JP2972276B2 - switchboard - Google Patents
switchboardInfo
- Publication number
- JP2972276B2 JP2972276B2 JP2110070A JP11007090A JP2972276B2 JP 2972276 B2 JP2972276 B2 JP 2972276B2 JP 2110070 A JP2110070 A JP 2110070A JP 11007090 A JP11007090 A JP 11007090A JP 2972276 B2 JP2972276 B2 JP 2972276B2
- Authority
- JP
- Japan
- Prior art keywords
- unit
- load
- conductor
- phase
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
- H02B1/34—Racks
- H02B1/36—Racks with withdrawable units
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/21—Bus-bar arrangements for rack-mounted devices with withdrawable units
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
- H02B11/04—Isolating-contacts, e.g. mountings or shieldings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Gas-Insulated Switchgears (AREA)
- Trip Switchboards (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電源側導体、負荷側導体等の主回路導体の配
置を改良した配電盤に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a switchboard with an improved arrangement of main circuit conductors such as a power supply side conductor and a load side conductor.
一般に受電設備は電源母線に複数の配電盤を並列接続
している。各配電盤は負荷ケーブルを介して負荷に接続
している。配電盤は函体内部に設けた仕切板を介して、
電気ユニツト（室）と導電ユニツトとを形成している。
仕切板に電源側断路部と負荷側断路部とを設けている。
導電ユニツト側に電源側断路部と電源母線を接続し、負
荷側断路部に負荷ケーブルを接続している。そして、遮
断器を電気室内に出入することにより、遮断器と両断路
部とが電気的に接離する。配電盤は負荷供給電力の需要
が増加し、多種類になると配電盤の数も増加し、複数の
配電盤を列盤に配置しているので、設備面積が多くなる
欠点がある。Generally, a power receiving facility has a plurality of switchboards connected in parallel to a power supply bus. Each switchboard is connected to a load via a load cable. The switchboard is provided via a partition provided inside the box.
An electric unit (chamber) and a conductive unit are formed.
A power supply side disconnecting portion and a load side disconnecting portion are provided on the partition plate.
The power supply side disconnecting part and the power supply bus are connected to the conductive unit side, and the load cable is connected to the load side disconnecting part. When the circuit breaker enters and exits the electrical room, the circuit breaker and the two disconnecting portions are electrically connected and separated. There is a drawback that the demand for load supply power increases and the number of switchboards increases as the number of switchboards increases, and a plurality of switchboards are arranged in a row board, so that there is a disadvantage that the equipment area increases.
そこで、列盤数の低減策として例えば実開昭60−2530
5号公報に記載されているように、函体内に上下３段乃
至４段に仕切り、各仕切段毎に電気ユニツトを段積する
ようにした段積型配電盤が提案されている。Therefore, as a measure to reduce the number of trains, for example,
As described in Japanese Patent Publication No. 5 (1993), there has been proposed a stacked switchboard in which a housing is partitioned into three or four stages in the upper and lower stages, and an electric unit is stacked for each partitioning stage.
この段積型配電盤の導電ユニツト内は各段の負荷ケー
ブルを互いにラツプしないように配置して、配線作業を
容易にしている。In the conductive unit of the stacked switchboard, the load cables of each stage are arranged so as not to wrap each other, thereby facilitating the wiring work.
しかしながら、函体の奥行寸法が増加し、列盤の低減
の割には設置面積を低減することが困難であつた。そこ
で、電気ユニツトを多段積みした多段積型配電盤が考え
られるが、高さ寸法が高くなり、耐震性が悪くなる。However, the depth of the box increased, and it was difficult to reduce the installation area in spite of the reduction in the number of rows. To solve this problem, a multi-stage switchboard in which electric units are stacked in multiple stages is conceivable. However, the height is increased and the earthquake resistance is deteriorated.
本発明の目的は、高さ寸法を縮小したので、重心が下
がり、耐震性を向上した配電盤を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a switchboard having a reduced height, a lower center of gravity, and improved earthquake resistance.
本発明の他の目的は、安全に保守・点検ができる配電
盤を提供することにある。Another object of the present invention is to provide a switchboard that can be safely maintained and inspected.
この目的を達成するために本願発明の配電盤は、函体
内に少なくとも二段以上重ねた電気ユニットと、前記電
気ユニットの少なくとも一方側に形成したケーブルユニ
ット、電気ユニットの奥行方向に沿って順次配置された
３相の電源側母線と、電気ユニットとケーブルユニット
とに奥行方向に沿って順次配置され絶縁被覆された絶縁
層を有する３相の負荷側導体とを備え、前記電気ユニッ
トの前記絶縁層の上側に接地と接続している被覆された
導電層を備えていることにある。In order to achieve this object, the switchboard of the present invention is provided with an electric unit stacked at least two steps in a box, a cable unit formed on at least one side of the electric unit, and sequentially arranged along a depth direction of the electric unit. A three-phase power source-side bus, and a three-phase load-side conductor having an insulating layer that is sequentially arranged along the depth direction on the electric unit and the cable unit and has an insulating coating. It has a coated conductive layer on the upper side that is connected to ground.
この結果、絶縁層内の充電電流は導電層より接地に流
れ、絶縁層表面に充電電圧が印加されなくなり、絶縁層
の上面と上面に対応する電気ユニツトの天井面との間の
絶縁間隙を必要としないので、この分函体の高さ寸法を
縮少化できるようになつた。As a result, the charging current in the insulating layer flows from the conductive layer to the ground, and no charging voltage is applied to the surface of the insulating layer. Therefore, an insulating gap is required between the upper surface of the insulating layer and the ceiling surface of the electric unit corresponding to the upper surface. As a result, the height of the box can be reduced.
以下、本発明の実施例を図面により説明する。第１図
ないし第９図は本発明の多段積み型配電盤を示すもの
で、次のように構成されている。Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 9 show a multi-stage switchboard according to the present invention, which is configured as follows.
鋼板を折曲げて形成した函体１は、正面側に挿入口を
有し、函体１の挿入口左右側面1Aに開閉自在な扉２を取
付けている。扉２を開放した函体内に２枚の仕切板3A,3
Bを取付けている。A box 1 formed by bending a steel plate has an insertion port on the front side, and a door 2 that can be opened and closed is attached to the left and right side surfaces 1A of the insertion port of the box 1. Two partitions 3A, 3 in the box with the door 2 opened
B is installed.
仕切板3Aと仕切板3Bとの間に電気ユニツト４を形成し
ている。各仕切板3A,3Bと函体側面1Aとの間にケーブル
ユニツト５を形成している。電気ユニツト４は仕切板3A
と仕切板3Bとの間に縦方向に６枚の支持板3Cを取付け
て、６段積み重ねた電気ユニツト４を形成している。各
段積した電気ユニツト４の両側に隣接してケーブルユニ
ツト５を形成している。電気ユニツト4,ケーブルユニツ
ト５の上側には第３図，第５図に示すように母線ユニツ
ト６と共に、電気回路ユニツトを形成している。An electric unit 4 is formed between the partition plate 3A and the partition plate 3B. A cable unit 5 is formed between each of the partition plates 3A, 3B and the box side surface 1A. The electric unit 4 is a partition plate 3A
Six support plates 3C are attached in the vertical direction between the electric unit 4 and the partition plate 3B to form an electric unit 4 stacked in six stages. A cable unit 5 is formed adjacent to both sides of each stacked electric unit 4. On the upper side of the electric unit 4 and the cable unit 5, an electric circuit unit is formed together with the bus unit 6, as shown in FIGS.
母線ユニツト６は３相電源母線７の縦母線８とを接続
している。縦母線８は６段積電気ユニツト４の段積方向
に沿つて配置されている。真空遮断器20が電気ユニツト
内を移動することにより、真空遮断器20が縦母線８と横
導体32とに電気的に接離する。３相横導体32は電気ユニ
ツト４とケーブルユニツト５との間に配置されている。
３相横導体32の電気ユニツト側端は真空遮断器20と接離
し、ケーブルユニツト側端はケーブルヘツド38を介して
負荷ケーブル43に接続している。The bus unit 6 connects the vertical bus 8 of the three-phase power bus 7. The vertical buses 8 are arranged along the stacking direction of the six-stack electric unit 4. As the vacuum circuit breaker 20 moves within the electric unit, the vacuum circuit breaker 20 is electrically connected to and separated from the vertical bus 8 and the horizontal conductor 32. The three-phase horizontal conductor 32 is arranged between the electric unit 4 and the cable unit 5.
The electrical unit side end of the three-phase horizontal conductor 32 is connected to and separated from the vacuum circuit breaker 20, and the cable unit side end is connected to a load cable 43 via a cable head 38.
電源母線７の各相は母線室内で真空遮断器20の移動方
向と直交する方向に配置され、電気ユニツト側電源母線
端は縦母線８の一端に接続している。Each phase of the power supply bus 7 is arranged in the bus chamber in a direction orthogonal to the moving direction of the vacuum circuit breaker 20, and the power supply bus end of the electric unit is connected to one end of the vertical bus 8.
縦母線８の一端は電気ユニツト上より函体裏面側に延
び、途中で下側方向に折曲げられて他端が電気ユニツト
４の段積方向に延びている。縦母線８は、第７図，第８
図に示すように導電部材が絶縁外被8Aに被覆されてお
り、厚部L1の寸法が幅部L2の寸法より狭い寸法の帯状導
体つまりブスバーを使用している。そして幅部L2が電気
ユニツト４と対向する向きに配置され、縦母線８は母線
側絶縁ユニツト10に支持されている。One end of the vertical bus bar 8 extends from above the electric unit toward the back of the box, is bent downward in the middle, and the other end extends in the direction of stacking of the electric unit 4. The vertical bus 8 is shown in FIG.
Is conductive member as shown in Figure is covered with the insulating sheath 8A, the dimensions of the thick portion L 1 is using a strip conductor, i.e. busbar narrower dimensions than the width portion L 2. The width portion L 2 is disposed in a direction opposite to the electric Yunitsuto 4, the vertical bus 8 is supported on the bus side insulating Yunitsuto 10.
母線側絶縁ユニツト10は電気ユニツト４と函体裏面1B
との間に配置され、仕切板3A,3Bにネジ等の締付手段に
より支持されており、絶縁部材たとえばエポキシ樹脂に
より構成されている。母線側絶縁ユニツト10は第６図
（Ａ），第７図に示すように函体裏面1Bに対応する背面
11の周囲を側壁12で包囲し、内部に接続ユニツト13を形
成している。Bus-side insulation unit 10 consists of electric unit 4 and box back 1B
And is supported by the partition plates 3A and 3B by fastening means such as screws, and is made of an insulating member such as an epoxy resin. As shown in FIGS. 6A and 7, the bus-side insulation unit 10 has a back surface corresponding to the back surface 1B of the box.
The periphery of 11 is surrounded by a side wall 12, and a connection unit 13 is formed inside.
接続ユニツト内は２枚の相間絶縁バリヤ12Dにより仕
切られ、３個の接続ユニツト13を形成している。上およ
び下側壁12Aは左および右側壁12Bより延びて仕切板3Bに
当接し、締付手段により上および下側壁12Aを仕切板3A
に取付けている。The inside of the connection unit is partitioned by two inter-phase insulating barriers 12D to form three connection units 13. The upper and lower side walls 12A extend from the left and right side walls 12B and abut against the partition plate 3B, and the upper and lower side walls 12A are separated by the fastening means.
It is attached to.
また、上，下側壁12Aおよび左右側壁12Bと仕切板3A,3
Bおよび函体裏面1Bとに包囲された放圧路（第３図，第
４図）14を形成している。放圧路14は左右側壁12B以外
の包囲面の一部たとえば函体裏面1Bに閉鎖板15（第３
図，第４図）を取付けている。閉鎖板15は函体裏面1Bに
貫通穴を形成し、この貫通穴を閉鎖板で塞いでいる。閉
鎖板は通常圧力で貫通穴を塞ぎ、放圧路の圧力が増大す
ると開放する働きをする。The upper and lower side walls 12A and the left and right side walls 12B and the partition plates 3A, 3
A pressure release path (FIGS. 3 and 4) 14 surrounded by B and the back surface 1B of the box is formed. The pressure release passage 14 is provided on a part of the surrounding surface other than the left and right side walls 12B, for example, on
(Fig. 4). The closing plate 15 has a through hole formed in the box back surface 1B, and the through hole is closed by the closing plate. The closure plate normally closes the through hole with pressure and opens when the pressure in the pressure relief passage increases.
接続ユニツト内の背面に設けた取付座16は、内部にネ
ジ穴を形成している。取付座16の位置は接続ユニツト13
の中央より上側（下側でもよい）にずらして設けてあ
る。接続ユニツト13の上，下側面12Aに貫通穴17を形成
している。この貫通穴17を貫通した縦母線８は、ネジ等
の締付手段により取付座16に取付けられている。接続ユ
ニツト内の縦母線８の一部は絶縁外被8Aを除去して、導
電部材を露出した第１固定接触子18を形成している。第
１固定接触子18は真空遮断器20の第１可動接触子21と電
気的に接離する。接離時に取付座16をずらして配置すれ
ば、取付座16が無い時の貫通穴間の縦母線８を長さ寸法
に比べて、取付座16と下側貫通穴17との間の縦母線寸法
を短くできるので、第１可動接触子21が第１固定接触子
18に接触する時の押圧力で変形しにくい利点がある。The mounting seat 16 provided on the back surface in the connection unit has a screw hole formed therein. The position of the mounting seat 16 is the connection unit 13
Are shifted upward from the center (or lower). Through holes 17 are formed in the upper and lower side surfaces 12A of the connection unit 13. The vertical bus bar 8 passing through the through hole 17 is mounted on the mounting seat 16 by a fastening means such as a screw. A part of the vertical bus bar 8 in the connection unit has the insulating jacket 8A removed to form the first fixed contact 18 exposing the conductive member. The first fixed contact 18 electrically contacts and separates from the first movable contact 21 of the vacuum circuit breaker 20. If the mounting seat 16 is displaced at the time of contact and separation, the vertical bus 8 between the through holes when the mounting seat 16 is not present is compared with the length dimension, and the vertical bus between the mounting seat 16 and the lower through hole 17 is compared. Since the size can be shortened, the first movable contact 21 is the first fixed contact.
There is an advantage that it is hard to be deformed by the pressing force when it comes into contact with 18.
また、第１固定接触子18の厚部L1が第１可動接触子21
と接離するようにすれば、幅部L2が第１可動接触子に接
離するのに比べて、奥行方向の寸法を縮少できる。真空
遮断器20は、第６図（ｃ），第７図に示し説明する。ロ
ーラ23Aを備えた台車23は、絶縁部材より成る遮断器側
絶縁ユニツト24を取付けている。ユニツト内に３相真空
バルブから成る遮断部25を水平方向に配置している。各
遮断部間の絶縁ユニツトの側壁26間には、窪部27を形成
している。窪部27は第７図に示す相間絶縁バリヤ12Dに
嵌合する。The thickness portion L 1 of the first stationary contact 18 first movable contact 21
If the the toward and away from, as compared with the width portion L 2 to contact and separation on the first movable contact, the depth dimension shrinkage Dekiru small. The vacuum circuit breaker 20 will be described with reference to FIGS. 6 (c) and 7. The carriage 23 provided with the roller 23A has a circuit breaker-side insulating unit 24 made of an insulating member mounted thereon. In the unit, a shut-off section 25 composed of a three-phase vacuum valve is arranged horizontally. Depressed portions 27 are formed between the side walls 26 of the insulating unit between the cutoff portions. The recess 27 fits into the interphase insulating barrier 12D shown in FIG.
遮断部25の内部は図示していないが一対の電極を対応
配置し、各電極から遮断部外にロツド25Aが延びてい
る。一方の可動側ロツドが移動することにより、一方の
電極から他方の電極が移動して開閉する。一般に真空遮
断器はロツドの移動方向つまり遮断部の開閉方向の寸法
が真角方向の高さ寸法より長い。たとえば遮断部の開閉
方向と高さ方向との寸法は約3:1の割合である。Although not shown, a pair of electrodes are arranged in the inside of the blocking portion 25, and a rod 25A extends from each electrode to the outside of the blocking portion. When one of the movable rods moves, the other electrode moves from one electrode to open and close. In general, the size of the vacuum circuit breaker in the direction of rod movement, that is, in the direction of opening and closing of the breaking portion, is longer than the height in the true angle direction. For example, the dimension between the opening and closing direction and the height direction of the blocking portion is about 3: 1.
そして、本発明では電気ユニツト内の真空遮断器20の
移動方向と同方向に開閉するように遮断部25を配置し
た。遮断部25の前端側ロツド25Aおよび後端側ロツドに
第１可動接触子21および第２可動接触子22を取付けてい
る。第１可動接触子21は第１固定接触子18に接離する。
第２可動接触子22は第１可動接触子21より上方側に延
び、かつ先端が奥行方向に開口し、第６図ないし第９図
に示す第２固定接触子31に接離する。第２固定接触子31
は負荷側断路部ユニツト31に設けられている。Further, in the present invention, the breaking unit 25 is arranged so as to open and close in the same direction as the moving direction of the vacuum circuit breaker 20 in the electric unit. A first movable contact 21 and a second movable contact 22 are attached to a front end rod 25A and a rear end rod of the blocking portion 25. The first movable contact 21 comes into contact with and separates from the first fixed contact 18.
The second movable contact 22 extends above the first movable contact 21 and has a distal end opening in the depth direction, and comes into contact with and separates from the second fixed contact 31 shown in FIGS. 6 to 9. Second fixed contact 31
Are provided on the load-side disconnection unit 31.
そして、第１可動接触子21と第２可動接触子22との引
出位置は、挿入側から視ると、上述の実施例は上，下方
向にずらして、配置し、遮断部25の奥行方向寸法を縮少
しているが、左，右方向つまり直角方向又は斜め方向に
配置しても同様の効果を達成できる。When the first movable contact 21 and the second movable contact 22 are pulled out from the insertion side, the above-described embodiment is displaced upward and downward, and is disposed in the depth direction of the blocking portion 25. Although the dimensions are reduced, the same effect can be achieved by arranging them in left and right directions, that is, in a right angle direction or an oblique direction.
また、本発明では第２可動接触子側のロツドを移動す
るようにして、扉側からロツド移動速度等の調整をしや
すいようにした。Further, in the present invention, the rod on the second movable contact side is moved so that the rod moving speed and the like can be easily adjusted from the door side.
負荷側断路部ユニツト30は電気ユニツト４とケーブル
ユニツト５との間に配置されると共に、仕切板3A,3B間
に支持され、次のように構成されている。The load-side disconnecting unit 30 is disposed between the electric unit 4 and the cable unit 5 and is supported between the partition plates 3A and 3B, and is configured as follows.
３相横導体32A〜32Cは、電気ユニツト４とケーブルユ
ニツト５に配置されている。電気ユニツト側の各横導体
32A〜32Cは分岐導体33A〜33Cを接続している。またケー
ブルユニツト側の各横導体32A〜32Cは途中で扉側方向に
折曲げられて突出導体34A〜34Cを形成している。これら
の各横導体32,分岐導体33,突出導体34は絶縁樹脂たとえ
ばエポキシ樹脂で被覆し、固定側絶縁層35を形成してい
る。The three-phase horizontal conductors 32A to 32C are arranged in the electric unit 4 and the cable unit 5. Each horizontal conductor on the electrical unit side
32A to 32C connect the branch conductors 33A to 33C. The horizontal conductors 32A to 32C on the cable unit side are bent in the middle toward the door side to form projecting conductors 34A to 34C. These horizontal conductors 32, branch conductors 33, and projecting conductors 34 are covered with an insulating resin such as an epoxy resin to form a fixed-side insulating layer 35.
固定側絶縁層35の第２可動接触子22と対応する個所に
３個の負荷接続ユニツト36を形成している。負荷接続ユ
ニツト36内は第２固定接触子31A,31B,31Cを配置してい
る。各固定接触子31A〜31Cは分岐導体33A〜33Cの先端に
形成されていると共に、第１固定接触子18と同様に厚部
L1で第２可動接触子22に接離する。Three load connection units 36 are formed on the fixed side insulating layer 35 at locations corresponding to the second movable contacts 22. The second fixed contacts 31A, 31B, 31C are arranged in the load connection unit 36. Each of the fixed contacts 31A to 31C is formed at the tip of the branch conductor 33A to 33C, and has the same thickness as the first fixed contact 18.
Toward or away from the second movable contact 22 at L 1.
固定側絶縁層35のケーブル室側は、第９図（Ａ），
（Ｂ）に示すように突出導体34A〜34Cの先端に接続部37
を設けている。接続部37は挿入プラグ型ケーブルヘツド
38を挿入している。挿入プラグ型ケーブルヘツド38は絶
縁樹脂部材たとえば絶縁ゴムでモールドし、挿入側絶縁
層39を形成している。The cable room side of the fixed-side insulation layer 35 is shown in FIG.
As shown in (B), connecting portions 37 are provided at the tips of the projecting conductors 34A to 34C.
Is provided. Connection part 37 is an insertion plug type cable head
38 is inserted. The insertion plug type cable head 38 is molded with an insulating resin member such as insulating rubber to form an insertion-side insulating layer 39.
電気ユニット側の固定側絶縁層の積層面上側および長
手方向及び奥行方向の左右側面に導電層40を被覆してい
る。つまり、第２可動接触子と対向していない絶縁層表
面に、導電層を被覆している。ケーブルユニツト側の固
定側絶縁層35,挿入側絶縁層39の各表面は、両絶縁層35,
39の当接面以外を導電層40により被覆している。またケ
ーブル室側の固定側絶縁層35は全面に導電層を設けてい
る。接地端子41は、接地線41Aを介して接地している。
ケーブルヘツド内に挿入部42を設け、挿入部42は負荷ケ
ーブル43に接続していると共に、挿入部42を接続部37に
挿入すると、固定側絶縁層35と挿入側絶縁層39との間に
間隙100が形成されるが、各絶縁層35,39に巻回した渡り
線44は、両絶縁層間の接地金属層間を電気的に接続し、
間隙により導電金属層40が電気的に遮断するのを防止し
て、ケーブルヘツド38の着脱時の感電を防止している。
渡り線の代わりに、絶縁層35,39の一方側に接触片を設
け、両接地層を接続してもよい。The conductive layer 40 covers the upper side of the lamination surface of the fixed-side insulating layer on the electric unit side and the left and right side surfaces in the longitudinal and depth directions. That is, the surface of the insulating layer not facing the second movable contact is covered with the conductive layer. The surfaces of the fixed-side insulating layer 35 and the insertion-side insulating layer 39 on the cable unit side are both insulating layers 35,
The other than the contact surface 39 is covered with a conductive layer 40. In addition, a conductive layer is provided on the entire surface of the fixed-side insulating layer 35 on the cable room side. The ground terminal 41 is grounded via a ground line 41A.
An insertion portion 42 is provided in the cable head, and the insertion portion 42 is connected to the load cable 43, and when the insertion portion 42 is inserted into the connection portion 37, between the fixed-side insulation layer 35 and the insertion-side insulation layer 39. Although the gap 100 is formed, the crossover 44 wound around each of the insulating layers 35 and 39 electrically connects the ground metal layer between both insulating layers,
The gap prevents the conductive metal layer 40 from being electrically interrupted, thereby preventing electric shock when the cable head 38 is attached or detached.
Instead of the crossover, a contact piece may be provided on one side of the insulating layers 35 and 39 to connect the ground layers.
固定側絶縁層35には方向性零相変流器45および変流器
46を着脱自在に取付けている。方向性零相変流45は電気
ユニツト４とケーブルユニツト５との間の固定側絶縁層
35に配置されているので、分割型を使用している。The fixed-side insulating layer 35 includes a directional zero-phase current transformer 45 and a current transformer.
46 is attached detachably. The directional zero-phase current transformer 45 is a fixed insulating layer between the electric unit 4 and the cable unit 5.
Since it is located at 35, the split type is used.
次に、本発明の配電盤による作用・効果を説明する。 Next, the operation and effect of the switchboard of the present invention will be described.
（１）本発明では電気ユニツト内で真空遮断器20の移動
方向と遮断部25の開閉方向とを同方向に配置した。この
ため、真空遮断器20の高さ寸法は、遮断部25の開閉方向
を高さ方向に配置したのに比べて、約3/1に高さ寸法を
縮少できるようになつた。(1) In the present invention, the moving direction of the vacuum circuit breaker 20 and the opening / closing direction of the breaking unit 25 are arranged in the same direction in the electric unit. For this reason, the height dimension of the vacuum circuit breaker 20 can be reduced to about 3/1 as compared with the case where the opening / closing direction of the interrupting section 25 is arranged in the height direction.
更に高さ寸法の縮少について検討をする。 Further, the reduction of the height dimension will be examined.
横導体32,分岐導体33および負荷ケーブル43等と被覆
した固定側絶縁層35および挿入側絶縁層36との間には絶
縁物静電容量が存在する。各導体からの漏洩電流は絶縁
静電容量に充電される。充電電流は本発明の導電層40,
接地線41Aを介して接地に流れるので、電位差はほとん
ど零である。このため、導電層40の表面にはほとんど充
電電圧が印加されておらず、負荷側断路部ユニツト30と
支持板3Cおよび天上板3Dとの間に形成されている間隙
は、ほとんど必要とせず、真空遮断器20の出入するのに
障害とならない間隙を形成していればよいから、電気ユ
ニツト4,ケーブルユニツト５の段積方向の寸法を更に縮
小できるので、導電層40を使用しない場合の段積型配電
盤に比べて、本発明の配電盤は段積方向の寸法を縮小し
た分、重心が下がり、大幅に耐震性を向上させることが
出来る。又ケーブルユニツト５は全体を縮少できる。ま
た、負荷側断路部ユニツト30に作業員が接触しても感電
することなく安全である。An insulator capacitance exists between the horizontal conductor 32, the branch conductor 33, the load cable 43, and the like, and the fixed-side insulating layer 35 and the insertion-side insulating layer 36 that are covered. The leakage current from each conductor charges the insulating capacitance. The charging current is the conductive layer 40 of the present invention,
Since the current flows to the ground via the ground line 41A, the potential difference is almost zero. For this reason, a charging voltage is hardly applied to the surface of the conductive layer 40, and a gap formed between the load-side disconnecting unit 30 and the support plate 3C and the top plate 3D is hardly needed. The gap in the stacking direction of the electric unit 4 and the cable unit 5 can be further reduced since a gap that does not hinder the entrance and exit of the vacuum circuit breaker 20 can be further reduced. Compared with the stacked switchboard, the switchboard of the present invention can reduce the center of gravity by the reduced size in the stacking direction, and can greatly improve the earthquake resistance. Further, the entire cable unit 5 can be reduced. Further, even if an operator comes into contact with the load-side disconnection unit 30, the electric power supply is safe without electric shock.
（２）本発明では両可動接触子21,22が両固定接触子18,
31に接触した状態で、相間絶縁バリヤ12Dが窪部27に嵌
合されている。この結果、各相の第１可動接触子21間の
相間沿面絶縁距離が著しく長くなり、この分函体幅寸法
が縮少できるようになつた。(2) In the present invention, both movable contacts 21 and 22 are fixed
The inter-phase insulating barrier 12D is fitted in the recess 27 while in contact with the base 31. As a result, the inter-phase creepage insulation distance between the first movable contacts 21 of each phase is significantly increased, and the width of the box body can be reduced.
（３）この実施例では、第２図と第９図（Ａ），（Ｂ）
よりケーブルユニット内に配置された横導体端部32A〜3
2Cの各相を挿入口側に突出導体34を突出させ、横導体端
部の各相及び突出導体を絶縁層35で被覆し、突出導体側
の絶縁層を横導体端部側の絶縁層より挿入口側に突出さ
せて凹凸を形成して、隣接する突出導体間の沿面距離が
狭くなり、ケーブルユニットの幅を狭くすることによ
り、配電盤を縮小出来る。又突出導体34を挿入口側に突
出できるので、扉２を扉を開放すれば、通路などに面し
ているので作業場所が広く取れる等により作業が著しく
しやすくなつた。(3) In this embodiment, FIGS. 2 and 9 (A) and (B)
Lateral conductor ends 32A to 3 arranged in the cable unit
Each phase of 2C is made to project the projecting conductor 34 toward the insertion port side, and each phase and the projecting conductor at the end of the horizontal conductor are covered with the insulating layer 35, and the insulating layer at the projecting conductor side is separated from the insulating layer at the horizontal conductor end. By projecting to the insertion port side to form irregularities, the creepage distance between adjacent projecting conductors is reduced, and the width of the cable unit is reduced, whereby the power distribution board can be reduced. In addition, since the projecting conductor 34 can protrude toward the insertion port side, if the door 2 is opened, since the door 2 is facing a passage or the like, a large work place can be taken, and the work can be easily performed.
また、接続部37にケーブルヘツド38を着脱する時に
は、固定側絶縁層35,可動側絶縁層36に電位差がないの
で、感電することなく安全に作業が出来る。In addition, when attaching and detaching the cable head 38 to and from the connection portion 37, since there is no potential difference between the fixed insulating layer 35 and the movable insulating layer 36, the operation can be performed safely without electric shock.
更に、この実施例の負荷ケーブル43は６段積電気ユニ
ツト４の左側と右側とに各３本ずつ引出して、各ケーブ
ルユニツト５に分散して配置することにより、各ケーブ
ルユニツト内での負荷ケーブル43の配列を少なくして、
ケーブルユニツト内の作業空間を広くして、負荷ケーブ
ル43の配線作業を容易に出来るようにした。Further, the load cables 43 of this embodiment are respectively drawn out to the left and right sides of the six-stage electric unit 4 by three, and are distributed and arranged in the respective cable units 5, so that the load cables in the respective cable units are separated. 43 sequences reduced,
The work space inside the cable unit has been widened to facilitate the work of wiring the load cable 43.
更に、この実施例では、作業員が固定側絶縁層35に方
向性零相変流器45,変流器46を装着する時には、固定側
絶縁層35に各変流器45,46を挿入すれば、各変流器は固
定側絶縁層35に支持出来るので、従来のように装着時に
作業員が各変流器を支持したり、或いは支持する治具を
必要とせず、組立作業が著しく容易になつた。この場
合、零相変流器は分割型を使用していると共に、従来負
荷ケーブルに零相変流器を装着したのに比べ、本発明で
は固定側絶縁層35に設けた分地絡電流の検出範囲を広く
できる。Further, in this embodiment, when the worker attaches the directional zero-phase current transformer 45 and the current transformer 46 to the fixed-side insulating layer 35, the current transformers 45 and 46 are inserted into the fixed-side insulating layer 35. For example, each current transformer can be supported on the fixed-side insulating layer 35, so that the worker does not need to support each current transformer at the time of mounting, or a jig for supporting the current transformer as in the conventional case, and the assembly work is extremely easy. It has become. In this case, the zero-phase current transformer uses a split type, and in contrast to the conventional case where a zero-phase current transformer is attached to a load cable, in the present invention, the split-to-ground fault current provided on the fixed-side insulating layer 35 is reduced. The detection range can be widened.
（４）この実施例では、配線盤内の遮断不能に伴うフラ
シユオーバーが発生した時の異常圧力は、第４図，第７
図に示すように放圧する。すなわち、遮断器20での短絡
事故によりイオン化したガスが発生すると、イオン化ガ
スＰは放圧路14を通つて、閉鎖板15が鎖線のように開放
され、外部に放圧し、イオン化ガスＰが電源側絶縁ユニ
ツト10と函体裏面1Bとの間に廻り込むのを防止すること
によつて、縦母線間の母線室６で直接短絡するのを防止
して、事故の拡大を防止している。(4) In this embodiment, the abnormal pressure when a flashover occurs due to the inability to shut off the inside of the wiring board is shown in FIGS.
Release pressure as shown. That is, when an ionized gas is generated due to a short circuit accident in the circuit breaker 20, the ionized gas P passes through the pressure release path 14, the closing plate 15 is opened like a dashed line, and the pressure is released to the outside, and the ionized gas P is supplied to the power source. By preventing the wraparound between the side insulation unit 10 and the back surface 1B of the box, a short circuit is prevented directly in the bus room 6 between the vertical buses, thereby preventing the spread of the accident.
尚、上述の実施例では多段積型配電盤について説明し
たが、普通の段積みでない配電盤についても使用でき
る。In the above-described embodiment, the multi-stage switchboard is described. However, a normal non-stack switchboard may be used.
以上のように、本発明の配電盤は、高さ寸法又は幅寸
法を縮小できるので、導電層40を使用しない場合に配電
盤に比べて、本発明の配電盤は段積方向の寸法を縮小し
た分、大幅に耐震性を向上させることが出来る。又配電
盤内の作業が安全にできるようになつた。As described above, the switchboard of the present invention can reduce the height dimension or the width dimension, so that the switchboard of the present invention has a reduced dimension in the stacking direction, compared to the switchboard when the conductive layer 40 is not used. The seismic resistance can be greatly improved. In addition, the work inside the switchboard can be done safely.
第１図は本発明の実施例として示した多段積型配電盤の
正面図、第２図は第１図のII−II線断面図、第３図は第
２図のIII−III線に沿つて一部を切欠いて視た時の切欠
斜視図、第４図は第１図の側面図、第５図は第１図の電
気回路を示す回路図、第６図（Ａ）ないし（Ｄ）は第１
図の多段積型配電盤内の要部を示す分解斜視図、第７
図、第８図は電源断路部附近の要部を示す斜視図、第９
図（Ａ）および同（Ｂ）は負荷側断路部ユニツトの一部
を切欠いて視た時の切欠斜視図および側断面図である。 １……函体、４……電気ユニツト、６……ケーブルユニ
ツト、８……縦母線、18……第１固定接触子、20……真
空遮断器、21……第１可動接触子、25……遮断部、30…
…負荷側断路部ユニツト、31……第２固定接触子、38…
…ケーブルヘツド、40……導電層、43……負荷ケーブ
ル。1 is a front view of a multi-stage switchboard shown as an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a view taken along the line III-III of FIG. FIG. 4 is a side view of FIG. 1, FIG. 5 is a circuit diagram showing an electric circuit of FIG. 1, and FIGS. First
FIG. 7 is an exploded perspective view showing a main part in the multi-stage switchboard shown in FIG.
FIG. 8 is a perspective view showing a main part near the power disconnecting part, and FIG.
(A) and (B) are a cutaway perspective view and a sectional side view when a part of the load-side disconnection unit is cut away and viewed. DESCRIPTION OF SYMBOLS 1 ... Box, 4 ... Electric unit, 6 ... Cable unit, 8 ... Vertical bus, 18 ... First fixed contact, 20 ... Vacuum breaker, 21 ... First movable contact, 25 …… Blocking part, 30…
... Load-side disconnection unit, 31 ... Second fixed contact, 38 ...
... cable head, 40 ... conductive layer, 43 ... load cable.
Claims (5)
ニットと、前記電気ユニットの少なくとも一方側に形成
したケーブルユニットと、電気ユニットの奥行方向に沿
って順次配置された３相の電源側母線と、電気ユニット
とケーブルユニットとに奥行方向に沿って順次配置され
絶縁被覆された絶縁層を有する３相の負荷側導体とを備
え、前記電気ユニットの前記絶縁層の上側に接地と接続
している被覆された導電層を備えたことを特徴とする配
電盤。An electric unit having at least two layers stacked in a housing, a cable unit formed on at least one side of the electric unit, and a three-phase power-supply-side bus arranged sequentially along a depth direction of the electric unit. And a three-phase load-side conductor having an insulating layer coated and insulated sequentially in the depth direction on the electric unit and the cable unit, and connected to ground on the upper side of the insulating layer of the electric unit. Switchboard comprising a coated conductive layer.
ケーブルとに接続する接続部を設けたことを特徴とする
請求項１記載の配電盤。2. The switchboard according to claim 1, wherein connection portions for connecting to a circuit breaker and a load cable are provided on both sides of the load-side conductor.
たことを特徴とする請求項１記載の配電盤。3. The switchboard according to claim 1, wherein a zero-phase current transformer is provided in the conductive layer on the load side.
された各相を絶縁部材の側壁で包囲し母線側絶縁ユニッ
トを設け、母線側絶縁ユニットの電気ユニットの対応面
側に開口部を有する各相の母線室と、母線室内を縦方向
に延びる電源側母線と、母線室の両端側壁と函体側面側
の仕切板との間及び母線室背面と函体裏面にとの間に設
けた放圧路と、放圧路内の圧力を函体裏面に設けた閉鎖
板を開放して排気することを特徴とする請求項１記載の
配電盤。4. A bus-side insulating unit is provided by surrounding each phase disposed between the electric unit and the back surface of the housing with a side wall of an insulating member, and an opening is provided on a corresponding side of the electric unit of the bus-side insulating unit. The bus room of each phase having, and the power supply side bus extending vertically in the bus room, between the both side walls of the bus room and the partition plate on the side of the housing, and between the back of the bus room and the back of the housing The power distribution panel according to claim 1, wherein the pressure release path provided and the pressure in the pressure release path are exhausted by opening a closing plate provided on the back surface of the box.
負荷側導体の各相を途中で挿入口側に向きを変えた突出
導体とを備え、負荷側導体の各相を途中で挿入口側に向
きを変える位置を互いに違った位置で行い、且つ突出導
体の各相を分散して挿入口側に向け、各相の負荷側導体
及び突出導体を絶縁層で被覆し、突出導体側絶縁層を負
荷側導体部側絶縁層より挿入口側に突出させることを特
徴とする請求項１記載の配電盤。5. A protruding conductor in which each phase of the load-side conductor disposed in the cable unit is turned halfway toward an insertion port side, and each phase of the load-side conductor is turned halfway to an insertion port side. The orientation is changed at different positions, and the phases of the projecting conductor are dispersed and directed toward the insertion port, the load-side conductor and the projecting conductor of each phase are covered with an insulating layer, and the projecting conductor-side insulating layer is 2. The switchboard according to claim 1, wherein the switchboard projects from the load-side conductor portion-side insulating layer toward the insertion port.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1-121542 | 1989-05-17 | ||
| JP12154289 | 1989-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374117A JPH0374117A (en) | 1991-03-28 |
| JP2972276B2 true JP2972276B2 (en) | 1999-11-08 |
Family
ID=14813827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2110070A Expired - Fee Related JP2972276B2 (en) | 1989-05-17 | 1990-04-27 | switchboard |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2972276B2 (en) |
| KR (1) | KR100205675B1 (en) |
| DE (1) | DE4015040C2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2874428B2 (en) * | 1992-02-14 | 1999-03-24 | 株式会社日立製作所 | switchboard |
| JP2874502B2 (en) * | 1993-02-16 | 1999-03-24 | 株式会社日立製作所 | switchboard |
| DE19606597A1 (en) * | 1996-02-22 | 1997-08-28 | Abb Patent Gmbh | Medium or low voltage switchgear |
| DE10040912C2 (en) * | 2000-08-21 | 2002-10-02 | Ritter Starkstromtech | Electrical system, in particular for the medium-voltage range, with a retractable insert that can be moved by means of a crank drive |
| KR100371372B1 (en) * | 2000-10-31 | 2003-02-07 | 엘지산전 주식회사 | Mechanism for separated operating ds/es of gas insulated switchgear |
| WO2003049245A1 (en) | 2001-12-07 | 2003-06-12 | Mitsubishi Denki Kabushiki Kaisha | Switch gear and multi-layer switch gear |
| DE10204992A1 (en) * | 2002-02-06 | 2003-08-14 | Wieland Electric Gmbh | Insert module for electrical installation has slots with spaced-apart contact surfaces for receiving contact rail and establishing contact |
| JP5017015B2 (en) * | 2007-08-10 | 2012-09-05 | 株式会社東芝 | Metal closed switchgear |
| DE102007038658A1 (en) * | 2007-08-15 | 2009-02-19 | Ids-Technology Gmbh | Functional wall e.g. energy transfer or communication wall, for use in switchgear cabinet, has recess for fastening of connectors and/or contacts with insertion module at wall for data transmission |
| KR100951050B1 (en) * | 2009-07-02 | 2010-04-05 | (주)로하스에스지 | Motor control center, low voltage switchgear and control unit |
| KR101013064B1 (en) | 2010-08-20 | 2011-02-14 | 대동전자(주) | The distributing board having the two area testing current transformer device and electronic controller |
| EP2557643A1 (en) * | 2011-08-10 | 2013-02-13 | Eaton Corporation | Motor control center and bus assembly therefor |
| FR3019943B1 (en) * | 2014-04-11 | 2017-08-25 | Schneider Electric Ind Sas | DRAWER POSITIONING ASSEMBLY FOR AN ELECTRICAL BOARD, ELECTRICAL BOARD COMPRISING SUCH AN ASSEMBLY AND METHOD FOR ASSEMBLING THE SAME |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE643309A (en) * | 1963-08-01 | |||
| US3735065A (en) * | 1971-10-26 | 1973-05-22 | Ite Imperial Corp | Low profile circuit breaker with staggered terminals |
| US4305114A (en) * | 1979-06-19 | 1981-12-08 | Tokyo Shibaura Denki Kabushiki Kaisha | Motor control center |
| JPS56106010U (en) * | 1980-01-16 | 1981-08-18 | ||
| DE3243063A1 (en) * | 1982-11-22 | 1984-05-24 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | CABINET OR SCAFFOLDING FOR INSERTING INSERT ELECTRICAL SYSTEMS |
| JPH0516808Y2 (en) * | 1985-07-16 | 1993-05-06 | ||
| JPH0750963B2 (en) * | 1987-10-26 | 1995-05-31 | 株式会社日立製作所 | Multi-stage closed switchboard |
| AU658373B2 (en) * | 1990-11-06 | 1995-04-13 | Fgn, Inc. | Esters and amides of substituted pyrrole acetic acids |
-
1990
- 1990-04-27 JP JP2110070A patent/JP2972276B2/en not_active Expired - Fee Related
- 1990-04-28 KR KR1019900006026A patent/KR100205675B1/en not_active IP Right Cessation
- 1990-05-10 DE DE4015040A patent/DE4015040C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0374117A (en) | 1991-03-28 |
| KR900019300A (en) | 1990-12-24 |
| DE4015040C2 (en) | 1995-05-11 |
| DE4015040A1 (en) | 1990-11-22 |
| KR100205675B1 (en) | 1999-07-01 |
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