JPH05207618A - Displaying apparatus for current-carrying state to distribution board - Google Patents

Abstract

PURPOSE:To make it possible to confirm the current carrying state of a distribution board from a position away from the distribution wires without a need for any maintenance personnel his body to approach the distribution board, and at the same time, to exactly grasp the current carrying through state of a distribution wire as desired even when many numbers of distribution wires are installed on the distribution board. CONSTITUTION:An apparatus is to indicate the current carrying through covered wires 1 housed in the housing of a distribution board. The apparatus comprises an electromotive unit 31 which generates an induction current when the covered wires 1 are charged, and an light emitting unit 32 which indicates a state that a current is flowing through the covered wires.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for displaying the energized state of a coated distribution line housed in a distribution board such as a power receiving and transforming board or a distribution board.

[0002]

2. Description of the Related Art Conventionally, in a building, such as a building or factory, which consumes a large amount of power, a high voltage current drawn from a high voltage line is transformed and supplied to various places in the building. And a distribution board such as a distribution board, and a plurality of covered distribution lines, circuit breakers, breakers, and other electrical equipment are usually housed inside the housing of the distribution board. Generally, when performing maintenance and inspection of the switchboard, check that the covered distribution line is de-energized.When checking the energization state of the distribution line, for example, when it is energized, check it. Use a voltage detector that turns on the lamp of the electric appliance or makes a speaker emit an alarm sound.Maintenance personnel hold the detector to bring it close to the distribution line or make contact with it from above the sheath to check the energized state. Was going on.

[0003]

However, in the above-mentioned conventional confirmation method, since the maintenance personnel need to approach the distribution line for confirmation, it is impossible to confirm the energized state at a position distant from the distribution line. For example, there is a problem that the maintenance staff may get an electric shock because the maintenance staff touches a portion where the core wire is exposed from the coating of the distribution line. further,
To check the energization status when the number of distribution lines accommodated in the switchboard is large and the distribution lines are accommodated in the switchboard in two rows, the front side and the back side, or in an array of more than that. When the voltage detector is brought into contact with the desired distribution line from above or from above,
Even if the desired distribution line is in a non-energized state, the distribution line in the front or in the back may be energized, so the voltage detector may show a reaction when the energized state. There was a problem that it was difficult to grasp.

The present invention has been made in view of the above circumstances, and maintenance personnel can confirm the energized state at a position away from the distribution line without bringing their bodies close to the distribution line, and a large number of them can be arranged in the distribution board. It is an object of the present invention to provide a power distribution state display device for a switchboard, which can accurately grasp a power distribution state of a desired distribution line even when the distribution line is stored.

[0005]

In order to achieve the above object, the present invention is a device for displaying the energized state of a coated distribution line housed inside a casing of a switchboard, which comprises: It is characterized by comprising an electromotive section that generates an induced current when energized, and a display section that displays that the coated distribution line is in an energized state by the induced current generated by the electromotive section. Further, the present invention is characterized in that a plurality of the covered distribution lines are housed inside a casing of a switchboard, and the electromotive section and the display section are provided in a number of sets corresponding to each covered distribution line. Furthermore, the present invention is characterized in that the display section is made of a light emitting body that emits light by the induced current.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 (a) and 1 (b) are schematic views showing a schematic configuration of a power distribution state display device for a switchboard according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a covered distribution line that forms a part of electric wiring to an outlet provided in various places in a building such as a building, and is not shown together with electric devices such as a transformer, a circuit breaker, and a breaker. 1. A plurality of covered distribution lines 1 are housed in the casing of the switchboard, and the covered distribution lines 1 are arranged at intervals in the left-right and front-back directions in FIG. A low voltage current is applied to each covered distribution line 1 when the breaker and the breaker are “ON”, and the outer periphery of the covered distribution line 1 is, as shown in FIG. Each of the energization state display devices 3 is attached via the clamps 2 to which is connected.

Each energization state display device 3 has an electromotive section 31 for generating an induced current by a current flowing through the coated energizing wire 1.
And a light emitting portion 32 (corresponding to a display portion) such as a lamp that emits light by an induced current generated in the electromotive portion 31, and the light emitting portion 32 is provided, for example, on the front surface of a casing (not shown). When the opening / closing lid (not shown) is opened, it is arranged at a position visible from the front side of the housing. In addition, the energized state display device 3 is provided with an adjacent covered wiring line so as not to malfunction due to interference due to energization of the covered distribution line 1 located in front, rear, left and right of the covered distribution line 1 corresponding to the energized state display device 3. It is arranged at a sufficient distance from the electric wire 1.

According to the current-carrying state display device 3 of this embodiment having such a configuration, when each coated current-carrying wire 1 is brought into the current-carrying state, the electromotive section 3 is caused by the current flowing in the coated current-carrying wire 1.
1 causes an induced current, and the induced current causes the light emitting section 32 to
On the other hand, when each coated conducting wire 1 is in the non-conducting state, the induction current is not generated in the electromotive section 31 and the light emitting section 3
2 turns off the light, and the maintenance staff visually confirms the lighting and extinguishing states of the light emitting portion 32, and confirms whether or not the desired covered energizing wire 1 is energized.

As described above, the current-carrying state display device 3 of this embodiment is used.
Then, depending on the energized state of the corresponding covered distribution line 1, the light emitting section 32 arranged at a position visible when the opening / closing lid of the switchboard is opened turns on and off, so that the energized state can be confirmed. It is possible to easily confirm the energized state of the covered distribution line 1 without approaching or touching the covered distribution line 1, and it is possible to prevent the occurrence of insufficient accidents such as electric shock. Also,
The other power distribution display devices 3 on the front, rear, left, and right sides do not malfunction due to interference from other power distribution display lines 1 adjacent to the power distribution display device 3 corresponding to the power distribution state display devices 3. Since it is arranged at a distance from 1, even when a large number of distribution lines are accommodated in the switchboard, it is possible to accurately display the energized state of the corresponding covered distribution line 1, and maintenance personnel can It is possible to accurately grasp the energization state of each covered distribution line 1.

In the above embodiment, the case where the energization state of the covered distribution line 1 to which the low voltage current is energized is displayed on the energization state display device 3 has been described. However, as shown in FIG. 2, a high voltage current is energized. When the energized state display device 3 displays the energized state of the covered distribution line 11, the energized state display device 3 is not directly attached to the covered distribution line 11 but is placed close to the covered distribution line 11 in the switchboard. The energization state display device 3 may be installed on a frame (not shown) or the like so as to be close to the covered distribution wire 11, and the energization state display device 3 may be directly grounded by the ground wire 33.

Further, in the present embodiment, the case where the light emitting portion 32 such as a lamp is used as the display portion has been described. However, for example, according to the induced current generated in the electromotive portion 31, the covered distribution line 1,
It may be possible to use a display device for displaying the energized state and the de-energized state of 11 by different lamps or by displaying characters or symbols. In order to make it easier to see the lighting and extinguishing states of the light emitting unit 32, A transparent window is provided on the opening / closing lid (not shown) so that the lighting or extinguishing state of the light emitting section 32 can be directly seen from the outside of the cabinet of the switchboard through the transparent window, or the electromotive section 3
1 and the light emitting portion 32 may be separated and the light emitting portion 32 may be attached to the outer surface of the opening / closing lid.

[0012]

As described above, according to the present invention, an electromotive section that generates an induced current when a coated distribution line accommodated in the casing of a switchboard is energized, and an induction section that is generated by the electromotive section. Since it is configured to have a display section that displays that the covered distribution line is in the energized state by the electric current, maintenance personnel can confirm the energized state at a position away from the distribution line without bringing the body close to the distribution line. In addition, even when a large number of distribution lines are accommodated in the switchboard, it is possible to accurately grasp the energized state of a desired distribution line.

[Brief description of drawings]

1A and 1B are schematic views showing a schematic configuration of a power distribution state display device for a switchboard according to an embodiment of the present invention, FIG. 1A being a front view and FIG. 1B being a side view.

FIG. 2 is a schematic diagram showing a schematic configuration of a power distribution state display device for a switchboard according to another embodiment of the present invention.

[Explanation of symbols]

 1, 11 Coated distribution line 3 Energized state display device 31 Electromotive section 32 Light emitting section (display section)

Claims (3)

[Claims] 1. A device for displaying a current-carrying state of a coated distribution line housed inside a casing of a switchboard, comprising: an electromotive section that generates an induced current when the coated distribution line is energized; A display unit for displaying that the coated distribution line is in a conductive state by an induced current generated in the section, and a power distribution state display device for a switchboard. 2. A plurality of the covered distribution lines are accommodated inside a casing of a switchboard, and the electromotive section and the display unit are provided in a number of sets corresponding to each covered distribution line. Item 1. A power distribution state display device for a switchboard according to Item 1. 3. The power distribution display device for a switchboard according to claim 1, 2 or 3, wherein the display unit is formed of a light emitting body that emits light by the induced current.