JPH0828182B2 - Earth leakage circuit breaker - Google Patents
Earth leakage circuit breakerInfo
- Publication number
- JPH0828182B2 JPH0828182B2 JP17759989A JP17759989A JPH0828182B2 JP H0828182 B2 JPH0828182 B2 JP H0828182B2 JP 17759989 A JP17759989 A JP 17759989A JP 17759989 A JP17759989 A JP 17759989A JP H0828182 B2 JPH0828182 B2 JP H0828182B2
- Authority
- JP
- Japan
- Prior art keywords
- phase current
- zero
- current transformer
- earth leakage
- primary conductor
- 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.)
- Expired - Lifetime
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、漏電遮断器の容器内に収納され主回路の
零相電流を検出して検出信号を該容器内の漏電トリップ
機構へ出力する漏電検出部の構成に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention detects a zero-phase current of a main circuit housed in a container of an earth leakage breaker and outputs a detection signal to an earth leakage trip mechanism in the container. The present invention relates to the structure of an electric leakage detector.
第７図に漏電遮断器の容器内に収容される従来の漏電
検出部の構成と配置の一例を示す。この例では漏電検出
部101は零相変流器６と、零相変流器６を貫通する，漏
電遮断器（以下遮断器と略称する）の極数と同数の１次
導体５と、零相変流器６の２次側に検出された電流を増
幅するICなどが搭載されたプリント板を合成樹脂ベース
に取り付けてなるプリント板組立て８とから構成され、
プリント板組立て８から出力された電流が漏電トリップ
機構102のトリップコイル102aに入力されてアーマチュ
ア102bが吸引され、この吸引動作が、過電流で動作する
電磁トリップ機構100のアーマチュア３を介して開閉機
構105に伝達され、開閉機構105内の掛合い部の爪を引き
外し、遮断機構104が動作して主回路の電流が遮断され
る。FIG. 7 shows an example of the configuration and arrangement of a conventional earth leakage detection unit housed in the container of the earth leakage breaker. In this example, the leakage detection unit 101 includes a zero-phase current transformer 6, primary conductors 5 penetrating through the zero-phase current transformer 6 and having the same number as the number of poles of a leakage circuit breaker (hereinafter abbreviated as circuit breaker), and zero. And a printed board assembly 8 in which a printed board on which an IC that amplifies the detected current is mounted is attached to a secondary side of the phase current transformer 6 and which is mounted on a synthetic resin base.
The current output from the printed board assembly 8 is input to the trip coil 102a of the earth leakage trip mechanism 102, and the armature 102b is attracted. This attracting action is performed by the armature 3 of the electromagnetic trip mechanism 100 that operates with overcurrent. This is transmitted to 105, the claw of the engaging portion in the opening / closing mechanism 105 is pulled out, and the interruption mechanism 104 operates to interrupt the current in the main circuit.
第８図に前記漏電検出部101における主回路部分の構
成を示す。零相変流器６を貫通する１次導体５は、可撓
撚銅線に絶縁テープを巻いて形成され、これを遮断器の
極数と同数、零相変流器を貫通させた後、それぞれの両
端部を電磁トリップ機構のトリップコイル１と端子板７
とにスポットろう付けする。このようにして電磁トリッ
プ機構100と漏電検出部101の主回路部分とが一体化され
た状態で遮断器の容器を構成するモールドケース11（第
７図）にねじを用いて固定され、つづいてプリント板組
立て８がモールドケース11にねじ止めされる。FIG. 8 shows the configuration of the main circuit portion of the earth leakage detector 101. The primary conductor 5 penetrating the zero-phase current transformer 6 is formed by winding an insulating tape around a flexible twisted copper wire, and after passing this through the zero-phase current transformer by the same number as the number of poles of the circuit breaker, Both ends of each are the trip coil 1 and the terminal board 7 of the electromagnetic trip mechanism.
And spot braze to. In this way, the electromagnetic trip mechanism 100 and the main circuit portion of the earth leakage detection unit 101 are integrated with each other and fixed to the mold case 11 (Fig. 7) forming the container of the circuit breaker with screws, The printed board assembly 8 is screwed to the mold case 11.
このように構成される漏電検出部における問題点は次
の通りである。すなわち、電磁トリップ機構と、可撓性
のある長い１次導体が零相変流器を貫通した漏電検出部
の主回路部分とが一体化された状態で形状が一定せず、
電磁トリップ機構のヨーク２をモールドケース11に形成
された溝に１個ずつ挿入して位置決めする作業が比較的
困難となる。また、電磁トリップ機構は定格の種類が多
く、顧客の要求に合わせてそのつどスポットろう付けを
行うため、作業能率が悪く、要求の変化に即応できず、
遮断器の納期遅れの原因となる。さらに、従来の漏電検
出部は電磁トリップ機構の背後（負荷側）に直列的に配
置されるため、遮断器が主回路方向すなわち縦方向に長
くなる、など、組立て作業性，納期，遮断器寸法などの
面で問題があり、改善が望まれていた。The problems with the leakage detecting unit configured in this way are as follows. That is, the shape is not constant in a state where the electromagnetic trip mechanism and the main circuit portion of the earth leakage detection unit in which the flexible long primary conductor penetrates the zero-phase current transformer are integrated,
It is relatively difficult to insert and position the yokes 2 of the electromagnetic trip mechanism into the grooves formed in the mold case 11 one by one. In addition, the electromagnetic trip mechanism has many types of ratings, and since spot brazing is performed each time according to the customer's request, work efficiency is poor, and it is not possible to respond immediately to changes in requirements.
This will cause delay in delivery of the circuit breaker. Furthermore, because the conventional leakage detector is arranged in series behind the electromagnetic trip mechanism (on the load side), the circuit breaker becomes longer in the main circuit direction, that is, in the vertical direction. Assembly workability, delivery time, and circuit breaker dimensions However, there was a problem in that aspect, and improvement was desired.
この発明の目的は、前記従来の問題点を同時に解決し
うる漏電遮断器の構成を提供することである。An object of the present invention is to provide a structure of an earth leakage breaker which can solve the above-mentioned conventional problems at the same time.
上記課題を解決するために、この発明においては、主
回路の零相電流を検出して検出信号を漏電トリップ機構
へ出力する漏電検出部と、主回路に接続されるトリップ
コイルを有する電磁トリップ機構と、この電磁トリップ
機構のトリップ操作により開閉機構を介して操作され、
主回路を遮断する遮断機構とをカバーとケースからなる
容器内に収納してなる漏電遮断器において、前記漏電検
出部は、零相変流器，該零相変流器の貫通孔に中央１辺
が挿入されてその両側２辺が該零相変流器を挟むように
コ字状に折り曲げられ、かつその両側２辺が取付け面を
形成する銅板からなる１次導体，前記零相変流器が収納
される収納部を有し、前記零相変流器の２次側に検出さ
れた電流を増幅するICなどが搭載されたプリント板を保
持するベース，このベースに係合され、該ベースの収納
部に収納された零相変流器を保持するカバーとからな
り、該ベースとカバーにより一次導体が貫通孔に貫通さ
れた零相変流器を保持してユニット化し、前記電磁トリ
ップ機構の下部位置にユニット化した漏電検出部を、そ
の一次導体の取付け面が容器の底面と平行となるように
前記容器の底面側より挿入して配置させ、該漏電検出部
の一次導体の一方の取付け面を容器内の固定面にねじに
より固定して該一次導体の一方の取付け面と前記電磁ト
リップ機構のトリップコイルを電気的に接続するととも
に、該他方の取付け面を前記遮断機構に接続される導体
に固定して該導体と前記一次導体の他方の取付け面を電
気的に接続するものとする。In order to solve the above problems, in the present invention, an electromagnetic trip mechanism having a leakage detection unit that detects a zero-phase current of a main circuit and outputs a detection signal to the leakage trip mechanism, and a trip coil connected to the main circuit. With this trip operation of the electromagnetic trip mechanism, it is operated via the opening and closing mechanism,
In an earth leakage circuit breaker in which a breaking mechanism for breaking the main circuit is housed in a container consisting of a cover and a case, the earth leakage detection unit includes a zero-phase current transformer, and a central portion 1 in a through hole of the zero-phase current transformer. A primary conductor made of a copper plate in which a side is inserted and two sides of the side are bent in a U shape so as to sandwich the zero-phase current transformer, and two sides of the side form a mounting surface, the zero-phase current A base for holding a printed circuit board having an accommodating portion for accommodating an IC and the like for amplifying the detected current on the secondary side of the zero-phase current transformer, the base being engaged with the base, A base for holding the zero-phase current transformer accommodated in the accommodating portion of the base, and the base and the cover hold the zero-phase current transformer having the primary conductor penetrating through the through-hole to form a unit, and the electromagnetic trip Installed a unitary leakage detection unit at the lower position of the mechanism and its primary conductor Is inserted and arranged from the bottom side of the container so that it is parallel to the bottom surface of the container, and one mounting surface of the primary conductor of the leakage detecting unit is fixed to a fixing surface in the container with a screw to fix the primary conductor. One of the mounting surfaces is electrically connected to the trip coil of the electromagnetic trip mechanism, and the other mounting surface is fixed to a conductor connected to the breaking mechanism, and the other mounting surface of the conductor and the primary conductor is fixed. It shall be electrically connected.
本発明は、電磁トリップ機構の下部側にスペースが存
在する点に着目し、漏電検出部の一次導体の一方の取付
け面が容器の底面に平行となるように、すなわち零相変
流器が電磁トリップ機構の下部に横たわるように配置す
ることによって漏電検出部の高さ寸法を小さくして電磁
トリップ機構の下部のスペースに収容し、その際１次導
体の一方の取付け面が当接される容器内固定面が電磁ト
リップ機構のトリップコイルと同電位となるように遮断
器本体側を構成することにより、漏電検出部を、その１
次導体が電磁トリップ機構のトリップコイルに接続され
た状態に遮断器容器内に剛に固定することができる。ま
た、１次導体の他方の取付け面には、電磁トリップ機構
と遮断機構（104）とを接続している可撓導体（104a）
の電磁トリップ機構側を接続することにより、１次導体
が遮断器の主回路中に直列に接続され、遮断器の全極に
共通な１組の，遮断器の幅方向に寸法の小さい漏電トリ
ップ機構を、同様に幅方向寸法の小さい開閉機構（10
5）と遮断器の幅方向に並べて配置することにより、遮
断器の幅を大きくすることなく、漏電検出部が遮断器の
縦方向に占めていたスペースを完全に無くすることがで
きる。そして、１次導体を遮断器容器内固定面に固定し
ているねじを取り外すことにより漏電検出部を遮断器容
器外へ容易に取り出すことができ、電磁トリップ機構と
関係なく、ねじ１つで遮断器容器への着脱が可能にな
る。The present invention focuses on the fact that there is a space on the lower side of the electromagnetic trip mechanism, so that one mounting surface of the primary conductor of the leakage detection unit is parallel to the bottom surface of the container, that is, the zero-phase current transformer is electromagnetic. A container that is placed so as to lie under the trip mechanism to reduce the height dimension of the leakage detection unit and accommodate it in the space under the electromagnetic trip mechanism, in which case one mounting surface of the primary conductor abuts. By configuring the circuit breaker body side so that the inner fixed surface has the same potential as the trip coil of the electromagnetic trip mechanism,
The secondary conductor can be rigidly fixed in the circuit breaker container while being connected to the trip coil of the electromagnetic trip mechanism. The flexible conductor (104a) connecting the electromagnetic trip mechanism and the interruption mechanism (104) to the other mounting surface of the primary conductor.
The primary conductor is connected in series in the main circuit of the circuit breaker by connecting the electromagnetic trip mechanism side of the The opening and closing mechanism (10
By arranging 5) and the breaker side by side in the width direction, it is possible to completely eliminate the space occupied by the earth leakage detector in the vertical direction of the breaker without increasing the width of the breaker. Then, by removing the screw that fixes the primary conductor to the fixing surface inside the circuit breaker container, the leakage detector can be easily taken out of the circuit breaker container, and it can be disconnected with one screw regardless of the electromagnetic trip mechanism. It can be attached to and detached from the vessel.
第１図に本発明の一実施例による漏電検出部構成の分
解斜視図を示し、第２図ないし第４図に第１図における
各ブロックごとの平面図を、また第５図にこれら各ブロ
ックを一体に結合してなる漏電検出部の正面図と平面図
とを示す。そして、第６図は、この漏電検出部を組み込
んだ漏電遮断器の全体構成例を示す。FIG. 1 shows an exploded perspective view of the structure of an earth leakage detecting portion according to an embodiment of the present invention, FIGS. 2 to 4 are plan views of respective blocks in FIG. 1, and FIG. The front view and the top view of the earth leakage detection part formed by integrally connecting the two are shown. Then, FIG. 6 shows an example of the overall configuration of an earth leakage breaker incorporating this earth leakage detection section.
第１図（ａ）に示す，合成樹脂からなるベース９は、
零相変流器が収納される収納部を有し、ICなどを搭載し
たプリント板18が取り付けられている。このベース９に
は、同図（ｂ）に示す，零相変流器６を貫通する，銅板
をコ字状に折り曲げて作られコ字の両側の２辺が取付け
面を形成する１次導体15のそれぞれ一方の面，ここでは
それぞれ上面の取付け孔15aを利用してこの上面を電磁
トリップ機構100（第６図）のトリップコイル１と同電
位にある固定面100aに締め付けるねじ100bが通過する案
内部9aと、同図（ｃ）に示す，同図（ｂ）の１次導体15
の上下方向間隔を保持しつつベース９と一体化されるカ
バー10を不動に係止する，先端部に爪が形成された係止
部9b,9cならびに案内ブロック9dが形成されている。な
お、符号9eは零相変流器６の浮上りを押える突起であ
る。The base 9 made of synthetic resin shown in FIG.
It has a storage part for storing the zero-phase current transformer, and a printed board 18 on which an IC or the like is mounted is attached. The base 9 is a primary conductor that penetrates the zero-phase current transformer 6 and is made by bending a copper plate into a U-shape, and two sides on both sides of the U-shape form a mounting surface, as shown in FIG. Screws 100b for fastening the upper surface to the fixed surface 100a having the same potential as the trip coil 1 of the electromagnetic trip mechanism 100 (FIG. 6) pass through the mounting holes 15a on one surface of each of the fifteen, here, respectively. The guide portion 9a and the primary conductor 15 shown in FIG.
Locking portions 9b and 9c with pawls formed at the tip and a guide block 9d are formed for fixedly locking the cover 10 that is integrated with the base 9 while maintaining the vertical interval. Reference numeral 9e is a protrusion that holds the floating of the zero-phase current transformer 6.
なお、従来の漏電トリップ機構102（第７図）では、
漏電検出部101の零相変流器６から導出された２本の遮
断器動作試験用リード線を短絡するための試験用接点
を、漏電トリップ機構本体から分離して開閉機構105の
操作ハンドル105aの近傍に取り付けていたが、本発明で
は、この接点を本体側に一体化した漏電トリップ機構20
2（第６図）として開閉機構105と遮断器の幅方向に並ん
で配設し、漏電検出部201の零相変流器から導出された
２本の試験用リード線と漏電トリップ機構202のトリッ
プコイルへ向かう２本のリード線との合計４本のリード
線と、漏電トリップ機構202から導出された４本のリー
ド線とは、それぞれコネクタ11のめす側とおす側とに接
続され、漏電検出部201を遮断器容器内へ挿入するのに
先立ってめす側とおす側とを嵌め合わせて漏電検出部20
1が挿入される遮断器容器内の空間に収納するようにし
ている。In the conventional earth leakage trip mechanism 102 (Fig. 7),
The test contact for short-circuiting the two circuit breaker operation test leads derived from the zero-phase current transformer 6 of the earth leakage detection unit 101 is separated from the earth leakage trip mechanism body and the operation handle 105a of the opening / closing mechanism 105 is separated. In the present invention, this contact was integrated in the main body side of the earth leakage trip mechanism 20.
2 (FIG. 6), which are arranged side by side in the width direction of the switching mechanism 105 and the circuit breaker, the two test lead wires derived from the zero-phase current transformer of the earth leakage detector 201 and the earth leakage trip mechanism 202. A total of four lead wires including two lead wires toward the trip coil and four lead wires derived from the earth leakage trip mechanism 202 are connected to the female side and the male side of the connector 11, respectively, to detect an electric leakage. Before inserting the part 201 into the circuit breaker container, the female side and the male side are fitted to each other and the leakage detecting part 20 is fitted.
It is designed to be stored in the space inside the breaker container where 1 is inserted.
以上に述べたように、本発明によれば、主回路の零相
電流を検出して検出信号を漏電トリップ機構へ出力する
漏電検出部と、主回路に接続されるトリップコイルを有
する電磁トリップ機構と、この電磁トリップ機構のトリ
ップ操作により開閉機構を介して操作され、主回路を遮
断する遮断機構とをカバーとケースからなる容器内に収
納してなる漏電遮断器において、前記漏電検出部は、零
相変流器，該零相変流器の貫通孔に中央１辺が挿入され
てその両側２辺が該零相変流器を挟むようにコ字状に折
り曲げられ、かつその両側２辺が取付け面を形成する銅
板からなる１次導体，前記零相変流器が収納される収納
部を有し、前記零相変流器の２次側に検出された電流を
増幅するICなどが搭載されたプリント板を保持するベー
ス，このベースに係合され、該ベースの収納部に収納さ
れた零相変流器を保持するカバーとからなり、該ベース
とカバーにより一次導体が貫通孔に貫通された零相変流
器を保持してユニット化し、前記電磁トリップ機構の下
部位置にユニット化した漏電検出部を、その一次導体の
取付け面が容器の底面と平行となるように前記容器の底
面側より挿入して配置させ、該漏電検出部の一次導体の
一方の取付け面を容器内の固定面にねじにより固定して
該一次導体の一方の取付け面と前記電磁トリップ機構の
トリップコイルを電気的に接続するとともに、該他方の
取付け面を前記遮断機構に接続される導体に固定して該
導体と前記一次導体の他方の取付け面を電気的に接続し
たので、漏電検出部を遮断器容器内に挿入してその１次
導体を固定面にねじ止めしたとき１次導体が固定面を介
して電磁トリップ機構のトリップコイルに接続されて遮
断器容器内に剛に固定される，電磁トリップ機構の定格
とは関係なく遮断器容器内に組込み可能な単独のユニッ
トとなり、電磁トリップ機構，漏電検出部それぞれ個別
に遮断器容器に組み込めば要求を満たした遮断器が構成
されるため、両者の遮断器容器内への組込みが容易にな
るとともに、従来のような，そのつど顧客の要求に合わ
せて電磁トリップ機構とろう付けする作業がなくなり、
顧客要求の変化に即応して組立てがねじを用いて迅速に
行われ、組立ての自動化も可能となり、納期遅れが大幅
に改善される。また、１次導体の取付け面が容器の底面
と平行となるように漏電検出部を容器内に該容器の底面
側より挿入し、該一次導体の一方の取付け面を遮断器容
器の固定面にねじ止めし、他方の取付け面に電磁トリッ
プ機構電源側に接続されていた可撓導体の電磁トリップ
機構側をねじ止めすることにより、１次導体を電磁トリ
ップ機構の電源側主回路に直列に挿入可能としたので、
漏電トリップ機構の開閉機構位置への移設と合わせ、電
磁トリップ機構負荷側のスペースが完全に無くなり、遮
断器の幅寸法を増すことなく縦方向寸法が大幅に小さく
なり、漏電遮断器が組み込まれる盤のよりコンパクト化
が可能になる。As described above, according to the present invention, an electromagnetic trip mechanism having a leakage detection unit that detects a zero-phase current of the main circuit and outputs a detection signal to the leakage trip mechanism, and a trip coil connected to the main circuit. In the earth leakage breaker, which is operated by the trip operation of the electromagnetic trip mechanism through the opening / closing mechanism and is housed in the container including the cover and the case, the earthing mechanism that shuts off the main circuit, Zero-phase current transformer, a central one side is inserted into a through hole of the zero-phase current transformer, two sides on both sides thereof are bent in a U shape so as to sandwich the zero-phase current transformer, and two sides on both sides thereof. Is an IC for amplifying the detected current on the secondary side of the zero-phase current transformer, which has a primary conductor made of a copper plate forming a mounting surface, a housing portion for housing the zero-phase current transformer, and the like. The base that holds the mounted printed board, And a cover for holding the zero-phase current transformer housed in the housing part of the base, and a unit for holding the zero-phase current transformer in which the primary conductor is penetrated through the through hole by the base and the cover, A unitary leakage detecting unit is arranged at a lower position of the electromagnetic trip mechanism by inserting it from the bottom side of the container so that the mounting surface of the primary conductor is parallel to the bottom face of the container. One mounting surface of the conductor is fixed to a fixing surface in the container with a screw to electrically connect one mounting surface of the primary conductor and the trip coil of the electromagnetic trip mechanism, and the other mounting surface is cut off. Since the conductor and the other mounting surface of the primary conductor are fixedly connected to the conductor to be connected to the mechanism, the leakage detecting portion is inserted into the circuit breaker container and the primary conductor is screwed to the fixing surface. First stop when stopped The body is connected to the trip coil of the electromagnetic trip mechanism through the fixing surface and is rigidly fixed in the circuit breaker container, which is a single unit that can be installed in the circuit breaker container regardless of the rating of the electromagnetic trip mechanism. If the electromagnetic trip mechanism and the earth leakage detection unit are individually installed in the circuit breaker container, a circuit breaker that meets the requirements is configured, so that both can be easily installed in the circuit breaker container, and Eliminating the work of brazing with the electromagnetic trip mechanism according to customer requirements,
Assembling can be done quickly using screws in response to changes in customer requirements, and automation of assembly is also possible, greatly reducing delivery delays. Further, the earth leakage detection part is inserted into the container from the bottom side of the container so that the mounting surface of the primary conductor is parallel to the bottom surface of the container, and one mounting surface of the primary conductor is fixed to the fixing surface of the circuit breaker container. Insert the primary conductor in series with the main circuit on the power supply side of the electromagnetic trip mechanism by screwing it and screwing on the electromagnetic trip mechanism side of the flexible conductor that was connected to the power supply side of the electromagnetic trip mechanism on the other mounting surface. Since it was possible,
Combined with the relocation of the earth leakage trip mechanism to the opening / closing mechanism position, the space on the load side of the electromagnetic trip mechanism is completely eliminated, and the vertical dimension is significantly reduced without increasing the width dimension of the circuit breaker. Can be made more compact.
第１図（ａ）〜（ｃ）はそれぞれ本発明の一実施例によ
る漏電検出部の構成を示す分解斜視図、第２図ないし第
４図はそれぞれ第１図における各ブロックの平面図、第
５図（ａ）および（ｂ）は第１図の各ブロックを結合し
てなる漏電検出部の正面図と平面図、第６図は第１図に
示す漏電検出部を組み込んだ漏電遮断器の全体機構例を
示す側面図、第７図は従来構成の漏電検出部を組み込ん
だ漏電遮断器の全体構成例を示す側面図、第８図（ａ）
および（ｂ）は第７図に示す漏電検出部の主回路部分を
漏電トリップ機構とともに示す正面図および側面図であ
る。 5,15:1次導体、6:零相変流器、8:プリント板組立て、9:
ベース、10:カバー、11,12:モールドケース（容器）、1
8:プリント板、101,201:漏電検出部、102,202:漏電トリ
ップ機構。1 (a) to 1 (c) are exploded perspective views showing the structure of an earth leakage detection unit according to an embodiment of the present invention, and FIGS. 2 to 4 are plan views of respective blocks in FIG. 5 (a) and 5 (b) are a front view and a plan view of an earth leakage detection unit formed by connecting the blocks of FIG. 1, and FIG. 6 shows an earth leakage breaker incorporating the earth leakage detection unit shown in FIG. FIG. 8 (a) is a side view showing an example of the entire mechanism, FIG. 7 is a side view showing an example of the entire structure of an earth leakage breaker incorporating an earth leakage detection unit having a conventional structure.
7A and 7B are a front view and a side view showing the main circuit portion of the leakage detection unit shown in FIG. 7 together with the leakage trip mechanism. 5,15: Primary conductor, 6: Zero-phase current transformer, 8: Printed board assembly, 9:
Base, 10: Cover, 11, 12: Molded case (container), 1
8: Printed board, 101,201: Leakage detector, 102,202: Leakage trip mechanism.
Claims (1)
電トリップ機構へ出力する漏電検出部と、主回路に接続
されるトリップコイルを有する電磁トリップ機構と、こ
の電磁トリップ機構のトリップ操作により開閉機構を介
して操作され、主回路を遮断する遮断機構とをカバーと
ケースからなる容器内に収納してなる漏電遮断器におい
て、前記漏電検出部は、零相変流器，該零相変流器の貫
通孔に中央１辺が挿入されてその両側２辺が該零相変流
器を挟むようにコ字状に折り曲げられ、かつその両側２
辺が取付け面を形成する銅板からなる１次導体，前記零
相変流器が収納される収納部を有し、前記零相変流器の
２次側に検出された電流を増幅するICなどが搭載された
プリント板を保持するベース，このベースに係合され、
該ベースの収納部に収納された零相変流器を保持するカ
バーとからなり、該ベースとカバーにより一次導体が貫
通孔に貫通された零相変流器を保持してユニット化し、
前記電磁トリップ機構の下部位置にユニット化した漏電
検出部を、その一次導体の取付け面が容器の底面と平行
となるように前記容器の底面側より挿入して配置させ、
該漏電検出部の一次導体の一方の取付け面を容器内の固
定面にねじにより固定して該一次導体の一方の取付け面
と前記電磁トリップ機構のトリップコイルを電気的に接
続するとともに、該他方の取付け面を前記遮断機構に接
続される導体に固定して該導体と前記一次導体の他方の
取付け面を電気的に接続したことを特徴とする漏電遮断
器。1. An earth leakage detection unit for detecting a zero-phase current of a main circuit and outputting a detection signal to the earth leakage trip mechanism, an electromagnetic trip mechanism having a trip coil connected to the main circuit, and a trip of this electromagnetic trip mechanism. In an earth leakage circuit breaker which is operated through an opening / closing mechanism and is housed in a container composed of a cover and a case, the earth leakage detecting unit includes a zero-phase current transformer and the zero-phase current transformer. One side of the center is inserted into the through hole of the phase current transformer, two sides of the center side are bent in a U shape so as to sandwich the zero phase current transformer, and both sides 2
An IC for amplifying the current detected on the secondary side of the zero-phase current transformer, which has a primary conductor made of a copper plate whose side forms a mounting surface, and a housing portion for housing the zero-phase current transformer. The base that holds the printed board on which is mounted, is engaged with this base,
A cover for holding the zero-phase current transformer housed in the housing portion of the base, and a unit for holding the zero-phase current transformer in which the primary conductor is penetrated by the through hole by the base and the cover.
A leakage detection unit unitized at the lower position of the electromagnetic trip mechanism is inserted and arranged from the bottom side of the container so that the mounting surface of the primary conductor thereof is parallel to the bottom surface of the container,
One of the mounting surfaces of the primary conductor of the leakage detecting unit is fixed to a fixing surface in the container with a screw to electrically connect one mounting surface of the primary conductor to the trip coil of the electromagnetic trip mechanism, and the other of the mounting surfaces. The electrical leakage circuit breaker is characterized in that the mounting surface of is fixed to a conductor connected to the breaking mechanism, and the conductor and the other mounting surface of the primary conductor are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17759989A JPH0828182B2 (en) | 1989-07-10 | 1989-07-10 | Earth leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17759989A JPH0828182B2 (en) | 1989-07-10 | 1989-07-10 | Earth leakage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0343931A JPH0343931A (en) | 1991-02-25 |
| JPH0828182B2 true JPH0828182B2 (en) | 1996-03-21 |
Family
ID=16033815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17759989A Expired - Lifetime JPH0828182B2 (en) | 1989-07-10 | 1989-07-10 | Earth leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0828182B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2527498Y2 (en) * | 1991-03-04 | 1997-02-26 | ホシデン株式会社 | Connector |
| JPH0528904A (en) * | 1991-07-18 | 1993-02-05 | Mitsubishi Electric Corp | Earth leakage breaker |
| JPH06210414A (en) * | 1993-01-19 | 1994-08-02 | Nippon Steel Corp | Method for preventing generation of ground circulating current in induction heating device for molten steel |
| JP5513875B2 (en) * | 2009-12-22 | 2014-06-04 | パナソニック株式会社 | Power supply control device |
| ITMI20131736A1 (en) * | 2013-10-17 | 2015-04-18 | Abb Spa | CURRENT TRANSFORMER FOR LOW VOLTAGE DIFFERENTIAL SWITCHES |
-
1989
- 1989-07-10 JP JP17759989A patent/JPH0828182B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0343931A (en) | 1991-02-25 |
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