JP2874917B2 - Puffer type gas circuit breaker - Google Patents
Puffer type gas circuit breakerInfo
- Publication number
- JP2874917B2 JP2874917B2 JP1303188A JP30318889A JP2874917B2 JP 2874917 B2 JP2874917 B2 JP 2874917B2 JP 1303188 A JP1303188 A JP 1303188A JP 30318889 A JP30318889 A JP 30318889A JP 2874917 B2 JP2874917 B2 JP 2874917B2
- Authority
- JP
- Japan
- Prior art keywords
- closing
- contact
- movable electrode
- main contact
- circuit breaker
- 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
Links
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、投入抵抗接点及び投入抵抗を有するパッフ
ァ形ガス遮断器に関するものである。The present invention relates to a puffer type gas circuit breaker having a closing resistance contact and a closing resistance.
(従来の技術) 近年、送電系統の大容量化に伴い、変電所や開閉所に
用いられる遮断器の遮断容量が増大し、且つ高い信頼性
が要求されている。この様な遮断器の信頼性を高めるた
めには、部品数を少なくし、構造を単純化することが重
要である。そのため、遮断器の遮断点数の減少が図られ
ている。例えば、現在550KV系統では遮断電流が50KAの
2点切り遮断機が実用化されているが、さらにこれを1
点切り化することが要求されている。(Prior Art) In recent years, as the capacity of power transmission systems has increased, the breaking capacity of circuit breakers used in substations and switchyards has increased, and high reliability has been required. In order to increase the reliability of such a circuit breaker, it is important to reduce the number of parts and simplify the structure. Therefore, the number of breaking points of the circuit breaker is reduced. For example, a two-point breaker with a breaking current of 50 KA is currently in practical use in the 550 KV system.
It is required to be pointed.
ところで、この様な大容量の遮断器を1点切り化する
場合に、消弧性能を向上させるには、従来の2点切りの
遮断器に比べてその開極速度を格段に早くする必要があ
る。そのため、固定電極とこれに対向配置した可動電極
を備え、開極時には可動電極のみを移動させていた従来
の遮断器に対して、対向する2つの電極を同時に反対方
向に移動させて開極する、いわゆるダブルモーションと
呼ばれる遮断器が提案されている。このダブルモーショ
ン方式の遮断器によれば、各電極の移動速度は従来の遮
断器と同様であるにもかかわらず、開極速度が格段に早
くなり、消弧性能が大幅に向上するといった利点があ
る。By the way, when such a large capacity circuit breaker is cut into one point, in order to improve the arc extinguishing performance, it is necessary to make the opening speed of the breaker much faster than that of the conventional two-point breaker. is there. Therefore, in contrast to the conventional circuit breaker, which has a fixed electrode and a movable electrode opposed to the fixed electrode and moves only the movable electrode at the time of opening, two opposed electrodes are simultaneously moved in opposite directions to open. A circuit breaker called a so-called double motion has been proposed. According to this double-motion circuit breaker, the opening speed is much faster and the arc-extinguishing performance is greatly improved, although the moving speed of each electrode is the same as that of the conventional circuit breaker. is there.
この様なダブルモーション方式の遮断器の一例を第6
図及び第7図に示した。図において、1は主接点用第1
可動電極、10は主接点用第2可動電極(従来の固定電極
に相当する)である。この主接点用第1可動電極1はパ
ッファシリンダ2の先端部に設けられ、その外周には絶
縁ノズル3、可動通電接触子4が同心円状に配置されて
いる。また、パッファシリンダ2の中心部には操作ロッ
ド5が固定され、この操作ロッド5が絶縁ロッド6を介
して図示しない操作機構部に接続されている。さらに、
パッファシリンダ2の内側には、絶縁筒7に支持固定さ
れたパッファピストン8が挿入され、このパッファピス
トン8と前記パッファシリンダ2に囲まれた空間がパッ
ファ室9となっている。An example of such a double-motion type circuit breaker is shown in FIG.
This is shown in FIG. 7 and FIG. In the figure, 1 is a first for a main contact.
The movable electrode 10 is a second movable electrode for a main contact (corresponding to a conventional fixed electrode). The first movable electrode 1 for a main contact is provided at the tip of a puffer cylinder 2, and an insulating nozzle 3 and a movable energizing contact 4 are concentrically arranged on the outer periphery thereof. An operation rod 5 is fixed to the center of the puffer cylinder 2, and the operation rod 5 is connected to an operation mechanism (not shown) via an insulating rod 6. further,
A puffer piston 8 supported and fixed to the insulating cylinder 7 is inserted inside the puffer cylinder 2, and a space surrounded by the puffer piston 8 and the puffer cylinder 2 is a puffer chamber 9.
一方、主接点用第2可動電極10は、通電円筒11におけ
る主接点用第1可動電極1との対向面中央に突出して設
けられ、前記絶縁ノズル3及び主接点用第1可動電極1
内に挿入されるように構成されている。また、主接点用
第2可動電極10の外周には、前記主接点用第1可動電極
の可動通電接触子4と接触する第2可動通電接触子12と
第2可動シールド13とが設けられている。これら主接点
用第2可動電極10を支持する通電円筒11は、その基部に
おいて通電用導体14に摺動自在に挿入されると同時に、
前記主接点用第1可動電極1の外側に配設された絶縁ロ
ッド15及びリンク機構16を介して、主接点用第1可動電
極1を駆動する操作ロッド5の基部に接続されている。
このリンク機構16は、リンク16aの両端にそれぞれ回動
自在に連結された第1、第2の連結棒16b,16c及びリン
ク16aを支持するリンク支持部16dより構成されている。
リンク16aは、所定のリンク比に設定されたリンク支持
部16dの支点16eを軸にして、リンク支持部16dに対して
回動自在に支持されている。また、第1、第2の各連結
棒16b,16cは、それぞれの一端にて操作ロッド5と絶縁
ロッド15に回動自在に連結されている。なお、リンク支
持部16dは、図示しない容器に絶縁固定された絶縁筒7
に固定されている。On the other hand, the second movable electrode 10 for the main contact is provided so as to protrude from the center of the energized cylinder 11 facing the first movable electrode 1 for the main contact, and is provided with the insulating nozzle 3 and the first movable electrode 1 for the main contact.
It is configured to be inserted into. On the outer periphery of the second movable electrode 10 for the main contact, a second movable energizing contact 12 and a second movable shield 13 that are in contact with the movable energizing contact 4 of the first movable electrode for the main contact are provided. I have. The current-carrying cylinder 11 supporting the main contact second movable electrode 10 is slidably inserted into the current-carrying conductor 14 at the base thereof,
It is connected to the base of the operating rod 5 for driving the first movable electrode 1 for main contacts via an insulating rod 15 and a link mechanism 16 provided outside the first movable electrode 1 for main contacts.
The link mechanism 16 includes first and second connecting rods 16b and 16c rotatably connected to both ends of a link 16a, and a link support 16d for supporting the link 16a.
The link 16a is rotatably supported by the link support 16d about a fulcrum 16e of the link support 16d set to a predetermined link ratio. Each of the first and second connecting rods 16b and 16c is rotatably connected to the operating rod 5 and the insulating rod 15 at one end thereof. The link support 16d is provided on an insulating tube 7 insulated and fixed to a container (not shown).
It is fixed to.
この様に構成されたダブルモーション方式の遮断器
は、第6図の投入状態において、図示しない操作機構部
を駆動すると、操作ロッド5が所定の速度で操作機構部
側(図中右側)に移動し、その先端に固定された主接点
用第1可動電極1が右方向に移動し、主接点用第2可動
電極10との間で遮断動作が行われる。一方、この操作ロ
ッド5の動作に伴って、これに連結されたリンク機構16
が駆動され、絶縁ロッド15を動作ロッド5とは反対側
(図中左側)に移動させる。その結果、この絶縁ロッド
15の先端に固定された通電円筒11及び主接点用第2可動
電極10が主接点用第1可動電極1とは反対方向(図中左
側)に移動する。また、前記操作ロッド5の移動によ
り、その先端に固定されたパッファシリンダ2が絶縁通
7に固定されたパッファピストン8に対して移動し、パ
ッファ室9が圧縮されるので、内部の消弧ガスが絶縁ノ
ズル3に案内されて、開離する主接点用第1、第2電極
間に吹付けられ、消弧動作がなされる。When the operating mechanism (not shown) is driven in the closed state shown in FIG. 6, the operating rod 5 moves to the operating mechanism side (the right side in the figure) at a predetermined speed. Then, the first movable electrode for main contact 1 fixed to the tip moves rightward, and a breaking operation is performed with the second movable electrode 10 for main contact. On the other hand, with the operation of the operation rod 5, the link mechanism 16 connected thereto is connected.
Is driven to move the insulating rod 15 to the opposite side (left side in the figure) from the operation rod 5. As a result, this insulating rod
The energization cylinder 11 and the second movable electrode 10 for the main contact, which are fixed to the tip of the 15, move in the opposite direction (left side in the figure) to the first movable electrode 1 for the main contact. Further, the movement of the operation rod 5 causes the puffer cylinder 2 fixed to the tip thereof to move with respect to the puffer piston 8 fixed to the insulating passage 7, and the puffer chamber 9 is compressed. Is guided by the insulating nozzle 3 and sprayed between the first and second electrodes for the main contact, which are separated from each other, and an arc extinguishing operation is performed.
なお、投入動作は、操作ロッド5を前記遮断動作とは
反対方向に駆動して、主接点用第1、第2可動電極1,10
を相対的に接近させることにより行われる。In the closing operation, the operating rod 5 is driven in the direction opposite to the blocking operation, and the first and second movable electrodes 1 and 10 for the main contact are driven.
Are relatively close to each other.
この様にダブルモーション方式の遮断器においては、
操作ロッド5の移動速度は従来の遮断器と同様なもので
ありながら、主接点用第1、第2可動電極1,10の両方を
反対方向に駆動するため、両電極間の相対的な開離速度
が2倍程度に向上し、大容量の遮断器においても1点切
りが可能となる。In this way, in a double-motion circuit breaker,
While the moving speed of the operating rod 5 is the same as that of the conventional circuit breaker, since both the first and second movable electrodes 1 and 10 for the main contact are driven in opposite directions, the relative opening between the two electrodes is increased. The separation speed is improved about twice, and even a large capacity circuit breaker can be cut at one point.
(発明が解決しようとする課題) ところで、550KV級のような大容量系統における線路
用の遮断器においては、投入時の投入過電圧を抑制する
ために投入抵抗方式が採用されている。これは、遮断器
の主接点と並列に投入抵抗を有する投入抵抗接点を設
け、投入時には主接点に先立ってこの投入抵抗接点が投
入され、その投入抵抗により投入過電圧が抑制された状
態で主接点が投入されるものである。この方式において
は、開極時に、まず投入抵抗接点が開離し、次いで主接
点が開極することが必要である。(Problems to be Solved by the Invention) Incidentally, in a circuit breaker for a line in a large-capacity system such as a 550 KV class, a closing resistance method is adopted in order to suppress a closing overvoltage at closing. In this method, a closing resistance contact having a closing resistance is provided in parallel with the main contact of the circuit breaker. Is input. In this method, at the time of opening, it is necessary that the closing resistance contact is first opened and then the main contact is opened.
この投入抵抗方式を前記ダブルモーション方式の遮断
器に採用する場合、開閉過電圧の抵抗、遮断器及びこれ
を採用したガス絶縁開閉装置全体の小型化が大きな問題
点となり、これを解決することが重要な課題である。When this closing resistance type is adopted for the double motion type circuit breaker, the switching overvoltage resistance, the size of the circuit breaker and the overall size of the gas insulated switchgear using the same become a serious problem, and it is important to solve this problem. Is an important task.
まず、第8図に、従来の550KV級2点切り遮断器の1
点当たりの投入接点と主接点の絶縁回復特性と、550KV
級1点切り遮断器の投入接点と主接点の絶縁回復特性を
示した。図から明らかな様に、550KV級1点切り遮断器
においては、 2点切りの各1点における場合より、主接点、投入抵
抗接点の両者共に開極速度が早い。First, Fig. 8 shows a conventional 550KV class double break circuit breaker.
Insulation recovery characteristics of closing contact and main contact per point and 550KV
The insulation recovery characteristics of the closing contact and the main contact of the class 1-point breaker were shown. As is clear from the figure, in the 550KV class single-break circuit breaker, the opening speed of both the main contact and the closing resistance contact is faster than in the case of two single-breakers.
開極時に、投入抵抗接点の絶縁回復速度が、主接点の
絶縁回復速度より早い。At the time of opening, the insulation recovery speed of the closing resistance contact is faster than the insulation recovery speed of the main contact.
投入時に、投入抵抗接点が主接点よりも先に投入され
る。At closing, the closing resistance contact is closed before the main contact.
という条件を満足する必要がある。It is necessary to satisfy the condition.
ところが、一方の電極のみを可動とした従来の遮断器
においては、可動電極と投入抵抗接点を同じ駆動源を用
いて同時に同速度で移動させていたため、両者の開極あ
るいは投入のタイミングは、電極形状の相違(主接点は
ワイプを使用した電極構造であるのに対し、投入抵抗接
点はスプリングを使用したバットコンタクトを採用)に
よって対応していた。However, in the conventional circuit breaker in which only one electrode is movable, the movable electrode and the closing resistance contact are simultaneously moved at the same speed by using the same driving source. The difference in shape (the main contact has an electrode structure using a wipe, whereas the closing resistance contact uses a butt contact using a spring) was used.
しかし、550KV級1点切り遮断器として採用されるダ
ブルモーション方式の遮断器では、主接点においては両
電極が同時に反対側に移動するので、従来の遮断器の様
に主接点の開極速度と同速度で投入抵抗接点を移動させ
ると、投入抵抗接点の投入速度あるいは開極速度が、主
接点の約1/2程度となり、前記,で述べた様に、投
入抵抗接点の投入速度あるいは開極速度を、主接点より
も早くすることができないという問題が生じる。しか
も、この種の大容量遮断器としては、その開極時に主接
点の電極間に消弧ガスを吹付けるパッファ形ガス遮断器
が採用されるのに対して、投入抵抗接点には特に消弧ガ
スの吹付けは行われないので、この理由からも投入抵抗
接点の絶縁回復速度を主接点よりも早くすることが困難
であった。However, in a double motion type circuit breaker, which is adopted as a 550KV class single-point breaker, both electrodes move to the opposite side at the same time at the main contact. When the closing resistance contact is moved at the same speed, the closing speed or opening speed of the closing resistance contact becomes about 1/2 of the main contact, and as described above, the closing speed or opening of the closing resistance contact. The problem arises that the speed cannot be made faster than the main contact. In addition, a puffer-type gas circuit breaker that blows an arc-extinguishing gas between the electrodes of the main contact when the electrode is opened is adopted as a large-capacity circuit breaker of this type, whereas a breaker gas is particularly applied to a closing resistance contact. For this reason, it is difficult to make the insulation recovery speed of the closing resistance contact faster than that of the main contact because no gas is blown.
本発明は、以上の欠点を解消するために提案されたも
ので、その目的は、機器の小型化を図り、また、投入時
の投入過電圧の低減と、開極あるいは投入時における投
入抵抗接点の絶縁回復速度の向上を可能とした、信頼性
の高いパッファ形ガス遮断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. The purpose of the present invention is to reduce the size of the device, to reduce the over-voltage at the time of closing, and to make the closing resistance contact at the time of opening or closing. An object of the present invention is to provide a highly reliable puffer-type gas circuit breaker capable of improving an insulation recovery speed.
[発明の構成] (課題を解決するための手段) 本発明のパッファ形ガス遮断器は、主接点の側部に投
入抵抗接点を設け、投入抵抗接点用第1可動電極をリン
ク機構を用いて主接点用第1可動電極と一体に動作する
ように構成し、また、投入抵抗接点用第2可動電極を、
主接点用第2可動電極側に設けられた支持部材に絶縁物
を介して取付け、投入抵抗接点の開閉動作が主接点の開
閉動作に先立って行われるように構成し、前記2つの投
入抵抗接点用電極の少なくともいずれか一方の背面側に
投入抵抗体を配設したことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) In a puffer type gas circuit breaker of the present invention, a closing resistance contact is provided on a side of a main contact, and a first movable electrode for the closing resistance contact is formed using a link mechanism. It is configured to operate integrally with the first movable electrode for the main contact, and the second movable electrode for the closing resistance contact is
The switching member is mounted on a support member provided on the second movable electrode side for the main contact via an insulator so that the opening and closing operation of the closing resistance contact is performed prior to the opening and closing operation of the main contact. A closing resistor is provided on at least one of the back surfaces of the electrodes for use.
(作用) 本発明のパッファ形ガス遮断器によれば、投入抵抗接
点の開閉速度を、そのリンク機構のリンク比を変えるこ
とによって、主接点の相対開閉速度に対して容易に調整
することができる。また、リンク比を適切に設定するこ
とによって、投入抵抗接点部の絶縁回復速度を、主接点
部の絶縁回復速度より早くすることができる。さらに、
投入抵抗接点用電極を主接点用電極の側部に配置し、投
入抵抗体を投入抵抗接点用電極の背面側に配置すること
によって、極めてコンパクトな構成とすることができ
る。(Operation) According to the puffer type gas circuit breaker of the present invention, the switching speed of the closing resistance contact can be easily adjusted with respect to the relative switching speed of the main contact by changing the link ratio of the link mechanism. . Further, by appropriately setting the link ratio, the insulation recovery speed of the closing resistance contact portion can be made faster than the insulation recovery speed of the main contact portion. further,
By arranging the closing resistor contact electrode on the side of the main contact electrode and arranging the closing resistor on the back side of the closing resistor contact electrode, an extremely compact configuration can be achieved.
(実施例) 以下、本発明の実施例を第1図乃至第3図に基づいて
具体的に説明する。なお、第6図及び第7図に示した従
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。(Example) Hereinafter, an example of the present invention will be specifically described with reference to FIGS. 1 to 3. The same members as those of the conventional type shown in FIGS. 6 and 7 are denoted by the same reference numerals, and description thereof will be omitted.
本実施例においては、第1図及び愛2図に示した様
に、投入抵抗接点用第1可動電極21が、リンク機構22を
介して、絶縁筒7に取付けられた支持部材23に連結され
ている。また、前記リンク機構22は、支持部材23に固定
されたリンク支持部22aと、ピン結合部22bを介して主接
点用第1可動電極1を駆動する操作ロッド5に連結さ
れ、前記リンク支持部22aを支点として、操作ロッド5
と連動して円弧運動を行う第1の連結棒22cと、この第
1の連結棒22cにピン結合された第2の連結棒22dにより
構成されている。In this embodiment, as shown in FIGS. 1 and 2, the first movable electrode 21 for the closing resistance contact is connected to a support member 23 attached to the insulating cylinder 7 via a link mechanism 22. ing. The link mechanism 22 is connected to a link support 22a fixed to a support member 23 and an operating rod 5 for driving the first movable electrode 1 for a main contact via a pin connector 22b. Operating rod 5 with 22a as a fulcrum
And a second connecting rod 22d which is pin-connected to the first connecting rod 22c and performs a circular motion in conjunction with the first connecting rod 22c.
一方、投入抵抗接点用第2可動電極24は、主接点用第
2可動電極10の通電用導体14を支持する支持部材25に絶
縁物26を介して取付けられたケース27内に摺動可能に支
持されている。なお、このケース27には、その先端部に
係止部27aが設けられ、前記投入抵抗接点用第2可動電
極24がバネ28によって第1可動電極側(図中右側)に付
勢されて収納されている。さらに、前記投入抵抗接点用
第2可動電極24の背面側に配設された絶縁物26内には、
投入抵抗体29が配設され、前記投入抵抗接点用第2可動
電極24と電気的に接続されている。On the other hand, the second movable electrode 24 for the closing resistance contact is slidable in a case 27 attached to a support member 25 supporting the conducting conductor 14 of the second movable electrode 10 for the main contact via an insulator 26. Supported. The case 27 is provided with a locking portion 27a at the tip end thereof, and the second movable electrode 24 for the closing resistance contact is urged toward the first movable electrode side (right side in the drawing) by a spring 28 to house the case. Have been. Further, in the insulator 26 disposed on the back side of the second movable electrode 24 for the closing resistance contact,
A closing resistor 29 is provided, and is electrically connected to the second movable electrode 24 for the closing resistor contact.
なお、第1図は遮断器の投入状態を、また、第2図は
遮断状態を示し、第3図は第1図のA−A矢視図を示し
ている。また、第1図及び第2図においては、主接点の
開閉動作を行うために配設される部材(例えば、第6図
におけるリンク機構16、絶縁ロッド15等)は省略してあ
る。FIG. 1 shows the closed state of the circuit breaker, FIG. 2 shows the closed state, and FIG. 3 shows a view taken along the line AA of FIG. 1 and 2, members (for example, the link mechanism 16, the insulating rod 15, etc. in FIG. 6) provided for opening and closing the main contact are omitted.
この様な構成を有する本実施例のパッファ形ガス遮断
器においては、以下に述べる様にして、主接点用電極及
び投入抵抗接点用電極が開閉される。即ち、第1図に示
した投入状態から遮断状態への移行は、主接点用第1可
動電極1と主接点用第2可動電極10の開離動作を行う操
作ロッド5の移動に伴って、それとピン結合部22bによ
って連結されたリンク機構22の第1の連結棒22cが遮断
側に回動する。この時、リンク機構22を構成する各連結
棒22c,22dのリンク比は、投入抵抗接点用電極21,24の方
が、主接点用電極1,10の遮断動作あるいは投入動作に先
立って動作することができるように設定されているの
で、まず、投入抵抗接点用第1可動電極21と投入抵抗接
点用第2可動電極24とが開き、その後、消弧室内の主接
点用第1可動電極1と主接点用第2可動電極10とが開離
する。一方、投入時においては、まず、投入抵抗接点用
第1可動電極21と投入抵抗接点用第2可動電極24とが投
入され、それに伴って投入抵抗体29がある時間、回路に
挿入され、その後、消弧室内の主接点用第1可動電極1
と主接点用第2可動電極10とが投入されると、投入抵抗
体29には電流が流れなくなる。In the puffer type gas circuit breaker of this embodiment having such a configuration, the electrode for the main contact and the electrode for the closing resistance contact are opened and closed as described below. That is, the transition from the closed state to the closed state shown in FIG. 1 is accompanied by the movement of the operating rod 5 for performing the opening operation of the first movable electrode 1 for the main contact and the second movable electrode 10 for the main contact. The first connecting rod 22c of the link mechanism 22, which is connected thereto by the pin connecting portion 22b, rotates to the blocking side. At this time, the link ratio of the connecting rods 22c and 22d constituting the link mechanism 22 is such that the closing resistance contact electrodes 21 and 24 operate prior to the closing operation or closing operation of the main contact electrodes 1 and 10. First, the first movable electrode 21 for the closing resistance contact and the second movable electrode 24 for the closing resistance contact open, and then the first movable electrode 1 for the main contact in the arc-extinguishing chamber. And the main contact second movable electrode 10 are separated. On the other hand, at the time of closing, first, the first movable electrode 21 for closing resistance contact and the second movable electrode 24 for closing resistance contact are closed, and accordingly, the closing resistor 29 is inserted into the circuit for a certain time. , First movable electrode 1 for main contact in arc-extinguishing chamber
When the second movable electrode 10 for main contact is turned on, no current flows through the closing resistor 29.
この様に、本実施例によれば、投入抵抗接点用電極の
方が、主接点用電極の遮断動作あるいは投入動作に先立
って動作することができ、また、投入抵抗接点部の絶縁
回復速度を、主接点部の絶縁回復速度より早くすること
ができる。さらに、投入抵抗接点用電極を主接点用電極
の側部に配置し、投入抵抗体を投入抵抗接点用第2可動
電極の背面側に配置することによって、極めてコンパク
トな構成とすることができる。As described above, according to the present embodiment, the closing resistance contact electrode can operate before the main contact electrode interrupting operation or closing operation, and the insulation recovery speed of the closing resistance contact portion can be reduced. In addition, the insulation recovery speed of the main contact portion can be made faster. Further, by arranging the closing resistance contact electrode on the side of the main contact electrode and arranging the closing resistor on the back side of the second resistance electrode for the closing resistance contact, an extremely compact configuration can be achieved.
なお、本発明は上述した実施例に限定されるものでは
なく、投入抵抗体は投入抵抗接点用第1可動電極21の背
面側に配設しても良く、また、第4図及び第5図に示し
た様に、投入抵抗体29,30をそれぞれ投入抵抗接点用第
2可動電極24と投入抵抗接点用第1可動電極21の背面側
に配設しても良い。この場合、リンク機構22を構成する
第2の連結棒22dは絶縁物で構成され、また、支持部材2
3に絶縁物31を介して摺動通電部32が配設され、この摺
動通電部32内を投入抵抗接点用第1可動電極21の操作ロ
ッドが摺動するように構成されている。さらに、投入抵
抗体30は前記絶縁物31内に収納されている。この場合
も、上記の実施例と同様の効果が得られると共に、投入
抵抗体を2つに分けて配置したため、パッファ形ガス遮
断器の空間を有効に利用することができる。The present invention is not limited to the embodiment described above, and the closing resistor may be disposed on the back side of the first movable electrode 21 for the closing resistance contact. As shown in the above, the closing resistors 29 and 30 may be disposed on the back side of the second movable electrode 24 for closing resistance contact and the first movable electrode 21 for closing resistance contact, respectively. In this case, the second connecting rod 22d that constitutes the link mechanism 22 is made of an insulating material.
A sliding energizing portion 32 is disposed on the insulating material 31 via an insulator 31, and the operating rod of the first movable electrode 21 for the closing resistance contact slides in the sliding energizing portion 32. Further, the closing resistor 30 is housed in the insulator 31. Also in this case, the same effect as in the above embodiment can be obtained, and the space of the puffer type gas circuit breaker can be effectively used because the closing resistor is divided into two parts.
[発明の効果] 以上述べた様に、本発明によれば、主接点の側部に投
入抵抗接点を設け、投入抵抗接点用第1可動電極をリン
ク機構を用いて主接点用第1可動電極と一体に動作する
ように構成し、また、投入抵抗接点用第2可動電極を、
主接点用第2可動電極側に設けられた支持部材に絶縁物
を介して取付け、投入抵抗接点の開閉動作が主接点の開
閉動作に先立って行われるように構成し、前記2つの投
入抵抗接点用電極の少なくともいずれか一方の背面側に
投入抵抗体を配設することによって、機器の小型化を図
り、また、投入時の投入過電圧の低減と、開極あるいは
投入時における投入抵抗接点の絶縁回復速度の向上を可
能とした、信頼性の高いパッファ形ガス遮断器を提供す
ることができる。[Effects of the Invention] As described above, according to the present invention, the closing resistance contact is provided on the side of the main contact, and the first movable electrode for the closing contact is used as the first movable electrode for the main contact using a link mechanism. And a second movable electrode for a closing resistance contact,
The switching member is mounted on a support member provided on the second movable electrode side for the main contact via an insulator so that the opening and closing operation of the closing resistance contact is performed prior to the opening and closing operation of the main contact. By disposing a closing resistor on at least one of the back sides of the electrodes, the size of the equipment can be reduced, the overvoltage at closing can be reduced, and the closing resistance contact at opening or closing can be isolated. A highly reliable puffer-type gas circuit breaker capable of improving the recovery speed can be provided.
第1図及び第2図は本発明のパッファ形ガス遮断器の一
実施例を示す断面図であり、第1図は遮断器の投入状
態、第2図は遮断状態を示し、第3図は第1図のA−A
矢視図、第4図及び第5図は本発明の他の実施例を示す
断面図であり、第4図は遮断器の投入状態、第5図は遮
断状態を示し、第6図及び第7図は従来から用いられて
いるダブルモーション方式のパッファ形ガス遮断器の一
例を示す断面図であり、第6図は遮断器の投入状態、第
7図は遮断状態を示し、第8図は主接点と投入抵抗接点
の絶縁回復特性を示す図である。 1…主接点用第1可動電極、2…パッファシリンダ、3
…絶縁ノズル、4…可動通電接触子、5…操作ロッド、
6…絶縁ロッド、7…絶縁筒、8…パッファピストン、
9…パッファ室、10…主接点用第2可動電極、11…通電
円筒、12…第2可動通電接触子、13…第2可動シール
ド、14…通電用導体、15…絶縁ロッド、16…リンク機
構、16a…リンク、16b,16c…連結棒、16d…リンク支持
部、16e…支点、21…投入抵抗接点用第1可動電極、22
…リンク機構、22a…リンク支持部、22b…ピン結合部、
22c…第1の連結棒、22d…第2の連結棒、23…支持部
材、24…投入抵抗接点用第2可動電極、25…支持部材、
26…絶縁物、27…ケース、27a…係止部、28…バネ、29
…投入抵抗体、30…投入抵抗体、31…絶縁物、32…摺動
通電部。1 and 2 are cross-sectional views showing an embodiment of a puffer type gas circuit breaker according to the present invention. FIG. 1 shows a closed state of the circuit breaker, FIG. 2 shows a closed state, and FIG. AA in FIG.
4 and 5 are sectional views showing another embodiment of the present invention. FIG. 4 shows a closed state of a circuit breaker, FIG. 5 shows a closed state, and FIGS. FIG. 7 is a cross-sectional view showing an example of a conventionally used double-motion type puffer-type gas circuit breaker. FIG. 6 shows a closed state of the circuit breaker, FIG. 7 shows a closed state, and FIG. It is a figure showing the insulation recovery characteristic of a main contact and a closing resistance contact. DESCRIPTION OF SYMBOLS 1 ... 1st movable electrode for main contacts, 2 ... Puffer cylinder, 3
... Insulating nozzle, 4 ... Movable contact, 5 ... Operation rod,
6: insulating rod, 7: insulating cylinder, 8: puffer piston,
9: Puffer chamber, 10: Second movable electrode for main contact, 11: Energized cylinder, 12: Second movable energized contact, 13: Second movable shield, 14: Conductor, 15: Insulated rod, 16: Link Mechanism, 16a: link, 16b, 16c: connecting rod, 16d: link support, 16e: fulcrum, 21: first movable electrode for closing resistance contact, 22
... Link mechanism, 22a ... Link support part, 22b ... Pin connection part,
22c: first connecting rod, 22d: second connecting rod, 23: supporting member, 24: second movable electrode for closing resistance contact, 25: supporting member,
26 ... insulator, 27 ... case, 27a ... locking part, 28 ... spring, 29
... closing resistor, 30 ... closing resistor, 31 ... insulator, 32 ... sliding energizing part.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−84526(JP,A) 特公 昭56−26926(JP,B2) (58)調査した分野(Int.Cl.6,DB名) H01H 33/70 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-84526 (JP, A) JP-B-56-26926 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) H01H 33/70
Claims (1)
な主接点用第1可動電極と第2可動電極を対向配置して
なる主接点が収納されたダブルモーション方式のパッフ
ァ形ガス遮断器において、 前記主接点の側部に投入抵抗接点が設けられ、この投入
抵抗接点用第1可動電極が、リンク機構を介して前記容
器に固定された支持部材に連結され、また、前記リンク
機構が、前記主接点用第1可動電極を駆動する操作ロッ
ドに連結されて、操作ロッドと連動するように構成さ
れ、 一方、投入抵抗接点用第2可動電極が、主接点用第2可
動電極側に設けられた支持部材に絶縁物を介して取付け
られ、 前記投入抵抗接点の開閉動作が主接点の開閉動作に先立
って行われるように構成され、 前記投入抵抗接点用第1可動電極または投入抵抗接点用
第2可動電極の少なくともいずれか一方の背面側に投入
抵抗体が配設され、この投入抵抗体がそれが配設された
側の投入抵抗接点用電極と電気的に接続されていること
を特徴とするパッファ形ガス遮断器。1. A double-motion type puffer type in which a main contact formed by opposing a first movable electrode and a second movable electrode for a main contact which can be freely contacted and separated is accommodated in a container filled with an arc-extinguishing gas. In the gas circuit breaker, a closing resistance contact is provided on a side of the main contact, and the first movable electrode for the closing resistance contact is connected to a support member fixed to the container via a link mechanism, and A link mechanism is connected to an operating rod for driving the first movable electrode for the main contact, and is configured to interlock with the operating rod. On the other hand, the second movable electrode for the closing resistance contact is connected to the second movable electrode for the main contact. A first movable electrode for the closing resistance contact, which is attached to a supporting member provided on the electrode side via an insulator, and wherein the opening and closing operation of the closing resistance contact is performed prior to the opening and closing operation of the main contact; Second for closing resistance contact A closing resistor is disposed on at least one back side of the movable electrode, and the closing resistor is electrically connected to the closing resistor contact electrode on the side where the closing resistor is provided. Puffer type gas circuit breaker.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1303188A JP2874917B2 (en) | 1989-11-24 | 1989-11-24 | Puffer type gas circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1303188A JP2874917B2 (en) | 1989-11-24 | 1989-11-24 | Puffer type gas circuit breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03165413A JPH03165413A (en) | 1991-07-17 |
JP2874917B2 true JP2874917B2 (en) | 1999-03-24 |
Family
ID=17917942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1303188A Expired - Lifetime JP2874917B2 (en) | 1989-11-24 | 1989-11-24 | Puffer type gas circuit breaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2874917B2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5626926A (en) * | 1979-08-10 | 1981-03-16 | Toshiba Corp | Epoxy resin molding material for sealing electronic part |
JPS5784526A (en) * | 1980-11-14 | 1982-05-26 | Hitachi Ltd | Resistance breakage type breaker |
-
1989
- 1989-11-24 JP JP1303188A patent/JP2874917B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03165413A (en) | 1991-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5905242A (en) | High voltage hybrid circuit-breaker | |
US5750949A (en) | Metal-encapsulated, gas-insulated high-voltage circuit-breaker | |
CA1065935A (en) | Double-puffer-type compressed-gas circuit-interrupter constructions | |
JP2874917B2 (en) | Puffer type gas circuit breaker | |
JP2859358B2 (en) | Puffer type gas circuit breaker with closing resistance contact | |
JP2868794B2 (en) | Puffer type gas circuit breaker | |
JP2609652B2 (en) | Puffer type gas circuit breaker | |
JP2866428B2 (en) | Puffer type gas circuit breaker | |
JP2653502B2 (en) | Gas circuit breaker | |
JP3357682B2 (en) | Puffer type gas circuit breaker with closing resistance | |
JP2633643B2 (en) | Three-phase batch gas circuit breaker | |
JP2633644B2 (en) | Puffer type gas circuit breaker | |
JP2859357B2 (en) | Puffer type gas circuit breaker with closing resistor | |
JPH05314873A (en) | Puffer gas circuit breaker equipped with closing resistance | |
US4249049A (en) | High voltage plain break circuit interrupter | |
JPH0743987B2 (en) | Puffer type gas circuit breaker | |
JP2523478B2 (en) | Puffer type gas breaker | |
JP2670375B2 (en) | Puffer type gas circuit breaker | |
JP2708158B2 (en) | Puffer type gas circuit breaker | |
JPH0473834A (en) | Puffer type gas-blast circuit-breaker with closing resistance | |
JPH0743986B2 (en) | Puffer type gas circuit breaker | |
JPH01248423A (en) | Buffer type gas-blasted circuit breaker | |
JPH02297826A (en) | Buffer type gas-blast circuit-breaker with closing resistance contact | |
JPH11250785A (en) | Puffer type gas-blast circuit breaker with closing resistance | |
JPH0736309B2 (en) | Puffer type gas circuit breaker |