JPH01295616A - Breaker - Google Patents

Breaker

Info

Publication number
JPH01295616A
JPH01295616A JP63125317A JP12531788A JPH01295616A JP H01295616 A JPH01295616 A JP H01295616A JP 63125317 A JP63125317 A JP 63125317A JP 12531788 A JP12531788 A JP 12531788A JP H01295616 A JPH01295616 A JP H01295616A
Authority
JP
Japan
Prior art keywords
current
breaker
alarm
power
line
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
Application number
JP63125317A
Other languages
Japanese (ja)
Inventor
Yoshio Arai
新井 淑夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Engineering Ltd
Original Assignee
NEC Engineering Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Engineering Ltd filed Critical NEC Engineering Ltd
Priority to JP63125317A priority Critical patent/JPH01295616A/en
Publication of JPH01295616A publication Critical patent/JPH01295616A/en
Pending legal-status Critical Current

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  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To notify the interruption of a power source beforehand by detecting that previously set or more current flows to a breaker, and by generating the alarm of an abnormal state. CONSTITUTION:When a breaker fundamental-section 3 connected to the feed source of voltage is kept ON, then from the points A1, A2 of a power line to an excess current detecting circuit 1, power used by the excess current detecting circuit 1 itself is fed. By this power, current flowing to the points A3, A4 of the power line is measured 11, and when the current exceeds previously set current, then alarm signal is created 12, and an alarm 2 is permitted to buzz. By the buzzing of the alarm 2, a part of a load connected to a plug socket or the like is separated, and power interruption is prevented from being generated due to the OFF-state of the breaker fundamental-section 3. As a result, the volatile memory of a computer is prevented from being extinguished.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、許容電流を越える電流が電力用の線路に流れ
たときに該線路を遮断することにより、該線路に電力を
供給する電源装置や該電流を消費する負荷を過電流から
保護するブレーカに関する。
Detailed Description of the Invention (Industrial Application Field) The present invention provides a power supply device that supplies power to a power line by cutting off the line when a current exceeding an allowable current flows through the line. The invention also relates to a breaker that protects a load that consumes the current from overcurrent.

(従来の技術と課題) 従来のブレーカは、許容電流以上の電流が一定時間以上
流れると、予告なしに無条件に線路を遮断するようにな
っている。このように、従来のブレーカは、何の予告も
無しに電力線路を遮断するから、該電力線路から電力を
受けている電気機器の利用者はそれまで行なっていた作
業を途中で強制的に中断させられ、また作業の内容によ
ってはまた最初からやり直さねばならないという問題点
があった0例えば、強制的に遮断された電力線路にコン
ピュータが接続されていると、コンピュータのRAMな
どの揮発性メモリーの記憶内容が消滅してしまう、この
ような場合には何時間もかけて作成したプログラムやデ
ータを最初から作り直さなければならない。
(Prior Art and Problems) Conventional breakers unconditionally cut off the line without prior notice if a current exceeding the allowable current flows for a certain period of time or more. In this way, conventional breakers cut off power lines without any prior notice, forcing users of electrical equipment receiving power from the power lines to forcibly interrupt the work they were doing. For example, if a computer is connected to a power line that has been forcibly cut off, the computer's volatile memory such as RAM may be damaged. In such a case, where the memory contents are erased, the programs and data that took hours to create must be recreated from scratch.

(課題を解決するための手段) 前述の課題を解決するために本発明が提供する手段は、
許容電流以上の電流が線路に流れると該線路を遮断する
ブレーカであって、前記線路の電流が前記許容電流を越
える過電流であるとき通電流検出信号を生成する過電流
検出回路と、前記過電流検出回路が前記過電流検出信号
を生成しているとき異常発生の通報をする警報器とを含
むことを特徴とする。
(Means for Solving the Problems) Means provided by the present invention to solve the above-mentioned problems are as follows:
an overcurrent detection circuit that interrupts the line when a current exceeding the allowable current flows through the line, and generates a current flow detection signal when the current in the line is an overcurrent exceeding the allowable current; The present invention is characterized in that it includes an alarm that notifies the occurrence of an abnormality when the current detection circuit generates the overcurrent detection signal.

(実施例) 次に実施例を挙げ本発明を一層詳しく説明する。(Example) Next, the present invention will be explained in more detail with reference to Examples.

第1図は本発明の一実施例の構成を示すブロック図、第
2図は第1図実施例における過電流検出回路の詳細を示
す回路ブロック図、第3図はその実施例の作動を概念的
に示す図、第4図は第1図実施例における電流と回路が
遮断されるまでの時間との関係を示す特性図である。第
1図において、ブレーカ基本部3は従来から知られてい
る通常のサーキットブレーカに相当する。
Fig. 1 is a block diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a circuit block diagram showing details of the overcurrent detection circuit in the embodiment of Fig. 1, and Fig. 3 is a conceptual diagram of the operation of the embodiment. FIG. 4 is a characteristic diagram showing the relationship between the current and the time until the circuit is cut off in the embodiment shown in FIG. In FIG. 1, the breaker basic part 3 corresponds to a conventionally known normal circuit breaker.

まず、第1図を参照してこの実施例を説明する。First, this embodiment will be explained with reference to FIG.

ブレーカ基本部3の回路が接続されているときには、A
 r 、 A *から過電流検出回路1へこの過電流検
出回路1自体で用いるための電力を供給する。
When the circuit of breaker basic part 3 is connected, A
Power for use in the overcurrent detection circuit 1 itself is supplied from r and A* to the overcurrent detection circuit 1.

この電力により過電流検出回路1はA s 、 A 4
を流れる電流を検出する。過電流検出回路1は予めセッ
トされているブレーカ基本部3の許容電流と検出電流と
を比較し、許容電流以上の電流が流れている場合には、
直ちに警報信号を出力するとともに、検出電流が許容電
流からどれだけ超えているかに応じた時間の経過の後に
警報信号を停止する。警報器2は警報信号を受けている
期間に警報ブザーを鳴らし続ける。
This power causes the overcurrent detection circuit 1 to detect A s , A 4
detect the current flowing through the The overcurrent detection circuit 1 compares the preset allowable current of the breaker basic part 3 with the detected current, and if a current exceeding the allowable current is flowing,
An alarm signal is immediately output, and the alarm signal is stopped after a period of time has elapsed depending on how much the detected current exceeds the allowable current. The alarm device 2 continues to sound the alarm buzzer while receiving the alarm signal.

第2図に示すように、過電流検出回路1は電流測定部1
1と警報信号生成部12とからなっている。
As shown in FIG. 2, the overcurrent detection circuit 1 includes a current measuring section 1.
1 and an alarm signal generating section 12.

電流測定部11は第1図のA s 、 A 4に流れる
線路電流を検出し、その情報を警報信号生成部12に送
る。警報信号生成部12は電流測定部11から、As。
The current measuring section 11 detects the line current flowing through A s and A 4 in FIG. 1, and sends the information to the alarm signal generating section 12. The alarm signal generation unit 12 receives As from the current measurement unit 11.

A1間を流れている線路電流の情報を受けとり、予めセ
ットされている閾値電流と比較し、線路電流が許容電流
を越えているか否かを検出する。越えていた場合は、そ
の旨の注意を促す為に、警報信号を生成し警報器2を鳴
動させる。
Information about the line current flowing between A1 is received and compared with a preset threshold current to detect whether the line current exceeds the allowable current. If the limit is exceeded, an alarm signal is generated and the alarm 2 is sounded in order to call attention to this fact.

仮に、この実施例のブレーカ基本部3の許容電流を26
?Aとすると、警報信号生成部12には26?Aの閾値
をセットしておく、今、第3図で示す8点までブレーカ
の基本部3の許容電流以内で電流を消費中に新たに別の
機器を線路に接続したところ、許容電流以上のb点まで
電流が流れたとする0通常のブレーカでは、e点に至る
時間まで電流を流し続けると、ブレーカの安全装置が働
き、回路が遮断されるが(点線)、本実施例のブレーカ
の場合、電流がb点に達した時点(正確には2ΦAのラ
インを越えた瞬間)で警報器2が鳴動するから、e点に
至る前に新たに使用した機器の電源を切って電流の流れ
を許容電流以内(C点→d点)に戻すことができる。
Suppose that the allowable current of the breaker basic part 3 of this embodiment is 26
? Assuming A, the alarm signal generation unit 12 has 26? Set the threshold value of A. Now, while the current is being consumed within the allowable current of the basic part 3 of the breaker up to the 8 points shown in Figure 3, when another device is connected to the line, the current exceeds the allowable current. Assume that current flows up to point b.0 With a normal breaker, if the current continues to flow until it reaches point e, the breaker's safety device will operate and the circuit will be interrupted (dotted line), but in the case of the breaker of this example , Alarm 2 will sound when the current reaches point b (more precisely, the moment it crosses the 2ΦA line), so turn off the power to the newly used equipment and stop the current flow before reaching point e. The current can be returned to within the allowable current (point C → point d).

第4図は、ブレーカ基本部3の許容範囲以上の電流が流
れた場合、回路が切断されるまでの時間と電流の相関を
示す図である。短絡したような過電流が流れた場合は瞬
時に、多少許容電流を越えた程度では、ある程度時間が
経過してから回路が遮断されるようになっている。
FIG. 4 is a diagram showing the correlation between the time until the circuit is disconnected and the current when a current exceeding the allowable range of the breaker basic part 3 flows. If an overcurrent such as a short circuit occurs, the circuit will be shut off instantly, but if the current exceeds the allowable limit, the circuit will be shut off after a certain amount of time has passed.

また、警報器2は第3図で示されるように、許容電流以
上の電流が流れている問鳴動するから、鳴動している時
間も線路電流がどれだけ許容電流を越えているかによっ
て変化する。従って第3図で示すb−e間の時間も、第
4図で示す曲線のように変化する。
Furthermore, as shown in FIG. 3, the alarm 2 sounds whenever a current exceeding the permissible current is flowing, so the duration of the sounding also changes depending on how much the line current exceeds the permissible current. Therefore, the time between be and e shown in FIG. 3 also changes like the curve shown in FIG. 4.

(発明の効果) 以上に説明したように本発明のブレーカには異常発生の
通報をする為の警報器を組み込んでいる。
(Effects of the Invention) As explained above, the breaker of the present invention incorporates an alarm for reporting the occurrence of an abnormality.

そこで、本発明のブレーカでは、許容電流を越えて電力
線路に電流が流れた場合、警報器が鳴動することによっ
て電力線路が遮断されることが予測できるから、許容電
流以上の電流が流れて電力線路が突然に遮断されること
を未然に防止できる。
Therefore, with the breaker of the present invention, if a current exceeding the allowable current flows through the power line, it can be predicted that the power line will be cut off by sounding an alarm, so that the current exceeding the allowable current will flow and the power will be cut off. This can prevent the line from being suddenly cut off.

したがって、本発明のブレーカの採用によりコンピュー
タにおける揮発性メモリの記憶内容が消滅というような
事故が軽減できる。
Therefore, by employing the breaker of the present invention, accidents such as erasure of the contents of volatile memory in a computer can be reduced.

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

第1図は本発明の一実施例の構成を示すブロック図、第
2図は第1図実施例における過電流検出回路の詳細を示
す回路ブロック図、第3図は第1図実施例の作動を概念
的に示す図、第4図はその実施例における電流と回路が
遮断されるまでの時間との関係を示す図である。 1・・・過電流検出回路、2・・・警報器、3・・・ブ
レーカ基本部、11・・・電流測定部、12・・・警報
信号生成部。
Fig. 1 is a block diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a circuit block diagram showing details of the overcurrent detection circuit in the embodiment of Fig. 1, and Fig. 3 is an operation of the embodiment of Fig. 1. FIG. 4 is a diagram conceptually showing the relationship between the current and the time until the circuit is cut off in the embodiment. DESCRIPTION OF SYMBOLS 1... Overcurrent detection circuit, 2... Alarm, 3... Breaker basic part, 11... Current measurement part, 12... Alarm signal generation part.

Claims (1)

【特許請求の範囲】[Claims] 許容電流以上の電流が線路に流れると該線路を遮断する
ブレーカにおいて、前記線路の電流が前記許容電流を越
える過電流であるとき過電流検出信号を生成する過電流
検出回路と、前記過電流検出回路が前記過電流検出信号
を生成しているとき異常発生の通報をする警報器とを含
むことを特徴とするブレーカ。
A breaker that interrupts a line when a current exceeding an allowable current flows through the line, an overcurrent detection circuit that generates an overcurrent detection signal when the current in the line is an overcurrent exceeding the allowable current, and the overcurrent detection circuit. A breaker comprising: an alarm that notifies the occurrence of an abnormality when the circuit is generating the overcurrent detection signal.
JP63125317A 1988-05-23 1988-05-23 Breaker Pending JPH01295616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63125317A JPH01295616A (en) 1988-05-23 1988-05-23 Breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63125317A JPH01295616A (en) 1988-05-23 1988-05-23 Breaker

Publications (1)

Publication Number Publication Date
JPH01295616A true JPH01295616A (en) 1989-11-29

Family

ID=14907115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63125317A Pending JPH01295616A (en) 1988-05-23 1988-05-23 Breaker

Country Status (1)

Country Link
JP (1) JPH01295616A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04121340U (en) * 1991-04-19 1992-10-29 大同電機工業株式会社 overcurrent alarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04121340U (en) * 1991-04-19 1992-10-29 大同電機工業株式会社 overcurrent alarm

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