JP2003070109A - Switchgear - Google Patents
SwitchgearInfo
- Publication number
- JP2003070109A JP2003070109A JP2001254270A JP2001254270A JP2003070109A JP 2003070109 A JP2003070109 A JP 2003070109A JP 2001254270 A JP2001254270 A JP 2001254270A JP 2001254270 A JP2001254270 A JP 2001254270A JP 2003070109 A JP2003070109 A JP 2003070109A
- Authority
- JP
- Japan
- Prior art keywords
- future
- wiring
- circuit breaker
- busbar
- switchgear
- 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
Links
Landscapes
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、低圧金属閉鎖形等
のスイッチギヤに関し、詳しくは短い停電時間で配線用
遮断器の増設、或いはスイッチギヤの増設が効率よく行
えるスイッチギヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear such as a low-pressure metal closed type switchgear, and more particularly to a switchgear capable of efficiently adding a circuit breaker for wiring or a switchgear in a short power failure time.
【０００２】[0002]
【従来の技術】従来、病院等の電気設備としての低圧金
属閉鎖形スイッチギヤは、例えば図７に示す列盤に構成
されて電気室等に設置される。2. Description of the Related Art Conventionally, a low-voltage metal closed switchgear as an electric facility for a hospital or the like is constructed in a row board shown in FIG. 7 and installed in an electric room or the like.
【０００３】図７Ａは、列盤の１例の正面図であり、左
から順の各スイッチギヤは、引込盤１，受電盤２，コン
デンサ盤３，第１の変圧器盤４，第１，第２の低圧盤
（ブレーカー盤）５，６，第２の変圧器盤７，第３の低
圧盤８，…である。FIG. 7A is a front view of an example of a row board, and the switch gears in order from the left include a drawing board 1, a power receiving board 2, a capacitor board 3, a first transformer board 4, a first board 1, and a second board 1. The second low-voltage board (breaker board) 5, 6, the second transformer board 7, the third low-voltage board 8, ...
【０００４】同図Ｂは、それらの単線結線図であり、引
込盤１の床から引込まれた高圧ケーブルの例えば６．６
ＫＶの高圧系統電力は、引込盤１のケーブルヘッド１
ａ，電力需給用計器用変圧変流器（ＭＯＦ）１ｂ，断路
器１ｃ及び盤間（ユニット間）の母線Ｍ１を介して受電
盤２に送られる。FIG. 1B is a single wire connection diagram thereof, for example, 6.6 of a high voltage cable drawn from the floor of the drawing board 1.
The KV high-voltage system power is supplied to the cable head 1 of the service panel 1.
a, it is sent to the incoming panel 2 via a bus M 1 of instrument transformer current transformer for power supply and demand (MOF) 1b, (between units) disconnector 1c and Bankan.
【０００５】そして、受電盤２の高圧系統電力は、その
遮断器２ａ，計器用変流器２ｂ及びコンデンサ盤３を通
り、変圧器盤４，７の高圧カットアウト４ａ，７ａを介
してそれぞれの変圧器４ｂ，７ｂの１次側に供給され、
これらの変圧器４ｂ，７ｂにより、例えば２１０Ｖ，４
４０Ｖの低圧電力に降圧される。Then, the high voltage system power of the power receiving panel 2 passes through the circuit breaker 2a, the current transformer 2b for the instrument and the capacitor panel 3, and through the high voltage cutouts 4a and 7a of the transformer panels 4 and 7, respectively. Supplied to the primary side of the transformers 4b, 7b,
With these transformers 4b, 7b, for example, 210V, 4
It is stepped down to low voltage power of 40V.
【０００６】なお、Ｍ２は受電盤２からコンデンサ盤
３，変圧器盤４，低圧盤５，６を介して変圧器盤７に延
設された盤間の母線である。[0006] M 2 is a busbar between the panels extending from the power receiving panel 2 to the transformer panel 7 via the capacitor panel 3, the transformer panel 4, the low voltage panels 5 and 6.
【０００７】また、受電盤２において、２ｃ，２ｄは母
線Ｍ１と接地点との間に直列に設けられた接地開閉器，
避電器、２ｅは母線Ｍ１に接続されたヒューズであり、
このヒューズ２ｅを介して計器用変圧器２ｆが母線Ｍ1
に接続される。Further, in the power receiving panel 2, 2c and 2d are earthing switches provided in series between the bus bar M 1 and the earthing point,
The arrester, 2e is a fuse connected to the bus bar M 1 ,
The instrument transformer 2f is connected to the bus bar M 1 via the fuse 2e.
Connected to.
【０００８】さらに、コンデンサ盤３においては、母線
Ｍ2 に高圧カットアウト３ａ，遮断器３ｂ，直列リアク
トル３ｃを介して進相コンデンサ３ｄが接続される。Further, in the capacitor board 3, a phase advance capacitor 3d is connected to the bus bar M 2 via a high voltage cutout 3a, a circuit breaker 3b, and a series reactor 3c.
【０００９】つぎに、変圧器盤４の変圧器４ｂの２次側
に、計器用変流器４ｃ，盤間の母線Ｍ3 を介して低圧盤
５の上下方向（縦方向）の銅バスバー５ａが接続され、
このバスバー５ａに盤間の母線Ｍ4 を介して低圧盤６の
上下方向の銅バスバー６ａが接続される。[0009] Next, copper bus bar 5a of the secondary side of the transformer 4b of the transformer disc 4, the current transformer 4c, via a bus M 3 between the panel vertical low-pressure board 5 (vertical direction) Is connected,
A vertical copper bus bar 6a of the low-voltage board 6 is connected to the bus bar 5a via a bus bar M 4 between the boards.
【００１０】そして、銅バスバー５ａ，６ａそれぞれに
複数の配線用遮断器（ＭＣＣＢ）５ｂ，６ｂが接続さ
れ、これらの遮断器５ｂ，６ｂを介して照明設備，レン
トゲン等の治療設備等の各負荷に低圧電力が給電され
る。A plurality of circuit breakers (MCCB) 5b, 6b are connected to the copper bus bars 5a, 6a, respectively, and loads such as lighting equipment and treatment equipment such as X-rays are connected through the circuit breakers 5b, 6b. Is supplied with low voltage power.
【００１１】同様に、変圧器盤７の変圧器７ｂの２次側
に、計器用変流器７ｃ，盤間の母線Ｍ５を介して低圧盤
８の上下方向の銅バスバー８ａが接続され、このバスバ
ー８ａに接続された各配線用遮断器８ｂから他の負荷に
も低圧電力が給電される。[0011] Similarly, the secondary side of the transformer 7b of the transformer board 7, the current transformer 7c, the vertical direction of the copper bus bars 8a of the low-pressure plate 8 via the bus M 5 between the board are connected, Low-voltage power is also supplied to other loads from the wiring breaker 8b connected to the bus bar 8a.
【００１２】[0012]
【発明が解決しようとする課題】前記従来のこの種の低
圧金属閉鎖形スイッチギヤの場合、負荷の追加，変更に
伴う配線用遮断器の増設が必要になると、低圧盤５，
６，８の空きスペースへの配線用遮断器の増設、更に
は、あらたな低圧盤、即ちスイッチギヤの増設が必要に
なる。In the case of the conventional low-voltage metal-closed switchgear of this type, if a circuit breaker for wiring needs to be added due to addition or change of load, the low-voltage panel 5,
It is necessary to add a circuit breaker for wiring to the vacant spaces 6 and 8 and a new low-voltage board, that is, a switchgear.
【００１３】ところで、これらの増設作業を行うために
計画停電をする場合、当然のことながら、その停電時間
は極力短くしなければならないという社会的なニーズが
あり、そのために短時間の停電で効率よく作業を行わな
ければならないという問題がある。By the way, when a planned power outage is carried out to carry out these additional works, of course, there is a social need that the power outage time must be shortened as much as possible. There is a problem that you have to work well.
【００１４】本発明は、前記の点に留意し、短時間の停
電での配線用遮断器の増設、更にはスイッチギヤの増設
作業が効率よく行えるように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 thereof is to make it possible to efficiently add a wiring breaker and a switch gear when a power failure occurs for a short time.
【００１５】[0015]
【課題を解決するための手段】前記目的を達成するため
に、本発明の請求項１記載のスイッチギヤは、箱体内の
母線導体から分岐された複数個の母線導板に、それぞれ
配線用遮断器を接続したスイッチギヤにおいて、前記箱
体内の空きスペースを将来増設配線用遮断器が取付けら
れる将来実装スペースとし、前記将来実装スペースの側
方の前記母線導体に、予め複数個の増設用母線導板を取
付けておき、前記増設用母線導板の接続部裏面、または
該接続部裏面に重ねられる前記将来増設配線用遮断器の
端子導板の接続部裏面にナットを固着したものである。In order to achieve the above object, a switchgear according to claim 1 of the present invention is provided with a plurality of bus bar conductor plates branched from a bus bar conductor in a box body, and each has a wiring breaker. In the switchgear to which the relays are connected, the empty space in the box body is set as a future mounting space in which a circuit breaker for future wiring is installed, and a plurality of additional busbar conductors are previously installed on the busbar conductors on the sides of the future mounting space. A plate is attached, and a nut is fixed to the rear surface of the connection portion of the additional busbar conductor plate or the rear surface of the connection portion of the terminal conductor plate of the circuit breaker for future extension wiring to be overlaid on the rear surface of the connection portion.
【００１６】前記のように構成された本発明の請求項１
記載のスイッチギヤは、複数個の配線用遮断器が接続さ
れた箱体内の空きスペースが、将来増設配線用遮断器が
取付けられる将来実装スペースとされ、そのスペースの
側方の母線導体に、予め複数個の増設用母線導板が取付
けられ、その導板の接続部裏面、またはその接続部裏面
に重ねられる将来増設配線用遮断器の端子導板の接続部
裏面にナットが固着されているため、将来増設配線用遮
断器の取付けに際し、増設用母線導板の接続部前面また
は裏面に、端子導板の接続部を当てがい、端子導板また
は母線導板の透孔に前方からボルトを挿入し、母線導板
または端子導板の裏面のナットにボルトを螺合すること
により、端子導板を母線導板に接続することができる。Claim 1 of the present invention configured as described above
In the switchgear described above, the empty space inside the box to which a plurality of circuit breakers are connected is the future mounting space where the additional circuit breaker will be installed in the future. A plurality of additional busbar conductors are attached, and nuts are fixed to the backside of the connection part of the conductors or to the backside of the connection part of the terminal conductor of the future expansion circuit breaker that is to be overlaid on the backside of the connection part. When installing a circuit breaker for additional wiring in the future, put the connection part of the terminal conductor plate on the front or back of the connection part of the additional busbar conductor plate and insert the bolt from the front into the through hole of the terminal conductor plate or busbar conductor plate. Then, the terminal conducting plate can be connected to the busbar conducting plate by screwing the bolts into the nuts on the back surface of the busbar conducting plate or the terminal conducting plate.
【００１７】この場合、母線導板または端子導板の裏面
にナットが固着されているため、前方からのボルトの挿
入，締付け作業であり、ナットを把持する必要がなく、
短時間で効率よく作業を行うことができる。In this case, since the nut is fixedly attached to the back surface of the busbar conductor plate or the terminal conductor plate, the bolts must be inserted and tightened from the front, and it is not necessary to grip the nut.
Work can be done efficiently in a short time.
【００１８】つぎに、請求項２記載のスイッチギヤは、
箱体内の上下方向の母線導体から複数個の母線導板が分
岐され、前記箱体内の中央部に上下方向の支持台が固着
され、前記支持台にそれぞれ取付台を介して複数個の配
線用遮断器が、各前面が同一面に位置するよう取付けら
れ、前記母線導板に接続されたスイッチギヤにおいて、
前記箱体内の空きスペースを将来増設配線用遮断器が取
付けられる将来実装スペースとし、前記将来実装スペー
スの側方の前記母線導体に、予め増設用母線導板を取付
け、かつ、前記将来実装スペースの前記支持台に、予め
増設用取付台を取付け、前記増設用取付台に将来取付け
られる将来増設配線用遮断器の前面が、既設の前記各配
線用遮断器の前面と同一面になるよう、前記増設用取付
台に、将来増設配線用遮断器の背面に装着した前後方向
長さ調整板の裏面に突出した係止片が挿入して係止する
係止口を形成したものである。Next, the switchgear according to claim 2 is
A plurality of bus bar conductive plates are branched from the vertical bus bar conductors in the box body, and a vertical support base is fixed to the central portion of the box body, and a plurality of wirings are attached to the support bases via mounting bases. In the switchgear, in which the circuit breakers are mounted so that their front surfaces are located on the same plane, and which is connected to the busbar conductor plate,
An empty space in the box is set as a future mounting space in which a circuit breaker for additional wiring is installed in the future, and an additional busbar conductor plate is previously attached to the busbar conductor on the side of the future mounting space, and The mounting base for extension is attached to the support base in advance, and the front surface of the future circuit breaker for future wiring to be mounted on the mounting base for future expansion is flush with the front surface of each of the existing circuit breakers for wiring. The extension mounting base is formed with a locking port into which a locking piece protruding from the rear surface of the longitudinal length adjusting plate mounted on the back surface of the circuit breaker for future wiring is inserted and locked.
【００１９】前記のように構成された請求項２記載のス
イッチギヤは、複数個の配線用遮断器が、各前面が同一
面に位置するよう取付けられ、箱体内の空きスペースが
将来増設配線用遮断器が取付けられる将来実装スペース
とされ、その将来実装スペースの側方の母線導体に、予
め増設用母線導板が取付けられ、かつ、将来実装スペー
スの支持台に、予め増設用取付台が取付けられ、増設用
取付台に将来取付けられる将来増設配線用遮断器の前面
が、既設の各配線用遮断器の前面と同一面になるよう、
増設用取付台に、将来増設配線用遮断器の背面に装着し
た前後方向長さ調整板の裏面に突出した係止片が挿入し
て係止する係止口が形成されているため、将来増設配線
用遮断器の取付けに際し、その将来増設配線用遮断器が
小型で、そのままではその前面が既設の各配線用遮断器
の前面と同一面にならなく、奥にへこんだ状態になる場
合、その将来増設配線用遮断器の背面に、前記同一面に
なるよう合成樹脂等絶縁物からなる前後方向長さ調整板
を装着し、その調整板の裏面の係止片を、増設用取付台
の係止口に挿入して係止することができ、母線導板に近
い調整板の一側を、ドライバを使うことなく簡単に係止
し、調整板の他側を増設用取付台にねじ止めすればよ
く、ねじ止め作業が片側のみでよく、短時間に効率よく
作業を行うことができる。In the switchgear according to the second aspect of the present invention configured as described above, a plurality of circuit breakers for wiring are mounted so that their front surfaces are located on the same plane, and the empty space in the box body is for future expansion wiring. The circuit breaker will be installed in the future mounting space, the busbar conductors on the sides of the future mounting space will be preinstalled with additional busbar conductors, and the future mounting space will be preinstalled with the additional mounting base. So that the front of the future circuit breakers for future wiring that will be installed in the future on the additional mounting base will be flush with the front of each existing circuit breaker for wiring.
In the future, it will be added in the future because the mounting bracket for expansion is formed with a locking hole into which the locking piece protruding from the back of the front-rear length adjustment plate mounted on the back of the circuit breaker for wiring in the future is inserted and locked. When installing a circuit breaker for wiring, if the circuit breaker for additional wiring is small in the future and if its front surface is not flush with the front surface of each existing wiring circuit breaker, but is recessed in the back, In the future, install a longitudinal length adjustment plate made of an insulating material such as synthetic resin on the back of the breaker for additional wiring so that it is on the same surface, and attach the locking piece on the back of the adjustment plate to the extension mounting bracket. It can be inserted into the stop and locked, one side of the adjustment plate near the bus bar conductive plate can be easily locked without using a screwdriver, and the other side of the adjustment plate can be screwed to the extension mounting base. The screwing work can be done on only one side, and the work can be done efficiently in a short time. That.
【００２０】つぎに、請求項３記載の発明は、箱体内の
母線導体から分岐された複数個の母線導板に、それぞれ
配線用遮断器を接続したスイッチギヤにおいて、前記箱
体内の空きスペースを、将来増設される増設スイッチギ
ヤへの増設ケーブルが接続される将来増設スペースと
し、前記将来増設スペースの側方の前記母線導体に、予
め前記増設ケーブルが接続される増設端子を取付けてお
き、前記増設端子の接続部裏面、または前記接続部裏面
に重ねられる前記増設ケーブルの接続端子の接続部裏面
にナットを固着したものである。In a third aspect of the present invention, in a switchgear in which a wiring breaker is connected to each of a plurality of busbar conductor plates branched from a busbar conductor in the box body, an empty space in the box body is provided. , A future expansion space to which an expansion cable is connected to an expansion switchgear to be expanded in the future, and an extension terminal to which the expansion cable is connected is attached in advance to the busbar conductor on the side of the future expansion space, A nut is fixed to the back surface of the connection portion of the extension terminal or the back surface of the connection portion of the connection terminal of the extension cable that is overlaid on the back surface of the connection portion.
【００２１】前記のように構成された請求項４記載の発
明は、箱体内の母線導体から分岐された複数個の母線導
板に、それぞれ配線用遮断器を接続したスイッチギヤに
おいて、箱体内の空きスペースが、将来増設される増設
スイッチギヤへの増設ケーブルが接続される将来増設ス
ペースとされ、その将来増設スペースの側方の前記母線
導体に、予め増設ケーブルが接続される増設端子が取付
けられ、その増設端子の接続部裏面、またはその接続部
裏面に重ねられる増設ケーブルの接続端子の接続部裏面
にナットが固着されているため、箱体内の空きスペース
が少なく、配線用遮断器の増設スイッチギヤを、列盤の
端或いは別の場合に設置する場合に、増設ケーブルの接
続部を増設端子に重ね、ボルトを挿入してナットに螺合
すればよく、ナットを把持せず前方からのボルトの挿
入，締付け作業となり、短時間で効率よく作業を行うこ
とができる。According to a fourth aspect of the present invention, the switchgear in which the circuit breakers for wiring are respectively connected to a plurality of busbar conductor plates branched from the busbar conductors in the box body is provided. The vacant space is defined as the future expansion space to which the expansion cable for the expansion switchgear to be expanded in the future is connected, and the expansion terminal to which the expansion cable is connected is attached in advance to the bus conductor on the side of the expansion space. Since the nut is fixed to the back side of the connection part of the extension terminal or the back side of the connection part of the connection terminal of the extension cable that is stacked on the back side of the connection part, there is little empty space in the box and the extension switch for the circuit breaker for wiring. When installing the gear at the end of the row board or at another case, overlap the connection part of the extension cable with the extension terminal, insert the bolt and screw it into the nut. Insertion of the bolt from the front without gripping, clamping it and work, it is possible to perform work efficiently in a short time.
【００２２】[0022]
【発明の実施の形態】本発明の実施の１形態を図１ない
し図６を参照して説明する。各図において、同一符号は
同一もしくは相当するものを示す。まず、図１におい
て、９は図７の第１の低圧盤５に相当する低圧金属閉鎖
形スイッチギヤの縦長の箱体、１０は箱体９内の左側部
に配設された上下方向の母線導体であり、図７の銅バス
バー５ａに相当し、３相の母線導体１０ａ、１０ｂ、１
０ｃ（図２Ａ参照）が前後の位置に並設されている。１
１は母線導体１０から分岐された複数個（図１では６
個）の母線導板であり、それぞれ各母線導体１０ａ、１
０ｂ、１０ｃの上・中・下の位置から右方へ母線導板１
１ａ、１１ｂ、１１ｃが分岐されている。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. In each figure, the same reference numerals indicate the same or corresponding ones. First, in FIG. 1, 9 is a vertically long box body of a low-voltage metal closed switchgear corresponding to the first low-voltage board 5 in FIG. 7, and 10 is a vertical bus bar disposed on the left side of the box body 9. A conductor, which corresponds to the copper bus bar 5a in FIG. 7, and is a three-phase bus conductor 10a, 10b, 1
0c (see FIG. 2A) are juxtaposed in front and rear positions. 1
1 is a plurality of branches from the bus conductor 10 (6 in FIG. 1).
Individual busbar conductors, and each of the busbar conductors 10a, 1a
Busbar conductors 1 from the upper, middle, and lower positions of 0b and 10c to the right
1a, 11b, and 11c are branched.
【００２３】１２は箱体９内の後側中央部に固着された
切断平面Ｕ字形の上下方向の支持台、１３は支持台１２
に取付けられた複数個（図１では６個）の取付台、１４
は各取付台１３に取付けられた配線用遮断器であり、各
配線用遮断器１４の前面が同一面になるよう、各配線用
遮断器１４の前後方向の長さに応じて各取付台１３が支
持台１２に前後方向に位置調整自在に取付けられ、配線
用遮断器１４の３相の各端子が対応する母線導板１１
ａ、１１ｂ、１１ｃに接続されている。１５は各母線導
板１１ａ、１１ｂ、１１ｃに取付けられた相色別ワッペ
ンである。Reference numeral 12 is a vertical support of a U-shaped cutting plane fixed to the rear central portion of the box 9, and 13 is a support 12.
A plurality of (6 in FIG. 1) mounting bases mounted on the
Is a circuit breaker attached to each mounting base 13, and each mounting base 13 is arranged according to the length of each wiring circuit breaker 14 in the front-rear direction so that the front surfaces of the wiring circuit breakers 14 are flush with each other. Is attached to the support base 12 so that the position thereof can be adjusted in the front-rear direction, and the three-phase terminals of the circuit breaker for wiring 14 correspond to the busbar conductor plates 11.
It is connected to a, 11b, and 11c. Reference numeral 15 is a patch for each color attached to each busbar conductor plate 11a, 11b, 11c.
【００２４】１６は箱体９内の下部の空きスペース、１
７は空きスペース１６の上部の将来実装スペースであ
り、将来増設配線用遮断器が取付けられる。１８は将来
実装スペース１７の支持台１２に予め取付けられた複数
個（図１では２個）の増設用取付台、１９ａ、１９ｂ、
１９ｃは各増設用取付台１８に対応する側方の３相の母
線導体１０に、予め取付けられた各相の増設用母線導板
であり、各増設用母線導板１９の接続部に透孔２０が形
成されている。また、この透孔２０の裏面、即ち接続部
裏面にナットが固着されている場合もある。16 is an empty space in the lower part of the box body 1,
Reference numeral 7 denotes a future mounting space above the empty space 16, to which a circuit breaker for additional wiring will be attached in the future. Reference numeral 18 denotes a plurality of (two in FIG. 1) additional mounting bases that are previously mounted on the support base 12 of the future mounting space 17, 19a, 19b,
Reference numeral 19c designates an extension busbar conductor plate of each phase, which is preliminarily attached to the side three-phase busbar conductors 10 corresponding to each extension mount 18, and has a through hole at the connection portion of each extension busbar conductor plate 19. 20 are formed. Further, a nut may be fixed to the back surface of the through hole 20, that is, the back surface of the connecting portion.
【００２５】２１は空きスペース１６の下部の将来増設
スペースであり、２２ａ、２２ｂ、２２ｃは将来増設ス
ペース２１の側方の３相母線導体１０ａ、１０ｂ、１０
ｃ（図６参照）に予め取付けられた増設端子であり、こ
の各増設端子２２ａ、２２ｂ、２２ｃに将来増設される
増設スイッチギヤへの増設ケーブル３５が接続される。Reference numeral 21 is a future expansion space below the empty space 16, and 22a, 22b, 22c are three-phase bus conductors 10a, 10b, 10 on the sides of the future expansion space 21.
c (see FIG. 6), which is an extension terminal attached in advance, and an extension cable 35 to an extension switch gear to be added in the future is connected to each extension terminal 22a, 22b, 22c.
【００２６】そして、スイッチギヤの設置後、負荷の追
加，変更に伴う配線用遮断器の増設が必要になった場合
を、図２及び図３を参照して説明する。Then, a case where a wiring breaker needs to be added due to addition or change of load after the installation of the switchgear will be described with reference to FIGS. 2 and 3.
【００２７】２３は将来増設配線用遮断器であり、支持
台１２に予め取付けられた増設用取付台１８の前面に直
接当てがわれ、前面側からドライバにより増設用取付台
１８に取付けられる。２４は増設配線用遮断器２３の左
側に導出された端子導板、２５は端子導板２４の接続部
に透設された透孔、２６は透孔２５に後方からプレスに
より圧入して固着されたナットであり、増設用母線導板
１９の接続部裏面に端子導板２４が重ねられる。２７は
ボルトであり、レンチ等によりボルト２７が増設用母線
導板１９の透孔２０、端子導板２４の透孔２５に挿通
し、ナット２６に螺合し、ナット２６を手で把持するこ
となく、端子導板２４が増設用母線導板１９に接続さ
れ、増設配線用遮断器２３の前面が既設の各配線用遮断
器１４の前面と同一面に位置している。Reference numeral 23 denotes a circuit breaker for additional wiring in the future, which is directly applied to the front surface of the additional mounting board 18 previously mounted on the support 12, and is mounted on the additional mounting board 18 by a driver from the front side. Reference numeral 24 is a terminal conducting plate led out to the left side of the additional wiring breaker 23, 25 is a through hole that is transparently provided in the connection portion of the terminal conducting plate 24, and 26 is press-fitted into the through hole 25 from the rear by a press and fixed. It is a nut, and the terminal conductor plate 24 is superposed on the rear surface of the connecting portion of the additional busbar conductor plate 19. Reference numeral 27 is a bolt, and the bolt 27 is inserted into the through hole 20 of the additional busbar conductor plate 19 and the through hole 25 of the terminal conductor plate 24 with a wrench or the like, screwed into the nut 26, and the nut 26 is gripped by hand. Instead, the terminal conductor plate 24 is connected to the additional busbar conductor plate 19, and the front surface of the additional wiring circuit breaker 23 is located on the same plane as the front surface of each existing wiring circuit breaker 14.
【００２８】２８は箱体９内の両側に設けられた固定防
護板、２９は固定防護板２８に前方に開閉自在に支持さ
れた開閉防護板であり、配線用遮断器１４、２３の操作
・表示部を残して配線用遮断器１４、２３の前面を覆っ
ている。３０は開閉防護板２９の裏面に固着された絶縁
性の防護板、３１は増設配線用遮断器２３の右側を覆っ
たカバーである。28 is a fixed protective plate provided on both sides of the box body 9, and 29 is an open / close protective plate supported by the fixed protective plate 28 so as to be openable and closable forward, for operating the circuit breakers 14 and 23 for wiring. The display units are left to cover the front surfaces of the circuit breakers 14 and 23. Reference numeral 30 denotes an insulating protection plate fixed to the back surface of the opening / closing protection plate 29, and 31 denotes a cover that covers the right side of the additional wiring breaker 23.
【００２９】つぎに、図４に示すように、将来増設配線
用遮断器２３’が小型で前後方向の長さが短く、直接増
設用取付台１８に取付けると、その増設配線用遮断器２
３’の前面が既設の配線用遮断器１４の前面と同一面に
位置しない場合、その増設配線用遮断器２３’の裏面に
前後方向長さ調整板３２を取付け、調整板３２を介して
増設配線用遮断器２３’を増設用取付台１８に取付け
る。Next, as shown in FIG. 4, if the future extension circuit breaker 23 'is small and has a short length in the front-rear direction and is directly attached to the extension mounting base 18, the extension wiring circuit breaker 2 will be installed.
When the front surface of 3'is not on the same plane as the front surface of the existing wiring breaker 14, the front-back length adjusting plate 32 is attached to the back surface of the additional wiring breaker 23 ', and the extension is made via the adjusting plate 32. The circuit breaker 23 ′ for wiring is attached to the attachment mount 18.
【００３０】そして、図４に示す場合は、増設用母線導
板１９の接続部裏面にナット２６を固着し、増設配線用
遮断器２３の端子導板２４は透孔２５のみとし、増設用
母線導板１９の前面に端子導板２４を重ね、ボルト２７
により接続している。この場合、増設用母線導板１９の
前面に端子導板２４を重ねているため、重ね作業が容易
である。なお、図２に示すように、端子導板２４の裏面
にナット２６を固着し、増設用母線導板１９の裏面に端
子導板２４を重ねるようにしてもよいのは勿論である。In the case shown in FIG. 4, the nut 26 is fixed to the rear surface of the connecting portion of the additional busbar conductor plate 19, and the terminal conductor plate 24 of the additional circuit breaker 23 has only the through hole 25. The terminal conductor plate 24 is placed on the front surface of the conductor plate 19, and the bolt 27
Connected by. In this case, since the terminal conductive plate 24 is stacked on the front surface of the additional busbar conductive plate 19, the stacking work is easy. Of course, as shown in FIG. 2, the nut 26 may be fixed to the back surface of the terminal conducting plate 24 and the terminal conducting plate 24 may be overlapped on the back surface of the additional busbar conducting plate 19.
【００３１】この場合、図５に示すように、増設用取付
台１８の左側部に横長の係止口３３を形成し、調整板３
２の裏面左側部にかぎ形の係止片３４を突設し、増設配
線用遮断器２３の取付時、係止片３４を係止口３３に挿
入して左方へずらすことにより、左側部をドライバを使
うことなく係止することができる。In this case, as shown in FIG. 5, a horizontally long locking port 33 is formed on the left side of the extension mounting base 18, and the adjusting plate 3 is provided.
When a hook-shaped locking piece 34 is provided on the left side of the rear surface of No. 2 and the breaker 23 for additional wiring is attached, the locking piece 34 is inserted into the locking opening 33 and is slid to the left side. Can be locked without using a screwdriver.
【００３２】なお、図１における既設の配線用遮断器１
４は、その前後方向の長さが短い場合、配線用遮断器１
４を直接取付台１３に取付け、その取付台１３の支持台
１２への取付位置を前方へずらし、各配線用遮断器１４
の前面が同一面になるようにしている。The existing circuit breaker 1 for wiring shown in FIG.
4 is a wiring breaker 1 when the length in the front-back direction is short.
4 is directly attached to the mounting base 13, and the mounting position of the mounting base 13 to the support base 12 is shifted to the front side, and each wiring breaker 14
The front surface of is made to be the same surface.
【００３３】つぎに、図１の将来実装スペース１７が埋
まり、スイッチギヤを増設する場合、母線導体１０に予
め取付けられた増設端子２２に、増設スイッチギヤへの
増設ケーブル３５を接続する。Next, when the mounting space 17 in the future in FIG. 1 is filled up and the switch gear is expanded, the expansion cable 35 to the expansion switch gear is connected to the expansion terminal 22 previously attached to the bus bar conductor 10.
【００３４】この場合、図６に示すように、３相の各母
線導体１０ａ、１０ｂ、１０ｃにそれぞれ増設端子２２
ａ、２２ｂ、２２ｃが取付けられ、それぞれの先端接続
部が順次右方へ位置するようにずれ、接続部の透孔の裏
側にナット２６がプレスにより圧入して固着されてお
り、増設ケーブル３５の接続端子３６が接続部の前面に
重ねられ、ボルト２７が接続端子３６の透孔、増設端子
２２の透孔に挿入し、ナット２６に螺合し、増設ケーブ
ル３５が増設端子２２を介して母線導体１０に接続され
る。そして、前面側からの作業のみのため、短時間で効
率よく作業を行うことができる。In this case, as shown in FIG. 6, the extension terminals 22 are respectively attached to the three-phase bus conductors 10a, 10b, 10c.
a, 22b, 22c are attached, and the respective tip connection portions are sequentially shifted to the right, and the nut 26 is press-fitted and fixed to the back side of the through hole of the connection portion by pressing. The connection terminal 36 is overlaid on the front surface of the connection portion, the bolt 27 is inserted into the through hole of the connection terminal 36 and the through hole of the extension terminal 22, screwed into the nut 26, and the extension cable 35 is inserted through the extension terminal 22 and the bus bar. It is connected to the conductor 10. Since the work is performed only from the front side, the work can be efficiently performed in a short time.
【００３５】なお、増設端子２２の接続部は透孔のみと
し、接続端子３６の接続部裏面にナット２６を固着し、
増設端子２２の裏面に接続端子３６を重ねるようにして
もよい。The connecting portion of the additional terminal 22 is only a through hole, and the nut 26 is fixed to the rear surface of the connecting portion of the connecting terminal 36.
The connection terminal 36 may be stacked on the back surface of the extension terminal 22.
【００３６】[0036]
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。請
求項１記載の発明は、複数個の配線用遮断器１４が接続
された箱体９内の空きスペース１６が、将来増設配線用
遮断器３３が取付けられる将来実装スペース１７とさ
れ、そのスペース１７の側方の母線導体１０に、予め複
数個の増設用母線導板１９が取付けられ、その導板１９
の接続部裏面、またはその接続部裏面に重ねられる将来
増設配線用遮断器２３の端子導板２４の接続部裏面にナ
ット２６が固着されているため、将来増設配線用遮断器
２３の取付けに際し、増設用母線導板１９の接続部前面
または裏面に、端子導板２４の接続部を当てがい、端子
導板２４または増設用母線導板１９の透孔２０に前方か
らボルト２７を挿入し、増設用母線導板１９または端子
導板２４の裏面のナット２６にボルト２７を螺合するこ
とにより、端子導板２４を増設用母線導板１９に接続す
ることができ、ナット２６を把持する必要がなく、短時
間で効率よく配線用遮断器の増設作業を行うことができ
る。Since the present invention is constructed as described above, it has the following effects. According to the first aspect of the present invention, the empty space 16 in the box 9 to which the plurality of circuit breakers 14 are connected is the future mounting space 17 to which the future additional circuit breaker 33 is attached. A plurality of additional busbar conductor plates 19 are previously attached to the busbar conductors 10 on the sides of the
Since the nut 26 is fixedly attached to the rear surface of the connecting portion of the terminal or the rear surface of the connecting portion of the terminal conductor plate 24 of the circuit breaker 23 for future expansion wiring, which is overlapped on the back surface of the connection portion, when mounting the circuit breaker 23 for future expansion wiring, Apply the connecting portion of the terminal conductor plate 24 to the front surface or the rear surface of the connecting portion of the additional busbar conductor plate 19, insert the bolt 27 from the front into the through hole 20 of the terminal conductor plate 24 or the additional busbar conductor plate 19, and add The terminal guide plate 24 can be connected to the additional bus bar conductor plate 19 by screwing the bolt 27 into the nut 26 on the back surface of the bus bar conductor plate 19 or the terminal conductor plate 24, and it is necessary to grip the nut 26. Therefore, it is possible to efficiently add the breaker for wiring in a short time.
【００３７】つぎに、請求項２記載の発明は、複数個の
配線用遮断器１４が、各前面が同一面に位置するよう取
付けられ、箱体９内の空きスペース１６が将来増設配線
用遮断器２３が取付けられる将来実装スペース１７とさ
れ、その将来実装スペース１７の側方の母線導体１０
に、予め増設用母線導板１９が取付けられ、かつ、将来
実装スペース１７の支持台１２に、予め増設用取付台１
８が取付けられ、増設用取付台１８に将来取付けられる
将来増設配線用遮断器２３の前面が、既設の各配線用遮
断器１４の前面と同一面になるよう、増設用取付台１８
に、将来増設配線用遮断器２３の背面に装着した前後方
向長さ調整板３２の裏面に突出した係止片３４が挿入し
て係止する係止口３３が形成されているため、将来増設
配線用遮断器２３の取付けに際し、その将来増設配線用
遮断器２３が小型で、そのままではその前面が既設の各
配線用遮断器１４の前面と同一面にならなく、奥にへこ
んだ状態になる場合、その将来増設配線用遮断器２３の
背面に、前記同一面になるよう合成樹脂等絶縁物からな
る前後方向長さ調整板３２を装着し、その調整板３２の
裏面の係止片３４を、増設用取付台１８の係止口３３に
挿入して係止することができ、増設用母線導板１９に近
い調整板３２の一側を、ドライバを使うことなく簡単に
係止し、調整板３２の他側を増設用取付台１８にねじ止
めすればよく、ねじ止め作業が片側のみでよく、短時間
で効率よく作業を行うことができる。Next, according to the second aspect of the present invention, a plurality of circuit breakers 14 for wiring are attached so that their front surfaces are located on the same plane, and the empty space 16 in the box 9 is blocked for future expansion wiring. It is set as a future mounting space 17 in which the container 23 is mounted, and the busbar conductor 10 on the side of the future mounting space 17
, The extension busbar guide plate 19 is attached in advance, and the extension attachment base 1 is previously attached to the support base 12 of the future mounting space 17.
8 is installed, and the front surface of the future expansion circuit breaker 23, which will be installed in the future on the expansion mounting board 18, is flush with the front surface of each existing wiring circuit breaker 14,
In the future, since a locking piece 33 for inserting and locking the protruding locking piece 34 on the back surface of the front-rear direction length adjusting plate 32 mounted on the back surface of the circuit breaker 23 for future wiring is formed, When the wiring breaker 23 is installed, the extension wiring breaker 23 is small in the future, and the front surface of the wiring breaker 23 is not flush with the front surface of each existing wiring breaker 14 but is recessed in the back. In this case, the front-rear length adjusting plate 32 made of an insulating material such as synthetic resin is mounted on the rear surface of the circuit breaker 23 for additional wiring in the future so as to be on the same plane, and the locking piece 34 on the back surface of the adjusting plate 32 is attached. Can be locked by inserting it into the locking port 33 of the additional mounting base 18, and easily adjusts by locking one side of the adjusting plate 32 near the additional busbar conducting plate 19 without using a driver. You just need to screw the other side of the plate 32 to the additional mounting base 18, Well a stop operation only one side, it is possible to perform work efficiently in a short time.
【００３８】つぎに、請求項３記載の発明は、箱体９内
の母線導体１０から分岐された複数個の母線導板１０
に、それぞれ配線用遮断器１４を接続したスイッチギヤ
において、箱体９内の空きスペース１６が、将来増設さ
れる増設スイッチギヤへの増設ケーブル３５が接続され
る将来増設スペース２１とされ、その将来増設スペース
２１の側方の前記母線導体１０に、予め増設ケーブル３
５が接続される増設端子２２が取付けられ、その増設端
子２２の接続部裏面、またはその接続部裏面に重ねられ
る増設ケーブル３５の接続端子の接続部裏面にナット２
６が固着それているため、箱体９内の空きスペース１６
が少なく、配線用遮断器を増設する増設スイッチギヤ
を、列盤の端或いは別の場合に設置する場合に、増設ケ
ーブル３５の接続端子を増設端子２２に重ね、ボルト２
７を挿入してナット２６に螺合すればよく、ナット２６
を把持せず前方からのボルト２７の挿入，締付け作業と
なり、短時間で効率よく作業を行うことができる。Next, in the invention according to claim 3, a plurality of busbar conductor plates 10 branched from the busbar conductors 10 in the box body 9 are provided.
In the switch gears to which the circuit breakers 14 for wiring are respectively connected, the empty space 16 in the box body 9 is set as the future expansion space 21 to which the expansion cable 35 to the expansion switch gear to be expanded in the future is connected, and in the future. The extension cable 3 is previously attached to the bus conductor 10 on the side of the extension space 21.
The extension terminal 22 to which 5 is connected is attached, and the nut 2 is provided on the rear surface of the connection portion of the extension terminal 22 or on the rear surface of the connection portion of the connection terminal of the extension cable 35 that is overlaid on the rear surface of the connection portion.
Since 6 is stuck, the empty space 16 inside the box 9
When installing an additional switchgear for adding a circuit breaker for wiring at the end of the row board or at another case, the connection terminal of the additional cable 35 is overlaid on the additional terminal 22 and the bolt 2
7 can be inserted and screwed into the nut 26.
Since the bolt 27 is inserted and tightened from the front without gripping, the work can be performed efficiently in a short time.
【図１】本発明の実施の１形態の正面図である。FIG. 1 is a front view of an embodiment of the present invention.
【図２】Ａは図１の形態に将来増設配線用遮断器を取付
けた状態の切断平面図、ＢはＡの一部の正面図である。FIG. 2A is a cutaway plan view showing a state in which a future circuit breaker for additional wiring is attached to the configuration of FIG. 1, and FIG. 2B is a front view of a part of A.
【図３】図２Ａの一部の拡大切断平面図である。FIG. 3 is an enlarged cutaway plan view of a portion of FIG. 2A.
【図４】Ａは図１の形態に他の将来増設配線用遮断器を
取付けた状態の切断平面図、ＢはＡの一部の正面図であ
る。FIG. 4A is a cutaway plan view showing a state in which a circuit breaker for future extension wiring is attached to the configuration of FIG. 1, and B is a front view of a part of A.
【図５】Ａは図４Ａの調整板の平面図、Ｂは増設用取付
台の正面図である。5A is a plan view of the adjustment plate of FIG. 4A, and B is a front view of an extension mounting base.
【図６】図１の形態に増設ケーブルを取付けた状態の切
断平面図である。6 is a cutaway plan view showing a state in which an extension cable is attached to the form of FIG.
【図７】Ａは列盤の１例の正面図、ＢはＡの単線結線図
である。7A is a front view of an example of a row board, and B is a single-line connection diagram of A. FIG.
９ 箱体 １０ 母線導体 １１ 母線導板 １２ 支持台 １３ 取付台 １４ 配線用遮断器 １６ 空きスペース １７ 将来実装スペース １８ 増設用取付台 １９ 増設用母線導体 ２０ 透孔 ２１ 将来増設スペース ２２ 増設端子 ２３ 将来増設配線用遮断器 ２４ 端子導体 ２６ ナット ２７ ボルト ２９ 開閉防護板 ３０ 絶縁板 ３２ 調整板 ３３ 係止口 ３４ 係止片 ３５ 増設ケーブル 9 boxes 10 Bus conductor 11 Busbar Conductor 12 Support 13 mounting base 14 Wiring circuit breaker 16 free space 17 Future mounting space 18 Extension mounting base 19 Bus conductor for expansion 20 through holes 21 Future expansion space 22 additional terminals 23 Breaker for future expansion wiring 24 terminal conductor 26 nuts 27 volts 29 Open / close protection plate 30 insulating plate 32 Adjustment plate 33 Locking port 34 Locking piece 35 extension cable
───────────────────────────────────────────────────── フロントページの続き (72)発明者 台野 一郎 京都市右京区梅津高畝町47番地 日新電機 株式会社内 Ｆターム(参考） 5G016 AA07 CD08 CD34 DA05 DA23 DA25 DA35 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Ichiro Taino 47 Umezu Takaune Town, Ukyo-ku, Kyoto Nissin Electric Within the corporation F-term (reference) 5G016 AA07 CD08 CD34 DA05 DA23 DA25 DA35
Claims (3)
の母線導板に、それぞれ配線用遮断器を接続したスイッ
チギヤにおいて、 前記箱体内の空きスペースを将来増設配線用遮断器が取
付けられる将来実装スペースとし、 前記将来実装スペースの側方の前記母線導体に、予め複
数個の増設用母線導板を取付けておき、 前記増設用母線導板の接続部裏面、または該接続部裏面
に重ねられる前記将来増設配線用遮断器の端子導板の接
続部裏面にナットを固着したことを特徴とするスイッチ
ギヤ。1. A switchgear in which a circuit breaker for wiring is connected to each of a plurality of busbar conductor plates branched from a busbar conductor in the box body, and a circuit breaker for additional wiring is installed in an empty space in the box body in the future. As a future mounting space, a plurality of additional busbar conductors are attached in advance to the busbar conductors on the side of the future mounting space, and the rear surface of the connecting portion of the additional busbar conductors or the rear surface of the connecting portion are overlapped. A switchgear, characterized in that a nut is fixed to the rear surface of the connection portion of the terminal conductor plate of the circuit breaker for future expansion wiring.
の母線導板が分岐され、前記箱体内の中央部に上下方向
の支持台が固着され、前記支持台にそれぞれ取付台を介
して複数個の配線用遮断器が、各前面が同一面に位置す
るよう取付けられ、前記母線導板に接続されたスイッチ
ギヤにおいて、 前記箱体内の空きスペースを将来増設配線用遮断器が取
付けられる将来実装スペースとし、 前記将来実装スペースの側方の前記母線導体に、予め増
設用母線導板を取付け、 かつ、前記将来実装スペースの前記支持台に、予め増設
用取付台を取付け、 前記増設用取付台に将来取付けられる将来増設配線用遮
断器の前面が、既設の前記各配線用遮断器の前面と同一
面になるよう、前記増設用取付台に、将来増設配線用遮
断器の背面に装着した前後方向長さ調整板の裏面に突出
した係止片が挿入して係止する係止口を形成したことを
特徴とする請求項１記載のスイッチギヤ。2. A plurality of bus bar conductive plates are branched from a vertical bus bar conductor in the box body, a vertical support base is fixed to a central portion of the box body, and each of the support bases is attached with a mounting base. In the switchgear, in which a plurality of circuit breakers for wiring are mounted so that their front surfaces are located on the same plane, and in the switchgear connected to the busbar conductor plate, an empty space in the box body will be installed in the future. As a mounting space, an extension busbar conductive plate is previously attached to the busbar conductor on the side of the future mounting space, and an extension mounting base is previously attached to the support base of the future mounting space. Installed on the extension mounting base and on the rear of the future expansion wiring circuit breaker so that the front surface of the future expansion circuit breaker to be installed in the future will be flush with the front surface of each existing wiring circuit breaker. Longitudinal direction Switchgear according to claim 1, wherein the forming the engaging opening engaging piece protruding on the back surface of the adjusting plate is inserted and locked into the.
の母線導板に、それぞれ配線用遮断器を接続したスイッ
チギヤにおいて、 前記箱体内の空きスペースを、将来増設される増設スイ
ッチギヤへの増設ケーブルが接続される将来増設スペー
スとし、 前記将来増設スペースの側方の前記母線導体に、予め前
記増設ケーブルが接続される増設端子を取付けておき、 前記増設端子の接続部裏面、または前記接続部裏面に重
ねられる前記増設ケーブルの接続端子の接続部裏面にナ
ットを固着したことを特徴とするスイッチギヤ。3. A switchgear in which a wiring circuit breaker is connected to each of a plurality of busbar conductors branched from a busbar conductor in the box body, and an empty space in the boxbox is used as an extension switchgear to be added in the future. In the future expansion space to which the expansion cable is connected, an extension terminal to which the expansion cable is connected is attached in advance to the bus conductor on the side of the future expansion space, and the rear surface of the connection portion of the expansion terminal or the A switchgear characterized in that a nut is fixed to the rear surface of the connection portion of the connection terminal of the extension cable which is stacked on the rear surface of the connection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001254270A JP2003070109A (en) | 2001-08-24 | 2001-08-24 | Switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001254270A JP2003070109A (en) | 2001-08-24 | 2001-08-24 | Switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003070109A true JP2003070109A (en) | 2003-03-07 |
Family
ID=19082453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001254270A Pending JP2003070109A (en) | 2001-08-24 | 2001-08-24 | Switchgear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003070109A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6412407U (en) * | 1987-07-09 | 1989-01-23 | ||
| JPH0284272U (en) * | 1988-12-20 | 1990-06-29 | ||
| JPH0410502U (en) * | 1990-05-10 | 1992-01-29 | ||
| JPH0684710U (en) * | 1993-05-14 | 1994-12-02 | 鹿島建設株式会社 | Uninterruptible distribution board |
| JPH0723906U (en) * | 1993-09-17 | 1995-05-02 | 株式会社東芝 | Distribution equipment connection device |
| JPH08251729A (en) * | 1995-03-13 | 1996-09-27 | Fujitsu Ltd | Extension structure of distribution board |
| JP3078512U (en) * | 2000-12-22 | 2001-07-10 | 株式会社サンコーシヤ | Switchboard |
-
2001
- 2001-08-24 JP JP2001254270A patent/JP2003070109A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6412407U (en) * | 1987-07-09 | 1989-01-23 | ||
| JPH0284272U (en) * | 1988-12-20 | 1990-06-29 | ||
| JPH0410502U (en) * | 1990-05-10 | 1992-01-29 | ||
| JPH0684710U (en) * | 1993-05-14 | 1994-12-02 | 鹿島建設株式会社 | Uninterruptible distribution board |
| JPH0723906U (en) * | 1993-09-17 | 1995-05-02 | 株式会社東芝 | Distribution equipment connection device |
| JPH08251729A (en) * | 1995-03-13 | 1996-09-27 | Fujitsu Ltd | Extension structure of distribution board |
| JP3078512U (en) * | 2000-12-22 | 2001-07-10 | 株式会社サンコーシヤ | Switchboard |
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