JPH0722028Y2 - Switch gear - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear having a downsized switchgear housed in an airtight container in which an electrically insulating medium such as insulating gas or oil is sealed.

[0002]

2. Description of the Related Art A conventional air-type switch gear of this type is
As shown in FIG. 2, two rod-shaped insulators 2 are arranged side by side on a frame 1 of the container and supported, and terminals 3 and 4 of a pair of charging parts of three phases are attached to both insulators 2 and one of them is attached. The base of the blade 5 is rotatably provided on the terminal 3, and the tip of the blade 5 is brought into contact with and separated from the opposite side of the frame 1, that is, from the outside, to the other terminal 4.
By rotating the drive shaft 6 supported by the frame 1, the blade 5 is rotated via the lever 7 and the link 8 to open and close the disconnector.

[0003]

The conventional switchgear is of the air type, and the blade 5 of the disconnector is the frame 1.
Since it opens to the opposite side, that is, to the outside, there is a problem that the depth dimension of the disconnector is large and the switch gear is large.

The present invention has been made in view of the above points, and an object thereof is to provide a switchgear which is improved in electric insulation and has a reduced depth dimension of a disconnecting switch so as to be downsized.

[0005]

In order to solve the above-mentioned problems, the switchgear of the present invention is such that an electrically insulating medium such as insulating gas or insulating oil is enclosed in a hermetically sealed container, and a frame in the container is rod-shaped insulated. The body is supported, the terminals of the charging part of the pair of disconnectors are attached to the insulator, the base of the blade is rotatably provided on one of the terminals, and the tip of the blade is brought into contact with or separated from the other terminal. The blade is free and the opening direction of the blade is on the frame side.

[0006]

In the switchgear of the present invention constructed as described above, the electrically insulating medium is enclosed in the airtight container so that the electrical insulation is improved, and the switchgear is connected to one terminal of the pair of terminals. While supporting the blade rotatably, the tip of the blade can be freely contacted and separated from the other terminal, and the opening direction of the blade is the frame side, that is, the inside,
The depth of the disconnector is significantly reduced, and the switchgear can be made smaller.

[0007]

EXAMPLE One example will be described with reference to FIG.
In the figure, the same reference numerals as those in FIG. 2 indicate the same or corresponding parts. This embodiment is different from FIG. 2 in that the disconnector 9 is S
Closed container (not shown) filled with insulating gas such as F ₆ gas
And the opening direction of the blade 5 on the frame side,
In other words, it is the inside point. Further, the shapes of the terminals 3 and 4 are extended in the direction in which they are close to each other, the dimension of the blade 5 is short, and the rotation angle is small. It is getting smaller.

It should be understood that insulating oil may be used instead of the insulating gas in the closed container.

[0009]

Since the present invention is constructed as described above, it has the following effects. Since the electrically insulating medium is enclosed in the closed container, the electrically insulating property can be improved, and the blade 5 is rotatably supported by the one terminal 3 of the pair of terminals 3 and 4 of the disconnector 9. At the same time, since the tip end of the blade 5 can be freely contacted and separated from the other terminal 4 and the opening direction of the blade 5 is on the frame 1 side, that is, the inside, the depth dimension of the disconnector 9 is about 1 in comparison with the air type. The switch gear can be made significantly smaller to 1/2, and therefore the switch gear can be downsized.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a side view of a conventional example.

[Explanation of symbols]

 1 frame 2 rod-shaped insulator 3, 4 terminal 5 blade 9 disconnector

Claims (1)

[Scope of utility model registration request] 1. An electrically insulating medium such as insulating gas or insulating oil is sealed in a hermetically sealed container, a rod-shaped insulator is supported by a frame in the container, and terminals of a pair of charging parts of a disconnector are attached to the insulator. A switchgear in which the base of a blade is rotatably mounted on one of the terminals, the tip of the blade is attached to and detached from the other terminal, and the opening direction of the blade is on the frame side.