JPH08273906A - Arrester for power distribution - Google Patents
Arrester for power distributionInfo
- Publication number
- JPH08273906A JPH08273906A JP7027595A JP7027595A JPH08273906A JP H08273906 A JPH08273906 A JP H08273906A JP 7027595 A JP7027595 A JP 7027595A JP 7027595 A JP7027595 A JP 7027595A JP H08273906 A JPH08273906 A JP H08273906A
- Authority
- JP
- Japan
- Prior art keywords
- lightning arrester
- grounding
- arrester
- mounting band
- mounting
- 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.)
- Pending
Links
Landscapes
- Thermistors And Varistors (AREA)
- Insulators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は避雷器に関し、特に、ア
ース分離装が取り付けられる配電用避雷器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightning arrester, and more particularly to a lightning arrester for power distribution to which a grounding device is attached.
【０００２】[0002]
【従来の技術】ＺｎＯ素子を使用した避雷器において
は、素子の焼損等による事故時には、電源側（系統）と
アースとが短絡され大電流が流れるので、これを防止す
るために、避雷器故障時にアースを分離するアース分離
装置が設けられている。2. Description of the Related Art In a lightning arrester using a ZnO element, in the event of an accident due to element burnout or the like, a large current flows due to a short-circuit between the power supply side (system) and the ground. A ground separating device is provided for separating the.
【０００３】図３はこの従来のアース分離装置付の配電
用避雷器の正面図を示している。同図において１は避雷
器の碍管で、内部にＺｎＯ素子が定格電圧に応じて所定
枚数積み重ねて収容されている。２は避雷器の線路端
子、３は避雷器のアース部を示す。FIG. 3 shows a front view of this conventional lightning arrester for power distribution with a ground separating device. In the figure, reference numeral 1 denotes an insulator tube of a lightning arrester, in which a predetermined number of ZnO elements are stacked and accommodated according to the rated voltage. 2 is a line terminal of the lightning arrester, and 3 is a grounding portion of the lightning arrester.
【０００４】４は取付バンドで、碍管１の外周を２枚の
板材で挾持し、一端側はボルト、ナット４ａで互いに締
め付けられ、他端側４ｂが図示を省略した避雷器取付部
材に取り付けられる。そして、この取付バンド４は一般
に接地されている。Reference numeral 4 denotes a mounting band, which holds the outer periphery of the porcelain insulator 1 with two plates, one end of which is fastened to each other by a bolt and a nut 4a, and the other end 4b of which is attached to a lightning arrester mounting member (not shown). The mounting band 4 is generally grounded.
【０００５】５はアース分離装置で、一端側が避雷器の
アース部３のアース端子３ａに接続され、他端側は接地
されたアース線６に接続されている。アース分離装置５
内にはガス発生剤が収容され、アース分離装置内を大電
流が流れたときに動作し、図のようにアース線６をアー
ス端子３ａから分離する。Reference numeral 5 denotes a ground separating device, one end of which is connected to the ground terminal 3a of the grounding portion 3 of the lightning arrester and the other end of which is connected to a grounded ground wire 6. Ground separation device 5
A gas generating agent is housed inside and operates when a large current flows in the earth separating device, and separates the earth wire 6 from the earth terminal 3a as shown in the figure.
【０００６】避雷器が焼損等による内部事故が発生し、
避雷器の内部およびアース分離装置５を通して大電流が
流れてアース分離装置５が動作し、避雷器がアース線と
分離されると、避雷器のアース部３は線路電圧に充電さ
れる。このとき、アース部３と取付バンド４とが閃絡す
る恐れがあるので、閃絡しないような所定の距離Ｌを設
ける必要がある。An internal accident occurs due to burning of the lightning arrester,
When a large current flows through the inside of the lightning arrester and the ground separating device 5 to operate the ground separating device 5 and the lightning arrester is separated from the ground wire, the grounding portion 3 of the lightning arrester is charged to the line voltage. At this time, the ground portion 3 and the mounting band 4 may flash, so it is necessary to provide a predetermined distance L that does not flash.
【０００７】取付バンド４の取り付け位置は、線路端子
２に接続される系統の電圧との関係で決定されているの
で、アース分離装置５の動作時の耐電圧は、取付バンド
４とアース部３との間の碍管の長さにより決定される。
この碍管の長さ、即ち、耐電圧に必要な距離Ｌは、規格
等では規定されてはいないが、一般に注水状態で系統の
常規対地電圧に耐え得る様に設計されている。従って、
配電用の避雷器の碍管は長く形成されていた。Since the mounting position of the mounting band 4 is determined in relation to the voltage of the system connected to the line terminal 2, the withstand voltage of the ground separating device 5 during operation is determined by the mounting band 4 and the ground portion 3. Determined by the length of the porcelain insulator between and.
The length of this porcelain tube, that is, the distance L required for the withstand voltage is not specified in the standard or the like, but is generally designed so that it can withstand the regular ground voltage of the system in a water-filled state. Therefore,
Insulator tubes for lightning arresters for distribution were long.
【０００８】[0008]
【発明が解決しようとする課題】上記のように、避雷器
のアース部と取付バンドの距離Ｌが短いと、系統電圧で
閃絡するので、閃絡しないように距離をある程度長くと
る必要があるため、碍管の全長が長くなり、コストアッ
プとなっていた。As described above, if the distance L between the grounding portion of the lightning arrester and the mounting band is short, the system voltage causes a flashover. Therefore, it is necessary to increase the distance to some extent so that the flashover does not occur. However, the total length of the porcelain insulator became longer, resulting in higher costs.
【０００９】そこで、本発明は、この碍管の全長を短く
することを目的とするものである。Therefore, the present invention aims to shorten the total length of the porcelain insulator.
【００１０】[0010]
【課題を解決するための手段】本発明において、上記の
課題を解決するための手段は、ＺｎＯ素子を収容した避
雷器の碍管と、該碍管を避雷器取付部材に取り付ける取
付バンドと、アース分離装置に接続されるアース端子を
有するアース部とを備えた避雷器において、前記取付バ
ンドとアース部との間のアース部寄りの碍管外周に、該
碍管の外径より大きい径を有するポリマー笠を取り付け
て取付バンドとアース部間の碍管の長さを短縮し配電用
避雷器のコスト低減を図ったものである。Means for Solving the Problems In the present invention, means for solving the above-mentioned problems include an insulator tube of a lightning arrester accommodating a ZnO element, an attaching band for attaching the insulator tube to an arrester attaching member, and an earth separating device. In a lightning arrester having a grounding portion having a grounding terminal to be connected, a polymer shade having a diameter larger than the outer diameter of the porcelain bushing is attached to the outer circumference of the porcelain bushing near the grounding portion between the mounting band and the grounding portion. The length of the porcelain insulator between the band and the ground portion was shortened to reduce the cost of the lightning arrester for distribution.
【００１１】また、他の実施例として、ポリマー笠に代
えて、碍管自体に笠部を設けて同じ目的を実現するもの
である。As another embodiment, instead of the polymer shade, a shade portion is provided on the porcelain insulator itself to achieve the same purpose.
【００１２】[0012]
【作用】本発明は上記のように構成されているので、ア
ース分離装置が動作し、避雷器のアース部が充電状態と
なっても、ポリマー笠で取付バンド間が遮られ絶縁距離
を非常に長くしているので、取付バンドとアース部間の
距離を相当短くしても閃絡を生ずることがない。従っ
て、この間の碍管を短縮でき、碍管全体が短く（低く）
なり、配電用避雷器のコストの低減が図れる。Since the present invention is configured as described above, even if the earth separating device operates and the earthing portion of the lightning arrester is in the charged state, the polymer shade blocks the mounting bands, resulting in a very long insulation distance. Therefore, even if the distance between the mounting band and the ground portion is considerably shortened, no flashover occurs. Therefore, the porcelain insulator during this period can be shortened, and the overall porcelain insulator is short (low).
As a result, the cost of the lightning arrester for distribution can be reduced.
【００１３】[0013]
【実施例】以下、本発明を図面に示す実施例に基づいて
詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.
【００１４】本発明は取付バンドとアース部との間に鍔
状の絶縁物を設けることに特徴を有し、他は従来とほと
んど同じなので、図３と同一機能を有する部分には、こ
れと同じ符号を付して説明を省略し、特徴部分について
のみ説明する。The present invention is characterized in that a brim-shaped insulator is provided between the mounting band and the ground portion. Since the other parts are almost the same as the conventional ones, a portion having the same function as in FIG. The same reference numerals are given, the description is omitted, and only the characteristic part will be described.
【００１５】図１は本発明の第１の実施例の要部正面図
で、７はポリマー笠で、該ポリマー笠７は取付バンド４
とアース部３との間のアース部寄りに設けられ、笠の外
径は避雷器の碍管１の外径より大きく形成され、アース
部３と取付バンド７との間を遮っている。このポリマー
笠１０はポリマー（例えばレイケム社のクリページイク
ステンダー）により形成され、笠部の有効長を長くして
碍管１に取り付ける。そして、碍管１の取付バンド４と
ポリマー笠７との長さＬ’を短く形成する。FIG. 1 is a front view of an essential part of a first embodiment of the present invention, in which 7 is a polymer shade, and the polymer shade 7 is a mounting band 4.
The outer diameter of the shade is larger than the outer diameter of the insulator 1 of the lightning arrester, and is provided near the ground portion between the ground portion 3 and the ground portion 3, and blocks between the ground portion 3 and the mounting band 7. The polymer shade 10 is formed of a polymer (for example, Crypage extender manufactured by Raychem Co., Ltd.), and is attached to the porcelain tube 1 with the effective length of the shade portion lengthened. Then, the length L ′ between the mounting band 4 of the porcelain bushing 1 and the polymer shade 7 is formed to be short.
【００１６】図２は本発明の第２の実施例の要部正面図
で、第１の実施例のポリマー笠７に代えて、避雷器の碍
管１自体に笠部８を設けたものである。即ち、碍管１の
アース部寄りに、該碍管の外径より大きい外径の笠部８
を碍管に形成し、取付バンド４とアース部３との間の長
さＬ”を短く形成する。FIG. 2 is a front view of the essential portions of the second embodiment of the present invention, in which the polymer insulator 7 of the first embodiment is replaced with a shade 8 on the insulator tube 1 itself of the lightning arrester. That is, the cap portion 8 having an outer diameter larger than the outer diameter of the porcelain bushing is provided near the ground portion of the porcelain bushing 1.
Is formed into a porcelain tube, and the length L ″ between the mounting band 4 and the ground portion 3 is formed to be short.
【００１７】[0017]
【発明の効果】以上のように本発明は取付バンドとアー
ス部間に避雷器の碍管の外径より大きい外径をもったポ
リマー笠、又は碍管自体に笠部を設けたので、取付バン
ドとアース部間の耐電圧は強化され、アース分離装置が
動作してアース部が系統電圧となっても、耐電圧は十分
保たれるので取り付けバンドとアース部間の碍管が短く
でき従って碍管全体の長さが短く（低く）できるため、
配電用避雷器のコストの低減が図れる等の効果を奏す
る。As described above, according to the present invention, since the polymer cap having the outer diameter larger than the outer diameter of the insulator tube of the arrester or the cap portion on the insulator tube itself is provided between the attaching band and the earth portion, the attaching band and the earth portion are provided. The withstand voltage between the parts is strengthened, and even if the earth separation device operates and the earth part becomes the system voltage, the withstand voltage is sufficiently maintained, so the porcelain tube between the mounting band and the ground part can be shortened, and therefore the total length of the porcelain tube is long. Can be shorter (lower),
This has the effect of reducing the cost of the lightning arrester for distribution.
【図１】本発明の第１の実施例の要部正面図。FIG. 1 is a front view of a main part of a first embodiment of the present invention.
【図２】本発明の第２の実施例の要部正面図。FIG. 2 is a front view of a main part of a second embodiment of the present invention.
【図３】従来の配電用避雷器の正面図。FIG. 3 is a front view of a conventional power distribution arrester.
１…避雷器の碍管 ２…線路端子 ３…アース部 ４…取付バンド ５…アース分離装置 ６…アース線 ７…ポリマー笠 ８…碍管の笠部 DESCRIPTION OF SYMBOLS 1 ... Insulator tube of lightning arrester 2 ... Line terminal 3 ... Ground part 4 ... Mounting band 5 ... Ground separating device 6 ... Ground wire 7 ... Polymer cap 8 ... Insulator cap part
Claims (2)
該碍管を避雷器取付部材に取り付ける取付バンドと、ア
ース分離装置に接続されるアース端子を有するアース部
とを備えた避雷器において、 前記取付バンドとアース部との間のアース部寄りの碍管
外周に、該碍管の外径より大きい径を有するポリマー笠
を取り付けて取付バンドとアース部間の碍管の長さを短
縮したことを特徴とする配電用避雷器。1. An insulator tube for a lightning arrester containing a ZnO element,
In a lightning arrester comprising a mounting band for mounting the porcelain bushing on a lightning arrester mounting member, and a grounding part having a grounding terminal connected to a grounding separation device, on the outer periphery of the stadium near the grounding part between the mounting band and the grounding part, A surge arrester for power distribution, characterized in that a length of the porcelain insulator between the mounting band and the ground portion is shortened by attaching a polymer shade having a diameter larger than the outer diameter of the porcelain insulator.
該碍管を避雷器取付部材に取り付ける取付バンドと、ア
ース分離装置に接続されるアース端子を有するアース部
とを備えた避雷器において、 前記取付バンドとアース部との間の碍管自体に、少なく
ともアース部の外径より大径の笠部を設けたことを特徴
とする配電用避雷器。2. A lightning arrester tube containing a ZnO element,
A lightning arrester comprising a mounting band for mounting the porcelain bushing on a lightning arrester mounting member, and a grounding part having a grounding terminal connected to a grounding separation device, wherein the porcelain tube itself between the mounting band and the grounding part has at least the grounding part. A lightning arrester for power distribution, which is provided with a cap portion having a diameter larger than the outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7027595A JPH08273906A (en) | 1995-03-29 | 1995-03-29 | Arrester for power distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7027595A JPH08273906A (en) | 1995-03-29 | 1995-03-29 | Arrester for power distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08273906A true JPH08273906A (en) | 1996-10-18 |
Family
ID=13426805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7027595A Pending JPH08273906A (en) | 1995-03-29 | 1995-03-29 | Arrester for power distribution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08273906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820112A (en) * | 2012-08-31 | 2012-12-12 | 慈溪市供电局 | Lightning arrester |
-
1995
- 1995-03-29 JP JP7027595A patent/JPH08273906A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820112A (en) * | 2012-08-31 | 2012-12-12 | 慈溪市供电局 | Lightning arrester |
| CN102820112B (en) * | 2012-08-31 | 2015-10-21 | 慈溪市供电局 | A kind of lightning arrester |
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