JPH05199634A - Loading indication bus duct - Google Patents

Abstract

PURPOSE:To provide a loading indication bus duct in which conducting state and no-voltage state of a bus duct path can be visually confirmed. CONSTITUTION:A voltage detecting section 3 for detecting whether a bus conductor 2 is conducting or not is disposed in a duct housing 1 and a loading indicating section 4 for indicating the conducting state or no-voltage state of bus duct is disposed on the outer wall face of the duct housing 1. Application or non-application of voltage onto the bus conductor 2 is detected and indicated on the outer surface of the duct housing 1.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a charge indicating bus duct.

[0002]

2. Description of the Related Art There are 20 bus ducts (bus duct electric circuits).
It is used for 0V and 400V power distribution circuits,
Generally, it has a structure in which a plurality of bus bar conductors are housed in a steel duct housing.

Conventional examples of such a bus duct include, for example, Japanese Utility Model Laid-Open No. 56-102923 and Japanese Utility Model Publication 45-2.
Japanese Patent No. 4665 and Japanese Utility Model Publication No. 54-30638 are known.

[0004]

However, since the bus duct of the above-mentioned example has a structure in which the bus conductor is housed in the duct housing, it is excellent in terms of electrical safety and the like. However, it was not possible to confirm from the outside of the duct housing whether or not the bus bar conductor was in the energized state (voltage applied state). In this case,
A method of removing the cover of the connecting portion interposed in a part of the duct housing and detecting whether or not a voltage is applied to the bus bar conductor with, for example, a voltage detector or a tester can be considered.
It is not preferable in that it requires labor to remove the cover and may cause trouble due to loss of safety.In addition, if there are many bus duct lines, which line is in the energized state or power failure A great deal of effort is required to detect whether or not there is a state.

The present invention has been made in view of the above circumstances, and it is possible to easily and surely check whether the bus duct electric path is in the energized state or in the no-voltage state simply by visual inspection.

[0006]

A voltage detection unit for detecting whether or not a bus conductor is energized is arranged inside a duct housing, and an outer wall surface of the duct housing is connected to the voltage detection unit and connected to the bus duct. The charging display bus duct has a structure in which a charging display unit for displaying a current-carrying state or a no-voltage state is provided.

[0007]

The potential difference between the busbar conductor and the ground is detected by the voltage detecting section, and the detection signal of the energized state or the no-voltage state in this case is transmitted to the charging display section to display the energized state or the no-voltage state of the bus duct. Is performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the charge display bus duct according to the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 1 is a duct housing, 1a is an upper cover, 1b is a lower cover, 1c is a fastener, 2 is a busbar conductor, 3 is a voltage detection unit, 4 is a charge display unit,
Reference numeral 5 is a connecting portion.

The duct housing 1 is arranged so as to surround a plurality of bus bar conductors 2, and an upper cover 1a and a lower cover 1b are provided in the connecting portion 5 so that upper and lower portions thereof can be opened. It is detachably attached by fasteners 1c such as bolts and nuts. FIG. 1 shows a state in which the upper cover 1a and the lower cover 1b are removed.

As the voltage detecting section 3, a unit having a function of detecting a potential difference from the duct housing 1 in a non-contact state in which the voltage detecting section 3 is brought close to the bus bar conductor 2 is applied. As the device having such a function, the above-mentioned voltage detector or neon lamp is suitable.

In the example shown in FIG. 1, the charge display section 4 is arranged on the outer wall surfaces of the upper cover 1a and the lower cover 1b of the duct housing 1 so as to face the outside. When the voltage detection unit 3 has a light emitting unit such as a neon lamp, the charge display unit 4 uses the light emitting unit, and there is no light emitting unit and only the electric signal is output from the voltage detection unit 3. In this case, the output electric signal is used to turn on or display a light emitting diode, a liquid crystal, a minute lamp or the like.

Further, in the charge display section 4, characters such as "currently flowing" and "no voltage" are written on the surfaces of the upper cover 1a and the lower cover 1b, and the character display and the lamp display are shown. And the color of the lamp, etc.
"Red" means that the power is on, "green" that means no voltage
And the like can be appropriately selected or combined.

In the charged display bus duct having such a structure, the upper cover 1a and the lower cover 1b to which the voltage detection unit 3 and the charged display unit 4 are attached in advance are assembled to the duct housing 1 as shown by the chain line in FIG. The connection portion 5 is sealed by being integrated by the fastener 1c.

Next, when the bus duct is energized, it is determined whether or not a voltage is applied to the bus conductor 2 by detecting the potential difference between the bus conductor 2 and the ground (the entire duct housing 1 has the same potential as the ground). The detection is performed by the unit 3. In this case, the detection signal of the energized state or the no-voltage state by the voltage detection section 3 is transmitted to the charging display section 4, and the charging display section 4 displays the energized state or the no-voltage state, so that the bus duct circuit is energized. Whether it is in the state or in the non-voltage state can be easily confirmed without visually touching the duct housing 1 only by visually observing the charge display portion 4 of the upper cover 1a or the lower cover 1b.

[0016]

According to the charged display bus duct of the present invention, the voltage detecting portion for detecting whether or not the bus conductor is in the energized state is arranged inside the duct housing, and the voltage detecting portion is provided on the outer wall surface of the duct housing. Is connected to the bus duct, and a charging display section for displaying the energized state or the non-voltage state of the bus duct is arranged, the voltage applied to the bus conductor is detected and displayed on the outer surface of the duct housing. It is possible to easily and surely confirm whether the bus duct electric path is in the energized state or in the non-voltage state only by visually observing. Further, since it is not necessary to expose the bus bar conductor, trouble can be prevented and safety in maintenance and inspection work can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a charge display bus duct according to the present invention.

[Explanation of symbols]

 1 Duct Housing 1a Upper Cover 1b Lower Cover 1c Fastener 2 Bus Bar Conductor 3 Voltage Detector 4 Charge Indicator 5 Connection

Claims (1)

[Claims] 1. A bus duct in which a bus conductor (2) is housed in a duct housing (1), a voltage detection unit (3) for detecting whether or not the bus conductor is energized inside the duct housing. And a charge display bus duct connected to the voltage detection unit and provided on the outer wall surface of the duct housing, the charge display unit (4) displaying the energized state or no-voltage state of the bus duct.