JPH0510798B2 - - Google Patents
Info
- Publication number
- JPH0510798B2 JPH0510798B2 JP58244029A JP24402983A JPH0510798B2 JP H0510798 B2 JPH0510798 B2 JP H0510798B2 JP 58244029 A JP58244029 A JP 58244029A JP 24402983 A JP24402983 A JP 24402983A JP H0510798 B2 JPH0510798 B2 JP H0510798B2
- Authority
- JP
- Japan
- Prior art keywords
- zinc oxide
- oxide element
- auxiliary electrode
- power distribution
- high voltage
- 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
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- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は避雷器に係り、特に、直列ギヤツプと
酸化亜鉛素子とで構成する配電用避雷器に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a lightning arrester, and more particularly to a lightning arrester for power distribution comprising a series gap and a zinc oxide element.
従来の配電用避雷器は第１図のようであり、一
個の直列ギヤツプ１と二枚の酸化亜鉛素子２，３
が碍管４の中に収納されている。直列ギヤツプ１
側に高圧端子５、酸化亜鉛素子３側に補助電極６
を介して接地端子７が、さらに、碍管４の接地側
に取付金具８がそれぞれ設けられる。
A conventional power distribution surge arrester is shown in Figure 1, and consists of one series gap 1 and two zinc oxide elements 2 and 3.
is housed in the insulator tube 4. Series gap 1
High voltage terminal 5 on the side, auxiliary electrode 6 on the zinc oxide element 3 side
A ground terminal 7 is provided through the insulator tube 4, and a mounting fitting 8 is provided on the ground side of the insulator tube 4.
従来の配電用避雷器は、酸化亜鉛素子が二枚使
用されており、重く、雷サージ等の過電圧で動作
時に接地電位の取付金具８と酸化亜鉛素子３に電
位が生じ、酸化亜鉛素子３と碍管４の微小ギヤツ
プ９で部分放電が生じる欠点があつた。後者の部
分により、酸化亜鉛素子３の表面が劣化し、絶縁
性能が低下する可能性がある。 Conventional power distribution lightning arresters use two zinc oxide elements, are heavy, and when operated due to overvoltage such as a lightning surge, a potential is generated between the mounting bracket 8 at ground potential and the zinc oxide element 3, and the zinc oxide element 3 and the insulating tube There was a drawback that partial discharge occurred in the small gap 9 of No. 4. The latter portion may cause the surface of the zinc oxide element 3 to deteriorate and the insulation performance to deteriorate.
本発明の目的は、動作時に酸化亜鉛素子の表面
から部分放電が発生しないようにすることが可能
な配電用避雷器を提供することにある。
An object of the present invention is to provide a lightning arrester for power distribution that can prevent partial discharge from occurring from the surface of a zinc oxide element during operation.
本発明は、上記目的を達成するために、直列ギ
ヤツプと酸化亜鉛素子とを碍管内に直列に設ける
とともに、前記直列ギヤツプ側に高圧端子を、前
記酸化亜鉛素子側に補助電極を介して接地端子
を、前記碍管の接地端子側に取付金具をそれぞれ
設けた配電用避雷器において、前記酸化亜鉛素子
の前記接地端子側端の位置が、前記取付金具の前
記高圧端子側端よりも前記高圧端子側に近くなる
ように、前記補助電極を前記碍管内に設けたこと
を特徴とするものである。
In order to achieve the above object, the present invention provides a series gap and a zinc oxide element in series in an insulator tube, a high voltage terminal on the series gap side, and a ground terminal on the zinc oxide element side via an auxiliary electrode. In the distribution surge arrester in which a mounting bracket is provided on the grounding terminal side of the insulator tube, the end of the zinc oxide element on the grounding terminal side is located closer to the high voltage terminal than the end of the mounting bracket on the high voltage terminal side. The auxiliary electrode is provided within the porcelain tube so that the auxiliary electrode is located close to the auxiliary electrode.
本発明の実施例を第２図を用いて説明する。第
２図が第１図と異なるところは、高耐圧の酸化亜
鉛素子１１を１枚のみ使つており、補助電極１２
の長さが長くなつたところである。
An embodiment of the present invention will be described using FIG. 2. The difference between FIG. 2 and FIG. 1 is that only one high-voltage zinc oxide element 11 is used, and the auxiliary electrode 12 is
This is where the length of .
高耐圧化酸化亜鉛素子の配合はSiO210〜15モ
ル％、Sb2O3約2.0モル、Al（NO3）3・9H2Ｏ約
0.01モル％、LiCO3約１モル％とすることによ
り、100μAp／cm2における素子の電位傾度を
3.6kVp／cm以上に出来ることが実験により確認
された。これにより制限電圧が従来の素子の約２
倍以上になる。 The composition of the high-voltage zinc oxide element is 10 to 15 mol% of SiO 2 , about 2.0 mol of Sb 2 O 3 , and about 9 H 2 O of Al(NO 3 ) 3.9
By setting 0.01 mol% and LiCO 3 to about 1 mol%, the potential gradient of the device at 100 μAp/cm 2 is
It has been confirmed through experiments that it is possible to achieve a voltage of 3.6kVp/cm or higher. This reduces the limiting voltage to approximately 2 that of conventional elements.
It will more than double.
そのため、第２図のように、従来二枚使つてい
た酸化亜鉛素子の枚数を一枚、即ち、半分にする
ことが出来た。枚数が減つたことなより、配電用
避雷器の重さは当然軽くなる。又、第２図から明
らかなように、雷サージ等の過電圧で動作した場
合にでも、接地された取付金具８と本発明の酸化
亜鉛素子１１が十分離れ、取付金具８と補助電極
１２が対向しているため（酸化亜鉛素子の接地端
子側端の位置が、取付金具の高圧端子側端よりも
高圧端子側に近くなるように、補助電極が碍管内
に設けられている。）、酸化亜鉛素子１１の表面か
ら部分放電が生じることは無い。 As a result, as shown in FIG. 2, the number of zinc oxide elements, which used to be two, can be reduced to one, or halved. Since the number of lightning arresters is reduced, the weight of the distribution lightning arrester is naturally reduced. Furthermore, as is clear from FIG. 2, even in the case of operation due to overvoltage such as lightning surge, the grounded mounting bracket 8 and the zinc oxide element 11 of the present invention are sufficiently separated, and the mounting bracket 8 and the auxiliary electrode 12 face each other. (The auxiliary electrode is provided in the insulator pipe so that the ground terminal end of the zinc oxide element is closer to the high voltage terminal side than the high voltage terminal end of the mounting bracket.) No partial discharge occurs from the surface of the element 11.
本発明の一実施例によれば、従来の配電用避雷
器と比較し、使用する酸化亜鉛素子の枚数を半減
できるので避雷器を軽くでき、動作時に酸化亜鉛
素子表面から部分放電が発生しないようにできる
効果がある。第２図では、更に、補助電極をパイ
プ状にしているので避雷器全体の残留インダクタ
ンスを従来のものより小さくできる、酸化亜鉛素
子枚数が半減し、素子分の等価キヤパシタンスが
大きくなり、急峻波応答が良くなる。また、部品
点数が減つたことにより信頼性向上の効果もあ
る。 According to an embodiment of the present invention, the number of zinc oxide elements used can be halved compared to conventional power distribution lightning arresters, making the lightning arrester lighter and preventing partial discharge from occurring from the surface of the zinc oxide elements during operation. effective. In Figure 2, the auxiliary electrode is shaped like a pipe, so the residual inductance of the entire surge arrester can be made smaller than that of conventional ones.The number of zinc oxide elements is halved, the equivalent capacitance of each element is increased, and the steep wave response is improved. Get better. Additionally, the reduced number of parts has the effect of improving reliability.
第２図において、補助電極１２の酸化亜鉛素子
１１側の一部、あるいは、全部を中実導体とする
ことができる。この場合、この配電用避雷器の熱
容量が増加したことになり、その分だけ大きなエ
ネルギを吸収できる。 In FIG. 2, a part or all of the auxiliary electrode 12 on the zinc oxide element 11 side can be made of a solid conductor. In this case, the heat capacity of this power distribution lightning arrester has increased, and it can absorb a correspondingly large amount of energy.
本発明によれば、動作時に酸化亜鉛素子の表面
から部分放電が発生しないようにできる。
According to the present invention, it is possible to prevent partial discharge from occurring from the surface of the zinc oxide element during operation.
第１図は従来の配電用避雷器の断面図、第２図
は本発明の配電用避雷器の断面図である。
２，３……酸化亜鉛素子、１１……高電位傾度
酸化亜鉛素子。
FIG. 1 is a sectional view of a conventional power distribution lightning arrester, and FIG. 2 is a sectional view of a power distribution lightning arrester according to the present invention. 2, 3...Zinc oxide element, 11...High potential gradient zinc oxide element.
Claims (1)
列に設けるとともに、前記直列ギヤツプ側に高圧
端子を、前記酸化亜鉛素子側に補助電極を介して
接地端子を、前記碍管の接地端子側に取付金具を
それぞれ設けた配電用避雷器において、 前記酸化亜鉛素子の前記接地端子側端の位置
が、前記取付金具の前記高圧端子側端よりも前記
高圧端子側に近くなるように、前記補助電極を前
記碍管内に設けたことを特徴とする配電用避雷
器。 ２ 特許請求の範囲第１項において、前記補助電
極の前記酸化亜鉛素子側の少なくとも一部を中実
導体としたことを特徴とする配電用避雷器。 ３ 特許請求の範囲第１項又は第２項において、
前記前記酸化亜鉛素子として100μAp／cm2におけ
る電位傾度が3.6kVp／cm以上のものを用いるこ
とを特徴とする配電用避雷器。[Scope of Claims] 1. A series gap and a zinc oxide element are provided in series in an insulator tube, and a high voltage terminal is connected to the series gap side, a ground terminal is connected to the zinc oxide element side via an auxiliary electrode, and a ground terminal is connected to the insulator tube. In a distribution surge arrester in which mounting fittings are provided on the grounding terminal side, the end of the zinc oxide element on the grounding terminal side is located closer to the high voltage terminal side than the end of the mounting fittings on the high voltage terminal side. A lightning arrester for power distribution, characterized in that the auxiliary electrode is provided within the insulator tube. 2. The lightning arrester for power distribution according to claim 1, wherein at least a portion of the auxiliary electrode on the zinc oxide element side is a solid conductor. 3 In claim 1 or 2,
A lightning arrester for power distribution, characterized in that the zinc oxide element has a potential gradient of 3.6 kVp/cm or more at 100 μAp/cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58244029A JPS60136190A (en) | 1983-12-26 | 1983-12-26 | Arrester for power distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58244029A JPS60136190A (en) | 1983-12-26 | 1983-12-26 | Arrester for power distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60136190A JPS60136190A (en) | 1985-07-19 |
| JPH0510798B2 true JPH0510798B2 (en) | 1993-02-10 |
Family
ID=17112647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58244029A Granted JPS60136190A (en) | 1983-12-26 | 1983-12-26 | Arrester for power distribution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60136190A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01170982U (en) * | 1988-05-20 | 1989-12-04 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5156000U (en) * | 1974-10-28 | 1976-04-30 | ||
| US4016527A (en) * | 1975-09-25 | 1977-04-05 | North American Philips Corporation | Hermetically sealed film resistor |
| JPS5838304B2 (en) * | 1975-09-29 | 1983-08-22 | 株式会社トクヤマ | Polyolefin resin engineering process |
| JPS5381835U (en) * | 1976-12-09 | 1978-07-07 | ||
| JPS5645123U (en) * | 1979-09-17 | 1981-04-23 | ||
| JPS5792395U (en) * | 1980-11-27 | 1982-06-07 |
-
1983
- 1983-12-26 JP JP58244029A patent/JPS60136190A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60136190A (en) | 1985-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |