JPH10208610A - Ground leakage breaker - Google Patents
Ground leakage breakerInfo
- Publication number
- JPH10208610A JPH10208610A JP4588498A JP4588498A JPH10208610A JP H10208610 A JPH10208610 A JP H10208610A JP 4588498 A JP4588498 A JP 4588498A JP 4588498 A JP4588498 A JP 4588498A JP H10208610 A JPH10208610 A JP H10208610A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- plate
- zero
- current transformer
- phase current
- 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.)
- Granted
Links
Landscapes
- Breakers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、零相変流器を貫通
する導体の作業性を改善した漏電遮断器に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth leakage breaker with improved workability of a conductor passing through a zero-phase current transformer.
【０００２】[0002]
【従来の技術】漏電遮断器の従来技術を図６及び図７に
示す。図６及び図７において、ケース１とカバー２とで
形成された空間内に、夫々の電源端子３ａ〜３ｃに接続
される固定接点（図示せず）と、該固定接点に対し開閉
する可動接点（図示せず）とが設けられている。その可
動接点に接続線４を介し過電流検出手段としてのバイメ
タル５が接続され、そのバイメタル５と負荷端子６ａ〜
６ｃとが導体７によって夫々接続されている。各極毎の
導体７は板状のものであって零相変流器９を貫通してお
り、該零相変流器９を貫通した部分においては互いに各
極毎に絶縁できるようにするため、図示の如き絶縁チュ
ーブ８或いは絶縁テープを装着している。2. Description of the Related Art The prior art of an earth leakage breaker is shown in FIGS. 6 and 7, in a space formed by the case 1 and the cover 2, fixed contacts (not shown) connected to the respective power terminals 3a to 3c, and movable contacts that open and close the fixed contacts. (Not shown). A bimetal 5 as an overcurrent detecting means is connected to the movable contact via a connection line 4, and the bimetal 5 and the load terminals 6a to
6c are connected by conductors 7 respectively. The conductor 7 for each pole is plate-shaped and penetrates through the zero-phase current transformer 9. In order to be able to insulate each pole at the portion penetrating the zero-phase current transformer 9. An insulating tube 8 or an insulating tape as shown is attached.
【０００３】この漏電遮断器は、回路を流れる地絡電流
が所定の値に達すると、それを零相変流器９が検出し、
該零相変流器９の検出により漏電検出手段１０を介し図
示しない電圧引外し装置を駆動させることによって図示
しないリンク機構部をトリップ動作時のときの同様に動
作させることにより、可動接点を固定接点から開離する
ようにしている。In this earth leakage breaker, when a ground fault current flowing through a circuit reaches a predetermined value, the zero-phase current transformer 9 detects this, and
The movable contact is fixed by driving a not-shown link mechanism unit in the same manner as in the trip operation by driving a not-shown voltage tripping device via the earth leakage detecting means 10 by detecting the zero-phase current transformer 9. They are separated from the contacts.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記に示す
従来技術の漏電遮断器は、零相変流器９を貫通する夫々
の導体７が絶縁チューブ８或いは絶縁テープなどの被覆
部品で絶縁するので、その部分がそれだけ太くなり、そ
のため、配線時、導体７が零相変流器９を貫通しにくい
問題がある。しかも絶縁チューブ８を用いた場合、零相
変流器９の貫通時に絶縁チューブ８自体に傷を付けたり
することがあり、また絶縁テープを用いた場合、巻き付
け作業に不良が発生したりすることがあり、従って、被
覆部品の装着作業の不良が起こり得るので、大事故を招
くおそれがあった。また、導体７自体の形状が大きいの
で、漏電遮断器内の限られた空間部内に収容することが
難しく、遮断器全体が大型になってしまう問題がある。In the prior art earth leakage breaker described above, each conductor 7 penetrating through the zero-phase current transformer 9 is insulated by a covering component such as an insulating tube 8 or an insulating tape. Therefore, there is a problem that it is difficult for the conductor 7 to penetrate the zero-phase current transformer 9 at the time of wiring. In addition, when the insulating tube 8 is used, the insulating tube 8 itself may be damaged when the zero-phase current transformer 9 penetrates, and when the insulating tape is used, the winding operation may be defective. Therefore, there is a possibility that the mounting operation of the coated part may be defective, which may cause a serious accident. Further, since the shape of the conductor 7 itself is large, it is difficult to accommodate the conductor 7 in a limited space in the earth leakage breaker, and there is a problem that the entire breaker becomes large.
【０００５】本発明の目的は、上記事情に鑑み、複数の
極の導体であっても、零相変流器に対する作業性を改善
し、しかも遮断器自体の小型化を図り得る漏電遮断器を
提供することにある。SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide an earth leakage breaker capable of improving workability with respect to a zero-phase current transformer and reducing the size of the circuit breaker itself even if the conductor has a plurality of poles. To provide.
【０００６】[0006]
【課題を解決するための手段】本発明では、零相変流器
の導体貫通孔内を第一の板状導体と第二の板状導体と第
三の板状導体とが貫通する漏電遮断器において、上記導
体の上記導体貫通孔に配設された絶縁バリアを備え、こ
の絶縁バリアは上記導体貫通孔の略中央部に設けられて
上記第一の板状導体と上記第二の板状導体とを絶縁する
本体部と、この本体部の一端に形成されて上記第一の板
状導体の端面および上記第二の板状導体の端面に沿って
延びるととともに上記第一の板状導体および上記第二の
板状導体と上記第三の板状導体とを絶縁する翼部とを有
し、上記第一の板状導体と上記第二の板状導体と上記第
三の板状導体の位置をそれぞれ相対的に確定させるよう
に構成されたことを特徴とするものである。SUMMARY OF THE INVENTION According to the present invention, an earth leakage breaker is provided in which a first plate-like conductor, a second plate-like conductor, and a third plate-like conductor penetrate through a conductor through hole of a zero-phase current transformer. The apparatus further comprises an insulating barrier disposed in the conductor through hole of the conductor, the insulating barrier being provided at a substantially central portion of the conductor through hole, the first plate-shaped conductor and the second plate-shaped A main body portion that insulates the conductor from the main body portion, the main body portion being formed at one end of the main body portion and extending along an end surface of the first plate-shaped conductor and an end surface of the second plate-shaped conductor; And a wing part for insulating the second plate-shaped conductor and the third plate-shaped conductor, and the first plate-shaped conductor, the second plate-shaped conductor, and the third plate-shaped conductor Are relatively determined.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施例を図１乃至
図５により説明する。図１乃至図４は本発明の漏電遮断
器の第一の実施例を示している。実施例の漏電遮断器
は、図１に示すように、ケース１１とカバー１２とによ
って空間部が形成され、その空間部に回路を開閉する接
点が内蔵されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4 show a first embodiment of an earth leakage breaker according to the present invention. In the earth leakage breaker of the embodiment, as shown in FIG. 1, a space is formed by a case 11 and a cover 12, and a contact for opening and closing a circuit is built in the space.
【０００８】該接点は、固定接点台１３の一端部に設け
られた固定接点１４と、可動接点台１６の一端部に設け
られた可動接点１５とからなり、可動接点１５が固定接
点１４に接することによって回路への通電を可能にして
いる。固定接点台１３はケース１１に固定されており、
該ケース１１の外側部に他端部が配置されて電源端子１
３ａを構成している。可動接点台１６は軸１７によって
ケース１１に軸支され、ばね１８により図１において反
時計方向に回動可能に付勢され、該ばね１８のばね力に
より可動接点１５が固定接点１４に対し一定の力で接触
するようにしている。また可動接点台１６の他端にはリ
ード線１９を介し、過電流検出手段としてのバイメタル
２０が接続され、該バイメタル２０は先端部に調整ねじ
２０ａを有し、またリード線１９との接続部にはヒータ
２１を有している。さらに、バイメタル２０には導体２
２を介し負荷端子２３が接続されている。その場合、導
体２２は各極毎に設けられ（本例では三相に対応して三
本）、夫々が零相変流器３５を貫通している。零相変流
器３５は、これと離れた位置にＩＣ等の電子部品を搭載
した漏電検出手段及び電圧引外し手段（図１では共に図
示せず）を有している。The contact comprises a fixed contact 14 provided at one end of a fixed contact base 13 and a movable contact 15 provided at one end of a movable contact base 16, and the movable contact 15 contacts the fixed contact 14. This makes it possible to energize the circuit. The fixed contact base 13 is fixed to the case 11,
The other end is disposed on the outer side of the case 11 and the power terminal 1
3a. The movable contact base 16 is pivotally supported on the case 11 by a shaft 17 and urged by a spring 18 so as to be rotatable counterclockwise in FIG. 1. The movable contact 15 is fixed to the fixed contact 14 by the spring force of the spring 18. The force of contact. A bimetal 20 as an overcurrent detecting means is connected to the other end of the movable contact stand 16 via a lead wire 19, and the bimetal 20 has an adjusting screw 20a at a tip end thereof. Has a heater 21. Further, the bimetal 20 has a conductor 2
2, a load terminal 23 is connected. In that case, the conductors 22 are provided for each pole (three in this example, corresponding to three phases), and each penetrates the zero-phase current transformer 35. The zero-phase current transformer 35 has a leakage detecting means and a voltage tripping means (both not shown in FIG. 1) on which electronic parts such as ICs are mounted at a position distant therefrom.
【０００９】一方、可動接点台１６の上方位置には軸２
４によってフック２５が軸支されると共に、該フック２
５が駆動ばね２６によって反時計方向に付勢されてい
る。このフック２５と可動接点台１６の下部との間には
複数本のリンク部材で構成されるリンク機構部４０が連
結され、該リンク機構４０は、フック２５が図１に示す
位置から反時計方向に動作したとき、そのフック２５の
動作に連動してトリップ動作することにより、可動接点
台１６をばね１８の付勢力に抗し時計方向に回動させ、
可動接点１５を固定設定１４から開極させるようにして
いる。On the other hand, the shaft 2 is located above the movable contact base 16.
4 supports the hook 25 and the hook 2
5 is urged counterclockwise by a drive spring 26. A link mechanism section 40 composed of a plurality of link members is connected between the hook 25 and the lower portion of the movable contact base 16, and the link mechanism 40 moves the hook 25 counterclockwise from the position shown in FIG. When the movable contact table 16 is operated in a trip operation in conjunction with the operation of the hook 25, the movable contact table 16 is rotated clockwise against the urging force of the spring 18,
The movable contact 15 is opened from the fixed setting 14.
【００１０】他方、フック２５と係合するトリップ金具
２７はピン２８によって軸支され、かつばねによって時
計方向に付勢されており、その一端側が引外しレバー２
９に係止されている。On the other hand, a trip fitting 27 engaged with the hook 25 is pivotally supported by a pin 28 and is urged clockwise by a spring.
9.
【００１１】引外しレバー２９はその下部に動作棒３０
を有し、中央部がピン３１によって軸支されている。ま
たこの引外しレバー２９は、ばねにより反時計方向に付
勢され、ピン３１寄りの端部がトリップ金具２７の上端
部と当接することによってトリップ金具２７を係止して
いる。そして、引外しレバー２９のトリップ金具２７と
反対側には各極共通のリレー軸３２が配置され、該リレ
ー軸３２は、ケース１１に回転自在に軸支され、かつば
ねにより時計方向に付勢されている。そして、何れか一
方の極の回路に流れた過電流によって対応するバイメタ
ル２０が彎曲すると、該バイメタル２０により調整ねじ
２０ａを介し被押圧板３２ａが押圧されることにより、
反時計方向に作動するようになっている。さらに、リレ
ー軸３２はバイメタル３２の彎曲動作によって作動した
とき、引外しレバー２９の動作棒３０を押し付け、該引
外しレバー２９を時計方向に動作させて引外しレバー２
９とトリップ金具２７との係合を解除させるようにして
いる。The trip lever 29 has an operating rod 30 at its lower part.
, And the central portion is pivotally supported by the pin 31. The trip lever 29 is urged counterclockwise by a spring, and the end near the pin 31 contacts the upper end of the trip fitting 27 to lock the trip fitting 27. A relay shaft 32 common to the poles is disposed on the side of the trip lever 29 opposite to the trip fitting 27. The relay shaft 32 is rotatably supported by the case 11, and is urged clockwise by a spring. Have been. When the corresponding bimetal 20 bends due to the overcurrent flowing in the circuit of one of the poles, the bimetal 20 presses the pressed plate 32a via the adjustment screw 20a,
It operates counterclockwise. Further, when the relay shaft 32 is actuated by the bending operation of the bimetal 32, the operation rod 30 of the trip lever 29 is pressed, and the trip lever 29 is operated clockwise to release the trip lever 2.
9 and the trip fitting 27 are disengaged.
【００１２】図１に示すように固定接点１４と可動接点
１５とが接触することによって回路が通電状態にあると
き、過電流が流れると、ヒータ２１が加熱され、その加
熱によりバイメタル２０が左側に彎曲動作してリレー軸
３２を反時計方向に作動し、該リレー軸３２が引外しレ
バー２９の動作棒３０を押し付けて該引外しレバー２９
を、ピン３１を中心に時計方向に応動させ、その応動に
よって引外しレバー２９がトリップ金具２７に対する係
止を解除し、その解除によってトリップ金具２７がばね
力により時計方向に回り、これによりトリップ金具２７
とフック２５との係合が解除され、該フック２５が駆動
ばね２６のばね力により反時計方向に動作し、さらにリ
ンク機構部４０がトリップ動作して可動接点台１６が時
計方向に回動することにより、可動接点１５が固定接点
１４から開離するようにしている。As shown in FIG. 1, when the fixed contact 14 and the movable contact 15 come into contact with each other to energize the circuit, when an overcurrent flows, the heater 21 is heated, and the heating causes the bimetal 20 to move to the left. The relay shaft 32 operates in a counterclockwise direction due to the bending operation, and the relay shaft 32 presses the operating rod 30 of the trip lever 29 to push the trip lever 29.
Is moved clockwise about the pin 31, whereby the tripping lever 29 releases the lock on the trip fitting 27, and the release causes the trip fitting 27 to rotate clockwise by spring force, thereby causing the trip fitting to rotate. 27
Is disengaged from the hook 25, the hook 25 operates counterclockwise by the spring force of the drive spring 26, and the link mechanism 40 trips to rotate the movable contact base 16 clockwise. Thereby, the movable contact 15 is separated from the fixed contact 14.
【００１３】また、回路を流れる地絡電流が所定の値に
達すると、それを零相変流器３５が検出し、その検出信
号を図示しない漏電検出手段で増幅して電圧引外し装置
を駆動し、該電圧引外し装置が引外しレバー２９の動作
棒を押し付けて該引外しレバー２９が過電流検出時のと
きと同様に時計方向に応動し、リンク機構部４０がトリ
ップ動作することにより、可動接点１５を開離するよう
にしている。When the ground fault current flowing through the circuit reaches a predetermined value, the zero-phase current transformer 35 detects the current, and the detection signal is amplified by leakage detection means (not shown) to drive the voltage trip device. Then, the voltage tripping device presses the operating rod of the tripping lever 29, the tripping lever 29 responds clockwise in the same manner as when overcurrent is detected, and the link mechanism unit 40 trips. The movable contact 15 is opened.
【００１４】このため、リレー軸３２と引外しレバー２
９とトリップ金具２７、フック２５とで過電流引外し機
構を形成している。従って、この漏電遮断器は、固定接
点１４，可動接点１５からなる接点と、可動接点１５を
固定接点１４に対し開閉させるリンク機構部４０と、こ
のリンク機構部４０をトリップ動作させるための過電流
引外し機構と、バイメタル２０とを備えて構成されてい
る。なお図１において、符号４１は接点を開閉させるた
めのハンドルである。For this reason, the relay shaft 32 and the trip lever 2
An overcurrent tripping mechanism is formed by the hook 9, the trip fitting 27 and the hook 25. Therefore, the earth leakage breaker includes a contact including the fixed contact 14 and the movable contact 15, a link mechanism 40 for opening and closing the movable contact 15 with respect to the fixed contact 14, and an overcurrent for tripping the link mechanism 40. It comprises a tripping mechanism and a bimetal 20. In FIG. 1, reference numeral 41 denotes a handle for opening and closing a contact.
【００１５】さらに、実施例の漏電遮断器は、零相変流
器３５を貫通する導体２２の夫々が極間絶縁バリア４２
によって互いに絶縁されている。ここで、極間絶縁バリ
ア４２を詳細に述べる前に、まず導体２２について述べ
ると、導体２２は、図２に示すように、三相に対応し第
一〜第三の導体板２２１〜２２３からなっている。この
うち、第一の導体板２２１は折曲げ加工によって形成さ
れており、ヒータ２１に接続される一端部２２１ａと、
負荷端子２３を構成する他端部２２１ｂと、Ｕ字形をな
す中間部分２２１ｃとを有する板体である。第二の導体
板２２２は前記第一の導体板２２１と対称形状をなして
いる。第三の導体板２２３は直線的にかつほぼ階段状に
折り曲げられており、一端部２２３ａと他端部２２３ｂ
との間の中間部分２２３ｃが水平方向をなしている。Further, in the earth leakage breaker of the embodiment, each of the conductors 22 passing through the zero-phase
Are insulated from each other. Here, before describing the inter-electrode insulating barrier 42 in detail, first, the conductor 22 will be described. As shown in FIG. 2, the conductor 22 corresponds to a three-phase structure and has a first to third conductor plates 221 to 223. Has become. Among them, the first conductor plate 221 is formed by bending, and has one end 221a connected to the heater 21;
This is a plate body having the other end 221b constituting the load terminal 23 and a U-shaped intermediate portion 221c. The second conductor plate 222 has a symmetrical shape with the first conductor plate 221. The third conductor plate 223 is bent linearly and almost stepwise, and has one end 223a and the other end 223b.
An intermediate portion 223c between the two forms a horizontal direction.
【００１６】そして、極間絶縁バリア４２は絶縁性の合
成樹脂によって成形されたものであって、しかも図２乃
至図４に示すように、零相変流器３５の内部に配置され
るものであって、矩形状の本体４２ａと、その本体４２
ａの両側に突設され、第一導体板２２１の中間部２２１
ｃ，第二導体板２２２の中間部２２２ｃを夫々保持する
翼部４２ｂ，４２ｃと、本体４２ａの上部に第三導体板
２２３の中間部分２２３ｃを保持する対向突起４２ｄ，
４２ｄと、本体４２ａの底部に垂下する脚部４２ｅとか
らなり、第一〜第三導体板２２１〜２２３を互いに絶縁
させるようにしている。この極間絶縁バリア４２は零相
変流器３５に挿入したとき、図３に示すように、脚部４
２ｅの先端が零相変流器３５の内側下部に形成された爪
３５ａの凹陥部３５ｂに嵌まり、かつ翼部４２ｂ，４２
ｃが零相変流器３５の内側に突設された支持突起３５ｃ
に適合することによって零相変流器３５の内部に配置さ
れる。従って、第一〜第三導体板２２１〜２２３は、零
相変流器３５の内部においては図３に示す如く極間絶縁
バリア４２によりほぼπ字状に配設されている。The inter-electrode insulating barrier 42 is formed of an insulating synthetic resin, and is disposed inside the zero-phase current transformer 35 as shown in FIGS. And a rectangular main body 42a and the main body 42
a protruding from both sides of the first conductor plate 221 and
c, wing portions 42b and 42c respectively holding an intermediate portion 222c of the second conductor plate 222, and opposing projections 42d holding an intermediate portion 223c of the third conductor plate 223 above the main body 42a.
42d and a leg 42e hanging down from the bottom of the main body 42a. The first to third conductor plates 221 to 223 are insulated from each other. When inserted into the zero-phase current transformer 35, the inter-electrode insulating barrier 42, as shown in FIG.
The tip of 2e fits into the recess 35b of the claw 35a formed at the lower inside of the zero-phase current transformer 35, and the wings 42b, 42
c is a support projection 35c protruding inside the zero-phase current transformer 35
Is arranged inside the zero-phase current transformer 35. Therefore, the first to third conductor plates 221 to 223 are arranged in a substantially π shape inside the zero-phase current transformer 35 by the inter-electrode insulating barrier 42 as shown in FIG.
【００１７】次に、零相変流器３５に導体２２及び極間
絶縁バリア４２を組み込む場合について述べる。まず、
導体２２のうち、図２に示すように第一導体板２２１及
び第二導体板２２２の夫々のＵ字形の中間部分２２１
ｃ，２２３ｃの底部を近接して対向させ、この近接して
対向した状態で第一導体板２２１，第二導体板２２２を
零相変流器３５に貫通させておく。次いで、第三導体板
２２３の中間部分２２３ｃを極間絶縁バリア４２の対向
突起４２ｄ，４２ｄ間に入れて保持し、これを零相変流
器３５における第一導体板２２１と第二導体板２２２と
の間に挿入し、図３に示すように、極間絶縁バリア４２
の脚部４２ｅを零相変流器３５の凹陥部３５ｂに嵌め込
むと共に、対向突起４２ｄを零相変流器３５の支持突起
３５ｃに適合させる。これにより、第一導体板２２１の
中央部分２２１ｃが極間絶縁バリア本体４２ａの一方の
端部に翼部４２ｂによって支持され、かつ第二導体板２
２２の中央部分２２２ｃが本体４２ａの他方の側部に翼
部４２ｃによって夫々支持され、第三導体板２２３の中
央部分２２３ｃが対向突起４２ｄによって支持されるの
で、極間絶縁バリア４２が第一〜第三導体板２２１〜２
２３の夫々を互いに絶縁状態で保持させることができ
る。即ち、極間絶縁バリア４２に対し第一〜第三導体板
が図３に示す如くほぼπ字状の形態に配置されることに
より、第一導体板２２１の中央部分２２１ｃと第二導体
板２２２の中央部分２２２ｃ間、及び第一導体板中央部
分２２１ｃと第三導体板２２３間、並びに第二導体板中
央部分２２２ｃと第三導体板２２３間をそれぞれ同時に
絶縁することができる。Next, a case where the conductor 22 and the inter-electrode insulating barrier 42 are incorporated in the zero-phase current transformer 35 will be described. First,
2, the U-shaped intermediate portions 221 of the first conductor plate 221 and the second conductor plate 222, respectively, as shown in FIG.
The first and second conductor plates 221 and 222 are made to penetrate the zero-phase current transformer 35 in such a state that the bottoms of the first and second conductors c and 223c are closely adjacent to each other. Next, the intermediate portion 223c of the third conductor plate 223 is inserted and held between the opposing projections 42d, 42d of the interelectrode insulating barrier 42, and is held by the first conductor plate 221 and the second conductor plate 222 in the zero-phase current transformer 35. 3 and as shown in FIG.
Is fitted into the recess 35b of the zero-phase current transformer 35, and the opposing projection 42d is adapted to the support projection 35c of the zero-phase current transformer 35. Thereby, the central portion 221c of the first conductor plate 221 is supported by the wing portion 42b at one end of the inter-electrode insulating barrier main body 42a, and the second conductor plate 2
22 is supported on the other side of the main body 42a by the wings 42c, respectively, and the central portion 223c of the third conductor plate 223 is supported by the opposing protrusion 42d. Third conductor plate 221-2
23 can be held insulated from each other. That is, by arranging the first to third conductor plates in a substantially π shape as shown in FIG. 3 with respect to the inter-electrode insulating barrier 42, the central portion 221c of the first conductor plate 221 and the second conductor plate 222 Can be simultaneously insulated between the central portion 222c, between the first conductor plate central portion 221c and the third conductor plate 223, and between the second conductor plate central portion 222c and the third conductor plate 223, respectively.
【００１８】このように、極間絶縁バリア４２を零相変
流器３５の内側に配置させ、その極間絶縁バリア４２に
より、零相変流器３５を貫通する夫々の導体板２２１〜
２２３を互いに絶縁できるので、従来技術に比較する
と、夫々の導体板２２１〜２２３をいちいち被覆するこ
とが不要になる。このため、導体板が太くなるのを防止
でき、そのままの導体板を零相変流器３５に貫通するの
で、零相変流器３５に対する貫通作業を容易に行える。
しかも、極間絶縁バリア４２が第一〜第三導体板２２１
〜２２３の位置を夫々相対的に確定させるので、零相変
流器３５自体の性能が安定する。また、上述の如く、導
体板２２１〜２２３が絶縁部品を装着することがないば
かりか、それらが適宜に折り曲げ加工されることによっ
て全体的に小型に形成することが可能となり、このた
め、漏電遮断器内の限られたスペースに容易に配置する
ことができる。As described above, the inter-electrode insulating barrier 42 is arranged inside the zero-phase current transformer 35, and the conductor plates 221 to 221 penetrating the zero-phase current transformer 35 by the inter-electrode insulating barrier 42.
Since the 223 can be insulated from each other, it is not necessary to cover each of the conductor plates 221 to 223 as compared with the related art. For this reason, the conductor plate can be prevented from becoming thick, and the conductor plate as it is penetrates through the zero-phase current transformer 35, so that the work of penetrating the zero-phase current transformer 35 can be easily performed.
In addition, the inter-electrode insulating barrier 42 is formed by the first to third conductor plates 221.
Since the positions of .about.223 are relatively determined, the performance of the zero-phase current transformer 35 itself is stabilized. In addition, as described above, not only are the conductor plates 221 to 223 not fitted with insulating parts, but also they can be formed to be small in size as a whole by appropriately bending them. It can be easily arranged in a limited space in the vessel.
【００１９】図５は本発明の漏電遮断器の他の例を示し
ている。この場合は、零相変流器３５を貫通する第一〜
第三導体板２２１〜２２３が極間絶縁バリア４２によっ
て互いに絶縁状態に保持されている。極間絶縁バリア４
２の構成は前記第一の実施例と同様なので、ここではそ
の説明を省略する。この実施例において前記実施例と異
なるのは、零相変流器３５の漏電検出手段が絶縁ケース
３６に収納され、かつ該絶縁ケース３６が零相変流器３
５に組み込まれた点にある。FIG. 5 shows another example of the earth leakage breaker of the present invention. In this case, the first to the first through the zero-phase current transformer 35
The third conductor plates 221 to 223 are held insulated from each other by the inter-electrode insulating barrier 42. Insulation barrier between poles 4
Since the configuration of the second embodiment is the same as that of the first embodiment, the description is omitted here. This embodiment is different from the above-described embodiment in that the leakage detecting means of the zero-phase current transformer 35 is housed in an insulating case 36 and the insulating case 36 is connected to the zero-phase current transformer 3.
5 in that it is incorporated.
【００２０】即ち、この絶縁ケース３６は、絶縁性の合
成樹脂によりほぼコ字形形状に成形されており、中央部
の本体３６ａが零相変流器３５と接続される漏電検出手
段を収納し得る形状をなすと共に、その本体３６ａに零
相変流器３５自体の上部を収納し得る空間部３６ｂを有
し、また両側の脚部３６ｃ，３６ｄが零相変流器３５を
貫通した第一導体板２２１の中央部分２２１ｃ，第二導
体板２２２の中央部分２２２ｃに夫々挿入されるように
なっている。そして、絶縁ケース３６の一方の脚部３６
ｃを、零相変流器３５の外部に出ている第一導体板２２
１の中央部分２２１ｃに挿入すると共に、他方の脚部３
６ｄを零相変流器３５の外部に出ている第二導体板２２
２の中央部分２２２ｃに挿入し、さらに本体３６ａの空
間部３６ｂに零相変流器３５の上部を収納する如く本体
３６ａを零相変流器３５に被せると、絶縁ケース３６が
零相変流器３５を取り囲むようにしている。That is, the insulating case 36 is formed of an insulating synthetic resin into a substantially U-shape, and the main body 36a at the center can house the leakage detecting means connected to the zero-phase current transformer 35. A first conductor having a shape, a space 36b in its main body 36a capable of accommodating an upper portion of the zero-phase current transformer 35 itself, and legs 36c and 36d on both sides penetrating the zero-phase current transformer 35. The central portion 221c of the plate 221 and the central portion 222c of the second conductor plate 222 are inserted respectively. Then, one leg 36 of the insulating case 36
c, the first conductor plate 22 extending outside the zero-phase current transformer 35.
1 and the other leg 3
6d is the second conductor plate 22 extending outside the zero-phase current transformer 35.
2, the main body 36a is placed over the zero-phase current transformer 35 such that the upper part of the zero-phase current transformer 35 is housed in the space 36b of the main body 36a. The vessel 35 is surrounded.
【００２１】この実施例によれば、絶縁ケース３６が漏
電検出手段を収容し、またこれを組み付けたとき、絶縁
ケース３６が零相変流器３５を取り囲むようにしたの
で、回路に大電流が流れたときの溶着部が零相変流器３
５や漏電検出手段に付着することを防止でき、従って、
零相変流器３５や漏電検出手段を保護することができ
る。なお本例では、漏電検出手段が絶縁ケース３６の本
体３６ａ内に収納された例を示したが、本体３６ａの外
側部であっても良く、何れにしろ絶縁ケース３６によっ
て周囲に対し絶縁されるように配置されても良い。According to this embodiment, the insulating case 36 accommodates the leakage detecting means, and when it is assembled, the insulating case 36 surrounds the zero-phase current transformer 35, so that a large current flows in the circuit. The welding part when flowing is a zero-phase current transformer 3
5 and the leakage detection means can be prevented.
The zero-phase current transformer 35 and the leakage detecting means can be protected. In the present embodiment, the example in which the leakage detecting means is accommodated in the main body 36a of the insulating case 36 has been described. However, the leakage detecting means may be provided on the outer side of the main body 36a. It may be arranged as follows.
【００２２】[0022]
【発明の効果】以上述べたように、本発明によれば、絶
縁バリアが第一〜第三導体板の位置を夫々相対的に確定
させるように構成したので、零相変流器自体の性能が安
定する効果がある。また、絶縁バリアを零相変流器の内
側に配置させ、その絶縁バリアにより、零相変流器を貫
通する夫々の導体を互いに絶縁できるように構成したの
で、従来技術のように夫々の導体のいちいち被覆するこ
とが不要になり、そのままの導体板を零相変流器に貫通
するので、零相変流器に対する貫通作業を容易に行え、
しかも導体を小型に形成できることによって漏電遮断器
内の限られたスペースに容易に配置することができる結
果、零相変流器に対する作業性を高め得ると共に遮断器
全体の小型化を図り得る効果がある。As described above, according to the present invention, since the insulation barrier is configured to relatively determine the positions of the first to third conductor plates, the performance of the zero-phase current transformer itself is improved. Has the effect of stabilizing. Also, since the insulation barrier is arranged inside the zero-phase current transformer, and the insulation barrier is configured so that the conductors penetrating the zero-phase current transformer can be insulated from each other, each conductor can be insulated as in the prior art. It is not necessary to cover each time, and the conductor plate as it is is penetrated through the zero-phase current transformer.
Moreover, since the conductor can be formed in a small size, the conductor can be easily arranged in a limited space in the earth leakage breaker. As a result, the workability for the zero-phase current transformer can be improved, and the size of the entire breaker can be reduced. is there.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の漏電遮断器の第一の実施例を示す全体
断面図である。FIG. 1 is an overall sectional view showing a first embodiment of an earth leakage breaker according to the present invention.
【図２】夫々の導体板と絶縁バリアと零相変流器との関
係を示す分解斜視図である。FIG. 2 is an exploded perspective view showing a relationship among respective conductor plates, an insulating barrier, and a zero-phase current transformer.
【図３】零相変流器に導体板と絶縁バリアとを組み込ん
だ状態を示す正面図である。FIG. 3 is a front view showing a state in which a conductor plate and an insulating barrier are incorporated in a zero-phase current transformer.
【図４】図３のＡ−Ａ線に沿う断面図である。FIG. 4 is a sectional view taken along line AA of FIG. 3;
【図５】本発明の漏電遮断器の他の実施例を示す説明図
である。FIG. 5 is an explanatory view showing another embodiment of the earth leakage breaker of the present invention.
【図６】従来の漏電遮断器の一構成例を示す一部破断の
正面図である。FIG. 6 is a partially cutaway front view showing a configuration example of a conventional earth leakage breaker.
【図７】同じく一部破断の側面図である。FIG. 7 is a partially broken side view of the same.
１１…ケース、１２…カバー、１４…固定接点、１５…
可動接点、２２…導体、２２１…第一導体板、２２２…
第二導体板、２２３…第三導体板、２５…フック、２７
…トリップ金具、２９…引外しレバー、３０…動作棒、
３２…各極共通のリレー軸、３５…零相変流器、３６…
絶縁ケース、４０…リンク機構部、４２…極間絶縁バリ
ア。11 ... case, 12 ... cover, 14 ... fixed contact, 15 ...
Movable contact, 22 ... conductor, 221 ... first conductor plate, 222 ...
Second conductor plate, 223 ... third conductor plate, 25 ... hook, 27
… Trip bracket, 29… trip lever, 30… operating rod,
32: relay shaft common to each pole, 35: zero-phase current transformer, 36 ...
Insulating case, 40 ... Link mechanism part, 42 ... Inter-electrode insulating barrier.
Claims (2)
導体と第二の板状導体と第三の板状導体とが貫通する漏
電遮断器において、上記導体の上記導体貫通孔に配設さ
れた絶縁バリアを備え、この絶縁バリアは上記導体貫通
孔の略中央部に設けられて上記第一の板状導体と上記第
二の板状導体とを絶縁する本体部と、この本体部の一端
に形成されて上記第一の板状導体の端面および上記第二
の板状導体の端面に沿って延びるととともに上記第一の
板状導体および上記第二の板状導体と上記第三の板状導
体とを絶縁する翼部とを有し、上記第一の板状導体と上
記第二の板状導体と上記第三の板状導体の位置をそれぞ
れ相対的に確定させるように構成されたことを特徴とす
る漏電遮断器。1. An earth leakage circuit breaker in which a first plate-like conductor, a second plate-like conductor and a third plate-like conductor penetrate through a conductor through hole of a zero-phase current transformer. A main body that is provided at a substantially central portion of the conductor through hole and insulates the first plate-shaped conductor and the second plate-shaped conductor from each other; The first plate-shaped conductor and the second plate-shaped conductor are formed at one end of the main body and extend along the end surface of the first plate-shaped conductor and the end surface of the second plate-shaped conductor. And a wing part that insulates the third plate-shaped conductor from each other. The positions of the first plate-shaped conductor, the second plate-shaped conductor, and the third plate-shaped conductor are relatively determined. An earth leakage circuit breaker, characterized in that the earth leakage breaker is configured to be operated.
導体と第二の板状導体と第三の板状導体とが貫通する漏
電遮断器において、上記導体の上記導体貫通孔に配設さ
れた絶縁バリアを備え、上記第一の板状導体と上記第二
の板状導体と上記第三の板状導体とは上記導体貫通孔内
で略π字状に配設され、上記絶縁バリアは上記導体貫通
孔の略中央部に配設されて上記第一の板状導体と上記第
二の板状導体と上記第三の板状導体とを互いに絶縁する
ように構成されたことを特徴とする漏電遮断器。2. A circuit breaker in which a first plate conductor, a second plate conductor, and a third plate conductor penetrate a conductor penetration guide of a zero-phase current transformer. An insulating barrier provided in the hole, wherein the first plate-shaped conductor, the second plate-shaped conductor, and the third plate-shaped conductor are disposed in a substantially π shape in the conductor through-hole. The insulating barrier is arranged at a substantially central portion of the conductor through hole, and is configured to insulate the first plate-shaped conductor, the second plate-shaped conductor, and the third plate-shaped conductor from each other. Earth leakage breaker characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04588498A JP3418674B2 (en) | 1998-02-26 | 1998-02-26 | Earth leakage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04588498A JP3418674B2 (en) | 1998-02-26 | 1998-02-26 | Earth leakage breaker |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24165591A Division JP3418627B2 (en) | 1991-09-20 | 1991-09-20 | Earth leakage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10208610A true JPH10208610A (en) | 1998-08-07 |
| JP3418674B2 JP3418674B2 (en) | 2003-06-23 |
Family
ID=12731675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04588498A Expired - Lifetime JP3418674B2 (en) | 1998-02-26 | 1998-02-26 | Earth leakage breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3418674B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008262935A (en) * | 2008-08-07 | 2008-10-30 | Fuji Electric Fa Components & Systems Co Ltd | Ground fault breaker |
| DE102004024820B4 (en) * | 2003-05-21 | 2013-05-23 | Fuji Electric Fa Components & Systems Co., Ltd. | Ground fault interrupter switch |
| KR200483830Y1 (en) * | 2016-02-23 | 2017-06-29 | 엘에스산전 주식회사 | Assembly of adjusting dial and trip crossbar for molded case circuit breaker |
-
1998
- 1998-02-26 JP JP04588498A patent/JP3418674B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004024820B4 (en) * | 2003-05-21 | 2013-05-23 | Fuji Electric Fa Components & Systems Co., Ltd. | Ground fault interrupter switch |
| JP2008262935A (en) * | 2008-08-07 | 2008-10-30 | Fuji Electric Fa Components & Systems Co Ltd | Ground fault breaker |
| KR200483830Y1 (en) * | 2016-02-23 | 2017-06-29 | 엘에스산전 주식회사 | Assembly of adjusting dial and trip crossbar for molded case circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3418674B2 (en) | 2003-06-23 |
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