operation can be facilitated.
第１図および第２図は本考案の一実施例を示す断面図。
第３図は本考案の検電層を示す断面図。第４図および第
５図は本考案の一実施例における検電金具を示す説明
図。 符号の説明 １……半導電性領域、1a……突起 ２……錫メッキ軟銅線 ３……検電部、４……半田付け ５……板バネ、６……埋込金具 ８……シールド層、９……絶縁体 10……導体、11……検電口キャップ 12……スプリング 13……挿入金具 14……取付けバンド 15……爪、16……金具 17……スプリング 18……取付金具 20……ポリアセタール樹脂 21……本体 21a……スリット 22……ねじ、30……検電本体1 and 2 are sectional views showing an embodiment of the present invention.
FIG. 3 is a sectional view showing the detection layer of the present invention. FIG. 4 and FIG. 5 are explanatory views showing a power detection fitting in one embodiment of the present invention. Explanation of symbols 1 ... Semi-conductive area, 1a ... Protrusion 2 ... Tin-plated annealed copper wire 3 ... Voltage detection part, 4 ... Soldering 5 ... Leaf spring, 6 ... Embedded metal fitting 8 ... Shield Layer, 9 ... Insulator 10 ... Conductor, 11 ... Detector cap 12 ... Spring 13 ... Insert metal fitting 14 ... Mounting band 15 ... Claw, 16 ... Metal fitting 17 ... Spring 18 ... Mounting Metal fittings 20 …… Polyacetal resin 21 …… Main body 21a …… Slits 22 …… Screws, 30 …… Electrolytic detection main body
Claims (1)
外周に設けられ、前記絶縁体の外周に設けられたシール
ド層と隔離され、前記絶縁体中へ所定の曲率を有した曲
面形状によって突出した突出部を有する半導電性領域
と、 前記半導電性領域の外周に着脱可能に設けられ、開口を
有した検電金具を頂部に有し、前記開口に通じる所定の
深さの垂直孔を有し、前記垂直孔内に突出するとともに
事故検出装置へ電気的に接続されたばねスイッチ片を有
し、一端が下部に露出することにより前記半導電性領域
と接触して前記検電金具と前記半導電性領域を電気的に
接続するリード導体を有した検電本体と、 前記検電本体と嵌合して前記検電金具を被い、嵌合状態
において前記検電金具に電気的に接続されるとともに前
記開口から前記垂直孔内へ伸びて前記ばねスイッチ片と
電気的に接続される挿入金具を有した検電口キャップを
備え、 前記検電本体に前記検電口キャップが嵌合されないとき
検電棒を前記検電金具に接触させることにより検電を行
い、 前記検電本体に前記検電口キャップが嵌合されたとき前
記半導電性領域の電圧信号が前記事故検出装置へ供給さ
れるように構成されたことを特徴とするケーブルヘッド
検電構造。1. A curved surface shape provided on the outer periphery of an insulator for insulating a conductor of a cable connecting portion, isolated from a shield layer provided on the outer periphery of the insulator, and having a predetermined curvature into the insulator. A semi-conductive region having a projecting protrusion and a vertical hole of a predetermined depth communicating with the opening, which is detachably provided on the outer periphery of the semi-conductive region and has an electrophoretic metal fitting having an opening at the top. And a spring switch piece that protrudes into the vertical hole and is electrically connected to the accident detection device, and has one end exposed to a lower portion to come into contact with the semi-conductive region and the electric detection metal fitting. A detection body having a lead conductor for electrically connecting the semi-conductive region, and covering the detection metal fitting by fitting with the detection main body, and electrically connected to the detection metal fitting in a fitted state. Connected and from the opening into the vertical hole And a detection port cap having an insertion fitting electrically connected to the spring switch piece, and a detection rod is brought into contact with the detection fitting when the detection port cap is not fitted to the detection body. It is configured such that a voltage signal of the semiconductive region is supplied to the accident detection device when the power detection main body is fitted with the power detection port cap. Cable head voltage detection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987003229U JPH0645264Y2 (en) | 1987-01-13 | 1987-01-13 | Cable head voltage detection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987003229U JPH0645264Y2 (en) | 1987-01-13 | 1987-01-13 | Cable head voltage detection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63111675U JPS63111675U (en) | 1988-07-18 |
| JPH0645264Y2 true JPH0645264Y2 (en) | 1994-11-16 |
Family
ID=30782798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987003229U Expired - Lifetime JPH0645264Y2 (en) | 1987-01-13 | 1987-01-13 | Cable head voltage detection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645264Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5263936B2 (en) * | 2008-03-25 | 2013-08-14 | 株式会社ダイヘン | Current transformer built-in electrical equipment and short-circuit plug for current transformer protection |
| JP5263941B2 (en) * | 2008-06-26 | 2013-08-14 | 株式会社ダイヘン | Current transformer built-in electrical equipment and short-circuit plug for current transformer protection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61191008A (en) * | 1985-02-20 | 1986-08-25 | San Eisha Seisakusho:Kk | Detection terminal cover type electrostatic transformer |
-
1987
- 1987-01-13 JP JP1987003229U patent/JPH0645264Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63111675U (en) | 1988-07-18 |
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