JPS6248220A - Leak breaker - Google Patents
Leak breakerInfo
- Publication number
- JPS6248220A JPS6248220A JP18601185A JP18601185A JPS6248220A JP S6248220 A JPS6248220 A JP S6248220A JP 18601185 A JP18601185 A JP 18601185A JP 18601185 A JP18601185 A JP 18601185A JP S6248220 A JPS6248220 A JP S6248220A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- level
- earth leakage
- zero
- current transformer
- 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.)
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- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔左業上の利用分野〕
この発明は、漏電センサーとして圧′Eαす゛レーを用
いた漏電しゃ断器に関するものであるっ〔従来の技術〕
第4図、第5図、第6図を柑いて従来の漏電しゃ断器を
説明する。第4図において、漏電しゃ断器(1)は、開
閉機構部(2)、演算処理装置(3a)、タロツク発生
器(3b) 、プログラムメモリ(3C)、データメモ
リ(3d)、人出力ボート(3e)からなるマイクロコ
ンピュータ−(3)、電磁装置(4)、零相変流器(8
)、電圧増幅器(91、1)0、アンド素子からなる論
理回路(1)1、a’aで構成されている。[Detailed Description of the Invention] [Field of Application] This invention relates to an earth leakage breaker using a pressure Eα relay as an earth leakage sensor. [Prior Art] Figs. 4 and 5. , a conventional earth leakage breaker will be explained with reference to FIG. In Fig. 4, the earth leakage breaker (1) includes an opening/closing mechanism section (2), an arithmetic processing unit (3a), a tarok generator (3b), a program memory (3C), a data memory (3d), and a human output boat ( 3e) consisting of a microcomputer (3), an electromagnetic device (4), and a zero-phase current transformer (8
), a voltage amplifier (91, 1) 0, a logic circuit (1) 1 consisting of an AND element, and a'a.
次に漏電しゃ断器の動作を第4図を用いて説明する。こ
の従来の漏電しゃ断器は、高速動作させる場合と、遅延
動作させる場合でそハぞれ別々に設けら九た電子回路(
9,■)、 (10,12)が必要である。Next, the operation of the earth leakage breaker will be explained using FIG. 4. This conventional earth leakage breaker requires nine separate electronic circuits for high-speed operation and delayed operation.
9,■), (10,12) are required.
電流は、電源側端子(6a)〜(6C)→開閉機構部(
2)の接触子→零相変流器(8)→負荷側端子(7a)
〜(7C)に流れる。The current flows from the power supply side terminals (6a) to (6C) → opening/closing mechanism part (
2) contact → zero-phase current transformer (8) → load side terminal (7a)
~(7C).
地絡事故が発生すると、零相変流器(8)は各相の電流
バランスがくずれ地絡電流の大きさに相当した磁束によ
り鉄心が励磁さiに次巻線に起電力を生じる。電圧増幅
器(9)叫は地絡事故が発生すると零相変流器(8)か
らの信号を増幅し、しきい値以上の電圧を出力する。When a ground fault occurs, the current balance of each phase of the zero-phase current transformer (8) is disrupted, and the iron core is excited by a magnetic flux corresponding to the magnitude of the ground fault current, generating an electromotive force in the next winding. When a ground fault occurs, the voltage amplifier (9) amplifies the signal from the zero-phase current transformer (8) and outputs a voltage above the threshold value.
論理回路Oυ、(1zは、アンド素子として機能し、入
力端子がしきい値以上(「1」レベル)の電圧であれば
「1」レベルの電圧を出力し、入力電圧がしきい値以’
F(rOJレベル)であればrOJレベルの電圧を出力
する。この従来の漏電しゃ断器l″i第5図。The logic circuit Oυ, (1z functions as an AND element, and outputs a voltage at the "1" level if the voltage at the input terminal is above the threshold ("1"level);
If F (rOJ level), a voltage at rOJ level is output. FIG. 5 shows this conventional earth leakage breaker l″i.
第6図に示すように調整つまみNlN2を有しており、
それぞれ30mA、LOOmA、200mAの位置に設
定した状態において地絡事故が発生し、設定値以上の地
絡電流が流入すれば高速動作(0,1秒以内)を行い、
一方調整つまみN、を遅延動作の位置に設定し、調整つ
まみN2を列えばLOOmAの位置に設定した状態にお
いて、地絡事故が発生し。As shown in FIG. 6, it has an adjustment knob NlN2,
If a ground fault occurs with the settings set at 30mA, LOOmA, and 200mA, and a ground fault current exceeding the set value flows in, high-speed operation (within 0.1 seconds) will be performed.
On the other hand, a ground fault occurred when the adjustment knob N was set to the delay operation position and the adjustment knob N2 was set to the LOOmA position.
地絡電流がL OOmA以上でろれば、遅延動作(0,
3秒)を行なう。すなわち、漏電しゃ断器を高速動作(
0,1秒以内)させる場合には第1の論理回路圓からの
出力は「1」レベル、第2の論理回路02からの出力は
rlJレベルでマイクロコンピュータ−(3)の人出力
ボート(3e)に人力する。一方漏電しや断器を遅延動
作(0,3秒)させる場合は、第1の論理回路からの出
力電圧は「0」レベル、第2の論理P路からの出力゛重
圧ハ「1」レベルでマイクロコンピュータ−(3)の人
出力ボート(3e)に人力する。マイクロコンピュータ
(3)は人力信号が「1」汀1」のとき、演算処理によ
り高速動作を行い1人力信号がrOJ、rLJのとき、
演算処理により遅延動作を行い、人出力ボートにしゃ断
信号を出力する。電磁装置(4)はしゃ断信号を受信す
ると作動して電磁石部に係合している開閉装置を駆動し
て事故電流をしゃ断するっ
〔発明が解決しようとする問題点〕
しかしながら、従来の漏電しゃ断器は1以上述べたよう
にマイクロコンピュータ−による制御装置を必要とし、
構造が複雑で高価となる欠点を有していたつこの発明は
以上のような問題点に鑑みてなされたものでアリ、構造
が簡単で安価な漏電しゃ断器を提供することを目的とす
る。If the ground fault current is not less than LOOmA, delay operation (0,
3 seconds). In other words, the earth leakage breaker operates at high speed (
0.1 seconds), the output from the first logic circuit 02 is at the "1" level, and the output from the second logic circuit 02 is at the rlJ level. ). On the other hand, in the case of delay operation (0.3 seconds) of earth leakage or disconnection, the output voltage from the first logic circuit is at the "0" level, and the output from the second logic P path is at the "1" level. Then, the microcomputer (3) is manually powered to the human output boat (3e). When the human input signal is "1", the microcomputer (3) operates at high speed through arithmetic processing, and when the human input signal is rOJ, rLJ,
Performs a delay operation through calculation processing and outputs a cutoff signal to the human output boat. When the electromagnetic device (4) receives a cutoff signal, it operates and drives the switchgear engaged with the electromagnet to cut off the fault current. [Problem to be solved by the invention] However, the conventional earth leakage cutoff As mentioned above, the device requires a microcomputer-based control device,
The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an earth leakage breaker which has a simple structure and is inexpensive.
上記の目的を達成するために、この発明の構成を実施列
に対応する図を用いて説明する。In order to achieve the above object, the configuration of the present invention will be explained using figures corresponding to implementation sequences.
第1図は、この発明に係る漏電しゃ断器の構成を示す図
、第2図は漏電センサを示す図である。FIG. 1 is a diagram showing the configuration of an earth leakage breaker according to the present invention, and FIG. 2 is a diagram showing an earth leakage sensor.
第1図に示す漏電しゃ断器においては、電圧増幅器(9
)9曲、論理回路(社)、(12、マイクロコンピュー
タ−(3)のかわりに、圧電リレーQD、電圧変換器の
を設けである。In the earth leakage breaker shown in Fig. 1, a voltage amplifier (9
) 9 songs, Logic Circuit Co., Ltd., (12, microcomputer - instead of (3), a piezoelectric relay QD and a voltage converter are provided.
第2図(a)および(bcにおいて、c!υは抵抗R2
、コンデンサCからなる時定回路をスイッチ接片(2L
a5)(21a4)に直列に接続した圧電リレー、(8
)は各相の導体を貫通して設置された零相変流器、@は
スイッチ接片(21a5X21a4)の「人」、「切」
状態を検出して「0」レベ# 、 rLJレベルに対応
する信号を出力する電圧変換器、(4)は電磁装置であ
る。In Figure 2 (a) and (bc), c!υ is the resistance R2
, a time constant circuit consisting of a capacitor C is connected to a switch contact (2L
a5) Piezoelectric relay connected in series to (21a4), (8
) is the zero-phase current transformer installed through the conductor of each phase, @ is the "person" and "off" of the switch contact (21a5X21a4)
A voltage converter (4) is an electromagnetic device that detects the state and outputs a signal corresponding to the "0" level # and the rLJ level.
次に作用を第2図(a)および(b)、第3図を用いて
説明する。第2図(a)は圧電リレー■Dの「人」状態
を示す側面図、第2図(b)は圧mリレーt21)の「
切」状態を示す側面図である。Next, the operation will be explained using FIGS. 2(a) and (b) and FIG. 3. Fig. 2(a) is a side view showing the piezoelectric relay ■D in the ``human'' state, and Fig. 2(b) is the ``human'' state of the piezoelectric relay t21).
FIG. 3 is a side view showing the "off" state.
第2図(a)において回路に地絡事故が発生し地絡電流
が流入すると零相変流器(8)の2次側電圧が増大し、
圧電セラミックの薄板(2LalX21a2)を接着る
と接片(21a4)(21a5)が離反し、コンデンサ
Cになる特性により時間と共に減少してゆく。抵抗R2
レベルmレベルの電圧を出力する。In Fig. 2(a), when a ground fault occurs in the circuit and ground fault current flows in, the secondary voltage of the zero-phase current transformer (8) increases,
When the piezoelectric ceramic thin plate (2LalX21a2) is bonded, the contact pieces (21a4) (21a5) separate and become a capacitor C, which causes the contact pieces to decrease over time. Resistance R2
Outputs level m level voltage.
なお圧電リレー+214に駆動電圧が印加された後(零
相変流器(8)の2次側電圧増大)に接片(21a4)
(21a5)が開き、電圧変換器ツより出力信号が出力
されるまでの時間は、抵抗Cと並列に抵抗を数μΩ〜■
を入れることで0.2秒〜40時間の遅延時間電流が流
れはじめてから第3図に示すような特性にしたがって一
定時間経過後作動しく遅延動作)、遅延′菅路が接続さ
れていない場合、地絡電流が流れるとただちに動作を行
う(高速動作)っ電圧変換器ツの出力は圧電リレーt2
1)が「人」状態から「切」状態に切換わると「0」レ
ベルから「1」レベルに変わり、電磁装置(4)を作動
させ開閉装置を「開」状態にし1回路への通電をしゃ断
するっ
〔実施列〕
第1図はこの発明の実施列を示す図である。Note that after the drive voltage is applied to the piezoelectric relay +214 (the secondary side voltage of the zero-phase current transformer (8) increases), the contact piece (21a4)
(21a5) opens and the output signal is output from the voltage converter.
By inserting a delay time of 0.2 seconds to 40 hours, the circuit will operate after a certain period of time has elapsed according to the characteristics shown in Figure 3 after the current starts flowing.If the delay line is not connected, The output of the voltage converter t2 is a piezoelectric relay that operates immediately when a ground fault current flows (high-speed operation).
When 1) switches from the "human" state to the "off" state, it changes from the "0" level to the "1" level, which activates the electromagnetic device (4) to turn the switchgear into the "open" state and energize one circuit. Shut off [Implementation row] FIG. 1 is a diagram showing an implementation row of this invention.
第1図において漏電しゃ断器+1)は、周知のトグルリ
ンク機構によって接点の開閉を行う開閉機構、漏電引外
し機能、電流をしゃ断する際に発生するアークを消滅さ
せる消弧装置、電線や導体を接続する端子、回路を開閉
する接続子およびこれらを一体にして組込むモールドケ
ースにより構成されている。開閉機構部(2)は、固定
接触子(2a)〜(2C)及び可動接触子(2d)〜(
2E)を備えており、速入および速切機能、操作ハンド
ルをオン位置に拘束した状態においても、引外し動作を
さまたげないトリップフリー機能、および3極間時投入
同時しゃ断を行う共通引き外し機能を備えたもので。In Fig. 1, the earth leakage breaker +1) includes an opening/closing mechanism that opens and closes contacts using a well-known toggle link mechanism, an earth leakage tripping function, an arc extinguishing device that extinguishes the arc that occurs when cutting off the current, and an electric wire or conductor. It consists of terminals for connection, connectors for opening and closing the circuit, and a molded case in which these are integrated. The opening/closing mechanism section (2) includes fixed contacts (2a) to (2C) and movable contacts (2d) to (
2E), it is equipped with quick-on and quick-off functions, a trip-free function that does not disturb the tripping operation even when the operating handle is locked in the on position, and a common tripping function that allows simultaneous closing and disconnection at the time of three poles. It is equipped with.
後述の電磁装置(4)と係合関係にある。零相変流器(
8)は各相の導体を貫通して配置さrしているう圧電リ
レー(21)は第3図(a)および(b)に示すように
接片(21a5)を保持した金属板(21a6)の両側
に圧電セラミックの薄板(21a L)c21a2)を
接着した圧電バイモルフからなり、圧電セラミックの両
端に電圧を印加することにより接片(21a4)(21
a5)の「人」「切」状態の切換えをおこなうっスナッ
プスプリング(21)3)は接片(21a5)の接触を
確実にするためのものである。電圧変換器@は圧電リレ
ーt21j Or人」「切」状態に対応する「0」レベ
ル「1」レベルの電圧を出力するためのものである。It is in an engaging relationship with an electromagnetic device (4) which will be described later. Zero-phase current transformer (
8) is arranged through the conductor of each phase.The piezoelectric relay (21) is a metal plate (21a6) holding a contact piece (21a5) as shown in Fig. 3(a) and (b). ) is made of a piezoelectric bimorph with piezoelectric ceramic thin plates (21a L) c21a2) bonded to both sides of the contact piece (21a4) (21a2) by applying a voltage to both ends of the piezoelectric ceramic.
The snap spring (21) 3) which performs switching between the "on" and "off" states of a5) is for ensuring the contact of the contact piece (21a5). The voltage converter @ is for outputting a voltage of the "0" level and "1" level corresponding to the "off" state of the piezoelectric relay t21j.
電磁装置(4)は電圧変換器@の出力が「1」レベルに
なると作動して前述のように保合関係にある開閉機構部
(2)を旧」状態に切り換える。The electromagnetic device (4) is activated when the output of the voltage converter @ reaches the "1" level, and switches the opening/closing mechanism (2), which is in a locking relationship as described above, to the "old" state.
次に動作を説明する。Next, the operation will be explained.
第1図において電流は電源側端子(6a)〜(6C)→
開閉機構部(2)の接触子(2a)〜(2f)→零相変
流器(8)を貫通→負荷側端子(7a)〜(7C)に流
れる。この回路に地絡事故が発生し地絡電流が流れた場
合け、零相変流器(8)の2次側電圧が増大する。この
電圧に前述のように圧電リレー(社)を駆動するための
駆動電圧として用いられ、圧電リレー圓が動作して接片
(21)4X21a5)は「切」状態となる。電圧変換
器@の出力は接片(2La4X2La5)が「人」状態
から「切」状態に切換わると「0」レベルから「1」レ
ベルに変わる。電磁装置(41)−f電圧変換器ツの「
1」レベルの出力によって作動し、係合する開閉機構部
(2)が濶」状態から「開」状態に切り変わり地絡電流
がしゃ断さnる。In Figure 1, the current is from power supply side terminals (6a) to (6C) →
The current flows from the contacts (2a) to (2f) of the opening/closing mechanism section (2) to the zero-phase current transformer (8) to the load side terminals (7a) to (7C). If a ground fault occurs in this circuit and a ground fault current flows, the secondary voltage of the zero-phase current transformer (8) increases. This voltage is used as a driving voltage for driving the Piezoelectric Relay Co., Ltd. as described above, and the piezoelectric relay circle operates and the contact piece (21) 4X21a5) is in the "off" state. The output of the voltage converter @ changes from the "0" level to the "1" level when the contact piece (2La4X2La5) switches from the "person" state to the "off" state. Electromagnetic device (41)-f voltage converter
It is activated by the output of level 1, and the engaged opening/closing mechanism section (2) changes from the open state to the open state, and the ground fault current is cut off.
動速動作と遅延動作の切換は不図示のスイッチにより、
前記抵抗R2コンデンサCからなる遅延回路を接続する
か否かという操作により簡単に切換えることができる。Switching between dynamic speed operation and delay operation is performed using a switch (not shown).
This can be easily switched by connecting or not connecting the delay circuit consisting of the resistor R2 and capacitor C.
以上説明したように、この発明によればマイクロコンピ
ュータ−を用いずに、高速動作および遅延動作の切換え
および制御を行うことができ、構造の簡単で安価な漏電
しゃ断器を提供することができる。As described above, according to the present invention, switching and control between high-speed operation and delayed operation can be performed without using a microcomputer, and an earth leakage breaker with a simple structure and low cost can be provided.
第1図はこの発明に係る漏電しゃ断器の実施列を示す図
、第2図(a) (b)は圧電リレーの構造および動作
を示す側面図、第3図は遅延回路の特性を示す図、第4
図は従来の漏電しゃ断器を示す図、第5図および第6図
は従来の漏電しゃ断器の調整つまみの位置を示す図であ
る0
図中、(2)は開閉装置、(8)は零相変流器、 +2
1)は圧電リレー、■は電圧変換器、(4)は電磁装置
であるつ代理人 弁理士 大 岩 増 雄
第1図
/〕
「ニー□−□−一□−□−□
第2図(G)
第2図(b)
第3図
8寺 i′凸 t□
第4図
声Fig. 1 is a diagram showing the implementation row of the earth leakage breaker according to the present invention, Fig. 2 (a) and (b) are side views showing the structure and operation of the piezoelectric relay, and Fig. 3 is a diagram showing the characteristics of the delay circuit. , 4th
The figure shows a conventional earth leakage breaker, and Figures 5 and 6 show the positions of the adjustment knobs of the conventional earth leakage breaker. In the figure, (2) is a switchgear, and (8) is a zero. Phase current transformer, +2
1) is a piezoelectric relay, ■ is a voltage converter, and (4) is an electromagnetic device. Agent Patent Attorney Masuo Oiwa Figure 1/] G) Figure 2 (b) Figure 3 8 Temple i' Convex t□ Figure 4 Voice
Claims (2)
リレー、 前記圧電リレーの接点信号を電圧信号に変換する電圧変
換器、 前記電圧変換器の出力により開閉機構部を作動させる開
閉装置と を具備したことを特徴とする漏電しや断器。(1) a zero-phase current transformer that detects a ground fault current; a piezoelectric relay that uses the electromotive force generated in the zero-phase current transformer as a driving voltage; a voltage converter that converts the contact signal of the piezoelectric relay into a voltage signal; An electric leakage or disconnection switch comprising a switching device that operates a switching mechanism section by the output of the voltage converter.
定回路を備えたことを特徴とする特許請求の範囲第1項
記載の漏電しや断器。(2) The leakage or disconnection device according to claim 1, wherein the piezoelectric relay is equipped with a time-fixed circuit consisting of a capacitor and a resistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18601185A JPS6248220A (en) | 1985-08-23 | 1985-08-23 | Leak breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18601185A JPS6248220A (en) | 1985-08-23 | 1985-08-23 | Leak breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6248220A true JPS6248220A (en) | 1987-03-02 |
Family
ID=16180814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18601185A Pending JPS6248220A (en) | 1985-08-23 | 1985-08-23 | Leak breaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6248220A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6404105B1 (en) * | 1999-06-04 | 2002-06-11 | Norbert Beyrard France | Contactor/circuit breaker activated by a piezoelectric motor |
US9480615B2 (en) | 2012-11-09 | 2016-11-01 | MAQUET GmbH | Transport carriage for transport of a patient support and/or an operating table column of an operating table |
-
1985
- 1985-08-23 JP JP18601185A patent/JPS6248220A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6404105B1 (en) * | 1999-06-04 | 2002-06-11 | Norbert Beyrard France | Contactor/circuit breaker activated by a piezoelectric motor |
US9480615B2 (en) | 2012-11-09 | 2016-11-01 | MAQUET GmbH | Transport carriage for transport of a patient support and/or an operating table column of an operating table |
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