JPS60183904A - Gas insulted 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] [Field of application of the invention] The present invention relates to a gas insulated switchgear.

[Background of the invention]

In FIG. 1, a typical skeleton of a gas-insulated switchgear with a voltage transformer is shown. The other end of the breaker 4, which has one end connected to the main bus 1, is connected to a cable head 9 via a disconnector 7.

Earthing switches 3, 5, and 8 are connected to both ends of the breaker 4 and the cable head 9 side of the disconnector 7, and a voltage transformer 6 is connected between the breaker 4 and the disconnector 7. has been done.

An example of a conventional gas insulated switchgear configured in accordance with this skeleton is shown in FIG. 2. As shown in FIG. 4 terminals are taken out from one ill of the sealed container 30.

The upper terminal of these terminals is connected to a disconnector 7 constructed within the conductor tube 10 and further connected to a cable head 9. An earthing switch 5 and a potential transformer 6 are connected between this upper terminal and the disconnector 7, and an earthing switch 8 is connected between the disconnector 7 and the cable head 9. ing.

On the other hand, the lower terminal of the breaker 4 is connected to the main bus 1 via the disconnector 2, and the earthing switch 3 is connected between the breaker 4 and the disconnector 2.

In the gas insulated switchgear configured in this way, as is clear from the figure, the upper conductor pipe 10 is connected to the disconnector 2 on the r side.
The cable has a length exceeding the main bus 1 and is connected to the cable pen 9, and the cable is suspended on the opposite side of the breaker to the main bus 1. For this reason, the conductor tube 10 becomes longer, and the area it occupies as a whole becomes larger.

In order to reduce the overall occupied area, the inventors have proposed a gas insulated switchgear having the following structure. That is, as shown in FIG. 3, the sealed container 30 of the vertical breaker 4 has an opening 31 at the bottom for leading out one terminal of the breaker 4, and an opening 31 for leading out the other terminal of the breaker 4 at the top. Two openings 32 and 33 are formed to lead out the terminals. Both openings 32.3
3 are desirably formed on the same horizontal line so as to face each other, but they may be opposed to each other with some deviation in the circumferential direction of the sealed container 300, or may be slightly shifted in the vertical direction. Note that it is desirable that the opening 32, that is, the branching section 32, be formed above the opening 31, that is, the branching section 31, but in any case,
f1. b'' has a pair of radially branched portions 32 and 33 near the upper end of the container 3o.

The main bus 1, that is, the 3-phase all-in-one main bus yH
is connected. There is a disconnector 2 in the sealed container of the main bus 1.
is built in, and a grounding switch 3.5 is built in the sealed container 30, sandwiching the breaker. The potential transformer 6 is connected to the opening 32 at the top of the sealed container 3o via a connection spacer 38, and the disconnector 7 is connected to the opening 33 via an insulating spacer 39.

Although the gas-insulated switchgear configured in this way has a smaller overall footprint, each of the grounding switches 3 and 5 must be operated independently, requiring two operating devices (not shown). Met.

[Purpose of the invention]

The present invention has been made in view of the above points, and provides a gas-insulated switchgear that allows a grounding switch installed between a breaker terminal and the ground to be operated with a single operating device. The purpose is to

[Summary of the invention]

That is, the present invention connects one terminal of a vertical breaker with a breaker section housed in a cylindrical whistle enclosure to the main bus bar, connects the other terminal to an instrument transformer and a cable head, and connects the breaker section to the main bus bar. In the gas insulated switchgear, a disconnector is provided between the circuit breaker and the busbar and the cable head, and a grounding switch is provided between each of the circuit breakers and the earth. , the grounding switch is arranged above and below in the sealed container, and an operating link is rotatably attached to the outer surface of the sealed container, and a link provided on the grounding switch is connected to the operating link via a rond; The operating link is connected to the operating device outside the sealed container via an operating iron, so that when the operating device is operated, the terminal of the breaker is connected to the ground via the operating link and the link. The earthing switch installed between the

[Embodiments of the invention]

The present invention will be described above based on the illustrated embodiments. FIG. 4 shows an embodiment of the present invention. Note that parts that are the same as those in the conventional system are given the same reference numerals, and therefore their explanations will be omitted. In this embodiment, the grounding switches 3.5 are arranged above and below inside the sealed container 30, and an operating link 22 is provided on the outer surface of the sealed container 30.
is rotatably attached, and the link 20.21 provided at the earthing switch 3°5 is connected to the operating link 22 with the iron 23.24.
and the operation link 22 to the bath sealing container 30.
It was connected to an external operating device 11 via an operating rod 25. By doing this, when the operating device 11 is operated, the earthing switches 3 and 5 are operated via the operating link 22 and the links 20 and 21. A gas insulated switchgear that can be operated with the operating device 11 can be obtained.

That is, the lift ILllllIl mover (not shown) of the earthing switch 3 provided at the lower part of the containment container 30 was provided so as to be connected thereto, or connected to the earthing switch 21. Similarly, the grounding side mover (not shown) of the grounding switch 5 provided on the upper part of the flute 8 device 30 was connected to the link 20 provided to be connected thereto. An operation 611 in which these links 20 and 21 are connected via rods 23 and 24 to an operating link 22 rotatably attached to the outer surface of the sealed container 30, and this operating link 22 is provided on the side of the sealed container 30. It was connected to via an operating rod 25. By doing this, when the operating device 11 is operated, the operating link 22 rotates via the operating rod 25, and as the operating link 22 rotates, the links 20 and 21 via the rods 23 and 24 rotate. As it rotates, the ζ grounding switch 5.3 opens and closes, and the grounding switch 3.5 can be operated with one operating device 11, allowing the gas insulated switchgear to be downsized.

〔Effect of the invention〕

As mentioned above, the present invention connects the terminal of the circuit breaker to the ground and 01[1
The earthing switch installed between the circuit breaker and the ground can now be operated by one operator. It is possible to obtain a gas insulated switchgear that enables this.

[Brief explanation of the drawing]

Fig. 1 is a skeleton diagram of a gas insulated switchgear in position i, Fig. 2 is a front view of a conventional gas insulated switchgear, Fig. 3 is a front view of an embodiment of the gas insulated switchgear of the present invention, and Fig. 4 is also −
#: It is an operation rock groove diagram of the example.

Claims (1)

[Claims] 1. Connect one terminal of a vertical breaker with a breaker section housed in a cylindrical sealed container to the main bus bar, connect the other terminal to the instrument transformer and cable head, and connect the breaker to the front. (d) A gas insulated switchgear in which a disconnector is provided between the self bus bar and the cable head, and a grounding switch is provided between both terminals of the breaker and the ground, respectively. Earthing switches are arranged above and below within the oval-sealed valley device, and an operation link is rotatably attached to the outer surface of the sealed container, and a link provided on the earthing switch is connected to the operation link via a rond. , and the operating link is connected to an operating device outside the can sealer via an operating iron.