JPS60187217A - Gas insulated 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 INDUSTRIAL APPLICATION The present invention relates to a gas insulated opening device installed in an electrical station such as a substation.

Prior Art Gas-insulated switchgear that has been widely used in the past includes circuit breakers,
Necessary equipment such as grounding equipment, current transformers, and branch conductors used to connect the circuit breaker to other equipment (e.g., bus bar) are housed in individual metal containers filled with SF6 gas.
The configuration was such that predetermined metal containers were interconnected via insulating spacers. However, such a structure has the disadvantage that a large number of containers are combined in a complicated manner, resulting in a complicated structure, and the device becomes large and requires a large amount of installation space. Therefore, recently, various improved gas-insulated switchgears have been proposed that are designed to simplify the structure by storing multiple devices in a common container. This is an improved type of gas-insulated switchgear, in which the circuit breaker and the equipment connected to the circuit breaker, which are necessary for any configuration of the circuit breaker, are housed in a common outer shell container to form the main unit. constitute the main unit [to,
Connect other units as necessary, such as a busbar unit that houses both the busbar and the bus-side disconnector in a common container, or a cable head unit that stores the line-side disconnector and cable head in a common container. There are structures that do this. With this configuration, gas-insulated switchgear with various circuit configurations can be easily constructed around the main unit, and the installation area can be reduced compared to conventional gas-insulated switchgear. can. However, conventionally proposed devices of this type require a circuit breaker operator and monitoring equipment (=
Since the J-digit monitoring panel is housed in a separate container, the structure becomes complicated and the installation area becomes large.

L1 aspect of the invention An object of the present invention is to provide a gas-insulated switchgear in which the installation area is reduced by housing a circuit breaker operating device and a monitoring panel in a common operating device box. be.

Structure of the Invention The gas-insulated switchgear to which the present invention is directed includes a main unit configured by housing at least a circuit breaker in an outer shell container;
A busbar unit configured by housing a busbar side disconnector and a busbar connected to the circuit breaker via the busbar side new circuit switch in a common busbar container, and an m-breaker operating device for operating the circuit breaker. The present invention is directed to a gas-insulated switchgear in which the busbar container is connected to the front side of the outer shell container, and the busbar container is connected to the front side of the outer shell container.

The first invention of the present application is that in this type of gas insulated switchgear, an operator box whose front surface can be opened and closed is provided below the main unit, and the outer shell container is supported on the operator box. The present invention is characterized in that the monitoring flR and the series of controllers are respectively arranged one behind the other in the controller box.

In addition to the above configuration, the second invention of the present application provides a working opening for assembling and inspecting the busbar and busbar side disconnector on the front surface of the busbar container, and the opening can be removed. The present invention is characterized in that a new circuit device operating device that is airtightly closed by a lid plate and that operates the busbar-side disconnect switch is disposed near the busbar container.

The above-mentioned circuit breaker may be of any type as long as it houses a circuit breaker consisting of a movable contact, a fixed contact, an arc extinguishing mechanism, etc. in a cylindrical M1G1 container.

For example, there is a buffer-type cass breaker that extinguishes the arc by spraying arc-extinguishing gas onto the arc using a buffer cylinder, and an arc-rotating type that extinguishes the arc by rotating the arc using the magnetic force generated by the arc current. A gas circuit breaker etc. can be used.

On the front of the outer shell container of Mi ni 1 - Chive 1 ~, there is a bus bar unit 1 ~
However, it is free to connect other units to the outer shell container. For example, when configuring a gas disconnector device (bustie unit) used to connect busbars, a busbar-side disconnect switch installed between the busbar and the circuit breaker and The busbar unit, which is housed in the container, is connected to the firearm inside the outer shell container through the I-firearm connection opening of the outer shell container. Also, the gas-insulated open I3J device (used to connect the feeder to the busbar) is When configuring a feeder unit, a cable head unit housing the busbar unit, a cable head, and a line-side disconnect switch disposed between the cable head and the interrupter Ii in a container connects the busbar unit to the interrupter Ii. It is connected to the equipment inside the outer shell through the opening.

It is also conceivable that the operator box is placed side by side with the outer shell container of the main unit. If the operator box is arranged side by side with the outer shell container in this way, the height of the device can be lowered, but the installation area will inevitably increase. On the other hand, if the operator box is placed on the F side of the main unit 1- as in the present invention, the height of the device will increase, but the installation surface (i) can be reduced.

In general, reducing the installation area is much more advantageous in terms of effective space utilization than reducing the height of the device to some extent, so the present invention is of great significance.

In addition to the effects of the invention, according to the present invention, an operating box is provided below the main unit, and the monitoring panel and circuit breaker operating equipment are arranged in front and behind each other within the operating box, making installation easier. The area can be reduced. Further, since other equipment such as a monitoring panel or an operating box is not arranged in front of the bus unit, assembly and maintenance and inspection of the bus unit can be easily performed. In particular, according to the second invention of the present application, the monitoring panel and the circuit breaker operating device are housed in the operating device box disposed below the main unit, thereby making use of the space formed near the container of the busbar unit. Since the operating devices that operate the disconnecting switches of bus units 1 to 1 are arranged, the disconnecting switches of the bus unit and their operating devices can be connected with the shortest distance, and the connection mechanisms such as operating devices and disconnecting switches can be easily connected. In addition, the disconnector can be operated reliably and its reliability can be increased. In addition, a working volume opening is provided on the front surface of the busbar unit 1~, and this opening is closed with a removable cover plate, making assembly and maintenance inspection of the busbar and busbar side disconnector in the busbar unit easy. There are advantages to being able to do this.

Example The present invention will be described in detail below with reference to the accompanying drawings.

Figures 1 to 3 show a first embodiment in which the present invention is applied to a feeder unit placed between a bus bar and a feeder, and show the electrical configuration of each phase in the first embodiment. A single line connection diagram is shown in FIG.

In FIG. 7, BSI and BS2 are the first and second busbars, respectively, [ )311 and D812 are the first and second busside disconnect switches, respectively, and the first busbar BS1 and the first busside new line switch A first bus unit is constructed by storing the DSII in a common container, and a second bus unit is constructed by storing the second bus BS2 and the second bus-side disconnector DS12 in a common container. The bus unit 1 is configured. C
B is the m disconnector, [811 and ES12 are the first and second interrupters, respectively;
is a current transformer fitted in the current transformer conductor, and these circuit breakers C
I3. Both earthing devices ES1. ES2 and current transformers CTa to CTc are housed in an outer shell container to constitute a main unit. DS2 is a track side disconnector, Cl-1 is a cable head, ES2 is a grounding device for the cable head, and LA is a lightning arrester. is configured. Further, PT is an instrument transformer provided on the cable head unit side and connected to a conductor connecting between the disconnector DS2 and the current transformer conductor.

Figure 1 is a top view, Figure 2 is a sectional view of I=I[m in Figure 1,
FIG. 3 is a top view showing the arrangement of equipment 1) inside the outer shell container, and in these figures, d3 and 1 indicate operating unit units 1 to . 2
are placed on the controller unit 1 and the lp main units 1 to .
3A and 3B are the upper F on the front side of the main unit 1-2 respectively.
The first and second busbar units arranged in the main unit 2 and the cable head unit 4 arranged on the back side of the main unit 2 constitute one gas insulated switchgear GIS. In this embodiment, as shown in FIG. 1, two similarly configured gas insulated switchgears V GIS are arranged side by side in the horizontal direction, and the bus line B8 of both gas insulated switchgears is
1 comrades and bus BS 2 comrades are mutually connected.

The operating device unit 1 includes an operating device box 101 formed in the shape of a rectangular parallelepiped and placed on the installation base 5 with its longitudinal direction aligned with the front-rear direction of the device. An inspection door 102 is provided. An operation panel 103 is disposed at the front end of the operation box 101 and is equipped with push buttons for operation and monitoring equipment.

An operating device supporting frame 104 is arranged behind the controller 3. A circuit breaker operating device 105 and grounding device operating devices 106 and 107 are supported on the frame 104, and below the frame 104 is a cylinder 108 that supplies compressed air to an air cylinder that drives the operating devices. It is located.

The main unit 2 includes a cylindrical outer shell container 201, and the outer shell container 201 is arranged so that the axis of the outer shell container 201 is oriented in the vertical direction.
It is arranged on the upper surface near the rear end of 01. Outer shell container 2
The lower end opening of 01 is hermetically closed by an equipment support plate 202 which also serves as a bottom plate, and the upper end opening is closed by a removable attachment plate 20.
3, it is hermetically closed. An opening 1 is provided at the rear end of the operating device box 101 at a position facing the temperature-sensitive support plate 202 on the soil surface.
09 is provided, and the equipment in the outer shell container 2 is connected to the operating device in the operating device box 101 through this opening. First and second device connection openings 201a and 201b1fi are provided on the front side of the side wall of the outer shell container 201 at intervals vertically, and a third device connection opening 201a and 201b1fi is provided on the back side of the side wall of the outer shell container 201. An ITj ni1 port 201c is provided. The openings for connecting each device are made at the periphery of holes made through the side wall of the outer shell container, and are made by welding 0 pipes (8). A flange f is provided.

The equipment support plate 202, which also serves as the bottom plate of the outer shell container, is the controller box 1.
The opening 109 of 01 is closed, and the support leg 20 is placed on the device support plate 202 and fixed to the operator box.
A three-phase circuit breaker CB is mounted on the plate 205 via the circuit breaker 4. Each circuit breaker CB houses a movable contact, a fixed contact, and an appropriate arc extinguishing mechanism in a cylindrical breaker container 206, and has a side surface near the upper end of the cylindrical container 206 and a side surface near the lower end. A fixed-side terminal 207 connected to a fixed contact and a movable-side terminal 208 connected to a movable contact are provided on each side. As shown in Fig. 3, the three-phase circuit breakers CI3 are arranged at the vertices of an isosceles triangle with their respective axes facing up and down, and each lower end has a cut-off mold ((J The operation @ 209 for operating the movable contact of each Wire circuit breaker CB passes through the mounting plate 205 and is guided downward, and is attached to the mounting plate 205. The operating shafts 209 of the three-phase circuit breakers are interconnected by a three-phase connecting plate 210. A common operating shaft 211 is attached to the center of the three-phase connecting plate 210, and the operating shaft 211 The mounting is carried out airtightly and slidably through a thrust bearing 212 attached to the plate 202, and led out into the operating device box 101.The common operating shaft 211 led out into the operating device box 101.
is the drive of the operating device 105 via the lever 240 @105
When the drive shaft 105a is driven in the left-right direction in FIG. 2 by an air cylinder connected to the cylinder 108 and driven by the compressed air in the cylinder 108, the common operation +t* 211 is driven downward and upward to shut off the three phases. The device CB is operated all at once. FIG. 2 shows a state in which the circuit breaker C13 of each phase is closed, and when the drive shaft 105a is driven leftward from this state, the circuit breaker C13 of each phase is closed.
(iil <.

A conductor 214 connected to the first R4 wire unit via a connecting conductor 213 is connected to a fixed side terminal 207 provided on the upper front side of the circuit breaker CB of each phase.
The upper end of a branch conductor 215 arranged on the front side of the circuit breaker in parallel with the circuit breaker is connected to the conductor connection section provided in the circuit breaker. In addition, the movable side terminal 208 of the circuit breaker C [3 of each phase is connected to the current transformer conductor 217 of each phase (current transformer conductor shown in Fig. ) are connected via connecting conductors 218, and each current transformer conductor 217 is connected to the three current transformers C'1' a7! of each phase.
J to CTC is fitted.

At the lower end of the branch conductor 215, a conductor 220 connected to the second bus unit 3B is connected to the fixed side unit h2 of the grounding device.
21 is connected. A movable unit 223 of the grounding device is connected to the support plate 202 via the frame 222.
is attached, and the fixed side unit 221 and the movable side unit 223 constitute a first circuit breaker inspection grounding device ES11. Each movable side unit 223 is equipped with a rod-shaped movable contact 224 that comes into contact with and separates from a fixed contact provided on the fixed side unit I, and the movable contacts 224 of the earthing device ES11 of each phase are connected to each other via a lever 225. It is connected to the rotation operation shaft 226 of. The operating shaft 226 passes through the side wall of the outer shell container in an airtight and rotatable manner and is led out to the outside, and is further connected to the grounding device operating device 106 in the J-stiff operating device box 101 through an appropriate connection mechanism 227 such as a link mechanism. connected. The operating device 10G is equipped with a 3-phase grounding device [:3
11 are opened and closed at the same time.

Further, a fixed side unit 231 of a grounding device is connected to the lower end of the current transformer conductor 217. The movable unit I- of the grounding device is mounted on the equipment support plate 202 via the frame 232.
233 is attached, and the fixed side unit 231 and the movable side unit h 233 constitute a second 'a1gi equipment inspection grounding device ff1Es12. Each movable unit 1
233 is equipped with a bar-shaped movable contact 234 that comes into contact with and separates from the fixed contact provided on the fixed side units 1 to 231, and the movable contacts 234 of the grounding devices ES12 of each phase are connected to each other via a lever 235 in common to the fixed contacts 1). It is connected to the rotation operation shaft 236 of.

The operating shaft 236 is led out through the side wall of the outer shell container in an airtight and rotatable manner, and the link is further connected to the grounding device operating device 107 in the operating device box 101 by a suitable connection mechanism 237 such as 114. has been done.

The three-phase earthing device ES12 is opened and closed simultaneously by the operating device 107.

In Fig. 2, in order to prevent the diagram from becoming complicated, the circuit breaker CB, branch conductor 215, and current transformer C King are shown for only one phase, and the circuit breakers, branch conductors, and current transformers of other phases are shown. The current transformer is not shown.

The busbar container 300 that depicts the first busbar unit 3A is
A first tube 3 extending horizontally in the front-rear direction as shown in FIG.
01 and a second tube 302 disposed at right angles to the first tube 301 and extending horizontally in the lateral direction, and inside the second tube 302 of the container 300. 3-phase busbar [Busbar conductors 303u to 30 forming node 1 of 3S1
3w are arranged in parallel. 3-phase bus conductor 303U
303w to 303w are supported by an insulating spacer 30/I arranged to hermetically close one end of the second tube 302. Further, one end of the first pipe 301 of the container 300 is airtightly connected to the first (heater connection opening 201a) of the outer shell container 201 via an insulating spacer 305.
A first bus-side disconnector D S is located at the end of the embedded conductor 306 that is placed in the container 300 and covered by the embedded conductor 306 that is installed in a circular manner.
Eleven fixed contacts 307 are connected. Further, a movable contact 308, which forms a disconnector together with the fixed contact 307, is connected to the bus conductors 303U to 303w.
The operating rod 309 that operates the movable contactor is connected to the container 300.
It is connected to an operating mechanism 310 disposed at the other end of the first tube 301 . The operation axis of the operation IA structure 310 is the container 30
The three-phase blood vessel device DS11 is connected to an operating device 311A supported on the side surface of the device 311A, and the three-phase blood vessel device DS11 is opened and closed simultaneously by the operating device 311A. In order to prevent the operation mechanism 310 from disturbing the electric field near the disconnector DSII, an electrostatic shield 312 is provided between the operation mechanism 4Pi 310 and the disconnector 1) 311. First tube 301 of container 300
At the other end, there is a working opening 313 for maintenance and inspection of the bus bar and disconnector DSII in the container 300.
is provided, and this part is hermetically closed by a removable mounting plate 31/I.

The above-mentioned "TA wire" is located in the outer shell container 201 of the embedded conductor 306 supported by the insulating space 1 no.
A conductor 214 connected to the fixed side terminal 207 of the VJi unit is connected to the end of the IMII of each phase.
The fixed side terminal 207 of the device CB is connected to the first bus unit 3.
Connected to the bus conductor of △.

The second bus units 1 to 3B are the first bus units 1 to BS.
1, the fixed contact 307 and the movable contact 308 in the container 300 of the second busbar unit 3B are configured in exactly the same way.
A second bus-side new line switch DS12 is configured.

The operating shaft of the operating mechanism 310 of the second busbar side disconnector DS12 is connected to an operating device 311B attached to the side surface of the container 300 of the second IJJ line unit. The container 300 of the second bus unit 1-3B is connected to the second device connection opening 201 of the outer shell container 201 via an insulating spacer 305.
b hermetically connected to the embedded conductor 3 of the insulating spacer 305.
Branch conductor 21 at the end located inside the outer shell container 201 of 06
A conductor 220 connected to 5 is connected.

The container 400 of the cable head units 1 to 4 is made of a tubular body arranged with its axis facing in the vertical direction.
A first device connection opening 400a and a second device connection opening 400b are provided at the upper end of the front side (outer shell container side) of 00, respectively. Furthermore, container 4. Working openings 400c and 400d are provided in the side wall on the rear side of the OO, spaced apart from each other in the vertical direction.

The first equipment is attached to the opening 400a and the working opening 4.
00. Both C and 4001 have a short pipe welded to the periphery of a hole provided in the container 4oo, and a flange f is provided at the end of one of the short pipes.

The L1 device connection opening 400a of the container/100 is airtightly connected to the third device connection opening 201c of the outer shell container 201 via an insulating spacer 401, and the insulating space 1]4
01 has a three-phase buried conductor 4o2. The upper end of the current transformer conductor 217 is connected to the end of the embedded conductor 402 located inside the outer shell container 2°1 via a connecting conductor 240. Also, one end of a connecting conductor 403 is connected to the end of the embedded conductor 402 of each phase that is placed inside the container 400, and the other end of the connecting conductor 403 of each phase is connected to a fixed contact of a line-side disconnector DS2. 405 is connected. Further, a conductor 408 extending vertically is supported on a frame 406 supported on the side wall of the container 400 via an insulating support 407.
A movable contact 409 of a disconnector DS2 is connected to the upper end of the disconnector DS2. The blood circuit device DS2 of each phase is provided coaxially with the embedded conductor 402 on an extension of the axis of the embedded conductor 402 of the insulating spacer 401. The operation rod 4.10 of the movable contact 409 of the three-phase disconnector DS2 is connected to the disconnector operator in the operator box 411 attached to the side of the container 400 via the three-phase connecting plate 414 and a connecting mechanism (not shown). The operating mechanism connects the three-phase disconnector DS2 to
It is designed to be manipulated.

Also, the lower end of the conductor 408 is connected to Jt! The fixed contact 412 of J device ES2 is connected. A movable contact 413 of the earthing device ES2 is supported on the frame 406, and the movable contact 412 is connected to the operating device for the grounding device (1) in the operating device box 411 via a connection gM4M (not shown), and the movable contact 412 is connected to the operating device for the grounding tool The three-phase grounding device ffffEs2 is operated all at once.

The lower end of the container/100 is hermetically closed by a bottom plate 415, and three holes 416 are formed through the bottom plate 415 for connecting three-phase cables. and container 4
A three-phase cable head CI-1 is installed from the inside of the 00 so as to airtightly close each of these three holes.
The cable head C+-+ of each phase is attached to the terminal of the cable C of the corresponding phase (the pulled connector 417 is attached to the hole 416
It is connected so that it can be inserted and removed through it. A lightning arrester LA is arranged on the side of the cable head CH of each phase, and the non-grounding side terminal of the lightning arrester of each phase is connected to the cable head C of the corresponding phase.
It is connected to the terminal 418 at the upper end of l-1 and to the corresponding phase conductor /108 via a connecting conductor 419.

A voltage transformer P for power supply is airtightly connected to the device connection opening 400b at the upper end of the container 400 via an insulating space 1420, and each phase connected to the lower end of the transformer 1) The terminal is connected to the connection conductor 403. In addition, the working month L1 part 400G of the container 400 and 4. OOd
are hermetically closed by cover plates 421 and 422, respectively.

In this embodiment, the container 400 of the cable head unit 4
A box body 423 is arranged to cover the cable C which has gone up from the underground cable pits 1 to X'1, and the container 400 is supported by the box body 423. With this configuration, the mechanical strength of the device can be increased. Note that this box body 423 can also be omitted.

When assembling the main unit 2 of the gas-insulated switchgear described above, first place the equipment support plate 202 on top of the operator box 101.
The circuit breaker CB and the movable units 222, 2 of the grounding devices ES11 and ES12 are fixed on the equipment support plate 202.
Take 32] () After I and X, branch conductor 21 to circuit breaker CB
5 and the current transformer conductor 217, and connect the current transformers CTa to C.
Install Tc. After that, the outer shell container 201 is lifted up (lowered onto the molded support plate 202, and the lower end of the outer shell container 201 is connected and fixed to the equipment support plate 202. Next, the first and second spellings of the outer shell container 201 are The first and second busbar units 3A and 3B are installed in the openings 201a and 201b for connecting the
from the upper end opening of the outer shell container 201 to the embedded conductor 306 of the insulating spacer 305 of the busbar units 3Δ and 3B.
Connections are made with conductors 214 and 220. Furthermore, the cable unit 400 is connected to the device connection opening 201C of the outer shell container 201, and the current transformer conductor 217 and the insulating base J-401 are connected through the upper end opening of the outer shell container 201.

Thereafter, the upper end opening of the outer shell container 201 is hermetically closed with the lid plate 203.

When installing a plurality of gas insulated switchgear GIS as shown in FIG. Connect the end of the tube 320
The other gas le! The edge 17i1 is connected to the insulating spacer 304 of the open device.

Then, the busbars of adjacent busbar units are connected to each other through the insulating space 1) 304.

In the above embodiment, the circuit breaker CB and the grounding devices F311 and ES12 for circuit breaker inspection are attached to the equipment support plate 202, which also serves as the bottom plate of the outer shell container, via the support legs 204 and the frame 232. It is sufficient that they are supported by the support plate 202, and for example, as shown in FIG. Equipment support plate 202 that also serves as a ceiling plate
In this example, the crankcase 110 has an airtight structure, the inside of the crankcase is communicated with the inside of the outer shell container 201, and the side wall of the crankcase 110 is airtightly through the operation shafts 240 and 241.24 of the circuit breaker CB and grounding device ES11.ES12.
2 is led out. And the operation shaft 24 of circuit breaker CD
0 is connected to the circuit breaker operator 105 in the operator box 101, and the operating shafts 241 and 242 of the grounding devices ES11 and ES12 are connected to the earthing device operator 106.

In each of the above embodiments, the operating shafts of the circuit breaker inspection grounding devices E811 and ES12 are connected to the operating device individually, but the operating shafts of these grounding devices are connected inside the outer shell container (see Fig. 1). (in the case of Fig. 3) or inside the crankcase (in the case of Fig. 3)
(In the case of Fig. 4), both grounding devices are connected so that they can be opened and closed by one operating shaft, and the one operating shaft is passed through the side wall of the outer shell container or crankcase in an airtight manner. By connecting to a common operating device, both earthing devices ES11 and ES12 can be configured to be opened and closed at the same time.

In the above embodiment, the voltage transformer PT was connected to the M disconnection side terminal of the disconnector DS2, but as shown in FIG. .

A single line diagram in this case is shown in FIG. That is, according to the above embodiment, the voltage transformer 1゛1 is connected to the disconnector D.
Unit 1 is used both when connecting to the M disconnector side of S2 and when connecting to the line side (cable head side) of disconnector DS2.
- There is no need to change the configuration of 4.

FIG. 9 shows another embodiment of the present invention.
Movable units 223 and 23 of Es11 and ES12
3 is omitted, and the frames 222 and 232 for the connection device used in the embodiment of FIG. 2 are omitted. With this configuration, the structure of the main unit can be simplified. Further, in this embodiment, the operation shafts of the earthing devices ES11 and ES12 are provided by airtightly passing through the side wall of the outer shell container 201.
is connected to a grounding device operating device 106 provided outside the operating device box 101, and the grounding devices [S11 and ES12 are opened and closed simultaneously by the operating device.

Note that the voltage transformer PT is not always provided, and its necessity is determined depending on the operating conditions of the user.

Therefore, in the above embodiment, the most efficient equipment arrangement is made without a voltage transformer, and if a voltage transformer 1) T is required, the dead space above the cable head unit is used to install the voltage transformer. We are trying to set up a PT. A certain amount of space is required above the outer shell container to enable inspection of the circuit breaker, and a certain amount of space is required above the cable head unit at the installation site, so Head space cannot be eliminated. Therefore, utilizing the space above the device to install a voltage transformer, which is not always provided, leads to effective use of spacers and greatly contributes to downsizing the device.
It will be E.

In the above embodiment, the voltage transformer was arranged in the upper part of the container 400 of the cable head unit, but as shown in FIG. In this case as well, the voltage transformer can of course be connected to either the circuit breaker side or the line side (cable head side) of the new line switch DS2. The illustrated embodiment eliminates the need for an enclosure for voltage transformer P-[, and also eliminates the need for an insulating spacer 420.
414 structure can be easily constructed.

In the above embodiment, the present invention was applied to a gas-insulated switchgear having a switching circuit with a double busbar configuration, but by omitting one busbar unit, a switching circuit with a single BJ line configuration was used. A gas insulated switchgear (111) can also be constructed.

In the above explanation, the present invention was applied to a feeder unit placed between a bus bar and a feeder connected to the bus bar, but the present invention is also applicable to a bus tie unit used to connect bus bars together. Of course you can.

For example, in FIG. 2, the cable head unit 4 is removed, the 'C' fil II section 201G is hermetically closed, the conductor 214 is removed, and one end of the current transformer conductor 217 is connected to the insulating spacer 305 of the first bus unit 3Δ. By connecting to the embedded conductor 306 of the bus tie unit 1 to which connects the bus bar 831 and BS2, it is possible to configure a bus tie unit 1 to connect the bus bar 831 and BS2. In other words,
A feeder unit and a bus tie unit can be configured by simply changing the arrangement of conductors within the outer shell container.

If the upper end of the outer shell container 201 is configured to be openable as in each of the above embodiments, inspection of the circuit breaker CI3 can be facilitated.

Also interrupted [11i? ,'A C[3 and current transformer conductor 217
By arranging the branch conductor 215 in parallel, the height of the outer shell container 201 can be lowered.
The height of the operating device box 101 can be made high, so that a worker can enter the operating device box 101 and maintenance and inspection work can be easily performed.

As in the above embodiment, the operation shaft of the circuit breaker is linearly slidable and is led out to the outside of the outer shell container by 1 degree. The structure of the derivation section can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a top view showing an embodiment of the present invention, and FIG. 2 is a top view showing an embodiment of the present invention.
Fig. 3 is a cross-sectional top view showing the equipment arrangement inside the outer shell container of the same embodiment, and Fig. 4 shows the main parts of the third embodiment of the present invention. The cross-sectional views shown in FIGS. 5 and 6 are cross-sectional views showing modified examples of the cable head and knit, and FIG. 7 shows the electrical configuration of the embodiment shown in FIGS. 1 to 3. Figure 8 is a single line diagram showing the electrical (8 components) of the embodiment shown in Figure 5, and Figure 9 is a cross-sectional view of the main part of another embodiment of the present invention. Yes. 1... Controller unit, 101... Controller box, 10
5... Circuit breaker operating device, 106, 107... Grounding device operating device, 2... Main unit, 201... Outer shell container, 202... Equipment support plate, 215... Branch conductor ,
217... Current transformer conductor, CI3... Circuit breaker, 1Es
11 and ES12...first and second circuit breaker inspection grounding devices, 3A and 3B...first and second busbar units 1-1 [3S1. BS2... Bus bar, DSll and DS12... First and second bus side disconnectors, 4... Cable to rad unit, Cl-1... Re-pull head, LA... Lightning arrester, DS2 ...Itli road equipment on the track side. Figure 1 Figure 5 Figure 7 Figure 8

Claims (4)

[Claims] (1) A main unit configured by storing at least a circuit breaker in an outer shell container, and a busbar connected to the circuit breaker via the busbar side disconnector and the IJJ line side new circuit switch in a common busbar container. The bus bar unit configured by being housed inside the circuit breaker is provided with a circuit breaker operator for operating the circuit breaker and a monitoring panel to which monitoring equipment is attached, and the bus bar container is connected to the front side of the outer shell container. In the gas-insulated switchgear, an operator box capable of opening and closing a curved surface is disposed below the main unit, the outer shell container is supported on the operator box, and the monitoring panel and the circuit breaker operator are arranged. A gas insulated opening/opening device characterized in that the gas insulated opening/opening devices are arranged one behind the other in the operating device box. (2) The gas insulated switchgear according to claim 1, wherein the front surface of the operator box and the front surface of the bus bar container are arranged on substantially the same plane. (3) A main unit configured by housing at least a circuit breaker in an outer shell container, a bus-side disconnect switch, and a bus connected to the circuit breaker via the bus-side disconnect switch are housed in a common bus container. The busbar unit 1 is housed and configured, and a monitoring panel is equipped with monitoring equipment such as a circuit breaker operating device for operating the circuit breaker, and the busbar container is connected to the front side of the outer shell container. In the gas insulated switchgear, an operator box is disposed on the F side of the main unit, and the outer container is supported on the operator box. The operating devices are arranged one behind the other in the operating device box, and have a working opening on the front side of the busbar container for assembling and inspecting the busbar and bus-side disconnector. 1. A gas-insulated switchgear characterized in that a disconnecting switch operating device for operating the busbar-side disconnector is disposed near the busbar container, and the disconnector is airtightly closed by a removable rose plate. . (4) The gas insulated switchgear according to claim 3, wherein the front surface of the operator box and the front surface of the lid plate that closes the frontage of the bus bar container are arranged on substantially the same plane.