JPH02239529A - High-voltage vacuum electromagnetic contactor - Google Patents

Abstract

PURPOSE:To offer a high voltage vacuum electromagnetic contactor which can be automatically made by spring energization even when service is interrupted due to troubles of a control power source and the like by providing spring means for energizing a vacuum interrupter in closed condition, and an electromagnetic coil for breaking the vacuum interrupter. CONSTITUTION:A vacuum interrupter 1 is mechanically energized is closed condition by the force of a closing spring 5 under non-excited condition. When an electromagnetic coil MC is excited a moveable iron core 3 is attracted set put in a turning movement by the electromagnetic force, and the electrode of the vacuum interrupter 1 is pushed down by a control board 2 fixed to an operating shaft 4, so that the circuit is opened. After the circuit is opened, the electrode of an operating coil 6 provided to the electromagnetic coil MC is interrupted and electricity is transmitted to only a holding coil 7, whereby the opened condition can be maintained with small electric power. Thus, when service is interrupted due to troubles of a control power source and the like, the main circuit can be automatically made by spring energization or can be maintained in closed condition.

Description

【発明の詳細な説明】 Ａ．産業上の利用分野 本発明は、電力系統の安定維持のための保護継電装置に
使用される高圧真空電磁接触器に関し、特に、制御電源
喪失の場合等に主回路を閉路する逆励磁方式の高圧真空
電磁接触器に関する。[Detailed Description of the Invention] A. INDUSTRIAL APPLICATION FIELD The present invention relates to a high-voltage vacuum electromagnetic contactor used in a protective relay device for maintaining the stability of an electric power system, and in particular to a reverse excitation type electromagnetic contactor that closes the main circuit in the event of a loss of control power. Regarding high pressure vacuum electromagnetic contactor.

Ｂ，発明の概要 本発明は、電力系統の安定維持のため保護継電装置に使
用される高圧真空電磁接触器において、真空インクラブ
タを閉路状態へ付勢するバネ手段と、真空インクラブタ
を開路状態へ駆動する操作コイルと、その開路状態を保
持する保持コイルとを備えることにより、小電力で開路
状態を保持でき、また、制御電源のトラブルなど所要の
際には主回路に電流を流すことができ、コイル断線等の
トラブルにも主回路を直ちに閉路する技術を提供するも
のである。B. Summary of the Invention The present invention provides a high-pressure vacuum electromagnetic contactor used in a protective relay device to maintain the stability of a power system, including a spring means for biasing a vacuum incrementor to a closed state, and a spring means for biasing a vacuum incrementor to an open state. By having an operation coil to drive and a holding coil to maintain the open circuit state, the open circuit state can be maintained with small electric power, and current can be passed through the main circuit in case of trouble with the control power supply or other necessary situations. , it provides a technology that immediately closes the main circuit even in the event of a trouble such as a coil disconnection.

Ｃ．従来の技術 保護ｍ７４装置は電力系統を安定維持するために重要な
存在であるが、その一部に、真空インタラプタを開閉す
る高圧真空電磁接触器が使用されている。C. Conventional technology protection m74 equipment is important for maintaining the stability of the power system, and a part of it uses a high-pressure vacuum electromagnetic contactor to open and close a vacuum interrupter.

第４図は、高圧真空電磁接触器の一般的な構造を示す構
成図である。同図において、４１は真空インタラプタ、
４２は各真空インタラプタ４１に接続される電力ヒュー
ズ、４３は各真空インタラプタ４ｌ及び各電力ヒューズ
４２を固定する絶縁フレーム、４４は操作軸、４５は開
閉操作機構、４６はラッチ機構である。FIG. 4 is a block diagram showing the general structure of a high-pressure vacuum electromagnetic contactor. In the same figure, 41 is a vacuum interrupter;
42 is a power fuse connected to each vacuum interrupter 41, 43 is an insulating frame for fixing each vacuum interrupter 4l and each power fuse 42, 44 is an operation shaft, 45 is an opening/closing operation mechanism, and 46 is a latch mechanism.

第５図は上記開閉操作機構の一例を示す説明図で、同図
（ａ）は真空インタラプタ５ｌの投入状態を示し、同図
（ｂ）は引外し状態を示している。FIG. 5 is an explanatory diagram showing an example of the opening/closing operation mechanism, in which FIG. 5(a) shows the vacuum interrupter 5l in a closed state, and FIG. 5(b) shows a tripped state.

図中５１は真空インタラプタ、５２はその操作板、５３
は可動鉄心、５４は操作板５２及び可動鉄心５３が回動
する際の操作軸、５５は可動鉄心５３を真空インタラプ
タ５ｌの開路側へ付勢する開路用バネ、５６は可動鉄心
５３を吸引し、真空インタラプタ５１の閉路側へ回動さ
せる操作コイル、５７はその回動を停止させるストッパ
、５８は上記各手段を収納するモールドケースである。In the figure, 51 is a vacuum interrupter, 52 is its operation panel, and 53
54 is a movable iron core, 54 is an operating shaft when the operation plate 52 and movable iron core 53 rotate, 55 is an opening spring that urges the movable iron core 53 toward the opening side of the vacuum interrupter 5l, and 56 is a spring that attracts the movable iron core 53. , an operating coil for rotating the vacuum interrupter 51 toward the closing side, 57 a stopper for stopping the rotation, and 58 a molded case for housing each of the above-mentioned means.

真空インタラプタ５１は電源側端子５１ａ及び負荷側端
子５ｌｂを前記モールドケース５８より突出させ、負荷
側端子５ｌｂはリード線５１ｃで接続されている。真空
インタラプタ５１は、絶縁ロッド５９及び圧接バネ６０
を介して前記操作板５２により駆動され、該操作板５２
は前記操作軸５４により可動鉄心５３と同軸に同動する
。The vacuum interrupter 51 has a power supply side terminal 51a and a load side terminal 5lb protruding from the molded case 58, and the load side terminal 5lb is connected with a lead wire 51c. The vacuum interrupter 51 includes an insulating rod 59 and a pressure spring 60.
is driven by the operation plate 52 via the operation plate 52.
is moved coaxially with the movable iron core 53 by the operation shaft 54.

従来の高圧真空電磁接触器には、常時励磁式とラッチ式
とがあって、常時励磁式では、電磁石の可動鉄心５３を
操作コイル５６の吸引力によって動作させ、瞬間的に真
空インクラブタ５１を閉路状態にし、これを保持するた
めには節約抵抗を直列に接続し、保持アンペアターンの
吸引力により第５図（ａ）に示す投入状態としておいて
、その励磁が切られると、開路用バネ５５の付勢により
第５図（ｂ）に示す引外し状態になるようにしている。Conventional high-pressure vacuum electromagnetic contactors include a constantly excited type and a latch type. In the constantly excited type, the movable core 53 of the electromagnet is operated by the attraction force of the operating coil 56, and the vacuum incretor 51 is instantaneously closed. In order to maintain this state, a saving resistor is connected in series, and the attractive force of the holding ampere turn brings the closed state shown in FIG. 5(a). When the excitation is cut off, the opening spring 55 The biasing force causes the tripping state shown in FIG. 5(b) to be established.

この場合はラッチ機構は必要でない。In this case no latching mechanism is required.

また、電磁石の吸引力により閉路させた後は機械的なラ
ッチ機構により閉路状態を保持し、開路させる際にはラ
ッチ機構に内蔵する引外しコイルによってラッチの係合
を解除するラ・ツチ式も採用されている。In addition, there is also a la-tsuchi type, which uses a mechanical latch mechanism to maintain the closed circuit state after the circuit is closed by the attractive force of an electromagnet, and releases the latch engagement by a tripping coil built into the latch mechanism when opening the circuit. It has been adopted.

Ｄ．発明が解決しようとする課題 しかしながら、上記の各方式は、いずれも電力系統のみ
を考慮した従来の配線に対応させたもので、現在のシス
テムでは制御系統の比重が過去に比較して遥かに増大し
ている。用途によっては、操作・制御回路にトラブルが
発生し、電源を喪失した場合、主回路を閉路状態にして
欲しいことがあり、万一の場合でも主回路を閉路状態に
して高圧電源を供給する必要のある負荷があるが、Ｌ記
従来の方式で、常時励磁式では保持電流の喪失により自
動的に一律に開路してしまい、ラッチ式では開路状態の
まま操作電源がなくなると閉路操作が不可能になるとい
う難点があった。これは１つには、電磁接触器の規格が
負荷の開閉性能を付与することに基づいている点にも起
因する。D. Problems to be Solved by the Invention However, each of the above-mentioned systems is compatible with conventional wiring that only takes into account the power system, and in today's systems, the weight of control systems has increased far more than in the past. are doing. Depending on the application, if a problem occurs in the operation/control circuit and power is lost, the main circuit may be required to be closed, and even in the unlikely event of an emergency, it is necessary to close the main circuit and supply high-voltage power. There is a certain load, but with the conventional method described in L, the constant excitation type automatically opens the circuit uniformly due to loss of holding current, and the latching type cannot close the circuit if the operating power is lost while the circuit remains open. There was a problem with becoming. This is partly due to the fact that the standards for electromagnetic contactors are based on providing load switching performance.

本発明は、このような課題に鑑みて創案されたもので、
制御電源のトラブルで停電した場合など所要の際には回
路に電流を流すことが可能で、コイル断線等のトラブル
にも主回路を直ちに閉路、又は閉路状態を維持する高圧
真空電磁接触器を提供することを目的としている。The present invention was created in view of these problems, and
We provide high-voltage vacuum electromagnetic contactors that can supply current to the circuit when necessary, such as in the event of a power outage due to a problem with the control power supply, and can immediately close the main circuit or maintain a closed state even in the event of trouble such as coil breakage. It is intended to.

Ｅ．課題を解決するための手段 本発明における上記課題を解決するための手段は、真空
インタラプタを開閉する高圧真空電磁接触器において、
該真空インタラプタを閉路状態へ付勢するバネ手段と、
真空インタラプタを開路状態にする電磁コイルとを設け
、且つこの電磁コイルを操作コイルと、その開路状態を
保持する保持コイルとで構成した高圧真空電磁接触器と
するものである。E. Means for Solving the Problems Means for solving the above problems in the present invention is a high-pressure vacuum electromagnetic contactor that opens and closes a vacuum interrupter.
spring means for biasing the vacuum interrupter into a closed circuit condition;
The high-voltage vacuum electromagnetic contactor is provided with an electromagnetic coil for opening a vacuum interrupter, and this electromagnetic coil is composed of an operating coil and a holding coil for maintaining the open circuit state.

Ｆ。作用 本発明は、真空インタラプタを閉路する方向ヘ常時のバ
ネ付勢を行うことによって、所要の際に主回路に電流を
流し得るようにした逆励磁方式の構成で、無励磁状態で
はバネ付勢により機械的に閉路状態を保ち、これを開路
したい場合は電磁力で引外すようになっている。そして
、引外し操作は高速かつ強力であることが必要なので、
コイルを２種類とし、まず強力な操作コイルで可動鉄心
を吸引することにより開路状態に回動させたのち、その
開路状態を保持コイルで継続的に保つ。制御電源のトラ
ブル等により停電した場合には、保持コイルの励磁が解
かれ、バネ付勢で自動的に投入されて、主回路に電流を
流す。また、コイル断線等のトラブル時にも、主回路は
直ちに閉路する。F. Function The present invention has a configuration of a reverse excitation system that allows current to flow through the main circuit when required by normally biasing a spring in the direction of closing the vacuum interrupter. The circuit is mechanically maintained in a closed state, and when it is desired to open the circuit, it is pulled out using electromagnetic force. And since the tripping operation needs to be fast and powerful,
There are two types of coils. First, a powerful operating coil attracts the movable iron core to rotate it into an open state, and then a holding coil continuously maintains the open state. In the event of a power outage due to a problem with the control power supply, the holding coil is de-energized and automatically turned on by the spring bias, allowing current to flow through the main circuit. Furthermore, in the event of a trouble such as a coil breakage, the main circuit is immediately closed.

Ｇ．実施例 以下、図面を参照して、本発明の実施例を詳細に説明す
る。G. Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

第１図は本発明の一実施例を示す構成図であり、第２図
は実施例の正面図である。両図において、■は真空イン
タラプタ、２は真空インタラプタｌの操作板、３は可動
鉄心、４は操作板２及び可動鉄心３を同軸に回動させる
操作軸、５は閉路用バネ、ＭＣは本発明の電磁コイルで
、操作コイル６および保持コイル７を有する。８はスト
ッパ、９はＱ接点、１０は枠、１１は絶縁フレームであ
る。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a front view of the embodiment. In both figures, ■ is the vacuum interrupter, 2 is the operation plate of the vacuum interrupter l, 3 is the movable iron core, 4 is the operation shaft that rotates the operation plate 2 and the movable iron core 3 coaxially, 5 is the spring for closing, and MC is the main body. The electromagnetic coil of the invention has an operating coil 6 and a holding coil 7. 8 is a stopper, 9 is a Q contact, 10 is a frame, and 11 is an insulating frame.

無励磁状態では、真空インタラプタｌは閉路用バネ５の
力により機械的に閉路状態に付勢されている。電磁コイ
ルＭＣを励磁すると、電磁力により可動鉄心３が吸引さ
れて回動し、操作軸４に固定された操作板２により真空
インクラブタｌの電極が押し下げられ、開路状態になる
。開路状態にした後、電磁コイルＭＣに有する操作コイ
ル６の電極を遮断し、保持コイル７のみに通電しておけ
ば、小電力で開路状態を保持できることになる。In the non-energized state, the vacuum interrupter 1 is mechanically urged to close by the force of the circuit-closing spring 5. When the electromagnetic coil MC is excited, the movable iron core 3 is attracted by the electromagnetic force and rotates, and the electrode of the vacuum incretor I is pushed down by the operation plate 2 fixed to the operation shaft 4, thereby opening the circuit. After the open circuit state is established, if the electrode of the operating coil 6 included in the electromagnetic coil MC is cut off and only the holding coil 7 is energized, the open circuit state can be maintained with a small amount of electric power.

第３図は、上記実施例の操作回路の一例を示す構成図で
ある。同図において、Ｑは接触器に内蔵され、電磁コイ
ル無励磁状態でオンする補助接点、Ｒｙは該接点Ｑによ
り動作するリレーで、常開接点Ｒｙｌを有する。ＭＣＸ
は制御リレーで、常Ｍ接点ＭＣＸＩ，ＭＣＸ２を６゛す
る。６は電磁コイルＭＣの操作コイル、７は該操作コイ
ル６の約ｌ／１０のアンペアターン（連続定格）を有す
る保持コイル、ＦＢＩは開路の押釦スイッチ、Ｐ　［３
　２は閉路の押釦スイッチである。この回路で開路用押
釦スイッチＦＢＩを押すと、制御リレーＭ　Ｃ　Ｘが励
磁されて、その接点ＭＣＸＩ．ＭＣＸ２を才ンする。そ
して自己保持すると同時に、操作コイル６及び保持コイ
ル７を励磁して可動鉄心３を吸引し、真空インクラブタ
を開路する。真空インクラプタが開路すると接点Ｑが開
き、リレーＲｙの励磁を解き、その接点Ｒｙｌがオフし
て操作コイル６の電流を遮断する。以降は保持コイル７
のみで開路状態を保持する。FIG. 3 is a configuration diagram showing an example of the operating circuit of the above embodiment. In the figure, Q is an auxiliary contact built into the contactor and turned on when the electromagnetic coil is not energized, and Ry is a relay operated by the contact Q, which has a normally open contact Ryl. MCX
is a control relay that normally connects M contacts MCXI and MCX2. 6 is an operating coil of the electromagnetic coil MC, 7 is a holding coil having an ampere turn (continuous rating) of about 1/10 of the operating coil 6, FBI is an open push button switch, P[3
2 is a closed push button switch. When the opening pushbutton switch FBI is pressed in this circuit, control relay MCX is energized and its contacts MCXI. Master MCX2. At the same time as self-holding, the operating coil 6 and holding coil 7 are energized to attract the movable iron core 3, and the vacuum incretor is opened. When the vacuum inruptor opens, the contact Q opens, de-energizing the relay Ry, and its contact Ryl turns off, cutting off the current in the operating coil 6. After that, holding coil 7
The open circuit state is maintained only by

本発明の高圧真空電磁接触器では励磁により開路状聾と
なり、無励磁で閉路状態となるので、制御電源のトラブ
ル等で停電すると、バネ付勢により自動的に投入して主
回路を閉路するか、また閉路状態を維持することができ
る。そして常時開路状聾を保持する場合で６、アンペア
ターンの極く小さい保持コイルで保持しているので、小
電力で開路状態を維持することができる。The high-voltage vacuum electromagnetic contactor of the present invention becomes an open circuit when energized and becomes a closed circuit when not energized, so if there is a power outage due to a problem with the control power supply, the spring bias will automatically turn on the circuit and close the main circuit. , it is also possible to maintain a closed circuit state. In the case where the hearing is kept in an open circuit state at all times, the open circuit state can be maintained with a small amount of electric power because it is maintained by a holding coil with an extremely small ampere turn.

Ｆｉ．発明の効果 以上、説明したとおり、本発明によれば、制御電源のト
ラブルで停電した場合など所要の際には主回路に電流を
流すことができ、コイル断線等のトラブルにも主回路を
直ちに閉路する高圧真空電磁接触器を提供することがで
きる。Fi. Effects of the Invention As explained above, according to the present invention, current can be passed through the main circuit when necessary, such as when there is a power outage due to a problem with the control power supply, and the main circuit can be immediately turned off in the event of a trouble such as a coil breakage. A high-pressure vacuum electromagnetic contactor that closes the circuit can be provided.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例の構造図、第２図は該実施例
の正面図、第３図は実施例の操作回路の構成図、第４図
は従来例の構造図、第５図は開閉機構の説明図である。 １，４．１．５１・・・真空インタラプタ、２．５２・
・・操作板、３．５３，６１．６６・・・可動鉄心、４
，４４．５４．６９・・・操作軸、５・・・閉路用バネ
、６，５６・・・操作コイル、７・・・保持コイル、８
，５７・・・ストッパ、９・・・Ｑｔｌ、１０・・・枠
、Ｉｆ，４３・・・絶縁フレーム、４５・・・開閉操作
機構、４６・・・ラフチ機構、５５・・・開路用バネ、
ＭＣ・・・電磁コイル。 第１図 本発明のーｌｌ施守１の構量図 外２名 第２図 本発明の一麩タ・１の正面図 ＭＣｔ！ｉａフイ；冫ゝ８１ト−ク″ 第３図 實亮會ｌの操作回洛の横氏区 第 図 従来例の峠はヒ２ 第５図 Ｉ％ｌ！ｌｖｌ操作樹壜の説明因 （ａ） （ｂ） ５１具空］ンタフブタFig. 1 is a structural diagram of an embodiment of the present invention, Fig. 2 is a front view of the embodiment, Fig. 3 is a configuration diagram of the operating circuit of the embodiment, Fig. 4 is a structural diagram of a conventional example, and Fig. 5 is a structural diagram of an embodiment of the present invention. The figure is an explanatory diagram of the opening/closing mechanism. 1,4.1.51...Vacuum interrupter, 2.52.
...Operation board, 3.53, 61.66...Movable iron core, 4
, 44.54.69... Operating shaft, 5... Spring for closing, 6, 56... Operating coil, 7... Holding coil, 8
, 57... Stopper, 9... Qtl, 10... Frame, If, 43... Insulating frame, 45... Opening/closing operation mechanism, 46... Ruff mechanism, 55... Spring for opening ,
MC...Electromagnetic coil. Fig. 1: Two people outside the structural drawing of the present invention -ll maintenance 1 Fig. 2: Front view of the present invention -ll maintenance 1 MCt! ia phi;冫ゝ81talk'' Fig. 3 The operating loop of the Jiliang Association Fig. The conventional example of the pass is Hi2 Fig. 5 I%l! ) (b) 51 items empty] Ntafubuta

Claims (1)

【特許請求の範囲】[Claims] （１）真空インタラプタを開閉する高圧真空電磁接触器
において、真空インタラプタを閉路状態へ付勢するバネ
手段と、真空インタラプタを開路状態にする電磁コイル
とを設け、且つこの電磁コイルを操作コイルと、その開
路状態を保持する保持コイルとで構成したことを特徴と
する高圧真空電磁接触器。(1) A high-pressure vacuum electromagnetic contactor for opening and closing a vacuum interrupter is provided with a spring means for biasing the vacuum interrupter to a closed circuit state and an electromagnetic coil for switching the vacuum interrupter to an open circuit state, and this electromagnetic coil is used as an operating coil, A high-voltage vacuum electromagnetic contactor characterized by comprising a holding coil that maintains the open circuit state.