JP2023136986A - circuit breaker - Google Patents

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JP2023136986A
JP2023136986A JP2022042946A JP2022042946A JP2023136986A JP 2023136986 A JP2023136986 A JP 2023136986A JP 2022042946 A JP2022042946 A JP 2022042946A JP 2022042946 A JP2022042946 A JP 2022042946A JP 2023136986 A JP2023136986 A JP 2023136986A
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connection failure
circuit breaker
display
section
occurrence
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成実 浅井
Shigemi Asai
真也 寺本
Shinya Teramoto
孝資 平井
Takashi Hirai
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Kawamura Electric Inc
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Kawamura Electric Inc
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Abstract

To provide a circuit breaker which, when a connection failure in a terminal portion is detected, displays the location and allows the location of the occurrence to be easily recognized.SOLUTION: A circuit breaker includes overcurrent detection means that detects an overcurrent in an electric circuit L, a disconnecting unit 12 that opens and disconnects a contact unit 11 provided in the electric circuit, a connection failure detection unit 13 detects a connection failure when the connection failure occurs at any of a power supply side terminal 2 and a load side terminal 3, a control unit 15 that causes the disconnecting unit 12 to operate to shut off when the connection failure occurs, and a display unit 14 that indicates the location of the connection failure, and can recognizes the terminal in which the connection failure has occurred by the display on the display unit 14.SELECTED DRAWING: Figure 1

Description

本発明は回路遮断器に関し、特に接続不良が発生したら電路を遮断する機能を備えた回路遮断器に関する。 TECHNICAL FIELD The present invention relates to a circuit breaker, and more particularly to a circuit breaker that has a function of interrupting an electrical circuit when a connection failure occurs.

従来より、過電流が流れたら電路を遮断する基本機能に加えて、接続不良検出回路を備えて、端子部に接続不良が発生したら電路を遮断する回路遮断器がある。
例えば特許文献１では、漏電遮断器に接続不良を検出する回路を設けて、漏電の検知に加えて端子部に接続不良が発生したらそれを検出して電路を遮断した。 Conventionally, there are circuit breakers that have a basic function of cutting off the electrical circuit when an overcurrent flows, and are also equipped with a connection failure detection circuit to cut off the electrical circuit when a connection failure occurs in the terminal section.
For example, in Patent Document 1, an earth leakage breaker is provided with a circuit for detecting a connection failure, and in addition to detecting an earth leakage, when a connection failure occurs at a terminal portion, it is detected and the electrical path is interrupted.

特開２０１４－７２１７８号公報JP2014-72178A

上記従来の接続不良検出回路を備えた漏電遮断器は、遮断の原因が漏電に因るものか接続不良に因るものなのか分かり難いため、漏電表示部及び接続不良表示部を設けて、遮断した原因を一目でわかるようにした。
しかしながら、遮断の原因が何れの端子部に起因しているかまでは表示されないため、端子毎に確認しなければならなかった。 In the conventional earth leakage circuit breaker equipped with a connection failure detection circuit, it is difficult to tell whether the cause of interruption is due to an electric leakage or a connection failure. The cause can be seen at a glance.
However, since it is not displayed which terminal part is the cause of the interruption, it is necessary to check each terminal individually.

そこで、本発明はこのような問題点に鑑み、端子部の接続不良を検出した場合、その場所がどこであるか表示し、発生場所を容易に認識できる回路遮断器を提供することを目的としている。 SUMMARY OF THE INVENTION In view of these problems, it is an object of the present invention to provide a circuit breaker that, when a terminal connection failure is detected, displays the location of the connection failure and allows the location of the connection to be easily recognized. .

上記課題を解決する為に、請求項１の発明は、電路の過電流を検知する過電流検知手段と、電路に設けた接点部を開操作して遮断動作させる遮断手段と、電源側端子及び負荷側端子のうちの何れかの端子で接続不良が発生したら、それを検出する接続不良検出部と、接続不良が発生したら遮断手段を遮断動作させる遮断制御部とを備えた回路遮断器であって、接続不良発生場所を示す表示部を有し、表示部の表示により、接続不良が発生した端子を認識できることを特徴とする。
この構成によれば、接続不良発生場所を示す表示部を備えるため、接続不良が発生したら、その発生端子を認識でき、対処し易い。 In order to solve the above problem, the invention of claim 1 provides an overcurrent detection means for detecting an overcurrent in an electric circuit, a breaking means for operating a contact section provided in the electric circuit to open and disconnect it, and a power supply side terminal and The circuit breaker is equipped with a connection failure detection unit that detects a connection failure that occurs at any of the load-side terminals, and a disconnection control unit that operates the disconnection means to cut off the connection when a connection failure occurs. The present invention is characterized in that it has a display section that shows the location where the connection failure has occurred, and the terminal where the connection failure has occurred can be recognized from the display on the display section.
According to this configuration, since the display unit is provided to indicate the location where a connection failure occurs, if a connection failure occurs, the terminal where the connection failure occurs can be recognized and it is easy to deal with it.

請求項２の発明は、請求項１に記載の構成において、表示部は、接点部の電源側から電源の供給を受けて発光表示することを特徴とする。
この構成によれば、電路が遮断されても表示部は機能を維持して表示を継続できる。然も発光表示するため、遮断した原因を把握し易いし、接続不良場所を容易に特定できる。 According to a second aspect of the present invention, in the configuration according to the first aspect, the display section receives power from the power source side of the contact section and performs light emitting display.
According to this configuration, even if the electric path is interrupted, the display section can maintain its function and continue displaying. Moreover, since it emits light, it is easy to understand the cause of the interruption, and the location of the connection failure can be easily identified.

請求項３の発明は、請求項１又は２に記載の構成において、接続不良検出部が接続不良を検出しても、遮断動作を禁止する遮断禁止設定部を有し、遮断禁止設定された状態で接続不良が発生したら、表示部が発生場所を表示するが電路は遮断されないことを特徴とする。
この構成によれば、接続不良が発生しても通知のみ実施して遮断動作しないよう設定できる。よって、接続不良が発生しても発生する熱は比較的小さくて済む通電電流が比較的小さい負荷が接続された回路遮断器の場合、過度の遮断動作を防ぐことができる。 The invention according to claim 3 is the configuration according to claim 1 or 2, further comprising a disconnection prohibition setting unit that prohibits the disconnection operation even if the connection failure detection unit detects a connection failure, and the disconnection prohibition setting unit is configured to prevent the disconnection from being performed. If a connection failure occurs, the display will display the location where the connection has occurred, but the electrical circuit will not be cut off.
According to this configuration, even if a connection failure occurs, it can be set so that only notification is performed and no shutoff operation is performed. Therefore, in the case of a circuit breaker connected to a load whose current is relatively small and which generates relatively little heat even if a connection failure occurs, excessive breaking operation can be prevented.

請求項４の発明は、請求項１乃至３の何れかに記載の構成において、接続不良発生を外部に通知する信号出力部を有することを特徴とする。
この構成によれば、接続不良発生を外部に通知できるため、回路遮断器が確認し難い場所にあっても、接続不良の発生を認識し易く、放置する事態を防止できる。 The invention according to claim 4 is characterized in that the configuration according to any one of claims 1 to 3 includes a signal output section that notifies the outside of the occurrence of a connection failure.
According to this configuration, since the occurrence of a connection failure can be notified to the outside, even if the circuit breaker is located in a place where it is difficult to check, the occurrence of a connection failure can be easily recognized and a situation where the circuit breaker is left unattended can be prevented.

請求項５の発明は、請求項１乃至４の何れかに記載の構成において、接続不良発生を記憶する記憶部と、接続不良発生の記憶を消去するリセットボタンと、接続不良発生を受けて表示動作している表示部の表示を、リセットボタンが操作されて接続不良発生の記憶が消去されるまで継続させる表示制御部とを有することを特徴とする。
この構成によれば、接続不良を検出すると接続不良の発生を記憶し、リセットボタンが操作されるまで、表示部の表示を維持する。そのため、接続不良発生を操作者に確実に認識させることができ、接続不良が放置されるような事態を防止できる。 The invention according to claim 5 is the configuration according to any one of claims 1 to 4, which includes: a storage unit that stores the occurrence of the connection failure; a reset button that erases the memory of the occurrence of the connection failure; The present invention is characterized in that it includes a display control section that continues displaying on the operating display section until the reset button is operated and the memory of the occurrence of the connection failure is erased.
According to this configuration, when a connection failure is detected, the occurrence of the connection failure is stored, and the display on the display unit is maintained until the reset button is operated. Therefore, it is possible to make the operator reliably aware of the occurrence of a connection failure, and it is possible to prevent a situation where a connection failure is left unaddressed.

本発明によれば、接続不良発生場所を示す表示部を備えるため、接続不良が発生したら、その発生端子を認識でき、対処し易い。 According to the present invention, since a display unit is provided that indicates the location where a connection failure occurs, if a connection failure occurs, the terminal where the connection failure occurs can be recognized and it is easy to deal with the problem.

本発明に係る回路遮断器の一例を示すブロック図である。FIG. 1 is a block diagram showing an example of a circuit breaker according to the present invention. 回路遮断器の正面図である。It is a front view of a circuit breaker. 表示部の動作説明図であり、（ａ）は電源側端子で接続不良が発生した場合、（ｂ）は負荷側端子で接続不良が発生した場合を示している。FIG. 6 is an explanatory diagram of the operation of the display section, in which (a) shows a case where a connection failure occurs at the power supply side terminal, and (b) shows a case where a connection failure occurs at the load side terminal. 接続不良検出に伴う動作の流れを示すフローチャートである。It is a flowchart which shows the flow of operation accompanying connection failure detection.

以下、本発明を具体化した実施の形態を、図面を参照して詳細に説明する。図１は本発明に係る回路遮断器の一例を示すブロック図である。図１に示すように、回路遮断器１は、電源側端子２、負荷側端子３、電源側端子２と負荷側端子３との間の電路Ｌを開閉する接点部１１、接点部１１を開操作する遮断部１２、端子部の接続不良を検出する検出部（接続不良検出部）１３、接続不良発生場所を表示する表示部１４、遮断部１２、表示部１４等を制御する制御部１５、外部に信号を出力する信号出力部１６、接続不良発生を記憶する記憶部１７、接続不良発生に伴う遮断動作を禁止する遮断禁止設定部としての遮断選択部１８、記憶部１７の接続不良発生の記憶を消去するためのリセットボタン１９、電源部２０等を備えている。 Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of a circuit breaker according to the present invention. As shown in FIG. 1, the circuit breaker 1 includes a power supply terminal 2, a load terminal 3, a contact section 11 that opens and closes an electric path L between the power supply terminal 2 and the load terminal 3, and a contact section 11 that opens and closes the electrical circuit L between the power supply terminal 2 and the load terminal 3. A cutoff section 12 to be operated, a detection section (poor connection detection section) 13 that detects a connection failure of a terminal section, a display section 14 that displays a location where a connection failure has occurred, a control section 15 that controls the cutoff section 12, the display section 14, etc. A signal output section 16 that outputs a signal to the outside, a storage section 17 that stores the occurrence of a connection failure, a shutdown selection section 18 that serves as a shutdown prohibition setting section that prohibits a shutdown operation due to the occurrence of a connection failure; It is equipped with a reset button 19 for erasing memory, a power supply section 20, and the like.

そして４は電路Ｌが接続された３相電源であり、ここでは回路遮断器１は３相で構成される電路Ｌに使用される構成を示している。そのため、電源側端子２及び負荷側端子３は３相に対応する３端子を有して構成されている。また、５は外部に設置された発報部であり、回路遮断器１の信号出力部１６の出力信号により発報動作する。
尚、回路遮断器１の基本構成要素である電路Ｌの過電流を検知する過電流検知手段は省略してある。 Reference numeral 4 denotes a three-phase power supply to which the electric line L is connected, and the circuit breaker 1 here shows a configuration used for the electric line L composed of three phases. Therefore, the power supply side terminal 2 and the load side terminal 3 are configured to have three terminals corresponding to three phases. Further, reference numeral 5 denotes an alarm section installed outside, which operates in response to an output signal from the signal output section 16 of the circuit breaker 1.
Note that overcurrent detection means for detecting overcurrent in the electric line L, which is a basic component of the circuit breaker 1, is omitted.

図２は回路遮断器１の正面図を示している。表示部１４は接続不良発生場所を表示するもので、図２に示すように３相（Ｕ，Ｖ，Ｗの３相）の何れであるか表示する相表示部１４ａと、電源側／負荷側のいずれの端子で発生したかを示す検出位置表示部１４ｂを有している。相表示部１４ａは、個々の電源側端子２の近くに並べて配置され、検出位置表示部１４ｂは、負荷側端子３の近くに配置されている。
そして、中央には電路Ｌをオン／オフ操作する操作レバー６が配置され、その右側にリセットボタン１９が配置されている。 FIG. 2 shows a front view of the circuit breaker 1. The display section 14 displays the location where the connection failure has occurred, and as shown in FIG. It has a detection position display section 14b that indicates at which terminal of the occurrence of the occurrence. The phase display sections 14a are arranged side by side near the individual power supply side terminals 2, and the detection position display section 14b is arranged near the load side terminals 3.
An operating lever 6 for turning on/off the electric circuit L is arranged in the center, and a reset button 19 is arranged on the right side of the operating lever 6.

相表示部１４ａはＵ，Ｖ，Ｗの各相に対応する３つの表示部（Ｕ相表示部１４ｕ、Ｖ相表示部１４ｖ、Ｗ相表示部１４ｗ）で構成され、検出位置表示部１４ｂを含めてそれぞれＬＥＤを内蔵し、発光して表示動作する。検出位置表示部１４ｂは、負荷側端子３で接続不良が発生すると発光するよう構成されている。
図１に示すように、表示部１４を含む制御部１５の電源は、接点部１１の電源側の電路Ｌに接続された電源部２０から供給されており、遮断動作して接点部１１が開動作しても、機能を維持するよう構成されている。 The phase display section 14a is composed of three display sections (U phase display section 14u, V phase display section 14v, and W phase display section 14w) corresponding to the U, V, and W phases, including the detection position display section 14b. Each has a built-in LED that emits light to display information. The detection position display section 14b is configured to emit light when a connection failure occurs at the load side terminal 3.
As shown in FIG. 1, power for the control unit 15 including the display unit 14 is supplied from a power supply unit 20 connected to the electric circuit L on the power supply side of the contact unit 11, and the contact unit 11 is opened by a cutoff operation. It is configured to maintain functionality even when it is running.

図３は、表示部１４が表示動作している回路遮断器１の正面図を示し、（ａ）は電源側端子２で接続不良が発生した場合、（ｂ）は負荷側端子３で接続不良が発生した場合を示している。表示部１４のうちハッチングを施した部位は発光した状態を示し、図３（ａ）ではＶ相表示部１４ｖが発光し、検出位置表示部１４ｂは発光していない状態を示している。この表示から、電源側端子２のＶ相の接続端子で接続不良が発生したことがわかる。
また、図３（ｂ）は、Ｕ相表示部１４ｕが発光し、検出位置表示部１４ｂも発光している状態を示している。この表示から、負荷側端子３のＵ相の接続端子で接続不良が発生したことがわかる。 FIG. 3 shows a front view of the circuit breaker 1 in which the display unit 14 is operating the display, in which (a) shows a connection failure at the power supply side terminal 2, and (b) shows a connection failure at the load side terminal 3. This shows the case where this occurs. The hatched portion of the display section 14 shows a state in which light is emitted, and FIG. 3A shows a state in which the V-phase display section 14v is emitted and the detection position display section 14b is not emitted. From this display, it can be seen that a connection failure has occurred at the V-phase connection terminal of the power supply side terminal 2.
Further, FIG. 3(b) shows a state in which the U-phase display section 14u emits light and the detection position display section 14b also emits light. From this display, it can be seen that a connection failure has occurred at the U-phase connection terminal of the load side terminal 3.

上記の如く構成された回路遮断器１の接続不良発生に伴う動作は以下のようである。図４は動作の流れを示すフローチャートであり、図４を参照して説明する。
接続不良検知は、回路遮断器１が投入された段階で開始され、制御部１５の制御により次のように制御される。
操作レバー６がオン操作（Ｓ１）されることで制御が開始（Ｓ１でＹＥＳ）される。但し、オンされると、まず記憶部１７の記憶状態を読み取り、接続不良発生の記憶の有無で次の制御が決定される。接続不良発生の記憶が無ければ（Ｓ２でＹＥＳ）、接続不良の検出を開始（Ｓ３）する。接続不良発生の記憶があれば（Ｓ２でＮＯ）、後述するＳ１２に進む。 The operation of the circuit breaker 1 configured as described above when a connection failure occurs is as follows. FIG. 4 is a flowchart showing the flow of operations, which will be explained with reference to FIG.
Connection failure detection starts when the circuit breaker 1 is turned on, and is controlled by the control unit 15 as follows.
Control is started (YES in S1) when the operating lever 6 is turned on (S1). However, when turned on, the storage state of the storage section 17 is first read, and the next control is determined depending on whether or not there is a memory indicating that a connection failure has occurred. If there is no memory of the occurrence of a connection failure (YES in S2), detection of the connection failure is started (S3). If there is a memory that a connection failure has occurred (NO in S2), the process advances to S12, which will be described later.

回路遮断器１がオン状態で接続不良を検出したら（Ｓ３でＹＥＳ）、次に遮断選択部１８の設定内容に従って異なる動作を行う。遮断選択部１８が遮断を選択（Ｓ４でＹＥＳ）していたら、電路Ｌを遮断（Ｓ５）する。更に信号出力部１６から接続不良発生信号を出力させて外部に通知し、接続不良発生場所に対応する表示部１４を表示動作させる（Ｓ６）。その後、記憶部１７に接続不良発生を記憶（Ｓ７）させて、制御は終了する。
遮断選択部１８が遮断を選択していなければ（Ｓ４でＮＯ）、接続不良を検知しても遮断を実施せず外部に通知し、接続不良発生場所に対応する表示部１４を表示動作させて（Ｓ６）、記憶部１７に接続不良検出を記憶（Ｓ７）させて、制御は終了する。 If a connection failure is detected while the circuit breaker 1 is in the on state (YES in S3), then different operations are performed according to the settings of the interrupt selection section 18. If the cutoff selection unit 18 selects cutoff (YES in S4), the electric circuit L is cut off (S5). Further, a connection failure occurrence signal is output from the signal output section 16 to notify the outside, and the display section 14 corresponding to the location where the connection failure has occurred is operated for display (S6). Thereafter, the occurrence of the connection failure is stored in the storage unit 17 (S7), and the control ends.
If the disconnection selection unit 18 does not select disconnection (NO in S4), even if a connection failure is detected, the disconnection is not performed and the outside is notified, and the display unit 14 corresponding to the location where the connection failure has occurred is operated for display. (S6), the connection failure detection is stored in the storage unit 17 (S7), and the control ends.

そして、Ｓ２において記憶部１７に接続不良発生の記憶が残っていたら（Ｓ２でＮＯ）、遮断選択部１８の設定内容に従って制御する。遮断選択部１８が遮断を選択していたら（Ｓ１２でＹＥＳ）、電路Ｌを遮断（Ｓ１３）して終了する。即ち、オン操作された操作レバー６がトリップ位置に移動し、投入操作が拒否される。
尚、遮断選択部１８が遮断を選択していなければ（Ｓ１２でＮＯ）、遮断せず終了する。この時、回路遮断器１はオン状態が継続される。 Then, in S2, if the memory of the occurrence of a connection failure remains in the storage unit 17 (NO in S2), control is performed according to the settings of the cutoff selection unit 18. If the cutoff selection unit 18 has selected cutoff (YES in S12), the electric circuit L is cut off (S13) and the process ends. That is, the operating lever 6 that has been turned on moves to the trip position, and the closing operation is rejected.
Note that if the cutoff selection unit 18 does not select cutoff (NO in S12), the process ends without cutoff. At this time, the circuit breaker 1 continues to be in the on state.

一方、回路遮断器１がオフ状態であれば（Ｓ１でＮＯ）、リセットボタン１９の操作が可能となる。表示部１４が表示動作中（Ｓ８）、即ち接続不良の発生場所を表示中であれば、記憶部１７に接続不良発生の記憶が残っていることに因るため、表示を停止させるにはリセット操作を必要とする。
そのため、リセットボタン１９が操作される（Ｓ９でＹＥＳ）と、記憶部１７に記憶されている接続不良発生の記憶が消去され（Ｓ１０）、同時に表示部１４の表示が終了する（Ｓ１１）。こうしてリセットすることで、操作レバー６がオン操作されると新たな接続不良検出動作に入ることができる。
尚、表示部１４が表示状態に無ければ、検出記憶は残っていないためリセット操作する必要はない。 On the other hand, if the circuit breaker 1 is in the off state (NO in S1), the reset button 19 can be operated. If the display unit 14 is displaying (S8), that is, displaying the location where the connection failure has occurred, this is because the storage unit 17 still has the memory of the connection failure occurrence, so it must be reset to stop the display. Requires operation.
Therefore, when the reset button 19 is operated (YES in S9), the memory of the occurrence of a connection failure stored in the storage section 17 is erased (S10), and at the same time, the display on the display section 14 ends (S11). By resetting in this manner, a new connection failure detection operation can be started when the operating lever 6 is turned on.
Note that if the display section 14 is not in the display state, there is no detection memory remaining, so there is no need to perform a reset operation.

このように、接続不良発生場所を示す表示部１４を備えるため、接続不良が発生したら、その発生端子を認識でき、対処し易い。
また、電路Ｌが遮断されても表示部１４は機能を維持して表示を継続できる。然も発光表示するため、遮断した原因を把握し易いし、接続不良場所を容易に特定できる。
更に、接続不良が発生しても通知のみ実施して遮断動作しないよう設定できるため、接続不良が発生しても、発生する熱は比較的小さくて済む通電電流が比較的小さい負荷が接続された回路遮断器１の場合、過度の遮断動作を防ぐことができる。
また、接続不良発生を外部に通知する信号出力部１６を備えるため、回路遮断器１が確認し難い場所にあっても、接続不良の発生を認識し易く、放置する事態を防止できる。
加えて、接続不良を検出すると接続不良の発生を記憶し、リセットボタン１９が操作されるまで、表示部１４の表示を維持するため、接続不良発生を操作者に確実に認識させることができ、接続不良が放置されるような事態を防止できる。 As described above, since the display unit 14 is provided to indicate the location where a connection failure occurs, if a connection failure occurs, the terminal where the connection failure occurs can be recognized and it is easy to deal with it.
Moreover, even if the electric circuit L is cut off, the display section 14 can maintain its function and continue displaying. Moreover, since it emits light, it is easy to understand the cause of the interruption, and the location of the connection failure can be easily identified.
Furthermore, even if a connection failure occurs, it can be set to only notify you and not to shut off the device, so even if a connection failure occurs, the heat generated is relatively small.Loads with relatively small currents are connected. In the case of the circuit breaker 1, excessive breaking operation can be prevented.
Moreover, since the circuit breaker 1 is provided with a signal output section 16 that notifies the outside of the occurrence of a connection failure, even if the circuit breaker 1 is located in a place where it is difficult to see, the occurrence of a connection failure can be easily recognized and a situation where the circuit breaker 1 is left unattended can be prevented.
In addition, when a connection failure is detected, the occurrence of the connection failure is memorized and the display on the display unit 14 is maintained until the reset button 19 is operated, so that the operator can reliably recognize the occurrence of the connection failure. It is possible to prevent a situation where a connection failure is left unattended.

尚、上記実施形態では、３線から成る電路Ｌに適用される回路遮断器１を説明しているが、電路Ｌが２線から成る構成であれば、電源側／負荷側共に２端子から成る回路遮断器で良く、３端子を備えた回路遮断器と同様に接続不良を検知したらその場所を表示する構成を容易に得ることができる。
また、記憶部１７は停電が発生しても記憶を保持する不揮発性メモリとすると良く、電源を復帰した際に表示が継続されるため、接続不良発生場所がわからなくなる事態を防止できる。
更に、接続不良が発生した場所の表示を、端子毎に配置した３つの相表示部１４ａで行っているが、発生相の表示を発光色或いは点滅等の発光形態を変えることで実施すれば１つのＬＥＤで表示させることもできる。 In addition, in the above embodiment, the circuit breaker 1 is explained that is applied to the electric line L consisting of three wires, but if the electric line L is composed of two wires, both the power supply side and the load side are composed of two terminals. A circuit breaker may be used, and like a circuit breaker with three terminals, it is possible to easily obtain a configuration that displays the location of a poor connection when it is detected.
Further, the storage unit 17 is preferably a non-volatile memory that retains memory even if a power outage occurs, and since the display continues when the power is restored, it is possible to prevent a situation where the location of the connection failure is unknown.
Furthermore, the location where a connection failure has occurred is displayed using the three phase display sections 14a arranged for each terminal, but if the occurrence phase can be displayed by changing the luminous color or the luminous form such as blinking, it will be possible to It can also be displayed using one LED.

１・・回路遮断器、２・・電源側端子、３・・負荷側端子、４・・３相電源、１１・・接点部、１２・・遮断部（遮断手段）、１３・・接続不良検出部、１４・・表示部、１４ａ・・相表示部、１４ｂ・・検出位置表示部、１５・・制御部（遮断制御部、表示制御部）、１６・・信号出力部、１７・・記憶部、１８・・遮断選択部（遮断禁止設定部）、２０・・電源部。 1...Circuit breaker, 2...Power side terminal, 3...Load side terminal, 4...3-phase power supply, 11...Contact part, 12...Block part (blocking means), 13...Poor connection detection Parts, 14...Display part, 14a...Phase display part, 14b...Detection position display part, 15...Control part (cutoff control part, display control part), 16...Signal output part, 17...Storage part , 18... Cutoff selection section (blocking prohibition setting section), 20... Power supply section.

Claims (5)

電路の過電流を検知する過電流検知手段と、前記電路に設けた接点部を開操作して遮断動作させる遮断手段と、電源側端子及び負荷側端子のうちの何れかの端子で接続不良が発生したら、それを検出する接続不良検出部と、接続不良が発生したら前記遮断手段を遮断動作させる遮断制御部とを備えた回路遮断器であって、
接続不良発生場所を示す表示部を有し、
前記表示部の表示により、接続不良が発生した端子を認識できることを特徴とする回路遮断器。 An overcurrent detection means for detecting an overcurrent in the electric circuit, a disconnection means for opening and disconnecting a contact provided in the electric circuit, and a connection failure in either the power supply side terminal or the load side terminal. A circuit breaker comprising a connection failure detection unit that detects a connection failure when it occurs, and a disconnection control unit that causes the disconnection means to perform a disconnection operation when a connection failure occurs, the circuit breaker comprising:
It has a display section that shows the location of the connection failure,
A circuit breaker characterized in that a terminal in which a connection failure has occurred can be recognized by the display on the display section. 前記表示部は、前記接点部の電源側から電源の供給を受けて発光表示することを特徴とする請求項１記載の回路遮断器。 2. The circuit breaker according to claim 1, wherein the display section receives power from the power supply side of the contact section and performs a light-emitting display. 前記接続不良検出部が接続不良を検出しても、遮断動作を禁止する遮断禁止設定部を有し、
遮断禁止設定された状態で接続不良が発生したら、前記表示部が発生場所を表示するが電路は遮断されないことを特徴とする請求項１又は２記載の回路遮断器。 a disconnection prohibition setting unit that prohibits a disconnection operation even if the connection failure detection unit detects a connection failure;
3. The circuit breaker according to claim 1, wherein if a connection failure occurs in a state where disconnection is prohibited, the display section displays the location where the connection failure occurs, but the electrical path is not interrupted. 接続不良発生を外部に通知する信号出力部を有することを特徴とする請求項１乃至３の何れかに記載の回路遮断器。 4. The circuit breaker according to claim 1, further comprising a signal output section for notifying the outside of the occurrence of a connection failure. 接続不良発生を記憶する記憶部と、前記接続不良発生の記憶を消去するリセットボタンと、接続不良発生を受けて表示動作している表示部の表示を、前記リセットボタンが操作されて前記接続不良発生の記憶が消去されるまで継続させる表示制御部とを有することを特徴とする請求項１乃至４の何れかに記載の回路遮断器。 a memory unit that stores the occurrence of a connection failure; a reset button that erases the memory of the connection failure occurrence; 5. The circuit breaker according to claim 1, further comprising a display control section that causes the display to continue until the memory of the occurrence is erased.
JP2022042946A 2022-03-17 2022-03-17 circuit breaker Pending JP2023136986A (en)

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