JP3383778B2 - How to build a bypass circuit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 6.6KV high-voltage power distribution line for performing emergency power transmission by connecting a primary side and a secondary side of a high-voltage cutout with a bypass when a power failure occurs due to a failure of the high-voltage cutout. The present invention relates to a method of constructing a bypass circuit of

[0002]

2. Description of the Related Art Conventionally, as disclosed in, for example, Japanese Utility Model Publication No. 8-2930, when a wire tightening piece is tightened with an insulation operating rod, a needle electrode pierces the wire insulator and reaches a conductor. Using a needle electrode clamp a with a structure
As shown in FIG. 3, a needle electrode clamp a to which a high voltage bypass cable e is attached is connected to a high voltage cut-out line b on the power source side (hereinafter referred to as PD line) c and a transformer primary side lead line d. Since I was connected to and built a bypass circuit,
There were the following drawbacks and problems. Since a heavy high-voltage bypass cable e is connected to the needle electrode clamp a, the needle electrode clamp a may be disengaged from the PD line c due to its weight. As shown in FIG. 4, there is a drawback in that the temporary support support g must be temporarily supported so that the needle electrode clamp a is not loaded. When the needle electrode clamp a is first attached to the transformer primary lead wire d, the work must be interrupted and another needle electrode clamp a temporarily supported at another place must be obtained. However, there was a drawback that the installation work could not be performed continuously. When the needle electrode clamp a is attached to the PD wire c or the transformer primary side lead wire d under a cloudy or dusk work environment, the needle electrode clamp a and the PD line c or the transformer primary side lead are installed. Since the line d has the same color, it is difficult to distinguish between the two, and there is a concern that it may be surely connected.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the drawbacks and problems described in the prior art. It requires no temporary support, can be mounted continuously, and can be overcast or dusk. It is an object of the present invention to provide a method of constructing a bypass circuit that can be easily distinguished from an electric wire even at times.

[0004]

According to the method for constructing a bypass circuit of the present invention, another needle electrode clamp is temporarily supported on a support rod attached to the back surface of the needle electrode clamp, and a charging section metal fitting of the needle electrode clamp is provided. After electrically connecting the charging section metal fitting of the other needle electrode clamp with a short PD wire, the needle electrode clamp is operated with an insulating operation rod to transform the primary side reel of the transformer.
Attached to the lead wire, the insulation operating rod is removed from the needle electrode clamp, attached to the other needle electrode clamp, removed from the support rod that was temporarily supporting the other needle electrode clamp, and By operating the operating rod to attach the other needle electrode clamp to the PD line on the power supply side of the high-voltage cutout, and then removing the insulating operating rod from the other needle electrode clamp to bypass the high-voltage cutout. It is characterized by constructing a circuit, wherein the needle electrode clamp and the other needle electrode clamp are made of an insulating material except for the needle electrode portion and the charging portion metal fitting, and the insulating material and the charging portion metal fitting are The color of the insulating cover to be covered is composed of a bright color which can be easily distinguished from the color of the PD line even in cloudy weather or at dusk.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the wire tightening piece 1 is tightened by an insulating operating rod f. Then, in the needle electrode clamp a having a structure in which the needle electrode 2 pierces through the insulator of the electric wire and reaches the conductor, another needle electrode clamp a ′ is temporarily provided on the back surface of the needle electrode clamp a as shown in FIG. A supporting rod 3 for supporting is attached.

A PD wire insertion hole 5 is provided in the charging portion metal fitting 4 of the needle electrode clamp a, and the conductor of the PD wire c inserted in the PD wire insertion hole 5 is fastened with a screw 6 to fix the charging portion metal fitting of the needle electrode clamp a. 4 can be electrically connected.

The needle electrode clamps a and a'are made of an insulating material such as polyacetal except the needle electrode 2 part and the charging part metal fitting 4, and polyethylene, vinyl, etc. for covering the insulating material and the charging part metal fitting 4 are used. The color of the insulating cover 7 made of plastic is a bright color such as yellow that can be easily distinguished from the color of the PD line even in cloudy weather or at dusk. A fluorescent paint or the like is applied to the surface of the insulating cover 7.

In practice, as shown in FIG. 3, another needle electrode clamp a'is temporarily supported on the support rod 3 of the needle electrode clamp a, and the needle electrode clamp a and another needle electrode clamp a'are provided.
In the PD line insertion hole 5 of P, a short P of several tens of centimeters to 1 m
Strip the insulator at the tip of the D line c, insert the exposed conductor part, tighten with the screw 6, and electrically connect the needle electrode clamp a and the charging part metal fitting 4 of another needle electrode clamp a ′. deep. First, the needle electrode clamp a is operated by the insulation operation rod f, attached to the transformer primary side lead wire d, then the insulation operation rod f is removed from the needle electrode clamp a, and attached to another needle electrode clamp a ′. , Another needle electrode clamp a'is removed from the support rod 3, and is attached to the power source side PD line c of the high-voltage cutout b, and then the insulating operation rod f is removed from the other needle electrode clamp a '. As a result, a bypass circuit that bypasses the high-voltage cutout b is constructed. In this example, the case of the box-shaped high pressure cutout b has been described, but in the case of the cylindrical high pressure cutout, the bypass circuit can be constructed by the same procedure as described above.

[0009]

Since the present invention is constructed as described above, it has the following effects. Since the work of attaching the needle electrode clamp can be performed continuously, the work time can be shortened.
Since it is unnecessary to attach the temporary supporting support equipment as in the prior art, the burden on the operator is reduced. Temporary support
It is economical because it does not require any equipment. Since the needle electrode clamp and the electric wire can be easily discriminated from each other by visual inspection, the installation work in cloudy weather or at dusk becomes easy. Since the main parts except the needle electrode part and the charging part metal fitting are made of an insulating material and the charging part metal fitting is covered with an insulating cover, it is not necessary to protect the needle electrode clamp mounting part with an insulating sheet or the like.

[Brief description of drawings]

FIG. 1 is a partially cut side view showing an example of implementation.

FIG. 2 is a rear view of FIG.

FIG. 3 is an explanatory diagram for explaining a mounting procedure.

FIG. 4 is an explanatory diagram showing a conventional embodiment.

[Explanation of symbols]

1 Electric wire tightening piece 2-needle electrode 3 support rods 4 Charging part bracket 5 PD line insertion hole 6 screws 7 Insulation cover a, a'needle electrode clamp b High pressure cutout c High-voltage cutout power source PD line d Transformer side lead wire e High-voltage bypass cable f Insulated operating rod g Temporary support

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Harada 4-33 Komachi, Naka-ku, Hiroshima City, Hiroshima Prefecture Chugoku Electric Power Co., Inc. (72) Inventor Manabu Matsuo 4-33 Komachi, Naka-ku, Hiroshima City, Hiroshima Prefecture Co., Ltd. (72) Inventor Akihiro Sakamoto 4-33 Komachi, Naka-ku, Hiroshima City, Hiroshima Prefecture Chugoku Electric Power Co., Inc. ) Reference Japanese Unexamined Patent Publication No. 10-174234 (JP, A) Actual Opening 2-18277 (JP, U) Actual Opening 7-27221 (JP, U) Actual Opening Sho 62-21708 (JP, U) Actual Opening Sho 48-90131 (JP, U) Jpn. 8-2930 (JP, Y2) Jpn. 29-11751 (JP, Y1) Utility model registration 3008742 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02G 1/02

Claims (2)

(57) [Claims] 1. A needle bar clamp attached to the back surface of a needle electrode clamp temporarily supports another needle electrode clamp, and a charging section metal fitting of the needle electrode clamp and a charging section metal fitting of the other needle electrode clamp are provided. After electrically connecting with a short PD wire, the needle electrode clamp is operated with an insulating operation rod and attached to the transformer primary side lead wire, and then the insulating operation rod is removed from the needle electrode clamp, The needle electrode clamp is attached to another needle electrode clamp, the other needle electrode clamp is detached from the support rod that was temporarily supported, and the insulating operation rod is operated to attach the other needle electrode clamp to the power source side PD of the high-voltage cutout. After mounting on a wire, the insulation operating rod is removed from the other needle electrode clamp to construct a bypass circuit that bypasses the high-voltage cutout. 2. A needle electrode clamp and another needle electrode clamp are made of an insulating material except for the needle electrode portion and the charging portion metal fitting,
2. The color of the insulating cover covering the insulating material and the metal fitting of the charging section is a bright color that can be easily distinguished from the color of the PD line even in cloudy weather or at dusk. How to build a bypass circuit