JP2007014079A - Gas insulated switchgear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-insulated switchgear which is excellent in reliability by reducing the gas processing range in the case where a bus is broken up, and preventing the drop of insulation performance due to foreign matter generated at opening and closing of a earthing switch for inspection on bus side. <P>SOLUTION: A sealed container 15a for under connection, which has housed a connecting conductor 8 electrically connected to one end of a breaker 6, is arranged roughly vertically, and an sealed container 15b for upper connection is connected to the top of this sealed container 15a for under connection, and sealed containers 1 and 2 for buses arranged each roughly horizontally are connected to the upper parts of the sealed container 3 for a breaker, which are positioned on both sides of this sealed container 15b for upper connection, and the earthing switch 5 for inspection on bus side is arranged at the middle in the axial direction of the sealed container 15a for under connection positioned under a horizontal arrangement type gas-dividing insulating spacer 9. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gas-insulated switchgear constituted by connecting a main bus to one end of a circuit breaker via a bus disconnector and a bus switch grounding switch.

  In a gas insulated switchgear, a switchgear such as a circuit breaker, a disconnect switch, a ground switch, etc. are connected to each other in a sealed container filled with an insulating gas while being electrically insulated from the sealed container. It is constructed by accommodating high voltage conductors to be connected, is excellent in insulation performance and safety, and can be reduced in installation space. Therefore, it is widely applied to electrical stations such as substations. In this gas insulated switchgear, an insulating spacer for gas classification used to prevent foreign matters from being mixed into the sealed container in order to ensure insulation performance, and to gasify the inside of the sealed container as needed. It is important to prevent foreign matter from adhering to the insulator. In particular, it is important not to create a situation that causes foreign matter contamination or foreign matter adhesion in a gas compartment containing a circuit breaker with high importance.

  A conventional gas-insulated switchgear has a known configuration in which a double main bus connected to one terminal-side conductor of a circuit breaker is disposed above a circuit breaker hermetic container containing a circuit breaker (for example, a patent) Reference 1). According to such a configuration, by supplying power using one of the double main buses, in the event of an accident on one main bus, by switching the connection to the other main bus and using it Reliable power supply is possible, and the main bus where the accident occurred can be easily dismantled locally. The configuration shown in FIG. 2 is conceivable as a gas insulated switchgear that takes advantage of such advantages.

  A circuit breaker 6 is formed in the circuit breaker hermetic container 3 arranged almost horizontally, and a substantially vertical connection airtight container 4 containing a connection conductor 8 is connected to one end of the circuit breaker hermetic container 3. A bus-side current transformer 7 is arranged in the middle part of the hermetic container 4, and the busbar hermetic containers 1 and 2 are connected to both upper sides of the connection hermetic container 4 via busbar disconnectors 12 and 13, respectively. Further, a bus-side inspection grounding switch 5 is provided at the head of the connection hermetic container 4. Gas separation between the sealed container 4 for connection and the sealed containers 1 and 2 for the busbars is performed, and gas partition insulating spacers 10 and 11 for electrically insulating and supporting the conductor from each sealed container are provided. In contrast, a common gas compartment is formed between the connection airtight container 4 and the circuit breaker airtight container 3 without using a gas partition insulating spacer. The gas-insulated switchgear having such a configuration reduces the ground contact area, and in the unlikely event that an accident occurs in one main bus, the bus sealed container 1 and its interior or the busbar sealed container 2 and its interior Can be easily dismantled.

JP-A 61-170211

  However, when the gas-insulated switchgear described above is disassembled when an accident occurs in any one of the main buses represented by the sealed containers for busbars 1 and 2, when either one of the gas-segment insulating spacers 10 and 11 is removed, Gas treatment not only in the busbar sealed container 1 or the busbar sealed container 2 but also in the connection sealed container 4 and the circuit breaker sealed container 3 is required, and the gas processing range is widened. Moreover, when the circuit breaker sealed container 3 of the circuit breaker 6 which is the most important gas insulated switchgear is opened to the atmosphere, it is a field work unlike the dismantling assembly in the factory where the work environment is controlled. There is a concern about the contamination of foreign matter, resulting in a decrease in reliability. Therefore, in order to limit the gas processing range when disassembling any one of the busbars to the connection sealed container 4, the gas partition insulation horizontally disposed between the circuit breaker sealed container 3 and the connection sealed container 4. It is possible to install an additional spacer. However, since the bus-side inspection grounding switch 5 is configured at the head of the connection sealed container 4, a foreign object should be generated in the vicinity of the bus-side inspection grounding switch 5 due to field work. If mixed, foreign matter adheres to the horizontally-arranged insulating spacer for gas classification due to vibration at the time of opening and closing, and the insulating performance is deteriorated, so this solution cannot be adopted.

  The object of the present invention is to reduce the gas processing range when disassembling the bus on site, and to improve the reliability by preventing the deterioration of the insulation performance due to foreign matter due to vibration during opening and closing in the bus side inspection ground switch The object is to provide a switchgear.

  In order to achieve the above object, the present invention provides a circuit breaker configured in a circuit breaker sealed container, a connection sealed container containing a connection conductor electrically connected to one end of the circuit breaker, and the connection sealed container A busbar airtight container containing the busbar disconnector and the busbar conductor, which are connected to each other through an insulating spacer for gas classification and electrically connected to the connecting conductor, and the bus side inspection grounding capable of grounding the connecting conductor In the gas-insulated switchgear comprising a switch and having an insulating gas sealed in each of the sealed containers, the connecting sealed container is disposed substantially vertically and horizontally disposed in the vertical intermediate portion of the connecting sealed container An insulating spacer for gas partitioning is arranged, and the busbar hermetic container is connected to the upper part of the connecting sealed container in the horizontal direction via the insulating gas spacer for vertical arrangement. Characterized in that a bus side inspection grounding switch for grounding the connection conductor to the lower than.

  According to a second aspect of the present invention, in the first aspect of the present invention, the connecting airtight container located below the insulating gas spacer for horizontally arranged gas section is provided between the airtight container for the circuit breaker. It is characterized by being connected so as to form a common gas space without providing an insulating spacer for sorting.

  Furthermore, the present invention described in claim 3 is the one described in claim 1, wherein the connecting sealed container is electrically connected to the connecting conductor above the insulating gas spacer for horizontally arranged gas section. An upper connection sealed container having a conductor lead-out portion that leads out the conductor in each of the left and right horizontal directions is configured, and one of the conductor lead-out portions of the upper connection sealed container has the insulating gas spacer for the vertically arranged gas section. One busbar sealed container arranged almost horizontally is connected to the other, and the other conductor lead-out portion of the upper connecting sealed container is arranged almost horizontally via the other vertically arranged gas partition insulating spacer. The other closed busbar container is connected.

  Furthermore, the present invention described in claim 4 is the one described in claim 1, wherein the circuit breaker hermetic container is disposed substantially horizontally, and the lower part of the connection hermetic container is provided at the upper part of one axial end thereof. It is connected.

  The gas insulated switchgear according to the present invention is arranged vertically when disassembling the busbar hermetic container and its interior due to the occurrence of an accident by disposing the horizontally disposed gas partition insulating spacer in the vertical middle part of the connecting hermetic container. Even if the insulating spacer for the gas partition is disassembled, the gas processing in the upper connecting sealed container located on the side of the closed container for the busbars may be carried out from the horizontally arranged insulating spacer for the gas partition. It is not necessary to carry out gas processing in a closed circuit breaker container, and the circuit breaker sealed container containing the circuit breaker, which is the most important device as a gas insulated switchgear, is not opened to the atmosphere on site. In addition, since the bus-side inspection grounding switch is configured in the busbar hermetic container located below the insulating spacer for horizontal gas partitioning, the bus-side inspection grounding switch can be opened by field work. There is no deterioration of the insulating performance of the horizontally arranged gas partition insulating spacer due to foreign matter mixed in the vicinity of the same part during field work as in the prior art. Accordingly, the gas treatment range at the time of busbar disassembly at the site is reduced, and a gas-insulated switchgear with improved reliability by preventing deterioration in insulation performance due to foreign matter due to vibration at the time of opening and closing in the busbar side inspection ground switch be able to.

  In addition, the gas insulated switchgear according to the present invention described in claim 2 is connected so as to form a common gas space between the connecting sealed container and the circuit breaker sealed container without providing a gas partition insulating spacer, so that foreign matter accumulates. The reliability can be improved by reducing the number of horizontally-arranged type gas partition insulating spacers that are at risk.

  Further, the gas insulated switchgear according to the present invention as claimed in claim 3 is used for either one of the vertically arranged gas divisions when disassembling one of the double-bus closed containers and the inside due to an accident. Even if the insulating spacer is disassembled, it is only necessary to carry out the gas treatment in the sealed container for upper connection, and it is not necessary to carry out the gas treatment in the sealed container for the breaker as in the prior art. The airtight container for the circuit breaker that houses the circuit breaker, which is an important device, is not opened to the atmosphere. In addition, it is easy to disassemble the main bus in the event of an accident while lowering the floor by connecting the double main bus sealed container in the direction of the right and left water of the upper connection sealed container, and for horizontally arranged gas classification Since the bus-side inspection grounding switch is disposed below the insulating spacer, it is possible to prevent the insulation performance from being deteriorated by arranging the horizontally arranged gas dividing insulating spacer.

  In addition, the gas insulated switchgear according to the present invention as set forth in claim 4 arranges the grounding side switch for inspection on the busbar side by effectively utilizing the axial length of the sealing container for connection while further suppressing the overall height. Further, since the inside of the circuit breaker sealed container is not opened to the atmosphere from the dismantling of the sealed container for busbars at the time of an accident, a highly reliable gas insulated switchgear can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a gas insulated switch according to an embodiment of the present invention.
A circuit breaker 6 that is opened and closed by an operating device 23 disposed at one end of the circuit breaker hermetic container 3 is configured in the circuit breaker hermetic container 3 arranged almost horizontally. A lower end portion of the connection sealed container 4 disposed substantially vertically is directly connected to an upper portion of one end portion in the direction without passing through an insulating spacer for gas division. This connection sealed container 4 has a vertical lower connection sealed container 15a positioned below it, and an upper connection formed at the upper part thereof and having conductor lead-out portions in the left and right horizontal directions, for example, in a cross-shaped cross section. And a horizontally-arranged gas partition insulating spacer 9 disposed between the two sealed containers 15a and 15b. A bus-side current transformer 7 is disposed below the lower connection sealed container 15a, and a bus-side side is disposed in the middle of the lower connection sealed container 15a located below the horizontally-arranged gas partition insulating spacer 9. The inspection grounding switch 5 is configured.

  In this airtight container for connection 4, the airtight container for busbars 1 and 2 constituting the double busbar is detachably disposed at the upper part of the airtight container for circuit breaker 3, and the transport height restriction is considered in order to transport them integrally. Using this axial length, the bus-side current transformer 7 and the bus-side inspection grounding switch 5 are configured at positions shifted in the vertical direction. Although details will be described later, a line-side configuration or a transformer-side configuration connected to the other end of the circuit breaker 6 is connected to the upper part of the other axial end of the circuit breaker hermetic container 3 while considering the relationship with these configurations. When the above-described busbar sealed containers 1 and 2 are configured to be removable, the connecting sealed container 4 needs a certain axial length. Therefore, as can be seen from the comparison with FIG. 3, even if the bus-side current transformer 7 and the bus-side inspection grounding switch 5 are attached to the connecting sealed container 4, the axial length of the connecting sealed container 4 is extremely increased. I will not let you.

  The upper connection sealed container 15b of the connection sealed container 4 stores connection conductors 14 branched to the left and right, respectively, and one of the conductor lead-out portions has a vertically arranged insulating spacer for gas section arranged substantially vertically. 10 is connected to a sealed container 1 for busbars arranged almost horizontally through 10, and the sealed container 2 for busbars arranged almost horizontally through other vertical arrangement type gas partition insulating spacers 11 to the other conductor lead-out portion. Is connected. The upper connecting sealed container 15b formed in a substantially cross-shaped cross section has its head sealed with an end lid, and therefore may be formed in a substantially T-shaped cross-section with the head omitted. The busbar closed container 1 accommodates a busbar disconnector 12 and a bus conductor 1a for three phases. The busbar disconnector 12 is configured to be opened and closed by an operating device 16. Also, the busbar closed container 2 accommodates a busbar disconnector 13 and a three-phase busbar conductor 2a, and the busbar disconnector 13 is configured to be opened and closed by an operating unit 17. The busbar closed containers 1 and 2 are configured to extend by a predetermined distance in the axial direction of the busbar conductors 1a and 2a. The axial length of the busbars at the time of transportation is set in consideration of the transport limit.

  On the other hand, one end of a substantially horizontal connecting sealed container 19 on the line side, for example, is connected to the upper part of the other axial end portion of the circuit breaker sealed container 3 arranged substantially horizontally. It is connected to the other electrical end of the circuit breaker 6. A gas partition insulating spacer may be interposed between the two, but this is omitted, and the circuit breaker hermetic container 3 and the connection hermetic container 19 are defined as the same gas compartment. A line-side current transformer 24 is provided in the vicinity of the other end of the connection sealed container 19, and the other end is disposed substantially vertically via a vertically-arranged gas partition insulating spacer 25. It is connected to the. In the closed container 21 for the disconnector, a line-side disconnector 20 that is opened and closed by an operating unit 26 and a line-side grounding switch 27 are configured. The other end of the disconnector airtight container 21 is connected to insulation lead-out means (not shown) via a vertically arranged gas partition insulating spacer 28 arranged substantially vertically. It is desirable that the main bus side described above and the vertically arranged gas partition insulating spacer 28 on the line side are assembled and transported together in the factory.

  In the gas insulated switchgear described above, an insulating gas is sealed in each hermetic container, and in many cases, a plurality of gas compartments are formed by the gas compartment insulation spacers. For example, there is no other gas partition insulating spacer below the horizontally arranged gas partition insulating spacer 9 provided in the connection sealed container 4, and the inside of the lower connection sealed container 15 a and the circuit breaker sealed container 3 Is a common gas compartment, and the inside of the upper connection sealed container 15b is an independent gas compartment partitioned by a horizontally-arranged gas partition insulating spacer 9 and vertical-arranged gas partition insulating spacers 10 and 11. .

  The bus disconnectors 12 and 13 configured inside the bus sealed containers 1 and 2 are configured to open and close the mover substantially horizontally, and a generally known configuration can be adopted. Also, the normally-known configuration can be adopted for the bus-side inspection grounding switch 5 provided in the connection hermetic container 4 located below the insulating spacer 9 for horizontally arranged gas section. For example, the driving force from the operating device (not shown) is transmitted to and operated by a ground potential movable element arranged in the lower connecting sealed container 15a while maintaining the hermeticity of the lower connecting sealed container 15a. The connection conductor 8 is configured to be grounded by contacting the attached stator.

  As described above, if there is a conductive foreign object near the movable part configured in each sealed container, the foreign object will drop due to vibration during the opening / closing operation, and so on. There is a danger of adhering to and deteriorating the insulation performance. However, here, the horizontal arrangement type partitioning insulation spacer 9 is used in the vicinity of the bus-side inspection grounding switch 5, but in consideration of the positional relationship between them, the horizontal arrangement type gas division insulation spacer 9 is provided above. Since there is no switch in the gas space, and the bus-side inspection grounding switch 5 is disposed below the horizontally-arranged gas partitioning insulating spacer 9, the bus-side inspection grounding switch should be used. 5, even if conductive foreign matter is present in the vicinity of the movable portion 5, the foreign matter does not drop and adhere to the horizontally disposed gas partition insulating spacer 9, and the horizontally disposed gas partition insulating spacer 9. Can maintain stable insulation performance regardless of the nearby switch.

  In addition, an upper connection sealed container 15b is located above the horizontally-arranged gas partition insulating spacer 9, but there is no bus-side inspection grounding switch 5 in the upper connection sealed container 15b. Since the movable parts of the bus disconnectors 12 and 13 are formed in the busbar sealed containers 1 and 2 that are gas-divided by the vertically-arranged gas segment insulating spacers 10 and 11, the busbar disconnectors 12 and 13 should be used. Even if there is a conductive foreign substance in the vicinity of the movable part, the foreign substance adversely affects the insulating performance of the horizontally arranged gas partition insulating spacer 9 as well as the vertically arranged gas partition insulating spacers 10 and 11. Never give.

  Such a gas-insulated switchgear includes a gas compartment for the busbar sealed containers 1 and 2 on both sides of a gas compartment formed by the upper connecting airtight container 15b, and a lower part of the gas compartment formed by the upper connecting airtight container 15b. For example, when disassembling one of the bus sealed containers 1 and 2 and the inside thereof due to the occurrence of an accident, the connection sealed container 4 is configured so that the gas compartment of the circuit breaker sealed container 3 exists in the Even if one of the vertically arranged gas partition insulating spacers 10 and 11 is disassembled, the gas processing in the upper connection sealed container 15b may be carried out. There is no need to perform gas treatment, and field work can be simplified by limiting the gas treatment range. Further, since the inside of the circuit breaker airtight container 3 containing the circuit breaker 6 which is the most important device as a gas insulated switchgear is not opened to the atmosphere, there is no fear of foreign matter mixing in the same part at the site. This is made possible by disposing a horizontally-arranged gas partitioning insulating spacer 9 in the middle in the vertical direction of the connection sealed container 4.

  Also, during the above-mentioned dismantling and reassembly at the site, the horizontal connection type gas partition insulating spacer 9 does not open the inside of the lower connection sealed container 15a to the atmosphere. No foreign matter is mixed in the vicinity of the vessel 5 during field work, and no foreign matter is dropped on the insulating gas spacer 9 for horizontally arranged gas classification by the vibration during the opening / closing operation of the bus side inspection grounding switch 5 thereafter. Therefore, it becomes a gas insulated switchgear excellent in insulation performance.

  In the gas insulated switchgear described above, the lower connection sealed container 15a that houses the connection conductor 8 that is electrically connected to one end of the circuit breaker 6 is disposed substantially vertically, and the lower connection sealed container 15a is disposed above the lower connection sealed container 15a. An upper connection airtight container 15b is connected, and busbar airtight containers 1 and 2 disposed substantially horizontally are respectively connected to the upper part of the circuit breaker airtight container 3 located on both sides of the upper connection airtight container 15b. Since the double bus system is configured by the basic configuration in which the bus-side inspection grounding switch 5 is arranged in the lower connection sealed container 15a located below the gas segment insulating spacer 9, the busbar sealed containers 1 and 2 are provided. It is possible to arrange and configure the bus-side inspection grounding switch 5 by making effective use of the axial length of the connection hermetic container 4 while lowering the layer, and the height is set within the transport limit dimensions for integrated transportation. Possible That. For this reason, the unit part of the gas insulated switchgear assembled at the factory can be carried on-site without being disassembled, and foreign matters can be prevented from being mixed to further improve the reliability.

  Of course, the size of each hermetic container varies depending on the voltage class used, and it may be difficult to configure the height direction within the transport limit, but the circuit breaker hermetic container 3 of the circuit breaker 6 is substantially horizontal as shown in the figure. The lower connection sealed container 15a is connected to the upper part of one end in the axial direction, and the upper connection sealed container 15b is connected to the upper part of the lower connection sealed container 15a. Connected to the upper part of the circuit breaker hermetic container 3 located on both sides of the hermetic container 15b are the busbar hermetic containers 1 and 2 arranged almost horizontally, and the lower connection located below the horizontally arranged gas partition insulating spacer 9 By arranging the bus-side inspection grounding switch 5 in the airtight container 15a, the axial length of the connecting airtight container 4 is effectively utilized while suppressing the overall height, and the bus-side inspection grounding switching is performed. 5 can be arranged, and since the inside of the circuit breaker sealed container 3 is not opened to the atmosphere from the dismantling of one of the bus sealed containers 1 and 2 at the time of an accident, a highly reliable gas insulated switchgear and can do.

FIG. 2 is a sectional view showing a gas insulated switchgear according to another embodiment of the present invention, which is applied to a single bus system.
A circuit breaker 6 that is opened and closed by an operating device 23 disposed at one end of the circuit breaker hermetic container 3 is configured in the circuit breaker hermetic container 3 arranged almost horizontally. A lower end portion of the connection sealed container 4 disposed substantially vertically is connected to the upper portion of the one end portion in the direction without passing through an insulating spacer for gas classification. This connection sealed container 4 has a vertical lower connection sealed container 15a positioned below it, and an upper connection formed at the upper part thereof and having conductor lead-out portions in the left and right horizontal directions, for example, in a cross-shaped cross section. And a horizontally-arranged gas partition insulating spacer 9 disposed between the two sealed containers 15a and 15b. A bus-side current transformer 7 is disposed below the lower connection sealed container 15a, and a bus-side side is disposed in the middle of the lower connection sealed container 15a located below the horizontally-arranged gas partition insulating spacer 9. The inspection grounding switch 5 is configured.

  The connecting airtight container 4 has an axial length in consideration of a transportation height restriction in order to detachably dispose the busbar airtight container 2 constituting a single bus at the upper part of the circuit breaker airtight container 3. Using this axial length, the bus-side current transformer 7 and the bus-side inspection grounding switch 5 are configured at positions shifted in the axial direction. A line-side configuration or a transformer-side configuration connected to the other end of the circuit breaker 6 is connected to the upper part of the other axial end of the circuit breaker sealed container 3 in the same manner as in the previous embodiment.

  The upper connection airtight container 15b of the connection airtight container 4 accommodates a connection conductor 14 branched to the busbar airtight container 2 side, and the conductor lead-out portion is arranged in a vertically arranged insulation for gas partitioning. A busbar hermetic container 2 disposed substantially horizontally is connected via a spacer 11. In the upper connection sealed container 15b, the conductor lead-out portion formed on the other in the horizontal direction is hermetically sealed by the end lid 22, and the head is hermetically sealed by the end lid. The configuration in the busbar sealed container 2 is the same as in the previous embodiment.

  Such a single-bus type gas-insulated switchgear includes a gas compartment of the busbar hermetic container 2 on the side of the gas compartment formed by the upper connecting airtight container 15b and a gas formed by the upper connecting airtight container 15b. Since the connection sealed container 4 is configured so that the gas compartment of the circuit breaker sealed container 3 exists in the lower part of the compartment, as in the case of the previous embodiment, one of the busbar sealed containers 2 is caused by the occurrence of an accident. When disassembling the part and the inside thereof, even the vertical arrangement type gas partition insulating spacer 11 may be disassembled, but the gas treatment in the upper connection airtight container 15b may be carried out. It is not necessary to carry out the gas treatment in 3. Further, when the bus bar is disassembled, there is no need to open the circuit breaker hermetic container 3 containing the circuit breaker 6 which is the most important device as a gas insulated switchgear to the atmosphere. Absent.

  Furthermore, since the bus-side inspection grounding switch 5 is disposed in the middle part of the lower connection sealed container 15a located below the horizontally-arranged gas partition insulating spacer 9, the same as in the previous embodiment. Similarly, since no foreign matter is mixed in the vicinity of the bus-side inspection grounding switch 5 by field work, it is possible to prevent the insulation performance from being deteriorated by the horizontally-arranged gas segment insulating spacer 9.

  In addition, foreign matter contamination can be considered by distinguishing between in-factory assembly that manages the surrounding environment and on-site disassembly and reassembly. According to this way of thinking, there is less possibility of foreign matter mixing at the time of assembly in the factory as compared with the field work. Therefore, a horizontally-arranged gas partitioning insulating spacer is arranged between the connection sealed container 4 and the circuit breaker sealed container 3. The connection with the connection closed container 4 in the circuit breaker closed container 3 is not limited to the upper side of the end of the circuit breaker closed container 3, and the same effect can be expected. In any case, in the gas insulated switchgear described above, consideration is given to foreign material contamination at the time of dismantling and reassembly at the site, so that the added horizontally arranged gas segment insulating spacer 9 does not deteriorate the insulation performance.

  The gas insulated switchgear according to the present invention is not limited to the configuration shown in FIGS. 1 and 2 and can be applied to other configurations. For example, the bus-side inspection grounding switch 5 may be provided on the circuit breaker sealed container 3 side, the connection sealed container 10 connected to the other end of the circuit breaker sealed container 3 and the line side disconnector sealed container 21. Other configurations can be adopted.

It is sectional drawing of the gas insulated switchgear by one embodiment of this invention. It is sectional drawing of the gas insulated switchgear by other embodiment of this invention. It is sectional drawing which shows the conventional gas insulated switchgear.

Explanation of symbols

1, 2 Busbar sealed container 1a, 2a Busbar conductor 3 Circuit breaker sealed container 4 Connection sealed container 5 Busbar side inspection grounding switch 6 Circuit breaker 7 Busbar side current transformer 8 Connection conductor 9 Horizontally arranged gas section insulation Spacers 10, 11 Vertically arranged gas partition insulating spacers 12, 13 Bus disconnector 15a Lower connection sealed container 15b Upper connection sealed container

Claims (4)

  A circuit breaker configured in the circuit breaker closed container, a connection sealed container containing a connection conductor electrically connected to one end of the circuit breaker, and a gas partition insulating spacer connected to the connection sealed container. A busbar sealed container containing the busbar disconnector electrically connected to the connecting conductor and the busbar conductor, and a busbar side inspection grounding switch capable of grounding the connecting conductor, and in each sealed container In the gas-insulated switchgear in which an insulating gas is sealed in, the connection sealed container is disposed substantially vertically, and a horizontally-arranged gas partition insulating spacer is disposed in the vertical middle portion of the connection sealed container. The bus sealed container is connected to the upper part of the connecting sealed container almost horizontally through the vertically arranged gas dividing insulating spacer, and the connecting conductor is connected to the lower part of the horizontally arranged gas dividing insulating spacer. Gas-insulated switchgear apparatus characterized in that a bus side inspection grounding switch to.   2. The connection sealed container located below the horizontally arranged gas partition insulating spacer according to claim 1, wherein the connecting sealed container is a common gas without providing a gas partition insulating spacer between the circuit breaker sealed containers. A gas insulated switchgear characterized by being connected to form a space.   2. The conductor according to claim 1, wherein the connection sealed container is electrically connected to the connection conductor above the horizontally arranged gas partition insulating spacer, and the conductors are led out in the left and right horizontal directions, respectively. One bus bar that is configured to have an upper connection sealed container having a lead-out portion, and is disposed substantially horizontally on the one conductor lead-out portion of the upper connection sealed container via the vertical arrangement type gas partition insulating spacer. The other airtight container for the busbars arranged almost horizontally is connected to the other conductor lead-out portion of the other airtight container for the upper connection through the other insulating spacer for vertically arranged gas section. A gas insulated switchgear characterized by. 2. The gas insulated switchgear according to claim 1, wherein the circuit breaker hermetic container is disposed substantially horizontally, and the lower part of the connection hermetic container is connected to the upper part of one axial end thereof. .

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