JPH10149851A - Radial grounding conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and quickly reduce earth resistance at a low cost in the electric grounding work execution. SOLUTION: A grounding member is machined into a cylindrical shape, electrode plates 4 are radially fitted, a grounding connection line 2 is fitted to a grounding connecting line fitting terminal board 8, and they are vertically buried in the ground. The inside and outside of a radial grounding conductor main body 1 are compressed and back-filled with a material 3 having a high moisture retaining property, and a ground rod 5 is driven at the center and connected to the grounding connection line of the radial grounding conductor main body 1. The earth resistance value is easily suppressed low.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention provides a grounding construction method for facilitating construction in places where the grounding resistance is unlikely to be low, for example, in mountainous areas or riverbeds, when electrical grounding is required and a low value is required. It is about.

[0002]

2. Description of the Related Art A conventional grounding member is a bar-shaped or plate-shaped member, and the member is buried in a wide range at several places to reduce the grounding resistance.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been studied with the object of minimizing the burial area in a wide area, which is a drawback, and ensuring a perfect ground resistance value.

[0004]

[Means for Solving the Problem] First, in order to lower the value of the grounding resistance, it is necessary to secure a grounding surface. By attaching the electrode plate to the main body, the grounding area is increased even if the main body is small. In order to improve the electrical conductivity of the grounding, moisture has a great effect, so it is best to squeeze both inside and outside of the conductor using a material with excellent moisture retention (such as clay). Was. Also, as a result of the experiment, a radial ground conductor made of a material with good electrical conductivity was vertically embedded by the method described above without directly attaching a ground connection wire to the radial ground conductor, and a ground rod was driven into the center of the conductor to ground resistance. The measurement confirmed that the resistance value was the same even when the ground rod and the radial ground conductor were not in contact.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION An electrode plate (4) is radially mounted on a conductor cylinder (10) to form a radially grounded conductor main body (1), and a ground connection wire terminal block (6) is attached by welding or bolts. The radially grounded conductor body (1) is inserted vertically into a hole excavated in the ground, and the inside and the outside are squeezed with a substance (3) having excellent moisturizing properties, and are buried back to form a state in which it is in close contact with the ground. Also, a grounding rod (5) is driven inside and connected to the radial grounding conductor (1) to form one grounding connection line (2).
Since the present invention is configured as described above, the conductivity between the radially grounded conductor body (1) and the ground is improved.

[0006]

[Embodiment] In electrical work requiring grounding, there is no problem if a ground resistance value below the specified value can be easily obtained. However, it is usually necessary to keep the ground resistance value low in mountainous areas and riverbeds. Is often difficult. For this reason, unexpected expenses were imposed on materials and labor costs in the grounding work, and waste was caused. While thinking that it is not easy to lower the grounding resistance using the current grounding plate and grounding rod, in order to lower the grounding resistance, first look at widening the grounding area and at the same time the grounding effect, Experiments have shown that the effect of the radial pattern on the ground is large. Therefore, in the construction method of the grounding work, the radial grounding conductor (1) is dug deeper than the ground surface so that the radial grounding conductor (1) is buried, and the radial grounding conductor (1) is buried vertically in the ground, and a material having excellent moisture retention inside and outside (3). It was confirmed by the experiment that the radially grounded conductor main body (1) exerts more effects if the area is the same as that of the grounding plate or the like by squeezing and backfilling.

[0007]

The present invention has the following effects since it is configured as described above. Since the conductor with the electrode plate attached radially around the cylinder is buried vertically,
The excavation area is small, and the surroundings are squeezed with a substance having a high moisturizing effect, thereby exhibiting the effect of increasing the electrical conductivity, thereby reducing material costs and labor costs.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conductor tube of the present invention.

FIG. 2 is a sectional view of a use state of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Radial grounding conductor main body 2 Grounding connection line 3 Material excellent in moisture retention 4 Electrode plate 5 Grounding rod 6 Grounding connection line mounting terminal block 7 Ground surface 8 Existing underground 9 Boundary between excavated part and existing underground 10 Conductor cylinder

Claims (2)

[Claims] 1. A radial ground conductor in which a conductor is processed into a cylindrical shape, and a plurality of electrode plates and a ground connection line mounting terminal block are radially welded or closely attached by a method such as a bolt. 2. A radial ground conductor is buried in a hole excavated in the ground, and inside and around the radial ground conductor are squeezed with a substance having a high moisturizing property and conductivity, and a ground rod is provided at the center of the radial ground conductor. A method of improving the grounding effect by electrically integrating the conductor with the radial grounding conductor.