JPS5846530A - Breaker operating mechanism - Google Patents
Breaker operating mechanismInfo
- Publication number
- JPS5846530A JPS5846530A JP14472781A JP14472781A JPS5846530A JP S5846530 A JPS5846530 A JP S5846530A JP 14472781 A JP14472781 A JP 14472781A JP 14472781 A JP14472781 A JP 14472781A JP S5846530 A JPS5846530 A JP S5846530A
- Authority
- JP
- Japan
- Prior art keywords
- closing
- lever
- opening
- locking
- plate
- 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.)
- Pending
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (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】 本発明はしゃ断器の投入操作機構に関する。[Detailed description of the invention] The present invention relates to a breaker closing operation mechanism.
しゃ断器にあっては、いったん投入した後、誤つて再投
入操作されたときに各部の機構が損傷しないことが望ま
しいが、従来は、再投入に対して何も考慮していないか
、あるーは、再投入時に回路を一時しゃ断して各部の機
構の損傷を防止するように構成されている。It is desirable for a breaker to not be damaged if the circuit breaker is accidentally turned on again after it has been turned on, but in the past, no consideration was given to re-turning on the circuit breaker, or there was no consideration given to it. is configured to temporarily cut off the circuit when it is turned on again to prevent damage to the mechanisms of each part.
第1図は、従来のしゃ断器の構成の一例をしゃ断状態で
示し、ここでlは操作ハンドルであや、操作ハンドル/
により動作するローラコがラッチ3により操作板qと係
合され、操作ハンドルlが軸jを中心に回動されると操
作板参もそれに伴なって回動される。この操作板41%
Cはビン6ムを介して投入ばね6が掛止され、また操作
ロッド7がビンtを介して連結されている。FIG. 1 shows an example of the configuration of a conventional circuit breaker in the cut-off state, where l is the operating handle and the operating handle/
The roller operated by the latch 3 is engaged with the operating plate q, and when the operating handle l is rotated about the axis j, the operating plate q is also rotated accordingly. This operation board 41%
A closing spring 6 is hooked to C through a pin 6m, and an operating rod 7 is connected through a pin t.
9は開閉レバーであや、りンク10 、 //を介して
操作ロッド7の他端に連結されてψる。リンク10゜/
/の連結ピン/、2には鎖錠レバー13が連結されてお
鯵、引外しコイル/lにより駆動されるトリップレバー
15が鎖錠レバー13の溝孔16内に取付けられていて
、ト°す・ツブレバーlSの回動により鎖錠レバー13
が摺動するようになっている。また、開閉レバーデーI
IXIIM輸77Km1着されておシ、投入時に開閉レ
バーtが回動させられると、開閉軸〃も回動して接点(
図示せず)が閉じられてし十W#器が投入される。なお
、回路に異常事態が発生した場合には、引外しフィルl
#OプランジャItがトリップレバ―/1を時計方向に
回動させるので、鎖錠レバー/Jが後述する第3図の状
態から第1図示の位置まで動き、開閉レパーデを介して
開閉軸12が回動して回路がしゃ断されるようになって
いる。Reference numeral 9 denotes an opening/closing lever which is connected to the other end of the operating rod 7 via a link 10, //. Link 10°/
A locking lever 13 is connected to the connecting pin /, 2 of /, and a trip lever 15 driven by a tripping coil /l is installed in the slot 16 of the locking lever 13. The locking lever 13 is locked by rotating the lever lS.
is designed to slide. In addition, the opening/closing lever day I
IXIIM has been imported for 77km1, and when the opening/closing lever t is rotated at the time of input, the opening/closing shaft also rotates and the contact point (
(not shown) is closed and a 10W# generator is turned on. In addition, if an abnormal situation occurs in the circuit, the trip filter l
#O Plunger It rotates the trip lever /1 clockwise, so the locking lever /J moves from the state shown in Figure 3 (described later) to the position shown in Figure 1, and the opening/closing shaft 12 rotates via the opening/closing lever. The circuit is cut off when the motor moves.
このようなしゃ断状態から、しゃ断器を投入するため、
操作ハンドルIを投入方向に操作すると、ローラ2およ
びラッチ3によ抄操作板参が夏時計方向Kll動する。In order to turn on the breaker in such a cut-off state,
When the operating handle I is operated in the closing direction, the roller 2 and latch 3 move the paper-making operation plate in the summer clockwise direction.
これにより、投入ばね6が延伸されて投入エネルギが蓄
積され始め、操作ロッド7およびリンクlσを介して鎖
錠レバー/Jが、その溝孔74 Kよりトリップレバー
tjyE沿って、第2図に示すよう々位置まで摺動する
。操作ハンドルlを更に、投入方向に操作すると、ラッ
チ3がローラコから外れると同時に、ローラコが操作板
参の円弧部ダムに乗染上げてレバーlと操作板ダとの保
合が解かれる。これKより、操作板ダが投入ばね≦の張
力により時計方向に回動して、操作ロッド7が連動し、
各部材が第3図に示す投入状態に位置する。すなわち、
トリップレバー15が反時計方向に回動してプランジャ
IKを左方に移動させると共に1半月型のトリップレバ
ー軸tSムが鎖錠レバー13を係止させ、また、開閉レ
バーデを介して開閉軸17を回動させて投入される。As a result, the closing spring 6 is extended and input energy begins to be accumulated, and the locking lever/J is moved from its slot 74K along the trip lever tjyE through the operating rod 7 and the link lσ, as shown in FIG. Slide it into position. When the operation handle 1 is further operated in the closing direction, the latch 3 is disengaged from the roller, and at the same time, the roller 1 rides up to the arcuate dam of the operation plate, and the lever 1 and the operation plate are disengaged. From this K, the operating plate DA rotates clockwise due to the tension of the closing spring≦, and the operating rod 7 is interlocked.
Each member is in the closed state shown in FIG. That is,
The trip lever 15 rotates counterclockwise to move the plunger IK to the left, and the half-moon shaped trip lever shaft tS locks the locking lever 13, and the opening/closing shaft 17 is rotated via the opening/closing lever de. It is thrown in by rotating it.
上述した投入状態において、第4I図に示すように操作
ハンドルlを反投入方向に操作した後、誤って、操作ハ
ンドルlが再投入されると、鎖錠レバー13がトリップ
レバー軸1SAK係止されているので、その再投入力が
操作ロッド7、リンク10 。In the above-mentioned closed state, if the operating handle l is operated in the counter-closing direction as shown in FIG. Therefore, the reloading force is applied to the operating rod 7 and the link 10.
// 、鎖錠レバー/Jおよび開閉レバー9の一連のリ
ンク機構に伝達され、これらリンク機構等が損傷するこ
とがある。// , is transmitted to a series of link mechanisms of the locking lever /J and the opening/closing lever 9, and these link mechanisms may be damaged.
そこで、第S図に示すように1再投入時に回路をしゃ断
させるようにして、リンク機構等の損傷管防止するよう
にした装置が提案されている。すなわち、再投入操作す
るため、操作ハンドルlを反投入方向に操作すると、操
作ハンドルIがレバーXを反時計方向に回動させ、レバ
ーJ/を介してブツシュロッドnがトリップレバー/1
を時針方向に回動させる。これによ抄、前述したように
、鎖錠レバー/3がトリップレバー/Sから解放される
ので、開閉軸〃が回動して回路がしゃ断される。従って
、再投入操作によ鰺、再び各リンク等が投入動作を行t
−s過大な力がリンク機構等に加わら1にい。Therefore, as shown in FIG. S, a device has been proposed in which the circuit is cut off when the power is turned on again to prevent damage to the link mechanism or the like. That is, when the operating handle l is operated in the counter-closing direction to perform a re-closing operation, the operating handle I rotates the lever X counterclockwise, and the bushing rod n moves to the trip lever
rotate in the direction of the hour hand. As a result, as described above, the locking lever /3 is released from the trip lever /S, so the opening/closing shaft rotates and the circuit is cut off. Therefore, when the re-insertion operation is performed, each link etc. performs the ejection operation again.
-s Excessive force may not be applied to the link mechanism, etc.
しかしながら、このようなしゃ断−においては、腰って
再投入操作されると、回路がしゃ断されてリンク機構部
を損傷しないようにしているので、リンク機構等の損傷
は売れるが、いったん回路をし中断、すなわち負荷を変
化させるという弊害が゛生じ、さらに1機構−複雑とf
kや高価となるだけでなく、機構のし中断動作によって
電気接点および消弧媒体の一命を縮めるという欠点があ
った。However, in this type of cut-off, if the circuit is turned off and turned on again, the circuit is cut off and the link mechanism is prevented from being damaged. This causes the disadvantage of interruption, i.e. changing the load, and also increases the complexity and complexity of the mechanism.
Not only is this method expensive and expensive, but it also has the disadvantage of shortening the life of the electrical contacts and the arc-extinguishing medium due to the interruption of the mechanism's operation.
本発明の目的は、このような従来の欠点を除去し、一つ
たん投入操作した後は、操作ハンドルを再投入しても、
操作ハンドルと操作板とが係合し危いようにしたしゃ断
器の投入操作機構を提供することにある。The purpose of the present invention is to eliminate such conventional drawbacks, so that after a single input operation, even if the operation handle is input again,
To provide a closing operation mechanism for a breaker in which an operation handle and an operation plate are engaged to make it dangerous.
す表わち、本発明はしゃ断ばねにより付勢されし中断器
の投入およびしゃ断を挙る開閉軸を回動させる開閉レバ
ーと、回動自在に軸支され操作ノ・7ドルと係脱する保
合部を備えるとともに投入ばれに連結された操作板と、
該操作板を前記開閉レバーに連結する連結レバー機構と
を備え、前記操作ハンドルを前記保合部に係合して前記
操作板を回動させることにより前記投入ばね中にしゃ断
器の投入のためのエネルギを蓄積するとともに該71ン
ドルを前記保合部から離脱させ該投入エネルギを釈放さ
せてしゃ断器を投入するようKしたしゃ断器の投入操作
機構において、前記開閉軸ないしは開閉レバーに連動す
る鎖錠手段を設け、前記操作板ネ投入エネルギの非蓄積
位置KTo9かつ前記開閉レバーが投入位置にあるとき
に限り該鎖錠手段により前記保合部を閉鎖して前記操作
ノ・ンドルの該係合部への係合を不能にするよう構成し
たことを特徴とするものである。In other words, the present invention includes an opening/closing lever that is biased by a shutoff spring and rotates an opening/closing shaft that turns on and off the interrupter, and an opening/closing lever that is rotatably supported on the shaft and engages and disengages with the operating knob. an operation plate including a retaining part and connected to the input barrel;
a connecting lever mechanism that connects the operating plate to the opening/closing lever, and the breaker is inserted into the closing spring by engaging the operating handle with the retaining portion and rotating the operating plate. In the breaker closing operation mechanism, the breaker is configured to accumulate energy and detach the 71-strand from the retaining portion to release the input energy and close the breaker, the chain interlocking with the opening/closing shaft or the opening/closing lever. A locking means is provided, and the locking means closes the retaining portion to engage the operating knob only when the operating plate is in the non-accumulating position KTo9 of input energy and the opening/closing lever is in the closing position. It is characterized by being configured to make it impossible to engage with the part.
以下、間両に基づ−て本発明を説明する。なお以下・で
lE1図〜第j図と同様の箇所には同一符号を付すもの
とする。Hereinafter, the present invention will be explained based on a brief explanation. In the following, the same reference numerals are given to the same parts as in Figures 1E1 to 1J.
第4gは本発明の構成の一例をしゃ断状態で示し、こむ
で、鐸は第7図に詳細に示したインタロツタレバーであ
抄、取付用のビン=7L#0ム、長孔即Bおよび円弧部
#Cをそれぞれ形成しておく。このインタロックレバー
−を投入ばねごと共にビンtムによ)操作板#に連結し
、また開閉軸nに固着した支持アームVをビン侵を介し
てインタロックレバー−の長孔#BK連結する。すなわ
ち、ピンqが長孔#Bを衝動するようにしである。No. 4g shows an example of the configuration of the present invention in a cut-off state. Each circular arc portion #C is formed in advance. This interlock lever is connected to the operating plate #BK with a closing spring through a pin, and the support arm V fixed to the opening/closing shaft n is connected to the long hole #BK of the interlock lever through a pin. . That is, the pin q is designed to urge the elongated hole #B.
このようなインタクックレバー即を取付けたし中断器O
操作機構にお−て、操作ハンドルlを投入方向に@動さ
せると、第を図に示すように、投入ばね4が延伸されて
投入エネルギが徐々に蓄積され始め、操作ハンドルlと
操作飯事との保合が解かれると、第1g′に示すような
投入状態が得られる。I installed this kind of intercook lever and interrupter O.
In the operating mechanism, when the operating handle 1 is moved in the closing direction, the closing spring 4 is stretched and the input energy begins to be gradually accumulated, as shown in the figure, and the operating handle 1 and the operation result are When the bond is released, a closed state as shown in 1g' is obtained.
ここで、第9図に示す投入状態においては、インタロッ
クレバーQと操作板ダとが第7θ図に詳細に示すような
位置関係にあるようKしておき、各部の寸法を次のよう
に定めである。すなわち、第1θ図において、操作板ダ
の円弧部参Bを軸30細心を中心とする半径R4上に形
成して、投入ばね乙による投入動作時に、円弧部4IB
がローラコに沿って時計方向に回動するようにしておく
。一方、インタロックレバー憎の円弧部f6Qを軸jの
軸心・を中心とする半径R2上に形成しておき、第9図
の状態において、操作ハンドルlを反投入方向に操作し
た。ときに、ローラコと同軸のピン2ムが円弧部me上
に乗9上がるようにしておく。Here, in the closed state shown in Fig. 9, the interlock lever Q and the operation plate D are arranged in a positional relationship as shown in detail in Fig. 7θ, and the dimensions of each part are set as follows. It is a rule. That is, in Fig. 1θ, the arc portion 4IB of the operation plate is formed on the radius R4 centered on the center of the shaft 30, and when the closing operation is performed by the closing spring B, the circular arc portion 4IB
so that it rotates clockwise along the rollercoat. On the other hand, an arcuate portion f6Q of the interlock lever was formed on a radius R2 centered on the axis j of the shaft j, and the operating handle l was operated in the counter-closing direction in the state shown in FIG. At times, the pin 2 which is coaxial with the roller is placed above the arc portion me.
このように構成した、しゃ断器の投入操作機構において
は、第を図、第1図および第9図に示すように、しゃ断
状態から投入状態への投入操作は従来のしゃ断器と同一
であるが、第1O図に示すように、再投入操作に移行す
るため、操作ハンドルlを反投入方向に操作すると、ロ
ーラーのビンコムがインクロックレバ−%の円弧部mc
に乗り上がる。従って、再投入時にけ操作ノ・ンドルl
を操作板ダと保合することができ衾いので、再投1人と
いう誤操作を未然に防止できる。In the circuit breaker closing operation mechanism configured in this way, as shown in Figure 1, Figure 1, and Figure 9, the closing operation from the shut-off state to the closing state is the same as that of conventional circuit breakers. , as shown in Fig. 1O, when the operation handle l is operated in the counter-loading direction in order to shift to the re-loading operation, the roller Vincom moves to the arcuate portion mc of the ink lock lever %.
get on top of it. Therefore, when re-entering the
Since it is possible to securely match the operation panel with the operation board, it is possible to prevent erroneous operations where only one person has to re-throw the ball.
第111i!杜本発明O他の実施例を示し、インタロッ
クレバーに代えて鎖錠板を用−たものである。。111i! Another embodiment of the Morimoto invention is shown, in which a lock plate is used in place of the interlock lever. .
第11図はしゃ断器が投入された状態を示し、ここで、
Qは鎖錠板であ艷、開閉軸ty K一端を固着して、1
llI軸〃とともに@動する。しかして、図に示すよう
に、開閉軸nが投入位置KToD、操作飯事が投入エネ
ルギーO非蓄積位置にある場合に1鎖錠板Qの自由端が
、第1IJ @ K示したと同様にして、操作ハンドル
lと操作飯事との保合を阻止する。Figure 11 shows the state in which the circuit breaker is turned on, where:
Q is a locking plate, one end of the opening/closing shaft ty K is fixed, and 1
Moves with the llI axis. Therefore, as shown in the figure, when the opening/closing shaft n is in the input position KToD and the operation function is in the input energy O non-storage position, the free end of the first locking plate Q is in the same manner as shown in the first IJ @K. , prevents the operation handle l from engaging with the operation function.
従って、再投入を防止できる。Therefore, re-insertion can be prevented.
以上説tしてきたように、本発明によれば、投入操作後
は、操作ハンドルを再投入しても操作ハンドルと操作板
とが係合しなψようKしたので、リンク機構等に損傷を
与えることがない。As explained above, according to the present invention, after the closing operation, the operation handle and the operation plate are prevented from engaging even if the operation handle is turned on again, thereby preventing damage to the link mechanism, etc. I have nothing to give.
tた1本発明によれば、−路をしゃ断せずに再投入操作
を防止できるので各部品の耐久性を向上させることがで
する。According to the present invention, it is possible to prevent the reinsertion operation without cutting off the - path, thereby improving the durability of each component.
更に1本発明によれば、構成が単純であるため廉価であ
り、しかも、信頼性の高いしゃ断器の操作機構が得られ
る。Furthermore, according to the present invention, a breaker operating mechanism that is simple in structure, inexpensive, and highly reliable can be obtained.
第7図は従来のしゃ断器の操作機構の一例をしゃ断状態
で示す構成図、第2図はその投入操作の途中経過を示す
構成図、第3図はその投入状態を示す構成図、第ダ図は
投入操作後、反投入方向に操作ハンドルを操作した状態
を示す構成図、第・ 3図は従来の操作機構の他の例を
示す構成図、第4図は本発明の一実施例をしゃ断状態で
示す構成図、第7図はそのインタロックレバーの形状を
示す部品図、第1図はその投入操作の途中経過を示す構
成図、第を図はその投入状態を示す構成図、第10図は
第9図の要部を説明す為説明図、第1I図は本発明の他
の実施例を示す構成図でああ。
/−・・操作ハンドル、コ・・・ローラ隻コム、≦ム、
t、U−・・ビン、 4・・・ばね、7・・・操作ロ
ッド、 デ・・・開閉レバー、tO、U−・リン
ク、12−・連結ビン、13・・・鎖錠レバー、l#・
・・引外しコイル。
/j’−)リップレバー、nム・・・トリップレバー軸
、14−・溝孔、 〃・・・開閉軸。
/l−・プランジャ、 M 、 1/・・・レバ
ー、n−プツシニーラド、 W・−インタロックレバー
、−ムービン孔、1I7B・−・長孔、
#O−円l1部、#/・・・支持アーム、ξ・・・ビン
1R−鎮錠板。
特許出願人 富士電機製造株式金社Fig. 7 is a block diagram showing an example of the operating mechanism of a conventional circuit breaker in the cut-off state, Fig. 2 is a block diagram showing the progress of the closing operation, and Figure 3 is a block diagram showing the closing state. The figure is a block diagram showing a state in which the operating handle is operated in the opposite direction after the closing operation, Figure 3 is a block diagram showing another example of the conventional operating mechanism, and Figure 4 is a diagram showing one embodiment of the present invention. Fig. 7 is a block diagram showing the shape of the interlock lever; Fig. 1 is a block diagram showing the progress of the closing operation; Fig. 7 is a block diagram showing the closing state; FIG. 10 is an explanatory diagram for explaining the main part of FIG. 9, and FIG. 1I is a configuration diagram showing another embodiment of the present invention. /-...operation handle, controller...roller com, ≦mu,
t, U-...bin, 4...spring, 7...operating rod, D...opening/closing lever, tO, U-link, 12--connecting bin, 13...locking lever, l #・
...Tripping coil. /j'-) Lip lever, nm...Trip lever shaft, 14--Slot hole, 〃...Opening/closing shaft. /l--plunger, M, 1/... lever, n-pushnyrad, W--interlock lever, -movin hole, 1I7B--long hole, #O-circle l1 part, #/... support Arm, ξ...bin 1R-locking board. Patent applicant: Fuji Electric Manufacturing Co., Ltd.
Claims (1)
ゃ断を挙る開閉軸を回動させる開閉レバーと5回動自在
に軸支され操作ハンドルと係脱する保合部を備えるとと
もに投入ばねに連結された操作板と、該操作板を前記開
閉レバーに連結する連結レーバー機構とを備え、前記操
作ハンドルを前記保合部に係合して前記操作板を回動さ
せることにより前記投入ばね中にし中断器の投入のため
のエネルギを蓄積するとともに該ハンドルを前記保合部
から離脱させ該投入エネルギを釈放させてしゃ断器を投
入するようKしたしゃ断器の投入操作機構において、前
記開閉軸ないしは開閉レバーに連動する鎖錠手段を設け
、前記操作板が投入エネルギーの非蓄積位置にありかつ
前記開閉レバーが投入位置にあるときに限艶該鎖錠手段
によ抄前記係舎部を閉鎖して前記操作ハンドルの該保合
部への保合を不能にするよう構成上たことを特徴とする
しゃ断IIO投入操作機構。 2) 特許請求osim第1項記載の投入操作機構にお
いて、前記鎖錠手段が前i開閉軸ないし開閉レバーに取
付けられた鎖錠板としてなり、該鎖錠板が前記操作板の
保合部を閉鎖する鎖錠部を備えることを特徴とするしゃ
断器の投入操作機構。 墨) 特許請求の範囲第1項記載の投入操作機構□にお
いて、前記鎖錠手段が回動自在に軸支されたインターロ
ックレバ−としてe!1% mVレバー一端が前記開閉
軸な−し開閉レバーに保合されるとともに他端に前記操
作板の保合部を閉鎖する鎖錠部を備えること〜を特徴と
するL +Ir Itの投入操作機構。[Scope of Claims] 1) An opening/closing lever that is biased by a shutoff spring K and rotates an opening/closing shaft that turns on and off the breaker, and is pivotably supported for five rotations and engages with and disengages from the operation handle. The operation plate includes a retaining portion and is connected to a closing spring, and a connecting lever mechanism that connects the operation plate to the opening/closing lever, and the operation handle is engaged with the retaining portion to open the operation plate. By rotating the breaker, energy for closing the breaker is accumulated in the closing spring, and the handle is separated from the retaining portion to release the input energy and close the breaker. The closing operation mechanism is provided with a locking means interlocked with the opening/closing shaft or the opening/closing lever, and the locking means is locked when the operation plate is in a position where input energy is not stored and the opening/closing lever is in the closing position. 1. A shutoff IIO closing operation mechanism, characterized in that the locking section is closed to make it impossible to lock the operation handle to the locking section. 2) In the closing operation mechanism according to claim 1, the locking means is a locking plate attached to the front opening/closing shaft or opening/closing lever, and the locking plate holds the retaining portion of the operating plate. A closing operation mechanism for a circuit breaker, characterized by comprising a locking part that closes. In the closing operation mechanism □ according to claim 1, the locking means is rotatably supported as an interlock lever e! An L+Ir It closing operation characterized in that one end of the 1% mV lever is secured to the opening/closing lever without the opening/closing shaft, and the other end is provided with a locking portion for closing the securing portion of the operation plate. mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14472781A JPS5846530A (en) | 1981-09-16 | 1981-09-16 | Breaker operating mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14472781A JPS5846530A (en) | 1981-09-16 | 1981-09-16 | Breaker operating mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5846530A true JPS5846530A (en) | 1983-03-18 |
Family
ID=15368913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14472781A Pending JPS5846530A (en) | 1981-09-16 | 1981-09-16 | Breaker operating mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5846530A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9431185B2 (en) | 2012-11-01 | 2016-08-30 | Mitsubishi Electric Corporation | Spring operation device for switchgear |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54114771A (en) * | 1978-02-27 | 1979-09-07 | Ogaki Denki Seisakushiyo Kk | Manual control device for breaker and so on |
JPS551056A (en) * | 1978-06-20 | 1980-01-07 | Mitsubishi Electric Corp | Device for preventing breaker from pumping |
-
1981
- 1981-09-16 JP JP14472781A patent/JPS5846530A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54114771A (en) * | 1978-02-27 | 1979-09-07 | Ogaki Denki Seisakushiyo Kk | Manual control device for breaker and so on |
JPS551056A (en) * | 1978-06-20 | 1980-01-07 | Mitsubishi Electric Corp | Device for preventing breaker from pumping |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9431185B2 (en) | 2012-11-01 | 2016-08-30 | Mitsubishi Electric Corporation | Spring operation device for switchgear |
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