JP5351243B2 - switchboard - Google Patents

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Publication number
JP5351243B2
JP5351243B2 JP2011260237A JP2011260237A JP5351243B2 JP 5351243 B2 JP5351243 B2 JP 5351243B2 JP 2011260237 A JP2011260237 A JP 2011260237A JP 2011260237 A JP2011260237 A JP 2011260237A JP 5351243 B2 JP5351243 B2 JP 5351243B2
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switchboard
drawer
load
cable
type device
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JP2012070627A (en
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伸夫 鈴木
吉廣 池野
啓 岩本
竜一 中野
寿博 児玉
潤 山川
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Meidensha Corp
Fuji Electric Co Ltd
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Meidensha Corp
Fuji Electric Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00Switchgear having carriage withdrawable for isolation
    • H02B11/26Arrangements of fuses, resistors, voltage arresters or the like

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  • Trip Switchboards (AREA)
  • Patch Boards (AREA)

Description

本発明は、高圧受配電設備に用いられる配電盤に1乃至は複数台引き出し可能に収納される高圧真空遮断器などの配電盤に関する。   The present invention relates to a switchboard such as a high-pressure vacuum circuit breaker that is housed in a switchboard used in a high-voltage power distribution facility so that one or a plurality of units can be pulled out.

従来、配電盤に収納される高圧真空遮断器などの引出形機器は、配電盤の正面から奥行き方向及びこの逆方向に移動させる構成が一般的である。このため、引出形機器を奥行き方向へ移動させて母線及び負荷ケーブルに接続させると共に、正面方向に移動させて母線及び負荷ケーブルから切り離す電源側(母線側)及び負荷側の断路部は、引出形機器の背面側に上下、左右に並べて搭載される構成となっている。引出形機器を複数収納する場合には、縦形の直方体形状の配電盤の高さ方向に多段積みするのが一般的である。   2. Description of the Related Art Conventionally, a drawer type device such as a high-pressure vacuum circuit breaker housed in a switchboard is generally configured to move in the depth direction and the opposite direction from the front of the switchboard. For this reason, the drawer type device is moved in the depth direction to be connected to the bus and the load cable, and the power source side (bus side) and the load side disconnection part are moved in the front direction and disconnected from the bus and the load cable are drawn out. It is configured to be mounted side by side on the back side of the device. When storing a plurality of drawer-type devices, it is common to stack them in the height direction of a vertical rectangular parallelepiped switchboard.

このような構成の配電盤の例を図15及び図16に示す。図15(a)の側断面図及び(b)の背断面図は、引出形機器を盤高さ方向に多段積み実装するためにケーブル室を背面側に配置した配電盤の構成例であり、図16(a)の正断面図及び(b)の右側断面図は、ケーブル室を側面側に配置した配電盤の構成例である。
まず、図15に示す配電盤1は、縦長の直方体形状を成し、この内部が正面側と裏面側とに仕切り板で区切られることにより裏面側にケーブル室1a、正面側に複数のユニット室1b,1c,1dが設けられている。各ユニット室1b〜1dは、配電盤1の高さ方向を仕切り板で引出形機器2の収容台数分(本例では3台分)の部屋に区切られて形成されている。また、各ユニット室1b〜1dの正面には、各々ハンドルレバー1eが取り付けられた扉1f,1g,1hが開閉自在に取付けられている。
Examples of the switchboard having such a configuration are shown in FIGS. 15 and 16. The side cross-sectional view of FIG. 15A and the back cross-sectional view of FIG. 15B are configuration examples of a distribution board in which a cable chamber is arranged on the back side in order to stack and mount a drawer type device in the board height direction. The front sectional view of FIG. 16A and the right sectional view of FIG. 16B are configuration examples of a switchboard in which the cable chamber is arranged on the side surface side.
First, the switchboard 1 shown in FIG. 15 has a vertically long rectangular parallelepiped shape, and the interior is partitioned by a partition plate into a front side and a back side, whereby a cable room 1a is provided on the back side and a plurality of unit rooms 1b are provided on the front side. , 1c, 1d are provided. Each of the unit rooms 1b to 1d is formed by dividing the height direction of the switchboard 1 into rooms for the number of drawer-type devices 2 accommodated (three in this example) by a partition plate. In addition, doors 1f, 1g, and 1h, to which handle levers 1e are attached, are attached to the front surfaces of the unit chambers 1b to 1d so as to be freely opened and closed.

各ユニット室1b〜1dに収容される引出形機器2は、室内奥側に固定されるクレードル2aと、このクレードル2aに着脱自在に取付けられ、台車6に載置されて室内を矢印Y1で示す正面及び奥行き方向に自在に移動できる開閉機器2bとから成る。但し、台車6にはレバー6aが着脱可能に取付けられており、このレバー6aを倒すと台車6が移動し、引出し状態へ移動可能な状態となり、レバー6aを起こすと台車6が挿入されて運転位置での固定状態となる。   A drawer-type device 2 accommodated in each of the unit chambers 1b to 1d is a cradle 2a fixed to the interior back side of the room, and is detachably attached to the cradle 2a. The drawer 2 is placed on the carriage 6 and the room is indicated by an arrow Y1. It comprises an opening / closing device 2b that can move freely in the front and depth directions. However, a lever 6a is detachably attached to the carriage 6, and when the lever 6a is tilted, the carriage 6 moves and becomes movable, and when the lever 6a is raised, the carriage 6 is inserted and operated. The position is fixed.

また、開閉機器2bの前面には保護カバー2cが取付けられ、この保護カバー2cの表面にはハンドル2dが固定されている。台車6のレバー6aを倒した後、そのハンドル2dを人が把持して開閉機器2bを正面方向に引き出し移動させるようになっている。
更に、開閉機器2bは、この内部に、上方に配置された高圧ヒューズ2b−1と、この高圧ヒューズ2b−1の下方に配置され、この高圧ヒューズ2b−1の一端が接続される開閉接点である真空バルブが収納された真空バルブ用絶縁ケース2b−2と、操作電源トランス2b−3とを備えて構成されている。
A protective cover 2c is attached to the front surface of the opening / closing device 2b, and a handle 2d is fixed to the surface of the protective cover 2c. After the lever 6a of the carriage 6 is tilted, the handle 2d is held by a person, and the opening / closing device 2b is pulled out and moved in the front direction.
Further, the switchgear 2b includes a high voltage fuse 2b-1 disposed above and a switch contact disposed below the high voltage fuse 2b-1 to which one end of the high voltage fuse 2b-1 is connected. A vacuum valve insulating case 2b-2 in which a certain vacuum valve is accommodated and an operation power supply transformer 2b-3 are provided.

この開閉機器2bがセットされるクレードル2aには、高圧ヒューズ2b−1の一端が導体を介して接続される電源側断路部2eと、真空バルブ用絶縁ケース2b−2内の真空バルブの一端が導体を介して接続される負荷側断路部2fとが、各々他端がケーブル室1aに突出して設けられている。
ケーブル室1aには、上部に三相の母線3が備えられ、この母線3に接続された分岐母線3aが配電盤1の底面に対して垂直状態に配置され、また、図示せぬ負荷装置のケーブル(負荷ケーブル)5が導かれている。その分岐母線3aには、電源側ブッシング4aを介して電源側断路部2eが接続され、負荷ケーブル5には、負荷側ブッシング4bを介して負荷側断路部2fが接続されている。
The cradle 2a in which the switchgear 2b is set includes a power supply side disconnect part 2e to which one end of the high voltage fuse 2b-1 is connected via a conductor, and one end of the vacuum valve in the vacuum valve insulating case 2b-2. A load-side disconnecting portion 2f connected via a conductor is provided with the other end protruding into the cable chamber 1a.
The cable chamber 1a is provided with a three-phase bus 3 at the top, the branch bus 3a connected to the bus 3 is arranged in a vertical state with respect to the bottom surface of the switchboard 1, and a cable of a load device (not shown) (Load cable) 5 is led. The branch bus 3a is connected to the power supply side disconnecting portion 2e via the power supply side bushing 4a, and the load cable 5 is connected to the load side disconnecting portion 2f via the load side bushing 4b.

そして、破線iで示すように、分岐母線3aからの電流が、電源側断路部2e、高圧ヒューズ2b−1、真空バルブ用絶縁ケース2b−2内の真空バルブ、負荷側断路部2fを通って負荷ケーブル5へ流れるようになっている。
高圧ヒューズ2b−1は、真空バルブの開閉で対応しきれない程の大きな短絡電流が流れた場合に電流経路を遮断するもので、通常流れる負荷電流は真空バルブの開閉で遮断するようになっている。
As indicated by the broken line i, the current from the branch bus 3a passes through the power supply side disconnecting part 2e, the high voltage fuse 2b-1, the vacuum valve in the vacuum valve insulating case 2b-2, and the load side disconnecting part 2f. It flows to the load cable 5.
The high-voltage fuse 2b-1 interrupts the current path when a large short-circuit current that cannot be handled by the opening and closing of the vacuum valve flows, and the load current that normally flows is interrupted by the opening and closing of the vacuum valve. Yes.

更に、電源側断路部2e及び負荷側断路部2fは、開閉機器2bがクレードル2aにセットされ、接続された際に開閉機器2bを分岐母線3a及び負荷ケーブル5と電気的に接続状態とし、また、開閉機器2bがクレードル2aから分離された際に開閉機器2bを分岐母線3a及び負荷ケーブル5と電気的に断路状態とする。
このような構成において、開閉機器2bを電源及び負荷から切り離す場合は、作業者が配電盤1のハンドルレバー1eを操作して扉1f〜1hを開け、台車6のレバー6aを差し込んで倒した後、ハンドル2dを把持して開閉機器2bを断路位置P1まで引き出す。この断路位置P1において扉1f〜1hが閉まるようにスペース2sが設けられている。
Further, the power-side disconnecting part 2e and the load-side disconnecting part 2f are electrically connected to the branch bus 3a and the load cable 5 when the switchgear 2b is set and connected to the cradle 2a. When the switchgear 2b is separated from the cradle 2a, the switchgear 2b is electrically disconnected from the branch bus 3a and the load cable 5.
In such a configuration, when the switchgear 2b is disconnected from the power source and the load, the operator operates the handle lever 1e of the switchboard 1 to open the doors 1f to 1h, inserts the lever 6a of the carriage 6 and falls down. By grasping the handle 2d, the switching device 2b is pulled out to the disconnection position P1. A space 2s is provided so that the doors 1f to 1h are closed at the disconnection position P1.

この状態から開閉機器2bを電源及び負荷に接続する場合は、扉1f〜1hを開いた後、レバー6aを引き起こし、ハンドル2dを把持して開閉機器2bを奥行き方向に移動させてクレードル2aにセットする。そして、レバー6aを外した後、扉1f〜1hを閉じる。
次に、図16に示す配電盤11は、縦長の直方体形状を成し、この内部が正面から見て縦に仕切り板で区切られ、この右側にケーブル室11a、左側に高さ方向に3つのユニット室11b,11c,11dが設けられている。また、配電盤11の正面には盤全体の扉11fが設けられている。
When connecting the switchgear 2b to the power source and load from this state, after opening the doors 1f to 1h, the lever 6a is raised, the handle 2d is gripped, and the switchgear 2b is moved in the depth direction and set in the cradle 2a. To do. And after removing the lever 6a, the doors 1f-1h are closed.
Next, the switchboard 11 shown in FIG. 16 has a vertically long rectangular parallelepiped shape, and the inside thereof is vertically partitioned by a partition plate when viewed from the front, the cable chamber 11a on the right side, and three units in the height direction on the left side. Chambers 11b, 11c and 11d are provided. In addition, a door 11f for the entire panel is provided in front of the switchboard 11.

このような配電盤11には、図15に示した配電盤1と同様に各ユニット室11b〜11dに引出形機器2が収容され、この引出形機器2がケーブル室11aの分岐母線3a及び負荷ケーブル5に配線接続されている。但し、このように配電盤11の側面にケーブル室11aを配置する場合は、負荷側の導体をケーブル端子15の位置まで配線する必要がある。
この種の従来の配電盤として、例えば特許文献1に記載のものがある。
In such a switchboard 11, similarly to the switchboard 1 shown in FIG. 15, each of the unit chambers 11 b to 11 d accommodates a drawer-type device 2, and this drawer-type device 2 is connected to the branch bus 3 a and the load cable 5 of the cable chamber 11 a. Wired to However, when the cable chamber 11 a is arranged on the side surface of the switchboard 11 as described above, it is necessary to wire the load-side conductor to the position of the cable terminal 15.
As this type of conventional switchboard, for example, there is one described in Patent Document 1.

特公昭58−79410号公報Japanese Patent Publication No.58-79410

上述した従来の引出形機器は、高圧ヒューズと、電磁操作コイルにより開閉駆動される真空バルブとを組み合わせた開閉機器(コンビネーションスタータ)を用いたものであり、水平配置した高圧ヒューズを垂直配置した真空バルブと接続した構成であるため、開閉機器自体の高さが高くなってしまう。このため、引出形機器を配電盤内に多段積みする場合、少数の引出形機器しか積めないという問題がある。   The above-mentioned conventional drawer type equipment uses an open / close device (combination starter) that combines a high voltage fuse and a vacuum valve that is driven to open and close by an electromagnetic operation coil. Since it is the structure connected with the valve | bulb, the height of switchgear itself will become high. For this reason, when drawing-out type equipment is stacked in a distribution board, there is a problem that only a small number of drawing-out type equipment can be loaded.

但し、引出形機器を配電盤内に極力多く積む場合は、配電盤のサイズを大きくすればよいが、高くすると操作がやりにくくなったり、踏台などが必要になったりする。また、配電盤の小型化推奨の要望からも外れることになる。
また、引出形機器を多段積みした場合、配電盤高さ方向のスペースを使うためケーブル処理を行うための高さが確保できず、上述したようにケーブル室を盤側面や背面に配置することになるので、導体などで適当なケーブル接続端子位置まで配線する必要が生じる。このため配線作業が困難となり、ケーブル配線スペースのために配電盤が大規模になるという問題がある。
However, when as many drawer-type devices as possible are stacked in the switchboard, the size of the switchboard may be increased. However, if the drawer type equipment is increased, operation becomes difficult or a step board is required. In addition, the demand for miniaturization of the switchboard is not met.
In addition, when the drawer type equipment is stacked in multiple stages, the height for performing cable processing cannot be ensured because the space in the height direction of the switchboard is used, and the cable chamber is arranged on the side or back of the panel as described above. Therefore, it is necessary to wire to an appropriate cable connection terminal position with a conductor or the like. For this reason, wiring work becomes difficult, and there is a problem that the switchboard becomes large due to the cable wiring space.

本発明は、このような課題に鑑みてなされたものであり、引出形機器(開閉機器)を小型化することができ、これによって配電盤内に極力多くの引出形機器を積むことができ、またケーブル配線作業の簡便さの阻害がなく配線スペースを狭小として配電盤全体を小型化することができる配電盤を提供することを目的としている。   The present invention has been made in view of such a problem, and can reduce the size of the drawer-type device (opening / closing device), and thereby can load as many drawer-type devices as possible in the switchboard. An object of the present invention is to provide a switchboard that can reduce the size of the entire switchboard by reducing the wiring space without obstructing the simplicity of cable wiring work.

上記目的を達成するために、本発明の請求項1による配電盤は、盤内に配設された三相の母線と負荷ケーブルとの間に接続され、所定以上の電流が流れた際に電路を遮断する引出形機器を多段積みに収容する配電盤において、盤内の裏面側にケーブル室を配置し、該ケーブル室内における左右の側面に上下方向に互い違いで且つ平面から見て横一線に複数の零相変流器を配置し、前記ケーブル室内に底面または上面を貫通して引き込まれた複数の負荷ケーブルを、前記零相変流器に個別に貫通させるように、複数の支持部材によって個別に支持することを特徴とする。
この構成によれば、引き込まれた複数の負荷ケーブルを配電盤内の裏側に配置したケーブル室内における左右の側面に上下方向に互い違いで且つ平面から見て横一線に配置した複数の零相変流器を貫通させる構造としたので、ケーブル室を配電盤の前後方向に薄くすることができ、その分、配電盤を前後方向に薄型とすることができる。
In order to achieve the above object, a distribution board according to claim 1 of the present invention is connected between a three-phase bus arranged in the board and a load cable, and when an electric current exceeding a predetermined value flows, In a switchboard that accommodates drawer-type devices to be cut off in a multi-stage stack, a cable chamber is arranged on the back side of the panel, and a plurality of zeros are arranged on the left and right sides in the cable chamber in a staggered vertical direction and in a horizontal line when viewed from the plane. A phase current transformer is arranged, and a plurality of load cables drawn through the bottom or top surface into the cable chamber are individually supported by a plurality of support members so as to individually penetrate the zero-phase current transformer. It is characterized by doing.
According to this arrangement, a plurality of load cables drawn, a plurality of zero-phase arranged laterally clear distinction to the side surface of the right and left in place the cable compartment on the back surface side when viewed from alternating a and flat in the vertical direction in the switchboard Since the current transformer is configured to penetrate , the cable chamber can be thinned in the front-rear direction of the switchboard, and accordingly, the switchboard can be thinned in the front-rear direction.

以上説明したように本発明によれば、短絡電流遮断機能を有する引出形機器を小型化することができ、これによって配電盤内に極力多くの引出形機器を積むことができ、またケーブル配線作業の簡便さの阻害がなく配線スペースを狭小として配電盤全体を小型化することができるという効果がある。   As described above, according to the present invention, it is possible to reduce the size of a drawer-type device having a short-circuit current interrupting function, and thereby it is possible to load as many drawer-type devices as possible in a switchboard, and to perform cable wiring work. There is an effect that there is no hindrance to simplicity, and the entire distribution panel can be reduced in size by reducing the wiring space.

本発明の第1の実施の形態に係る引出形機器を適用した配電盤の構成を示す側断面図である。It is a sectional side view which shows the structure of the switchboard which applied the drawer type apparatus which concerns on the 1st Embodiment of this invention. 上記配電盤の構成を示す正面図である。It is a front view which shows the structure of the said switchboard. (a)上記配電盤の構成を示す裏断面図であり、(b)は(a)の下面図である。(A) It is a back sectional view which shows the structure of the said switchboard, (b) is a bottom view of (a). 図1に示す配電盤のA1−A2線の切断面の平面図である。It is a top view of the cut surface of the A1-A2 line | wire of the switchboard shown in FIG. 上記引出形機器の側面断面図である。It is side surface sectional drawing of the said drawer-type apparatus. 上記引出形機器の平面図である。It is a top view of the said drawer type apparatus. 図5に示す引出形機器のB1−B2線の切断面の平面図である。It is a top view of the cut surface of the B1-B2 line | wire of the drawer | drawing-out type apparatus shown in FIG. 上記引出形機器を適用したケーブル室を下側に設けた配電盤の構成を示す側断面図である。It is a sectional side view which shows the structure of the switchboard which provided the cable room to which the said drawer type apparatus was applied in the lower side. (a)は図8に示す配電盤の裏断面図、(b)は(a)のケーブル引き込み配置状態を示す平面図である。(A) is a back sectional view of the switchboard shown in FIG. 8, (b) is a plan view showing the cable lead-in arrangement state of (a). 本発明の第2の実施の形態に係る配電盤の構成を示す正面図である。It is a front view which shows the structure of the switchboard which concerns on the 2nd Embodiment of this invention. 第2の実施の形態の配電盤の構成を示す側断面図である。It is a sectional side view which shows the structure of the switchboard of 2nd Embodiment. 第2の実施の形態の配電盤の構成を示す裏断面図である。It is a back sectional view showing the composition of the switchboard of a 2nd embodiment. (a)は図11のB1−B2線の切断面の平面図、(b)は(a)の引出形機器収納ユニット室の仕切り板部分の平面図である。(A) is a top view of the cut surface of the B1-B2 line | wire of FIG. 11, (b) is a top view of the partition plate part of the drawer-type apparatus storage unit chamber of (a). 第2の実施の形態の配電盤における空気の流れを示す正面図である。It is a front view which shows the flow of the air in the switchboard of 2nd Embodiment. 従来の背面側にケーブル室を配置した配電盤の構成を示し、(a)は側断面図、(b)は背断面図である。The structure of the switchboard which has arrange | positioned the cable room in the conventional back side is shown, (a) is a sectional side view, (b) is a back sectional view. 従来の側面側にケーブル室を配置した配電盤の構成を示し、(a)は正断面図、(b)は右側断面図である。The structure of the switchboard which arrange | positioned the cable room in the conventional side surface is shown, (a) is a front sectional view, (b) is a right sectional view.

以下、本発明の実施の形態を図面を参照して説明する。但し、本明細書中の全図において相互に対応する部分には同一符号を付し、重複部分においては後述での説明を適時省略する。
(第1の実施の形態)
図1は本発明の第1の実施の形態に係る引出形機器を適用した配電盤の構成を示す側断面図、図2は同配電盤の構成を示す正面図、図3(a)は同配電盤の構成を示す裏断面図、同図(b)は(a)の下面図、図4は図1のA1−A2線の切断面の平面図である。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, parts corresponding to each other in all the drawings in this specification are denoted by the same reference numerals, and description of the overlapping parts will be omitted as appropriate.
(First embodiment)
FIG. 1 is a side sectional view showing the configuration of a distribution board to which the drawer type device according to the first embodiment of the present invention is applied, FIG. 2 is a front view showing the configuration of the distribution board, and FIG. FIG. 4B is a bottom view of FIG. 4A, and FIG. 4 is a plan view of a cut surface taken along line A1-A2 of FIG.

この図1に示す配電盤21及びこの配電盤21内に多段積み状態に収納された引出形機器22の主な特徴は、引出形機器22の高さを低くして薄型化することによって、配電盤21内に従来よりも多くの引出形機器22を積んで収納できるようにした点にある。
但し、本実施の形態では、引出形機器22を5段積みで図示しているが、これに限定されることなく6段積み以上でも可能であり、言うまでも無く4段積み以下でも可能である。また、図1の配電盤21は、図に向かって右側が正面側、左側が裏面側である。なお、各引出形機器22は、図2に示すように、1段目から5段目まで順に符号22−1,22−2,22−3,22−4,22−5を付して必要に応じて区別する。
The main feature of the switchboard 21 shown in FIG. 1 and the drawer-type device 22 housed in a multi-stage stack in the switchboard 21 is that the drawer-type device 22 is made thin by reducing the height of the drawer-type device 22. In addition, a larger number of drawer-type devices 22 than in the past can be stacked and stored.
However, in the present embodiment, the drawer-type equipment 22 is illustrated as being stacked in five stages, but is not limited to this and can be stacked in six stages or more, and needless to say, can be stacked in four stages or less. is there. Moreover, as for the switchboard 21 of FIG. 1, the right side is a front side and the left side is a back side toward the figure. In addition, as shown in FIG. 2, each drawer-type device 22 is attached with reference numerals 22-1, 22-2, 22-3, 22-4, 22-5 in order from the first stage to the fifth stage. Distinguish according to.

配電盤21は、縦形の直方体形状を成し、最上部に三相の母線24が配置され、この母線24に配電盤21の底面に対して垂直に配置された垂直母線24aが各相毎に接続されている。
配電盤21内の垂直母線24aの正面側には、各々の引出形機器22のユニット室21aが縦に設けられている。各ユニット室21aは、引出形機器22が盤正面側から抜き差し自在に収納できるフレーム構造となっており、本図では各々に引出形機器22が収納されている。
The switchboard 21 has a vertical rectangular parallelepiped shape. A three-phase bus 24 is disposed at the top, and a vertical bus 24a disposed perpendicular to the bottom surface of the switchboard 21 is connected to the bus 24 for each phase. ing.
On the front side of the vertical bus bar 24 a in the switchboard 21, unit rooms 21 a of the respective drawer-type devices 22 are provided vertically. Each unit chamber 21a has a frame structure in which the drawer-type device 22 can be inserted and removed from the front side of the panel. In this figure, each drawer-type device 22 is stored.

各引出形機器22の裏面側に設けられた負荷側端子22hには、負荷ケーブル23が接続されている。この負荷ケーブル23の接続状態を図3及び図4に示す。但し、図3においては引出形機器22本体は表しておらず、図4には3段目の引出形機器22−3のみを表した。
これらの図に示すように、1段目の引出形機器22−1の三相の負荷側端子22h−1に負荷ケーブル23−1の三相の電線が接続され、2段目の引出形機器22−2の三相の負荷側端子22h−2に負荷ケーブル23−2の三相の電線が接続され、3段目の引出形機器22−3の三相の負荷側端子22h−3に負荷ケーブル23−3の三相の電線が接続され、4段目の引出形機器22−4の三相の負荷側端子22h−4に負荷ケーブル23−4の三相の電線が接続され、5段目の引出形機器22−5の三相の負荷側端子22h−5に負荷ケーブル23−5の三相の電線が接続されて成る。
A load cable 23 is connected to a load side terminal 22 h provided on the back side of each drawer-type device 22. The connection state of the load cable 23 is shown in FIGS. However, FIG. 3 does not show the drawer-type device 22 main body, and FIG. 4 shows only the third-stage drawer-type device 22-3.
As shown in these figures, the three-phase electric wire of the load cable 23-1 is connected to the three-phase load side terminal 22h-1 of the first-stage drawer-type device 22-1 and the second-stage drawer-type device. The two-phase load-side terminal 22h-2 of the 22-2 is connected to the three-phase electric wire of the load cable 23-2, and the load is applied to the three-phase load-side terminal 22h-3 of the third-stage drawer-type device 22-3. The three-phase electric wire of the cable 23-3 is connected, and the three-phase electric wire of the load cable 23-4 is connected to the three-phase load side terminal 22h-4 of the fourth-stage drawer-type device 22-4. The three-phase electric wire of the load cable 23-5 is connected to the three-phase load side terminal 22h-5 of the eye-drawing type device 22-5.

各負荷ケーブル23−1〜23−5は、配電盤21の裏面の盤幅方向に所定間隔で一列に配設されるように、各負荷ケーブル23−1〜23−5を通す貫通型の零相変流器(ZCT)25−1〜25−5を盤壁面に上下互い違いで且つ横一線に固定し、これらZCT25−1〜25−5の上方に、各負荷ケーブル23−1〜23−5の三相電線を固定するためのケーブルブラケット26−1〜26−5を配置固定した。
これによって、各負荷ケーブル23−1〜23−5は、配電盤21内の両側裏面に沿った面状スペースに配設された状態となるので、ケーブル室21cは配電盤21の前後方向に薄くなっている。
Each of the load cables 23-1 to 23-5 is a through-type zero-phase through which the load cables 23-1 to 23-5 are passed so that the load cables 23-1 to 23-5 are arranged in a line at predetermined intervals in the panel width direction on the back surface of the switchboard 21. Current transformers (ZCT) 25-1 to 25-5 are fixed to the wall of the panel in a staggered manner and in a horizontal line, and above these ZCTs 25-1 to 25-5, the load cables 23-1 to 23-5 Cable brackets 26-1 to 26-5 for fixing the three-phase electric wires were arranged and fixed.
As a result, the load cables 23-1 to 23-5 are arranged in a planar space along the backs on both sides in the switchboard 21, so that the cable chamber 21 c is thinned in the front-rear direction of the switchboard 21. Yes.

次に、引出形機器22の詳細構成を図5〜図7を更に参照して説明する。図5は引出形機器22の断面図、図6は図5の平面図、図7は図5のB1−B2線の切断面の平面図である。
これら図5〜図7に示すように、引出形機器22は、水平状態に配置した高圧ヒューズ22aと、電磁操作コイル22bにより開閉駆動される横型の真空バルブ22cとを組み合わせて成る開閉機器(コンビネーションスタータ)22dを備え、更に垂直母線24aに高圧ヒューズ22aを電気的に着脱自在に接続する電源側断路部22eと、負荷側端子22hに真空バルブ22cを電気的に着脱自在に接続する負荷側断路部22fとを開閉機器22dに備え、その負荷側端子22h及び垂直母線24aが固定される絶縁ブッシング22gを備えて構成されている。
Next, the detailed configuration of the drawer-type device 22 will be described with further reference to FIGS. 5 is a sectional view of the drawer-type device 22, FIG. 6 is a plan view of FIG. 5, and FIG. 7 is a plan view of a cut surface taken along line B1-B2 of FIG.
As shown in FIG. 5 to FIG. 7, the drawer-type device 22 is an open / close device (combination) that is a combination of a high-voltage fuse 22 a arranged in a horizontal state and a horizontal vacuum valve 22 c driven to open and close by an electromagnetic operation coil 22 b. A starter) 22d, and a power supply side disconnect portion 22e that electrically connects the high-voltage fuse 22a to the vertical bus 24a, and a load side disconnect that connects the vacuum valve 22c to the load side terminal 22h. The opening / closing device 22d is provided with a portion 22f, and is provided with an insulating bushing 22g to which the load side terminal 22h and the vertical bus 24a are fixed.

この構成において、図5に破線矢印Y1で示すように、垂直母線24aを流れる電流が、電源側断路部22e、高圧ヒューズ22a、真空バルブ22cを通って負荷側端子22hへ流れるようになっている。
真空バルブ22cと電磁操作コイル22bは、各相毎に1対1で組合されている。高圧ヒューズ22aと真空バルブ22cは、高圧ヒューズ22aを上側、真空バルブ22cを下側に絶縁状態に区画して収容した一体構造の丈夫な第1の絶縁フレーム22iによって区画されている。また、第1の絶縁フレーム22iの上側では、各相毎に高圧ヒューズ22aが側壁によって区画されている。
In this configuration, as indicated by the broken line arrow Y1 in FIG. 5, the current flowing through the vertical bus 24a flows to the load side terminal 22h through the power supply side disconnecting portion 22e, the high voltage fuse 22a, and the vacuum valve 22c. .
The vacuum valve 22c and the electromagnetic operation coil 22b are combined on a one-to-one basis for each phase. The high-pressure fuse 22a and the vacuum valve 22c are defined by a strong first insulating frame 22i having an integral structure in which the high-pressure fuse 22a is stored in an upper side and the vacuum valve 22c is stored in an insulating state. Further, on the upper side of the first insulating frame 22i, the high-voltage fuse 22a is partitioned by a side wall for each phase.

更に、第1の絶縁フレーム22iの上側に両側相の高圧ヒューズ22aが配置された区画部分には、操作電源トランス用ヒューズ22jが水平状態に配置され、この操作電源トランス用ヒューズ22jが、第1の絶縁フレーム22iの下側に配置された操作電源トランス22kに、該フレーム22iを上下に貫通する導体によって接続されている。
また、操作電源トランス22kは、底面に複数のキャリアが取付けられて移動自在な移動台車22mの底面の中央部分に配置されており、その操作電源トランス22kの両側に変流器22nが配置されている。また、移動台車22mは、底面の一辺から立上る垂直面を備えた側面L字形状を成し、その垂直面に操作機器部22pが固定され、配電盤21の正面側から人が所定操作を行えるようになっている。
Further, an operating power transformer fuse 22j is horizontally disposed in a partition portion where the high-voltage fuses 22a on both sides are arranged on the upper side of the first insulating frame 22i. The operation power transformer 22k disposed on the lower side of the insulating frame 22i is connected by a conductor that vertically penetrates the frame 22i.
The operation power transformer 22k is disposed at the center of the bottom surface of the movable carriage 22m that is movable with a plurality of carriers attached to the bottom surface, and current transformers 22n are disposed on both sides of the operation power transformer 22k. Yes. Further, the movable carriage 22m has a side surface L shape with a vertical surface rising from one side of the bottom surface, and the operation device unit 22p is fixed to the vertical surface, and a person can perform a predetermined operation from the front side of the switchboard 21. It is like that.

電源側断路部22eは、図6に示すように、先端部が垂直母線24aを着脱自在に把持可能なクリップ構造となっている。負荷側断路部22fは、細長い導電板で先端部が負荷側端子22hを着脱自在に把持可能なクリップ構造となっている。
また、電源側断路部22eと負荷側断路部22fは、図7に示すように、それらの配電盤前後方向Y11に沿った中心線C1とC2の間隔L1が、各相の垂直母線24aと各負荷側端子22hとを絶縁状態に並べて配置可能な長さで、相間方向にずらされて配置されている。このような配置によって、電源側断路部22eに接続される各相の垂直母線24aを垂直状態に一直線で配置可能とした。
As shown in FIG. 6, the power supply side disconnecting part 22 e has a clip structure in which the tip part can detachably hold the vertical bus 24 a. The load-side disconnecting portion 22f has a clip structure in which the tip portion is a slender conductive plate and the load-side terminal 22h can be detachably gripped.
Further, as shown in FIG. 7, the power-side disconnecting part 22e and the load-side disconnecting part 22f are such that the distance L1 between the center lines C1 and C2 along the switchboard front-rear direction Y11 is equal to the vertical bus 24a of each phase and each load. The side terminals 22h are arranged to be arranged in an insulated state and are shifted in the interphase direction. With this arrangement, the vertical buses 24a of the respective phases connected to the power supply side disconnecting part 22e can be arranged in a straight line in a vertical state.

次に、垂直母線24a及び負荷側端子22hを固定する絶縁ブッシング22gについて説明する。
絶縁ブッシング22gは、垂直母線24aと負荷側端子22hを絶縁状態に支持固定する構造と、開閉機器22dがセットされることにより電源側断路部22eが垂直母線24aにクリップ接続され、負荷側断路部22fが負荷側端子22hにクリップ接続された際に、電源側断路部22eと負荷側断路部22fとを仕切って絶縁区画化する構造の双方を備えた第2の絶縁フレーム22qを構成している。
Next, the insulating bushing 22g for fixing the vertical bus 24a and the load side terminal 22h will be described.
The insulating bushing 22g has a structure in which the vertical bus 24a and the load side terminal 22h are supported and fixed in an insulated state, and the power supply side disconnecting portion 22e is clipped to the vertical bus 24a by setting the switching device 22d. When 22f is clip-connected to the load-side terminal 22h, the second insulating frame 22q having both the structure of partitioning the power-side disconnecting portion 22e and the load-side disconnecting portion 22f to form an insulating partition is configured. .

つまり、この第2の絶縁フレーム22qには、開閉機器22dのセット時に第1の絶縁フレーム22iが組み合わされるようになっている。また、第2の絶縁フレーム22qは、ユニット室21aなど配電盤21内に固定されている。
この第2の絶縁フレーム22qの詳細構造を説明すると、図7に示すように、各垂直母線24aを垂直状態に挿通するための凹部22rを備え、図6に示すように、凹部22rの上方に垂直母線24aと嵌合する留め金具22tを設け、この留め金具22tを固定座22uにネジ固定することで垂直母線24aをユニット室内から固定できるようになっている。
That is, the first insulating frame 22i is combined with the second insulating frame 22q when the opening / closing device 22d is set. The second insulating frame 22q is fixed in the switchboard 21 such as the unit chamber 21a.
The detailed structure of the second insulating frame 22q will be described. As shown in FIG. 7, the second insulating frame 22q is provided with a recess 22r for inserting each vertical bus 24a in a vertical state, and as shown in FIG. 6, above the recess 22r. A fastener 22t that fits with the vertical bus bar 24a is provided, and the vertical bus 24a can be fixed from inside the unit chamber by screwing the fastener 22t to the fixing seat 22u.

また、図7に示すように、垂直母線24aを挿通支持する凹部22rの開口を絶縁物製の蓋部22vで蓋をすれば、母線を絶縁区画化でき安全性が高まる。
このような、本実施の形態の引出形機器22及びそれを用いた配電盤21によれば次のような効果を得ることができる。
Further, as shown in FIG. 7, if the opening of the recess 22r for inserting and supporting the vertical bus bar 24a is covered with a lid portion 22v made of an insulating material, the bus bar can be insulated and the safety is improved.
According to the drawer-type device 22 and the switchboard 21 using the same according to the present embodiment, the following effects can be obtained.

(1)引出形機器22をで、真空バルブ22cを横向きに配置することによって高さを従来よりも低くした。つまり、従来1つの電磁操作コイルで三相分の真空バルブを操作させるために縦型となっていた真空バルブを、各相毎に1対1で真空バルブ22cに電磁操作コイル22bを組合せて駆動させることによって、真空バルブ22cを横向きに配置できるようにした。
このように引出形機器22の高さを低くして薄型化したので、配電盤21内に従来よりも多くの引出形機器22を積んで収納できるようになる。言い換えれば、引出形機器22を従来と同じ段数積むのであれば、配電盤21を小型化することができる。
(1) The height of the drawer-type device 22 is made lower than before by arranging the vacuum valve 22c sideways. That is, a conventional vacuum valve for operating a three-phase vacuum valve with a single electromagnetic operation coil is driven by a combination of the electromagnetic operation coil 22b and the vacuum valve 22c on a one-to-one basis for each phase. By doing so, the vacuum valve 22c can be arranged sideways.
Since the drawer-type device 22 is made thin by reducing the height in this way, more drawer-type devices 22 can be stacked and stored in the switchboard 21 than in the past. In other words, if the number of drawer-type devices 22 is the same as that of the conventional one, the switchboard 21 can be downsized.

(2)引出形機器22の開閉機器22dに、高圧ヒューズ22aを上側、真空バルブ22cを下側に相ごとに区画して収容した一体構造の第1の絶縁フレーム22iを用いたので、高圧ヒューズ22aが万一破損した場合でも、この破損によって真空バルブ22c等の他の部品を破壊するといったことを防止している。更には、区画されているので絶縁的にも空間距離を短縮し、コンパクトにできる効果がある。   (2) Since the opening / closing device 22d of the drawer-type device 22 uses the first insulating frame 22i having an integral structure in which the high-voltage fuse 22a is partitioned on the upper side and the vacuum valve 22c is partitioned on the phase-by-phase basis. Even if 22a is damaged, it is prevented that other parts such as the vacuum valve 22c are destroyed due to this damage. Furthermore, since it is partitioned, the space distance can be shortened in an insulating manner, and there is an effect that it can be made compact.

(3)引出形機器22の電源側断路部22eと負荷側断路部22fを、図7に示したように、それらの中心線C1とC2の間隔L1が、各相の垂直母線24aと負荷側端子22hとを絶縁状態に並べて配置可能な長さで、相間方向にずらして配置した。この配置によって、各電源側断路部22eに接続される3本の垂直母線24aを配電盤21内に垂直状態に一直線で配置することが可能となる。従来は、電源側断路部と負荷側端子とが上下一列に配置されていたので、垂直母線を一直線のままで配置することができず、負荷側端子の箇所で垂直母線を曲げるなどの方法で干渉を避けていた。   (3) As shown in FIG. 7, the distance L1 between the center lines C1 and C2 of the power source side disconnecting part 22e and the load side disconnecting part 22f of the drawer-type device 22 is different from the vertical bus 24a of each phase and the load side. The terminals 22h are arranged in an insulated state and arranged so as to be shifted in the interphase direction. With this arrangement, the three vertical buses 24a connected to the power supply side disconnecting portions 22e can be arranged in a straight line in the distribution board 21 in a straight line. Conventionally, since the power supply side disconnection part and the load side terminal are arranged in a vertical line, the vertical bus cannot be arranged in a straight line, and the vertical bus is bent at the load side terminal. I avoided interference.

(4)各相の垂直母線24aを凹部22r及び留め金具22tによって垂直状態に一直線のままで支持固定すると共に、負荷側端子22hを垂直母線24aと絶縁状態に支持固定する構造と、可動可能な開閉機器22dがセットされた際に電源側断路部22eと負荷側断路部22fとが仕切られて絶縁状態で垂直母線24aと負荷側端子22hに接続される構造の第2の絶縁フレーム22qを用いた。
つまり、垂直母線24aと負荷側端子22hが絶縁状態で区画化、支持固定されているので、安全性を確保することができる。更に、引出形機器22においては、高圧の場合、負荷側断路部と電源側断路部とを絶縁区画しなければならない場合の規格もあるが、この場合でも容易に対応することができる。
(4) A structure in which the vertical bus 24a of each phase is supported and fixed in a straight line by the recess 22r and the fastener 22t, and the load side terminal 22h is supported and fixed in an insulated state with the vertical bus 24a, and is movable. When the switchgear 22d is set, the second insulating frame 22q having a structure in which the power-side disconnecting portion 22e and the load-side disconnecting portion 22f are partitioned and connected to the vertical bus 24a and the load-side terminal 22h in an insulated state is used. It was.
That is, since the vertical bus 24a and the load side terminal 22h are partitioned and supported and fixed in an insulated state, safety can be ensured. Furthermore, in the drawer type equipment 22, there is a standard in the case where the load side disconnection part and the power supply side disconnection part must be insulated in the case of high voltage, but this case can be easily dealt with.

また、第2の絶縁フレーム22qに垂直母線24aを垂直状態に一直線のままで支持固定する凹部22r及び留め金具22tを設け、各垂直母線24aを垂直に配置し、これらの垂直母線24aに絶縁ブッシング22gである第2の絶縁フレーム22qに各垂直母線24aを固定することができる。このため。従来、クレードルの構成部品を個々に組合せて母線を固定していたことに比べ、第2の絶縁フレーム22qの組合せで垂直母線24aを固定できるので作業性が良くなり、また増設時の対応もクレードルなどの大きな構造物を設置する必要がなくなり、作業がやり易くなる利点がある。   Further, the second insulating frame 22q is provided with a recess 22r and a fastener 22t for supporting and fixing the vertical bus 24a in a straight line in a vertical state, and each vertical bus 24a is arranged vertically, and an insulating bushing is provided on these vertical buses 24a. Each vertical bus 24a can be fixed to the second insulating frame 22q which is 22g. For this reason. Compared to the conventional combination of the cradle components and fixing the busbar, the vertical busbar 24a can be fixed by the combination of the second insulating frame 22q. There is an advantage that it is not necessary to install a large structure such as, and the work is easy to do.

(5)ケーブル室21cを、負荷装置から配電盤21に引き込まれてきた各負荷ケーブル23−1〜23−5を配電盤21内の両側裏面に沿った面状スペースに配設する構造としたので、ケーブル室21cを配電盤21の前後方向に薄くすることができ、その分、配電盤21を前後方向に薄型とすることができる。
この配電盤21の薄型に関しては、配電盤を図8及び図9に示す構成とすれば更に薄型とすることができる。図8は配電盤31の側断面図、図9(a)は裏断面図、(b)はケーブル引き込み配置状態を示す平面図である。
(5) Since the cable chamber 21c has a structure in which the load cables 23-1 to 23-5 that have been drawn into the switchboard 21 from the load device are arranged in a planar space along the back surfaces on both sides in the switchboard 21, The cable chamber 21c can be thinned in the front-rear direction of the switchboard 21, and accordingly, the switchboard 21 can be thinned in the front-rear direction.
Regarding the thinness of the switchboard 21, if the switchboard is configured as shown in FIGS. 8 and 9, it can be made thinner. 8 is a side sectional view of the switchboard 31, FIG. 9A is a rear sectional view, and FIG. 8B is a plan view showing a cable lead-in arrangement state.

この配電盤31は、ケーブル室31cを盤下側に設けたタイプのものであり、ケーブル室31cの上に引出形機器22が積層されている。その引出形機器22は、上述したと同様のものであるが、次に説明する点が異なる。即ち、引出形機器22は、図5に破線で示すように負荷側端子22hを、水平及び垂直の何れの状態にもボルト・ナットで自在に取付が可変可能となっているので、配電盤31に収納する際は垂直状態に取付ける。   This switchboard 31 is of a type in which a cable chamber 31c is provided on the lower side of the panel, and a drawer-type device 22 is laminated on the cable chamber 31c. The drawer-type device 22 is the same as described above, but differs in the points described below. That is, in the drawer-type device 22, as shown by the broken line in FIG. 5, the load-side terminal 22h can be freely mounted with bolts and nuts in both horizontal and vertical states. When storing, install it vertically.

そして、図8に示すように、各段の各相の負荷側端子22h−1〜22h−3の下端に配線を接続し、この配線を図9にも示すようにケーブル室31cの上側に配設された各段の各相毎のケーブル接続端子32−1〜32−3に接続する。 つまり、引出形機器22は、負荷側端子22hが水平及び垂直の何れの状態にもボルト・ナットで自在に取付けが可変可能となっているので、垂直状態に取付け、負荷ケーブル配線を下方から行うようにすれば、ケーブル室31cが下側に設けられたタイプの配電盤31にも容易に対応することができ、機器の共用化が図れる利点がある。   Then, as shown in FIG. 8, wiring is connected to the lower ends of the load side terminals 22h-1 to 22h-3 of each phase of each stage, and this wiring is arranged above the cable chamber 31c as shown in FIG. It connects to the cable connection terminal 32-1 to 32-3 for every phase of each provided stage. In other words, the drawer-type device 22 can be mounted freely with bolts and nuts in either the horizontal or vertical state of the load side terminal 22h, so it is mounted in the vertical state and the load cable wiring is performed from below. If it does in this way, it can respond easily also to the switchboard 31 of the type in which the cable room 31c was provided in the lower side, and there exists an advantage which can attain common use of an apparatus.

(第2の実施の形態)
図10は本発明の第2の実施の形態に係る配電盤の構成を示す正面図、図11は同配電盤の構成を示す側断面図、図12は同配電盤の構成を示す裏断面図、図13(a)は図11のB1−B2線の切断面の平面図、(b)は(a)の引出形機器収納ユニット室の仕切り板部分の平面図である。
本実施の形態の配電盤41の特徴は、図12及び図13(b)に示すように、配電盤41の各ユニット室の仕切り板41aの両側に配線通路並びに換気口を兼ねる貫通口41cを設けると共に、図10及び図11に示すように、正面に空気の自然換気を行うための換気口41e,41g,41i,41jを設け、配電盤41内の換気を良くした点にある。
(Second Embodiment)
10 is a front view showing the configuration of the switchboard according to the second embodiment of the present invention, FIG. 11 is a side sectional view showing the configuration of the switchboard, FIG. 12 is a rear sectional view showing the configuration of the switchboard, FIG. (A) is a top view of the cut surface of the B1-B2 line | wire of FIG. 11, (b) is a top view of the partition plate part of the drawer-type apparatus storage unit chamber of (a).
As shown in FIGS. 12 and 13 (b), the switchboard 41 of the present embodiment is characterized in that through-holes 41c that also serve as wiring passages and ventilation openings are provided on both sides of the partition plate 41a of each unit chamber of the switchboard 41. As shown in FIGS. 10 and 11, ventilation ports 41e, 41g, 41i, and 41j for performing natural ventilation of air are provided on the front surface to improve ventilation in the switchboard 41.

詳細には、当該配電盤41を正面から見た状態において、引出形機器22−1〜22−3が一台ずつ載置される各ユニット室の仕切り板41a−1〜41a−3と、最上部のユニット室と母線室との仕切り板41bの各々の両側部分に、各々が上下で重なる長方形状の貫通口41cを設けた。   In detail, in the state which looked at the said switchboard 41 from the front, the partition plates 41a-1 to 41a-3 of each unit chamber in which the drawer-type devices 22-1 to 22-3 are placed one by one, and the uppermost part A rectangular through-hole 41c is provided on both sides of each of the partition plates 41b between the unit chamber and the bus bar chamber.

また、各ユニット室の扉(以降、ユニット室扉と称す)41d−1〜41d−3の下側部分に、横方向に細長い長方形状の貫通口に金属網を張った換気口41eを設け、ユニット室下方のケーブル室31cの扉(以降、ケーブル室扉と称す)41fに比較的面積の大きい長方形状の貫通口に金属網を張った換気口41gを設け、母線室の扉(以降、母線室扉と称す)41hに略全面に長方形状の貫通口に金属網を張った換気口41iを設け、更に、各ユニット室扉41d−1〜41d−3の間と、最下部のユニット室扉41d−1とケーブル室扉41fとの間の配電盤筐体部分に、各々独立した複数の長方形状の貫通口に金属網を張った換気口41jを設けたことにある。   In addition, a ventilation port 41e in which a metal net is stretched in a laterally long rectangular through-hole is provided in the lower portion of each unit chamber door (hereinafter referred to as a unit chamber door) 41d-1 to 41d-3, A door 41g of a cable room 31c below the unit room (hereinafter referred to as a cable room door) 41f is provided with a ventilation port 41g with a metal mesh in a rectangular through-hole having a relatively large area. 41h is provided with a ventilation port 41i having a metal mesh on a rectangular through-hole on substantially the entire surface, and further between the unit chamber doors 41d-1 to 41d-3 and at the lowest unit chamber door In the switchboard casing portion between 41d-1 and the cable room door 41f, a ventilation port 41j in which a plurality of independent rectangular through holes are provided with a metal net is provided.

また、母線室扉41hの換気口41iの面積は、他の全ての換気口41e,41g,41jの面積を加算した面積と同等以上とすることが好ましい。
このような構成の配電盤41内に積載される引出形機器22−1〜22−3は、図8に示した配電盤31と同じであるが、当該配電盤41の場合、各仕切り板41a−1〜41a−3,41bの両側部分に各々が上下で重なる貫通口41cが設けられているので、各引出形機器22−1〜22−3の配線を図11〜図13(a)に示すように、各貫通口41cを通して行っている。
In addition, the area of the ventilation port 41i of the busbar door 41h is preferably equal to or larger than the area obtained by adding the areas of all the other ventilation ports 41e, 41g, and 41j.
The drawer-type devices 22-1 to 22-3 loaded in the switchboard 41 having such a configuration are the same as the switchboard 31 shown in FIG. 8, but in the case of the switchboard 41, the partition plates 41a-1 to 41a-1. Since through holes 41c are provided on both sides of 41a-3 and 41b so as to overlap each other, the wiring of each of the drawer-type devices 22-1 to 22-3 is as shown in FIGS. 11 to 13 (a). This is done through each through hole 41c.

なお、この配線は、図12及び図13(a)に示すように、三相用の配線サポート部43で配線を中継して行うようになっている。
つまり、ケーブル室31cから引き込んだケーブル線を、各ユニット室の両側部分を通して各引出形機器22−1〜22−3に配線している。なお、前述の配電盤31では裏面部分を通して配線していた。
In addition, as shown in FIG.12 and FIG.13 (a), this wiring is performed by relaying wiring by the wiring support part 43 for three phases.
That is, the cable wire drawn from the cable chamber 31c is wired to each of the drawer-type devices 22-1 to 22-3 through both side portions of each unit chamber. In addition, in the above-mentioned switchboard 31, it wired through the back surface part.

また、各貫通口41cは、換気口の役割も果たすが、これは配電盤41の前面に設けられた各換気口41e,41g,41i,41jと連携して行われる。この換気時の空気の流れを、図14を参照して説明する。図14に空気の流れを矢印で示したが、矢印の実線部分は配電盤41の外を流れる空気を示し、破線部分は配電盤41の内部を流れる空気を示す。   Each through-hole 41c also serves as a ventilation port, which is performed in cooperation with each ventilation port 41e, 41g, 41i, 41j provided on the front surface of the switchboard 41. The air flow during ventilation will be described with reference to FIG. In FIG. 14, the flow of air is indicated by arrows. A solid line portion of the arrows indicates air flowing outside the switchboard 41, and a broken line portion indicates air flowing inside the switchboard 41.

矢印Y21で示すように、ケーブル室扉41fの最下部に位置する換気口41gから入り込んだ空気は、自然対流によって上方に上り、各仕切り板41aの貫通口41cを通って主に最上部の母線室扉41hの換気口41iから外へ抜け出るが、一部は、破線分岐矢印Y21で示すように、各ユニット室に入り込み、また、ケーブル室上部に設けられた換気口41jから外へ抜ける。   As indicated by an arrow Y21, the air that has entered through the ventilation port 41g located at the bottom of the cable chamber door 41f rises upward by natural convection, and mainly passes through the through-hole 41c of each partition plate 41a and mainly the uppermost busbar. Although it escapes out of the vent 41i of the room door 41h, a part enters each unit room as shown by a broken line branch arrow Y21, and also exits through a vent 41j provided in the upper part of the cable chamber.

矢印Y22で示すように、各ユニット室扉41d−1〜41d−3の換気口41eからユニット室に入り込んだ空気は、上記の破線分岐矢印Y21で示した空気と共に、当該ユニット室の引出形機器22の熱などによって対流しながら同室の上部に形成されている複数の換気口41jから矢印Y23で示すように外へ抜け出ると共に、矢印Y21に合流させた破線矢印Y24で示すように貫通口41cから上方へ流れる。
このように、配電盤41のユニット室毎に下部分に設けられた換気口41eから空気が入り込んで各室で対流しながら上部分に設けられた換気口41jから外へ抜け出すので、ユニット室毎に配置された引出形機器22が外からの空気によって冷却されると共に、引出形機器22から発生する熱が外部へ放出される。
As indicated by the arrow Y22, the air that has entered the unit chamber from the ventilation ports 41e of the unit chamber doors 41d-1 to 41d-3 together with the air indicated by the broken line branch arrow Y21, is a drawer type device of the unit chamber. 22 through the plurality of ventilation openings 41j formed in the upper part of the same room while convection by the heat of 22 or the like, as shown by the arrow Y23, and from the through opening 41c as shown by the broken line arrow Y24 joined to the arrow Y21. Flows upward.
In this way, air enters from the ventilation port 41e provided in the lower part of each unit room of the switchboard 41 and escapes from the ventilation port 41j provided in the upper part while convection in each room. The arranged drawer-type device 22 is cooled by air from the outside, and heat generated from the drawer-type device 22 is released to the outside.

また、配電盤41の最下部分の換気口41gから空気が入り込んで両側部分の各貫通口41cを上方へ順次通過しながら配電盤41の最上部分の換気口41iから外へ抜け出し、更に、各貫通口41cを順次通過した際に各ユニット室に入り込んで対流しながら同室内の上部分の換気口41jから外へ抜け出すと共に、更に上方の貫通口41cへ流れて最終的に最上部の換気口41iから外へ抜け出すので、ユニット室毎に配置された引出形機器22が外からの空気によって冷却されると共に、引出形機器22から発生する熱が外部へ放出される。   Further, air enters through the ventilation port 41g at the lowermost part of the switchboard 41 and passes through each through-hole 41c at both sides sequentially upward, and then escapes from the ventilation port 41i at the uppermost part of the switchboard 41. When passing through 41c sequentially, it enters each unit room and convects to escape from the upper vent 41j of the upper part of the room, and further flows to the upper through-hole 41c and finally from the uppermost vent 41i. Since it pulls out, the drawer type equipment 22 arranged for each unit room is cooled by the air from the outside, and the heat generated from the drawer type equipment 22 is released to the outside.

この際、配電盤41の内部において下から上へ空気が最も多く流れる主通路となる各貫通口41cは、各引出形機器22−1〜22−3の載置面から両側に外れた部分に形成されているので、下から上ってくる温まった空気の多くが、引出形機器22−1〜22−3から離れた位置を流れながら最上部の換気口41iへ導かれる。
このような、第2の実施の形態の配電盤41によれば、各ユニット室の仕切り板41aの両側部分に貫通口41cを設け、ケーブル室31cから引き込んだケーブル線を、各貫通口41cを通して各引出形機器22−1〜22−3に配線する構造としたので、第1の実施の形態の裏面部分を通して配線する構造の配電盤31よりも奥行き方向を薄型とすることができる。
At this time, each through-hole 41c, which is the main passage through which air flows most frequently from the bottom to the top inside the switchboard 41, is formed at portions that are off to the both sides from the placement surface of each of the drawer-type devices 22-1 to 22-3. Therefore, most of the warm air that rises from below is guided to the uppermost ventilation port 41i while flowing away from the drawer-type devices 22-1 to 22-3.
According to the switchboard 41 of the second embodiment as described above, the through holes 41c are provided on both side portions of the partition plate 41a of each unit chamber, and the cable wires drawn from the cable chamber 31c are passed through the through holes 41c. Since the wiring is made to the drawer-type devices 22-1 to 22-3, the depth direction can be made thinner than the switchboard 31 having the structure of wiring through the back surface portion of the first embodiment.

また、引出形機器22が配置されたユニット室毎に外から空気を取り込んで対流させながら外へ排気すると共に、配電盤41の略最下部から空気を取り込んで上方へ流し、この際、各ユニット室内部の対流空気と合流させながら略最上部から外へ排気する自然換気が行えるようにしたので、各ユニット室に配置される引出形機器22を外からの空気によって冷却することができ、また、引出形機器22から発生する熱を配電盤41の外へ効率よく放出することができる。   In addition, each unit room in which the drawer-type device 22 is arranged takes air from the outside and exhausts it outside while convection, and also takes air from the lowermost part of the switchboard 41 and flows it upward. Since natural ventilation that exhausts from the substantially uppermost part while merging with the internal convection air can be performed, the drawer type equipment 22 arranged in each unit room can be cooled by the air from the outside, The heat generated from the drawer-type device 22 can be efficiently released out of the switchboard 41.

これによって、配電盤41に引出形機器22が多段積みとされる構成であっても、各引出形機器22の過熱を防止することができる。従って、引出形機器22の過熱が起因する故障などの不具合を防止することができる。
従来例では、下の引出形機器22の熱が直上の引出形機器22へ放射されるので、引出形機器22が上に配置される程に過熱されて故障などの不具合を引き起こす要因となっていた。
Thereby, even if it is the structure by which the drawer | drawing-out type equipment 22 is stacked in the switchboard 41, overheating of each drawer-type equipment 22 can be prevented. Accordingly, it is possible to prevent problems such as a failure caused by overheating of the drawer-type device 22.
In the conventional example, the heat of the drawer-type device 22 below is radiated to the drawer-type device 22 directly above, so that the drawer-type device 22 is overheated to the extent that it is arranged on the top, causing a malfunction such as a failure. It was.

また、各貫通口41cを、各引出形機器22の載置面から両側に外れた部分に形成し、配電盤41の内部にて下から上へ空気が最も多く流れる主通路となるようにしたので、下から上ってくる熱を帯びた空気の多くが引出形機器22を避けて流れ、これによって、引出形機器22を下からの空気で加熱することなく外へ排出することができる。従って、各引出形機器22の過熱を効率よく防止することができる。
更に、母線室扉41hの換気口41iの面積は、他の全ての換気口41e,41g,41jの面積を加算した面積と同等以上とした場合、換気口41iよりも下方に位置する他の全ての換気口41e,41g,41jから入った空気を効率よく排出することができる。
In addition, since each through-hole 41c is formed in a part deviated on both sides from the placement surface of each drawer-type device 22, it becomes a main passage through which the most air flows from the bottom to the top inside the switchboard 41. Most of the heated air coming from below flows away from the pull-out type device 22, so that the pull-out type device 22 can be discharged outside without being heated by the air from below. Accordingly, overheating of each drawer-type device 22 can be efficiently prevented.
Furthermore, when the area of the ventilation port 41i of the bus bar door 41h is equal to or larger than the area obtained by adding the areas of all the other ventilation ports 41e, 41g, and 41j, all other areas located below the ventilation port 41i. The air that has entered through the ventilation openings 41e, 41g, and 41j can be efficiently discharged.

21,31 配電盤
21a ユニット室
21c,31c ケーブル室
22,22−1〜22−5 引出形機器
22a 高圧ヒューズ
22b 電磁操作コイル
22c 真空バルブ
22d 開閉機器
22e 電源側断路部
22f 負荷側断路部
22g 絶縁ブッシング
22h,22h−1〜22h−3 負荷側端子
22i 第1の絶縁フレーム
22j 操作電源トランス用ヒューズ
22k 操作電源トランス
22m 移動台車
22n 変流器
22p 操作機器部
22q 第2の絶縁フレーム
22r 凹部
22t 留め金具
22u 固定座
22v 蓋部
23,23−1〜23−5 負荷ケーブル
24 母線
24a 垂直母線
25,25−1〜25−5 零相変流器(ZCT)
26,26−1〜26−5 ケーブルブラケット
32−1〜32−3 ケーブル接続端子
41a−1〜41a−3,41b 仕切り板
41c 貫通口
41e,41g,41i,41j 換気口
41d−1〜41d−3 ユニット室扉
41f ケーブル室扉
41h 母線室扉
43 配線サポート部
21, 31 Switchboard 21a Unit room 21c, 31c Cable room 22, 22-1 to 22-5 Drawer type equipment 22a High voltage fuse 22b Electromagnetic operation coil 22c Vacuum valve 22d Switchgear 22e Power supply side disconnection part 22f Load side disconnection part 22g Insulation bushing 22h, 22h-1 to 22h-3 Load side terminal 22i First insulating frame 22j Operation power transformer fuse 22k Operation power transformer 22m Moving carriage 22n Current transformer 22p Operation device section 22q Second insulation frame 22r Recess 22t Fastener 22u fixed seat 22v lid 23, 23-1 to 23-5 load cable 24 bus 24a vertical bus 25, 25-1 to 25-5 Zero phase current transformer (ZCT)
26, 26-1 to 26-5 Cable bracket 32-1 to 32-3 Cable connection terminal 41a-1 to 41a-3, 41b Partition plate 41c Through hole 41e, 41g, 41i, 41j Ventilation port 41d-1 to 41d- 3 Unit room door 41f Cable room door 41h Bus room door 43 Wiring support section

Claims (1)

盤内に配設された三相の母線と負荷ケーブルとの間に接続され、所定以上の電流が流れた際に電路を遮断する引出形機器を多段積みに収容する配電盤において、
盤内の裏面側にケーブル室を配置し、該ケーブル室内における左右の側面に上下方向に互い違いで且つ平面から見て横一線に複数の零相変流器を配置し、前記ケーブル室内に底面または上面を貫通して引き込まれた複数の負荷ケーブルを、前記零相変流器に個別に貫通させるように、複数の支持部材によって個別に支持する
ことを特徴とする配電盤。
In a switchboard that is connected between a three-phase bus arranged in the panel and a load cable, and that accommodates drawer-type equipment that cuts off the electrical circuit when a current exceeding a predetermined level flows, in a multi-stage stack,
A cable chamber is arranged on the back side of the panel, and a plurality of zero-phase current transformers are arranged on the left and right side surfaces in the cable chamber in a vertical direction and in a horizontal line when viewed from the plane. A power distribution board, wherein a plurality of load cables drawn through the upper surface are individually supported by a plurality of support members so as to individually penetrate the zero-phase current transformer .
JP2011260237A 2006-04-28 2011-11-29 switchboard Active JP5351243B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106025897A (en) * 2016-07-07 2016-10-12 周丽玲 Pull-and-push automatically controllable electric power drawer cabinet device with heat radiating function
CN110398104A (en) * 2019-08-01 2019-11-01 安徽冠东科技有限公司 A kind of environment-friendly type pressure-reducing fresh-keeping storage apparatus

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CN104577855A (en) * 2014-12-23 2015-04-29 芜湖金牛电气股份有限公司 Low-voltage drawer cabinet
CN104577839A (en) * 2014-12-26 2015-04-29 芜湖金牛电气股份有限公司 Novel drawer cupboard
CN110783845B (en) * 2019-11-05 2021-02-26 中国化学赛鼎宁波工程有限公司 Arrangement control method and device for intelligent draw-out type low-voltage switch cabinet system

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JPS5561210A (en) * 1978-10-31 1980-05-08 Tokyo Shibaura Electric Co Enclosed switchboard
JPH0530615A (en) * 1991-07-18 1993-02-05 Toshiba Corp Metal clad switchgear
JP3664845B2 (en) * 1997-05-19 2005-06-29 株式会社東芝 Metal closed switchgear
JP4062888B2 (en) * 2001-03-29 2008-03-19 日新電機株式会社 Switchgear
JP2003174707A (en) * 2001-12-06 2003-06-20 Mitsubishi Electric Corp Closed switchboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106025897A (en) * 2016-07-07 2016-10-12 周丽玲 Pull-and-push automatically controllable electric power drawer cabinet device with heat radiating function
CN106025897B (en) * 2016-07-07 2018-01-26 天源华威集团有限公司 It is a kind of to automatically control the electric power drawer cabinet device that promotes and radiate
CN110398104A (en) * 2019-08-01 2019-11-01 安徽冠东科技有限公司 A kind of environment-friendly type pressure-reducing fresh-keeping storage apparatus

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