JP5081467B2 - Electronic breaker - Google Patents

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JP5081467B2
JP5081467B2 JP2007035900A JP2007035900A JP5081467B2 JP 5081467 B2 JP5081467 B2 JP 5081467B2 JP 2007035900 A JP2007035900 A JP 2007035900A JP 2007035900 A JP2007035900 A JP 2007035900A JP 5081467 B2 JP5081467 B2 JP 5081467B2
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energization
display
current
unit
electronic breaker
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JP2008204631A (en
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啓介 吉川
知行 澤田
雅隆 神田
弘忠 東浜
英司 岩見
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、通電状況を表示する電子式ブレーカに関する。   The present invention relates to an electronic breaker that displays an energization state.

従来の電子式ブレーカにおいては、漏電による異常が発生すると、ボタン型の表示器によって漏電が表示されたが、漏電以外の過電流や短絡等の他の異常が発生しても、異常内容が表示されず対応に時間を要した。   In the conventional electronic breaker, when an abnormality due to leakage occurs, the leakage is displayed on the button type display. However, even if other abnormalities such as overcurrent or short circuit other than leakage occur, the details of the abnormality are displayed. It took time to respond.

また、既存の漏電ブレーカに後付けし、検出した電流や電圧を基に演算を行い、通電正常時の通電情報を表示する通電情報計測装置が知られている(例えば、特許文献1参照)。   Further, an energization information measuring device is known that is retrofitted to an existing earth leakage breaker, performs calculation based on the detected current and voltage, and displays energization information when energization is normal (see, for example, Patent Document 1).

また、検出した電流や電圧を基に演算を行い、通電正常時の通電情報を表示器に出力する電子式ブレーカが知られている(例えば、特許文献2参照)。   There is also known an electronic breaker that performs calculations based on detected currents and voltages and outputs energization information when energization is normal to a display (for example, see Patent Document 2).

しかしながら、上記特許文献1に示されるような通電情報計測装置においては、漏電ブレーカの漏電表示部と、通電情報計測装置の表示部の2つの表示部があるので、装置が大型化し、表示も分かりにくい。また、上記特許文献1に示されるような通電情報計測装置や上記特許文献2に示されるような電子式ブレーカにおいては、異常発生時に異常内容を表示しようとすると、別の表示装置が必要となり、装置が大型化する。また、上記特許文献1の通電情報計測装置及び特許文献2の電子式ブレーカとも電源オフの状態が分かりにくい。
特開平11−8930号公報 特開2002−95152号公報
However, in the energization information measuring device as shown in the above-mentioned Patent Document 1, since there are two display units, the leakage display unit of the leakage breaker and the display unit of the energization information measurement device, the device is enlarged and the display can be understood. Hateful. In addition, in the energization information measuring device as shown in Patent Document 1 and the electronic breaker as shown in Patent Document 2, if an abnormality content is to be displayed when an abnormality occurs, another display device is required. Larger equipment. In addition, it is difficult to understand the power-off state of both the energization information measuring device of Patent Document 1 and the electronic breaker of Patent Document 2.
Japanese Patent Laid-Open No. 11-8930 JP 2002-95152 A

本発明は、上記従来の問題を解決するためになされたものであり、電源オフ時や通電異常時にも、通電正常時と同じ表示器によって通電情報を見易く表示し、かつ小型の電子式ブレーカを提供することを目的とする。   The present invention has been made in order to solve the above-described conventional problems. Even when the power is off or when the power is abnormal, the current display is easily displayed by the same display as when the power is normal, and a small electronic breaker is provided. The purpose is to provide.

上記目的を達成するために請求項1の発明は、負荷に流れる電流を検出する電流検出部と、前記電流検出部による検出電流に基づいて通電異常を判断し、通電異常時には電源からの受電を遮断するための引き外し信号を出力する異常判断部と、前記異常判断部から出力される引き外し信号に基づいて受電を遮断する引き外し機構と、通電情報を表示する表示ユニットと、を備えた電子式ブレーカにおいて、前記表示ユニットは、前記異常判断部の動作により前記引き外し機構を動作させた状態においてトリップの原因である漏電、過電流、短絡、及び中性線欠相の内のいずれか1つの異常原因を文字、数字又は記号により表示すると共に、正常な通電状態時には前記電流検出部による検出電流を基に各相電流値、平均電流値、及び漏洩電流値を含む通電情報を、時間毎に又はユーザの表示切替スイッチの操作によって切り替えて表示し、電源オフ時には無表示になるように表示が切り替わるものである。 In order to achieve the above object, the invention according to claim 1 is characterized in that a current detection unit for detecting a current flowing through a load and a current supply abnormality are determined based on a current detected by the current detection unit. An abnormality determination unit that outputs a trip signal for blocking, a trip mechanism that blocks power reception based on a trip signal output from the abnormality determination unit, and a display unit that displays energization information. In the electronic breaker, the display unit is any one of leakage, overcurrent, short circuit, and neutral wire phase loss that causes a trip in a state where the trip mechanism is operated by the operation of the abnormality determination unit. one cause of the abnormality characters, and displays the number or symbol, the phase current values on the basis of the detected current by the current detecting unit at the time of normal conductive state, the average current value, and the leakage current value Energization information including, display is switched by the operation of the display switch of the or each user time, in which the display so that no display is switched when the power is shut off.

請求項2の発明は、請求項1に記載の電子式ブレーカにおいて、前記電流検出部による検出電流を演算処理することにより全相の最大電流値を求め、前記表示ユニットに表示させるものである。   According to a second aspect of the present invention, in the electronic breaker according to the first aspect, a maximum current value of all phases is obtained by calculating the current detected by the current detection unit and displayed on the display unit.

請求項3の発明は、請求項1又は請求項2に記載の電子式ブレーカにおいて、前記表示ユニットは、通電正常時に前記電流検出部による検出電流に基づいて複数種類の電流値を切替表示できるようにしたものである。   According to a third aspect of the present invention, in the electronic breaker according to the first or second aspect, the display unit is capable of switching and displaying a plurality of types of current values based on the current detected by the current detection unit when energization is normal. It is a thing.

請求項の発明は、請求項1乃至請求項のいずれか一項に記載の電子式ブレーカにおいて、前記表示ユニットは、前記異常判断により通電異常と判断されたとき、異常原因の表示を行なうと共に、通電正常時とは異なる背景色に切り替わるものである。 According to a fourth aspect of the present invention, in the electronic breaker according to any one of the first to third aspects, the display unit displays the cause of the abnormality when it is determined that the energization is abnormal by the abnormality determination. At the same time, it switches to a background color different from that in normal energization.

請求項の発明は、請求項1乃至請求項のいずれか一項に記載の電子式ブレーカにおいて、定格電流を選択設定するための可変部を備え、この可変部による設定に応じて前記異常判断部は、その判断の判定基準を変更すると共に、設定された定格電流に基づく信号を前記表示ユニットに出力し、定格電流を表示させるものである。 According to a fifth aspect of the present invention, in the electronic breaker according to any one of the first to fourth aspects, the electronic breaker includes a variable portion for selectively setting a rated current, and the abnormality is determined according to the setting by the variable portion. The determination unit changes the determination criterion and outputs a signal based on the set rated current to the display unit to display the rated current.

請求項1の発明によれば、一つの表示ユニットに通電異常時だけでなく、正常時や電源オフ時もそれぞれに対応した表示がなされるので、通電状況が分かり易い。また、一つの表示ユニットであるので電子式ブレーカを小型化することができる。また、電源オフが明確になり、通電状況が分かり易い。 According to the first aspect of the present invention, since the display corresponding to each of the display units is performed not only when the energization is abnormal but also when the power is off or when the power is off, the energization state is easily understood. Moreover, since it is one display unit, an electronic breaker can be reduced in size. In addition, it becomes clear that the power is off, and the energization status is easy to understand.

請求項2の発明によれば、通電状況が分かり、電流の使用量に余裕が有るか否かを直ぐに判断することができる。   According to the second aspect of the present invention, it is possible to know the energization state and immediately determine whether or not there is a surplus in the amount of current used.

請求項3の発明によれば、複数種類の通電情報が表示されるので、通電状況が分かり易い。   According to the invention of claim 3, since a plurality of types of energization information is displayed, the energization status is easy to understand.

請求項の発明によれば、通電異常の発生が明確になり、通電状況が分かり易いので、的確な対応を行なうことができる。 According to the invention of claim 4 , the occurrence of the energization abnormality becomes clear and the energization state is easy to understand, so an appropriate response can be performed.

請求項の発明によれば、容易かつ確実に変更された定格電流値を把握することができるので、定格電流値の誤認識を防ぐことができ、安全性が向上する。また、シール添付等による定格電流値の表示の手間を省くことができる。 According to the invention of claim 5 , since the rated current value that has been changed easily and reliably can be grasped, erroneous recognition of the rated current value can be prevented, and safety is improved. Moreover, the trouble of displaying the rated current value by attaching a seal or the like can be saved.

本発明の第1の実施形態に係る電子式ブレーカについて図面を参照して説明する。図1は、電子式ブレーカの構成を示す。電子式ブレーカ1は、電源2から負荷3への配線上に、電流、電圧、及び漏電等を検出する電流検出部41と、駆動電力を取得する電源取得部42とを備えている。また、電子式ブレーカ1は、電流検出部41からの検出信号に基づいて通電状況を判断する異常判断部5と、異常判断部5からの引き外し信号に基づいて電源2からの受電を遮断する引き外しユニット6と、異常判断部5からの表示信号に基づいて通電状況を表示する、表示ユニット7とを備えている。   An electronic breaker according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of an electronic breaker. The electronic breaker 1 includes a current detection unit 41 that detects current, voltage, electric leakage, and the like and a power supply acquisition unit 42 that acquires drive power on the wiring from the power source 2 to the load 3. Further, the electronic breaker 1 interrupts power reception from the power source 2 based on the abnormality determination unit 5 that determines the energization state based on the detection signal from the current detection unit 41 and the trip signal from the abnormality determination unit 5. A tripping unit 6 and a display unit 7 for displaying an energization state based on a display signal from the abnormality determination unit 5 are provided.

異常判断部5は、電流検出部41による検出信号に基づいて通電状況を示す表示信号を出力すると共に、過電流や漏電等の通電異常を判断し、通電異常と判断したときは、引き外し信号及び異常状態に応じた信号を出力する。   The abnormality determination unit 5 outputs a display signal indicating the energization state based on the detection signal from the current detection unit 41, determines an energization abnormality such as overcurrent or leakage, and when it determines that the energization is abnormal, a trip signal And a signal corresponding to the abnormal state is output.

図2(a)は、電子式ブレーカ1の通電正常時の外観を、図2(b)は、通電異常時の外観を、図2(c)は、通電異常時の表示ユニット7の表示例を示す。図3(a)(b)(c)は表示ユニット7の表示例であって、それぞれ通電正常時、通電異常時、及び電源オフ時の表示を示す。表示ユニット7は、自己保持型可変表示素子として、例えば、電子ペーパ71を有し、電源がオフになっても表示を保持する。通電正常時には、スイッチレバー61がオン位置である上部に位置し、電子ペーパ71は異常判断部5からの表示信号に基づき、電流値等の通電情報を表示する。通電異常時には、スイッチレバー61はトリップして中段部に移動し、電子ペーパ71は表示の背景色を正常時と異ならせると共に、異常状態に応じた異常記号を表示する。また、漏電時には、電子ペーパ71は、他の通電異常時とは異なる背景色によって表示する。電源オフ時には電子ペーパ71は無表示になる。   2A shows an external appearance when the electronic breaker 1 is normally energized, FIG. 2B shows an external appearance when the energization is abnormal, and FIG. 2C shows a display example of the display unit 7 when the energization is abnormal. Indicates. FIGS. 3A, 3B, and 3C are display examples of the display unit 7, and show displays when the energization is normal, when the energization is abnormal, and when the power is off, respectively. The display unit 7 has, for example, electronic paper 71 as a self-holding variable display element, and holds the display even when the power is turned off. When the energization is normal, the switch lever 61 is positioned at the upper position, which is the on position, and the electronic paper 71 displays energization information such as a current value based on the display signal from the abnormality determination unit 5. When the energization is abnormal, the switch lever 61 trips and moves to the middle stage, and the electronic paper 71 changes the background color of the display from the normal state and displays an abnormal symbol corresponding to the abnormal state. Further, at the time of electric leakage, the electronic paper 71 displays with a background color different from that at the time of other abnormal energization. When the power is turned off, the electronic paper 71 is not displayed.

電子ペーパ71の近傍には、各異常記号が示す異常状態の説明文72が記されている。異常記号は、例えば記号E1が漏電を、記号E2が過電流を、記号E3が短絡を、記号E4が中性線欠相を示す。   In the vicinity of the electronic paper 71, a description 72 of an abnormal state indicated by each abnormal symbol is written. For example, the symbol E1 indicates an electric leakage, the symbol E2 indicates an overcurrent, the symbol E3 indicates a short circuit, and the symbol E4 indicates a neutral wire open phase.

上記のように構成された電子式ブレーカ1の動作について説明する。電流検出部41は電流や漏電等を検出し、検出信号を異常判断部5へ出力する。異常判断部5は、検出信号や予め定められた定格電流値等に基づいて演算を行い、過電流や漏電等の通電異常を判断する。異常判断部5は、正常な通電状態と判断したときには、電流値と定格電流値等の表示信号を表示ユニット7に出力する。異常判断部5は、過電流や漏電等の通電異常が発生したと判断したときは、引き外し信号を引き外しユニット6に出力して、電源2からの受電を遮断させると共に、異常状態に応じた信号を表示ユニット7に出力する。   The operation of the electronic breaker 1 configured as described above will be described. The current detection unit 41 detects current, electric leakage, etc., and outputs a detection signal to the abnormality determination unit 5. The abnormality determination unit 5 performs a calculation based on a detection signal, a predetermined rated current value, or the like, and determines an energization abnormality such as overcurrent or leakage. The abnormality determination unit 5 outputs a display signal such as a current value and a rated current value to the display unit 7 when determining that the current is in a normal energized state. When the abnormality determination unit 5 determines that an energization abnormality such as overcurrent or electric leakage has occurred, the abnormality determination unit 5 outputs a trip signal to the unit 6 to cut off the power reception from the power source 2 and respond to the abnormal state. The signal is output to the display unit 7.

表示ユニット7は、通電正常時には、異常判断部5からの表示信号に基づき、電流値と定格電流値等の通電情報を電子ペーパ71に表示する。通電異常時には、異常判断部5からの異常状態に応じた信号に基づいて、異常状態に対応する異常記号と定格電流値を電子ペーパ71に表示し、この時、引き外しユニット6によって受電が遮断されても表示を保持する。そして、ブレーカの再投入や、リセットボタン(図示なし)により異常状態が除去され、異常判断部5から復旧信号を受けるまで異常表示を保持する。   The display unit 7 displays energization information such as a current value and a rated current value on the electronic paper 71 based on the display signal from the abnormality determination unit 5 when the energization is normal. When the power supply is abnormal, the abnormality symbol corresponding to the abnormal state and the rated current value are displayed on the electronic paper 71 based on a signal corresponding to the abnormal state from the abnormality determination unit 5, and at this time, the power reception is cut off by the tripping unit 6. Even if it is displayed, the display is retained. Then, the abnormal state is removed by re-inserting the breaker or by a reset button (not shown), and the abnormality display is held until a recovery signal is received from the abnormality determination unit 5.

上述したように本実施形態の電子式ブレーカ1によれば、一つの表示ユニットに通電異常時だけでなく、正常時や電源オフ時もそれぞれに対応した表示がなされるので、通電状況が分かり易い。また、一つの表示ユニットであるので電子式ブレーカを小型化することができる。   As described above, according to the electronic breaker 1 of the present embodiment, not only when the power supply is abnormal, but also when the power is off or when the power is off, a single display unit is displayed correspondingly. . Moreover, since it is one display unit, an electronic breaker can be reduced in size.

通電異常により受電が遮断されても、電子ペーパ71により異常表示が保持され、的確な対応を行なうことができると共に、表示による消費電力を抑制することができる。また、異常状態に対応した異常表示が表示されることから、例えば、過電流、短絡、漏電等のトリップ原因が現場で直ぐに明確に分かるので、的確な対応が取れ、安全となる。また、異常表示が文字、数字又は記号により表示されるので、表示ユニット7に省スペースで異常内容を表示することができると共に、異常状態に対応する文字等の説明が近傍に記されているので、トリップ原因を直ぐに判断することができる。   Even if the power reception is interrupted due to the energization abnormality, the abnormality display is held by the electronic paper 71, and an appropriate response can be performed, and the power consumption due to the display can be suppressed. In addition, since an abnormality display corresponding to the abnormal state is displayed, for example, the cause of a trip such as overcurrent, short circuit, or electric leakage can be immediately and clearly understood on site, so that an appropriate countermeasure can be taken and safety can be achieved. In addition, since the abnormal display is displayed with letters, numbers or symbols, the contents of the abnormality can be displayed on the display unit 7 in a space-saving manner, and the explanation of the characters corresponding to the abnormal state is written in the vicinity. The cause of the trip can be immediately determined.

通電異常時の電子ペーパ71の背景色が通電正常時とは異なるので、通電異常の発生が明確になり、通電状況が分かり易いので、的確な対応を行なうことができる。特に漏電時には他の通電異常時の背景色と異なり、安全上の問題の大きい漏電を直ぐに認識することができるので、的確な対応を行なうことができ、安全性が向上する。また、電源オフ時には無表示になり、通電正常時や通電異常時と表示が異なるので、電源オフが分かり易い。   Since the background color of the electronic paper 71 when the energization is abnormal is different from that when the energization is normal, the occurrence of the energization is clarified and the energization state is easy to understand, so an appropriate response can be performed. In particular, unlike a background color at the time of other energization abnormalities at the time of electric leakage, it is possible to immediately recognize an electric leakage having a large safety problem, so that an appropriate countermeasure can be taken and safety is improved. In addition, no display is displayed when the power is turned off, and the display is different from when the power supply is normal or when the power supply is abnormal.

異常判断部5は、通電正常時に、電流検出部41による検出電流を演算処理することにより、全相の最大電流値を求め、電子ペーパ71に表示させるようにしてもよい。最大電流値と定格電流値との比較により、通電状況が分かり、電流の使用量に余裕が有るか否かを直ぐに判断することができる。   The abnormality determination unit 5 may obtain the maximum current value of all phases by performing arithmetic processing on the current detected by the current detection unit 41 during normal energization and display it on the electronic paper 71. By comparing the maximum current value and the rated current value, the energization state can be understood, and it can be immediately determined whether there is a margin in the amount of current used.

表示ユニット7は、通電正常時に、電流検出部41による検出信号に基づいて、各相電流値、平均電流値、漏洩電流値等の通電情報を、時間毎に又はユーザの表示切替スイッチ(図示なし)の操作によって切り替えて表示するようにしてもよい。種々の通電情報が表示されるので、通電状況が分かり易い。   The display unit 7 displays current-carrying information such as each phase current value, average current value, and leakage current value at each time or by a user display changeover switch (not shown) based on a detection signal from the current detection unit 41 when the current is normally supplied. ) May be switched and displayed. Since various energization information is displayed, the energization status is easy to understand.

本実施形態の電子式ブレーカ1において、電子ペーパ71の通電正常時と通電異常時の背景色を同じにしてもよい。このことにより、電子ペーパ71を動作させるプログラムの作成が容易になる。   In the electronic breaker 1 of the present embodiment, the background color when the electronic paper 71 is normally energized and when the energization is abnormal may be the same. This facilitates creation of a program for operating the electronic paper 71.

本発明の第2の実施形態による電子式ブレーカについて説明する。図4は電子式ブレーカの構成を示す。本実施形態の電子式ブレーカ1は、蓄電部8を備えている。異常判断部5は、電源オフ時及び停電等による電源の供給停止時に、蓄電部8の電力により表示ユニット7に、電源オフに対応した表示として、例えば全面を青色に表示する。電源オフや停電等になっても電力が供給されるので、電源オフ等に対応した表示を行なうことができ、電源オフが分かり易い。   An electronic breaker according to a second embodiment of the present invention will be described. FIG. 4 shows the configuration of the electronic breaker. The electronic breaker 1 of this embodiment includes a power storage unit 8. The abnormality determination unit 5 displays, for example, the entire surface in blue as a display corresponding to the power-off on the display unit 7 by the power of the power storage unit 8 when the power is turned off or when the power supply is stopped due to a power failure or the like. Since power is supplied even when the power is turned off or a power failure occurs, display corresponding to the power off or the like can be performed, and the power off is easily understood.

本発明の第3の実施形態による電子式ブレーカについて説明する。図5は電子式ブレーカの外観を示す。本実施形態の電子式ブレーカ1は、表示ユニット7に漏電を報知するLED73を備えている。異常判断部5は、漏電が発生したと判断すると、引き外し信号を引き外しユニット6に出力し、漏電信号を表示ユニット7に出力して、電子ペーパ71に漏電を表示させると共にLED73を点灯させる。漏電を直ぐに認識することができるので、的確な対応を取ることができ、安全性が向上する。   An electronic breaker according to a third embodiment of the present invention will be described. FIG. 5 shows the appearance of the electronic breaker. The electronic breaker 1 of the present embodiment includes an LED 73 that notifies the display unit 7 of a leakage. If the abnormality determination unit 5 determines that a leakage has occurred, it outputs a trip signal to the trip unit 6 and outputs a leak signal to the display unit 7 to display the leak on the electronic paper 71 and turn on the LED 73. . Since the electric leakage can be recognized immediately, an appropriate response can be taken and safety is improved.

本発明の第4の実施形態による電子式ブレーカについて説明する。図6は電子式ブレーカの外観を示す。本実施形態における電子式ブレーカ1は、ユーザが定格電流を選択するための可変部74を備えている。可変部74が押操作されると、定格電流が予め定められた複数の値に順に変更される。ユーザが可変部74の操作によって定格電流を変更すると、異常判断部5は、通電異常の判断基準を変更し、設定された定格電流に基づく信号を電子ペーパ71に出力し、定格電流値を表示する。図7は従来の電子式ブレーカのスイッチレバーの外観を示す。従来の電子式ブレーカ101では、定格電流値をスイッチレバー161の頂部Aや下方Bにシール等により表示していたが、本実施形態の電子式ブレーカ1によれば、容易かつ確実に変更された定格電流値を把握することができるので、定格電流値の誤認識を防ぐことができ、安全性が向上する。また、シール添付等による定格電流値の表示の手間を省くことができる。   An electronic breaker according to a fourth embodiment of the present invention will be described. FIG. 6 shows the external appearance of the electronic breaker. The electronic breaker 1 in this embodiment includes a variable unit 74 for the user to select a rated current. When the variable portion 74 is pushed, the rated current is changed in order to a plurality of predetermined values. When the user changes the rated current by operating the variable unit 74, the abnormality determination unit 5 changes the determination criterion for the abnormality in energization, outputs a signal based on the set rated current to the electronic paper 71, and displays the rated current value. To do. FIG. 7 shows the appearance of a switch lever of a conventional electronic breaker. In the conventional electronic breaker 101, the rated current value is indicated by a seal or the like on the top A or the lower part B of the switch lever 161. However, according to the electronic breaker 1 of the present embodiment, the rated current value is easily and reliably changed. Since the rated current value can be grasped, erroneous recognition of the rated current value can be prevented, and safety is improved. Moreover, the trouble of displaying the rated current value by attaching a seal or the like can be saved.

なお、本発明は、上記各種実施形態の構成に限られず、発明の趣旨を変更しない範囲で種々の変形が可能である。例えば、表示ユニット7は自己保持型可変表示素子として、メモリ性コレスティックLCDを有してもよい。また、通電情報とは、電流値、定格電流値、電力値、及び漏洩電流値等の通電に関する種々の情報をいう。   In addition, this invention is not restricted to the structure of the said various embodiment, A various deformation | transformation is possible in the range which does not change the meaning of invention. For example, the display unit 7 may have a memory-type cholastic LCD as a self-holding variable display element. The energization information refers to various information related to energization such as a current value, a rated current value, a power value, and a leakage current value.

本発明の第1の実施形態に係る電子式ブレーカの構成図。The block diagram of the electronic breaker which concerns on the 1st Embodiment of this invention. (a)は同電子式ブレーカの通電正常時の斜視図、(b)は同電子式ブレーカの通電異常時の斜視図、(c)は同電子式ブレーカの表示ユニットの表示例を示す斜視図。(A) is a perspective view when the electronic breaker is normally energized, (b) is a perspective view when the electronic breaker is abnormally energized, and (c) is a perspective view showing a display example of the display unit of the electronic breaker. . (a)は同電子式ブレーカの表示ユニットの通電正常時の表示例を示す図、(b)は通電異常時の表示例を示す図、(c)は電源オフ時の表示例を示す図。(A) is a figure which shows the example of a display at the time of normal electricity supply of the display unit of the same electronic breaker, (b) is a figure which shows the example of a display at the time of abnormal electricity supply, (c) is the figure which shows the example of a display at the time of power-off. 本発明の第2の実施形態に係る電子式ブレーカの構成図。The block diagram of the electronic breaker which concerns on the 2nd Embodiment of this invention. 本発明の第3の実施形態に係る電子式ブレーカの斜視図。The perspective view of the electronic breaker which concerns on the 3rd Embodiment of this invention. 本発明の第4の実施形態に係る電子式ブレーカの斜視図。The perspective view of the electronic breaker which concerns on the 4th Embodiment of this invention. 従来の電子式ブレーカのスイッチレバーの斜視図。The perspective view of the switch lever of the conventional electronic breaker.

符号の説明Explanation of symbols

1 電子式ブレーカ
2 電源
3 負荷
41 電流検出部
5 異常判断部
6 引き外しユニット(引き外し機構)
7 表示ユニット
72 説明文
74 可変部

DESCRIPTION OF SYMBOLS 1 Electronic breaker 2 Power supply 3 Load 41 Current detection part 5 Abnormality judgment part 6 Trip unit (tripping mechanism)
7 Display unit 72 Explanation 74 Variable part

Claims (5)

負荷に流れる電流を検出する電流検出部と、前記電流検出部による検出電流に基づいて通電異常を判断し、通電異常時には電源からの受電を遮断するための引き外し信号を出力する異常判断部と、前記異常判断部から出力される引き外し信号に基づいて受電を遮断する引き外し機構と、通電情報を表示する表示ユニットと、を備えた電子式ブレーカにおいて、
前記表示ユニットは、前記異常判断部の動作により前記引き外し機構を動作させた状態においてトリップの原因である漏電、過電流、短絡、及び中性線欠相の内のいずれか1つの異常原因を文字、数字又は記号により表示すると共に、正常な通電状態時には前記電流検出部による検出電流を基に各相電流値、平均電流値、及び漏洩電流値を含む通電情報を、時間毎に又はユーザの表示切替スイッチの操作によって切り替えて表示し、電源オフ時には無表示になるように表示が切り替わることを特徴とする電子式ブレーカ。
A current detection unit that detects a current flowing through the load, an abnormality determination unit that determines an energization abnormality based on a current detected by the current detection unit, and outputs a tripping signal for interrupting power reception from the power source when the energization is abnormal In an electronic breaker comprising a tripping mechanism that cuts off power reception based on a tripping signal output from the abnormality determination unit, and a display unit that displays energization information,
The display unit is configured to detect any one of an abnormality cause among a leakage, an overcurrent, a short circuit, and a neutral wire phase loss that is a cause of a trip in a state where the trip mechanism is operated by an operation of the abnormality determination unit. Displayed with letters, numbers, or symbols, and in a normal energization state , energization information including each phase current value, average current value, and leakage current value based on the current detected by the current detection unit is displayed every time or by the user. An electronic breaker characterized in that the display is switched by an operation of a display changeover switch, and the display is switched so that it is not displayed when the power is turned off.
前記電流検出部による検出電流を演算処理することにより全相の最大電流値を求め、前記表示ユニットに表示させることを特徴とする請求項1に記載の電子式ブレーカ。   2. The electronic breaker according to claim 1, wherein a maximum current value of all phases is obtained by calculating a current detected by the current detection unit, and displayed on the display unit. 前記表示ユニットは、通電正常時に前記電流検出部による検出電流に基づいて複数種類の電流値を切替表示できるようにしたことを特徴とする請求項1又は請求項2に記載の電子式ブレーカ。   3. The electronic breaker according to claim 1, wherein the display unit is configured to switch and display a plurality of types of current values based on a current detected by the current detection unit when energization is normal. 前記表示ユニットは、前記異常判断により通電異常と判断されたとき、異常原因の表示を行なうと共に、通電正常時とは異なる背景色に切り替わることを特徴とする請求項1乃至請求項のいずれか一項に記載の電子式ブレーカ。 It said display unit when said is judged to be abnormal by the determining energization abnormalities, with performing display of abnormality cause any one of claims 1 to 3, characterized in that switching to a different background color from the time of energization normal The electronic breaker according to one item. 定格電流を選択設定するための可変部を備え、この可変部による設定に応じて前記異常判断部は、その判断の判定基準を変更すると共に、設定された定格電流に基づく信号を前記表示ユニットに出力し、定格電流を表示させることを特徴とする請求項1乃至請求項のいずれか一項に記載の電子式ブレーカ。 A variable unit for selectively setting a rated current is provided, and the abnormality determination unit changes a determination criterion for the determination according to the setting by the variable unit, and a signal based on the set rated current is supplied to the display unit. The electronic breaker according to any one of claims 1 to 4 , wherein the electronic breaker is output and a rated current is displayed.
JP2007035900A 2007-02-16 2007-02-16 Electronic breaker Expired - Fee Related JP5081467B2 (en)

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