JP2019212581A - Shut-off device - Google Patents
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Abstract
Description
本発明は、遮断装置に関するものである。 The present invention relates to a shut-off device.
特許文献１に記載されているように、接点に発生したアークを消弧するために半導体を用いることが知られている。このような消弧方法は二つの接点を備える回路においても使用されており、この場合、一方の接点に並設させるように半導体素子からなる無アーク回路を接続し、接点開放時に生じるアークを半導体素子に転入させる構造としている。 As described in Patent Document 1, it is known to use a semiconductor to extinguish an arc generated at a contact. Such an arc extinguishing method is also used in a circuit having two contacts. In this case, an arc-free circuit composed of semiconductor elements is connected so as to be juxtaposed with one contact, and an arc generated when the contact is opened is a semiconductor. It is structured to be transferred into the element.
ところで、図９に示す開閉器のように、複数極の第一の接点１１１、第二の接点１２１を備えた遮断装置１００を用いる場合には、遮断装置１００の入力側端子１００ａには直流電源６が、出力側端子１００ｂには負荷７が接続される。
この遮断装置１００は、ハンドル２００を操作して接点１１１、１２１の開閉操作を行うことを可能とするため、各接点１１１、１２１が筐体に形成されるハンドル２００の操作に連動するように形成されている。この遮断装置１００が通電状態の際に、ハンドル２００を操作して接点１１１、１２１を開放するとアークが生じる。このアークを消弧するためには、無アーク回路１３１が接続される第１の接点１１１が先に開放し、次いで可動接触子１２１ａの動作により第２の接点１２１が開放するように動作させる必要がある。一方、遮断装置１００の接点の開極時に、ハンドル２００に連結されている第１の接点１１１を第二の接点１２１より先に開放する構造とする場合には、遮断装置１００の接点の閉極時には、第二の接点１２１が先に閉じた後に、次いで無アーク回路１３１を形成した第一の接点１１１が後に閉じる動作を行う形になる。この場合、図９（ａ）のように、先に第二の接点１２１が閉じられることにより、無アーク回路１３１を形成した第一の接点１１１の両端のａｂ間に電位差が生じた状態となる。この状態で図９（ｂ）のように、第一の接点１１１を開放状態から閉極する際に、接点の「バウンド」または「擦れ(すれ)」が発生すると、短い時間でON・OFFを繰り返すチャタリング等が発生する。チャタリングが発生すると、図１０に示すように、瞬間的に高い電圧にノイズが侵入し、無アーク回路１３１の半導体素子に定格電圧以上印加され、半導体素子が破壊される虞があった。
By the way, when using the breaking device 100 having the first contact 111 and the second contact 121 having a plurality of poles as in the switch shown in FIG. 9, a DC power supply is used as the input terminal 100 a of the breaking device 100. 6 and a load 7 is connected to the output side terminal 100b.
In order to be able to open and close the contacts 111 and 121 by operating the handle 200, the blocking device 100 is formed so that each contact 111 and 121 is interlocked with the operation of the handle 200 formed on the housing. Has been. When the breaker 100 is energized, an arc is generated when the handle 200 is operated to open the contacts 111 and 121. In order to extinguish this arc, the first contact 111 to which the arc-free circuit 131 is connected must be opened first, and then the second contact 121 must be opened by the operation of the movable contact 121a. There is. On the other hand, when the first contact 111 connected to the handle 200 is opened before the second contact 121 when the contact of the breaker 100 is opened, the contact of the breaker 100 is closed. Sometimes, after the second contact 121 is closed first, the first contact 111 having the arc-free circuit 131 is subsequently closed. In this case, as shown in FIG. 9A, when the second contact 121 is closed first, a potential difference is generated between a and b at both ends of the first contact 111 where the arc-free circuit 131 is formed. . In this state, as shown in FIG. 9 (b), when the first contact point 111 is closed from the open state, if the contact “bound” or “rubbing” occurs, the ON / OFF is turned on in a short time. Repeated chattering occurs. When chattering occurs, as shown in FIG. 10, noise instantaneously enters a high voltage and is applied to the semiconductor element of the arc-free circuit 131 above the rated voltage, which may destroy the semiconductor element.
本件の発明者は、この点について鋭意検討することにより、解決を試みた。本発明の課題は、閉極時に接点に並設させた半導体素子にノイズが侵入しないようにすることである。 The inventor of the present case tried to solve the problem by diligently examining this point. An object of the present invention is to prevent noise from entering a semiconductor element arranged in parallel with a contact at the time of closing.
上記課題を解決するため、第１の入力側端子と第１の負荷側端子との間に接続された第一の接点と、第２の入力側端子と第２の負荷側端子との間に接続された第二の接点と、を備え、第一の接点には、開極時に生じるアークを半導体素子に転流させることで消弧可能な無アーク回路を、並設させた遮断装置であって、閉極時には第二の接点よりも先に第一の接点を閉じる遮断装置とする。 In order to solve the above-described problem, a first contact connected between the first input terminal and the first load terminal, and a second input terminal and the second load terminal are connected. And a second contact point, and the first contact point is a circuit breaker in which arc-free circuits that can be extinguished by commutating an arc generated at the time of opening to a semiconductor element are arranged in parallel. Thus, the closing device closes the first contact before the second contact at the time of closing.
また、各接点に設けられた可動接触子を動作させる機構部を接点毎に独立して設け、各々の機構部は独立して動作可能である構成とすることが好ましい。 In addition, it is preferable that a mechanism for operating the movable contact provided at each contact is provided independently for each contact, and each mechanism is operable independently.
また、制御部が各々の機構部の動作を個別に制御する構成とすることが好ましい。 Moreover, it is preferable that the control unit individually controls the operation of each mechanism unit.
本発明では、閉極時に接点に並設させた半導体素子にノイズが侵入しないようにすることが可能となる。 According to the present invention, it is possible to prevent noise from entering the semiconductor elements arranged in parallel with the contacts at the time of closing.
以下に発明を実施するための形態を示す。本実施形態の遮断装置１は、第１の入力側端子１ａ（１ａ−１）と第１の負荷側端子１ｂ（１ｂ−１）との間に接続された第一の接点１１と、第２の入力側端子１ａ（１ａ−２）と第２の負荷側端子１ｂ（１ｂ−２）との間に接続された第二の接点２１とを備えている。また、この遮断装置１の第一の接点１１に、開極時に生じるアークを半導体素子に転流させることで消弧可能な無アーク回路３１を並設させている。また、この遮断装置１は閉極時には第二の接点２１よりも先に第一の接点１１を閉じる。このため、閉極時に第一の接点１１に並設させた半導体素子にノイズが侵入しないようにすることが可能となる。 The form for implementing this invention is shown below. The breaking device 1 of the present embodiment includes a first contact 11 connected between the first input terminal 1a (1a-1) and the first load terminal 1b (1b-1), and a second The second contact 21 connected between the input side terminal 1a (1a-2) and the second load side terminal 1b (1b-2). In addition, an arcless circuit 31 that can be extinguished by causing an arc generated at the time of opening to be commutated to a semiconductor element is provided in parallel at the first contact 11 of the interrupting device 1. Further, when the closing device 1 is closed, the first contact 11 is closed before the second contact 21. For this reason, it becomes possible to prevent noise from entering a semiconductor element arranged in parallel with the first contact 11 at the time of closing.
実施形態では遮断装置１を開閉器として説明する。本実施形態では、開閉器は直流電源６と負荷７との間に配置されている。詳しくは、遮断装置１の入力側端子１ａ−１、１ａ−２間には直流電源６が、出力側端子１ｂ−１、１ｂ−２間には負荷７が接続される。この開閉器は内部に複数極となる二つの接点を備えており、第一の接点１１に並列するように無アーク回路３１が設けられている。この無アーク回路３１は半導体素子が備えられており、半導体素子の制御によって転流させたアークを消弧することができる。なお、半導体素子には金属酸化物半導体電界効果トランジスタなどを用いれば良い。 In the embodiment, the breaking device 1 will be described as a switch. In the present embodiment, the switch is disposed between the DC power source 6 and the load 7. Specifically, a DC power source 6 is connected between the input side terminals 1a-1 and 1a-2 of the interrupting device 1, and a load 7 is connected between the output side terminals 1b-1 and 1b-2. This switch is provided with two contacts that have a plurality of poles inside, and an arc-free circuit 31 is provided in parallel with the first contact 11. The arcless circuit 31 includes a semiconductor element, and can extinguish an arc commutated by controlling the semiconductor element. Note that a metal oxide semiconductor field effect transistor or the like may be used for the semiconductor element.
本実施形態では、負荷７に電流が流れない状態から、負荷７に電流が流れる状態にする場合、開閉器の表面に形成したハンドル２００を操作して、各接点は図１に示す状態から図２に示す状態を経て図３に示す状態となる。つまり、第一の接点１１と第二の接点２１が開かれた状態から、閉極する場合、先ず可動接触子１１ａの動作で第一の接点１１を閉じ、その後に可動接触子２１ａの動作で第二の接点２１を閉じる。このようにすることにより、第一の接点１１両端のａｂ間に電位差が生じないようにできるため、閉極時にチャタリングによるノイズが無アーク回路３１側に侵入する虞がない（図４参照）。そして、負荷７に電流が流れる状態から開極する場合には、可動接触子１１ａの動作で第一の接点１１を先に開放させて、接点開放時に生じるアークを無アーク回路３１に転流させて消弧させた上で、可動接触子２１ａの動作で第二の接点２２を開放させる。これによって、各接点がアークによって劣化することを防止できるものである。なお、図１から図３に示す例では、ハンドル２００の操作に連動して各接点に設けられた可動接触子を動作させる機構部を接点毎に独立して設け、各々の機構部は独立して動作可能である。より具体的には、第一の機構部１４により第一の接点１１の第一の可動接触子１２を動作させることが可能であるとともに、第一の機構部１４とは独立して設けた第二の機構部２４により第二の接点２１の第二の可動接触子２２を動作させることが可能である。このように、第一の機構部１４、第二の機構部２４を独立して形成するため、第一の接点１１を閉極時に先に閉極することができ、開極時にも先に開極することが可能である。 In the present embodiment, when changing from a state where no current flows to the load 7 to a state where current flows to the load 7, the handle 200 formed on the surface of the switch is operated, and each contact is shown in the state shown in FIG. The state shown in FIG. 3 is obtained after the state shown in FIG. That is, when the first contact 11 and the second contact 21 are opened, the first contact 11 is first closed by the operation of the movable contact 11a and then the operation of the movable contact 21a. The second contact 21 is closed. By doing so, it is possible to prevent a potential difference between a and b at both ends of the first contact 11, so that there is no possibility that noise due to chatter enters the arc-less circuit 31 side at the time of closing (see FIG. 4). When opening the current from the state where the current flows through the load 7, the first contact 11 is opened first by the operation of the movable contact 11a, and the arc generated when the contact is opened is commutated to the arcless circuit 31. After the arc is extinguished, the second contact 22 is opened by the operation of the movable contact 21a. As a result, each contact can be prevented from being deteriorated by an arc. In the example shown in FIGS. 1 to 3, a mechanism unit that operates the movable contact provided at each contact in conjunction with the operation of the handle 200 is provided independently for each contact, and each mechanism unit is independent. Can operate. More specifically, the first movable contact 12 of the first contact 11 can be operated by the first mechanism portion 14 and the first mechanism portion 14 is provided independently of the first mechanism portion 14. It is possible to operate the second movable contact 22 of the second contact 21 by the second mechanism portion 24. As described above, since the first mechanism portion 14 and the second mechanism portion 24 are independently formed, the first contact 11 can be closed first when the contact is closed, and the first contact portion 11 can be opened first when the contact is opened. Is possible.
第一の接点１１と第二の接点２１をこのように動かすには、様々な手段が考えられるが、その一例を次に説明する。図５に示す例では、各接点の開放を機械的な動作で制御する方法であって、第一の接点１１に設けられた第一の可動接触子１２と、第二の接点２１に設けられた第二の可動接触子２２が、異なるタイミングで閉じることができるようにしている。本実施形態では第一の***作片１６を動かすことで第一の可動接触子１２を第一の固定接触子１３と接続させることができ、第二の***作片２６を動かすことで第二の可動接触子２２を第二の固定接触子（図示せず）と接続させることができる。 Various means can be considered to move the first contact 11 and the second contact 21 in this way, and an example thereof will be described below. In the example shown in FIG. 5, the opening of each contact is controlled by a mechanical operation, and the first movable contact 12 provided on the first contact 11 and the second contact 21 are provided. The second movable contact 22 can be closed at different timings. In the present embodiment, the first movable contact 12 can be connected to the first fixed contact 13 by moving the first operated piece 16, and the second operated piece 26 can be moved by moving the second operated piece 26. The movable contact 22 can be connected to a second fixed contact (not shown).
第一の***作片１６と第二の***作片２６は各々独立して設けられ、独立して動作可能なものであるが、これらは図示しないハンドルの動作に連動する回動機構部３２によって操作される。本実施形態では、回動可能な回動機構部３２の回動軸から突出するように第一の操作片１５と第二の操作片２５が設けられている。第一の操作片１５と第二の操作片２５は、その突出方向がずれるように設けられており、一つの回動機構部３２を回動させることにより、第一の***作片１６と第二の***作片２６の双方を順に移動させることができる。 The first operated piece 16 and the second operated piece 26 are provided independently and can operate independently, but these are operated by a rotating mechanism portion 32 that is interlocked with the operation of the handle (not shown). Operated. In this embodiment, the 1st operation piece 15 and the 2nd operation piece 25 are provided so that it may protrude from the rotating shaft of the rotation mechanism part 32 which can be rotated. The first operation piece 15 and the second operation piece 25 are provided so that their projecting directions are deviated, and by rotating one rotation mechanism portion 32, the first operation piece 16 and the second operation piece 25 are provided. Both of the second operated pieces 26 can be moved in order.
この際、第一の***作片１６を動かすことで押し上げられた第一の摺動機構部１７により、第一の可動接触子１２を回動させている。また、第二の***作片２６を動かすことで押し上げられた第二の摺動機構部２７により、第二の可動接触子２２を回動させている。なお、実施形態では、第一の固定接触子１３に接圧が掛かり過ぎないようにするため、接圧用ばね３３を設置し、回動機構部３２から受ける力を吸収できるようにしている。 At this time, the first movable contact 12 is rotated by the first sliding mechanism 17 pushed up by moving the first operated piece 16. Further, the second movable contact 22 is rotated by the second sliding mechanism portion 27 pushed up by moving the second operated piece 26. In the embodiment, a contact pressure spring 33 is provided so as to absorb the force received from the rotation mechanism portion 32 so that the contact pressure is not excessively applied to the first fixed contact 13.
本実施形態では、図示しないハンドルで開極操作した時には第二の接点２１よりも先に第一の接点１１を開くように構成している。図５に示された回動機構部３２を閉極時と逆方向に回動させると、第一の接点１１が第二の接点２１よりも後に開かれてしまう。そこで、図６に示す例では、ハンドルでの開極操作した時に、回動機構部３２を直進移動できるように構成した。回動機構部３２を直進移動させることで、第一の***作片１６を支える状態を解除した後に第二の***作片２６を支える状態を解除できるようにしている。本実施形態では、第一の***作片１６の突出長さが第二の***作片２６の突出長さよりも短くなるように設けており、第一の接点１１が第二の接点２１よりも先に開きやすいようにしている。 In the present embodiment, the first contact 11 is opened before the second contact 21 when the opening operation is performed with a handle (not shown). If the rotation mechanism part 32 shown in FIG. 5 is rotated in the opposite direction to that at the time of closing, the first contact 11 is opened after the second contact 21. Therefore, in the example shown in FIG. 6, the rotation mechanism portion 32 can be moved straight when the opening operation is performed with the handle. By moving the rotation mechanism portion 32 straight, the state of supporting the second operated piece 26 can be released after the state of supporting the first operated piece 16 is released. In the present embodiment, the protruding length of the first operated piece 16 is provided so as to be shorter than the protruding length of the second operated piece 26, and the first contact 11 is more than the second contact 21. It is easy to open first.
ところで、各接点に設けられた可動接触子を動作させる機構部を接点毎に独立して設ける場合において、各々の機構部が独立して動作可能とするのは、様々な手法で行うことが可能である。図７及び図８に示す例では、各接点の開放を通信による制御により行う方法であって、機構部を操作する機構部操作片３４を設けている。また、開閉器には制御部３５が連結されている。この制御部３５は各々の機構部の動作を個別に制御することができる。より具体的には、この制御部３５は各々の機構部の動作を個別に制御するように機構部操作片３４を操作できるようにしている。なお、図７及び図８に示す例では、制御部３５が複数設けられており、この制御部３５同士が通信し、閉極時には第二の接点２１よりも先に第一の接点１１を閉じ、開極時には第二の接点２１よりも先に第一の接点１１を開くように制御している。なお、図７及び図８に示す例では第一の接点１１、第二の接点２１を別々の開閉器に形成し、それぞれの開閉器に制御部３５が連結されているものである。複数の接点は開閉器内に設けてあっても良いし、別々の開閉器に形成するものであっても良いものである。 By the way, in the case where a mechanism for operating the movable contact provided at each contact is provided independently for each contact, each mechanism can be operated independently by various methods. It is. In the example shown in FIGS. 7 and 8, each contact is opened by communication control, and a mechanism unit operation piece 34 for operating the mechanism unit is provided. Moreover, the control part 35 is connected with the switch. The control unit 35 can individually control the operation of each mechanism unit. More specifically, the control unit 35 can operate the mechanism unit operating piece 34 so as to individually control the operation of each mechanism unit. In the example shown in FIGS. 7 and 8, a plurality of control units 35 are provided, and the control units 35 communicate with each other, and the first contact 11 is closed before the second contact 21 at the time of closing. The first contact 11 is controlled to be opened before the second contact 21 at the time of opening. In the example shown in FIGS. 7 and 8, the first contact 11 and the second contact 21 are formed in separate switches, and a control unit 35 is connected to each switch. The plurality of contacts may be provided in the switch or may be formed in separate switches.
以上、実施形態を例に挙げて本発明について説明してきたが、本発明は上記実施形態に限定されることはなく、各種の態様とすることが可能である。例えば、遮断装置は開閉器ではなくブレーカとすることも可能である。 As described above, the present invention has been described by taking the embodiment as an example. However, the present invention is not limited to the above-described embodiment, and various aspects can be adopted. For example, the breaker can be a breaker instead of a switch.
また、接点は二つではなく三つ以上とすることも可能である。この場合、閉極時には第一の接点が一番最初に閉じられるようにすればよい。また、開極時には第一の接点が一番最後に開かれるようにすることが好ましい。 Further, the number of contact points can be three or more instead of two. In this case, the first contact may be closed first when closing. Further, it is preferable that the first contact is opened last when the electrode is opened.
１ 遮断装置
１１ 第一の接点
１２ 第一の可動接触子
１４ 第一の機構部
２１ 第二の接点
２２ 第二の可動接触子
２４ 第二の機構部
３１ 無アーク回路
３５ 制御部
DESCRIPTION OF SYMBOLS 1 Breaker 11 1st contact 12 1st movable contact 14 1st mechanism part 21 2nd contact 22 2nd movable contact 24 2nd mechanism part 31 Arcless circuit 35 Control part
Claims (3)
第２の入力側端子と第２の負荷側端子との間に接続された第二の接点と、
を備え、
第一の接点には、開極時に生じるアークを半導体素子に転流させることで消弧可能な無アーク回路を、並設させた遮断装置であって、
閉極時には第二の接点よりも先に第一の接点を閉じる遮断装置。 A first contact connected between the first input terminal and the first load terminal;
A second contact connected between the second input terminal and the second load terminal;
With
The first contact point is a breaker in which arc-free circuits that can be extinguished by commutating an arc generated at the time of opening to a semiconductor element are arranged in parallel,
A shut-off device that closes the first contact before closing the second contact.
各々の機構部は独立して動作可能である請求項１に記載の遮断装置。 A mechanism for operating the movable contact provided at each contact is provided independently for each contact,
The shut-off device according to claim 1, wherein each mechanism unit is operable independently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018110301A JP7102064B2 (en) | 2018-06-08 | 2018-06-08 | Breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018110301A JP7102064B2 (en) | 2018-06-08 | 2018-06-08 | Breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2019212581A true JP2019212581A (en) | 2019-12-12 |
| JP7102064B2 JP7102064B2 (en) | 2022-07-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08212879A (en) * | 1995-02-07 | 1996-08-20 | Sanyo Electric Co Ltd | Supplying and interrupting device of power source and supplying and interrupting method of power source therefor |
| WO2011034140A1 (en) * | 2009-09-16 | 2011-03-24 | 株式会社ワイ・ワイ・エル | Switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08212879A (en) * | 1995-02-07 | 1996-08-20 | Sanyo Electric Co Ltd | Supplying and interrupting device of power source and supplying and interrupting method of power source therefor |
| WO2011034140A1 (en) * | 2009-09-16 | 2011-03-24 | 株式会社ワイ・ワイ・エル | Switch |
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