JP2002315119A - Gas-insulated switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-insulated switch which can screen the electromagnetic waves leaking out through an insulating spacer and can electrically cut off a main body container and a ground container from each other when applying test voltage to the contact or the like of the breaker of itself. SOLUTION: This gas-insulated switch is provided with a shield conductor 40 which is composed of a cylindrical conductive member 41 being arranged to cover the insulating spacer 33 coupled between the main body container 31 on disconnector side and the grounding tool container 32, a bolt 4 for fastening one end 41a of the conductive member 41 to the grounding tool container 32 through a conductive spacer 45, and a bolt 46 for fastening the other end 41b of the conductive member 41 to the main body container 31 through a conductive spacer 47.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated switchgear in which a container of a grounded switch is connected to a main container of the gas insulated switchgear via an insulating spacer.

[0002]

2. Description of the Related Art FIG. 16 shows a conventional gas-insulated switchgear described in the Handbook of Electrical Engineering (IEEJ, published on February 28, 1988). In the figure, 1 is a disconnector container, 2 is a main conductor penetrating an insulating spacer 3 and connected to a circuit breaker (not shown), and 4 is a fixed contact provided on a main conductor 6 penetrating the insulating spacer 5. , 7 are movable contacts that are electrically connected to and separated from the fixed contacts 4 while being electrically connected to the main conductor 2 by the sliding contacts 8. The disconnector 9 comprises the disconnector container 1, the fixed contact 4, the movable contact 7, and the like.

[0003] Reference numeral 10 denotes a grounding device container connected to the disconnector container 1 via an insulating spacer 11, 12 denotes a fixed contact provided on the main conductor 2, and 13 denotes a fixed contact 12 penetrating the insulating spacer 11. The movable contact that comes in contact with and separates from the grounding vessel 10
Is electrically connected to A grounding switch 14 is constituted by the grounding device container 10, the fixed contact 12 and the movable contact 13, and the like. In the conventional gas insulated switchgear configured as described above, the grounding vessel 10 is normally electrically connected to the disconnector vessel 1, but the test voltage is applied to the contacts of the circuit breaker (not shown). Is applied, the grounding vessel 10 is disconnected from the disconnector vessel 1. Conventionally, to cope with such a problem, the grounding vessel 1 and the disconnecting vessel 10 are detachably connected to each other by simply connecting a thin plate-like connecting conductor (not shown) for grounding with a bolt or the like. Was.

[0004]

By the way, in the conventional gas insulated switchgear, when the disconnector 9 is turned on, a steep-wave surge is generated and the main conductors 2, 6,.
It propagates through the fixed and movable contacts 4, 7 and the like. In the conventional gas insulated switchgear, as described above, the grounding vessel 10 and the disconnector vessel 1 are simply connected by a thin connection conductor. Could not be shielded, and the electromagnetic waves leaking out of the container could adversely affect electronic devices that control the gas-insulated switchgear.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and it is possible to shield electromagnetic waves leaking outside through an insulating spacer and to apply a test voltage to a contact of a circuit breaker of a gas insulated switchgear. The present invention provides a gas-insulated switchgear capable of electrically disconnecting a main body container and a grounded container when a voltage is applied.

[0006]

A gas insulated switchgear according to the present invention is provided with a gas insulated switchgear having a grounding switch disposed in a grounding device container connected to a disconnector-side body container via an insulating spacer. In the device, both ends in the axial direction of the insulating spacer are arranged so as to cover the outer peripheral surface of the insulating spacer, and both ends of the insulating spacer are connected to the main body container and the grounding device container, and at least one of the both ends is provided with a shield conductor that can be separated and separated. is there.

In the gas insulated switchgear of the present invention, the shield conductor is disposed between the cylindrical conductive member, and both ends of the conductive member and one of the main body container and the grounding device container. It is composed of an energizing spacer and a bolt for fastening the conductive member to the main body container and the grounding device container via the energizing spacer.

Further, the gas insulated switchgear of the present invention is a gas insulated switchgear provided with a grounding switch arranged in a grounding container connected to a main body container on the disconnector side via an insulating spacer. A pair of shield conductors are provided so as to cover the outer peripheral surface of the spacer, one end in the axial direction of the insulating spacer is connected to one of the main body container and the grounding device container, and the other end is disposed so as to be able to contact and separate from each other. Things.

In the gas insulated switchgear of the present invention, the shield conductor is disposed between the cylindrical conductive member, and both ends of the conductive member and one of the main body container and the grounding device container. It is constituted by an energizing spacer and a bolt for fastening the conductive member to one of the main body container and the grounding device container via the energizing spacer.

The gas insulated switchgear of the present invention is a gas insulated switchgear provided with a grounding switch disposed in a grounding device container connected to a disconnecting device side main body container via an insulating spacer. A shaft extending in the axial direction of the insulating spacer along the side surface of the container and the disconnector container, rotatably connected to the shaft, covering the outer peripheral surface of the insulating spacer, and connected to the main body container and the grounding device container; Provided with a shielded conductor.

Further, in the gas insulated switchgear of the present invention, the shield conductor is connected to one end of the main body container, the insulating spacer, and the outer periphery of the grounding device container so that one end is rotatable about the axis and the other end is detachably connected to each other. It is constituted by a pair of conductive members formed in an arc shape along the plane.

Further, the gas insulated switchgear of the present invention is a gas insulated switchgear provided with a grounding switch arranged in a grounding device container connected to a disconnecting device side main body container via an insulating spacer. A shaft supported by one of the container and the disconnector container and extending in a direction perpendicular to the axial direction of the insulating spacer, rotatably connected to the shaft, covering the outer peripheral surface of the insulating spacer and connected to the main container and the grounding container. Provided with a shielded conductor.

Further, in the gas insulated switchgear of the present invention, the shield conductor is rotatably connected to a shaft at a central portion, and is formed in an arc shape along the outer peripheral surfaces of the main body container, the insulating spacer, and the grounding device container. And a pair of conductive members.

Further, in the gas insulated switchgear of the present invention, a spring contact is provided on a surface of the conductive member connected to the main body container and the grounding device container.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 is a front view showing a gas insulated switchgear according to Embodiment 1 of the present invention, FIG. 2 is a sectional view showing an open state of a grounding switch provided in the gas insulated switchgear of FIG. 1, and FIG. FIG. 4 is a perspective view showing the shield conductor shown in FIGS. 2 and 3, and FIG. 5 is a cross-sectional view showing the shielded conductor shown in FIGS. FIG. 6 is a cross-sectional view showing an electrically connected state, FIG. 6 is a cross-sectional view showing a state in which the main body container and the disconnector container are electrically separated by the shield conductor shown in FIGS. 2 and 3, and FIG. FIG. 7 is a cross-sectional view illustrating a state different from FIG. 6 in which the main body side container and the disconnector container are electrically separated by the shield conductor illustrated in FIG. 3.

In FIG. 1, reference numeral 20 denotes a disconnecting switch, reference numeral 21 denotes a circuit breaker, reference numeral 22 denotes a bus, and reference numeral 23 denotes a grounding switch. These components constitute a gas-insulated switchgear. FIG.
3 and 24, reference numeral 24 denotes a disconnector container of the disconnector 20 shown in FIG. 1, and reference numeral 25 denotes a main conductor arranged in the disconnector container 24, and contacts (see FIG. 3) of the disconnector 20 and the circuit breaker 21 shown in FIG. (Not shown). 26 is a fixed contact provided on the main conductor 25, 27 and 28 are electric field relaxation shields, 29
Has one end connected to the disconnector container 24 and the other end
The main body container 31 is constituted by the disconnector container 24 and the connection tube 29.

Reference numeral 32 denotes a grounding container connected to the main body container 31 via an annular insulating spacer 33.
A flange 34 is provided at the third side end. Reference numeral 35 denotes a tubular current-carrying support member fixed to the flange 34, which supports the sliding contact 36 and the electric field relaxation shield 37. Reference numeral 38 denotes a movable contact penetrating the insulating spacer 33 and the current-carrying support member 35 and slidably supported by the sliding contact 36.
It is electrically connected to the ground container 32 via the sliding contact 36.

Reference numeral 39 denotes an operation mechanism for operating the movable contact 38, and the grounding switch 23 is constituted by the fixed contact 26, the movable contact 38, the operation mechanism 39, and the like.
4 to 6, reference numeral 41 denotes a cylindrical conductive member, and four mounting holes 42 and 43 are provided in the vicinity of both ends 41a and 41b in the axial direction at substantially equal intervals in the circumferential direction. ing. Reference numeral 44 denotes a bolt that penetrates through the mounting hole 42 and the energizing spacer 45 and fastens the one end 41 a of the conductive member 41 to the grounding device container 32. Reference numeral 46 denotes a conductive member 41 that penetrates through the mounting hole 43 and the energizing spacer 47.
Is a bolt for tightening and fixing the other end 41b to the main body container 31. The conductive member 41, the bolts 44 and 46, and the conductive spacers 45 and 47 constitute a shield conductor 40.

Next, the operation of the first embodiment will be described. When the disconnector 20 shown in FIG. 1 is turned on, the grounding switch 23 is open as shown in FIG. As shown in FIG. 5, the conductive member 41 has one end 41a fastened to the grounding device container 32 by a bolt 44 inserted into the mounting hole 42 and penetrating the energizing spacer 45, and the other end 41b. Are fastened and fixed to the main body container 31 by bolts 46 inserted into the mounting holes 43 and penetrating the energizing spacers 47. In this state, the shield conductor 4
Reference numeral 0 covers the outer peripheral surface of the insulating spacer 33, and the grounding container 32 and the main body container 31 are electrically connected to each other through the conductive spacer 45, the conductive member 41, and the conductive spacer 47.

In this state, since the shield conductor 40 covers the outer peripheral surface of the insulating spacer 33, it is generated by a steep surge generated when the disconnector 20 is turned on and propagated to the main conductor 25, and Electromagnetic waves radiated toward the insulating spacer 33 through the inside 29 are prevented from leaking outside by the shield conductor 40 covering the outer periphery of the insulating spacer 33. For this reason, it is possible to prevent the electromagnetic waves leaked to the outside through the insulating spacer 33 from adversely affecting the electronic equipment for controlling the gas insulated switchgear.

When grounding the contacts of the circuit breaker 21, FIG.
Is turned on as shown in FIG. Ground switch 2
3, the main conductor 25 is grounded through the fixed contact 26, the movable contact 38, the sliding contact 36, the current-carrying support member 35, the grounding vessel 32, the shield conductor 40, and the main body vessel 31. .

On the other hand, when a test voltage is applied to the contacts of the circuit breaker 21, the bolt 46 is removed and the energizing spacer 47 is removed as shown in FIG. In this state, the conductive member 41 is supported at the original position by the bolt 44 and the conductive spacer 45, but the other end 41 b of the conductive member 41
Is electrically disconnected from the main body container 31.

In this state, the charging side terminal of the test power supply (not shown) is connected to the grounding vessel 32 and the grounding side terminal is connected to the main body vessel 31, so that the circuit breaker 2 is connected.
A test voltage can be applied to one contact.

In the above description, the grounding device container 3
When the main body container 31 is electrically disconnected from the main body container 31 simply as shown in FIG.
As shown in FIG. 7, the bolt 46 has been removed and the energizing spacer 47 has been removed, but as shown in FIG. 7, the conductive member 41 is moved to the grounding device container 32 side,
A bolt 44 is inserted into the mounting hole 43, and the other end 41 b of the conductive member 41 is connected to the grounding device container 32 via the conductive spacer 45.
The outer peripheral surface of the main body container 31 can be made not to be covered with the conductive conductor 41, so that it is easy to secure a place to connect the terminal of the test power supply.

Although the conductive member 41 is integrally formed into a cylindrical shape, the conductive member 41 is divided into two parts in the circumferential direction so that the conductive member 41 is divided into the main body container 31 and the grounding device container. 32 can be completely removed, and a sufficient space for connecting the terminals of the test power supply can be secured.

Embodiment 2 FIG. FIG. 8 is a perspective view showing a conductive member constituting a shield conductor of the gas insulated switchgear according to Embodiment 2 of the present invention, FIG. 9 is a cross-sectional view showing the configuration of the gas insulated switchgear of FIG. 8, and FIG. It is sectional drawing which shows the state which the main body container and disconnector container of the gas insulated switchgear of 9 were electrically separated. In the figure, the same or corresponding parts as in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 48,
Reference numeral 49 denotes a pair of conductive members formed in a cylindrical shape as shown in FIG. 8, and a connecting portion 52 having bolt holes 50 and 51 provided at radially opposite positions of respective axial ends,
53 is formed, and an axially long mounting hole 54,
Four 55 are provided in the circumferential direction.

Reference numeral 56 denotes a bolt which is inserted into the mounting hole 54 of the conductive member 48 and tightens and fixes the conductive member 48 to the grounding device container 32 via the conductive spacer 57. Reference numeral 58 denotes a bolt inserted into the mounting hole 55 of the conductive member 49. Then, bolts 60 for fastening the conductive member 49 to the main body container 31 via the energizing spacer 59 and 60 are bolts inserted into the bolt holes 50 and 51 shown in FIG. 8 to press the connecting portions 52 and 53 together. A shield conductor 61 is formed by the conductive member 48, the bolt 56, and the conductive spacer 57,
The shield conductor 62 is constituted by the conductive member 49, the bolt 58 and the energizing spacer 59.

According to the state shown in FIG.
Is covered with the conductive members 48 and 49, so that electromagnetic waves are prevented from leaking outside through the insulating spacer 33. The conductive spacer 57, the conductive member 48, and the conductive member 4 are provided between the grounding device container 32 and the main container 31.
9. Electrically connected by the energizing spacer 59. Therefore, by turning on the grounding switch 23, the contact of the circuit breaker 21 can be grounded.

When a test voltage is applied to the circuit breaker 21, the bolt 60 is first removed as shown in FIG. Then, the bolts 56, 58 are loosened, and the two conductive members 48, 4
9 in the direction away from it, leaving a space between the connecting parts 52 and 53. Then, with the space between the connecting portions 52 and 53, the two conductive members 48 are again connected to the grounding device container 3.
2 and, at the same time, the conductive member 49 is fastened and fixed to the main body container 31 via the conductive spacer 59. In this state, since the conductive member conductors 48 and 49 are separated from each other, the grounding device container 32 and the main container 31 are electrically disconnected from each other, and the grounding device container 32 and the main container 31 are separated.
And a test voltage can be applied.

Embodiment 3 FIG. 11 is a front view showing a configuration of a gas insulated switchgear according to Embodiment 3 of the present invention.
FIG. 13 is a cross-sectional view showing a state in which the shield conductor of FIG. 11 is rotated in a direction away from the outer peripheral surface of the insulating spacer, and FIG.
FIG. 13 is a perspective view of the spring contact element shown in FIGS. 1 and 12. In the drawings, the same or corresponding parts as those in the above embodiments are denoted by the same reference numerals, and description thereof will be omitted. 63 is an L-shaped support member formed of an insulator provided on the grounding device container 32, 64 is a plate-shaped support member formed of an insulator provided on the main body container 31, 65 is the support member 63, The shafts 66, 67, which are supported by 64 and extend in the axial direction of the insulating spacer 33 along the side surfaces of the main body container 31 and the grounding device container 32, are provided on the outer peripheral surfaces of the main body container 31, the insulating spacer 33 and the grounding device container 32. A pair of conductive members formed in a semicircular shape along one end and having one end portions 66a and 67a rotatably connected to the shaft 65, and a connecting portion 70 provided with bolt holes 68 and 69 at the other end portion; 7
1 is formed.

Reference numeral 72 denotes a bolt which is inserted into the bolt holes 68 and 69 to fasten the connecting portions 70 and 71 to each other. As shown in FIG.
The spring contact 73 is attached to the inner surface of each conductive member 66, 67 on the side connected to the grounding device container 32, and the spring contact 74 is connected to each conductive member 6
6 and 67 are attached to the inner surface of the side connected to the main body container 31. The pair of conductive members 66 and 67 and the spring contacts 73 and 74 constitute a shield conductor 75.

According to the state shown in FIG.
Since 6, 67 cover the outer peripheral surface of the insulating spacer 33, leakage of the electromagnetic wave to the outside through the insulating spacer 33 is prevented. In addition, the spring contact 73 is
, And the spring contact 74 is in contact with the main body container 31.
3. It is electrically connected to the main body container 31 via the conductive members 66 and 67 and the spring contact 74.

When a test voltage is applied to the circuit breaker 21, the bolt 72 is removed and the conductive members 66 and 67 are rotated in a direction away from the outer peripheral surface of the insulating spacer 33, as shown in FIG. In this state, the spring contact 73 separates from the grounding container 32 and the spring contact 74 separates from the main container 31, so that the grounding container 32 is
1 is electrically disconnected.

According to the third embodiment, the grounding device container 32 can be easily separated from the main container 31 by rotating the shield conductor 75. When the grounding device container 32 is separated from the main container 31, the conductive members 66 and 67 are in an open state, and the grounding device container 32 is opened.
Since the body container 31 is exposed on the side opposite to the position where the shaft 64 is provided on the outer peripheral surface, it is possible to easily secure a place for attaching a terminal of the test power supply. In the above description, the case where the spring contacts 73 and 74 are attached to the conductive members 66 and 67 has been described.
The same effect can be obtained by attaching 3, 74 to the grounding device container 32 and the main container 31 side.

Embodiment 4 FIG. FIG. 14 is a cross-sectional view showing a configuration of the gas insulated switchgear shown in Embodiment 4 of the present invention, and FIG. 15 is a cross-sectional view showing a state in which the shield conductor of FIG. 14 is rotated in a direction away from the outer peripheral surface of the insulating spacer. is there.

In the drawings, the same or corresponding parts as those in the above embodiments are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 76 denotes a pair of support members fixed at respective positions radially opposed to each other on the outer peripheral surface of the grounding device container 32, and provided with a shaft 77 extending in a direction perpendicular to the axial direction of the insulating spacer 33. 7
8 and 79 are formed in a semicircular shape along the outer peripheral surfaces of the main body container 31, the insulating spacer 33 and the grounding device container 32, and the central portion of each outer peripheral surface is rotatable about the shaft 77 via the support arm 80. A bolt hole 81 is provided at an end of a pair of connected conductive members.

A spring contact 73 is provided on the inner surface of the conductive member 78, 79 on the side connected to the grounding device container 32, and a spring contact 74 is provided on the inner surface on the side connected to the main body container 31. I have. A shield conductor 82 is formed by the conductive members 78 and 79 and the spring contacts 73 and 74. 83 is inserted into the bolt hole 81, and although not shown, the conductive members 78 and 79 are screwed into the screw holes formed on the main body container 31 side so that the conductive members 78 and 79 are connected to the main body container 31.
It is a bolt to be fixed to.

According to the state shown in FIG.
7, 7 and 78 cover the outer peripheral surface of the insulating spacer 33, so that the electromagnetic wave is prevented from leaking outside through the insulating spacer 33. In addition, the spring contact 73 is
And the spring contact 74 contacts the main body container 31, and the grounding device container 32 is electrically connected to the main body container 31 via the spring contact 73, the conductive members 66 and 67, and the spring contact 74. It is connected to the. In this state, the contact of the circuit breaker 21 can be grounded by turning on the grounding switch 23.

When a test voltage is applied to the circuit breaker 21, as shown in FIG. 15, the bolt 83 is removed, and the conductive members 77 and 78 are opened by rotating in a direction away from the outer peripheral surface of the insulating spacer 33. Keep it. In this state, the spring contact 73 separates from the grounding vessel 32 and the spring contact 74 separates from the main body container 31.
1 is electrically disconnected.

According to the fourth embodiment, the grounding container 32 can be easily separated from the main container 31 by rotating the shield conductor 82. When the grounding device container 32 is separated from the main container 31, the conductive members 77 and 78 are opened, and the grounding device container 32 is opened.
In addition, since the outer peripheral surface of the main body container 31 is exposed, a place for attaching the terminal of the test power source can be easily secured.

[0041]

According to the gas insulated switchgear of the present invention,
In a gas insulated switchgear provided with a grounding switch arranged in a grounding device container connected to a disconnecting device side main body container via an insulating spacer, a shaft of the insulating spacer is disposed so as to cover an outer peripheral surface of the insulating spacer. Both ends in the direction are connected to the main body container and the grounding device container, and at least one of the both ends is provided with a shield conductor that can be separated and separated, so that the electromagnetic wave radiated by the steep surge generated when the disconnector is turned on is insulated This has the effect of preventing leakage to the outside through the spacer and of electrically disconnecting the main body container and the grounding device container when a test voltage is applied.

According to the gas insulated switchgear of the present invention, the shield conductor is disposed between the cylindrical conductive member, and both ends of the conductive member and one of the main body container and the grounding device container. Since the power supply spacer is made up of bolts that fasten and fix the conductive member to the main body container and the grounding device container via the power supply spacer, the electromagnetic wave radiated by the steep surge generated when the disconnector is turned on is used as the insulating spacer. Leakage to the outside through the device, and at the time of applying a test voltage, there is an effect that the main container and the grounding device container can be electrically disconnected.

Further, according to the gas insulated switchgear of the present invention, there is provided a gas insulated switchgear provided with a grounding switch arranged in a grounding device container connected to the disconnector-side body container via an insulating spacer. A pair of shield conductors arranged so as to cover the outer peripheral surface of the insulating spacer, one end in the axial direction of the insulating spacer is connected to one of the main body container and the grounding device container, and the other end is arranged so as to be able to contact and separate from each other. As a result, the electromagnetic wave radiated by the steep wave surge generated when the disconnector is turned on can be prevented from leaking outside through the insulating spacer, and when the test voltage is applied, the electromagnetic wave between the main body container and the grounding device container can be prevented. There is an effect that the space can be electrically separated.

According to the gas insulated switchgear of the present invention, the shield conductor is disposed between the cylindrical conductive member, and both ends of the conductive member and one of the main body container and the grounding device container. And a bolt for fastening the conductive member to one of the main body container and the grounding device container via the conductive spacer, so that the conductive member is radiated by a steep surge generated when the disconnector is turned on. It is possible to prevent the electromagnetic wave from leaking to the outside through the insulating spacer, and to electrically disconnect the main body container and the grounding device container when a test voltage is applied.

Further, according to the gas insulated switchgear of the present invention, there is provided a gas insulated switchgear provided with a grounding switch arranged in a grounding device container connected to the disconnector-side main body container via an insulating spacer. A shaft extending in the axial direction of the insulating spacer along a side surface of the main body container and the disconnector container, rotatably connected to the shaft, covering an outer peripheral surface of the insulating spacer, and also including the main body container and the grounding device container The shield conductor connected to the main body prevents the electromagnetic waves radiated by the steep surge generated when the disconnector is turned on from leaking through the insulating spacer to the outside. There is an effect that the container and the grounding device container can be electrically separated. Also,
When the main body container and the grounding device container are separated from each other, there is an effect that a place for attaching the terminal of the test power source can be easily secured.

According to the gas insulated switchgear of the present invention, the shield conductor is connected to the one end so as to be rotatable about the axis and the other end is detachably connected to each other, so that the main body container, the insulating spacer and the grounding device container are provided. The electromagnetic wave radiated by the steep surge generated when the disconnector is turned on is prevented from leaking outside through the insulating spacer because it is composed of a pair of conductive members formed in an arc shape along the outer peripheral surface of In addition, when the test voltage is applied, the main container and the grounding container can be electrically disconnected. Further, when the main body container and the grounding device container are separated from each other, there is an effect that a place for attaching the terminal of the test power source can be easily secured.

Further, according to the gas insulated switchgear of the present invention, in the gas insulated switchgear provided with the grounding switch arranged in the grounding device container connected to the disconnector-side body container via the insulating spacer. A shaft that is supported by one of the main body container and the disconnector container and that extends in a direction perpendicular to the axial direction of the insulating spacer, is rotatably connected to the shaft, covers the outer peripheral surface of the insulating spacer, and includes the main body container and the grounding device container The shield conductor connected to the main body prevents the electromagnetic waves radiated by the steep surge generated when the disconnector is turned on from leaking through the insulating spacer to the outside. There is an effect that the container and the grounding device container can be electrically separated. Also,
When the main body container and the grounding device container are separated from each other, there is an effect that a place for attaching the terminal of the test power source can be easily secured.

Further, in the gas insulated switchgear of the present invention, the shield conductor is rotatably connected at the center to the shaft, and is formed in an arc shape along the outer peripheral surfaces of the main body container, the insulating spacer and the grounding device container. Since it is composed of a pair of conductive members, the electromagnetic wave radiated by the steep surge generated when the disconnector is turned on can be prevented from leaking to the outside through the insulating spacer. There is an effect that the container and the grounding device container can be electrically separated. Further, when the main body container and the grounding device container are separated from each other, there is an effect that a place for attaching the terminal of the test power source can be easily secured.

Further, according to the gas insulated switchgear of the present invention, the main body container, the insulating spacer, and the main body container and the grounding device container formed of a pair of conductive members formed in an arc shape along the outer peripheral surfaces of the grounding device container. Since the spring contact is provided on the surface to be connected, there is an effect that the electrical connection between the main body container and the grounding device container and the conductive member can be reliably performed.

[Brief description of the drawings]

FIG. 1 is a front view showing a gas-insulated switchgear according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view showing an open state of a grounding switch provided in the gas insulated switchgear of FIG.

FIG. 3 is a sectional view showing a closed state of the grounding switch of FIG. 2;

FIG. 4 is a perspective view showing the shield conductor shown in FIGS. 2 and 3;

FIG. 5 is a cross-sectional view showing a state where the main body container and the disconnector container are electrically connected by the shield conductor shown in FIGS. 2 and 3.

FIG. 6 is a cross-sectional view showing a state in which the main body container and the disconnector container are electrically separated by the shield conductor shown in FIGS. 2 and 3.

FIG. 7 is a cross-sectional view showing a state different from FIG. 6 in which the main body side container and the disconnector container are electrically separated by the shield conductor shown in FIGS. 2 and 3;

FIG. 8 is a perspective view showing a conductive member constituting a shield conductor of the gas insulated switchgear according to Embodiment 2 of the present invention.

9 is a cross-sectional view illustrating a configuration of the gas insulated switchgear of FIG.

10 is a cross-sectional view showing a state in which a main body container and a disconnector container of the gas insulated switchgear of FIG. 9 are electrically separated.

FIG. 11 is a front view showing a configuration of a gas-insulated switchgear according to Embodiment 3 of the present invention.

12 is a cross-sectional view showing a state in which the shield conductor of FIG. 11 is rotated in a direction away from the outer peripheral surface of the insulating spacer.

FIG. 13 is a perspective view of the spring contact shown in FIGS. 11 and 12;

FIG. 14 is a cross-sectional view showing a configuration of a gas-insulated switchgear shown in Embodiment 4 of the present invention.

FIG. 15 is a cross-sectional view showing a state where the shield conductor of FIG. 14 is rotated in a direction away from the outer peripheral surface of the insulating spacer.

FIG. 16 is a sectional view showing a conventional gas insulated switchgear.

[Explanation of symbols]

Reference Signs List 20 disconnector, 21 circuit breaker, 22 busbar, 23 ground switch, 24 disconnector vessel, 25 main conductor, 26 fixed contact, 27, 28 electric field mitigation shield, 29 connection pipe, 30 flange, 31 main body vessel, 32 ground Container, 33 insulating spacer, 34 flange, 35 current-carrying support member, 36 sliding contact, 37 electric field relaxation shield, 38 movable contact, 39 operation mechanism, 40 shield conductor, 41 conductive member, 41a, 41b end, 4
2, 43 mounting hole, 44 bolt, 45 energizing spacer, 46 bolt, 47 energizing spacer, 48, 49
Conductive member, 50, 51 bolt hole, 52, 53 connecting part, 54, 55 mounting hole, 56 volt, 57 conducting spacer, 58 volt, 59 conducting spacer, 60 volt, 61 shield conductor, 62 shield conductor, 63
Support member, 64 Support member, 65 axes, 66, 67
Conductive member, 68, 69 bolt hole, 70, 71 connecting portion, 72 bolt, 73, 74 spring contact, 75 shield conductor, 76 support member, 77 shaft, 78, 79
Conductive member, 80 support arm, 81 bolt hole, 82 shield conductor, 83 bolt.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02B 13/04 E (72) Inventor Hiroyuki Hama 2-3-2 Marunouchi 2-chome, Chiyoda-ku, Tokyo Mitsubishi Electric F term in the company (reference) 5G017 BB02 BB05 BB07 FF03 FF08 5G365 DD01 DH11

Claims (9)

[Claims] 1. A gas insulated switchgear provided with a grounding switch disposed in a grounding device container connected to a disconnecting device side main body container via an insulating spacer so as to cover an outer peripheral surface of the insulating spacer. A gas-insulated switchgear, wherein both ends of the insulating spacer in the axial direction are connected to the main container and the grounding device container, and at least one of the both ends is provided with a shield conductor that can be separated from and separated from the main container. 2. A shield conductor comprising: a cylindrical conductive member; a current-carrying spacer disposed between both ends of the conductive member and one of the main body container and the grounding device container; 2. The gas insulated switchgear according to claim 1, wherein the gas insulated switchgear is constituted by a bolt for fastening the conductive member to the main body container and the grounding device container via a bolt. 3. 3. A gas insulated switchgear provided with a grounding switch disposed in a grounding device container connected to a disconnecting device side main body container via an insulating spacer, so as to cover an outer peripheral surface of the insulating spacer. And a pair of shield conductors, wherein one end in the axial direction of the insulating spacer is connected to one of the main body container and the grounding device container, and the other end is disposed so as to be able to contact and separate from each other. Gas insulated switchgear. 4. A shield conductor comprising: a cylindrical conductive member; a current-carrying spacer disposed between both ends of the conductive member and one of the main body container and the grounding device container; The gas insulated switchgear according to claim 3, characterized in that the gas insulated switchgear is constituted by a bolt for fastening the conductive member to one of the main body container and the grounding device container via a bolt. 5. A gas insulated switchgear provided with a grounding switch disposed in a grounding device container connected to a disconnecting device-side main container via an insulating spacer, wherein a side surface of the main container and the disconnecting device container is provided. A shaft extending in the axial direction of the insulating spacer along the axis, a shield conductor rotatably connected to the shaft, covering an outer peripheral surface of the insulating spacer, and connected to the main body container and the grounding device container. A gas insulated switchgear characterized in that: 6. The shield conductor has one end rotatably connected to the shaft and the other end detachably connected to each other, and is formed in an arc shape along the outer peripheral surfaces of the main body container, the insulating spacer, and the grounding device container. The gas insulated switchgear according to claim 5, comprising a pair of conductive members. 7. A gas insulated switchgear provided with a grounding switch disposed in a grounding device container connected to a disconnecting device side main container via an insulating spacer, wherein one of the main body container and the disconnecting device container is provided. A shaft extending in a direction perpendicular to the axial direction of the insulating spacer, rotatably connected to the shaft, covering the outer peripheral surface of the insulating spacer, and connected to the main body container and the grounding device container. A gas insulated switchgear comprising a shield conductor. 8. The shield conductor has a central portion rotatably connected to a shaft, and includes a pair of conductive members formed in an arc shape along the outer peripheral surface of the main body container, the insulating spacer, and the grounding device container. The gas-insulated switchgear according to claim 7, wherein 9. The gas insulated switchgear according to claim 6, wherein a spring contact is provided on a surface of the conductive member connected to the main body container and the grounding device container.