JPH0595608A - Distribution board and demand controller for distribution line - Google Patents

Abstract

PURPOSE:To provide a demand controller and a distribution board at a low cost easily without the necessity of making the size larger or performing excessive working, by effectively utilizing an existing box for a distribution board. CONSTITUTION:This invention concerns a distribution board 1 having a box 1A in which a master breaker 2, branch breakers 3, and a preparatory space 5 are provided. And a demand controller 6 which makes a load with a low degree of importance perform power suppressing control when overcurrent of a set value or more is detected, is installed in the preparatory space 5. The damand controller 6 has a controlling means 9 for setting the degree of priority composed of multilayer-structure circuit boards and circuit parts mounted on them, and a remote control relay 8 to be controlled for changing over contacts by this controlling means 9, arranged in parallel in the same case 7 as one unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board for general houses and a demand control device installed on the distribution board.

[0002]

2. Description of the Related Art In recent years, in general houses, large air conditioners, electric cooking heaters, dryers, and other devices having a large electric capacity have been used. If all such electric devices are used at the same time, the breaker capacity may be insufficient.

Therefore, when electricity is overused in this way, a device having a power control function is provided so that equipment relatively less influential in life can be temporarily stopped and power can be effectively used within the contracted capacity. A distribution board for use, that is, a distribution board with a demand control function has been developed.

In this distribution board, the demand control device constantly monitors the current value used, and when a power shortage occurs, the dedicated branch circuit and the air conditioner are turned off according to a preset order. The apparatus is configured to have a priority setting control means, a contact switching remote control relay controlled by the control means, and the like. There is also a system that incorporates a system that automatically recovers when the overcurrent is eliminated.

[0005]

However, in the conventional distribution board, the remote control relay and the control means constituting the demand control device are constructed as separate units.
With such a configuration, since the storage space for each unit is formed in the box of the distribution board, a large storage space is required, and the size of the distribution board becomes large. If the distribution board size is not changed, it is necessary to reduce the number of branch circuits.

In addition, in the structure in which the two units of the remote control relay and the control means are housed, the existing box for the distribution board cannot be applied as it is in most cases. Various modifications were needed.

The present invention has been made in view of the above circumstances, and a first object thereof is to make effective use of an existing box for a distribution board, which makes it easy to perform without increasing the size or extra processing. In addition, it is to provide a distribution board with a demand control function at low cost, and a second object is to provide a compact demand control device that can be suitably installed on such a ready-made distribution board. To provide.

[0008]

The invention according to claim 1 achieves the first object, and in the distribution board having a spare space in a box accommodating a main breaker and a branch breaker, A demand control device is installed in the space to perform power suppression control for a less important load when an overcurrent of a set value or more is detected.This demand control device installs circuit components on a multilayer circuit board. A priority setting control means and a contact switching remote control relay controlled by the control means,
It is characterized in that the units are housed in parallel in the same case as one unit.

According to a second aspect of the present invention, the second object is achieved. In a demand control device for performing power suppression control on a less important load when an overcurrent of a set value or more is detected, a circuit component is provided. And a remote control relay for switching contacts, which is controlled by this control means, are stored in a single case in a parallel arrangement. It is characterized by being done.

[0010]

In general, a box of a distribution board for a house is provided with a spare space for attaching an auxiliary device such as a switch for drawing in a power supply of another system, a timer, or a buzzer.

According to the first aspect of the present invention, the priority setting control means, in which the circuit components are installed on the circuit board having a multilayer structure, and the contact switching remote control relay controlled by the control means are provided. Since the demand control devices, which are stored in parallel in the same case as one unit, are installed in the spare space of the box, it is possible to effectively use the existing distribution box to make it larger or extra. It becomes possible to provide a distribution board with a demand control function easily and at low cost without the need for special processing.

According to a second aspect of the present invention, there is provided a priority setting control means having circuit components installed on a circuit board having a multi-layer structure, and a contact switching remote control relay controlled by the control means. Since the demand control device has a compact structure by storing it as a single unit in a parallel arrangement in the same case, it is suitable to install it on a ready-made distribution board by using the spare space in the box. You will be able to do it.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a distribution board, and FIGS. 2 to 4 show a demand control device installed in the distribution board.

As shown in FIG. 1, a distribution board 1 has a horizontally long box 1A, and a trunk breaker 2 and a branch breaker 3 are accommodated in parallel to each other at a substantially central position in the box 1A. A limiter space 4 for installing an ampere breaker or the like is formed on the left end side of the box 1A, for example, and a spare space 5 for installing auxiliary equipment is formed on the right end side. A demand control device 6 is installed in the spare space 5 to perform power suppression control for a load of low importance when an overcurrent of a set value or more is detected.

As shown in FIGS. 2 and 3, the demand control device 6 includes a remote control relay in a vertically long rectangular box-shaped case 7 fixedly supported by a back plate portion 1a of a box 1A via a support tool 10a. 8 and the control means 9 and the like are housed as one unit in a vertically arranged parallel arrangement. The remote control relay 8 is configured to have a relay body that turns on / off the main contacts corresponding to a plurality of loads, an auxiliary contact that switches the power supply circuit in conjunction with the main contacts, and the like. It is located in. Further, the control means 9 is for opening the contact to a less important load when an overcurrent of a set value or more is detected, and the control circuit component is divided into a circuit board 11 having a multilayer structure, for example, a three-layer structure. And is installed in the upper part of the case 7.

A transparent or semi-transparent (for example, acrylic resin) display panel 12 corresponding to the circuit board 11 is provided on the upper portion of the front side of the case 7, and the display panel 12 and its upper and lower portions are provided. Parts such as terminals, switches, and display tools are provided so as not to project from the surface of the display panel 12.

These parts include, for example, a home control terminal 13 connected to an air conditioner, an input terminal 14 of a zero phase converter (CT), a power supply terminal 15 (AC10).
0V), current value setting switch 16 (for setting the current value when the unit operates; for example, when setting to 30A for a 50A contract), load recovery time setting switch 17, order setting switch 18, lighting when the contacts are open LED 19 as a display tool, a segment display section 20 for displaying a used current or a set current, and an error display lamp 2 for indicating a setting error, for example, when the flash orders are the same.
1. A slide switch 22 for switching the current detection method (switching according to the region), a connection terminal 23 for connecting the remote control relay 8 and the branch circuit, and the like are included.

As shown in FIG. 4, the display panel 12 is provided with a hemispherical recess 24 on the inner surface corresponding to the light emitting display portion of the LED 19.

According to this embodiment having the above configuration, the remote control relay 8 constituting the demand control device 6
Since the control unit 9 and the control unit 9 are configured as one unit and are installed in parallel in the same case 7, they can be easily installed in a relatively small spare space formed in the box of the existing distribution board. Is possible. In particular, in the present embodiment, the circuit parts of the control means 9 are separately provided on the circuit board 11 having a multi-layer structure, so that the control means 9 can be made compact, and thereby the remote control relay 8 can be arranged in parallel. It becomes possible to obtain a large space-saving effect. That is, unlike the prior art, a large storage space is not required, and there is no need to increase the size of the distribution board or reduce the number of branch circuits.

Further, in the above-described embodiment, the components such as the switch and the LED arranged on the front surface of the demand control device 6 do not protrude from the surface of the display panel 12. Therefore, conventionally, when a switch, an LED, or the like protrudes from the surface of the display panel and is accidentally touched, the switch or the like is damaged, or the set contents are changed. In the above-mentioned embodiment, since the protrusions such as switches are lower than the panel surface, it is possible to protect the switch buttons and prevent unnecessary operations.

Further, in the above embodiment, a hemispherical recess 24 is provided on the inner surface corresponding to the light emitting display portion of the LED 19. Therefore, conventionally, by exposing the LED itself from the panel or by sticking a flat plate or name plate (sheets) on the upper surface of the LED, the LED may be damaged due to contact or the like, the light emission range may be narrowed, or the flat plate or sheet. In the case of the type, there is a problem that the light is diffused to make it difficult to see the display, and the display position is likely to be displaced. However, according to the above-described embodiment, the hemispherical concave portion 24 is formed in the display panel. With the provision of the lens effect, the display is easier to see, and the LED surface is covered by the panel, so the protection is sure. In addition, L in the recess 24
If the ED is inserted, a great advantage in practical use can be obtained, such as a function for positioning.

[0023]

As described above, according to the first aspect of the present invention, the priority setting control means, in which the circuit components are installed on the circuit board having the multilayer structure, and the contact switching controlled by the control means. Since the demand control device, which houses the remote control relays for the power supply in a single unit in parallel in the same case, is installed in the spare space of the box, the existing distribution box can be effectively used. It is possible to provide a distribution board with a demand control function easily and at low cost by utilizing it without the need for upsizing and extra processing.

According to the second aspect of the present invention, there are provided a priority setting control means in which circuit components are installed on a circuit board having a multilayer structure, and a contact switching remote control relay controlled by the control means. Since the demand control device has a compact structure by storing it as a single unit in a parallel arrangement in the same case, it is suitable to install it on a ready-made distribution board by using the spare space in the box. You will be able to do it.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a switchboard according to the present invention.

FIG. 2 is a front view showing a demand control device installed in the switchboard of FIG. 1 with a part thereof omitted.

FIG. 3 is a side sectional view of FIG.

FIG. 4 is a sectional view showing a part of FIG. 3 in an enlarged manner.

[Explanation of symbols]

 1 Distribution board 1 A box 2 Main breaker 3 Branch breaker 5 Spare space 6 Demand control device 7 Case 8 Remote control relay 9 Control means 11 Circuit board

Claims (2)

[Claims] 1. A power distribution control panel in which a spare space is provided in a box accommodating a main breaker and a branch breaker, and power suppression control is performed on a load of low importance when an overcurrent of a preset value or more is detected in the spare space. A demand control device for controlling the priority is provided. The demand control device includes a control unit for setting priority, which is a circuit component installed on a circuit board having a multilayer structure, and a remote control for switching contacts, which is controlled by the control unit. A distribution board characterized in that a relay and a unit are housed in the same case in a parallel arrangement. 2. A demand control device for performing power suppression control on a load of low importance when an overcurrent of a set value or more is detected, and a circuit component is installed on a circuit board having a multilayer structure for priority setting. A demand control device characterized in that a control means and a remote control relay for switching contacts which are controlled by the control means are housed as one unit in a parallel arrangement in the same case.