JPH0668511B2 - Insulator for voltage detection - Google Patents
Insulator for voltage detectionInfo
- Publication number
- JPH0668511B2 JPH0668511B2 JP61194946A JP19494686A JPH0668511B2 JP H0668511 B2 JPH0668511 B2 JP H0668511B2 JP 61194946 A JP61194946 A JP 61194946A JP 19494686 A JP19494686 A JP 19494686A JP H0668511 B2 JPH0668511 B2 JP H0668511B2
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- electrode
- voltage
- electric wire
- electric
- 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
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Insulators (AREA)
Description
【発明の詳細な説明】 発明の目的 （産業上の利用分野） この発明は電線路において電圧を測定するために用いる
電圧検出用碍子に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a voltage detecting insulator used for measuring a voltage in an electric line.
（従来の技術） 従来、電線路では、電力供給のための情報の一つとし
て、第４図（ａ），（ｂ）に示すように、電線５に近接
させて電界センサ４１を配置し、この電界センサ４１に
よって電界（鎖線で示す）を検出し、計測器を用いて電
圧値を測定している。(Prior Art) Conventionally, in an electric line, an electric field sensor 41 is arranged close to the electric wire 5 as shown in FIGS. 4 (a) and 4 (b), as one of information for power supply. The electric field sensor 41 detects an electric field (indicated by a chain line) and measures the voltage value using a measuring instrument.
（発明が解決しようとする問題点） ところが、架空の三相電線路などでは線路機材の配置も
錯綜し、降雨などによっても電界が変動し易いので測定
精度が低下するとともに、電界センサ４１も、その検出
能力の制約上、限られた範囲の電圧しか検出できない欠
点があり、事故電圧などを含めた広範囲の電圧への適用
には不便であり、これをカバーするために、電圧レベル
に応じて各種センサの準備が必要になるなどの問題点が
あった。(Problems to be Solved by the Invention) However, in a fictitious three-phase electric line or the like, the arrangement of line equipment is complicated, and the electric field is likely to change due to rainfall and the like, so that the measurement accuracy is lowered and the electric field sensor 41 is also Due to the limitation of its detection capability, it has a drawback that it can detect only a limited voltage range, and it is inconvenient to apply it to a wide range of voltages including accident voltage. There were problems such as the need to prepare various sensors.
発明の構成 （問題点を解決するための手段） この発明は前記問題点を解決するため、相互間の浮遊静
電容量によって一対の電極に電線から電圧を分圧し、電
気光学素子を備えた光センサをこの両電極に接続して、
碍子本体内に設けた光ファイバ等によりなる透光体を介
し、光信号を出力するようにした電圧検出碍子におい
て、 前記両電極と光センサとは、収納凹部を有し碍子本体の
頭部に該頭部から突出した状態で固着されたキャップ金
具の前記収納凹部内に、絶縁物により包蔵して保持さ
れ、さらに前記電線は、前記収納凹部に封塞するための
押え蓋と前記キャップ金具間で把持する手段を採用して
いる。Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention divides a voltage from an electric wire between a pair of electrodes by stray capacitance between them to provide an optical device including an electro-optical element. Connect the sensor to both electrodes,
In a voltage detection insulator that outputs an optical signal through a light-transmitting body made of an optical fiber or the like provided in the insulator body, the both electrodes and the optical sensor have a storage recess on the head of the insulator body. Between the cap and the metal cap, the cap metal fixed in a state of protruding from the head is enclosed and held by an insulating material in the storage recess, and the electric wire is sealed in the storage recess and the cap metal. The means for gripping is adopted.
（作用） この発明は前記の手段を採用したことにより、表面の汚
損による碍子本体の静電容量の変化に影響されることな
く、又電線は両電極の間近に位置して位置の変動がない
ので検出機能が安定かつ高められ、さらに、キャップ金
具の押え蓋によって電線が位置決めして把持されるので
取付作業が簡単である。(Operation) By adopting the above means, the present invention is not affected by the change in the electrostatic capacitance of the insulator body due to the surface contamination, and the electric wire is located close to both electrodes, and the position does not change. Therefore, the detection function is stable and enhanced, and the electric wire is positioned and gripped by the pressing lid of the cap fitting, so that the mounting work is easy.
（実施例） 以下、この発明を具体化した実施例を第１図、第２図、
および第３図（ａ），（ｂ）に基づいて説明する。(Embodiment) Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
And description will be given based on FIGS. 3 (a) and 3 (b).
磁器製の碍子本体１の下端部にはベース金具２が嵌合固
着され、上端部にはキャップ金具３が嵌合固着されてい
る。キャップ金具３の上部には凹部３ａが設けられ、該
凹部３ａには、上面に電線受け溝４ａを設けた検電部４
が収容されている。検電部４には、前記電線受け溝４ａ
に支持される電線５と平行に所定の絶縁間隔を設けて対
向する円弧状の第１電極６が配設され、さらに、該第１
電極６に対向して同じく円弧状の第２電極７が、第１電
極６との間に所定の絶縁間隔を設けてその外側に平行に
配設されている。第１電極６と第２電極７にはそれぞれ
一端にリード線８，９が接続されている。A base metal fitting 2 is fitted and fixed to the lower end of a porcelain insulator body 1, and a cap metal fitting 3 is fitted and fixed to the upper end. A recess 3a is provided in the upper portion of the cap fitting 3, and the recess 3a has an electric wire receiving groove 4a on its upper surface.
Is housed. The electric wire receiving groove 4a is provided in the electric detection unit 4.
An arcuate first electrode 6 is disposed in parallel with the electric wire 5 supported by the first electrode 6 with a predetermined insulation gap therebetween, and further, the first electrode 6 is provided.
A second arc-shaped second electrode 7 that faces the electrode 6 is also arranged in parallel to the outer side of the first electrode 6 with a predetermined insulation gap provided therebetween. Lead wires 8 and 9 are connected to one ends of the first electrode 6 and the second electrode 7, respectively.
検電部４は前記第１電極６、第２電極７およびリード線
８，９を第３図（ａ），（ｂ）に示すように、ゴム、樹
脂などの絶縁物１０中に埋込んで一体成形した上、前記
キャップ金具３の凹部３ａに収容される。１０ａは後述
する電圧センサ１４を収容する切欠部であって、前記電
線受け溝４ａとともにモールド時に同時に形成されてい
る。The voltage detection unit 4 embeds the first electrode 6, the second electrode 7 and the lead wires 8 and 9 in an insulator 10 such as rubber or resin as shown in FIGS. 3 (a) and 3 (b). It is integrally molded and then housed in the recess 3 a of the cap fitting 3. Reference numeral 10a is a cutout portion for accommodating a voltage sensor 14, which will be described later, and is formed simultaneously with the wire receiving groove 4a at the time of molding.
一方、碍子本体１に挿通した光ファイバや透孔性アルミ
ナ棒などの透光体２１の上端には、電気光学素子１６を
備えた電圧センサ１４の基端部が接合固着されて、前記
第１電極６、第２電極７などの下方に位置して配設され
るとともに、第１電極６、第２電極７はそれぞれ前記リ
ード線８，９をもって接続した電圧センサ１４を介して
相互に接続されている。On the other hand, the base end portion of the voltage sensor 14 having the electro-optical element 16 is bonded and fixed to the upper end of the light transmitting body 21 such as the optical fiber or the porous alumina rod which is inserted into the insulator body 1, and the first portion is formed. The first electrode 6 and the second electrode 7 are arranged below the electrodes 6, the second electrode 7, etc., and the first electrode 6 and the second electrode 7 are connected to each other via the voltage sensor 14 connected by the lead wires 8 and 9, respectively. ing.
電圧センサ１４は、第１図に示すように絶縁ケース１５
内にポッケルス素子などの電気光学素子１６を配設し、
その上面に1/4波長板１７および反射鏡１８を、また、
下面にはロッドレンズ１９および偏光板２０をそれぞれ
一体に接合固着したものであって、偏光板２０に透光体
２１を接合固着するとともに、絶縁物２５をもって絶縁
ケース１５に包蔵されている。２３，２４はそれぞれ固
定材である。The voltage sensor 14 has an insulating case 15 as shown in FIG.
An electro-optical element 16 such as a Pockels element is provided inside,
A 1/4 wave plate 17 and a reflecting mirror 18 are provided on the upper surface thereof,
A rod lens 19 and a polarizing plate 20 are integrally bonded and fixed to the lower surface, and a translucent body 21 is bonded and fixed to the polarizing plate 20, and an insulating material 25 is included in an insulating case 15. 23 and 24 are fixing materials.
なお、前記電気光学素子１６の両側面にはそれぞれ電極
２２ａ，２２ｂが設けられ、該電極２２ａ，２２ｂには
前記リード線８，９がそれぞれ接続されるが、電極２２
ａ，２２ｂは絶縁ケース１５の外部へリード線で引出す
か、絶縁ケース１５の側面に補助電極等を設けてもよ
い。また、電圧センサ１４は絶縁ケース１５と絶縁物２
５などを用いず直接に検電部４とともに絶縁包蔵しても
よい。Electrodes 22a and 22b are provided on both side surfaces of the electro-optical element 16, and the lead wires 8 and 9 are connected to the electrodes 22a and 22b, respectively.
A and 22b may be led out to the outside of the insulating case 15 by a lead wire, or an auxiliary electrode or the like may be provided on the side surface of the insulating case 15. In addition, the voltage sensor 14 includes an insulating case 15 and an insulator 2.
It is also possible to directly carry out the insulation encapsulation together with the electric detection section 4 without using the 5 or the like.
第１電極６、第２電極７及びリード線８，９を埋設して
一体形成してなる前記検電部４は、導出したリード線
８，９を電圧センサ１４に接続した後、キャップ金具３
の凹部３ａに収容するとともに、キャップ金具３の内壁
および電圧センサ１４との空隙に絶縁物を充填して、キ
ャップ金具３内に固着する。The electric detection part 4 in which the first electrode 6, the second electrode 7 and the lead wires 8 and 9 are embedded and integrally formed is connected to the voltage sensor 14 by the lead wires 8 and 9 and then the cap fitting 3 is formed.
It is housed in the concave portion 3a of the above, and the gap between the inner wall of the cap metal fitting 3 and the voltage sensor 14 is filled with an insulating material and fixed in the cap metal fitting 3.
１１は絶縁材料をもって形成した押え蓋であって、前記
検電部４の電線受け溝４ａに電線５を嵌入した上、ゴム
などの絶縁性クッション材１２を介してキャップ金具３
に締付固定して電線５を把持する。Reference numeral 11 is a holding lid formed of an insulating material, in which the electric wire 5 is fitted in the electric wire receiving groove 4a of the electric detection section 4, and the cap metal fitting 3 is provided via an insulating cushion material 12 such as rubber.
Then, the electric wire 5 is gripped by fixing it to.
碍子本体１の下端部のベース金具２には、透光体２１に
接合固着した光コネクタ２６が装着されており、電圧検
出用碍子は電線路の設置個所において光ファイバケーブ
ル２７による光伝送路によって測定器３２の光分光器２
８を介して、例えば発光ダイオードよりなる光源２９お
よびホドダイオードよりなる受光器３０より演算制御装
置３１などに接続できるよう構成されている。An optical connector 26 bonded and fixed to the translucent body 21 is attached to the base metal fitting 2 at the lower end portion of the insulator body 1, and the voltage detecting insulator is provided by an optical transmission line by an optical fiber cable 27 at a place where the electric line is installed. Optical spectroscope 2 of measuring instrument 32
8 is configured so that it can be connected to the arithmetic and control unit 31 and the like from a light source 29 made of a light emitting diode and a light receiver 30 made of a photodiode, for example.
次に、前記のように構成した電圧検出用碍子の作用を説
明する。Next, the operation of the voltage detecting insulator configured as described above will be described.
電線路において電線５を把持する電圧検出用碍子の検電
部４は、電線５の電界内にあり、電線５に対向して配置
した第１電極６には相互間の静電容量に応じた二次電圧
が誘起され、また、該第１電極６に対向して配置した第
２電極７にも同じく相互間の静電容量に応じて第１電極
６の誘起電圧に応じた二次電圧が誘起されて該第１電極
６と第２電極７とに電位差が生じ、第１電極６に接続し
たリード線８によって電圧センサ１４の一方の電極２２
ａと、第２電極７に接続したリード線９によって同じく
電圧センサ１４の他方の電極２２ｂとに両電極間の電位
差が発生して電気光学素子１６に電圧が印加される。The voltage detecting insulator 4 for grasping the electric wire 5 in the electric line is in the electric field of the electric wire 5, and the first electrode 6 arranged to face the electric wire 5 depends on the mutual capacitance. A secondary voltage is induced, and a secondary voltage corresponding to the induced voltage of the first electrode 6 is also applied to the second electrode 7 arranged opposite to the first electrode 6 according to the mutual capacitance. When induced, a potential difference is generated between the first electrode 6 and the second electrode 7, and one electrode 22 of the voltage sensor 14 is connected by the lead wire 8 connected to the first electrode 6.
A and the lead wire 9 connected to the second electrode 7 generate a potential difference between the two electrodes 22b of the voltage sensor 14 and the voltage is applied to the electro-optical element 16.
一方、本発明の電圧検出用碍子に前記した光源２９か
ら、光ファイバケーブル２７を介して光パワを伝送する
と、この光パワは光コネクタ２６および碍子本体１に挿
通した透光孔２１を通じて電圧センサ１４に入り、反射
鏡１８によって受光器３０へ伝送されるが、光パワは電
圧センサ１４を通過する間に電気光学素子１６のポッケ
ルス効果により、電圧センサ１４に印加された電圧、す
なわち、電線路の二次電圧に見合った位相変調を受け、
偏光板２０及び1/4波長板１７により強度変調されて光
の強弱信号により、反射鏡１８から反転してこの被変調
光が透光体２１および光コネクタ２６を介して電圧検出
碍子から発信され、光ファイバケーブル２７より測定器
３２の受光器３０に導かれ、その後電気信号に変換され
て電線路の電圧値が測定される。On the other hand, when optical power is transmitted from the above-mentioned light source 29 to the voltage detecting insulator of the present invention through the optical fiber cable 27, this optical power is transmitted through the optical connector 26 and the light transmitting hole 21 inserted through the insulator body 1 to the voltage sensor. 14 and is transmitted to the light receiver 30 by the reflecting mirror 18, but the optical power is a voltage applied to the voltage sensor 14 due to the Pockels effect of the electro-optical element 16 while passing through the voltage sensor 14, that is, an electric line. Received the phase modulation corresponding to the secondary voltage of
The intensity of the light is modulated by the polarizing plate 20 and the quarter-wave plate 17, and the modulated light is inverted from the reflecting mirror 18 by the intensity signal of the light, and the modulated light is transmitted from the voltage detecting insulator via the light transmitting body 21 and the optical connector 26. , Is guided from the optical fiber cable 27 to the light receiver 30 of the measuring device 32, and then converted into an electric signal to measure the voltage value of the electric line.
本発明では、上記のごとく検電部４が電線の把持部を兼
ねて碍子に一体に設けられており、また、電界を検出す
る第１電極６と第２電極７とを電線５の至近位置に配設
し、かつ、相互間に所定の絶縁間隔を設けて静電誘導に
よる誘起電圧を規則的に発生させ、両電極間の電位差に
よって電圧センサ１４に電圧を印加するので、碍子本体
１の表面の汚損による静電容量の変化や、電線路におけ
る複雑な機材構成や降雨などによる電界変動の影響を受
けることなく高精度の測定ができる。In the present invention, as described above, the electric detection part 4 is integrally provided on the insulator also as the grip part of the electric wire, and the first electrode 6 and the second electrode 7 for detecting the electric field are located in the vicinity of the electric wire 5. Are arranged in the insulator main body 1, and a predetermined insulation interval is provided between them to regularly generate an induced voltage due to electrostatic induction, and the voltage is applied to the voltage sensor 14 by the potential difference between the two electrodes. Highly accurate measurements can be performed without being affected by changes in capacitance due to surface contamination, or by changes in the electric field due to complicated equipment configurations in the electric line or rainfall.
さらに、実施例に述べたように、第１電極６、第２電極
７あるいは電圧センサ１４などをもってなる検電部４
を、絶縁物で包蔵して配設したこと、また検電部４はキ
ャップ金具３内に収容することにより、電線５はキャッ
プ金具３と押さ蓋１１とにより両電極６，７の間近に把
持されて位置の変動がないことによって、外部の影響を
排除して出力信号が安定し、したがって高精度の検出機
能を保持できる。Further, as described in the embodiment, the power detection unit 4 including the first electrode 6, the second electrode 7, the voltage sensor 14, and the like.
By enclosing them with an insulating material and by accommodating the detection unit 4 in the cap metal fitting 3, the electric wire 5 is gripped by the cap metal fitting 3 and the pressing lid 11 in the vicinity of both electrodes 6, 7. Since there is no change in the position, the external influence can be eliminated and the output signal can be stabilized, so that the highly accurate detection function can be maintained.
さらに、本発明では、前記の通り、電線５、第１電極６
および第２電極７を相互間に所定の間隔を設けて配する
構成であるため、間隔を適宜に調整することによって両
電極間に任意の電位差を規制的に誘起させることがで
き、従って、電圧センサ１４は特定の適用電圧に制約さ
れることなく、同一種をもって汎用することができる。Further, in the present invention, as described above, the electric wire 5, the first electrode 6
Since the second electrode 7 and the second electrode 7 are arranged with a predetermined gap provided therebetween, an appropriate potential difference can be regulatedly induced between the two electrodes by appropriately adjusting the gap, and therefore the voltage The sensor 14 is not limited to a specific applied voltage, and can be general-purposed with the same type.
また、電極の形状も、特に実施例のように円弧状に限る
ことはなく、例えば、平板電極を平行に配設してもよ
く、さらに、一方の電極を可動型に構成することによっ
て、設置場所においても任意に調節ができる。Further, the shape of the electrode is not particularly limited to an arc shape as in the embodiment, and for example, flat plate electrodes may be arranged in parallel, and further, one electrode is configured to be movable so that the electrode can be installed. It can be adjusted arbitrarily in the place.
さらに、本発明の電圧検出用碍子は、既設の電線路への
付設のみならず、電線路の電線支持碍子として当所より
適所に設置しておけば、測定器を接続することによっ
て、随時、簡便に電圧測定を行うことができる。Further, the voltage detecting insulator of the present invention is not only attached to an existing electric line, but also installed in a proper place from this place as a wire support insulator for the electric line, and by connecting a measuring instrument, at any time, simple and convenient. The voltage measurement can be performed.
すなわち、本発明では、碍子本体の頭部に電線把持部を
兼ねて一体的に検電部を設けることによって、構造が簡
単になり、また、光ファイバの無誘導性を有効に利用で
きる構成を提供する。That is, in the present invention, the structure is simplified by providing the electric detection unit integrally with the head of the insulator body also as the electric wire gripping unit, and the non-inductive property of the optical fiber is effectively utilized. provide.
発明の効果 以上詳述したように、本発明の電圧検出用碍子は碍子本
体の頭部に電線把持部を兼ねて一体的に検電部を設けた
ので構造が簡単で取扱いが容易、かつ、安全であり、設
置スペースも小さく、さらに、外部影響を受けることな
く安定した信号を検出して高精度の電圧測定が行い得る
という優れた効果を有する。Effects of the Invention As described in detail above, the voltage detecting insulator of the present invention has a simple structure and easy handling because the head of the insulator body is integrally provided with the electric detecting portion also serving as the wire gripping portion, and, It is safe, has a small installation space, and has an excellent effect that a stable signal can be detected and highly accurate voltage measurement can be performed without being affected by external influences.
第１図は本発明の実施例を示す要部の断面図、第２図は
電圧検出用碍子全体を示す中央部半縦断面図、第３図
（ａ）は検電部の電極配置を示す平面図、第３図（ｂ）
は同じく検電部の電極配置を示す正面図、第４図
（ａ），（ｂ）は従来の電圧検出装置を示す外観図であ
る。 １……碍子本体、４……検電部、５……電線、６……第
１電極、７……第２電極、１４……電圧センサ、１６…
…電気光学素子、２１……透光体。FIG. 1 is a cross-sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a half-longitudinal cross-sectional view of a central part showing the entire voltage detecting insulator, and FIG. 3 (a) shows an electrode arrangement of a voltage detecting part. Plan view, FIG. 3 (b)
Similarly, FIG. 4 is a front view showing the electrode arrangement of the voltage detecting section, and FIGS. 4 (a) and 4 (b) are external views showing a conventional voltage detecting device. 1 ... Insulator main body, 4 ... Electric detection part, 5 ... Electric wire, 6 ... First electrode, 7 ... Second electrode, 14 ... Voltage sensor, 16 ...
… Electro-optical element, 21 …… Transparent body.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 前田 敏雄 愛知県名古屋市名東区扇町２丁目１番地 (72)発明者 加藤 和明 愛知県知多市八幡字田渕１番地の606 (72)発明者 沖本 明道 愛知県名古屋市瑞穂区竹田町２丁目15番地 (72)発明者 柘植 憲治 愛知県名古屋市緑区鳴海町字矢切127番地 の５ (72)発明者 高岡 直敏 愛知県犬山市上小針１番地 (56)参考文献 特開 昭62−116265（ＪＰ，Ａ) 特開 昭62−132178（ＪＰ，Ａ) 特開 昭54−47689（ＪＰ，Ａ) 特開 昭55−57153（ＪＰ，Ａ) 特公 昭49−1231（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Maeda 2-1, Ogimachi, Meito-ku, Nagoya, Aichi (72) Inventor Kazuaki Kato 606, (1) Tabuchi, Hachiman, Chita, Aichi (72) Inventor, Okimoto 2-15-15 Taketa-cho, Mizuho-ku, Nagoya-shi, Aichi Prefecture (72) Inventor Kenji Tsuge 5 of 72 Yagiri, Narumi-cho, Midori-ku, Nagoya-shi, Aichi (72) Inventor Naotoshi Takaoka 1 Kamikonee, Inuyama-shi, Aichi Prefecture (56) References JP 62-116265 (JP, A) JP 62-132178 (JP, A) JP 54-47689 (JP, A) JP 55-57153 (JP, A) Ko 492-131 (JP, B2)
Claims (1)
（６，７）に電線（５）から電圧を分圧し、電気光学素
子（１６）を備えた光センサ（１４）をこの両電極
（６，７）に接続して、碍子本体（１）内に設けた光フ
ァイバ等によりなる透光体（２１）を介し、光信号を出
力するようにした電圧検出碍子において、 前記両電極（６，７）と光センサ（１４）とは、収納凹
部（３ａ）を有し、かつ、碍子本体（１）の頭部に該頭
部から突出した状態で固着されたキャップ金具（３）の
前記収納凹部（３ａ）内に、絶縁物（１０）により包蔵
して保持され、さらに前記電線（５）は、前記収納凹部
（３ａ）を封塞するための押え蓋（１１）と前記キャッ
プ金具（３）間で把持するようにしたことを特徴とする
電圧検出用碍子。1. An optical sensor (14) equipped with an electro-optical element (16), which divides a voltage from an electric wire (5) to a pair of electrodes (6, 7) by a mutual floating capacitance, and which has both electrodes. In the voltage detecting insulator, which is connected to (6, 7) and outputs an optical signal through a light transmitting body (21) formed of an optical fiber or the like provided in the insulator body (1), both electrodes ( 6, 7) and the optical sensor (14) have a storage recess (3a), and a cap fitting (3) fixed to the head of the insulator body (1) in a state of protruding from the head. The electric wire (5) is enclosed and held by an insulator (10) in the storage recess (3a), and the electric wire (5) is further provided with a cap (11) for closing the storage recess (3a) and the cap fitting. (3) An insulator for voltage detection, characterized in that it is held between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61194946A JPH0668511B2 (en) | 1986-08-20 | 1986-08-20 | Insulator for voltage detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61194946A JPH0668511B2 (en) | 1986-08-20 | 1986-08-20 | Insulator for voltage detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6350762A JPS6350762A (en) | 1988-03-03 |
| JPH0668511B2 true JPH0668511B2 (en) | 1994-08-31 |
Family
ID=16332958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61194946A Expired - Lifetime JPH0668511B2 (en) | 1986-08-20 | 1986-08-20 | Insulator for voltage detection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0668511B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384996A (en) * | 2011-10-13 | 2012-03-21 | 南京苏特电气股份有限公司 | Power transformer with high-voltage side power collecting signals |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2735418B2 (en) * | 1991-10-01 | 1998-04-02 | 中部電力株式会社 | AC voltage detector |
| JPH08233881A (en) * | 1995-02-27 | 1996-09-13 | Tokin Corp | System for detecting surge waveform |
| FI116102B (en) * | 2004-03-19 | 2005-09-15 | Ensto Sekko Oy | Measuring devices for use in power distribution networks or transmission networks |
| JP4734092B2 (en) * | 2005-11-08 | 2011-07-27 | 東日本旅客鉄道株式会社 | Medium section pressure measurement device and program |
| JP6108521B2 (en) * | 2012-11-29 | 2017-04-05 | 大崎電気工業株式会社 | Potentiometer and potential difference measuring method for potentiometric measurement |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS491231A (en) * | 1972-03-09 | 1974-01-08 | ||
| DE2739599A1 (en) * | 1977-08-31 | 1979-03-08 | Siemens Ag | Optically coupled current meter for HV power line - has current transformer which controls transmissivity of optical channel containing voltage dependent crystal |
| DE2845625A1 (en) * | 1978-10-19 | 1980-04-30 | Siemens Ag | ARRANGEMENT FOR ELECTROOPTIC VOLTAGE MEASUREMENT |
| JPS62116265A (en) * | 1985-11-15 | 1987-05-27 | Sumitomo Electric Ind Ltd | Voltage detector |
| JPS62132178A (en) * | 1985-12-03 | 1987-06-15 | Sumitomo Electric Ind Ltd | Voltage/current detector |
-
1986
- 1986-08-20 JP JP61194946A patent/JPH0668511B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384996A (en) * | 2011-10-13 | 2012-03-21 | 南京苏特电气股份有限公司 | Power transformer with high-voltage side power collecting signals |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6350762A (en) | 1988-03-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5119024A (en) | Optical device for sensing magnetic inductions | |
| JPH0668511B2 (en) | Insulator for voltage detection | |
| EP0990184A1 (en) | Integrated optical waveguide system | |
| US5083221A (en) | Optical unit having means for electrically shielding electrooptical | |
| CA2125395A1 (en) | Optical voltage and electric field sensor based on the pockels effect | |
| PL349190A1 (en) | Device for determining the pressure between a contact wire and a pantograph | |
| JPH0439606Y2 (en) | ||
| JPH0634695Y2 (en) | Voltage detector for distribution line | |
| FR3115883B1 (en) | Device for detecting the capacitive coupling between an object and a detection surface | |
| JPH0664952B2 (en) | Insulator for current detection | |
| JPH0562954B2 (en) | ||
| JPH0450685B2 (en) | ||
| JPH0336195Y2 (en) | ||
| JPS61234322A (en) | Detector section of optical temperature sensor | |
| RU2120128C1 (en) | Device for measuring of superstrong currents | |
| JPH09127168A (en) | Non-contact type surface electrometer and surface potential measuring method | |
| JPH0476068B2 (en) | ||
| JPH052865Y2 (en) | ||
| JP2969035B2 (en) | Optical PT | |
| JPS58109858A (en) | Voltage measuring device | |
| JPH0628705Y2 (en) | Connection structure between insulating cylinder and optical fiber cable in current detector | |
| JPH09292414A (en) | Photoelectric field sensor | |
| JPH0269688A (en) | Magnetic field sensor | |
| JPH0815331A (en) | Optical sensor | |
| SU1064215A1 (en) | Device for determination of direct current magnitude |