JPH0451452Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an insulating cover for preventing damage from birds and animals that is attached to the secondary busbar of an outdoor transformer.

<Prior Art> Conventionally, an insulating cover has been attached to the secondary busbar of an outdoor transformer in order to prevent leakage between the three phases due to contact with wild birds, cats, etc. Generally, a notch is formed in this cover. This notch is necessary for grounding during maintenance and inspection work to prevent electric shock to workers. The worker inserts the tip of the grounding rod through the notch and hooks the tip to the busbar to perform grounding.

<Problems to be solved by the invention> However, although this incision is small, with a width of less than 10 cm, it is not desirable from the viewpoint of preventing damage to birds and animals. Also, the busbar is 3m above the ground.
In many cases, the grounding rod is located at a higher altitude than above, and the work involves inserting the tip of the grounding rod from the ground and hooking it to the busbar, so the cut cannot be made very small from the viewpoint of workability.

Therefore, an object of the present invention is to provide an insulating cover that allows easy grounding work from the ground and completely prevents damage from birds and animals.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides an insulating cover for preventing damage from birds and animals that is attached to the secondary side bus bar of an outdoor transformer. , a notch for inserting a grounding rod formed at an appropriate location on the main body, and an opening/closing cover for opening and closing the notch. To provide an insulating cover for preventing damage to birds and animals, characterized in that a recessed part is opened and a notched part is closed in a prone state.

<Function> In the present invention, the notch is closed by the opening/closing cover, so birds and animals cannot come into contact with the bus bar. Furthermore, since the notch is closed in the prone position, in order for a bird or beast to open the cover, it must lift the cover, something that a bird or beast cannot do. On the other hand, when an operator opens the cover, it is sufficient to push the cover up from the ground using a grounding rod, and the operator can easily ground the cover.

<Example> An example of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view of one embodiment in the closed state, and FIG. 2 is a side view of the embodiment in the open state. This insulating cover for preventing damage to birds and animals consists of a main body 1 and a transparent opening/closing cover 2 that opens and closes notches 11 formed at appropriate locations on the main body 1, and both members 1 and 2 are made of synthetic resin.

The main body 1 has an inverted U-shaped cross section and is attached to cover a secondary busbar 3 of an outdoor transformer.
In detail, both lower ends 12, 12 of the inverted U-shape of the main body 1
are curved close to each other, and the locking pin 1 made of synthetic resin is
3 into insertion holes (not shown) made at both lower ends 12, 12 and fixed. The lower part of the main body 1 is projected outward and forms a protrusion 14. Further, although a large number of small holes 15 for heat radiation are formed in the main body 1, this is not necessarily necessary.

The notch 11 is formed by cutting the top surface and both left and right side surfaces of the main body 1, and its width is equal to that of the ground rod 4.
Design as appropriate on the condition that it is larger than the tip of.

The opening/closing cover 2 has an inverted U-shape that is one size larger than the main body 1, and arm plates 21, 21 are attached to the left and right sides. The arm plate 21 is rotatably attached to the main body 1 by a locking pin 22. This locking pin 22 is also inserted into an insertion hole (not shown) made in the main body 1. The opening/closing cover 2 rotates up and down about this locking pin 22, and closes the notch 11 in the down state (FIG. 1) and opens in the up state (FIG. 2). Note that the raised state is stopped when the cover is further rotated from the upright state, and this stopping is achieved by the upper surface edge 23 of the opening/closing cover 2 coming into contact with the upper surface of the main body 1.

At the left and right lower ends of the inverted U-shape of the opening/closing cover 2, flanges 24 are formed to protrude laterally. This flange 24 is used when opening the opening/closing cover 2 from the ground.
By pushing up this flange 24 with the tip of the ground rod 4, opening and closing operations can be easily performed.

Two inverted U-shaped reinforcing members 25, 25 are attached to the upper part of the opening/closing cover 2. The reinforcing members 25, 25 not only provide reinforcement but also provide appropriate weight to the open/close cover 2 to prevent birds and animals from opening the cover 2.

It should be noted that if the protrusions 14, 14 and the inner surfaces of the left and right lower ends of the opening/closing cover 2 are brought into contact with each other, or even in pressure contact with each other, it will be more difficult for birds and animals to open the opening/closing cover 2, but this is not necessary.

Next, how to attach and use this insulating cover will be explained.

[Installation to bus bar]

1 Open the left and right lower ends 12, 12 of the main body 1 and insert it from above the bus bar 3.

2. Insert the locking pin 13 into the insertion hole of both lower ends 12, 12 and fix it.

[How to use during maintenance and inspection]

1. Push up the flange 24 of the open/close cover 2 from the ground using the tip of the ground rod 4 (Fig. 1) to raise the open/close cover 2.

2 The opening/closing cover 2 opens and the bus bar 3 appears.

3 Insert the tip of the ground rod 4 through the notch 11, hook it to the internal bus bar 3, and ground it (second
figure).

4. After completing maintenance and inspection, remove the grounding rod 4 and use its tip to push the opening/closing cover 2 in the direction of arrow a.

5. The opening/closing cover 2 is rotated to lie down, and the notch 11 is closed.

<Effects of the invention> As mentioned above, in the present invention, the notch is closed by the opening/closing cover, so birds and animals cannot come into contact with the bus bar. Furthermore, since the notch is closed in the prone position, in order for a bird or beast to open the cover, it must lift the cover, something that a bird or beast cannot do. Therefore, the present invention provides an insulating cover that can reliably eliminate damage such as leakage caused by birds and animals. On the other hand, when a worker wants to open the openable cover, it is sufficient to push up the openable cover using a ground rod from the ground, and conversely, when the worker wants to close the openable cover, it is sufficient to push the openable cover in the opposite direction using a ground rod from the ground. The opening/closing cover can be opened and closed extremely easily from the ground.

Incidentally, by providing the flange 24 as in the embodiment, pushing up by the grounding rod can be performed more easily. In addition, as in the embodiment, the reinforcing material 25,
25, it is possible to give an appropriate weight to the opening/closing cover 2 and to make it more difficult for birds and animals to open the cover.

As described above, the present invention has been able to provide an insulating cover that allows easy grounding work from the ground and can completely prevent damage from birds and animals.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an insulating cover for preventing damage to birds and animals of one embodiment in a closed state, and FIG. 2 is a perspective view of the same in an open state. 1...Main body, 2...Opening/closing cover, 3...Bus bar, 4...Grounding rod, 11...Notch part.

Claims (1)

[Scope of utility model registration request] In the insulating cover for preventing damage from birds and animals that is attached to the secondary busbar of an outdoor transformer, the cover has a main body that covers the busbar, a notch for inserting a grounding rod formed at an appropriate location on the main body, and a cutout for inserting a grounding rod. An opening/closing cover for opening and closing the recessed part, the opening/closing cover is attached to the main body so as to be rotatable up and down, and opens the notch in the upright position and closes the notch in the down position. Insulating cover for preventing damage from birds and animals.