JPS60261312A - Composite gas switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a composite gas switchgear which houses several switches.

There was something. In the figure, switch /, 2. ．． Enclosure 4 surrounding each of 3! , j, and A are connected together, and an insulating fluid is sealed in the container 7, and each switch /, 2.3 is a movable armature /a, core a that rotates.

Equipped with 3a, fixed armature /b, kob, and 3b.

They are supported and housed in the container 7 via bushings g, ri, and /θ, respectively. //, /2. /3 indicates the ground terminal.

Since the conventional composite gas switchgear was configured as described above, the switch/ , , 2. With the opening/closing operation of the switch, the free movement of the arc generated between the armatures and the release of arced gas poses the risk of short-circuiting with adjacent switches.To prevent this, the distance between each switch must be increased. The drawback is that it is difficult to downsize the device because of the need to provide insulation and insulation partitions.

[Summary of the invention]

This invention focuses on the differences in the relative motions characterized by the armatures of switches, takes advantage of their respective functions and features, and effectively utilizes the connections and spaces between switches to greatly improve the equipment. The purpose of this invention is to provide a composite gas switchgear that can be reduced in size.

In order to achieve this object, the present invention provides a composite gas switchgear in which one unit of the switch is arranged in the center as an encircling type, and other switches of units are arranged below both sides of the switch. do.

[Embodiments of the invention]

FIG. 2 shows a first embodiment of the present invention, in which a first non-release type switch such as a vacuum type is placed in the center of three switches arranged approximately in parallel. and a second one on each side at the bottom. A third switch λko, ko3 is arranged. The switch 2/ is arranged so that the movement of the movable armature is obtained by rotational movement 1, and the movable armature is in a substantially horizontal state when the main circuit is formed. The switch 23 is equipped with rotating movable armatures a and 3a, and the movable armature is configured as a three-position type. That is, the movable armature 22&,
The main circuit is closed when the switch 3a is horizontal, the main circuit is grounded when it is vertical, and the neutral state is set between the horizontal and vertical positions. These switches are housed in a container Koda filled with insulating fluid.
The first Pushingko S and the second supported by the container, 2 Hiro. third bushing, 26. ．． It is led out of the container via two. 2g and 9 indicate the ground terminal.

Below is the second one. The operation will be described in the case where the third switch 2.2.23 is connected to the power receiving circuit and the first switch λl is connected to the load side, forming a so-called T-branch circuit.

Now, when the switches 1.2λ and 23 are all closed at ℃, the loop current in the switch 2λ and 23 on the power receiving side is as follows.
A load current flows through each switch 21 on the load side. From this state, in order to open the loop, one of the power receiving switches, for example, the switch 22, is opened. At this time, the switch 2-2 generates an arc between the armatures as the loop current is interrupted, and releases a considerable amount of arced gas to the surroundings. This arced gas is
However, since this switch does not release the arced gas into the container when the flow is interrupted, or is almost shielded, it can maintain sufficient dielectric strength during transient retention of the arced gas without expanding its dimensions. can be obtained. The same applies to the case where the load-side switch 1 is opened due to a load abnormality that may occur around this time. In addition, there is a sufficient distance between the power receiving side switches Koni and Ko3 for insulation, so there is little need to consider this.

Therefore, compared to the conventional device shown in FIG.
ctd can be small.

FIG. 3 shows a second embodiment of the invention, in which the first switch 1 is of the linear operating type, and the bushing 2 has 26.
The cores are placed side by side on the bottom wall of the container.

The same effect can be obtained by arranging two movable armatures fi, 2t7a on the bushing roller and -7 sides, respectively.

Fig. 3 shows a third embodiment of the present invention, in which the switch 1.23 on the power receiving side is used as a common grounding switch, and the movable armatures - cores a, co, ? Bushing L26. It rotates around the core side as a fulcrum, and the grounding terminal, 2t, and core are placed in line with the centrally located switch, which increases the degree of integration both horizontally and vertically, and further reduces the size of the device. achieved.

〔Effect of the invention〕

As described above, according to the present invention, three switches are arranged as one unit, and these switches are arranged substantially in parallel, and the switch in the center arrangement is connected to a vacuum tube-type switch that, when operated, carries arced gas into a container. Therefore, a composite gas switchgear can be obtained that facilitates a compact array panel configuration in which the dimensions between the switches can be significantly reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially cross-sectional schematic front view of a conventional composite gas switchgear, Fig. 2 is a partially cross-sectional schematic front view of the first embodiment of the present invention, and Fig. 3 is a part of the second embodiment. Cross-sectional schematic front view, No. 9
The figure is a partially cross-sectional schematic front view of the third embodiment. 2/ 11 II First switch 1.22...first switch, 23...-third switch, 2q...-container, λ5...-
First bushing 5.26...First bushing, 27
-Third bushing, 2g and 291111 ground terminal. In each figure, the same reference numerals indicate the same or corresponding parts. Figure 1 Figure 2 Figure χ3 Figure 1 Procedural amendment “Spontaneous” Showa 5 Carp 9υ12 B Mr. Commissioner of the Patent Office 1, Indication of the incident Showa! De-hand permission request No. 1/! ! 92 No. 2, Name of the invention Composite gas switchgear 3, Relationship to the case of the person making the amendment Patent applicant address 2-2-3 Marunouchi, Chiyome J-ku, Tokyo Name (601) Mitsubishi Electric Corporation Representative Hitoshi Katayama Department 4, Agent Address: 4th floor, Marunouchi Building, 4-1, 2-1 Marunouchi, Chiyoda-ku, Tokyo Contents of amendment fl+ Changed ``vacuum type'' to ``vacuum switch tube'' on page 3, line 9 of the specification. and correct it. (2) On page 3, line 72, "rotation" is corrected to "straight line." (3) In line 17 of No. q, ``Switch, that is,'' is corrected to ``Switch is ko l.'' (4) No. 6 drug purchase line S to line 9 [A vacuum tube-shaped opening/closing device is obtained. "of"
The isolation from the arced gas produced by the operation of the side-arranged switches results in a compact composite gas switchgear in which the dimensions between the switches can be significantly reduced. ” he corrected.

Claims (1)

[Claims] In a composite gas switchgear comprising a container filled with an insulating gas and a plurality of switches housed in the container, at least one first unit of non-opening type and disposed in the center is used.
1. A composite gas switch device comprising: a switch; and a third switch and a third switch respectively disposed on both sides of the first switch.