JPH0229763Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a reduced type switchgear, and more particularly to an arrangement structure of a breaker housed inside a box-shaped container.

(Prior Art) Conventionally, as shown in FIGS. 1 and 2, the equipment in this type of switchgear has been arranged such that a grounding device 4 is placed on a mounting plate 2 of a box 1 in the order of main circuit connections. A power receiving side disconnector 5, a power disconnector 3,
Load side disconnector 5a and transformer primary disconnector 5b
etc. were arranged in the longitudinal direction. However, although this arrangement of devices is advantageous in terms of conductor connections, it is difficult to meet the recent demand for downsizing of switchgear.
There was a limit because appropriate insulation intervals had to be provided between each piece of equipment. For example, as shown in Fig. 2, it is necessary to provide an insulation interval C between the shield breaker 3 and the disconnectors 5 and 5a, so when installing the shield breaker 3, it is necessary to The dimensions must be added to the design. Therefore, since the longitudinal dimension L of the box 1 must be A+2C, it has been difficult to downsize the switchgear unless the disconnectors 5, 5a, and 5b are downsized.

In the figure, reference numeral 6 indicates pushing on the power supply side, and reference numeral 7 indicates pushing on the load side. 8 is the mounting plate 2
It is a box that supports the sheath cutter 3 and houses the operating mechanism of the sheath cutter 3 inside.

(Purpose of the invention) The present invention aims to improve the above-mentioned conventional technology and respond to the demand for downsizing of switching devices.

(Summary of the invention) Based on the above-mentioned purpose, the present invention is based on the above-mentioned purpose. The longitudinal dimension of the box is shortened by arranging them in tandem on one side, and sequentially placing disconnectors for the power receiving side, load side, and transformer primary on the other long side. The aim is to make the unit smaller and lighter.

(Example) An example of the present invention will be described below with reference to FIGS. 3 to 5. In the figure, the same reference numerals as in FIGS. 1 and 2 refer to the same constituent parts, and the explanation thereof will be omitted.

Three phases of the disconnectors 3 are arranged in a vertical line in a direction parallel to the arrangement direction of the disconnectors 5, 5a, and 5b.
The disconnectors 5, 5a, and 5b are arranged in series and parallel to each other with appropriate intervals for three phases.
These disconnectors 5, 5a, and 5b are offset and fixed to one long side of the mounting plate 2, and the sheath disconnector 3 is offset and fixed to the other long side. For this reason, the disconnector 3 is installed and fixed protruding from the row of disconnectors 5, 5a, 5b, so the longitudinal dimension l of the box body 1 is changed from the conventional longitudinal dimension L shown in FIG. 2 to the mounting width A+2C.
The box body 1 can be made smaller by reducing the length of the box body 1.

Note that the short side dimension S of the box 1 is the same as that of the conventional case. That is, as shown in FIG. 6A, in the conventional example, the dimension S of the short side of the box 1 is the sum of the diameter dimension 3A of the three-phase shield and disconnector 3 and their insulation interval 4C,
3A + 4C = 5A. In this embodiment as well, the dimension S of the short side of the box 1 is as shown in FIG. 6B.
A+3B+5C (B is the diameter of the disconnector 5, etc.), which is equal to 5A.

(Effects of the invention) According to the invention described above, the mounting position of the disconnector 3 is made to protrude from the arrangement direction of the earthing device 4 and the disconnectors 5, 5a, 5b, and is mounted on the long side of the box body 1. Since they are mounted and fixed close together, the installation length of the shear cutter 3 can be omitted in the longitudinal dimension of the box 1, and the box 1 can be reduced in size by that dimension.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of the conventional example, Fig. 2 is a plan sectional view of Fig. 1, Fig. 3 is a front sectional view showing an embodiment of the present invention, and Fig. 4 is a plan sectional view of Fig. 3. , 5th
The figure is a side sectional view of FIG. 4, and FIGS. 6A and 6B are comparative illustrations of the conventional example and the above embodiment. 1...Box body, 2...Mounting plate, 3...Shipping switch,
5, 5a, 5b...Disconnector.

Claims (1)

[Scope of utility model registration request] In a cubicle-type switchgear equipped with a three-phase disconnector, a grounding device, and a disconnector, a grounding device 4 and a disconnector 5, 5 are arranged in parallel in three phases.
a, 5b are arranged on one long side of the box 1, and a three-phase shear disconnector 3 is arranged on the other long side of the box 1 in a direction parallel to the arrangement direction. A reduced-sized opening/closing device characterized by being arranged side by side on a mounting plate 2 in tandem.