JP2003134615A - Low voltage distribution equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low voltage distribution equipment which is simple to install requiring only a short time, and which can flexibly accommodate various modifications. SOLUTION: The busbar unit 23, which is a distribution component, is installed directly on a support member 8. Side face members 14 are installed on both sides of the unit between the floor and the upper body. A face cover 16 and a cover 17 are installed on the front face to cover the interior.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of low-voltage distribution equipment installed indoors.

[0002]

2. Description of the Related Art When a large number of power distribution parts for supplying electric power to a plurality of electric load devices are concentrated in one place and housed in a room, for example, an electric room, a person does not easily touch the charging part. You need to keep it. For this reason, conventionally, a switchboard has been used in which power distribution components are collectively stored in a case formed of a steel plate in a rectangular parallelepiped shape so that the charging part is not exposed. As another conventional power distribution facility, there is an open-back type as shown in FIG. In this open-back type, various power distribution components 102 are attached to a front panel 100 and an auxiliary frame 101 attached to the front panel 100. The lower end of the front panel 100 is fixed to a channel 103 provided on the floor, and the front panel 100 is held by a stay pipe 104 combined with the rear surface thereof.

[0003]

The switchboard described above has a large volume because it has a housing structure, and also has a heavy weight because a housing member is added in addition to many power distribution parts. In addition, the open-back type also has a large outer dimension because a large number of power distribution components are mounted on the front panel, and the front panel needs to be robust, and is therefore heavy. Therefore, all of them have a problem that it is difficult to carry them into the installation site. Also,
All of them had to be delivered in a completed form, which caused a problem of delivery time. Furthermore, when the electric load device is changed, it is not easy to modify it at the installation site because the space for installing additional parts is limited, and in some cases it may be necessary to take it out and rebuild it, or make a completely new one. there were. Furthermore, the open-back type has a problem that a complicated and skilled technique as electric work is required for assembling the stay pipe.

Therefore, an object of the present invention is to provide a low-voltage power distribution facility that is easy to install, has a short installation period, and can flexibly cope with various changes.

[0005]

In order to solve the above problems, the invention of claim 1 is a low-voltage power distribution facility provided in a room, which comprises a pillar member or a room partition member provided in the room. In the front of the power distribution component, the power distribution component mounted on the back component, the side members that are vertically arranged on both sides of the power distribution component independently of the power distribution component, and are attached to the frame body and / or the rear component of the room. A front cover that covers the inside by connecting the left and right side members is included.

With such a structure, the power distribution component, the side member and the front cover can be individually manufactured, individually carried into the room, and individually mounted. Further, since the front cover is attached, the structure is such that the charging part of the power distribution component cannot be touched from the surface, and the appearance can be presented like a wall surface or the surface of a closet. In addition, by increasing the number of side members, it is possible to freely partition the space for mounting the power distribution component. The power distribution component may be directly attached to the pillar member or the partition member. Alternatively, a plurality of power distribution components may be attached to a common base member, and the base member may be attached to a support member or the like.

The side member is firmly held by being attached to the body of the chamber or the back member. The side member may be directly attached to the body of the chamber, or may be attached to a member that is rigidly attached to the body.

According to the invention of claim 2, in addition to the invention of claim 1, since the side member is detachable, the space for mounting the power distribution component can be easily changed. Therefore, even after the low-voltage power distribution equipment is once installed, it is possible to easily cope with the specification change of the equipment due to reduction or addition of the electric load device.

According to the invention of claim 3, in addition to the invention of claim 1 or 2, since the side member also serves as a cable rack, the side member can be effectively utilized.

The invention of claim 4 is the invention of claim 1, 2 or 3.
In the invention of claim 1, each of the power distribution components has a plurality of conductors whose thickness faces face the front and is attached in parallel with each other, and a plurality of circuits having different ratings having terminals connectable to the conductors from the front. It will include a busbar unit to which a breaker can be attached. With this configuration, only the busbar unit can be carried in and attached, and the circuit breaker can be installed later. Further, even if the electric load device is changed, the circuit breaker can be easily changed or added without turning off the power.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the examples shown in FIGS. With reference to FIG. 1 and FIG. 2, the electric room in which the low voltage power distribution equipment 1 of the present embodiment is housed has a high voltage power distribution section 2 and a low voltage power distribution section 3. The high-voltage power distribution section 2 accommodates devices that receive high-voltage power and convert it to low-voltage power. Further, the low-voltage power distribution section 3 accommodates the low-voltage power distribution equipment 1 of this embodiment, which is arranged at the boundary with the high-voltage power distribution section 2. An operator space 3a is provided in front of the low-voltage power distribution equipment 1 in the low-voltage power distribution section 3, and a control monitoring table (not shown) for controlling and monitoring an electric load is provided in this space 3a. May be stored. On the back side of the low-voltage power distribution equipment 1, the upper skeleton 4 and the floor 5 (lower skeleton) of the room
A pair of vertical members 6 such as H-shaped steel provided between the vertical members 6 and a column member 8 including a plurality of horizontal members 7 such as grooved steel provided on the vertical member 6 are provided.

With reference to FIG. 3, in the low-voltage power distribution section 3, an empty space 9 and a first power distribution space 10 in which power distribution components such as circuit breakers are housed are sequentially installed from the left along a column member 8. A second power distribution space 11 and a third power distribution space 12 are provided. In addition, low voltage distribution section 3
Side wall 13, empty space 9 and first power distribution space 1
Between 0, the first distribution space 10 and the second distribution space 11
A side member 14 is provided between the second power distribution space 11 and the third power distribution space 12 and at the right end of the third power distribution space 12. Then, front covers are attached to the side members 14 on both sides of each space between the floor surface 5 and the ceiling plate 18 so as to isolate the inside of each space from the operator space 3a of the low-voltage power distribution section 3. Therefore, these front covers have a closet-like or wall-like appearance as a whole in terms of appearance and functionally have an insulating function such that the bare charging part inside each power distribution space cannot be touched from the operator space 3a. In addition to the door 15, it also has a function of partitioning the operator space 3a and the high-voltage distribution section 2. Some front covers are provided for operating and monitoring the power distribution components, such as a decorative cover 16 that merely covers the inside and a cover 17 described later.

Referring to FIG. 4, the side surface member 14 is provided with mounting members 19 at the upper end and the lower end, and the low-voltage distribution section 3
It is fixed with screws between the upper body 4 and the floor 5 (lower body). (It may be fixed to the column member 8.) The side member 14 is a ladder having an appropriate number of cross rails 20, and an output cable 22 from a circuit breaker 21 described later is held on the side member 14. To be done. This side member 14
As long as the dimensions are the same, commercially available mass-produced products can also be used.

With reference to FIGS. 4, 5 and 6, the structure of the first power distribution space 10 will be described below as a representative of each power distribution space. The busbar unit 23, which is a power distribution component, is a unit box 24 made of an iron plate formed by bending so as to have a C-shaped cross section, and a unit box 24 mounted inside the unit box 24 via a mounting base 25 made of an insulator. It includes a phase-shaped busbar 26. The unit box 24 has, on its surface, a vertically long opening 24a corresponding to the C-shaped opening provided along the bus bar 26 and a large number of screw holes 24b formed on both sides of the vertically long opening 24a. is doing. The busbar unit 23 is equipped with a plurality of plug-in type circuit breakers 21 which are both power distribution components and are connected to the busbar 26, and a sensor device 27 for measuring the current and voltage of the circuit. The busbar unit 23 is attached to the horizontal member 7 of the column member with screws at the attachment legs 24c provided in the unit box 24. The sensor device 27 is attached to the upper end 24d of the unit box 24, and the cable 28 introduced from the high-voltage distribution section 2 through the gap of the support member 8 is connected to the upper terminal 27a of the sensor device 27. Also,
The lower terminal (not shown) is the connection end portion 26 of the bus bar 26.
connected to a.

The circuit breaker 21 has an opening / closing operation handle 21a.
Since the opening / closing operation handle 21a is attached so as to protrude from the vertically long hole 17a formed in the cover 17 attached to the front of the busbar unit 23, the circuit breaker 21 can be operated from the front surface. Referring to FIG. 7, the circuit breaker 21 has a structure in which a plug terminal portion 21c is attached to the bottom of a breaker body 21b having an outer shell of an insulator. The plug-in terminal portion 21c has an insulating base,
Clip terminal 21d (only the central phase is shown)
And a conductor 21e for connecting the terminal of the circuit breaker body 21b and the clip terminal 21d, and a mounting screw 21f. In this circuit breaker 21, the plug-in terminal portion 21c is provided in the unit box 24.
Is inserted through the vertically long opening 24a, the clip terminal 21d of the insertion terminal portion 21c is attached so as to come into contact with the busbar 26, and the mounting screw 21f is fixed to the screw hole 24b of the unit box 24. This circuit breaker 21
Can be installed or removed by holding the outer shell of the circuit breaker body 21b without touching the charging part without turning off the power of the high-voltage distribution section 2.

The busbar unit 23 of the low voltage power distribution equipment 1 is provided with circuit breakers 21 of different models. Generally, the circuit breaker main body of the circuit breaker is the same model even if the rated current is different within a certain range, as long as the other rated values, external dimensions, mounting dimensions, etc. are the same. On the other hand, if the model is different, the external dimensions and mounting dimensions as well as the rated value will be different. However, the prepared circuit breaker 21 has different plug-in terminal portions 21c depending on the model of the breaker body 21b.
Is attached to the busbar unit 23 so that it can be freely attached. That is,
Clip terminal 21d of plug terminal 21c of any model
Are also arranged so as to match the arrangement pitch of the three-phase bus bars 26. In addition, all models have this open / close operation handle 2
The height of the base member of the insertion terminal portion 21c is adjusted so that 1a projects from the vertically long hole 17a of the cover 17. Furthermore, even if the mounting screw 21f is different in model,
Since they are provided at the same pitch in the left-right direction in FIG. 7, they can be fitted in any of the many screw holes 24b of the unit box 24. As described above, since different types can be freely attached to the busbar unit 23 without requiring special processing, even if the specifications of the circuit breaker 21 are not fixed, the busbar unit 23 is manufactured in advance and the column member 8 Can be attached to.

In this embodiment, the first power distribution space 10, the second power distribution space 11 and the third power distribution space 12 appear to have the same structure in FIG. 2, but the present invention is not limited to this, and the width of the space is not limited to this. The internal power distribution components and the front cover can be freely configured. Furthermore, in the above-mentioned embodiment, the busbar unit is mounted in the vertical direction, but it may be mounted in the horizontal direction. In this case, it can be easily dealt with by increasing the mounting interval of the side member 14. The busbar unit 2 which is a power distribution component
Since 3 is relatively large, it is directly attached to the column member 8. However, for example, a plurality of small power distribution components may be attached to a common substrate, and this common substrate may be attached to the column member 8. Further, in the present embodiment, the power distribution component is mounted on the pillar member 8 provided for the low voltage power distribution equipment, but a partition member such as a wall is provided between the low voltage power distribution section 3 and the high voltage power distribution section 2. In this case, a power distribution component may be attached to this partition member.

Although the embodiments of the present invention have been described above, the embodiments of the present invention disclosed above are as follows.
It is merely an example, and the scope of the present invention is not limited to the above-described embodiments of the invention. The scope of the present invention is shown by the description of the claims, and is intended to include meanings equivalent to the description of the claims and all modifications within the scope.

[0019]

The present invention is embodied in the form described above, and in the invention of claim 1, in a low-voltage power distribution facility installed indoors, a power distribution component, a side member surrounding the power distribution component, and a front cover are separately configured. As a result, the installation time is shortened, including the delivery time of the parts, the parts can be easily brought in, and even if there are changes, there is freedom to deal with them. The effect of being able to exhibit the appearance and improving the appearance.

Further, since the side surface member is detachable, there is an effect that it can be easily added or removed after being installed. Furthermore, the side member also serves as a cable rack,
There is also an effect that the side surface member can be effectively used.

Furthermore, since a busbar unit is provided as a power distribution component and a plug-in type circuit breaker can be mounted on this busbar unit, only the busbar unit can be carried in or installed first, which simplifies the installation work. After mounting, the circuit breaker can be mounted and removed without turning off the power. Further, since circuit breakers of a plurality of types of ratings can be attached, there is an effect that the circuit breaker can be easily changed or added even if the load circuit device is changed.

[Brief description of drawings]

1A and 1B are a plan view and a side view, respectively, in which an (a) ceiling plate 18 of an electric room accommodating a low-voltage distribution facility according to an embodiment of the present invention is omitted.

FIG. 2 is a view taken along the line AA of FIG. 1B for explaining a support member 8.

FIG. 3 is a front view of the low-voltage distribution facility of FIG.

FIG. 4 is an exploded perspective view partially showing the inside of the low voltage power distribution equipment of FIG. 1.

5 is a plan view seen from BB shown in FIG. 4, partially showing the inside of the low-voltage power distribution equipment of FIG. 1. FIG.

FIG. 6 is a front view (a) and a side view (b) of a busbar unit housed in the low-voltage distribution facility in FIG. 1.

7A and 7B are an external front view and an external side view, respectively, showing an example of a circuit breaker.

FIG. 8 is (a) a front view and (b) a side view showing an example of an open-back power distribution facility.

[Explanation of symbols]

1 Low voltage distribution equipment 2 high voltage distribution section 3 low voltage distribution section 3a Operator space 4 Upper body 5 floors 6 Vertical member 7 Horizontal members 8 prop members 9 empty space 10 First distribution space 11 Second power distribution space 12 Third distribution space 13 Horizontal wall 14 Side members 15 Door 16 Makeup Cover 17 cover 17a Vertical hole 18 ceiling plate 19 Mounting member 20 horizontal cross 21 Circuit breaker 21a Opening / closing operation handle 21b Circuit breaker body 21c Plug-in terminal part 21d clip terminal 21e Connection conductor 21f mounting screw 22 cable 23 Busbar unit 24 unit box 24a Vertical opening 24b screw hole 24c mounting leg 24d upper end 25 mounting base 26 Bus 26a connection end 27 Sensor equipment 27a Upper terminal 28 cables

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yuji Fujita             7-10 Hannan-cho, Abeno-ku, Osaka-shi Temple             Inside Saki Electric Industry Co., Ltd. F term (reference) 5G016 AA03 CD07 CD35 DA10 DA32                 5G365 AA01 AD06

Claims (4)

[Claims] 1. A low-voltage distribution facility installed indoors, comprising:
A power distribution component mounted on a back member formed of a pillar member or a partition member of the chamber provided in the chamber, and the power distribution component independent of the power distribution component and arranged vertically on both sides of the power distribution component of the chamber. Low-voltage power distribution equipment including a side member attached to the rear member and a front cover that covers the inside by connecting the left and right side members in front of the power distribution component. 2. The low-voltage power distribution equipment according to claim 1, wherein the side member is removable. 3. The low voltage power distribution equipment according to claim 1, wherein the side member also serves as a cable rack. 4. Each of the power distribution components has a plurality of conductors whose thickness faces are facing front and are attached in parallel to each other, and terminals having insertable connections from the front to the conductors have different ratings. A busbar unit, to which a plurality of circuit breakers can be attached, is included.
2 or 3 low voltage distribution equipment.