JPS6280988A - Resistance leakage current measuring device for arrester - Google Patents
Resistance leakage current measuring device for arresterInfo
- Publication number
- JPS6280988A JPS6280988A JP21934585A JP21934585A JPS6280988A JP S6280988 A JPS6280988 A JP S6280988A JP 21934585 A JP21934585 A JP 21934585A JP 21934585 A JP21934585 A JP 21934585A JP S6280988 A JPS6280988 A JP S6280988A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- leakage current
- measuring device
- arrester
- current measuring
- 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.)
- Granted
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Thermistors And Varistors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は避雷器の抵抗分もれ電流測定装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a resistance leakage current measuring device for a lightning arrester.
避雷器に用いられている酸化亜鉛素子の等価回路は第２
図のように表わされる。すなわち酸化亜鉛素子に流れる
もれ電流ｉは、抵抗成分のｉｒと容量成分のｉｃの合成
さ口たものとなる。このうち、酸化亜鉛素子の劣化に関
与するのは抵抗成分ｉｒ である、このもれ電流ｉｒを
測定するため、従来より実開昭５７−１８７６５号に示
されるような装置があった。こｎ８第４図に示す。The equivalent circuit of the zinc oxide element used in lightning arresters is the second one.
It is represented as shown in the figure. That is, the leakage current i flowing through the zinc oxide element is the sum of the resistance component ir and the capacitance component ic. Among these, it is the resistance component ir that is involved in the deterioration of the zinc oxide element.In order to measure this leakage current ir, there has heretofore been a device as shown in Japanese Utility Model Application No. 18765/1983. This is shown in Figure 4.
酸化亜鉛素子（６）の接地側に設けられた端板（７）に
導線（７）が接続されブッシング叫を介して外部に導出
されている。この導線■には、もれ電流ｉｒ＋ｉＣが流
ｎ、低抵抗において電圧降下を生じる。また酸化亜鉛素
子（６）の上部に設けられた頭部シールド（５）に対向
して電極３ηが設けられている。ＩＩυと頭部シールド
（５）の間の静ｍ容旭により、導体−にはもれ電流の容
量成分ｉｃが流れる。この電流ｉｃは抵抗（至）におい
て電圧降下を生じる。したがって抵抗（２）の大きさを
変えることにより、容量成分の電圧降下をキャンセルし
、抵抗（６）と抵抗餞の間に接続されたオシロスコープ
Ｑ４Ｊで抵抗成分ｉｒを観測することができる。A conductive wire (7) is connected to an end plate (7) provided on the ground side of the zinc oxide element (6) and led out to the outside via a bushing. A leakage current ir+iC flows through this conductor (2), causing a voltage drop at low resistance. Further, an electrode 3η is provided opposite the head shield (5) provided on the top of the zinc oxide element (6). Due to the static current between IIυ and the head shield (5), a capacitive component of leakage current flows through the conductor. This current ic causes a voltage drop across the resistor. Therefore, by changing the size of the resistor (2), the voltage drop of the capacitive component can be canceled and the resistive component IR can be observed with an oscilloscope Q4J connected between the resistor (6) and the resistor.
従来の装置では、容＋ａＱＱの大きさによる制限から、
劃０１）をあまり大きくできず、十分な静電容量を得る
ことができなかった。そのため、ノイズの影暢を受は測
定値に誤差を生じるという問題点があった。In conventional equipment, due to the limitation due to the size of capacity + aQQ,
01) could not be made very large, and sufficient capacitance could not be obtained. Therefore, there is a problem in that the influence of noise causes errors in the measured values.
一方、上記の問題点を解決するため、電極３υを大きく
すれは容器α９も必然的に大きくなり、避雷器の大型化
を招くこととなる。On the other hand, in order to solve the above-mentioned problems, if the electrode 3υ is made larger, the container α9 will also inevitably become larger, leading to an increase in the size of the lightning arrester.
この発明は、と記のような問題点を解消するためなされ
たもので、避笛器の大型化を招かず、精度の高い測定装
置を得ることを目的とする。This invention was made to solve the above problems, and aims to provide a highly accurate measuring device without increasing the size of the whistle.
この発明に係る測定装置は、大地と絶縁されて支持され
た避雷器の金属容器に第１の抵抗を接続し、非直線抵抗
体の接地側に第２の抵抗を接続している。そして、第１
の抵抗と第２の抵抗の間に測定手段を設けている。In the measuring device according to the present invention, a first resistor is connected to a metal container of a lightning arrester that is supported and insulated from the earth, and a second resistor is connected to a ground side of a non-linear resistor. And the first
A measuring means is provided between the resistor and the second resistor.
金属容器と頭部シールドとの対向面積は十分に大きいの
で、第１の抵抗に流れるもれ電流の容量成分は十分に大
きなものとなる。Since the opposing area between the metal container and the head shield is sufficiently large, the capacitance component of the leakage current flowing through the first resistor is sufficiently large.
一方、第２の抵抗には、もれ一流の抵抗成分と容量成分
が流れる。したがって、第１の抵抗と第２の抵抗の間に
接続された測定手段によって、抵抗成分のもれ電流のみ
が検出さｎる。On the other hand, leakage of the resistance component and capacitance component flows through the second resistor. Therefore, only the leakage current of the resistance component is detected by the measuring means connected between the first resistor and the second resistor.
鉛素子（６）が収納されている。金属容器ａ勢は絶縁体
（４）によ・つて大地と絶縁され、導線６′！Ｊを介し
て第１の抵抗（２）の一端に接続されている。第１の抵
抗α１の他端はアースされており、第１の抵抗（至）に
は金属容器Ｑｑと頭部シールド（５）の間の静電容量に
よって、容量成分のもれ一流ｉｃ が流１しる。一方、
酸化亜鉛素子（６）の接地側に設けられた端板（７）に
は導線−が接続されブッシング叫を介して外部に導出さ
れている。この導線輪には、抵抗成分ｉｒ と容量成分
ｉｃ の合成さｎたもれ一流が流れ、第２の抵抗（６）
において電圧降下を生じる。抵抗口と抵抗α］の間には
測定手段であるオシロスコープα弔が設けられている。A lead element (6) is housed. The metal container a is insulated from the ground by an insulator (4), and a conductor 6'! It is connected to one end of the first resistor (2) via J. The other end of the first resistor α1 is grounded, and a leakage current ic of the capacitive component flows through the first resistor (to) due to the capacitance between the metal container Qq and the head shield (5). 1 sign. on the other hand,
A conductive wire is connected to an end plate (7) provided on the ground side of the zinc oxide element (6) and led out to the outside via a bushing. A leakage current, which is a combination of the resistance component ir and the capacitance component ic, flows through this conductor ring, and the second resistance (6)
A voltage drop occurs at An oscilloscope, which is a measuring means, is provided between the resistor port and the resistor α.
したが・つて、抵抗（２）の値を変えることにより谷盪
截分ｉ、をキャンセルして、抵抗成分ｉｒのみｆｌ！観
測することができる。However, by changing the value of resistance (2), the valley cutoff i can be canceled and only the resistance component ir can be fl! It can be observed.
また、この災施例では、導線−と大地間および導線のと
大地間にそれぞれ接地スイッチ（ｌｌａ）（ｌｌｂ）が
設けらｎている。平常はこれらをオンにしておくことに
より接地ｍ位に保持することができる。Further, in this embodiment, grounding switches (lla) and (llb) are provided between the conductor and the ground, and between the conductor and the ground, respectively. Normally, by keeping these on, it is possible to maintain the ground at the m position.
以上のようにこの発明によれは、避雷すの金属容器を静
電結合用のに＋Ｓとして用いているので次のような効果
８！得ることができる。。As described above, according to this invention, the metal container of the lightning arrester is used as +S for electrostatic coupling, so the following effect 8! Obtainable. .
第１に、従来のものに比べ十分大きな静電容量を得るこ
とができるので、ノイズ等の影響を受けることな（正確
な測定を行うことができる。First, since it is possible to obtain a sufficiently large capacitance compared to conventional ones, it is possible to perform accurate measurements without being affected by noise or the like.
第２１で、別個に電極を設ける必要がないので、電極設
置用のブッシング等が不要となるばかりでな（、容器を
小型かつ軽量にすることができる。Twenty-first, since there is no need to separately provide an electrode, not only is there no need for a bushing for installing the electrode, but the container can be made smaller and lighter.
第８に、既設の避雷器に対して容器等の大幅な改造を１
−ることなく、もれ電流測定装置を設けることができる
。Eighth, major modifications to the containers, etc. of existing lightning arresters are required.
- A leakage current measuring device can be provided without any problems.
第１図はこの発明の一実施例を示す図、第２図は酸化亜
鉛素子の等価回路を示す図、第８図はもれ電流を示す図
、第４図は従来のもれ電流測定装置を示す図である。
（至）は第１の抵抗、四は第２の抵抗、Ｑ４はオシロス
コープである。
なお、各図中同一符号は同−又は相当部分を示す。
代理人 弁理士 大 岩 増 雄
第１図
第２図
第３図Fig. 1 shows an embodiment of the present invention, Fig. 2 shows an equivalent circuit of a zinc oxide element, Fig. 8 shows a leakage current, and Fig. 4 shows a conventional leakage current measuring device. FIG. (to) is the first resistor, 4 is the second resistor, and Q4 is the oscilloscope. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent: Masuo Oiwa, Patent Attorney Figure 1 Figure 2 Figure 3
Claims (2)
容器に接続され、他端が接地された第１の抵抗、 一端が避雷器の非直線抵抗体の接地側に接続され、他端
が接地された第２の抵抗、 第１の抵抗の前記一端と第２の抵抗の前記一端との間に
接続された測定手段、 を設けたことを特徴とする避雷器の抵抗分もれ電流測定
装置。(1) A first resistor with one end connected to the metal container of the lightning arrester supported and insulated from the earth, and the other end grounded; one end connected to the ground side of the nonlinear resistor of the lightning arrester, and the other end A resistance leakage current measuring device for a lightning arrester, comprising: a grounded second resistor; and a measuring means connected between the one end of the first resistor and the one end of the second resistor. .
とを特徴とする特許請求の範囲第１項記載の避雷器の抵
抗分もれ電流測定装置。(2) The device for measuring resistance leakage current of a lightning arrester according to claim 1, further comprising a switch provided between the first resistor and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21934585A JPS6280988A (en) | 1985-10-02 | 1985-10-02 | Resistance leakage current measuring device for arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21934585A JPS6280988A (en) | 1985-10-02 | 1985-10-02 | Resistance leakage current measuring device for arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6280988A true JPS6280988A (en) | 1987-04-14 |
| JPH0470751B2 JPH0470751B2 (en) | 1992-11-11 |
Family
ID=16733995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21934585A Granted JPS6280988A (en) | 1985-10-02 | 1985-10-02 | Resistance leakage current measuring device for arrester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6280988A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001118707A (en) * | 1999-09-07 | 2001-04-27 | Abb Hochspannungstechnik Ag | Lightning arrester |
| CN104297617A (en) * | 2014-10-12 | 2015-01-21 | 胡智宏 | Measuring transducer for leakage current of lightning arrester |
-
1985
- 1985-10-02 JP JP21934585A patent/JPS6280988A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001118707A (en) * | 1999-09-07 | 2001-04-27 | Abb Hochspannungstechnik Ag | Lightning arrester |
| CN104297617A (en) * | 2014-10-12 | 2015-01-21 | 胡智宏 | Measuring transducer for leakage current of lightning arrester |
| CN104297617B (en) * | 2014-10-12 | 2017-07-07 | 胡智宏 | Lightning arrester leakance measurement sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0470751B2 (en) | 1992-11-11 |
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