JPH06165319A - Control center - Google Patents

Abstract

PURPOSE:To prevent control circuit wires from being affected by noises from the main circuit wires. CONSTITUTION:A main circuit wire 10 and control circuit wire 12 of a unit 3 are laid out on both sides of the unit 3 separately. A wiring duct 21c extending vertically is provided for part of the side of a box 21. The control circuit wire 12 is housed in the wiring duct 21c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control center in which units are stored in multiple stages.

[0002]

2. Description of the Related Art A control center divides a box body into multiple stages to form a plurality of unit chambers, and main circuit devices such as circuit breakers and electromagnetic contactors and control circuit devices such as thermal relays and auxiliary relays are housed in these unit chambers. Units that are grouped together for each unit circuit are stored so that they can be pulled out.

3 and 4 show a conventional control center, FIG. 3 is a front view of the control center with a door opened, and FIG. 4 is a sectional view taken along the line BB of FIG. The inside of the box 1 is partitioned by a partition plate 1a to form a multi-stage unit chamber 2, and a unit 3 is housed in the unit chamber 2 so that it can be freely taken in and out. Unit 3 is circuit breaker 4,
It is configured by incorporating main circuit devices such as the electromagnetic contactor 5 and control circuit devices such as the thermal relay and the auxiliary relay 6. A power supply side disconnecting section 7 is provided on the back surface of the unit 3, and when the power supply side disconnecting section 7 contacts the vertical bus bar 8, the main circuit device of the unit 3 is energized, and the unit 3
Power is supplied to the load (not shown) from the main circuit device via the load side disconnector 9 and the main circuit electric wire 10.

Further, the electric wire connected to the control circuit device of the unit 3 is connected to the connecting plug 11, and the connecting circuit 11 is connected to the control circuit electric wire 12 wired from the general terminal block in the terminal chamber (not shown). . The main circuit electric wire 10 and the control circuit electric wire 12 are bundled and wired in a wiring processing chamber 1b provided on the side of the unit chamber 2 in the box 1.

[0005]

By the way, in recent years, the transmission center and the electronic equipment have been frequently used in the control center, and these transmission equipment and the electronic equipment have a drawback that they are vulnerable to noise. Therefore, in the control center having the above-described structure, noise of the main circuit electric wire 10 is induced in the control circuit electric wire 12, which causes a problem that the transmission device and the electronic device malfunction.

The present invention has been made in order to eliminate the above-mentioned problems, and an object of the present invention is to provide a control center capable of preventing a noise trouble of a control circuit electric wire which is weak against noise.

[0007]

In order to achieve the above object, the present invention provides a unit in which a box body is divided into multiple stages to form a large number of unit chambers, each unit chamber including a main circuit device and a control circuit device. In the stored control center, the main circuit electric wire and the control circuit electric wire of the unit are separately wired on both sides of the unit. Also, a wiring duct extending along the height direction is provided on a part of the side surface of the box body, and the control circuit wiring is housed in the wiring duct.

[0008]

[Function] Since the control circuit electric wire and the main circuit electric wire are separated and wired by sandwiching the unit, the control circuit electric wire is melted from the main circuit electric wire and further shielded by the wiring duct, so that the main circuit electric wire Noise will not affect the control circuit wires.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a front view of the control center with the door open, and FIG. 2 is a sectional view taken along the line AA of FIG. The inside of the box body 21 is partitioned by a partition plate 21a to form a multi-stage unit chamber 22.
The unit 3 is housed therein so that it can be freely taken in and out. The unit 3 is constructed by incorporating main circuit devices such as a circuit breaker 4 and an electromagnetic contactor 5 and control circuit devices such as a thermal relay and an auxiliary relay 6 in the same manner as in the conventional case. When 7 contacts the vertical bus bar 8, the main circuit device of the unit 3 is energized, and power is supplied from the main circuit device of the unit 3 to the load (not shown) via the load side disconnector 9 and the main circuit electric wire 10. .

The main circuit electric wire 10 is wired through the wiring processing chamber 21b formed on the right side of the unit 3 in the figure as in the conventional case, but the control circuit electric wire 12 is located on the left side of the unit 3 in the figure and is located in the box body 21. Wiring is performed through the inside of the wiring duct 21c formed on the side surface and extending along the height direction. The wiring duct 21c is formed by denting a part of the side surface of the box body 21, and each unit chamber 2 is formed on the wall of the wiring duct 21c.
An opening portion 21d through which the control circuit electric wire 12 is passed is formed corresponding to 2.

The control circuit wire 12 is drawn out from a general terminal block 24 in a terminal chamber 23 to which a control cable from a transmission device or an electronic device is connected, passes through a wiring duct 21c,
It is connected to the connection plug 11 of each unit 3 through the opening 21d.

Therefore, with the above-mentioned structure, the main circuit electric wire 10 and the control circuit electric wire 12 are wired separately by sandwiching the unit 3, so that the control circuit electric wire 12 is connected to the main circuit electric wire 1.
Since it is separated from 0, the noise of the main circuit electric wire 10 does not affect the control circuit electric wire 12. In this case, since the control circuit electric wire 12 is shielded by the wall of the wiring duct 21c, the influence of noise of the main circuit electric wire 10 on the control circuit electric wire 12 is surely eliminated, and the transmission device and the electronic device may be disturbed by noise. There is no.

[0013]

As described above, according to the control center of the present invention, the main circuit electric wire and the control circuit electric wire of the unit are drawn out to both sides of the unit, and the control circuit wiring is housed in the wiring duct. The circuit wire is not affected by the noise of the main circuit wire, and the malfunction of the transmission device or the electronic device can be prevented.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a front view showing a main part of a conventional control center.

FIG. 4 is a sectional view taken along the line BB of FIG.

[Explanation of symbols]

3 is a unit, 4 is a circuit breaker, 5 is an electromagnetic contactor, 6 is an auxiliary contactor, 7 is a power source side disconnection part, 8 is a vertical busbar, 9 is a load side disconnection part, 10 is a main circuit electric wire, 11 is a connection plug , 12 is a control circuit wiring, 21 is a box, 21a is a partition plate, 21b is a wiring processing chamber, 21c is a wiring duct, 21d is an opening, and 23
Is a terminal chamber, and 24 is a general terminal block.

Claims (2)

[Claims] 1. A control center in which a box body is divided into multiple stages to form a number of unit chambers, and each unit chamber accommodates a unit equipped with a main circuit device and a control circuit device. A control center in which circuit wires are separately provided on both sides of the unit. 2. The control center according to claim 1, wherein a wiring duct extending along a height direction is provided on a part of a side surface of the box body, and the control circuit wiring is housed in the wiring duct.