JP4736949B2 - Earth leakage breaker - Google Patents
Earth leakage breaker Download PDFInfo
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- JP4736949B2 JP4736949B2 JP2006142202A JP2006142202A JP4736949B2 JP 4736949 B2 JP4736949 B2 JP 4736949B2 JP 2006142202 A JP2006142202 A JP 2006142202A JP 2006142202 A JP2006142202 A JP 2006142202A JP 4736949 B2 JP4736949 B2 JP 4736949B2
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- 239000004020 conductor Substances 0.000 claims description 152
- 230000004888 barrier function Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 3
- 230000005405 multipole Effects 0.000 claims description 2
- 230000018199 S phase Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 2
- 229910001219 R-phase Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/06—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by current falling below a predetermined value
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
- H01H83/142—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with bimetal elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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Description
本発明は、低電圧配電系統に適用する漏電遮断器に関し、詳しくは遮断器に搭載した零相変流器に対する主回路導体(一次導体)の配線構造に係わる。 The present invention relates to an earth leakage circuit breaker applied to a low voltage distribution system, and more particularly to a wiring structure of a main circuit conductor (primary conductor) for a zero-phase current transformer mounted on the circuit breaker.
頭記の漏電遮断器は、配線用遮断器と同様な過電流保護機能部品のほかに、主回路を一次導体として主回路の漏洩電流を検出する零相変流器を搭載しており、この零相変流器に対し、本体ケースの端子台に配列した各極の負荷側端子に連なる主回路導体を零相変流器の環状コアに貫通させて引き回し配線するようにしている。 In addition to the overcurrent protection functional parts similar to the circuit breaker for wiring, the earth leakage breaker described above is equipped with a zero-phase current transformer that detects the leakage current of the main circuit using the main circuit as the primary conductor. For the zero-phase current transformer, the main circuit conductor connected to the load-side terminal of each pole arranged on the terminal block of the main body case is routed through the annular core of the zero-phase current transformer.
また、漏電遮断器の機種として三相3線式回路に適用する3極仕様の漏電遮断器、および三相4線式回路に適用する4極仕様の漏電遮断器があり、4極の遮断器では中性線に対応するN相分が追加されるために、零相変流器の環状コアに通す主回路導体(一次導体)の数が3極の遮断器と比べて1本多くなる。
この場合に、3極の漏電遮断器,4極の漏電遮断器に対し、零相変流器の一次導体として環状コアに貫通する端子導体を共用化して部品コストの低減化,遮断器のコンパクト化を図るように、端子導体を2種類の展開寸法部品に標準化して構成した配線構造が知られている(例えば、特許文献1参照)。
In addition, there are three-pole type earth leakage circuit breakers applicable to three-phase three-wire circuits and four-pole type earth leakage breakers applicable to three-phase four-wire circuits. Then, since the N-phase portion corresponding to the neutral wire is added, the number of main circuit conductors (primary conductors) passing through the annular core of the zero-phase current transformer is increased by one as compared with the three-pole circuit breaker.
In this case, the terminal conductor that penetrates the annular core as the primary conductor of the zero-phase current transformer is shared with the 3-pole earth leakage breaker and 4-pole earth leakage breaker to reduce the component cost, and the circuit breaker is compact. A wiring structure in which terminal conductors are standardized to two types of developed dimension parts is known (see, for example, Patent Document 1).
次に、3極の漏電遮断器を例にその組立構造を図9に、また前記特許文献1に開示されている3極,および4極に対応する端子導体の配線構造を図10,図11に示す。
まず、図9において、1は遮断器の本体ケース(モールド樹脂ケースでカバーは省略している)、2R,2S,2Tは本体ケース1の負荷側端子台1aに端子部を左右配列してケース内部に引き回し配線したR,S,T各相の端子導体、3は主回路接点の開閉機構部、4は電流遮断部の消弧装置、5は操作ハンドル、6は過電流引外し装置、7は零相変流器、8は漏電検出回路、9はトリップコイルユニットであり、図10で示すように各相の端子導体2R,2S,2Tの端子部に連なる導体2R−1,2S−1,2T−1をU字状に屈曲成形した上で零相変流器7の環状コアを貫通させて本体ケース1の内部に引き回し配線し、各相の導体2R−1,2S−1,2T−1の後端には過電流引外し装置(バイメタルのヒータ)が接続されている。
Next, FIG. 9 shows an assembly structure of a three-pole earth leakage breaker as an example, and FIG. 10 and FIG. 11 show wiring structures of terminal conductors corresponding to the three and four poles disclosed in
First, in FIG. 9, 1 is a main body case of a circuit breaker (a cover is omitted with a molded resin case), 2R, 2S, and 2T are cases in which terminal portions are arranged on the load
ここで、端子導体2Rと2Sは同じ展開寸法で形状が逆向きなU字状の導体部品で、零相変流器1の環状コアを貫通する部位でU字状の導体2R−1と2S−1とが逆方向から向かい合うように嵌挿配置されている。また、端子導体2Tはその導体2T−1の長さを前記端子導体2Rと2Sよりも長く設定し、端子導体2Sと同じ方向から導体2S−1の内側に重なって並ぶように配置している。
Here, the
一方、図11に示す4極の漏電遮断器に適用する配線構造では、三相4線式回路の中性線に対応するN相の端子導体2Nが端子台1aの右端側に追加されている。ここで、端子台1aの両端に配した端子導体2R,2Nには図10における端子導体2Tと同じ展開寸法で形状が逆向きになるU字状の導体部品を、また端子導体2S,2Tには図10における端子導体2Rと2Sと同じ形状の導体部品を採用し、端子導体2R,2Nの導体2R−1,2N−1を端子導体2S,2Tの導体2S−1,2T−1の内側に重なるように並べて嵌挿配置している。
ところで、先記した端子導体の配線構造では次記のような問題点がある。すなわち、図10では零相変流器7の環状コア貫通部位で端子導体2Sの導体2S−1と端子導体2Tの導体2T−1とが導体厚み方向で内外に重なり合い、また図11では端子導体2R/2Sおよび2T/2Nの導体同士が導体厚み方向で内外に重なりなっている。そのために、零相変流器7を含めて各相の端子導体が占める前後方向の寸法dが大きくなり、その分だけ本体ケース1に収納する他の部品(過電流引外し装置,開閉機構部,電流遮断部など)を収納するスペースの確保が制約されて遮断器の外形サイズが大きくなる。
Incidentally, the above-described terminal conductor wiring structure has the following problems. That is, in FIG. 10, the
本発明は上記の点に鑑みなされたものであり、その目的は零相変流器に嵌挿する負荷側の主回路端子導体(一次導体)について、3極と4極とで端子導体の部品共用化を図りつつ、零相変流器を含めた端子導体の組立体が占有する奥行き寸法を最小限に抑えてコンパクト化が図れるように改良した漏電遮断器を提供することを目的とする。 The present invention has been made in view of the above points, and an object of the present invention is to provide a terminal conductor component in three and four poles for a load-side main circuit terminal conductor (primary conductor) to be inserted into a zero-phase current transformer. An object of the present invention is to provide an earth leakage circuit breaker which is improved so that it can be made compact while minimizing the depth dimension occupied by the assembly of terminal conductors including a zero-phase current transformer while minimizing the common use.
上記目的を達成するために、本発明によれば、本体ケースに主回路の接点開閉部,主回路を一次導体とする零相変流器を搭載した多極漏電遮断器で、本体ケースの負荷側端子台に配列した各極の端子導体を零相変流器の環状コアに貫通させて本体ケース内部に引き回し配線したものにおいて、
主回路の中性線に対応するN相の端子導体を除き、R,S,T相の端子導体はそのコア貫通部位をU字状に屈曲形成した上で、零相変流器に環状コアの内周周縁に沿って嵌挿配置し、N相の端子導体は二枚の導体部品に分割し、かつその分割導体部品を環状コアの前後両側に分けて他のR,S,T相端子導体の配線経路と重なりあわないよう位置をずらして同じ面上に配置した上で、その接続端部を環状コアの内周中央位置で互いに前後から突き合わせて接続するようにし(請求項1)、具体的にはその配線構造を次記のような態様で構成する。
(1)前記のN相端子導体について、その分割導体部品の接続端部同士を零相変流器の環状コア内周側でねじ締結して相互接続する(請求項2)。
(2)R,S,T各相の端子導体を3極および4極仕様の共用部品として、4極仕様の遮断器ではN相導体の端子部を、R,S,T各相導体の端子部と並べて本体ケース端子台の左右いずれかの端部に配置して構成する(請求項3)。
(3)零相変流器の環状コアに対し、その前後からコアに嵌入して各相端子導体の間を隔離した位置に保持する絶縁バリア部材を備え(請求項4)、その絶縁バリア部材を前後に二分割した角状フレームで構成し、零相変流器に各相端子導体を組み付けた状態で前記角状フレームを環状コアの内周に前後から嵌入して各相の導体を隔離保持させるようにする(請求項5)。
In order to achieve the above object, according to the present invention, there is provided a multi-pole earth leakage breaker having a main body case equipped with a contact switching part of a main circuit and a zero-phase current transformer having a main circuit as a primary conductor. In what is wired by routing the terminal conductor of each pole arranged on the side terminal block through the annular core of the zero-phase current transformer and inside the main body case,
With the exception of the N-phase terminal conductor corresponding to the neutral line of the main circuit, the R, S, and T-phase terminal conductors are bent into a U-shape at the core penetration portion, and then the annular core is connected to the zero-phase current transformer. The N-phase terminal conductor is divided into two conductor parts, and the divided conductor parts are divided into the front and rear sides of the annular core to provide other R, S, T-phase terminals. After shifting the position so that it does not overlap with the wiring path of the conductor and arranging them on the same surface, the connecting end portions are butted against each other from the front and rear at the center of the inner periphery of the annular core (Claim 1). Specifically, the wiring structure is configured in the following manner.
(1) About the said N phase terminal conductor, the connection end parts of the division | segmentation conductor components are screw-fastened on the annular core inner peripheral side of a zero phase current transformer, and are mutually connected (Claim 2).
(2) The terminal conductor for each phase of R, S, T is a common part for 3 poles and 4 poles, and for the circuit breaker for 4 poles, the terminal part of N phase conductor is the terminal for each of R, S, T phase conductors It is arranged side by side and arranged at either the left or right end of the main body case terminal block (claim 3).
(3) An insulating barrier member is provided for the annular core of the zero-phase current transformer, which is inserted into the core from the front and rear to hold the phase terminal conductors in a separated position (Claim 4). Is composed of a rectangular frame divided into two parts in the front and rear, and with each phase terminal conductor assembled to a zero-phase current transformer, the rectangular frame is fitted from the front and back to the inner periphery of the annular core to isolate the conductors of each phase. It is made to hold | maintain (Claim 5).
上記の構成によれば、3極漏電遮断器に適用して零相変流器の環状コアに嵌挿するR,S,T各相の端子導体を共用部品として、4極漏電遮断器に適用する場合には、R,S,T相の配線構造をそのまま採用し、これにN相の端子導体を追加するだけで簡単に対応できる。しかも、N相の端子導体は他相の端子導体と導体厚さ方向に重ならないよう配線経路をずらして各相の導体が同一面上に並ぶようにしているので、零相変流器を含む端子導体の配線構造が占める奥行き寸法を最小限に抑えて、同じ本体ケース内に搭載する他の機能部品の収納スペースを拡大できる。 According to said structure, it applies to a 4-pole earth-leakage circuit breaker by using the terminal conductor of R, S, T each phase fitted to the annular core of a zero-phase current transformer as a shared component, applying to a 3-pole earth-leakage circuit breaker In this case, the R, S, and T-phase wiring structure can be used as it is, and an N-phase terminal conductor can be simply added thereto. In addition, the N-phase terminal conductor is arranged so that the conductors of the respective phases are arranged on the same plane by shifting the wiring path so as not to overlap with the terminal conductors of the other phases in the conductor thickness direction, so that a zero-phase current transformer is included. By minimizing the depth dimension occupied by the wiring structure of the terminal conductor, it is possible to expand the storage space for other functional components mounted in the same main body case.
また、N相の端子導体を二枚の導体部品に分割して環状コアの前後両側に配置した上で、その接続端部を零相変流器の環状コアの内周中央に突き合わせてねじ締結することにより、端子導体の組立作業性が向上し、さらに零相変流器の環状コアに対しその前後からコアの内周穴に嵌入して各相の端子導体間を隔離した位置に保持する絶縁バリア部材を備えたことで、各相の端子導体を接触のおそれなしに所定位置に安定保持されるとともに、各相導体端子の絶縁沿面距離を確保できる。 In addition, the N-phase terminal conductor is divided into two conductor parts and arranged on both the front and rear sides of the annular core, and then the connection end is brought into contact with the inner peripheral center of the annular core of the zero-phase current transformer and screwed. As a result, the assembly workability of the terminal conductors is improved, and further, the annular core of the zero-phase current transformer is inserted into the inner peripheral hole of the core from the front and back to hold the terminal conductors of each phase in a separated position. By providing the insulating barrier member, the terminal conductor of each phase is stably held at a predetermined position without fear of contact, and the insulation creepage distance of each phase conductor terminal can be secured.
以下、本発明の実施の形態を図1〜図8に示す実施例に基づいて説明する。なお、実施例の図中で図9〜図11に対応する部材には同じ符号を付してその説明は省略する。
まず、4極漏電遮断器の零相変流器に適用する一次導体の配線構造を図1〜図6に示す。この実施例では図2に示す漏電遮断器の本体ケース1に対して、その負荷側の端子台1aには左側から順にN相,R相,S相,T相に対応する端子導体2N,2R,2S,2Tを配列し、その端子部に連なる導体が零相変流器7の環状コアを貫通して本体ケース内部に引き回し配線されている。
Hereinafter, embodiments of the present invention will be described based on the examples shown in FIGS. In addition, in the figure of an Example, the same code | symbol is attached | subjected to the member corresponding to FIGS. 9-11, and the description is abbreviate | omitted.
First, the wiring structure of the primary conductor applied to the zero-phase current transformer of the quadrupole earth leakage breaker is shown in FIGS. In this embodiment, with respect to the
ここで、R,S,T相に対応する端子導体2R,2S,2Tは3極漏電遮断器にも適用可能な共用部品であり、各端子導体は零相変流器7の環状コアを貫通する部位がU字状に屈曲形成されている。すなわち、U相の端子導体2R,およびT相の端子導体2Tはその導体2R−1,2T−1が端子部から零相変流器7に向けて横方向に延在し、その中間部位が互いに逆向きにU字状に屈曲形成されている。これに対して、S相の端子導体2Sはその導体2S−1か端子部から縦向きに延在してその中間部位がU字状に屈曲形成されており、図1(b),図3に示す組立状態で、各相の導体2R−1,2S−1,2T−1が同一面上に並ぶようにしている。
Here, the
一方、N相の端子導体2Nの導体は、端子部に連なる前部側の導体2N−1aと、後部側の導体2N−1bに分割されており、その配線経路は図3で示すようにR,S,T各相の端子導体と前後に重なり合わないように端子導体2R,2Sの上側を迂回し、その組立状態で他相の端子導体と同一面上に並ぶよう形成されている(図1(b)参照)。また、各分割導体2N−1a,2N−1bの先端には前後から零相変流器7のコア内周に嵌入して突き合わせるタブ状の接続端部2N−2が形成されており、この接続端部の板面には締結ねじ10を通すねじ穴が開口している。
On the other hand, the conductor of the N-
また、図示実施例では、前記の各端子導体部品とは別に、零相変流器7の環状コアに嵌挿した各相の端子導体を所定位置に隔離保持する絶縁バリア部材として、零相変流器7の前後から環状コアに嵌入する角状フレーム11,12が用意されている。
次に、前記した各部品を零相変流器7に組み付ける組立作業の手順を図1(a),図5,図6を参照して説明する。まず、図1(a)の分解状態から、端子導体2R,2TのU字状導体2R−1,2T−1を零相変流器7の環状コアに左右から嵌挿する。次に、N相端子導体2Nの後部側分割導体2N−1bを環状コアの背後側に重ね、その接続端部2N−2を環状コアの内周中央に嵌入する。続いて分割導体2N−1bの背後側から絶縁バリア部材の角状フレーム12を環状コアの内周に嵌入し、分割導体2N−1bの接続端部2N−2を取り囲む。この組立段階の状態を図5に示す。
In addition, in the illustrated embodiment, a phase change conductor is used as an insulating barrier member that separates and holds the terminal conductor of each phase inserted into the annular core of the zero
Next, an assembling procedure for assembling the above-described components to the zero-phase
次に、零相変流器7の前方側から端子導体2Nの分割導体2N−1aを環状コアに重ねてタブ状の接続端部2N−2をコア内周に嵌入し、この位置で接続端部2N−2同士を前後に突き合わせる。続いて、接続端部2N−2の突き合わせ部に前方から締結ねじ10を螺合して前部側の分割導体2N−1aと後部側の分割導体2N−1bを相互接続する。この組立段階の状態を図6に示す。
Next, the
この組立段階から、次にS相の端子導体2SのU字状導体2S−1を環状コアの内周縁と前記接続端部2N−2との間に残っている隙間に嵌挿し、最後に前方から角状フレーム11を環状コアの内周に嵌入して図3の組立状態が完成する。
次に、零相変流器7の環状コアに嵌挿した各相の端子導体,および絶縁バリア部材の配置を図4に示す。この図から判るように、環状コアの内周中央にN相端子導体の接続端部2N−2が位置し、この接続端部2N−2を囲むようにR,S,T各相の導体2R−1,2S−1,2T−1がコア内周に沿って左右,および下側に配列しており、各導体の相互間が接触しないように絶縁バリア部材によって隔離されている。
From this assembly stage, the
Next, FIG. 4 shows the arrangement of the terminal conductors of each phase and the insulating barrier members inserted into the annular core of the zero-phase
上記の組立構造では、図1(b)で示すように零相変流器7に嵌挿してその前後面側に引き回した各相の端子導体同士が前後に重なり合わないで同一面上に並んでいる。これにより、図11に示した配線構造と比べて、零相変流器を含む導体の奥行き寸法dを縮減できる。
なお、図示例ではN相の端子導体2Nを図2に示した本体ケース端子台1aの左端側に配置しているが、これとは逆にN相の端子導体2Nを端子台1aの右端に配置して負荷側端子をR,S,T,N相の順に配列することも可能である。この場合には端子導体2Nを図示例と対称な形状とする。
In the above assembly structure, as shown in FIG. 1B, the terminal conductors of the respective phases that are inserted into the zero-phase
In the illustrated example, the N-
次に、前記したR,S,T相の端子導体2R,2S,2Tを共用部品として3極漏電遮断器に適用した零相変流器7の一次導体配線構造を図7,図8に示す。この組立構造でも端子導体組立体の奥行き寸法は図1(b)に示した寸法dと同じである。
Next, FIGS. 7 and 8 show the primary conductor wiring structure of the zero-phase
1 遮断器の本体ケース
2R,2S,2T R,S,T相の端子導体
2R−1,2S−1,2T−1 U字状導体
2N N相の端子導体
2N−1a,2N−1b 分割導体
2N−2 接続端部
7 零相変流器
10 締結ねじ
11,12 角状フレーム(絶縁バリア)
1
Claims (5)
主回路の中性線に対応するN相の端子導体を除き、R,S,T相の端子導体はそのコア貫通部位をU字状に屈曲形成した上で、零相変流器に環状コアの内周周縁に沿って嵌挿配置し、N相の端子導体は二枚の導体部品に分割し、かつその分割導体部品を環状コアの前後両側に分けて他のR,S,T相端子導体の配線経路と重なりあわないよう位置をずらして同じ面上に配置した上で、その接続端部を環状コアの内周中央位置で互いに前後から突き合わせて接続したことを特徴とする漏電遮断器。 This is a multi-pole earth leakage circuit breaker equipped with a main circuit contact opening / closing part and a zero-phase current transformer with the main circuit as the primary conductor. Zero terminal conductors are arranged on the load side terminal block of the main body case. In what is wired through the body case through the annular core of the phase current transformer,
With the exception of the N-phase terminal conductor corresponding to the neutral line of the main circuit, the R, S, and T-phase terminal conductors are bent into a U-shape at the core penetration portion, and then the annular core is connected to the zero-phase current transformer. The N-phase terminal conductor is divided into two conductor parts, and the divided conductor parts are divided into the front and rear sides of the annular core to provide other R, S, T-phase terminals. An earth leakage circuit breaker characterized in that it is arranged on the same surface while being shifted in position so as not to overlap with the wiring path of the conductor, and its connection end portions are butted against each other from the front and back at the center of the inner periphery of the annular core. .
Priority Applications (4)
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JP2006142202A JP4736949B2 (en) | 2006-05-23 | 2006-05-23 | Earth leakage breaker |
KR1020070025883A KR100885600B1 (en) | 2006-05-23 | 2007-03-16 | Earth leakage breaker |
TW096109509A TWI348174B (en) | 2006-05-23 | 2007-03-20 | Earth leakage breaker |
CN200710104878XA CN101079354B (en) | 2006-05-23 | 2007-05-23 | Residual current circuit breaker |
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JP2006142202A JP4736949B2 (en) | 2006-05-23 | 2006-05-23 | Earth leakage breaker |
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JP4736949B2 true JP4736949B2 (en) | 2011-07-27 |
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KR (1) | KR100885600B1 (en) |
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EP3109884A4 (en) * | 2014-02-17 | 2017-11-08 | Fuji Electric FA Components & Systems Co. Ltd. | Leakage current detection unit and leakage current breaker |
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KR200454586Y1 (en) | 2009-03-11 | 2011-07-12 | 엘에스산전 주식회사 | Earth leakage trip mechanism assembly for earth leakage breaker |
KR200455960Y1 (en) | 2009-10-06 | 2011-10-05 | 엘에스산전 주식회사 | Trip device of circuit breaker |
CN102290292B (en) * | 2011-06-28 | 2012-11-07 | 常熟开关制造有限公司(原常熟开关厂) | Aftercurrent protection circuit breaker |
JP6237533B2 (en) * | 2014-08-22 | 2017-11-29 | 三菱電機株式会社 | Earth leakage breaker |
CN108574160B (en) * | 2018-06-01 | 2024-09-10 | 浙江中凯科技股份有限公司 | Conductive device for controlling and protecting switch electric appliance |
JP7289100B2 (en) * | 2019-07-22 | 2023-06-09 | パナソニックIpマネジメント株式会社 | Earth leakage protector and distribution board |
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JPS488019Y1 (en) * | 1968-08-14 | 1973-03-02 | ||
JP2764638B2 (en) * | 1990-05-18 | 1998-06-11 | 津田駒工業株式会社 | Weaving method such as satin stripe fabric |
JP2988062B2 (en) * | 1991-10-22 | 1999-12-06 | 富士電機株式会社 | Insulation structure of primary conductor of zero-phase current transformer |
JP3210820B2 (en) * | 1994-11-15 | 2001-09-25 | 松下電工株式会社 | Earth leakage breaker |
JP3228039B2 (en) * | 1994-12-28 | 2001-11-12 | 三菱電機株式会社 | Earth leakage breaker |
JP3232211B2 (en) * | 1995-05-26 | 2001-11-26 | 松下電工株式会社 | Earth leakage breaker |
JPH0992127A (en) * | 1995-09-19 | 1997-04-04 | Hitachi Ltd | Earth leakage breaker |
JP4037094B2 (en) * | 2001-11-29 | 2008-01-23 | 三菱電機株式会社 | Earth leakage breaker |
JP2004095222A (en) * | 2002-08-29 | 2004-03-25 | Fuji Electric Fa Components & Systems Co Ltd | Ground fault interrupter |
KR100510715B1 (en) * | 2003-01-14 | 2005-08-31 | 엘에스산전 주식회사 | leakage circuit breaker |
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2006
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EP3109884A4 (en) * | 2014-02-17 | 2017-11-08 | Fuji Electric FA Components & Systems Co. Ltd. | Leakage current detection unit and leakage current breaker |
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KR20070113101A (en) | 2007-11-28 |
JP2007317362A (en) | 2007-12-06 |
TWI348174B (en) | 2011-09-01 |
KR100885600B1 (en) | 2009-02-24 |
CN101079354A (en) | 2007-11-28 |
TW200744117A (en) | 2007-12-01 |
CN101079354B (en) | 2010-06-09 |
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