JPS5850401B2 - Lightning arrester - Google Patents
Lightning arresterInfo
- Publication number
- JPS5850401B2 JPS5850401B2 JP51146545A JP14654576A JPS5850401B2 JP S5850401 B2 JPS5850401 B2 JP S5850401B2 JP 51146545 A JP51146545 A JP 51146545A JP 14654576 A JP14654576 A JP 14654576A JP S5850401 B2 JPS5850401 B2 JP S5850401B2
- Authority
- JP
- Japan
- Prior art keywords
- linear resistor
- parallel
- lightning arrester
- resistor
- gap device
- 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
Links
Landscapes
- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】
この発明は、非直線抵抗体の一部と並列に放電ギャップ
を設けた避雷器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lightning arrester in which a discharge gap is provided in parallel with a portion of a non-linear resistor.
最近、従来のＳｉＣと比べ非常に非直線性の良いＺｎＯ
系の抵抗体が開発され、これを用いて直列ギャップの無
い避雷器（以後ギャップレス避雷器と称する）が実現で
きるようになっている。Recently, ZnO, which has very good nonlinearity compared to conventional SiC, has been developed.
A series resistor has been developed that can be used to realize a surge arrester without a series gap (hereinafter referred to as a gapless surge arrester).
このＺｎＯ系の新しい非直線抵抗体は普通従来のＳｉＣ
と同じように円板状に成形され、これを積み重ねて避雷
器を構成することが一般的である。This new ZnO-based non-linear resistor is usually a conventional SiC
It is generally formed into a disk shape and stacked to form a lightning arrester.
このＺｎＯ系の非直線抵抗体の電流−電圧特性の一例を
第１図に示す。An example of the current-voltage characteristics of this ZnO-based nonlinear resistor is shown in FIG.
第１図の電圧軸は電流が１「ｍＡ」の時値を１として目
盛っである。The voltage axis in FIG. 1 is graduated with a value of 1 when the current is 1 mA.
ギャップレス避雷器を構成するためには、避雷器の定格
電圧を常時印加した時に流れる電流で、非直線抵抗体が
破壊しないように非直線抵抗体を積み上げなければなら
ない。In order to construct a gapless lightning arrester, nonlinear resistors must be stacked so that the nonlinear resistors are not destroyed by the current that flows when the rated voltage of the arrester is constantly applied.
この電流値は例ば１ ｒ ｍＡ ｊ前後である。This current value is, for example, around 1 r mA j.
このようにして非直線抵抗体の積み上げを決めると、雷
サージ放電々流、開閉サージ放電々流に対する制限電圧
は第１図に示すような電流−電圧特性から一義的に決ま
ってしまう。When the stacking of nonlinear resistors is determined in this way, the limiting voltage for the lightning surge discharge current and the switching surge discharge current is uniquely determined from the current-voltage characteristics as shown in FIG.
従ってこの制限電圧を低くするために、第２図の電気回
路図に示す如く非直線抵抗体１の一部１ａと並列に放電
ギャップ２を接続して、サージ電流により避雷器の端子
電圧が設定値以上に上昇した時にこの放電ギャップを放
電させ、非直線抵抗素子の一部を短絡することが考えら
れている。Therefore, in order to lower this limiting voltage, a discharge gap 2 is connected in parallel with a portion 1a of the non-linear resistor 1 as shown in the electrical circuit diagram of FIG. It is considered that when the voltage rises above this level, the discharge gap is caused to discharge and a part of the non-linear resistance element is short-circuited.
第３図はその具体的実施例である。FIG. 3 shows a specific example thereof.
第３図は、避雷器の１ユニツトであって、定格電圧に応
じてこのユニットを積み重ねて避雷器を構成する。FIG. 3 shows one unit of a lightning arrester, and the lightning arrester is constructed by stacking these units according to the rated voltage.
図に於て１は非直線抵抗素子を重み重ねて形成した非直
線抵抗体、２は放電ギャップ装置、３は金属接続板、４
は接続リード板、５は絶縁板である。In the figure, 1 is a nonlinear resistor formed by stacking nonlinear resistance elements, 2 is a discharge gap device, 3 is a metal connection plate, and 4
5 is a connection lead plate, and 5 is an insulating plate.
さて、この並列接続された放電ギャップ装置２が付いた
直列ギャップレス避雷器にサージ電流が流れて、並列部
の非直線抵抗体１ａの電圧により放電ギャップ装置２が
放電すると、並列部の非直線抵抗体１ａは短絡され、並
列部の非直線抵抗体１ａには電流が流れない。Now, when a surge current flows through the series gapless arrester equipped with the discharge gap device 2 connected in parallel and the discharge gap device 2 discharges due to the voltage of the non-linear resistor 1a in the parallel section, the non-linear resistor 2 in the parallel section 1a is short-circuited, and no current flows through the non-linear resistor 1a in the parallel section.
従って、サージのエネルギーは並列ギャップの放電後は
非並列部１ｂの非直線抵抗体によって消費される。Therefore, the energy of the surge is consumed by the non-linear resistor of the non-parallel portion 1b after the discharge of the parallel gap.
非直線抵抗体の放電耐量は普通その断面積に比例する。The discharge capacity of a non-linear resistor is generally proportional to its cross-sectional area.
従って、上記の理由から、第３図のように放電ギャップ
装置２と並列の非直線抵抗体１ａと、非並列部の非直線
抵抗体１ｂとは同じ断面積にする６要はないことが分か
る。Therefore, for the above reasons, it is clear that it is not necessary to make the non-linear resistor 1a in parallel with the discharge gap device 2 and the non-linear resistor 1b in the non-parallel part the same cross-sectional area as shown in FIG. .
それ故、並列部の非直線抵抗体１ａの断面積を小さくす
ることにより、非直線抵抗体の材料を節約するとともに
避雷器の大きさも小さくすることができる。Therefore, by reducing the cross-sectional area of the non-linear resistor 1a in the parallel portion, the material of the non-linear resistor can be saved and the size of the lightning arrester can also be reduced.
それ故、第４図、第５図に示す様に、非並列部の非直線
抵抗体１ｂより断面積を小とした非直線抵抗体１ａをギ
ャップ装置２と並置した構成の避雷器が考えられている
。Therefore, as shown in FIGS. 4 and 5, a lightning arrester has been considered in which a non-linear resistor 1a having a smaller cross-sectional area than the non-linear resistor 1b in the non-parallel portion is arranged in parallel with a gap device 2. There is.
ところが、続流しや断特性が良好であることを要求され
るギャップ装置２は消弧後の絶縁回復特性が優れている
ことを要求される。However, the gap device 2, which is required to have good following and breaking characteristics, is required to have excellent insulation recovery characteristics after arc extinction.
しかしながら、上記構成にあってはギャップ装置２の周
囲空間の大きさが並置される非直線抵抗体１により制約
をうけるため、要求される特性を満すことが難しいとい
う問題点があった。However, in the above configuration, the size of the space around the gap device 2 is limited by the non-linear resistor 1 arranged in parallel, so there is a problem that it is difficult to satisfy the required characteristics.
本発明は上記点に着目してなされたもので、並列ギヤツ
ブ付の避雷器において、続流しや断特性が良好で、絶縁
回復特性が優れた避雷器を提供することを目的とする。The present invention has been made with attention to the above points, and an object of the present invention is to provide a lightning arrester with parallel gears that has good follow-up and break characteristics and excellent insulation recovery characteristics.
この発明を図面にもとづいて説明する。This invention will be explained based on the drawings.
第６図において１は金属酸化物を主成分とする非直線抵
抗素子を積層して構成した非直線抵抗体、２は放電ギャ
ップ装置、３は金属接続板、４は接続リード板、５は縁
縁板を示す。In Fig. 6, 1 is a non-linear resistor constructed by stacking non-linear resistive elements mainly composed of metal oxides, 2 is a discharge gap device, 3 is a metal connection plate, 4 is a connection lead plate, and 5 is an edge. The edge plate is shown.
第６図は、放電ギャップ装置２と並列の非直線抵抗体１
ａの断面積を、非並列部の非直線抵抗体１ｂの断面積よ
りも小さくして、放電ギャップ装置２と非直線抵抗体１
とを直列に積重ね配置したものである。FIG. 6 shows a non-linear resistor 1 in parallel with a discharge gap device 2.
The cross-sectional area of a is made smaller than the cross-sectional area of the non-linear resistor 1b in the non-parallel portion, and the discharge gap device 2 and the non-linear resistor 1 are
are stacked in series.
第３図のと比較して、放電ギャップ装置２と並列部の非
直線抵抗体１ａの断面が小さいから、材料の節約になる
ことはもちろん、縁縁板５の断面積を非直線抵抗体１ｂ
の断面積より小にでき、これに伴い接続リード板４をよ
り中心軸側に配置できるから、それだけ収納容器を小さ
くすることができる。Compared to the one shown in FIG. 3, the cross section of the non-linear resistor 1a in parallel with the discharge gap device 2 is smaller, which not only saves material but also reduces the cross-sectional area of the edge plate 5 to the non-linear resistor 1b.
Since the cross-sectional area of the connecting lead plate 4 can be arranged closer to the central axis, the storage container can be made smaller accordingly.
又、ギャップ装置２を並列部の非直線抵抗体１ａと並置
させていないため、続流しや断特性の低下することは防
ぐことができるとともに消弧後の絶縁回復特性の向上も
期待することができる。Furthermore, since the gap device 2 is not placed in parallel with the non-linear resistor 1a in the parallel section, it is possible to prevent deterioration of follow current and breaking characteristics, and it is also expected that the insulation recovery characteristics after arc extinguishment will be improved. can.
上記のように構成された放電ギャップ装置付の直列ギャ
ップレス避雷器において、サージ電流が流れて非直線抵
抗体１の電圧が設定値を超えると放電ギャップ装置２が
放電する。In the series gapless lightning arrester with a discharge gap device configured as described above, when a surge current flows and the voltage of the nonlinear resistor 1 exceeds a set value, the discharge gap device 2 discharges.
並列放電ギャップ装置の放電後は、並列部の非直線抵抗
体１ａは短絡されるから、サージエネルギーは非並列部
の非直線抵抗体１ｂで消費される。After the parallel discharge gap device discharges, the non-linear resistor 1a in the parallel portion is short-circuited, so the surge energy is consumed in the non-linear resistor 1b in the non-parallel portion.
従って並列部の非直線抵抗体１ａの放電耐量は非並列部
の非直線抵抗体１ｂよりも小さくてよく、太きさも小さ
くてよい。Therefore, the discharge withstand capacity of the non-linear resistor 1a in the parallel portion may be smaller than that of the non-linear resistor 1b in the non-parallel portion, and the thickness may also be smaller.
さらに、放電ギャップ装置２を並列部の非直線抵抗体１
ａと並置していない構成のため続流しや断特性も良好で
、消弧後の縁縁回復特性も向上させることができる。Furthermore, the discharge gap device 2 is connected to the non-linear resistor 1 in the parallel section.
Since the structure is not arranged in parallel with a, the following flow and breaking characteristics are also good, and the edge recovery characteristics after arc extinction can also be improved.
以上説明したように、本発明は並列ギヤツブ付の避雷器
において、続流しや断特性が良好で、絶縁回復特性が優
れた避雷器を提供することができる。As described above, the present invention can provide a lightning arrester with parallel gears that has good follow-up and break characteristics and excellent insulation recovery characteristics.
第１図はＺｎＯ系の非直線抵抗体の電流−電圧特性を示
す図、第２図は並列ギヤツブ付のギャップレス避雷器の
電気回路図、第３図は従来のこの種装置の構成図、第４
及び第５図は放電ギャップ装置と並列部の非直線抵抗体
を並置した避雷器の構成図、第６図は本発明の一実施例
の避雷器の構成図である。
１・・・・・・非直線抵抗体、２・・・・・・放電ギャ
ップ装置、３・・・・・・金属接続板、４・・・・・・
接続リード板、５・・・・・・絶縁板。Figure 1 is a diagram showing the current-voltage characteristics of a ZnO-based nonlinear resistor, Figure 2 is an electrical circuit diagram of a gapless arrester with a parallel gear knob, Figure 3 is a configuration diagram of a conventional device of this type, and Figure 4 is a diagram showing the current-voltage characteristics of a ZnO-based nonlinear resistor.
5 is a block diagram of a lightning arrester in which a discharge gap device and a non-linear resistor in a parallel section are arranged side by side, and FIG. 6 is a block diagram of a lightning arrester according to an embodiment of the present invention. 1...Non-linear resistor, 2...Discharge gap device, 3...Metal connection plate, 4...
Connection lead plate, 5... Insulation plate.
Claims (1)
ねて第１の非直線抵抗体と第２の非直線抵抗体を構成す
るとともに直列接続し、第２の非直線抵抗体には並列に
ギャップ装置を接続して成る避雷器において、第２の非
直線抵抗体の断面積を第１の非直線抵抗体の断面積より
も小に形成し、第２の非直線抵抗体と前記ギャップ装置
との間には第１の非直線抵抗体の断面積より小の絶縁板
を介挿、して第１の非直線抵抗体・第２の非直線抵抗体
、前記ギャップを積層配置したことを特徴とする避雷器
。1 Non-linear resistance elements mainly composed of metal oxides are stacked to form a first non-linear resistor and a second non-linear resistor, connected in series, and connected in parallel to the second non-linear resistor. In a lightning arrester formed by connecting a gap device, the cross-sectional area of the second non-linear resistor is smaller than the cross-sectional area of the first non-linear resistor, and the second non-linear resistor and the gap device are connected to each other. An insulating plate having a smaller cross-sectional area than the first non-linear resistor is inserted between them, and the first non-linear resistor, the second non-linear resistor, and the gap are arranged in a stacked manner. lightning arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51146545A JPS5850401B2 (en) | 1976-12-08 | 1976-12-08 | Lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51146545A JPS5850401B2 (en) | 1976-12-08 | 1976-12-08 | Lightning arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5371250A JPS5371250A (en) | 1978-06-24 |
| JPS5850401B2 true JPS5850401B2 (en) | 1983-11-10 |
Family
ID=15410065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51146545A Expired JPS5850401B2 (en) | 1976-12-08 | 1976-12-08 | Lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850401B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS638707U (en) * | 1986-07-03 | 1988-01-21 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2572859B2 (en) * | 1989-10-26 | 1997-01-16 | 日本碍子株式会社 | Voltage non-linear resistor and surge arrester |
-
1976
- 1976-12-08 JP JP51146545A patent/JPS5850401B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS638707U (en) * | 1986-07-03 | 1988-01-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5371250A (en) | 1978-06-24 |
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