JPS5925143A - Arc extinguishing device in circuit breaker - Google Patents
Arc extinguishing device in circuit breakerInfo
- Publication number
- JPS5925143A JPS5925143A JP13422782A JP13422782A JPS5925143A JP S5925143 A JPS5925143 A JP S5925143A JP 13422782 A JP13422782 A JP 13422782A JP 13422782 A JP13422782 A JP 13422782A JP S5925143 A JPS5925143 A JP S5925143A
- Authority
- JP
- Japan
- Prior art keywords
- contacts
- arc
- contact
- main
- auxiliary
- 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
Landscapes
- Breakers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（利用分野）
本発明は回路しゃ断器の開極時アーク・ｉグリッドにて
分割しゃ断する回路しゃ断器に於ける消に装置に関する
。DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a circuit breaker circuit breaker circuit breaker which divides and cuts an arc at an i-grid when the circuit breaker is opened.
（従来技術の問題点）
従来、補助接点は耐アーク性の接点材料でなり、アーク
接点として取り付けられ短絡電流しゃ断時に主接点がし
ゃ断アークによって摩耗、劣化することを軽減せること
を意図していた。そのため、投入時には補助接点主接点
の順で接触し、遮断時には主接点、補助接点の順で開離
するようになっている。しかし、実際には遮断アークは
主接点。(Problems with the prior art) Conventionally, the auxiliary contacts were made of arc-resistant contact material and were installed as arc contacts with the intention of reducing wear and deterioration of the main contacts due to the interruption arc when the short-circuit current was interrupted. . Therefore, when the power is turned on, the auxiliary contact and the main contact are contacted in this order, and when the power is turned off, the main contact and the auxiliary contact are opened in that order. However, in reality, the breaking arc is the main contact.
補助接点の両方に発生し、主接点に発生するアークが電
流零点まで消弧しないということが、主接点と補助接点
のインピーダンスの関係で生じ、補助接点がその使用目
的を充すようには働かなかった。The fact that an arc that occurs at both auxiliary contacts and at the main contact is not extinguished until the current reaches zero occurs due to the impedance relationship between the main and auxiliary contacts, and the auxiliary contacts do not work to fulfill their intended purpose. There wasn't.
（目 的）
本発明は上記の点に鑑みてなしたものであＰで、即ち開
極時に両生、補助接点間にしや整板を挿入してアークを
先ず主接点より引き離し°Ｃグリッド側にＵ字形に引き
延ばし、そのＵ字形によってアーク電流を逆向として反
発力を作用させアークを分断することを目的としたもの
である。(Purpose) The present invention has been made in view of the above points. That is, when the contact is opened, an arc plate is inserted between the auxiliary and auxiliary contacts to first separate the arc from the main contact and move it toward the °C grid. The purpose is to stretch the arc into a U-shape and use the U-shape to reverse the arc current and apply a repulsive force to break the arc.
（実施例）
以下本考案を一実施例として掲げた図面に基づいて説明
すると、１はしゃ断器本体で、器台２とカバー３とでな
している。４は電源側端子装置、５は負荷側端子装置で
、共に器台２に装備されている。６は電源側端子装＠４
に連らなった端子板で、主固定接点７ａと補助接点７ｂ
とを設けている。８ｍは主可動接点、８ｂは補助可動接
点で、基端を軸１０にて支持された可動接点板９の自由
端に設けられている。１１はハンドル１２の駆動部で可
動接点板９の中程をリンク１３と軸１４にて支持してい
る。従って可動接点板９はハンドル駆動部１１の動作で
基端の軸１０を中心にリンク１３にて自由端を持ち」二
げられ、主、補助可動接点８ａ、８ｂが開極する。１５
は電磁石装置等の過電流動作素子で、大電流が流れた際
、前記ハンドル駆動部１１を連動させる。１６は消弧グ
リッドで、複数枚積層されて消弧装置１７をなす。１８
は可動接一点板９に連動する絶縁物製のしや銘板で、主
、補助可動接点３ａ 、３ｂの開極時挿入され、且つ開
極時離脱する。尚、具体的には可動接点板９に上リンク
片１９の一端を軸２０にて枢着し、且つ下リンク片２１
を器台２に軸２２にて枢支し、両者１９．２１を更に軸
２３にてリンク結合し、この軸２３にしや銘板１８を同
様に枢支し、下リンク片２１の足２４にて蹴り上げる。(Example) The present invention will be described below based on the drawings as an example. Reference numeral 1 denotes a breaker main body, which is made up of a stand 2 and a cover 3. 4 is a power supply side terminal device, and 5 is a load side terminal device, both of which are installed on the device stand 2. 6 is the power supply side terminal equipment @4
A terminal board connected to the main fixed contact 7a and the auxiliary contact 7b.
and. 8m is a main movable contact, and 8b is an auxiliary movable contact, which are provided at the free end of a movable contact plate 9 whose base end is supported by a shaft 10. Reference numeral 11 denotes a drive portion of the handle 12, which supports the middle of the movable contact plate 9 by a link 13 and a shaft 14. Therefore, the movable contact plate 9 is lifted with its free end by the link 13 about the shaft 10 at the base end by the operation of the handle drive unit 11, and the main and auxiliary movable contacts 8a and 8b are opened. 15
is an overcurrent operation element such as an electromagnet device, which operates the handle drive section 11 when a large current flows. 16 is an arc extinguishing grid, and a plurality of sheets are stacked to form an arc extinguishing device 17. 18
is a name plate made of an insulator that is linked to the movable contact plate 9, and is inserted when the main and auxiliary movable contacts 3a and 3b are opened, and is removed when the contacts are opened. Specifically, one end of the upper link piece 19 is pivotally attached to the movable contact plate 9 by a shaft 20, and the lower link piece 21 is pivoted to the movable contact plate 9.
is pivoted to the instrument base 2 by a shaft 22, and both 19 and 21 are further linked together by a shaft 23. The nameplate 18 is similarly pivoted to this shaft 23, and the leg 24 of the lower link piece 21 Kick up.
２５は足２４のガイドで器台２に設けられている。Reference numeral 25 is a guide for the legs 24 and is provided on the table 2.
（動 作）
次に本発明に係る消弧装置の動作を説明すると、第１図
に於ては両接点７．８が接合しており、しや銘板１８は
離脱している。(Operation) Next, the operation of the arc extinguishing device according to the present invention will be explained. In FIG. 1, both contacts 7 and 8 are connected, and the cap plate 18 is separated.
上記状態より過電流が流れると、ハンドル駆動部１１に
て可動接点板９が作動して開極する。When an overcurrent flows in the above state, the movable contact plate 9 is actuated in the handle drive unit 11 to open the contact.
これに伴ってしや銘板１８が両生接点７ａ、８ａ側から
挿入して両生接点７ｍ、８＆のアークを先ず分断し、両
補助接点７ｂ 、Ｂｂにて史にアークを引き延ばす。Accordingly, the shield nameplate 18 is inserted from the side of the amphiphilic contacts 7a, 8a, first breaking the arc of the amphiphilic contacts 7m, 8&, and then extending the arc at both the auxiliary contacts 7b, Bb.
而してこの状態は第２図に示し、アークはしや銘板１８
が補助接点７ｂ、Ｂｂまで介入することによりグリッド
１６に沿ってＵ字形に引き延ばされる。従ってそのアー
ク電流は矢印で示す如く互に反対となり、電磁反発力に
てますますＵ字形の広がろうとし、遂には分断されるの
である。This state is shown in Fig. 2, and the arc edge nameplate 18
intervenes up to the auxiliary contacts 7b and Bb, thereby extending it into a U-shape along the grid 16. Therefore, the arc currents become opposite to each other as shown by the arrows, and due to the electromagnetic repulsion force, the arc currents tend to spread further into a U-shape, and are finally separated.
（効果）
本発明は上記の如（、可動接点板９に連動して開極時に
両生、ｗｌ助接点間にしや銘板１８を挿入させ、且つこ
の介入により先ず主接点７ａ 、８ａのアークを分断し
、次いで近接した複数グリッド１６にアークをＵ字形に
引き延ばさせたから、アーク電流はグリッド１６の部分
にて互に電流方向が反対となって電磁反発力が作用し、
ますます引き延ばしと広がりによってアーク電圧は高ま
り、遂には分断されることとなり、大容量しゃ断、或は
高速しゃ断に対応できると共に、この構造を採ることに
よって主接点７８．８ａから補助接点７ｂ。(Effects) The present invention operates as described above (i.e., interlocking with the movable contact plate 9, inserting the name plate 18 between the amphiphilic and wl auxiliary contacts when the contact is opened, and by this intervention, the arcs of the main contacts 7a and 8a are first separated. Then, since the arc is extended in a U-shape by a plurality of adjacent grids 16, the directions of the arc currents are opposite to each other in the grids 16, and electromagnetic repulsion acts.
The arc voltage increases as the arc expands and spreads, and is finally broken, making it possible to handle large-capacity breaker or high-speed breaker, and by adopting this structure, the arc voltage is increased from the main contact 78.8a to the auxiliary contact 7b.
８ｂへのアークの転位を確実に行い、補助接点の機能を
充分に効果がある。The arc is reliably transferred to 8b, and the function of the auxiliary contact is sufficiently effective.
図面は本発明回路しゃ断器に於ける消弧装置の一実施例
を示し、第１図は断面図、第２図は動作図である。
７ｍ、７ｂ・・・固定側主接点、補助接点、３ａ、８ｂ
・・・可動側主接点、補助接点、９・・・可動接点板、
１６・・・グリッド、１７・・・消弧装置、１８・・・
しや銘板。
特許出願人
松下電工株式会社
代理人弁理士 竹 元 敏 丸
（ほか２名）The drawings show an embodiment of the arc extinguishing device in the circuit breaker of the present invention, with FIG. 1 being a sectional view and FIG. 2 being an operational diagram. 7m, 7b...Fixed side main contact, auxiliary contact, 3a, 8b
...Movable side main contact, auxiliary contact, 9...Movable contact plate,
16... Grid, 17... Arc extinguishing device, 18...
Shiya nameplate. Patent applicant Matsushita Electric Works Co., Ltd. Representative patent attorney Toshimaru Takemoto (and 2 others)
Claims (1)
ンドル駆動部の均整状態を崩して可動接点を固定接点よ
り開極させる回路しゃ断器に於て、前記主回路しゃ所用
主接点とアークを切る補助接点とに区分して可動接点板
に装備し、この主接点、補助接点に対応して固定接点も
同様に区分して端子板に装備し、可動接点板に連動して
その開極時可動、固定側の両接点間に挿入し、且つ閉極
で離脱すると共に、而も両生接点側に位置した絶縁物製
しや整板と、このしや整板と反対側に位置し、且つ両補
助接点に近接した複数枚の消弧グリッドよりなる消弧装
置とでなる回路しゃ断器に於ける消弧装置。When an overcurrent flows, the circuit breaker breaks the symmetry of the handle drive part in response to the operation of the overcurrent operation element and opens the movable contact from the fixed contact, the main contact for the main circuit and the main circuit breaker. The auxiliary contacts that cut the arc are separated and installed on the movable contact plate. Corresponding to these main contacts and auxiliary contacts, the fixed contacts are similarly separated and installed on the terminal board. It is inserted between both contacts on the movable and fixed sides when the pole is turned, and is removed when the pole is closed, and there is also an insulating sheet and plate located on the bidirectional contact side, and a sheet plate located on the opposite side of the sheet and plate. , and an arc extinguishing device comprising a plurality of arc extinguishing grids close to both auxiliary contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13422782A JPS5925143A (en) | 1982-07-30 | 1982-07-30 | Arc extinguishing device in circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13422782A JPS5925143A (en) | 1982-07-30 | 1982-07-30 | Arc extinguishing device in circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5925143A true JPS5925143A (en) | 1984-02-09 |
| JPH0136654B2 JPH0136654B2 (en) | 1989-08-01 |
Family
ID=15123390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13422782A Granted JPS5925143A (en) | 1982-07-30 | 1982-07-30 | Arc extinguishing device in circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5925143A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61256542A (en) * | 1985-05-06 | 1986-11-14 | ラ テレメカニク エレクトリク | Protective switching apparatus for short-circuit current |
| JPS62172107A (en) * | 1986-01-23 | 1987-07-29 | Daido Steel Co Ltd | Method and device of discharging residue in waste melting disposing furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49122369U (en) * | 1973-02-15 | 1974-10-19 | ||
| JPS5585733U (en) * | 1978-12-08 | 1980-06-13 |
-
1982
- 1982-07-30 JP JP13422782A patent/JPS5925143A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49122369U (en) * | 1973-02-15 | 1974-10-19 | ||
| JPS5585733U (en) * | 1978-12-08 | 1980-06-13 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61256542A (en) * | 1985-05-06 | 1986-11-14 | ラ テレメカニク エレクトリク | Protective switching apparatus for short-circuit current |
| JPS62172107A (en) * | 1986-01-23 | 1987-07-29 | Daido Steel Co Ltd | Method and device of discharging residue in waste melting disposing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0136654B2 (en) | 1989-08-01 |
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