JPH03245732A - Distribution board - Google Patents

Abstract

PURPOSE:To eliminate disarrangement of a main breaker and branch breakers and to easily wire a breaker to the specific branch breaker by arranging the mounting base of the branch breaker through a space with respect to the bottom of a box. CONSTITUTION:A bus bar 6 is provided in the center of a box 1 from the side of a main breaker 5 to the intermediate part of the box 1. The bar 6 and the breaker 5 are connected via a wire 7. Branch breakers 8a-8n are arranged laterally in one row above and below the bar 6. The breakers 8a-8n are electrically connected to the bar 6. The mounting base 41 of the branch breaker is provided with a space 60 with respect to the bottom of the box 1, and wires 61 for connecting the specific breakers 8a-8d to the remote controller of a breaker are arranged in the space 60.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a distribution board equipped with a common main breaker and a plurality of branch breakers.

(Prior Art) Conventionally, this type of distribution board is already well known. In this type of distribution board, in response to an overcurrent in each branch, the corresponding branch breaker operates to disconnect the branch electrically. Furthermore, when the total current of each branch becomes excessive, the main breaker operates to disconnect all branches in terms of electrical circuits.

(Problem to be Solved by the Invention) However, as in the above case, when the main breaker operates and cuts off all branches, that is, all loads, it may be unexpectedly difficult for the user to use all electrical appliances. This caused severe inconvenience. In other words, if, for example, a refrigerator or a lighting load is suddenly or inadvertently stopped at night, it can cause a sense of anxiety, and it can cause confusion as recovery operations must be performed in the dark at night. . Furthermore, if the electric cooker is suddenly stopped while in use, the food may be wasted.

The present invention has been made to solve these problems, and it improves convenience for users by preventing as much as possible the main breaker from tripping and suddenly stopping the power supply to the load side of all branches. In addition to being able to perform extremely fine power control, it is also possible to cut off the branch corresponding to a specific branch breaker within the branch breaker without disrupting the arrangement of the main breaker and branch breaker as a distribution board. The object of the present invention is to provide a distribution board that allows easy wiring between devices and specific branch breakers. [Structure of the Invention] (Means for Solving the Problems) The present invention includes a master breaker, a plurality of branch breakers each connected to the master breaker, and a current detector that detects the value of current flowing through the master breaker. and a cutoff device capable of cutting off a branch corresponding to a specific branch breaker among the branch breakers, and a cutoff device capable of cutting off a branch corresponding to a specific branch breaker among the branch breakers, and a cutoff device that receives a detection signal from the current detector and operates the relay when the detection signal exceeds a set current value. A control unit that operates a device to interrupt the load connected to the specific branch breaker and controls the current value flowing through the main breaker to be less than a set current value, the main breaker, the branch breaker group, a current detector, and a relay. A box body having an opening on the front surface in which the device and the control unit are installed; and the main breaker, branch breaker, cutoff device, and control unit are each mounted on the box body and mounted on a stand at the same height as above. At least when installing the branch breaker, the base is provided with a space between it and the bottom surface of the box, and the electric wire connecting the specific branch breaker and the disconnection device is installed in this space. The feature of the structure is that it is provided with a.

(Function) In the present invention, when the current value of each branch exceeds a predetermined value, the corresponding branch breaker is cut off, similar to the conventional one. When the total current value of each branch exceeds a predetermined value, a preset specific branch or load is electrically opened. Therefore, the total current value can be suppressed within a predetermined value. Furthermore, since it is possible to set which branch or load is to be disconnected, inconvenience to the user can be minimized by selecting the load to be connected to that branch or by selecting the load to be disconnected. Note that if the set value is exceeded again after one branch or load is disconnected, the next branch or load is disconnected. The order of disconnecting the branches or loads to be disconnected is set in advance. Furthermore, when a branch or load is disconnected and the total current value falls below a set value, the disconnected branch or load may be automatically restored. In this case, when the detection signal falls below the set current value for a certain period of time, it can be reset,
By restoring the current when it has fallen to, for example, 80% of the set current value, it is possible to prevent the frequent repetition of disconnecting the branch or load that has been restored once the set current value has been exceeded. but,
In addition to automatic return as described above, the present invention also includes a method in which a branch or load that has been disconnected is not returned until it is operated.

Then, the main breaker, branch breaker, cutoff device, and control unit are mounted on the box body and mounted on the stand in the above order with the heights adjusted, and the electric wires connecting the specific branch breaker and the cutoff device are mounted on the stand. Since the branch breaker is installed in the space between the stand and the box, it is possible to connect the wires to additional equipment without disrupting the arrangement of the main breaker and branch breaker as a distribution board. It can be done without turning, making wiring easier.

(Example) ε Hereinafter, an example of the present invention will be described with reference to FIG. 1 to the rumen diagram. Reference numeral 1 denotes a box body, and in this embodiment, it has an elongated main body 2 with an open front, and one end of each of the main bodies 2 is rotatably supported at both ends of the main body 2 in the longitudinal direction, so that the opening can be closed. It consists of door bodies 3a and 3b. In addition,
An opening 4 is formed in the door 3b. Reference numeral 5 denotes a main breaker, which is disposed within the box body 1. In this embodiment, it is disposed at the left end of the box 1 (FIG. 1) when viewed from the front opening side. 6 is a bus bar, which extends from the side of the main breaker 5 to the middle part of the box 1.
It is located almost in the center of the This bus bar 6 and the main breaker 5 are connected by an electric wire 7. Further, above and below the bus bar 6 (FIG. 1), a plurality of branch breakers 8a...8n are arranged in a horizontal row, respectively.

These branch breakers 8a, . . . , 8n are electrically connected to the bus bar 6, respectively.

The structure of the distribution board described so far is relatively common.

Next, 10 is a current detection device, which detects the value of the current flowing through the main breaker 5. In this embodiment, a zero-phase current transformer is used.

The detection signal of this current detection device 10 is manually input to the control section 11 . The control unit 11 compares the detection signal with a preset current value, and if the detection signal exceeds the preset current value, electrically connects a preset specific branch or a specific load. It is to be separated.

That is, in this embodiment, four branches and two loads can be separated, and specific branch breakers 8a to 8d correspond to these four branches, and the two loads include, for example, the air conditioner 12a, 12b. In this embodiment, four relay devices, for example, remote control relays 13a to 13d, are used to disconnect the four branches from the branch breaker group 8a.
It is located to the right of ~8n. 14 is a power transformer for operating these remote control relays 13a to 13d. Also,
In order to separate the two air conditioners 12a, 12b, in this embodiment, a power line superimposed signal is used.
5a and 15b are provided. As such reception control devices 15a and 15b, those already used in telecontrol systems etc. that output a pulse when receiving a power line superimposed signal of its own address may be used. Further, a receiving section is provided which cuts off the power supply to the air conditioners 12a and 112b each time the air conditioners 12a and 12b receive the pulse. Although illustration of such a receiving section is omitted, for example, a known one called an HA terminal can be used as is.

Next, the configuration of the control section 11 will be explained in detail. Structurally, the control unit 11 is constructed by laminating two wiring boards 20 and 21 on which electronic components are mounted, and is housed in a metal case 22, at the right end (the first figure)
It is located in

The wiring board 20 also includes an operation section 23 and a display section 24 (
Details of these will be described later. ), and the case 22 is provided with an operation section 23 and a display section 2.
An opening 25 is provided so that 4 can be operated or visually recognized from the outside.
or is formed. Furthermore, the operating section 23 and the display section 24 are arranged to face the opening 4 of the door 3a of the box 1. As shown in FIG.
32, - sliding off switch 233, order setting switch 234
, a setting switch 235, and the like. The functions of these switches 231 to 235 will be described later. The display section 24 also includes a set current value display section 241, a ranking display section 242, a used current display section 243, and a cut operation display section 24.
4. These display sections 241 to 24
The function of No. 4 will also become clear from the explanation that follows. Note that the display section 24 can be formed using a light emitting diode, liquid crystal, or the like. Further, FIG. 7 functionally shows the configuration of the control section 11.

Reference numeral 30 denotes an arithmetic processing unit that inputs information from the operating section 23, outputs display commands to the display section 24, and sends and receives signals to and from the memory 31. 32 is an A/D converter for A/D converting the detection signal from the current detection device 10, and inputs the digital signal to the arithmetic processing device 30.

33 is a clock means, and 34 is a backup power source for the memory. In addition, in this embodiment, branches corresponding to the branch breakers 8a to 8d and the air conditioner 12a are
, 12b all at once,
- a batch-off input section 36 for batch-off. These - batch ON input section 35 and batch OFF input section 36 are arranged together with the operation section 23 .

A terminal block 50 is provided near the remote control relays 13'a to 13d, in this embodiment above the remote control relays 13a to 13d. One line 51 of the output line of the specific branch breaker 88-8d is connected to this terminal block 50, and the other line 52 is connected via remote control relays 13a-13d, respectively.

The main breaker 5, branch breakers 8a to 80 groups, remote control relays 13a to 13d1, and control unit 11 are installed in the box 1 from the left as seen from the front side: main breaker 5, branch breakers 8a to 8ns, remote control relays 13a to 13d1. The control units 11 are installed in parallel in the order of the control units 11, and each is individually installed on the bases 40 to 40.
43 is attached to two rail-shaped bases 44. which are installed vertically in parallel in FIG.
45 is provided with a space 60 between it and the bottom surface of the box 1, and in this space 60, electric wires 61 connecting specific branch breakers 8a to 8d and remote control relays 13a to 13d, which are disconnecting devices, are arranged. It is set up. In this example, the mounting is on the stand 40.
43 is formed in the shape of a gutter, and forms a space between it and the bottom surface of the box body 1.

The bases 44, 45 are removably attached to the bottom surface of the main body 2 of the box 1 by means such as screws 46, for example. 47 is the main breaker 5 and the branch breaker 8
This will be explained with reference to the front panel having window holes 48 and 49 that expose the operation parts a to 8n. First, regarding assembly, the box 1 is attached to a wall (not shown) or the like by being exposed or embedded. On the other hand, each of the mounting stands 40 to 43 is attached to the base 44.45, and the main breaker 5 and branch breakers 88 to 8n are attached to each of these mounting stands 40 to 43, respectively.
s remote control relays 13a to 13d and terminal block 50.
Install the control section 11. Further, the power transformer 14 is attached to the base 44. The bases 44 and 45, on which the necessary parts have been attached in this manner, are attached to the box 1, and the electrical wiring is completed to complete the assembly. At that time, main breaker 5, branch breakers 8a to 8n, remote control relays 13a to 13d
.

The control unit 11 is installed from the left when viewed from the front, so there is no need to disrupt the layout of the existing distribution board.It can be handled in the same way as a conventional distribution board, and installation and operation are extremely troublesome. It's not what it is. Further, the wiring between the interrupting device and a specific branch breaker can be easily installed by using a stand, and there is no wasted wiring. In addition, in the above-mentioned assembly, after attaching the required parts to each of the mounts 40 to 43, they may be attached to the bases 44 and 45, or the bases 44 and 45 may be attached to the box body 1 in advance.
．． 45 may be attached, and the order is not limited to the above.

Next, various settings are made prior to use.

This setting is performed by the control section 11 described above. When power is supplied, the arithmetic processing unit 30 starts processing from reset. Therefore, when the current value is set using the numeric keypad switch 231 of the operation unit 23 and the setting switch 234 is pressed, this set current value is read and, if appropriate, the data in the memory 31 is updated and the display data is also updated. The updated data of the lever is displayed on the set current value display section 241.

To set the order of the branches and loads to be cut off, press the order switch 235 and use the numeric keypad switch 231 to rank the corresponding branches or loads, and switch the return switch each time one order is set. 23
Press 6. When the return switch 236 is pressed, the arithmetic processing unit 30 reads the set order and stores it in the memory 31 if it is appropriate. When setting the ranking, the ranking input using the numeric keypad switch 231 is displayed on the ranking display section 242, so that the operator can confirm the ranking while setting the ranking. In setting the current value and setting the ranking, if the input data exceeds a permissible value, it is determined that an error has occurred, and an error message is displayed, such as by scrolling the corresponding display section.

In use, the current detection device 10 detects the current flowing through the main breaker 5 and inputs this to the control section 11 . In the control section 11 , an A/D conversion device 32 converts the detection signal into a digital signal and inputs it to the arithmetic processing device 30 . In the arithmetic processing unit 30, -slide-in switch 232;
- When the sliding switch 233 is not pressed, this digital signal is compared with the set current value. As a result of the comparison, when the detection signal exceeds the set current value and continues for a predetermined period of time, for example, one second, data regarding the branch or load to be cut off is updated and a cutoff signal is output.

Furthermore, if the detection signal is equal to or higher than the set current value (or if it subsequently becomes equal to or higher than the set current value), similar processing is performed to cut off the next branch or load.

After all of the pre-specified branches and loads are cut off,
Since there is no longer anything to shut off, from now on, when the detection signal exceeds the set current value, it will operate in the same way as a conventional distribution board.

As mentioned above, if the detection signal is lower than the set current value while all of the specified branches and loads are cut off, and the current continues for a predetermined period of time, for example, 1 minute, the load, that is, the air conditioner 1
2a is automatically restored. Further, when the pressure detection signal becomes lower than the set current value and continues for a predetermined period of time, for example, one minute, the air conditioner 12b is automatically reset. In addition, in this example,
The air conditioners 12a and 12b are set to be automatically reset, and the branches are set not to be automatically reset. Of course, it is also possible to automatically return to a branch. However, considering that it is unknown which load will be connected to the branch, or that a heat-generating device may be connected, it is considered safer to not restore automatically.

Note that the present invention is not limited to the above-mentioned embodiments, but allows various embodiments. For example, the interrupting device is not limited to a remote control relay, and may be a semiconductor, for example.

[Effects of the Invention] As described above, the present invention includes a master breaker, a plurality of branch breakers each connected to the master breaker, a current detector that detects the current value flowing through the master breaker, and a branch breaker. A interrupting device capable of interrupting a branch corresponding to a specific branch breaker among the breakers, and receiving a detection signal from the current detector and actuating the relay when the detection signal exceeds a set current value. A control unit that controls the current value flowing through the main breaker to be less than a set current value by cutting off the load side connected to a specific branch breaker, and the main breaker, the branch breaker group, the current detector, the interrupting device, and the control unit. a box body having an opening on the front side for the device;
, a specific branch or load can be cut off before the current flowing through the main breaker reaches the cutting current of the main breaker. Therefore, it is possible to prevent a conventional electrical control panel from suddenly cutting off the entire load, confusing the user, or cutting off an important load undesirably, which may lead to secondary damage. be. In addition, the main breaker, branch breaker, cutoff device, and control unit are each mounted on a box body and mounted on a stand in the above order, matching the height, and branching the electric wire connecting a specific branch breaker and cutoff device. Since the breaker is installed in the space between the stand and the box, it can be handled like a conventional distribution board without changing the arrangement of the main breaker and branch breakers in the distribution board. , Installation, construction and operation can be done easily.

Further, the wiring between the adjacent breaker device and the branch breaker, especially a specific branch breaker, can be mounted using a stand, and the wiring can be easily done without wasting any wiring.

[Brief explanation of drawings]

1. ~ No. 1. 1, from the start,,)-gawa. In the blue version, Figure 1 is a front view with the door open, Figure 2 is a front view with the door closed, and Figure 3 is a cross-sectional view of the line 1-m line in Figure 1.
Figure 4 is a sectional view taken along line IV-IV in Figure 1, Figure 5 is a sectional view of the control unit, Figure 6 is a front view of the operation panel of the control unit, and Figure 7 is a sectional view of the control unit.
The figure is a block diagram of the control section, and Figure 8 is a circuit explanatory diagram.

Claims (1)

[Claims] (1) A master breaker; A plurality of branch breakers each connected to the master breaker; A current detector that detects the current value flowing through the master breaker; A current detector corresponding to a specific branch breaker among the branch breakers mentioned above; A interrupting device capable of interrupting the branch; A load side connected to the specific branch breaker that receives a detection signal from the current detector and activates the relay device when the detection signal exceeds a set current value. a control unit that controls the current value flowing through the main breaker to be less than a set current value by interrupting the main breaker; and a box body having an opening on the front that houses the main breaker, branch breaker group, current detector, interrupting device, and control unit. and; The main breaker, the branch breaker, the interrupting device, and the control unit are installed in the above order on the box body by matching the mounting heights to the respective mounting bases, and at least the mounting base of the branch breaker is mounted on the box body. 1. A distribution board, characterized in that it is provided with a space between it and the bottom surface of the body, and an electric wire connecting the specific branch breaker and the interrupting device is disposed within the space.