JPH03182028A - Circuit breaker - Google Patents
Circuit breakerInfo
- Publication number
- JPH03182028A JPH03182028A JP31875289A JP31875289A JPH03182028A JP H03182028 A JPH03182028 A JP H03182028A JP 31875289 A JP31875289 A JP 31875289A JP 31875289 A JP31875289 A JP 31875289A JP H03182028 A JPH03182028 A JP H03182028A
- Authority
- JP
- Japan
- Prior art keywords
- current
- contact
- limiting
- contact base
- base
- 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
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000000670 limiting effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は回路遮断器に係り、特に電磁反発機構を有する
限流形遮断器の接点台の開極スピードを高め開極距離を
増加して限流性能を向上させるのに好適な回路遮断器に
関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a circuit breaker, and in particular to a current limiting circuit breaker having an electromagnetic repulsion mechanism, by increasing the opening speed and increasing the opening distance of a contact block. The present invention relates to a circuit breaker suitable for improving current limiting performance.
限流遮断器は、短絡時のような大きな事故電流をそのま
ま処理しないで小さな値に制限して遮断する装置で、遮
断器自体が高遮断容量化されるのみならず、通過電流波
高値を大幅に制限することができ、短時間遮断となるた
め、回路機器や電線などに与える電磁的、熱的衝撃を軽
減できる長所を有するものである。従来のこの種の装置
としては、例えば実開昭５２−４５１６４号公報に開示
のものがあるが、可動接点台と限流接点台に電磁反発力
を生じさせるための導体間寸法を小さくすることができ
ず、また長さも制限されていた。また、実公昭５５−８
８３５号公報に開示された考案は、１組の電磁反発機構
を備えるものである。A current-limiting circuit breaker is a device that limits large fault currents such as those caused by short circuits to a small value and interrupts them without directly processing them.Not only does the circuit breaker itself have a high breaking capacity, but it also greatly reduces the peak value of the passing current. It has the advantage of being able to reduce the electromagnetic and thermal shock that is applied to circuit equipment, electric wires, etc., since it can be limited to a short period of time and is shut off for a short time. As a conventional device of this type, there is one disclosed in Japanese Utility Model Application Publication No. 52-45164, for example, but it is necessary to reduce the dimension between the conductors in order to generate electromagnetic repulsion between the movable contact block and the current-limiting contact block. It was not possible to do so, and the length was also limited. Also, Jikko Sho 55-8
The device disclosed in Japanese Patent No. 835 includes a set of electromagnetic repulsion mechanisms.
［発明が解決しようとする課′ｄ１］
上記従来技術は、電磁反発力に関しては十分とはいえず
、さらに性能の向上が望まれている。[Problem to be Solved by the Invention 'd1] The above-mentioned conventional technology is not sufficient in terms of electromagnetic repulsion, and further improvement in performance is desired.
本発明は、上記の課題に鑑み開極スピードの一層の向上
と、開極距離が長く限流性能が優れた電磁反発機構を備
える回路遮断器を提供することを目的としている。In view of the above-mentioned problems, an object of the present invention is to provide a circuit breaker equipped with an electromagnetic repulsion mechanism that further improves the opening speed, has a long opening distance, and has excellent current limiting performance.
〔課題を解決するための手段〕
上記目的は、限流接点台の回動中心の両側に生ずる電磁
反発力を偶力として前記限流接点台を回動する電磁反発
機構を少なくとも２組備えた回路遮断器によって達成さ
れる。[Means for Solving the Problems] The above object is provided with at least two sets of electromagnetic repulsion mechanisms that rotate the current-limiting contact base using electromagnetic repulsion forces generated on both sides of the center of rotation of the current-limiting contact base as a couple. Accomplished by a circuit breaker.
〔作用］
上記の構成において、遮断時に短絡電流が流れると、第
１限流接点台および第２限流接点台には、回転中心に対
して偶力として働く電磁反発力が生じ、回路遮断器を開
局させるための電磁反発機構を２個所に設けることがで
き、これにより限流接点台を開極するスピードが増加す
ると共に、アーク電圧が上昇し限流効果を大幅に高める
。[Function] In the above configuration, when a short-circuit current flows during interruption, an electromagnetic repulsive force is generated in the first current-limiting contact block and the second current-limiting contact block, which acts as a couple with respect to the center of rotation, and the circuit breaker Electromagnetic repulsion mechanisms for opening can be provided at two locations, which increases the opening speed of the current limiting contact block and increases the arc voltage, greatly enhancing the current limiting effect.
［実施例］
以下、本発明の一実施例を第１図〜第３図により説明す
る。[Example] An example of the present invention will be described below with reference to FIGS. 1 to 3.
第１図は本発明に係る回路遮断器の一実施例でＯＮ状態
を示す側断面図、第２図は遮断動作過程を示す要部正面
図、第３図は遮断完了後を示す要部正面図である。第１
図において、０Ｎ−ＯＦＦ操作は、モールドカバ−２上
面から突出している操作ハンドル３を″○Ｎ″′方向ま
たは”ＯＦＦ″′方向への開閉操作により可動接点台を
移動させて行う操作ハンドル３を電源側に移動させるこ
とにより、トグルリンク機構を有する開閉機構４の２節
リンクが働き、開閉機構部４の一端に位置し、３極分一
体の可動接点台９を支持する連動軸７が回動する。この
連動軸７の反時計方向への回動により、可動接点台９は
、ビン１６を回動中心として全体が移動し、これにより
可動接点台９の一端に位置する可動接点１０が、これと
当接する限流接点１１の位置まで移動するように、限流
接点１１を一端に持つ限流接点台９に対向する方向で開
閉機摺部４の下部に配置する。Fig. 1 is a side cross-sectional view showing an embodiment of the circuit breaker according to the present invention in the ON state, Fig. 2 is a front view of the main part showing the breaking operation process, and Fig. 3 is a front view of the main part showing the circuit breaker after completion of breaking. It is a diagram. 1st
In the figure, the 0N-OFF operation is performed by moving the movable contact block by opening and closing the operating handle 3 protruding from the top surface of the mold cover 2 in the "○N" direction or the "OFF" direction. By moving the switch to the power source side, the two-bar link of the opening/closing mechanism 4 having a toggle link mechanism works, and the interlocking shaft 7, which is located at one end of the opening/closing mechanism section 4 and supports the movable contact block 9 with three poles, is activated. Rotate. As a result of this counterclockwise rotation of the interlocking shaft 7, the entire movable contact base 9 moves around the bin 16, and as a result, the movable contact 10 located at one end of the movable contact base 9 moves away from the movable contact base 9. It is arranged at the lower part of the switchgear sliding part 4 in a direction facing the current-limiting contact base 9 having the current-limiting contact 11 at one end so as to move to the position of the current-limiting contact 11 that comes into contact with it.
第１限流接点台１２は回動中心をビン１７によって支持
され、ビン１７には第１限流接点台１２を時計方向に付
勢する戻しバネ１３を備える。戻しバネ１３の一端はモ
ールドケース１に係止され、他端は第１限流接点台１２
の回動中心となるビン１７と反対側１２ａに係着する。The rotation center of the first current-limiting contact base 12 is supported by a pin 17, and the pin 17 is provided with a return spring 13 that biases the first current-limiting contact base 12 clockwise. One end of the return spring 13 is locked to the molded case 1, and the other end is locked to the first current-limiting contact block 12.
It is engaged with the opposite side 12a of the bottle 17, which is the center of rotation.
この第１限流接点台１２ａ部の一端には可とう撚線１４
が接続され、その延長は第２接点台２３の一端に接続さ
れている。A flexible twisted wire 14 is attached to one end of the first current-limiting contact block 12a.
is connected, and its extension is connected to one end of the second contact base 23.
第２接点台２３の他端には固定接点２４が配置され、固
定接点２４と当接するように、ビン２１に支持された第
２限流接点台２２に可動接点２５が配置されている。ビ
ン２１には第２限流接点台２２を反時計方向に付勢する
バネ２６を備える。A fixed contact 24 is arranged at the other end of the second contact stand 23, and a movable contact 25 is arranged on the second current-limiting contact stand 22 supported by the bottle 21 so as to be in contact with the fixed contact 24. The bottle 21 is provided with a spring 26 that biases the second current-limiting contact base 22 in a counterclockwise direction.
ビン２１に関して、第２限流接点台２２の可動接点２５
と反対側端には、可とう撚線１４が接続され、その延長
は第１接点台１５の一端に接続されている。第１限流接
点台１２は、ビン１７を中心として回動可能で、可動接
点台９と第１限流接点台１２、第２限流接点台２２と第
１接点台１５は、それぞれ電磁力により反発する方向す
なわち偶力方向に回動するように配置構成されている。Regarding the bottle 21, the movable contact 25 of the second current-limiting contact base 22
A flexible stranded wire 14 is connected to the opposite end thereof, and its extension is connected to one end of the first contact base 15. The first current-limiting contact base 12 is rotatable around the bin 17, and the movable contact base 9 and the first current-limiting contact base 12, and the second current-limiting contact base 22 and the first contact base 15 each have an electromagnetic force. It is arranged and configured to rotate in the direction of repulsion, that is, in the direction of the couple.
また、第２限流接点台２２は、ビン２１を中心として回
動可能で、第１接点台１５と第２限流接点台２２、第２
接点台２３と第２限流接点台２２は、それぞれ電磁力に
より同様に偶力方向に回動するように構成されている。Further, the second current-limiting contact base 22 is rotatable around the bin 21, and the first contact base 15, the second current-limiting contact base 22, and the second
The contact base 23 and the second current-limiting contact base 22 are each configured to similarly rotate in the couple direction by electromagnetic force.
過電流の検出には、オイルダッシュポット部５を有しプ
ランジャーの上昇により吸引された可動鉄片１９が機構
部分をトリップ動作させるようにする。To detect overcurrent, the movable iron piece 19, which has an oil dashpot portion 5 and is attracted by the rise of the plunger, causes a mechanism portion to trip.
第２図の動作過程図に示すように、短絡事故により、第
１接点台１５を経由して大電流が遮断器内に流れた場合
、上述のように、対向して設けた第１接点台１５と第１
限流接点台１２の端部１２ａとの間と、第１限流接点台
１２の回動中心となるビン１７の反対側に位置する接点
部の第１限流接点台１２ｂ部と可動接点台９との間の２
箇所で短絡電流による電磁反発力が生まれ、これにより
、第１限流接点台１２はビン１７を回動中心として反時
計方向に回動し高速開離される。また、第１接点台１５
と第２限流接点台２２の対向する端部２２ｂとの間、お
よび、第２限流接点台２２の回動中心に関し、端部２２
ｂと反対側の端部２２ａと第２接点台２３の固定接点側
との間の２箇所で、電磁反発力が生まれ、第２限流接点
台２２はビン２１を回動中心とし時計方向に高速開離さ
れる。遮断動作が完了すると、第１限流接点台１２、第
２限流接点台２２は、バネ１３．２１により元の位置に
復帰し、開閉機構が働いて第３図の状態になる。As shown in the operation process diagram of FIG. 2, when a large current flows into the circuit breaker via the first contact block 15 due to a short circuit accident, as described above, the first contact block provided oppositely 15 and 1st
The first current-limiting contact base 12b of the contact portion located between the end portion 12a of the current-limiting contact base 12 and the opposite side of the bin 17, which is the center of rotation of the first current-limiting contact base 12, and the movable contact base. 2 between 9
An electromagnetic repulsive force is generated by the short-circuit current at the location, and as a result, the first current-limiting contact block 12 rotates counterclockwise about the pin 17 and opens at high speed. In addition, the first contact base 15
and the opposite end 22b of the second current-limiting contact base 22, and regarding the center of rotation of the second current-limiting contact base 22, the end 22
An electromagnetic repulsive force is generated between the end 22a on the opposite side of b and the fixed contact side of the second contact block 23, and the second current-limiting contact block 22 rotates clockwise around the bottle 21. Released at high speed. When the interrupting operation is completed, the first current-limiting contact block 12 and the second current-limiting contact block 22 are returned to their original positions by the springs 13, 21, and the opening/closing mechanism is activated to enter the state shown in FIG. 3.
この実施例によると、限流接点台の開極スピードを大幅
に向上するとともに、２つの限流接点台により更にアー
ク電圧は２倍となるため、大幅な限流性能の向上が図ら
れる。According to this embodiment, the opening speed of the current-limiting contact block is greatly improved, and the arc voltage is further doubled by the two current-limiting contact blocks, so that the current-limiting performance is greatly improved.
その他の実施例を第４．５図に示す。第４図は本発明の
他の実施例の遮断動作過程を示す要部正面図、第５図は
他の実施例の遮断完了後を示す要部正面図であって、第
１図〜第３図と同一の符号を有するものは同一機能部品
である。第４図において、第２限流接点台２２に働く電
磁反発力を、ビン２１の反対側の第２接点台１８に対向
する部分の一方向のみとしている。第１接点台１５と第
２接点台１８とは互いに直接連結されている点が第１図
〜第３図実施例と異なる。電磁反発力は、第１限流接点
台１２と第１接点台１５、および第２接点台１８と第２
限流接点台２２との間の２個所に作用して回路遮断器を
開局させ、第１図〜第３図実施例と同等の機能を示すも
のである。遮断が完了した状態は第５図に示されている
。Another embodiment is shown in Figure 4.5. FIG. 4 is a front view of the main part showing the shutoff operation process of another embodiment of the present invention, and FIG. 5 is a front view of the main part showing the other embodiment after the cutoff is completed. Components having the same reference numerals as those in the drawings are the same functional parts. In FIG. 4, the electromagnetic repulsive force acting on the second current-limiting contact base 22 is limited to one direction on the portion facing the second contact base 18 on the opposite side of the bottle 21. This embodiment differs from the embodiments of FIGS. 1 to 3 in that the first contact base 15 and the second contact base 18 are directly connected to each other. The electromagnetic repulsive force is generated between the first current-limiting contact base 12 and the first contact base 15, and between the second contact base 18 and the second contact base 15.
The circuit breaker is actuated at two locations between the current limiting contact block 22 and the circuit breaker is opened, and the function is equivalent to that of the embodiment shown in FIGS. 1 to 3. The state in which the cut-off is completed is shown in FIG.
上記の通り本発明は、偶力による電磁反発構造を複数組
採用したことと、限流接点台の接点と反対側端を可どう
ｍＰＡにより接続し、限流接点台の回動中心の両側には
接点が設けられていないから、導体間寸法を小さくする
ことができ、しかも限流接点台の電磁反発動作を妨げる
ことなく、２倍以上のアーク電圧が得られ、限流接点台
の開極スピードが大幅に向上するという優れた遮断性能
に加えて、コンパクトな回路遮断器を提供することがで
きる。As mentioned above, the present invention employs a plurality of pairs of electromagnetic repulsion structures using couple forces, and connects the contacts and the opposite end of the current-limiting contact block by a flexible mPA, and connects the contacts on both sides of the rotation center of the current-limiting contact block. Since no contacts are provided, the distance between the conductors can be reduced, and more than twice the arc voltage can be obtained without interfering with the electromagnetic repulsion operation of the current-limiting contact block. In addition to superior breaking performance with significantly increased speed, a compact circuit breaker can be provided.
本発明の回路遮断器の使用により、遮断時における接点
台の開極速度が高められ、複数個所に設けた電磁反発機
構により開極距離を長くし、かつ、アーク電圧を高める
ことができ、限流性能の飛耀的向上が図られるなどの顕
著な効果を奏するものである。By using the circuit breaker of the present invention, the opening speed of the contact block at the time of interruption is increased, and the electromagnetic repulsion mechanism provided at multiple locations increases the opening distance and increases the arc voltage. This has remarkable effects such as a dramatic improvement in flow performance.
第１図は本発明に係る回路遮断器の一実施例でＯＮ状態
における側断面図、第２図は第１図実施例の遮断動作過
程を示す要部正面図、第３図は第２図の遮断完了後を示
す要部正面図、第４図は本発明の他の実施例の遮断動作
過程を示す要部正面図、第５図は第４図実施例の遮断完
了後を示す要部正面図である。Fig. 1 is a side sectional view of an embodiment of the circuit breaker according to the present invention in the ON state, Fig. 2 is a front view of main parts showing the breaking operation process of the embodiment shown in Fig. 1, and Fig. 3 is the same as Fig. 2. FIG. 4 is a front view of the main part showing the shutoff operation process of another embodiment of the present invention, and FIG. 5 is a front view of the main part showing after the cutoff of the embodiment shown in FIG. It is a front view.
Claims (1)
電流による電磁反発機構を有する回路遮断器において、
限流接点台の回動中心の両側に生ずる電磁反発力を偶力
として前記限流接点台を回動する電磁反発機構を少なく
とも２組備えていることを特徴とする回路遮断器。 ２、前記電磁反発機構は、 可動接点台と、該可動接点台と当接する接点を有する第
１限流接点台と、該第１限流接点台の回動中心に関して
前記接点の反対側端と対向する端部を有する第１接点台
と、前記回動中心の両側に生ずる電磁反発力を偶力とし
て第１限流接点台を回動する第１の電磁反発機構と、第
２限流接点台と、該第２限流接点台と当接する接点を有
する第２接点台と、前記第２限流接点台の回動中心に関
して接点の反対側端が前記第１接点台の前記端部と対向
する第２接点台と、該第２限流接点台の回動中心の両側
に生ずる電磁反発力を偶力として回動する第２の電磁反
発機構とからなることを特徴とする請求項１に記載の回
路遮断器。 ３、前記第２の電磁反発機構は、 第２限流接点台と、該第２限流接点台の回動中心に関し
て接点の反対側端と対向する端部が前記第１の電磁反発
機構の第１接点台の端部と互いに連結されていることを
特徴とする請求項２に記載の回路遮断器。[Claims] 1. In a circuit breaker having an electromagnetic repulsion mechanism caused by currents flowing in opposite directions between a movable contact block and a current-limiting contact block,
A circuit breaker comprising at least two sets of electromagnetic repulsion mechanisms that rotate the current-limiting contact block using electromagnetic repulsion forces generated on both sides of the center of rotation of the current-limiting contact block as a couple. 2. The electromagnetic repulsion mechanism includes a movable contact base, a first current-limiting contact base having a contact that comes into contact with the movable contact base, and an end opposite to the contact with respect to the rotation center of the first current-limiting contact base. a first contact base having opposing ends; a first electromagnetic repulsion mechanism that rotates the first current-limiting contact base using a couple of electromagnetic repulsion forces generated on both sides of the rotation center; and a second current-limiting contact. a second contact base having a contact that comes into contact with the second current-limiting contact base, and an end of the contact opposite to the rotation center of the second current-limiting contact base is connected to the end of the first contact base; Claim 1, characterized in that it consists of a second contact block facing each other and a second electromagnetic repulsion mechanism that rotates using electromagnetic repulsion forces generated on both sides of the center of rotation of the second current-limiting contact block as a couple. A circuit breaker as described in . 3. The second electromagnetic repulsion mechanism has a second current-limiting contact base, and an end opposite to the opposite end of the contact with respect to the rotation center of the second current-limiting contact base is the first electromagnetic repulsion mechanism. The circuit breaker according to claim 2, wherein the circuit breaker is connected to an end of the first contact block.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1318752A JP2711002B2 (en) | 1989-12-11 | 1989-12-11 | Circuit breaker |
| PCT/JP1990/000835 WO1991000609A1 (en) | 1989-06-30 | 1990-06-27 | Circuit breaker |
| EP90909849A EP0482197B1 (en) | 1989-06-30 | 1990-06-27 | Circuit breaker |
| DE69030666T DE69030666T2 (en) | 1989-06-30 | 1990-06-27 | OFF SWITCH |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1318752A JP2711002B2 (en) | 1989-12-11 | 1989-12-11 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03182028A true JPH03182028A (en) | 1991-08-08 |
| JP2711002B2 JP2711002B2 (en) | 1998-02-10 |
Family
ID=18102543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1318752A Expired - Fee Related JP2711002B2 (en) | 1989-06-30 | 1989-12-11 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2711002B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866751A1 (en) * | 2004-02-19 | 2005-08-26 | Fuji Elec Fa Components & Sys | Contactor device for repulsion type circuit breaker, has movable contactor with movable contact at one end and rotatably supported by shaft at other end, and open-close mechanism to drive contactor to open and close contactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558835U (en) * | 1978-07-03 | 1980-01-21 | ||
| JPH01265423A (en) * | 1988-04-18 | 1989-10-23 | Fuji Electric Co Ltd | Circuit breaker |
-
1989
- 1989-12-11 JP JP1318752A patent/JP2711002B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558835U (en) * | 1978-07-03 | 1980-01-21 | ||
| JPH01265423A (en) * | 1988-04-18 | 1989-10-23 | Fuji Electric Co Ltd | Circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866751A1 (en) * | 2004-02-19 | 2005-08-26 | Fuji Elec Fa Components & Sys | Contactor device for repulsion type circuit breaker, has movable contactor with movable contact at one end and rotatably supported by shaft at other end, and open-close mechanism to drive contactor to open and close contactor |
| US6975190B2 (en) | 2004-02-19 | 2005-12-13 | Fuji Electric Fa Components & Systems Co., Ltd. | Contactor device of circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2711002B2 (en) | 1998-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |