JPH06119851A - Gas insulation switch - Google Patents
Gas insulation switchInfo
- Publication number
- JPH06119851A JPH06119851A JP26567192A JP26567192A JPH06119851A JP H06119851 A JPH06119851 A JP H06119851A JP 26567192 A JP26567192 A JP 26567192A JP 26567192 A JP26567192 A JP 26567192A JP H06119851 A JPH06119851 A JP H06119851A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- contact
- movable
- movable contact
- main
- 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.)
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、絶縁ガスを充填した密
閉容器内に収容され、系統の定格負荷以下の電流を開閉
するガス絶縁開閉器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-insulated switch which is housed in a closed container filled with an insulating gas and which switches a current below a rated load of the system.
【０００２】[0002]
【従来の技術】近年、電力系統における開閉装置の簡略
化と経済的運用の必要性から、断路器にもある程度の負
荷電流に対する開閉能力が要求されるようになってき
た。その１例として、図５に示すような系統の切り離し
がある。即ち、２系統の送電母線Ａ，Ｂの電源側Ｐ及び
負荷側Ｌがそれぞれ共通化されており、しかも、開閉器
Ｃa ，Ｃb を介してループを形成しているような場合に
おける一方の系統の切り離しである。2. Description of the Related Art In recent years, due to the simplification of switchgear in a power system and the need for economical operation, a disconnector has also been required to have a switching capacity for a certain load current. One example is disconnection of the system as shown in FIG. That is, in the case where the power source side P and the load side L of the two transmission buses A and B are respectively made common and moreover, a loop is formed via the switches C a and C b . It is the disconnection of the system.
【０００３】この場合において、前記開閉器Ｃa ，Ｃb
としては並切形の接点を用いるが、これでは開閉器とし
て遮断能力が不足する場合には、遮断能力を高めるため
に、ガス吹き付け形の接点を採用するようにしているも
のもある。しかし、ガス吹き付け形の場合には、操作力
がかなり大きくなり、構造も複雑になる。In this case, the switches C a and C b
As a contact, a parallel cut type contact is used. However, if the breaking ability of the switch is insufficient, in some cases a gas spraying type contact is adopted in order to enhance the breaking ability. However, in the case of the gas blowing type, the operating force becomes considerably large and the structure becomes complicated.
【０００４】これに対し、遮断能力を簡易な構造で高
め、しかも操作力をあまり要しないものとして、従来よ
り利用されてきたものに、磁界によりアークを回転させ
て消弧するという消弧方式がある。On the other hand, an arc extinguishing method in which the arc is extinguished by rotating the arc by a magnetic field is used in addition to the one which has been conventionally used as a device which has a simple structure to enhance the breaking ability and which does not require much operation force. is there.
【０００５】この様な磁界によりアークを回転駆動して
消弧する方式の断路器の一例を図６に示した。即ち、ガ
ス絶縁開閉器断路部１０は、主通電接触部１１とその内
側に設けられたアーク接触部１２との組合せ構造からな
り、これらは図示しないＳＦ6 絶縁ガスを充填したガス
絶縁開閉器ケース内に納められている。前記主通電接触
部１１は、固定接触部材１３に板バネ１４を挿入して取
り付けた主通電固定接触子１５と、図示しない開閉操作
ロッドにより図中左右方向に駆動させられる筒状の主通
電可動接触子１６とから構成されている。また、主通電
接触部１１は、固定接触部材１３に一端を固定したシー
ルド１７で覆われている。FIG. 6 shows an example of a disconnector of the type in which an arc is rotatively driven by such a magnetic field to extinguish the arc. That is, the gas-insulated switch disconnecting section 10 has a combined structure of a main energizing contact section 11 and an arc contact section 12 provided inside the main energizing contact section 11. These are gas-insulated switch case filled with SF 6 insulating gas (not shown). It is housed inside. The main energizing contact portion 11 is a main energizing fixed contactor 15 in which a leaf spring 14 is inserted and attached to a fixed contact member 13, and a cylindrical main energizing movable member which is driven in the left-right direction in the drawing by an opening / closing operation rod (not shown). It is composed of a contactor 16. The main energizing contact portion 11 is covered with a shield 17 having one end fixed to the fixed contact member 13.
【０００６】また、前記アーク接触部１２は、アーク固
定接触部とアーク可動接触部とから構成されている。前
記アーク固定接触部は、一端が固定接触部材１３に固定
され、他端が前記主通電可動接触子１６の内側に延長さ
れ、さらにその先端に耐弧金属より成る第３アーク固定
接触子１８が配設されたアーク固定接触子１９から構成
されている。また、前記アーク可動接触部は、前記主通
電可動接触子１６の内側に一体化して設けられた第１ア
ーク可動接触子２０、コイル２１および耐弧金属より成
る第２アーク可動接触子２２とから構成されている。The arc contact section 12 is composed of an arc fixed contact section and an arc movable contact section. One end of the arc fixed contact portion is fixed to the fixed contact member 13, the other end is extended to the inside of the main energizing movable contact member 16, and a third arc fixed contact member 18 made of arc resistant metal is further provided at the tip end thereof. The arc fixed contactor 19 is provided. The movable arc contact portion includes a first movable arc contact 20, a coil 21, and a second movable arc contact 22 made of arc resistant metal, which are integrally provided inside the main energization movable contact 16. It is configured.
【０００７】この様な構成を有する従来の断路器におけ
る磁界消弧方式の原理を、図７〜図９に基づいて説明す
る。即ち、図７は主通電可動接触子１６と主通電固定接
触子１５が接触している状態（第１接点１がＯＮ）を示
したものであるが、電流は図中矢印の経路を流れる。こ
の状態においては、第２接点２（第１アーク可動接触子
２０と第３アーク固定接触子１８より成る接点）、第３
接点３（第２アーク可動接触子２２と第３アーク固定接
触子１８より成る接点）は開極しているため、コイル２
１には電流が流れない。The principle of the magnetic field extinguishing method in the conventional disconnector having such a structure will be described with reference to FIGS. That is, FIG. 7 shows a state where the main energization movable contact 16 and the main energization fixed contact 15 are in contact (the first contact 1 is ON), but the current flows through the path indicated by the arrow in the figure. In this state, the second contact 2 (contact consisting of the first arc movable contact 20 and the third arc fixed contact 18), the third contact 3
Since the contact 3 (contact consisting of the second arc movable contact 22 and the third arc fixed contact 18) is open, the coil 2
No current flows through 1.
【０００８】図８は、図７の状態から主通電可動接触子
１６が開極し、第１接点１が離れた状態を示したもので
ある。なお、接点構造は、第１接点１が開極する直前に
第２接点２が接触するように構成されている。従って、
第１接点１が離れると、電流は図８に示した様に第２接
点２に転流して流れる。この状態においても、第３接点
３は開極しているため、コイル２１には電流が流れな
い。FIG. 8 shows a state in which the main current-carrying movable contact 16 is opened and the first contact 1 is separated from the state shown in FIG. The contact structure is configured so that the second contact 2 contacts immediately before the first contact 1 opens. Therefore,
When the first contact 1 is separated, the current commutates and flows to the second contact 2 as shown in FIG. Even in this state, since the third contact 3 is open, no current flows through the coil 21.
【０００９】図９は図８より更に開極が進んだ状態を示
したものである。即ち、開極が進むと第２接点２と第３
接点３が両方とも接触する状態が瞬時存在し、更に開極
が進み第２接点２が離れると、電流は第３接点３に転流
しコイル２１に流れるようになる。この時、コイルユニ
ットが作る磁界がアークに直角に作用し、これによりア
ークは接触部の円周方向に回転駆動される結果、消弧さ
れることになる。FIG. 9 shows a state in which the contact opening is further advanced than in FIG. That is, when the contact opening progresses, the second contact 2 and the third contact 2
When both contacts 3 are in contact with each other for a moment, and when the contact is further opened and the second contact 2 is separated, the current is commutated to the third contact 3 and flows to the coil 21. At this time, the magnetic field generated by the coil unit acts at right angles to the arc, whereby the arc is driven to rotate in the circumferential direction of the contact portion, and as a result, the arc is extinguished.
【００１０】[0010]
【発明が解決しようとする課題】ところで、上記の様な
消弧方式を用いた従来のガス絶縁開閉器には、以下に述
べる様な解決すべき課題があった。The conventional gas-insulated switch using the arc extinguishing method as described above has the following problems to be solved.
【００１１】即ち、図８に示した様に、主通電接触部１
１が開極する時に、第３アーク固定接触子１８と第１ア
ーク可動接触子２０が接触している状態で、ある程度の
電気回路抵抗を有していることから、この間に電位差が
生じ、主通電接触部１１で発弧が生じる。この場合、ア
ーク接触部に設けられた第１アーク可動接触子２０は、
耐アーク性を兼ねた鉄系金属から構成されているため電
気回路抵抗が大きく、遮断電流が８０００Ａのように大
きくなると、電位差も大きくなり、主通電接触部１１で
の発弧も大きくなる。That is, as shown in FIG.
When 1 is opened, the third arc fixed contact 18 and the first movable arc contact 20 have a certain electric circuit resistance in the state of being in contact with each other. An arc occurs at the energizing contact portion 11. In this case, the first arc movable contactor 20 provided in the arc contact portion is
Since it is made of an iron-based metal that also has arc resistance, the electric circuit resistance is large, and when the breaking current is large, such as 8000 A, the potential difference is large and the arcing at the main energizing contact portion 11 is also large.
【００１２】しかしながら、主通電接触部１１は、開閉
器の投入状態で主通電部になるため、銅製の接触子に銀
メッキがされて表面が滑らかに仕上げられている。この
接触部に大きな発弧が生じると、発弧によって銀メッキ
が剥がれ、表面が著しく損傷する。この様に接触部が損
傷を受けると、負荷電流通電時に過熱する恐れが生じる
だけでなく、表面が損傷した状態で開閉器が動作し摺動
することにより、金属摺動粉が多量に発生し、絶縁性能
を著しく低下させる原因にもなる。However, since the main energizing contact portion 11 becomes the main energizing portion when the switch is turned on, the copper contactor is silver-plated and has a smooth surface. When a large arc is generated at this contact portion, the silver plate is peeled off by the arc, and the surface is significantly damaged. If the contact part is damaged in this way, not only may it overheat when a load current is applied, but the switch may also operate and slide with the surface damaged, causing a large amount of metal sliding powder. It also causes a significant decrease in insulation performance.
【００１３】また、前記第１アーク可動接触子２０が鉄
から構成されているため、主通電接触部１１での発弧が
大きくなるだけでなく、可動部の重量が重くなり、この
可動部を動作させるためには大きな駆動力が必要とな
る。このため操作装置の大形化、機構連結部の強度増加
等の対策を講じる必要が生じ、ＧＩＳのレイアウト構
成、信頼性の上で問題があった。Further, since the first arc movable contact 20 is made of iron, not only the arcing at the main energizing contact portion 11 becomes large, but also the weight of the movable portion becomes heavy. A large driving force is required for operation. Therefore, it is necessary to take measures such as upsizing of the operating device and increase of the strength of the mechanism connecting portion, which causes a problem in the layout configuration and reliability of the GIS.
【００１４】本発明は、上記の様な従来技術の欠点を解
消するために提案されたもので、その目的は、磁界形消
弧方式による開閉器の開閉時に起こる主通電接触部での
発弧を抑え、主通電接触部が損傷しないように構成する
と共に、可動部重量を軽減し、駆動力を低減させたガス
絶縁開閉器を提供することにある。The present invention has been proposed in order to solve the above-mentioned drawbacks of the prior art, and its object is to ignite the main energizing contact portion when the switch is opened / closed by the magnetic field type arc extinguishing system. It is intended to provide a gas-insulated switch which is configured so that the main energization contact portion is prevented from being damaged, the weight of the movable portion is reduced, and the driving force is reduced.
【００１５】[0015]
【課題を解決するための手段】本発明は、固定接触部材
に取付けられた主通電固定接触子と、これとの間で通電
電路を開閉する主通電可動接触子とから成る主通電接触
部と、前記固定接触部材に取付けられたアーク固定接触
子と、これとの間で通電電路を開閉する第１アーク可動
接触子及び第２アーク可動接触子とから構成され、前記
主通電接触部の開極時に発生するアークを回転消弧する
ための磁界を発生させるコイルを設けたアーク接触部と
を備えたガス絶縁開閉器において、前記第１アーク可動
接触子を電気抵抗が低い金属から構成し、その先端部に
耐弧金属より成る第１アーク可動接触子片を取付けたこ
とを特徴とするものである。According to the present invention, there is provided a main current-carrying contact portion comprising a main current-carrying fixed contact attached to a fixed contact member and a main current-carrying movable contactor which opens and closes a current-carrying electric path. An arc stationary contactor attached to the stationary contact member, and a first arc movable contactor and a second arc movable contactor for opening and closing an energizing electric path between the arc stationary contactor and the main energizing contact portion. In a gas insulated switch having an arc contact portion provided with a coil for generating a magnetic field for rotating and extinguishing an arc generated at extreme times, the first arc movable contact is made of a metal having a low electric resistance, It is characterized in that a first arc movable contact piece made of arc-resistant metal is attached to its tip.
【００１６】[0016]
【作用】本発明のガス絶縁開閉器においては、アーク接
触部に設けられる第１アーク可動接触子を電気抵抗が低
い金属、例えばアルミニウムより構成し、さらに、その
先端部に耐弧金属から成る第１アーク可動接触子片を取
付けることにより、主通電接触部の解離時の電位差を大
幅に低減することができ、主通電接触部での発弧をほと
んどなくすことができるので、主通電接触部の損傷を最
小限に抑えることができる。In the gas-insulated switch of the present invention, the first movable arc contact provided in the arc contact portion is made of a metal having a low electric resistance, for example, aluminum, and the tip thereof is made of an arc resistant metal. 1 By attaching the movable arc contact piece, the potential difference at the time of dissociation of the main energizing contact part can be greatly reduced, and arcing at the main energizing contact part can be almost eliminated. Damage can be minimized.
【００１７】また、第１アーク可動接触子片は耐弧金属
で作られているため、第３アーク固定接触子との間に発
生する小アークによる損傷を最小限に抑えることがで
き、多数遮断による接触抵抗の上昇も抑えることができ
る。さらに、第１アーク可動接触子を重量が軽い金属で
構成したことにより、アーク可動接触部の軽量化が図
れ、駆動力を大幅に低減することができる。Also, since the first arc movable contact piece is made of arc-resistant metal, it is possible to minimize damage due to a small arc generated between the first arc movable contact piece and the third arc fixed contact piece, and to cut off a large number of pieces. It is also possible to suppress an increase in contact resistance due to. Further, since the first movable arc contact is made of a metal having a light weight, the movable arc contact portion can be reduced in weight and the driving force can be significantly reduced.
【００１８】[0018]
【実施例】以下、本発明の一実施例を図１乃至図４に基
づいて具体的に説明する。なお、図６に示した従来型と
同一の部材には同一の符号を付して、説明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS. The same members as those of the conventional type shown in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted.
【００１９】本実施例においては、図１に示した様に、
アーク接触部１２の一構成部材である第１アーク可動接
触子３０が電気抵抗が低い、例えばアルミニウムから構
成され、また、その先端部に耐弧金属より成る第１アー
ク可動接触子片３１が取付けられている。In this embodiment, as shown in FIG.
The first arc movable contactor 30, which is a component of the arc contact portion 12, is made of, for example, aluminum having a low electric resistance, and the first arc movable contactor piece 31 made of an arc-resistant metal is attached to the tip of the first arc movable contactor 30. Has been.
【００２０】なお、前記第１アーク可動接触子片３１
は、主通電可動接触子１６が主通電固定接触子１５と離
れる時に、第３アーク固定接触子１８と接触するように
構成されている。また、前記第１アーク可動接触子３０
及び第１アーク可動接触子片３１は、絶縁筒２３を介し
て第２アーク可動接触子２２と一体に構成されている。
その他の構成は図６に示した従来型と同様である。Incidentally, the first arc movable contact piece 31
Is configured to come into contact with the third arc fixed contact 18 when the main energization movable contact 16 separates from the main energization fixed contact 15. In addition, the first arc movable contact 30
The first arc movable contact piece 31 and the second arc movable contact element 22 are integrated with each other through the insulating cylinder 23.
Other configurations are similar to those of the conventional type shown in FIG.
【００２１】ここで、主通電可動接触子１６の内側に設
けられたアーク可動接触部の構成をより詳しく説明す
る。即ち、アーク可動接触部は、耐弧金属より成り、雌
大径ネジを有する第２アーク可動接触子２２と、この雌
大径ネジと契合する雄大径ネジおよび雌大径ネジを有す
る絶縁筒２３と、絶縁筒の雌大径ネジと契合する雄大径
ネジを有し耐弧金属から成る第１アーク可動接触子片３
１と、この第１アーク可動接触子片３１の雄大径ネジと
契合する雌大径ネジを有し、電気抵抗が低い例えばアル
ミニウムから成る第１アーク可動接触子３０より構成さ
れている。Now, the structure of the movable arc contact portion provided inside the main-current movable contact 16 will be described in more detail. That is, the arc movable contact portion is made of an arc-resistant metal and has a second arc movable contact 22 having a female large-diameter screw, and an insulating cylinder 23 having a male large-diameter screw and a female large-diameter screw engaging with the female large-diameter screw. And a first arc movable contact piece 3 made of arc-resistant metal having a male large-diameter screw engaging with the female large-diameter screw of the insulating cylinder.
1 and a female large-diameter screw that engages with the male large-diameter screw of the first arc movable contact piece 31 and has a low electric resistance, for example, a first arc movable contact 30 made of aluminum.
【００２２】また、前記第１アーク可動接触子３０は、
主通電可動接触子１６とそれらの基部において固着さ
れ、コイル２１は第１アーク可動接触子３０と第２アー
ク可動接触子２２とにわたって巻回され、さらに、第１
アーク可動接触子３０及び第１アーク可動接触子片３１
と第２アーク可動接触子２２との間は絶縁筒２３により
絶縁されている。Further, the first arc movable contact 30 is
The main current-carrying movable contact 16 and the bases thereof are fixed to each other, the coil 21 is wound around the first arc moving contact 30 and the second arc moving contact 22, and further, the first
Arc movable contact 30 and first arc movable contact piece 31
The second arc movable contact 22 and the second arc movable contact 22 are insulated by an insulating tube 23.
【００２３】この様な構成を有する本実施例のガス絶縁
開閉器は、以下に述べる様に作用する。即ち、図１に示
した投入状態にある断路部１０を開極するときには、図
示しない開閉機構の指令により、まず主通電可動接触子
１６が図示右方へ駆動されて主通電固定接触子１５と離
れる。この時、図２に示した様に、第３アーク固定接触
子１８は第１アーク可動接触子片３１と接触し始めた状
態で、ある程度の電気回路抵抗を有していることから、
この間に電位差が生じ、主通電接触部１１で発弧が生じ
る。The gas-insulated switch of this embodiment having such a structure operates as described below. That is, when opening the disconnecting portion 10 in the closed state shown in FIG. 1, the main energizing movable contact 16 is first driven to the right in the figure by the command of the opening / closing mechanism (not shown) to move the main energizing fixed contact 15 to the main energizing fixed contact 15. Leave. At this time, as shown in FIG. 2, the third arc fixed contact 18 has a certain degree of electric circuit resistance in the state where the third arc fixed contact 18 has started to contact the first arc moving contact piece 31,
During this time, a potential difference is generated, and the main energization contact portion 11 is ignited.
【００２４】しかし、この場合、前記第１アーク可動接
触子片３１を先端に設けた第１アーク可動接触子３０が
電気抵抗の低い金属、例えばアルミニウム等で作られて
いるため、電気回路抵抗が極めて低いことにより電位差
も小さくなり、主通電接触部１１での発弧がほとんどな
いか、またはきわめて軽微な程度に小さくすることがで
きる。その結果、主通電接触部に生じる損傷は最小限に
抑えられ、主通電部の機能には全く影響がないようにす
ることができる。なお、この状態では、前記第３アーク
固定接触子１８が第１アーク可動接触子片３１と接触し
ているので、コイル２１はまだ回路に挿入されていな
い。However, in this case, since the first arc movable contact 30 having the first arc movable contact piece 31 at the tip is made of a metal having a low electric resistance, such as aluminum, the electric circuit resistance is low. Since it is extremely low, the potential difference is also small, and there is almost no arcing at the main current contact portion 11, or it can be made extremely small. As a result, damage to the main energizing contact portion can be minimized, and the function of the main energizing portion can be completely prevented. In this state, the third arc stationary contact 18 is in contact with the first movable arc contact piece 31, so the coil 21 is not yet inserted in the circuit.
【００２５】次に、図２の状態からさらに主通電可動接
触子１６が図示右方向へ動くと、図３に示した様に、第
１アーク可動接触子片３１が第３アーク固定接触子１８
から離れて、第２アーク可動接触子２２が第３アーク固
定接触子１８に接触する状態になる。この時、電気回路
抵抗はさらに大きくなるが、主通電固定接触子１５と主
通電可動接触子１６の間には、すでに十分な絶縁距離が
確保されているため、主通電接触部１１で発弧は生じな
い。Next, when the main current-carrying movable contact 16 further moves from the state shown in FIG. 2 to the right in the figure, the first arc moving contact piece 31 moves the third arc fixed contact 18 as shown in FIG.
The second arc movable contact 22 comes into contact with the third arc fixed contact 18 away from. At this time, the electric circuit resistance further increases, but since a sufficient insulation distance has already been secured between the main energization fixed contact 15 and the main energization movable contact 16, the main energization contact portion 11 ignites. Does not occur.
【００２６】この過程で、第３アーク固定接触子１８と
第１アーク可動接触子片３１が離れるとき、これらの間
で第１の小アークＡ1 が発生するが、このアークＡ
1 は、第２アーク可動接触子２２が第３アーク固定接触
子１８に既に接触しているため瞬時に消減する。この小
アークＡ1 が消減することによって、コイル２１は断路
部１０の通電回路中に挿入されて磁界が発生する。In this process, when the third arc fixed contact piece 18 and the first arc moving contact piece 31 are separated from each other, the first small arc A 1 is generated between them.
In the case of 1 , the second movable arc contact 22 is already in contact with the third fixed arc contact 18, and is instantly consumed. When the small arc A 1 is extinguished, the coil 21 is inserted into the energizing circuit of the disconnecting section 10 and a magnetic field is generated.
【００２７】さらに、図３の状態から主通電可動接触子
１６が右方へ動くことにより、図４に示す様に、第２ア
ーク可動接触子２２が第３アーク固定接触子１８から離
れ、両接点間に第２の大アークＡ2 が生じる。しかし、
この大アークＡ2 はこれを直角に横切るコイル２１の磁
界Φによって高速回転駆動され、有効に冷却されるとと
もに、アークスポットが強引に移動させられて消弧す
る。Further, by moving the main energization movable contact 16 to the right from the state of FIG. 3, the second arc movable contact 22 is separated from the third arc fixed contact 18 as shown in FIG. A second large arc A 2 occurs between the contacts. But,
The large arc A 2 is rotationally driven at a high speed by the magnetic field Φ of the coil 21 that crosses the large arc A 2 at a high speed, is effectively cooled, and the arc spot is forcibly moved to extinguish the arc.
【００２８】この様に主通電接触部１１に発弧が生じる
のは、図２に示した様に主通電可動接触子１６が主通電
固定接触子１５より離れる時点であり、かつ、第１アー
ク可動接触子片３１が第３アーク固定接触子１８に接触
している時である。しかし、本実施例の様に、第１アー
ク可動接触子３０を電気抵抗が低い金属、例えばアルミ
ニウムより構成し、さらに、その先端部に耐弧金属から
成る第１アーク可動接触子片３１を取付けることによ
り、電位差が大幅に低減され、主通電接触部１１での発
弧をほとんどなくすことができるので、主通電接触部の
損傷を最小限に抑えることができる。The arcing occurs in the main energizing contact portion 11 in this manner when the main energizing movable contact 16 is separated from the main energizing fixed contact 15, as shown in FIG. 2, and the first arc is generated. This is when the movable contact piece 31 is in contact with the third arc fixed contact 18. However, as in the present embodiment, the first movable arc contact 30 is made of a metal having a low electric resistance, for example, aluminum, and the first movable arc contact piece 31 made of arc resistant metal is attached to the tip of the movable arc contact 30. As a result, the potential difference is significantly reduced, and the main energizing contact portion 11 can be hardly ignited, so that damage to the main energizing contact portion can be minimized.
【００２９】また、第１アーク可動接触子片３１は耐弧
金属で作られているため、第３アーク固定接触子１８と
の間に発生する小アークＡ1 による損傷を最小限に抑え
ることができ、多数遮断による接触抵抗の上昇も抑える
ことができる。さらに、第１アーク可動接触子３０を重
量が軽いアルミニウムで構成したことにより、アーク可
動接触部の軽量化が図れ、駆動力を大幅に低減すること
ができる。Further, since the first arc movable contact piece 31 is made of arc-resistant metal, it is possible to minimize damage caused by the small arc A 1 generated between the first arc movable contact piece 31 and the third arc fixed contact piece 18. It is also possible to suppress an increase in contact resistance due to a large number of cutoffs. Furthermore, since the first movable arc contact 30 is made of aluminum, which is light in weight, the movable arc contact portion can be made lighter, and the driving force can be significantly reduced.
【００３０】[0030]
【発明の効果】以上述べた通り、本発明によれば、アー
ク接触部の構成部材である第１アーク可動接触子を電気
抵抗が低い金属から構成し、その先端部に耐弧金属より
成る第１アーク可動接触子片を取付けることにより、磁
界形消弧方式による開閉器の開閉時に起こる主通電接触
部での発弧を抑え、主通電接触部が損傷しないように構
成すると共に、可動部重量を軽減し、駆動力を低減させ
たガス絶縁開閉器を提供することができる。As described above, according to the present invention, the first arc movable contact, which is a constituent member of the arc contact portion, is made of a metal having a low electric resistance, and the tip thereof is made of an arc resistant metal. 1 By attaching the movable arc contact piece, it is possible to suppress arcing at the main energizing contact part that occurs when the switch is opened and closed by the magnetic field type arc extinguishing method, and to prevent damage to the main energizing contact part. It is possible to provide a gas-insulated switch with reduced driving force and reduced driving force.
【図１】本発明のガス絶縁開閉器の一実施例を示す断面
図FIG. 1 is a sectional view showing an embodiment of a gas insulated switch according to the present invention.
【図２】図１に示した実施例の開極過程を示す断面図FIG. 2 is a sectional view showing a contact opening process of the embodiment shown in FIG.
【図３】図１に示した実施例の開極過程を示す断面図FIG. 3 is a sectional view showing a contact opening process of the embodiment shown in FIG.
【図４】図１に示した実施例の開極過程を示す断面図FIG. 4 is a sectional view showing a contact opening process of the embodiment shown in FIG.
【図５】本発明のガス絶縁開閉器が適用される系統図FIG. 5 is a system diagram to which the gas insulated switch of the present invention is applied.
【図６】従来のガス絶縁開閉器の構成を示す断面図FIG. 6 is a sectional view showing the structure of a conventional gas-insulated switch.
【図７】磁界形消弧方式開閉器の原理を示す図FIG. 7 is a diagram showing the principle of a magnetic field type arc-extinguishing switch.
【図８】磁界形消弧方式開閉器の原理を示す図FIG. 8 is a diagram showing the principle of a magnetic field type arc-extinguishing switch.
【図９】磁界形消弧方式開閉器の原理を示す図FIG. 9 is a diagram showing the principle of a magnetic field type arc-extinguishing switch.
１０…断路部 １１…主通電接触部 １２…アーク接触部 １３…固定接触部材 １４…板バネ １５…主通電固定接触子 １６…主通電可動接触子 １７…シールド １８…第３アーク固定接触子 １９…アーク固定接触子 ２０…第１アーク可動接触子 ２１…コイル ２２…第２アーク可動接触子 ２３…絶縁筒 ３０…第１アーク可動接触子 ３１…第１アーク可動接触子片 DESCRIPTION OF SYMBOLS 10 ... Disconnection part 11 ... Main energization contact part 12 ... Arc contact part 13 ... Fixed contact member 14 ... Leaf spring 15 ... Main energization fixed contactor 16 ... Main energization movable contactor 17 ... Shield 18 ... Third arc fixed contactor 19 ... Arc fixed contactor 20 ... First arc movable contactor 21 ... Coil 22 ... Second arc movable contactor 23 ... Insulating cylinder 30 ... First arc movable contactor 31 ... First arc movable contactor piece
Claims (1)
接触子と、これとの間で通電電路を開閉する主通電可動
接触子とから成る主通電接触部と、 前記固定接触部材に取付けられたアーク固定接触子と、
これとの間で通電電路を開閉する第１アーク可動接触子
及び第２アーク可動接触子とから構成され、前記主通電
接触部の開極時に発生するアークを回転消弧するための
磁界を発生させるコイルを設けたアーク接触部とを備え
たガス絶縁開閉器において、 前記第１アーク可動接触子を電気抵抗が低い金属から構
成し、その先端部に耐弧金属より成る第１アーク可動接
触子片を取付けたことを特徴とするガス絶縁開閉器。1. A main current-carrying contact portion comprising a main current-carrying fixed contactor attached to a fixed contact member and a main current-carrying movable contactor for opening and closing a current-carrying electric path between the main current-carrying fixed contact member and the main contact-carrying member. Fixed arc contactor,
A magnetic field for rotating and extinguishing an arc generated when the main current-carrying contact portion is opened is constituted by a first arc movable contactor and a second arc movable contactor which open and close the energizing electric path between them. A gas-insulated switch having an arc contact portion provided with a coil for causing the first arc movable contactor to be made of a metal having a low electric resistance, and a tip end portion of the first arc movable contactor made of an arc-resistant metal. A gas-insulated switch with a piece attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26567192A JPH06119851A (en) | 1992-10-05 | 1992-10-05 | Gas insulation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26567192A JPH06119851A (en) | 1992-10-05 | 1992-10-05 | Gas insulation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06119851A true JPH06119851A (en) | 1994-04-28 |
Family
ID=17420377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26567192A Pending JPH06119851A (en) | 1992-10-05 | 1992-10-05 | Gas insulation switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06119851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117180A (en) * | 2011-11-16 | 2013-05-22 | 施耐德电器工业公司 | Contact assembly and breaker comprising the same |
-
1992
- 1992-10-05 JP JP26567192A patent/JPH06119851A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117180A (en) * | 2011-11-16 | 2013-05-22 | 施耐德电器工业公司 | Contact assembly and breaker comprising the same |
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