JPH05290681A - Disconnector with resistance - Google Patents

Disconnector with resistance

Info

Publication number
JPH05290681A
JPH05290681A JP9636492A JP9636492A JPH05290681A JP H05290681 A JPH05290681 A JP H05290681A JP 9636492 A JP9636492 A JP 9636492A JP 9636492 A JP9636492 A JP 9636492A JP H05290681 A JPH05290681 A JP H05290681A
Authority
JP
Japan
Prior art keywords
shield
resistance
movable
side electrode
resistor
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
Application number
JP9636492A
Other languages
Japanese (ja)
Other versions
JP3233440B2 (en
Inventor
Hiroshi Kaneda
浩 金田
Satoshi Matsumoto
松本　　聡
Shozo Nihei
尚三 二瓶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP09636492A priority Critical patent/JP3233440B2/en
Publication of JPH05290681A publication Critical patent/JPH05290681A/en
Application granted granted Critical
Publication of JP3233440B2 publication Critical patent/JP3233440B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

PURPOSE:To provide a highly reliable disconnector with resistance excellent in various characteristics such as opening and closing characteristic and insulating performance by allowing to prevent the damage of a movable contact and a shield with resistance at minimum. CONSTITUTION:A disconnector with resistance has a movable side electrode 2 and fixed side electrode 3 arranged opposite to each other; a movable contact 4 arranged in such a manner as to be capable of sliding to the movable side electrode 2 and touched to and separated from the fixed side electrode 3 by its axial reciprocation; and a shield 5 with resistance provided on the outer circumferential part of the fixed side electrode 3. The movable contact 4 and the shield 5 with resistance are constituted in such a manner that the gap length between them is circumferentially uneven. Desirably, arc resisting materials 4a, 5a are locally provided on either one or both of the flashover generating parts of the movable contact 4 and the shield 5 with resistance.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、変電所・開閉所におい
て使用されるガス絶縁開閉装置に係り、特に、電路を開
閉するための抵抗付き断路器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-insulated switchgear used in a substation or switchgear, and more particularly to a disconnector with a resistance for opening and closing an electric line.

【０００２】[0002]

【従来の技術】近年、電力系統の変電所や開閉所におい
ては、断路器の開閉時に生じる断路器サージを低減する
ために、固定側電極の外周部に、抵抗体付きシールドを
有する抵抗付き断路器が使用されている。図９及び図１
０は、このような抵抗付き断路器の一例として、固定側
電極の外周部に抵抗体接点部シールドを有する抵抗付き
断路器を示す図であり、図９は抵抗付き断路器全体を示
す構成図、図１０は図９の原理図である。以下には、こ
の抵抗付き断路器の構成について、より具体的に説明す
る。2. Description of the Related Art In recent years, in substations and switchyards of electric power systems, in order to reduce the disconnector surge that occurs when the disconnector is opened and closed, a resistance disconnector having a shield with a resistor is provided on the outer peripheral portion of the fixed electrode. Vessels are being used. 9 and 1
FIG. 0 is a diagram showing a disconnector with resistance having a resistor contact portion shield on the outer periphery of the fixed electrode as an example of such a disconnector with resistance, and FIG. 9 is a configuration diagram showing the entire disconnector with resistance. 10 is a principle diagram of FIG. Below, the structure of this disconnector with resistance will be described more specifically.

【０００３】まず、図９及び図１０に示すように、タン
ク１内には、可動側電極２と固定側電極３とが対向配置
され、この可動側電極２及び固定側電極３は、弾性を有
する内側のフィンガー２ａ，３ａと外側のシールド２
ｂ，３ｂとによってそれぞれ構成されている。そして、
可動側電極２のフィンガー２ａの内部空間には、可動接
触子４が、その軸方向に往復動可能に挿入されており、
この可動接触子４の動作によって、可動側電極２と固定
側電極３との間の開閉が行われるように構成されてい
る。すなわち、可動接触子４は、可動側電極２のフィン
ガー２ａの内面に対して摺動し、可動側電極２との電気
的接続を常時保持されると共に、閉極時には、その対向
側の端部にて固定側電極３のフィンガー３ａの内面に接
触し、固定側電極３と電気的に接続されるように構成さ
れている。First, as shown in FIGS. 9 and 10, a movable side electrode 2 and a fixed side electrode 3 are arranged to face each other in a tank 1, and the movable side electrode 2 and the fixed side electrode 3 have elasticity. Inner fingers 2a, 3a and outer shield 2
b and 3b, respectively. And
The movable contactor 4 is inserted in the internal space of the finger 2a of the movable electrode 2 so as to reciprocate in the axial direction,
By the operation of the movable contactor 4, the movable side electrode 2 and the fixed side electrode 3 are opened and closed. That is, the movable contactor 4 slides on the inner surface of the finger 2a of the movable-side electrode 2 to always maintain an electrical connection with the movable-side electrode 2, and at the time of closing, the end portion on the opposite side thereof. Is contacted with the inner surface of the finger 3a of the fixed-side electrode 3 and electrically connected to the fixed-side electrode 3.

【０００４】また、固定側電極３の周囲には、抵抗体接
点部シールド５が配置されている。この抵抗体接点部シ
ールド５は、断路器サージを十分に低減できる値の抵抗
体６を備えており、その背面側（対向側と反対側）の端
部にて固定側電極３と電気的に接続されている。さら
に、可動接触子４と抵抗体接点部シールド５は、その間
のギャップ長が、円周方向における全周部分で均一とな
るように構成されている。すなわち、図中に示すよう
に、可動接触子４と抵抗体接点部シールド５との間の円
周方向における任意の２箇所のギャップ長ｇ1 ，ｇ
2 が、常に［ｇ1 ＝ｇ2］の関係を有するように構成さ
れている。そして、可動接触子２、固定側電極３、及び
抵抗体接点部シールド５は、可動接触子４と抵抗体接点
部シールド５との間でフラッシオーバが発生するように
配置されている。A resistor contact point shield 5 is arranged around the fixed electrode 3. The resistor contact point shield 5 is provided with a resistor 6 having a value capable of sufficiently reducing the disconnector surge, and is electrically connected to the fixed-side electrode 3 at its rear end (opposite side and opposite side). It is connected. Further, the movable contactor 4 and the resistor contact portion shield 5 are configured such that the gap length between them is uniform over the entire circumference in the circumferential direction. That is, as shown in the drawing, gap lengths g 1 and g at arbitrary two positions in the circumferential direction between the movable contact 4 and the resistor contact portion shield 5
2 is always configured to have a relationship of [g 1 = g 2 ]. The movable contact 2, the fixed electrode 3, and the resistor contact point shield 5 are arranged so that flashover occurs between the movable contact 4 and the resistor contact point shield 5.

【０００５】以上のような構成を有する図９及び図１０
の抵抗付き断路器の作用は次の通りである。すなわち、
可動接触子２、固定側電極３、及び抵抗体接点部シール
ド５の配置により、断路器開閉時においては、サージの
発生原因であるフラッシオーバが、可動接触子４と抵抗
体接点部シールド５との間で発生するため、発生した断
路器サージは、抵抗体接点部シールド５を構成する抵抗
体６によって低減される。9 and 10 having the above configuration
The operation of the disconnector with resistance is as follows. That is,
By disposing the movable contact 2, the fixed-side electrode 3, and the resistor contact portion shield 5, the flashover, which is a cause of the surge, is generated between the movable contact 4 and the resistor contact portion shield 5 when the disconnector is opened and closed. The generated disconnector surge is reduced by the resistor 6 constituting the resistor contact point shield 5.

【０００６】[0006]

【発明が解決しようとする課題】ところで、上述したよ
うな従来の抵抗付き断路器においては、可動接触子４と
抵抗体接点部シールド５の間のギャップ長が、円周方向
における全周囲部分で均一となるように構成されている
ため、可動接触子４と抵抗体接点部シールド５の間に生
じるフラッシオーバにより、可動接触子４及び抵抗体接
点部シールド５が、その円周方向の広範囲に亘って損傷
し易い。このような可動接触子４及び抵抗体接点部シー
ルド５の損傷は、動作回数を重ねるに従って増大し、摺
動の不安定化による開閉特性・絶縁性能の低下などの各
種の特性の低下を誘発し、また、分解生成物を生じ易く
なるという欠点を生じることが知られている。なお、以
上のような欠点は、固定側電極のシールドに抵抗体を設
けた場合にも、同様に存在している。By the way, in the conventional disconnector with resistance as described above, the gap length between the movable contactor 4 and the resistor contact portion shield 5 is the entire circumference in the circumferential direction. Since it is configured to be uniform, the movable contact 4 and the resistor contact portion shield 5 are spread over a wide range in the circumferential direction due to the flashover between the movable contactor 4 and the resistor contact portion shield 5. Easy to be damaged over. Such damage to the movable contactor 4 and the resistor contact point shield 5 increases as the number of operations increases, and causes various characteristics such as switching characteristics and insulation performance to deteriorate due to instability of sliding. It is also known to cause a drawback that decomposition products are easily generated. The above-mentioned drawbacks also exist when the shield is provided on the fixed electrode with a resistor.

【０００７】本発明は、上述したような従来技術の課題
を解決するために提案されたものであり、その目的は、
断路器サージによる接点部の損傷を最小限に抑制可能と
することにより、開閉特性・絶縁性能などの各種の特性
が高く、信頼性の高い、優れた抵抗付き断路器を提供す
ることである。The present invention has been proposed in order to solve the problems of the prior art as described above, and its purpose is to:
An object of the present invention is to provide an excellent disconnector with resistance, which has various characteristics such as switching characteristics and insulation performance, and which is highly reliable by making it possible to minimize damage to the contact portion due to disconnector surge.

【０００８】[0008]

【課題を解決するための手段】本発明による抵抗付き断
路器は、互いに対向して配置された可動側電極及び固定
側電極と、可動側電極に対して摺動可動に配置され、そ
の軸方向に往復動して固定側電極と接離する可動接触子
と、固定側電極の外周部に設けられた抵抗体付きシール
ドとを有する抵抗付き断路器において、前記可動接触子
と前記抵抗体付きシールドが、その間のギャップ長が円
周方向に不均一となるように構成されたことを特徴とし
ている。具体的には、可動接触子と抵抗体付きシールド
との間のギャップ長として、［ｇ1 ＜ｇ2 ］の関係を有
するギャップ長ｇ1 ，ｇ2 部分を有するように構成す
る。DISCLOSURE OF THE INVENTION A disconnector with resistance according to the present invention is provided with a movable side electrode and a fixed side electrode, which are arranged to face each other, and slidably movable with respect to the movable side electrode. In a disconnector with resistance having a movable contactor that reciprocates in and out of contact with and separates from a fixed-side electrode, and a shield with a resistor provided on an outer peripheral portion of the fixed-side electrode, the movable contactor and the shield with a resistor are provided. However, it is characterized in that the gap length therebetween is nonuniform in the circumferential direction. Specifically, as the gap length between the movable contactor and the shield with a resistor, there are gap lengths g 1 and g 2 having a relationship of [g 1 <g 2 ].

【０００９】また、可動接触子と抵抗体付きシールドの
いずれか一方または両方のフラッシオーバ発生部には、
耐アーク性材料を局部的に備えることが望ましい。そし
て、可動接触子と抵抗体付きシールドとのギャップ長を
不均一とするためには、具体的には、可動接触子と抵抗
体付きシールドの中心軸をずらす構成、あるいは、いず
れか一方または両方に凸部または凹部を設ける構成など
が採用可能である。さらに、抵抗体付きシールドは、具
体的には、固定側電極の外周部に設けられた抵抗接点部
のシールド、または、固定側電極のシールドである。Further, in either or both of the movable contactor and the shield with a resistor, a flashover generating portion,
It is desirable to locally provide arc resistant material. Then, in order to make the gap length between the movable contactor and the shield with a resistor nonuniform, specifically, the configuration in which the central axes of the movable contactor and the shield with a resistor are shifted, or either one or both It is possible to employ a configuration in which a convex portion or a concave portion is provided on the. Further, the shield with a resistor is specifically a shield of a resistance contact portion provided on the outer peripheral portion of the fixed-side electrode or a shield of the fixed-side electrode.

【００１０】[0010]

【作用】以上のような構成を有する本発明の抵抗付き断
路器においては、可動接触子と抵抗体付きシールドとの
間のギャップ長を円周方向に不均一となるように構成す
ることにより、ギャップ長の短い部分に電界が集中し、
この電界集中部分にフラッシオーバが発生することにな
る。すなわち、より具体的には、［ｇ1 ＜ｇ2 ］の関係
を有するギャップ長ｇ1 ，ｇ2 部分のうちのギャップ長
ｇ1 部分の電界が、ギャップ長ｇ2 部分よりも密になる
ため、断路器開閉により発生する断路器サージの原因と
なるフラッシオーバが、常に、電界集中部分であるギャ
ップ長ｇ1部分で発生することになる。そして、このよ
うに、フラッシオーバ発生部分を局所集中化できるた
め、可動接触子と抵抗体付きシールドとの損傷範囲を極
めて狭い部分に限定することができる。また、可動接触
子と抵抗体付きシールドのいずれか一方または両方のフ
ラッシオーバ発生部（集中部）に、耐アーク性材料を局
部的に備えた場合には、アークによる損傷の発生を防止
できる。In the disconnector with resistance of the present invention having the above-mentioned structure, the gap length between the movable contactor and the shield with resistor is made nonuniform in the circumferential direction, The electric field concentrates on the part where the gap length is short,
Flashover occurs in this electric field concentrated portion. That is, more specifically, the electric field of the gap length g 1 portion of the gap length g 1 and g 2 portions having the relationship of [g 1 <g 2 ] becomes denser than the gap length g 2 portion. A flashover, which causes a disconnector surge generated by opening and closing the disconnector, always occurs in the gap length g 1 portion which is the electric field concentration portion. Since the flashover occurrence portion can be locally concentrated in this way, the damage range between the movable contactor and the shield with a resistor can be limited to an extremely narrow portion. Further, when arc-resistant material is locally provided in the flashover generating portion (concentrated portion) of either or both of the movable contactor and the shield with a resistor, it is possible to prevent the occurrence of damage due to the arc.

【００１１】[0011]

【実施例】以下には、本発明による抵抗付き断路器の幾
つかの実施例について、図１乃至図８を参照して具体的
に説明する。なお、図９及び図１０に示した従来技術と
同一部分には同一符号を付している。EXAMPLES Some examples of the disconnecting switch with resistance according to the present invention will be specifically described below with reference to FIGS. 1 to 8. The same parts as those of the prior art shown in FIGS. 9 and 10 are designated by the same reference numerals.

【００１２】まず、図１乃至図３は、本発明を、固定側
電極の外周部に抵抗体接点部シールドを有する抵抗付き
断路器に適用してなる代表的な実施例（第１実施例）を
示す図であり、図１は抵抗付き断路器全体を示す構成
図、図２は図１の原理図、図３は図１のＡ−Ａ線断面図
である。本実施例の基本的な部品構成は、図９及び図１
０に示した従来技術と同様である。すなわち、図１及び
図２に示すように、タンク１内には、可動側電極２と固
定側電極３とが対向配置され、内側のフィンガー２ａ，
３ａと外側のシールド２ｂ，３ｂとによってそれぞれ構
成されている。また、可動側電極２の内部に挿入された
可動接触子４の往復動によって、可動側電極２と固定側
電極３との間の開閉が行われるように構成されている。
さらに、固定側電極３の周囲には、抵抗体接点部シール
ド５が配置されている。この抵抗体接点部シールド５
は、断路器サージを十分に低減できる値の抵抗体６を備
えており、その背面側（対向側と反対側）の端部にて固
定側電極３と電気的に接続されている。First, FIGS. 1 to 3 show a typical embodiment (first embodiment) in which the present invention is applied to a disconnector with a resistor having a resistor contact portion shield on an outer peripheral portion of a fixed side electrode. FIG. 1 is a configuration diagram showing the entire disconnecting switch with resistance, FIG. 2 is a principle diagram of FIG. 1, and FIG. 3 is a sectional view taken along the line AA of FIG. The basic parts structure of this embodiment is shown in FIGS.
This is similar to the related art shown in FIG. That is, as shown in FIGS. 1 and 2, in the tank 1, the movable electrode 2 and the fixed electrode 3 are arranged to face each other, and the inner fingers 2a,
3a and outer shields 2b and 3b, respectively. Further, the movable contactor 4 inserted inside the movable electrode 2 is reciprocated to open and close between the movable electrode 2 and the fixed electrode 3.
Further, a resistor contact point shield 5 is arranged around the fixed electrode 3. This resistor contact point shield 5
Includes a resistor 6 having a value capable of sufficiently reducing the disconnector surge, and is electrically connected to the fixed-side electrode 3 at its rear end (opposite side and opposite side).

【００１３】そして、以上のような基本的な部品構成に
加え、本実施例では、可動接触子４と抵抗体接点部シー
ルド５との間の円周方向において、［ｇ1 ＜ｇ2 ］の関
係を有し、且つ、円周方向の任意の部分のギャップ長ｇ
n に対して、［ｇ1 ≦ｇn ，ｇn ≦ｇ2 ］の関係を有す
るような、最小ギャップ長ｇ1 部分及び最大ギャップ長
ｇ2 部分が与えられている。このような最小ギャップ長
ｇ1 部分及び最大ギャップ長ｇ2 部分は、図３に示すよ
うに、可動接触子４と抵抗体接点部シールド５の中心軸
をずらすことによって構成されている。さらに、可動接
触子４と抵抗体接点部シールド５のフラッシオーバ発生
部に当たるギャップ長ｇ1 部分には、耐アーク性電極４
ａ，５ａがそれぞれ設けられている。耐アーク性電極４
ａ，５ａの材料としては、例えば、鉄や銅合金などが使
用可能である。In addition to the basic component structure as described above, in this embodiment, in the circumferential direction between the movable contact 4 and the resistor contact portion shield 5, [g 1 <g 2 ] Gap length g of an arbitrary portion having a relationship and in the circumferential direction
against n, it is given [g 1 ≦ g n, g n ≦ g 2] as having a relationship, the minimum gap length g 1 portion and the maximum gap length g 2 portions. The minimum gap length g 1 portion and the maximum gap length g 2 portion are formed by shifting the central axes of the movable contactor 4 and the resistor contact portion shield 5 as shown in FIG. Further, in the gap length g 1 portion corresponding to the flashover generation portion of the movable contact 4 and the resistor contact portion shield 5, the arc resistant electrode 4
a and 5a are provided respectively. Arc resistant electrode 4
As the material of a and 5a, for example, iron or copper alloy can be used.

【００１４】以上のような構成を有する本実施例の抵抗
付き断路器の作用を説明する。すなわち、前述した通
り、図９及び図１０に示すような従来技術において、可
動接触子４と抵抗体接点部シールド５の間のギャップ長
は、円周方向における全周部分で均一であったため、断
路器開閉に伴なうフラッシオーバは、可動接触子４と抵
抗体接点部シールド５の円周方向の全周に亘って生じて
いた。これに対し、本実施例においては、可動接触子４
と抵抗体接点部シールド５の中心軸をずらすことで、
［ｇ1 ＜ｇ2 ］の関係を有し、且つ、円周方向の任意の
部分のギャップ長ｇn に対して、［ｇ1 ≦ｇn ，ｇn ≦
ｇ2 ］の関係を有するような、最小ギャップ長ｇ1 部分
及び最大ギャップ長ｇ2 部分を設けているため、最小ギ
ャップ長ｇ1部分に電界が集中する。この結果、本実施
例では、断路器開閉により発生する断路器サージの原因
となるフラッシオーバが、常に、電界集中部分である最
小ギャップ長ｇ1 部分で発生することになり、フラッシ
オーバ発生部分を最小ギャップ長ｇ1 部分に局所集中化
できる。加えて、このフラッシオーバ発生部分には、鉄
や銅合金などの材料による耐アーク性電極４ａ，５ａを
それぞれ設けているため、アークによる損傷の発生を防
止できる。The operation of the disconnecting switch with resistance of the present embodiment having the above-mentioned structure will be described. That is, as described above, in the prior art as shown in FIGS. 9 and 10, the gap length between the movable contactor 4 and the resistor contact portion shield 5 was uniform in the entire circumferential portion, The flashover caused by opening and closing of the disconnector occurred over the entire circumference of the movable contactor 4 and the resistor contact point shield 5 in the circumferential direction. On the other hand, in the present embodiment, the movable contactor 4
And by shifting the central axis of the resistor contact point shield 5,
[G 1 <g 2 ], and [g 1 ≦ g n , g n ≦ with respect to the gap length g n of an arbitrary portion in the circumferential direction.
Since the minimum gap length g 1 portion and the maximum gap length g 2 portion having the relationship of [g 2 ] are provided, the electric field is concentrated on the minimum gap length g 1 portion. As a result, in this embodiment, the flashover that causes the disconnector surge generated by opening and closing the disconnector always occurs at the minimum gap length g 1 that is the electric field concentration portion, and the flashover occurrence portion is generated. It can be locally concentrated in the minimum gap length g 1 . In addition, since arc-resistant electrodes 4a and 5a made of a material such as iron or copper alloy are provided in the flashover occurrence portion, it is possible to prevent damage due to arc.

【００１５】以上のように、本実施例によれば、断路器
サージによる接点部損傷を局部集中することが可能であ
るため、これにより、耐アーク対策を施す箇所を、可動
接触子４と抵抗体接点部シールド５の一部に限定するこ
とができ、この効果に関連して、この限定部分に耐アー
ク性電極４ａ，５ａを設けることによって、同部の損傷
を防止できる。従って、可動接触子４及び抵抗体付きシ
ールド５の損傷を有効に防止できるため、摺動を安定化
させて開閉特性・絶縁性能などの各種の特性を向上で
き、また、分解生成物が生じ難くなり、信頼性を向上で
きる。As described above, according to this embodiment, it is possible to locally concentrate the contact damage due to the disconnecting switch surge. Therefore, the location where the anti-arcing is to be applied should be the movable contact 4 and the resistance. It can be limited to a part of the body contact part shield 5, and in connection with this effect, by providing the arc resistant electrodes 4a and 5a in this limited part, damage to the part can be prevented. Therefore, the movable contact 4 and the shield 5 with a resistor can be effectively prevented from being damaged, so that sliding can be stabilized and various characteristics such as opening / closing characteristics and insulation performance can be improved, and decomposition products hardly occur. Therefore, the reliability can be improved.

【００１６】なお、本発明は前記第１実施例に限定され
るものではなく、例えば、ギャップ長を不均一とする構
成としては、図４乃至図７に示すような第２乃至第５の
実施例が可能である。すなわち、これらの実施例は、可
動接触子４と抵抗体付きシールド５の中心軸を同一とし
たままで、可動接触子４と抵抗体付きシールド５の耐ア
ーク性電極４ａ，５ａのいずれか一方に凸部または凹部
を設けることによって、最小ギャップ長ｇ1 部分及び最
大ギャップ長ｇ2 部分を形成したものである。このよう
に構成した場合にも、前記実施例と同様に、フラッシオ
ーバの発生範囲を、最小ギャップ長ｇ1 部分に局所集中
化でき、且つ、同部の損傷を防止できる。また、可動接
触子４と抵抗体付きシールド５の耐アーク性電極４ａ，
５ａの両方に凸部または凹部を設けることによって最小
ギャップ長ｇ1 部分及び最大ギャップ長ｇ2 部分を形成
する構成も同様に可能であり、同様の作用効果を得られ
る。The present invention is not limited to the first embodiment described above. For example, as a configuration for making the gap length non-uniform, the second to fifth embodiments shown in FIGS. Examples are possible. That is, in these examples, one of the arc-resistant electrodes 4a and 5a of the movable contactor 4 and the shield with resistor 5a is used while keeping the central axes of the movable contactor 4 and the shield with resistor 5 the same. The minimum gap length g 1 portion and the maximum gap length g 2 portion are formed by providing a convex portion or a concave portion on the. Even in the case of such a configuration, similarly to the above-described embodiment, the flashover occurrence range can be locally concentrated in the minimum gap length g 1 portion, and damage to the same portion can be prevented. In addition, the movable contactor 4 and the arc-resistant electrode 4a of the shield 5 with a resistor,
A configuration in which the minimum gap length g 1 portion and the maximum gap length g 2 portion are formed by providing a convex portion or a concave portion on both 5a is also possible, and similar operational effects can be obtained.

【００１７】一方、図８に示すように、第６実施例とし
て、固定側電極３のシールド３ｂに抵抗体６を設け、可
動接触子４とシールド３ｂの間のギャップ長を不均一と
した場合にも、前記各実施例と同様の作用効果を得るこ
とができる。On the other hand, as shown in FIG. 8, as a sixth embodiment, when the resistor 6 is provided on the shield 3b of the fixed electrode 3 and the gap length between the movable contact 4 and the shield 3b is made nonuniform. Also, it is possible to obtain the same effects as those of the above-mentioned respective embodiments.

【００１８】[0018]

【発明の効果】以上説明したように、本発明において
は、可動接触子と抵抗体付きシールドとの間のギャップ
長を円周方向に不均一となるように構成することによ
り、断路器サージによる接点部の損傷箇所を局部集中化
して損傷を最小限に抑制可能であるため、開閉特性・絶
縁性能などの各種の特性が高く、信頼性の高い、優れた
抵抗付き断路器を提供することができる。また、接点部
のフラッシオーバ発生部に、耐アーク性材料を局部的に
備えた場合には、アークによる損傷の発生を防止できる
ため、開閉特性・絶縁性能及び信頼性のより優れた抵抗
付き断路器を提供できる。As described above, according to the present invention, the gap length between the movable contactor and the shield with the resistor is made nonuniform in the circumferential direction, so that the disconnection surge is caused. Since it is possible to minimize the damage by centralizing the damaged parts of the contact part locally, it is possible to provide a highly reliable and excellent disconnect switch with various characteristics such as switching characteristics and insulation performance. it can. In addition, when arc-resistant material is locally provided in the flashover occurrence part of the contact part, it is possible to prevent damage due to arc, so disconnecting with resistance that has more excellent switching characteristics, insulation performance and reliability. Can be provided.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明による代表的な実施例（第１実施例）の
抵抗付き断路器全体を示す構成図。FIG. 1 is a configuration diagram showing an entire disconnecting switch with a resistor according to a typical embodiment (first embodiment) of the present invention.

【図２】図１の原理図。FIG. 2 is a principle diagram of FIG.

【図３】図１のＡ−Ａ線断面図。3 is a cross-sectional view taken along the line AA of FIG.

【図４】本発明による第２実施例の抵抗付き断路器にお
いて、図３に対応する部分を示す断面図。FIG. 4 is a sectional view showing a portion corresponding to FIG. 3 in the disconnecting switch with resistance of the second embodiment according to the present invention.

【図５】本発明による第３実施例の抵抗付き断路器にお
いて、図３に対応する部分を示す断面図。FIG. 5 is a sectional view showing a portion corresponding to FIG. 3 in the disconnector with resistance of the third embodiment according to the present invention.

【図６】本発明による第４実施例の抵抗付き断路器にお
いて、図３に対応する部分を示す断面図。FIG. 6 is a sectional view showing a portion corresponding to FIG. 3 in the disconnector with resistance of the fourth embodiment according to the present invention.

【図７】本発明による第５実施例の抵抗付き断路器にお
いて、図３に対応する部分を示す断面図。FIG. 7 is a cross-sectional view showing a portion corresponding to FIG. 3 in the disconnector with resistance of the fifth embodiment according to the present invention.

【図８】本発明による第６実施例の抵抗付き断路器を示
す原理図。FIG. 8 is a principle view showing a disconnector with resistance of a sixth embodiment according to the present invention.

【図９】従来の抵抗付き断路器全体の一例を示す構成
図。FIG. 9 is a configuration diagram showing an example of the entire conventional disconnector with resistance.

【図１０】図９の原理図。FIG. 10 is a principle diagram of FIG. 9.

【符号の説明】[Explanation of symbols]

１…タンク ２…可動側電極 ２ａ，３ａ…フィンガー ２ｂ，３ｂ…シールド ３…固定側電極 ４…可動接触子 ４ａ，５ａ…耐アーク性電極 ５…抵抗体接点部シールド ６…抵抗体 DESCRIPTION OF SYMBOLS 1 ... Tank 2 ... Movable side electrode 2a, 3a ... Finger 2b, 3b ... Shield 3 ... Fixed side electrode 4 ... Movable contactor 4a, 5a ... Arc resistant electrode 5 ... Resistor contact part shield 6 ... Resistor

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 互いに対向して配置された可動側電極及
び固定側電極と、可動側電極に対して摺動可動に配置さ
れ、その軸方向に往復動して固定側電極と接離する可動
接触子と、固定側電極の外周部に設けられた抵抗体付き
シールドとを有する抵抗付き断路器において、 前記可動接触子と前記抵抗体付きシールドが、その間の
ギャップ長が円周方向に不均一となるように構成された
ことを特徴とする抵抗付き断路器。1. A movable-side electrode and a fixed-side electrode that are arranged to face each other, and a movable-side electrode that is slidably movable with respect to the movable-side electrode and reciprocates in the axial direction to come in contact with and separate from the fixed-side electrode. In a disconnector with a resistor having a contactor and a shield with a resistor provided on an outer peripheral portion of a fixed electrode, a gap length between the movable contactor and the shield with a resistor is not uniform in a circumferential direction. A disconnecting switch with resistance, characterized in that 【請求項２】 可動接触子と抵抗体付きシールドが、そ
のいずれか一方または両方のフラッシオーバ発生部に、
耐アーク性材料を局部的に備えたことを特徴とする請求
項１に記載の抵抗付き断路器。2. The movable contactor and the shield with a resistor are provided in one or both of the flashover generating portions,
The disconnector with resistance according to claim 1, further comprising an arc resistant material locally.
JP09636492A 1992-04-16 1992-04-16 Disconnector with resistance Expired - Fee Related JP3233440B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09636492A JP3233440B2 (en) 1992-04-16 1992-04-16 Disconnector with resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09636492A JP3233440B2 (en) 1992-04-16 1992-04-16 Disconnector with resistance

Publications (2)

Publication Number Publication Date
JPH05290681A true JPH05290681A (en) 1993-11-05
JP3233440B2 JP3233440B2 (en) 2001-11-26

Family

ID=14162933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09636492A Expired - Fee Related JP3233440B2 (en) 1992-04-16 1992-04-16 Disconnector with resistance

Country Status (1)

Country Link
JP (1) JP3233440B2 (en)

Also Published As

Publication number Publication date
JP3233440B2 (en) 2001-11-26

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