JP2004088831A - Distribution board - Google Patents

Distribution board Download PDF

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Publication number
JP2004088831A
JP2004088831A JP2002243142A JP2002243142A JP2004088831A JP 2004088831 A JP2004088831 A JP 2004088831A JP 2002243142 A JP2002243142 A JP 2002243142A JP 2002243142 A JP2002243142 A JP 2002243142A JP 2004088831 A JP2004088831 A JP 2004088831A
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JP
Japan
Prior art keywords
bus bar
branch
conductor
bar conductor
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002243142A
Other languages
Japanese (ja)
Inventor
Minoru Shinoda
篠田 実
Eiichi Hiyama
檜山 栄一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOKUBU DENKI KK
Original Assignee
KOKUBU DENKI KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KOKUBU DENKI KK filed Critical KOKUBU DENKI KK
Priority to JP2002243142A priority Critical patent/JP2004088831A/en
Publication of JP2004088831A publication Critical patent/JP2004088831A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To improve reliability of a distribution board comprising multiple branch breakers while a cost is reduced by reducing the number of screwing points for electrical connection between a bus bar conductor and multiple branch breakers. <P>SOLUTION: A bus bar conductor is provided with a prescribed number of branch connection pieces protruding integrally from its side at a prescribed interval. The branch connection piece of the bus bar conductor is directly screwed to a connection terminal of the branch breaker so that the branch breaker is connected to the bus bar conductor, resulting in eliminated screwing between the bus bar conductor and the branch connection piece. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、多数の負荷回路へ給電を行う分電盤に関する。
【0002】
【従来の技術】
従来の分電盤は、図5に示すように、単相3線式の3本の並行して配設された母線バー導体11、12、13の両側に対向して2極の分岐ブレーカ14を複数設置し、各ブレーカの接続端子と母線バー導体とを分岐バー導体15および16を介して接続するようにしている。分岐バー導体15は,中性相用の分岐導体であり、その中間点がねじ18によって中性相の母線バー導体12に締付け結合され、両端がそれぞれ両側の分岐ブレーカ14の一方の接続端子にそれぞれ取付ねじ19によってねじ止めされている。
【0003】
また、分岐バー導体16、17は、電圧相用の分岐導体であり、それぞれの一方端がR相とT相の電圧相母線バー導体11および13に取付ねじ18によって締付け結合され、他方端が分岐ブレーカ14の他方の接続端子にねじ19によってねじ止めされている。
【0004】
【発明が解決しようとする課題】
このような分電盤において、母線バー導体と分岐ブレーカとの接続を母線バー導体とは別体で構成された分岐バー導体をねじ止めして行うので分岐回路が増加するほど接続部品の個数が増加し、ねじ止めによる電気的接続個所の数も多くなる。
【0005】
このため、従来の分電盤は、部品点数が多くなることおよび組立て時の組立て工数が多大となることにより組立てコストが高価となる不都合がある。また、ねじ止めによる電気的接続個所が多いため、ねじの締め付け不足等による接続不良が発生する機会も増大し、分電盤の信頼性が低くなる不都合もある。
【0006】
この発明は、このような不都合を除くために、安価で、接続不良の発生しにくい、したがって信頼性の高い分電盤を提供することを課題とするものである。
【0007】
【課題を解決するための手段】
この発明は、前記の課題を解決するため、電源の各相に接続された母線バー導体を複数本互いに並行に配置し、これらの母線バー導体の少なくとも一方の側に、複数個の分岐ブレーカを母線バー導体と並行に配列し、各分岐ブレーカをそれぞれ母線導体に電気的に接続し、これらの分岐ブレーカからそれぞれ負荷回路に給電するようにした分電盤において、前記各母線バー導体の側辺に、これから外側に張り出して一体的に形成された分岐接続片を所定の間隔を置いて所定数設け、これらの分岐導体片の先端を前記分岐ブレーカの接続端子に直接接続することにより母線と分電盤との電気的接続を行うことを特徴とするものである。
【0008】
この発明において、母線バー導体が単相3線式に構成されている場合、中央の中性相の母線バー導体には両側辺にこれから一体的に張り出して形成された分岐接続片を複数所定間隔をおいて設け、両側の電圧相の母線バー導体には外側に向いた方の側辺にこれから一体的に張り出して形成された分岐接続片を複数所定間隔をおいて設けるようにする。
【0009】
また、この発明において、前記母線バー導体には電源端子および分岐ブレーカの接続端子に接続される部分を除いて絶縁被覆を施すのがよい。
【0010】
【発明の実施の形態】
この発明の実施の形態を、図に示す実施例について説明する。
【0011】
図1の(a)および、(b)は、この発明による単相3線配電方式の分電盤の主要部示す正面図および下面図である。この図において、1はR電圧相の母線バー導体、2は中性相の母線バー導体、T電圧相の母線バー導体であり、互いに接触しないように間隔をおいて並行に配置され、上端の接続端子部1t、2t、3tに、系統電源に接続された図示しない主幹ブレーカの負荷側端子に接続される。4は2極の分岐ブレーカ4であり、これら母線バー導体1,2,3の両側に並行して分電盤に固設された取付レール6、6に取り付けら、2母線バー導体の走る方向に所要数配列される。
【0012】
電圧相(R)の母線バー導体1は図2に示すように3次元的に屈曲した形状に形成されている。母線バー導体1の端子部1tに連なる本体部1aの外側の側辺にこれから一体的に張り出して所要数の分岐接続片1bが所定の間隔で設けられている。分岐接続片1bの先端部には止めねじを通すための切欠きが設けられている。
【0013】
もう一方の電圧相(T)の母線バー導体3は、前記の母線バー導体1と左右対称形をなしているので、母線バー導体1を左右反転して使用することができる。
【0014】
中性相(N)の母線バー導体2は、図3に示すように屈曲した形状に形成されている。母線バー導体2の端子部2tに連なって直線的に伸びた本体部2aの両側辺にそれぞれ一体的に外側へ張り出した分岐接続片2bが所要数所定の間隔で設けられている。この分岐接続片2b先端付近が垂直および水平に屈曲して、電圧相の母線バー導体1、3と組合わせて配列したとき、これらの母線バー導体の分岐接続片1b、3bと同じ高さの位置になるようにしている。この母線バー導体2の分岐接続片2bの先端部にも止めねじを通すための切欠きが設けられている。
【0015】
また、母線バー導体1、2、3は、その主幹ブレーカに接続される端子部分1t、2t、3tおよび分岐ブレーカに接続される分岐接続片1b、2b、3bの先端部分を除いて、全体にエポキシ樹脂等の絶縁剤により絶縁被覆Zが施されている。図2および3においては、この絶縁被覆Zは、ハッチングによって示されているが、図1および4においては、図が不明瞭になるのさけるためハッチングによる図示が省略されている。
【0016】
これらの3本の母線バー導体1、2、3は図4に示すように配列し、電圧相の母線バー導体1(3)の分岐接続片1b(3b)と中性相の母線バー導体2の分岐接続片2bとが交互に所定の間隔で、かつその先端が同一線上に並ぶように配置されようにする。このように配置したとき、各母線バー導体の全体が絶縁被覆されているので、相互の絶縁に必要な離間距離を小さくすることができ、相互を接近配置することができる。
【0017】
このように配置された電圧相の母線バー導体1、3および中性相の母線バー導体2に対して分岐ブレーカ4は次のように接続される。図1において左側に配列された分岐ブレーカ4は、それぞれ一方の電源側端子に電圧相(R)の母線バー導体1から張り出した分岐接続片1bが、そして他方の電源側端子に中性相(N)の母線バー導体2から張り出した分岐接続片2bが挿入される位置まで母線バー導体側に押し込まれ、端子ねじ9の締付けによって母線バー導体に電気的および機械的に結合される。母線バー導体1の分岐接続片1bと中性相母線バー導体2の分岐接続片2bとの間隔を分岐ブレーカの接続端子の間隔に等しくなるように選定されるので、分岐ブレーカ4は互いに当接させて配列するようにすると分岐ブレーカの接続端子は母線バー導体の分岐接続片1bおよび2bの位置に一致させることができる。
【0018】
母線バー導体の右側に配列した分岐ブレーカ4も左側の分岐ブレーカと4と同様にして、電圧相母線バー導体3および中性相母線バー導体2に分岐接続片3bおよび2bを介して電気的および機械的に接続される。
【0019】
このように母線バー導体に接続された各分岐ブレーカの母線バー導体の反対側の負荷側端子にそれぞれ負荷回路を接続することにより負荷回路への給電を行うことができる。
【0020】
このような構成によれば、母線バー導体に一体的に分岐ブレーカに接続するための分岐接続片を形成し、これに分岐ブレーカを接続することことにより、分岐ブレーカを分岐接続導体を介することなく母線バー導体に直接接続することができるため、母線バー導体と分岐ブレーカの接続のために、母線バー導体と別体の分岐接続導体が不要になるとともに、ねじ止めによる接続個所が分岐接続片と分岐ブレーカの接続端子の接続部分だけとなり、従来装置に比べて半分となる。
【0021】
【発明の効果】
この発明によれば、電源の各相に接続された母線バー導体を互いに並行に配置し、これらの母線バー導体の側方に、所要個数の分岐ブレーカを母線バー導体と並行に配列し、各分岐ブレーカをそれぞれ母線バー導体に電気的に接続し、これらの分岐ブレーカからそれぞれ負荷回路に給電するようにしてなる分電盤において、前記各母線バー導体の側辺に、これから外側に張り出して一体的に形成された分岐接続片を所定の間隔を置いて所要数設け、これらの分岐導体片の先端を直接前記分岐ブレーカの接続端子にねじ止めにより接続するようにしているので、従来の分岐接続導体が不要になるとともに、母線バー導体と分岐ブレーカを接続するためのねじ止めによる接続個所の個数を従来の装置の半分に減らすことできる。このため、この発明によれば、分岐接続導体が不要になった分部品の点数を減らすことができるので、その分コストが低減され、そして、ねじ止めによる電気的接続個所の締付け力を管理する個所が少なくなり、その減じられた分、分電盤の組立て工数を低減することができるとともに、接続不良の発生する機会も減るので信頼性を高めることができる効果が得られる。
【図面の簡単な説明】
【図1】この発明の実施例による分電盤の要部すもので、(a)はその正面図、(b)はその下面図。
【図2】この発明で使用する電圧相の母線バー導体を示すもので、(a)はその正面図、(b)はその側面図、(c)はその下面図。
【図3】この発明で使用する中性相の母線バー導体を示すもので、(a)はその正面図、(b)はその側面図、(c)はその下面図。
【図4】この発明における母線バー導体の組合わせ配置を示すもので、(a)はその正面図、(b)はその側面図、(c)はその平面図。
【図5】従来の分電盤の要部を示すもので、(a)はその正面図、(b)はその下面図。
【符号の説明】
1        (R)電圧相母線バー導体
2        (N)中性相母線バー導体
3        (T)電圧相母線バー導体
1b、2b、3b 分岐接続片
4        分岐ブレーカ
Z        絶縁被覆
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a distribution board for supplying power to a large number of load circuits.
[0002]
[Prior art]
As shown in FIG. 5, a conventional distribution board includes a two-pole branch breaker 14 opposed to both sides of three parallel bus bar conductors 11, 12, and 13 of a single-phase three-wire system. Are installed, and the connection terminal of each breaker and the bus bar conductor are connected via the branch bar conductors 15 and 16. The branch bar conductor 15 is a neutral phase branch conductor. The intermediate point of the branch bar conductor 15 is fastened to the neutral phase bus bar conductor 12 by a screw 18 and both ends are connected to one connection terminal of the branch breakers 14 on both sides. Each is screwed by a mounting screw 19.
[0003]
The branch bar conductors 16 and 17 are branch conductors for a voltage phase. One end of each of the branch bar conductors 16 and 17 is fastened to the R-phase and T-phase voltage-bar bus bar conductors 11 and 13 by a mounting screw 18, and the other end is The other connection terminal of the branch breaker 14 is screwed by a screw 19.
[0004]
[Problems to be solved by the invention]
In such a distribution board, the connection between the bus bar conductor and the branch breaker is performed by screwing the branch bar conductor formed separately from the bus bar conductor, so that the number of connection parts increases as the number of branch circuits increases. The number of electrical connections by screwing increases.
[0005]
For this reason, the conventional distribution board has a disadvantage that the assembly cost is high due to the large number of components and the large number of assembly steps at the time of assembly. Further, since there are many electrical connection points by screwing, the chance of connection failure due to insufficient screw tightening or the like increases, and the reliability of the distribution board may be reduced.
[0006]
An object of the present invention is to provide a power distribution board which is inexpensive, hardly causes a connection failure, and has high reliability in order to eliminate such inconvenience.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention arranges a plurality of bus bar conductors connected to each phase of the power supply in parallel with each other, and a plurality of branch breakers on at least one side of these bus bar conductors. In a distribution board arranged in parallel with a bus bar conductor, each branch breaker is electrically connected to the bus conductor, and power is supplied to a load circuit from each of the branch breakers, a side edge of each bus bar conductor is provided. A predetermined number of branch connection pieces projecting outward and integrally formed are provided at predetermined intervals, and the ends of these branch conductor pieces are directly connected to the connection terminals of the branch breaker to be separated from the bus bar. It is characterized by making an electrical connection with a power board.
[0008]
In the present invention, when the bus bar conductor is configured as a single-phase three-wire system, a plurality of branch connection pieces formed integrally on both sides of the central neutral-phase bus bar conductor are formed at predetermined intervals. The bus bar conductors of the voltage phases on both sides are provided with a plurality of branch connection pieces which are integrally formed on the side facing outward and are formed at predetermined intervals.
[0009]
In the present invention, it is preferable that the bus bar conductor is coated with an insulating coating except for a portion connected to a power supply terminal and a connection terminal of a branch breaker.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to an embodiment shown in the drawings.
[0011]
FIGS. 1A and 1B are a front view and a bottom view showing a main part of a single-phase three-wire distribution type distribution board according to the present invention. In this figure, 1 is a bus bar conductor of the R voltage phase, 2 is a bus bar conductor of the neutral phase, and a bus bar conductor of the T voltage phase, which are arranged in parallel at an interval so as not to contact with each other. The connection terminals 1t, 2t, 3t are connected to the load-side terminals of a main breaker (not shown) connected to the system power supply. Numeral 4 is a two-pole branch breaker 4, which is mounted on mounting rails 6, 6 fixed to a distribution board in parallel with both sides of the bus bar conductors 1, 2, 3 in the direction in which the two bus bar conductors run. The required number is arranged.
[0012]
The bus bar 1 of the voltage phase (R) is formed in a three-dimensionally bent shape as shown in FIG. A required number of branch connection pieces 1b are provided at predetermined intervals on the outer side of the main body 1a connected to the terminal 1t of the bus bar conductor 1 so as to integrally project therefrom. A notch for passing a set screw is provided at the tip of the branch connection piece 1b.
[0013]
Since the bus bar conductor 3 of the other voltage phase (T) is symmetrical to the bus bar conductor 1 described above, the bus bar conductor 1 can be used by inverting left and right.
[0014]
The bus bar conductor 2 of the neutral phase (N) is formed in a bent shape as shown in FIG. Branch connection pieces 2b integrally projecting outward are provided on both sides of a main body portion 2a extending linearly in a row so as to be continuous with the terminal portion 2t of the bus bar conductor 2 at predetermined intervals. When the vicinity of the tip of the branch connection piece 2b is bent vertically and horizontally and arranged in combination with the bus bars 1 and 3 of the voltage phase, the height of the branch connection pieces 1b and 3b of these bus bar conductors is the same. Position. A notch for passing a set screw is also provided at the tip of the branch connection piece 2b of the bus bar conductor 2.
[0015]
The bus bar conductors 1, 2, and 3 are entirely formed except for the terminal portions 1t, 2t, and 3t connected to the main breaker and the distal end portions of the branch connection pieces 1b, 2b, and 3b connected to the branch breaker. An insulating coating Z is applied by an insulating agent such as an epoxy resin. In FIGS. 2 and 3, the insulating coating Z is indicated by hatching, but in FIGS. 1 and 4, the illustration by hatching is omitted to avoid obscuring the drawings.
[0016]
These three bus bar conductors 1, 2, and 3 are arranged as shown in FIG. 4, and the branch connection piece 1b (3b) of the voltage phase bus bar conductor 1 (3) and the neutral phase bus bar conductor 2 And the branch connection pieces 2b are alternately arranged at a predetermined interval, and their ends are arranged on the same line. When arranged in this manner, since the entire bus bar conductors are covered with insulation, the separation distance required for mutual insulation can be reduced, and the bus bars can be arranged close to each other.
[0017]
The branch breaker 4 is connected to the bus bar conductors 1 and 3 of the voltage phase and the bus bar conductor 2 of the neutral phase arranged as described above as follows. The branch breakers 4 arranged on the left side in FIG. 1 each have a branch connection piece 1b projecting from the bus bar conductor 1 of the voltage phase (R) at one power supply side terminal, and a neutral phase ( N) is pushed into the bus bar conductor side to the position where the branch connection piece 2b projecting from the bus bar conductor 2 is inserted, and is electrically and mechanically coupled to the bus bar conductor by tightening the terminal screws 9. Since the distance between the branch connecting piece 1b of the bus bar conductor 1 and the branch connecting piece 2b of the neutral phase bus bar conductor 2 is selected to be equal to the distance between the connection terminals of the branch breaker, the branch breakers 4 abut each other. When arranged in such a manner, the connection terminals of the branch breakers can be aligned with the positions of the branch connection pieces 1b and 2b of the bus bar conductor.
[0018]
The branch breaker 4 arranged on the right side of the bus bar conductor is also electrically and electrically connected to the voltage phase bus bar conductor 3 and the neutral phase bus bar conductor 2 via the branch connection pieces 3b and 2b in the same manner as the branch breaker 4 on the left side. Connected mechanically.
[0019]
As described above, power can be supplied to the load circuit by connecting the load circuits to the load-side terminals of the branch breakers connected to the bus bar conductors on the opposite sides of the bus bar conductors.
[0020]
According to such a configuration, a branch connection piece for integrally connecting to the branch breaker is formed on the bus bar conductor, and by connecting the branch breaker to the branch connection piece, the branch breaker does not pass through the branch connection conductor. Since it can be directly connected to the bus bar conductor, a separate branch connection conductor from the bus bar conductor is not required to connect the bus bar conductor to the branch breaker, and the connection point by screwing is connected to the branch connection piece. Only the connection portions of the connection terminals of the branch breaker are halved compared to the conventional device.
[0021]
【The invention's effect】
According to the present invention, the bus bar conductors connected to each phase of the power supply are arranged in parallel with each other, and a required number of branch breakers are arranged in parallel to the bus bar conductors on the sides of these bus bar conductors. In a distribution board in which branch breakers are electrically connected to the bus bar conductors, respectively, and power is supplied to the load circuits from these branch breakers, the distribution breakers protrude outward from sides of the respective bus bar conductors and are integrally formed. The required number of branch connection pieces formed in a predetermined manner are provided at predetermined intervals, and the ends of these branch conductor pieces are directly connected to the connection terminals of the branch breaker by screwing. The conductor is not required, and the number of connection points by screwing for connecting the bus bar conductor and the branch breaker can be reduced to half of the conventional device. Therefore, according to the present invention, the number of components can be reduced by eliminating the need for the branch connection conductor, so that the cost is reduced by that amount, and the tightening force of the electrical connection portion by screwing is managed. Since the number of locations is reduced, the number of steps for assembling the distribution board can be reduced by the reduced number, and the chance of occurrence of poor connection can be reduced, so that the effect of increasing reliability can be obtained.
[Brief description of the drawings]
FIGS. 1A and 1B are main views of a distribution board according to an embodiment of the present invention, wherein FIG. 1A is a front view thereof and FIG.
2 (a) is a front view, FIG. 2 (b) is a side view, and FIG. 2 (c) is a bottom view of the bus bar conductor of the voltage phase used in the present invention.
3A and 3B show a neutral phase bus bar conductor used in the present invention, wherein FIG. 3A is a front view, FIG. 3B is a side view, and FIG. 3C is a bottom view.
4 (a) is a front view, FIG. 4 (b) is a side view thereof, and FIG. 4 (c) is a plan view thereof.
5A and 5B show a main part of a conventional distribution board, wherein FIG. 5A is a front view thereof, and FIG. 5B is a bottom view thereof.
[Explanation of symbols]
1 (R) Voltage phase bus bar conductor 2 (N) Neutral phase bus bar conductor 3 (T) Voltage phase bus bar conductor 1b, 2b, 3b Branch connection piece 4 Branch breaker Z Insulation coating

Claims (3)

電源の各相に接続された母線バー導体を複数本互いに並行に配置し、これらの母線バー導体の少なくとも一方の側に、複数個の分岐ブレーカを母線バー導体と並行に配列し、各分岐ブレーカをそれぞれ母線導体に電気的に接続し、これらの分岐ブレーカからそれぞれ負荷回路に給電するようにした分電盤において、前記各母線バー導体の側辺に、これから外側に張り出して一体的に形成された分岐接続片を所定の間隔を置いて所定数設け、これらの分岐導体片の先端に前記分岐ブレーカの接続端子を直接接続してなることを特徴とする分電盤。A plurality of bus bar conductors connected to each phase of the power supply are arranged in parallel with each other, and on at least one side of these bus bar conductors, a plurality of branch breakers are arranged in parallel with the bus bar conductors. Are electrically connected to the bus conductors, respectively, and are supplied integrally to the load circuits from the branch breakers. A distribution panel, comprising a predetermined number of branch connection pieces provided at predetermined intervals and a connection terminal of the branch breaker directly connected to a tip of each of the branch conductor pieces. 請求項1記載の分電盤において、単相3線式に構成された母線バー導体の中央の中性相の母線バー導体には、その両側辺にこれから外側へ張り出して一体的に分岐接続片を形成し、両側の電圧相の母線バー導体には、それぞれの外側に向いた方の側片にこれから外側に張り出して一体的に分岐接続片を形成することを特徴とする分電盤。2. The distribution board according to claim 1, wherein the bus bar conductor of the central neutral phase of the bus bar conductor formed in a single-phase three-wire system is formed to protrude outward from both side edges thereof and integrally form a branch connection piece. A power distribution panel characterized in that the bus bar conductors of the voltage phases on both sides are formed so as to protrude outwardly from the respective side pieces facing outward and form branch connection pieces integrally therewith. 請求項1または2記載の分電盤において、前記母線バー導体は、電源端子および分岐ブレーカの接続端子に接続される部分を除いて絶縁被覆が施されていることを特徴とする分電盤。3. The distribution board according to claim 1, wherein the bus bar conductor is provided with an insulating coating except for a portion connected to a power supply terminal and a connection terminal of a branch breaker. 4.
JP2002243142A 2002-08-23 2002-08-23 Distribution board Pending JP2004088831A (en)

Priority Applications (1)

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JP2002243142A JP2004088831A (en) 2002-08-23 2002-08-23 Distribution board

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JP2002243142A JP2004088831A (en) 2002-08-23 2002-08-23 Distribution board

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JP2004088831A true JP2004088831A (en) 2004-03-18

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JP2002243142A Pending JP2004088831A (en) 2002-08-23 2002-08-23 Distribution board

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