JPH0410287B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in overhead power distribution lines.

Figure 1 shows a typical example of a conventional overhead power distribution line.
That is, the conventional overhead power distribution line usually connects the branch connection part 2 of the high-voltage side overhead cable 1 and the pole transformer 3 installed on the utility pole 8 with the high-voltage underwire 4.
Furthermore, the branch connection part 6 of the low-voltage side overhead cable 5 and the pole transformer 3 are connected by a low-voltage underwire 7. (Refer to Utility Model Publication No. 51-8142.) However, as is clear from Fig. 1, in the overhead distribution line constructed in this way, the use of underwire 4 (or 7) causes I don't like that the wiring becomes too complicated. Further, since the pole transformer 3 and the branch connection section 2 (or 6) are separated from each other, there is a problem in terms of the space occupied as a whole, and for this reason, there have been requests for improvements for some time.

The present invention has been made in view of the above points, and its purpose is to provide a novel overhead power distribution line that can eliminate the drawbacks of the prior art described above and further improve wiring and occupied space. Our goal is to provide the following.

That is, the gist of the present invention is to omit the use of a drop wire and directly connect the branch connection portion of the overhead cable to the pole transformer.

Next, an embodiment of the overhead distribution line of the present invention will be explained with reference to FIGS. 2 and 3 of the attached drawings. FIG. This is an example of direct connection. In addition, 7 is a low-voltage underline, and 8 is a utility pole. Further, FIG. 3 shows an example in which the branch connection part 20 of the high voltage side overhead cable 1 is directly connected to the upper side of the pole transformer 3.

In addition, to further explain the connection part 20 of the high-voltage side overhead cable, this is a cable connection part main body formed by electrically connecting the high-voltage side overhead cables 1, 1 to be connected, as shown in FIGS. 200
and connect one end of itself to the cable connection body 2.
00, and the other end 202 is electrically connected to the cable conductor connecting element 201 of the main body 200.
A branch connection terminal 20 provided to protrude outward from the
3, a pole transformer side pull-out terminal 204 provided on the side wall portion 30 of the pole transformer 3 so as to be lined up with the branch connection terminal 203 and spaced apart from the branch connection terminal 203; Letter-shaped conductive joint 2
05 and an insulating cover 206 covering it, the live wire attaching/detachment element 207 connects both ends of the conductive joint 205 to the branch connection terminal 203 and the pole transformer side extraction terminal 204. It is configured to be detachable.

Therefore, by attaching and detaching the live wire attachment/detachment element 207 to and from the branch connection terminal 203 and the draw-out terminal 204, the branch connection terminal 203 and the draw-out terminal 204 can be connected to each other.
This makes it possible to separate and connect between the four wires in a live line state.

In addition, 208 is a terminal fitting attached to the conductor 100 of the overhead cable 1, 209 is a tube contact, 210 is a stopper, 211 is an insulating cylinder, 212 is an insulating spacer, 213 is a pull-out handle, and 3-pole transformer. It is.

The present invention configured as described above omits the high-voltage underline and directly connects the branch connection part of the high-voltage side overhead cable to the pole-mounted transformer. The upper transformer and each branch connection are placed separately, and the high voltage side overhead cable branch connection and the pole transformer are connected by high voltage underwires, and the low voltage side overhead cable branch connection and the pole transformer are connected. Compared to overhead distribution lines, which are constructed by connecting each section with a low-voltage underwire, the wiring near the pole transformer is greatly simplified, and the overall space occupied by the pole transformer and branch connection is reduced. can be significantly reduced.

Further, the present invention provides a cable connection portion main body 200 in which a branch connection portion of a high voltage side overhead cable is electrically connected to the high voltage side overhead cables 1, 1 to be connected.
and connect one end of itself to the cable connection body 2.
00, and the other end 202 is electrically connected to the cable conductor connecting element 201 of the main body 200.
A branch connection terminal 20 provided to protrude outward from the
3, a pole transformer side pull-out terminal 204 provided on the side wall portion 30 of the pole transformer 3 so as to be lined up with the branch connection terminal 203 and spaced apart from the branch connection terminal 203; Letter-shaped conductive joint 2
05 and an insulating cover 206 covering the conductive joint 205, and a live wire attachment/detachment element 207 which is detachably attached to the branch connection terminal 203 and the pole transformer side extraction terminal 204 at both ends of the conductive joint 205. Therefore, by attaching and detaching the live wire attachment/detachment element 207 to and from the branch connection terminal 203 and the extraction terminal 204, the branch connection terminal 203 and the extraction terminal 204 can be connected to each other.
Extending between them is the pole transformer 3 and the branch connection part 20.
It is possible to achieve the effect that they can be electrically separated and connected very easily in a live wire state.

Incidentally, in the case of the conventional overhead distribution line shown in FIG. electrically separating the connecting parts 2 from each other,
It is also not easy to connect.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a conventional overhead distribution line, Figs. 2 and 3 are explanatory diagrams each showing an embodiment of the overhead distribution line of the present invention, and Figs. 4 and 5 are respectively illustrations of the high voltage of Fig. 2. FIG. 6 is a partially cutaway explanatory diagram of the side overhead cable branch connection section, and is an overall view of the high-voltage side overhead cable branch connection section of FIG. 2 viewed from below. 1: High voltage side overhead cable, 3: Pole transformer,
5: Low voltage side overhead cable, 8: Utility pole, 20: Branch connection, 200: Cable connection main body, 201:
Cable conductor connection element, 203: branch connection terminal,
204: Pole transformer side extraction terminal, 205: Conductive joint, 206: Insulating cover, 207: Live wire attachment/detachment element.

Claims (1)

[Claims] 1. In an overhead distribution line in which a branch connection part of an overhead cable is directly connected to a pole transformer, the branch connection part is connected to a cable connection part main body 200 which is formed by electrically connecting the overhead cables 1, 1 to be connected. , a branch connection terminal 203 having one end thereof electrically connected to the cable conductor connection element 201 of the cable connection section main body 200 and the other end 202 protruding outward from the main body 200;
The branch connection terminal 2 is connected to the side wall 30 of the pole transformer 3.
03 and the branch connection terminal 2.
03, a substantially U-shaped conductive joint 205, and an insulating cover 206 that covers this, and both ends of the conductive joint 205 are connected to branch connection terminals. 203 and a live wire attachment/detachment element 207 detachably attached to the pole transformer side extraction terminal 204.