JPH0218528B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switchgear including a lightning arrester, a disconnector, and a breaker.

A conventional one is shown in FIG. In the figure, 1,
2 is a pedestal; 3 is a lightning arrester disposed on the pedestal 1 and has a terminal 3a; 4 and 5 are support insulators arranged at a predetermined distance on the pedestal 2; 6 is a fixed contact supported by the support insulator 4; 7 is a movable contact that can come into contact with and separate from the fixed contact 6, and 8 is a rotating mechanism supported by the support insulator 5, which is mechanically connected to the movable contact 7. Reference numeral 9 denotes a drive insulator driven by a drive source (not shown), which drives the movable contact 7 via the rotation mechanism 8.
Note that the rotation mechanism 8 is connected to the drive insulator 9 to operate the operation mechanism 10.
is configured. 11 is a support insulator; 12 is a breaker having terminals 12a and 12b;
1 is supported. 13 is a power receiving line connected to the terminal 3a, 14 is a connection line that connects the terminal 3a and the fixed contact 6, 15 is a connection line that connects the movable contact 7 and the terminal 12a, and 16 is a power supply line that is connected to the terminal 12b. It's an electric wire.

When each device is installed separately as in the above configuration, a certain electrical insulation distance is required between the live parts and grounding parts of adjacent devices, which reduces the floor space of the switchgear. There was a disadvantage to being large. Another disadvantage is that the connection wire between the terminals must be flexible in order to prevent the generation of stress.

This invention was made to eliminate the above-mentioned drawbacks, and includes a lightning arrester in which the fixed contact of the disconnector is attached to the terminal part, and a lightning arrester in which the rotation mechanism of the movable contact of the disconnector is attached to the terminal part. To provide a switchgear with a simple structure and a small floor space by arranging it on a common frame.

The figures will be explained below. In Figure 2,
The fixed contact 6 of the disconnector is electrically and mechanically attached to the terminal 3a of the lightning arrester 3. The operating mechanism 10 is supported between both ends of the support insulator 11. Then, the movable contact 7 and the terminal 1 of the disconnector 12
2a. The supporting insulator 11 supporting the shield breaker 12 and the lightning arrester 3 are respectively arranged on a common underframe 17.

FIG. 3 shows an example of application of the present invention, in which a mobile substation is constructed by combining a low voltage cubicle 19, a transformer 20, etc. on a trailer 18.

According to this invention, the fixed contact of the disconnector is supported by the lightning arrester, the operating mechanism of the movable contact is supported by the support insulator of the shield and disconnector, and the lightning arrester and the disconnector are arranged on a common frame. As a result, it is possible to obtain a switchgear that has a simple structure, occupies a small floor space, and is convenient for transportation and installation.

[Brief explanation of drawings]

FIG. 1 is a side view showing a conventional opening/closing device, FIG. 2 is a side view showing an embodiment of the present invention, and FIG. 3 is a side view showing an example of application of the present invention. In the figure, 3 is a lightning arrester, 6 is a fixed contact, 7 is a movable contact, 10 is an operating mechanism, 11 is a support insulator, 1
2. Hashiya disconnector. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A wire disconnector having a first terminal at the bottom and a second terminal at the top is supported by an insulating member whose one end is fixed to the underframe, and is placed at a predetermined distance from the insulating member. Fix the lower end of the lightning arrester to the above frame,
An operating mechanism that supports a fixed contact at the upper end of the lightning arrester, electrically connects a movable contact that can make contact with and separate from the fixed contact to the first terminal, and supports the movable contact and operates the movable contact. A switchgear characterized in that the insulating member is supported at both ends thereof.