KR102569088B1 - Gas insulation switchgear - Google Patents

Abstract

One embodiment of the gas insulated switchgear includes a first fixed part body having a first fixed contact point, a first movable contact point disposed to face the first fixed part body, and disposed to face the first fixed contact point. Including, a first movable body that moves with respect to the first fixed body and energizes or turns off the first fixed contact and the first movable contact, and coupled to the first fixed body, but spaced apart from the first fixed body and a second fixing body having a second fixing contact.

Description

Gas insulated switchgear {GAS INSULATION SWITCHGEAR}

The present invention relates to a gas insulated switchgear, and more particularly, to a gas insulated switchgear used for high-power energization and power-off.

The information described in this section simply provides background information on the present invention and does not constitute prior art.

Gas INSULATION SWITCHGEAR is a switchgear using sulfur hexafluoride (SF ₆ ) gas, and is generally abbreviated as GIS.

This gas insulated switchgear can reduce the size and improve stability during use by filling the circuit breaker, switchgear and busbar connection having excellent arc extinguishing performance and stable insulation characteristics with SF ₆ gas and putting them in an airtight container. It is used in various fields.

On the other hand, in a circuit breaker provided in a gas insulated switchgear used in a high-voltage, high-power, large-capacity power system, a closing resistance unit is used to suppress overvoltage generated when the moving part is closed to the fixed part.

In the gas insulated switchgear, there is a triple point where a conductor, an insulator, and an insulating gas come into contact with each other, and an arc due to high power and high voltage can easily occur in the vicinity of the triple point.

Although the insulator and insulating gas provided in the gas insulated switchgear can suppress the generation of an arc at the moment when the system is energized, since the triple point exists in the gas insulated switchgear, an arc still occurs and thus the gas insulated switchgear Insulation to earth and arc extinguishing performance may be a problem. Improvement on this is required.

An object of the present invention is to provide a gas insulated switchgear having a structure with improved ground insulation and arc extinguishing performance.

Another object of the present invention is to provide a gas insulated switchgear having a structure in which durability is improved and the volume of the gas insulated switchgear can be reduced.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

One embodiment of the gas insulated switchgear includes a first fixed part body having a first fixed contact point, a first movable contact point disposed to face the first fixed part body, and disposed to face the first fixed contact point. Including, a first movable body that moves with respect to the first fixed body and energizes or turns off the first fixed contact and the first movable contact, and coupled to the first fixed body, but spaced apart from the first fixed body and a second fixing body having a second fixing contact.

One embodiment of the gas insulated switchgear is a coupling part for coupling the first fixed part body and the second fixed part body to each other, combined with the first movable part body but arranged to face the second fixed part body, and the second fixing part A second movable body including a second movable contact disposed to face the contact, and moving with respect to the second fixed body to energize or turn off the second fixed contact and the second movable contact, and the first fixed body and a second fixed unit body, respectively, electrically connected to each other, and when the second fixed unit contact and the second movable unit contact are energized, the input resistance portion may be further included.

The second fixing unit body is formed to surround at least a portion of the conductor electrically connected to the second fixing contact and the input resistance unit, a support tube supporting the conductor and at least a portion of the support tube, and coupling It may include an insulator coupled to the unit and formed of an electrically insulating material.

One embodiment of the gas insulated switchgear further includes a coupling mechanism fastened through the coupling portion, the insulation insulator, and the insulation washer at a contact portion between the coupling portion and the insulator, and the end of the coupling mechanism is external to the insulator. A through hole mounted to be exposed may be formed.

One embodiment of the gas insulated switchgear may further include an insulating washer disposed at a contact portion between the coupling mechanism and the insulator and formed of an electrically insulating material.

The through hole may be provided to have a predetermined depth such that an exposed end of the coupling mechanism is spaced apart from an inlet of the through hole when the coupling mechanism is mounted in the through hole.

The insulation insulator may be formed of a fiber-reinforced plastic material.

One embodiment of the gas insulated switchgear may further include a supporter coupled to the first fixing body and protruding in a direction crossing the longitudinal direction of the first fixing body.

The center of the second fixing body may be disposed on an imaginary line passing through the center of the supporter and the center of the first fixing body.

The conductor may be electrically connected to a lower portion of the input resistance unit and disposed in a straight line toward a contact point connected to the input resistance unit.

In the gas insulated switchgear according to the present invention, the exposed end of the coupling mechanism is provided to have a predetermined depth so as to be spaced apart from the inlet of the through hole, so that arc generation at the end of the coupling mechanism is effectively prevented when the gas insulated switchgear is energized. By suppressing it, ground insulation and arc extinguishing performance can be improved.

In addition, in the gas insulated switchgear according to the present invention, the center of the second fixing body is arranged on a virtual line passing through the center of the supporter and the center of the first fixing body, effectively suppressing the torsional moment applied to the support By doing so, it is possible to improve the durability of the supporter and the gas insulated switchgear including the supporter.

In addition, in the gas insulated switchgear according to the present invention, the center of the second fixing body is disposed on a virtual line passing through the center of the supporter and the center of the first fixing body, so that the center of the second fixing body is the virtual line Compared to a structure that deviates from , the range in which an electric field is formed can be narrowed.

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a cross-sectional view of a gas insulated switchgear according to an embodiment.
FIG. 2 is an enlarged view of part A of FIG. 1 .
Figure 3 is a perspective view of Figure 2;
4 is a perspective view illustrating an insulation insulator according to an exemplary embodiment.
FIG. 5 is an enlarged view of a part of FIG. 2 .
6 is a cross-sectional view viewed in the XX direction in FIG. 1;

The above objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs will be able to easily implement the technical spirit of the present invention. In describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another component, and unless otherwise stated, the first component may be the second component, of course.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

Singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some of the steps It should be construed that it may not be included, or may further include additional components or steps.

Throughout the specification, when "A and/or B" is used, this means A, B or A and B unless otherwise specified, and when used as "C to D", this means unless otherwise specified As long as there is no, it means C or more and D or less.

1 is a cross-sectional view of a gas insulated switchgear according to an embodiment. GAS INSULATION SWITCHGEAR (GIS) is a power switching device used for energization or energization-off operation of a power system to which a high voltage is applied.

In the gas insulated switchgear, in order to increase the performance of suppressing the occurrence of an arc, that is, the arc extinguishing performance at the moment of energization of power opening, the energization device including the contact of the fixed part and the contact of the movable part is housed in the enclosure 10, and the enclosure 10 ) can be filled with insulating gas, for example, SF ₆ .

The insulating gas suppresses an arc generated at the moment when the energizing device is energized from being radiated toward the enclosure 10, thereby improving insulation performance between the energizing device and the ground.

In the gas insulated switchgear, there is a triple point where a conductor, an insulator, and an insulating gas come into contact with each other, and an arc due to high power and high voltage can easily occur in the vicinity of the triple point.

Although the insulator and insulating gas provided in the gas insulated switchgear can suppress the generation of an arc at the moment when the system is energized, since the triple point exists in the gas insulated switchgear, an arc still occurs and thus the gas insulated switchgear Insulation to earth and arc extinguishing performance may be a problem.

Therefore, the embodiment provides a gas insulated switchgear having a structure with improved ground insulation and arc extinguishing performance.

In addition, the embodiment provides a gas insulated switchgear having a structure in which durability is improved and the volume of the gas insulated switchgear can be reduced.

Referring to FIG. 1, the gas insulated switchgear according to the embodiment includes a first fixed body 100, a first movable body 200, a supporter 300, a second fixed body 400, and a coupling part 500. ), the second movable body 600 and the input resistance unit 700 may be included.

The first fixing part body 100 has a first fixing contact point 110 and can be disposed in a fixed position without moving by being coupled to the supporter 300 . The first fixed contact point 110 may be in contact with the first movable contact point 210 and conduct electricity to each other.

The first movable part body 200 may include a first movable part contact 210 disposed to face the first fixed part body 100 and to face the first fixed part contact 110 . The first movable part body 200 can move with respect to the first fixed part body 100 to turn on or off the first fixed part contact 110 and the first movable part contact 210 .

In order to smooth the contact between the first fixed contact 110 and the first movable contact 210, the first movable body 200 has a first fixed contact 110 as shown in FIG. A guide device 220 for guiding the movement of may be provided.

The supporter 300 may be coupled to the first fixing body 100 and protrude in a direction crossing the longitudinal direction of the first fixing body 100 . When energized, the first movable body 200 and the second movable body 600 may be electrically connected to the supporter 300, and the supporter 300 may be electrically connected to an external power system.

The second fixing part body 400 is coupled to the first fixing part body 100, but is spaced apart from the first fixing part body 100, and may have a second fixing part contact point 410. The second fixed contact point 410 may be in contact with the second movable contact point 610 and conduct electricity to each other.

The coupling part 500 may couple the first fixing part body 100 and the second fixing part body 400 to each other. The coupling part 500 may be made of the same material as the first fixing part body 100 . At this time, the first fixing part body 100 and the coupling part 500 may be integrally formed. The first fixing part body 100 and the coupling part 500 may be formed of a conductive material, for example, aluminum.

The second movable body 600 is combined with the first movable body 200, but is disposed to face the second fixed body 400, and the second fixed part 410 is disposed to face. A movable part contact 610 may be included. The second movable part body 600 can move with respect to the second fixed part body 400 to turn on or off the second fixed part contact 410 and the second movable part contact 610 .

The closing resistance part 700 is electrically connected to the first fixed part body 100 and the second fixed part body 400, respectively, and the second fixed part contact point 410 and the second movable part contact point 610 ) can be energized if it is energized.

When the first fixed contact point 110 and the first movable contact point 210 contact each other and are energized, a high current flows at the moment they are energized due to high power, and thus the energization may become unstable. Therefore, for stable energization, energization may be performed in the following order.

In the power-off state, the distance between the second fixed contact 410 and the second movable contact is shorter than the distance between the first fixed contact 110 and the first movable contact. Therefore, when the first movable part body 200 moves in the direction of the first fixed part body 100, the second fixed contact 410 and the second movable part contact first and can be energized.

At this time, since the second fixed contact point 410 is provided in the form of a push button elastically supported by an elastic member, the first movable part body 200 continues even after contact between the second fixed contact point 410 and the second movable contact point 410. continues to move so that the first fixed contact point 110 and the first movable contact point 210 come into contact with each other.

Due to the structure described above, when the second movable contact point 610 and the second fixed contact point 410 contact each other, current is applied to the second movable contact point 610, the second fixed contact point 410, and the input resistance unit. 700, current may initially flow in the direction of the first fixing body 100 and the supporter 300.

Next, when the first movable contact 210 and the first fixed contact 110 come into contact with each other, they are energized, and the first movable contact 210, the first fixed contact 110, and the first fixed part body 100 ) and a current may flow in the direction of the supporter 300 .

The second fixing part body 400 may have a structure electrically insulated from the first fixing part body 100 made of a conductive material and the coupling part 500 and electrically connected to the input resistance part 700 . Accordingly, the second fixing body 400 according to the embodiment may include a conductor 420, a support pipe 430, and an insulator 440 in addition to the second fixing contact 410.

The conductor 420 may be electrically connected to the second fixed contact point 410 and the input resistance unit 700 . The conductor 420 is formed of a conductor and may be provided in a bar shape.

The support pipe 430 may surround at least a portion of the conductor 420 and support the conductor 420 . The support pipe 430 may be formed of an insulator to suppress an arc from occurring between the conductor 420 and the first fixing body 100 provided as a conductor at the moment of energization.

The insulator 440 is formed to surround at least a portion of the support pipe 430, is coupled to the coupling part 500, and may be formed of an electrical insulating material. The insulator 440 couples the second fixing body 400 to the coupling part 500 and serves to electrically insulate between the first fixing body 100 and the conductor 420 provided as a conductor. can do.

The insulation insulator 440 is a material with excellent insulation, light weight, excellent impact resistance and durability, and excellent workability so that it can withstand the impact generated when the second fixed contact and the second movable contact collide at the moment when electricity is applied. It is appropriate to form Accordingly, the insulator 440 may be formed of a fiber reinforced plastics (FRP) material.

Hereinafter, the structure of the second fixing body 400 will be described in more detail with reference to the drawings. FIG. 2 is an enlarged view of part A of FIG. 1 . Figure 3 is a perspective view of Figure 2; 4 is a perspective view illustrating an insulator 440 according to an exemplary embodiment. FIG. 5 is an enlarged view of a part of FIG. 2 .

Insulation switchgear according to the embodiment is fastened by penetrating the coupling portion 500, the insulation insulator 440, and the insulation washer 810 at a contact portion between the coupling portion 500 and the insulator 440. A coupling mechanism 820 may be further included. The coupling mechanism 820 may be provided with, for example, a bolt having a screw thread, and may be formed of a conductor.

As shown in FIG. 2 , the insulators 440 may be provided as a pair. A pair of insulators 440 are disposed symmetrically on both sides of the coupling part 500, and can be coupled by the coupling mechanism 820. At this time, the coupling mechanism 820 may be provided with a nut 821 to couple the insulator 440 and the coupling portion 500 to each other.

Meanwhile, the coupling part 500 may have a ring-shaped portion to surround the support pipe 430 . The support pipe 430 may be mounted through the coupling part 500 . A ring-shaped support member 830 disposed between the support pipe 430 and the coupling portion 500 may be mounted at a portion where the support pipe 430 passes through the coupling portion 500 and is mounted.

Referring to FIG. 4 , a hollow portion 443 may be formed in the insulator 440 through which the conductor 420 is inserted and one end of the support tube 430 is mounted. The hollow part 443 may have a large diameter part where the end of the support pipe 430 is mounted and a small diameter part other than that.

A through hole 441 may be formed in the insulator 440 to expose an end of the coupling mechanism 820 to the outside. The plurality of through holes 441 may be provided, and each through hole 441 may be arranged at regular intervals in the circumferential direction of the insulator 440 .

Since the coupling mechanism 820 is inserted into each through hole 441, the number of through holes 441 can be appropriately selected so that the insulator 440 can be stably disposed in the coupling part 500.

The gas insulated switchgear according to the embodiment may further include an insulating washer 810 disposed at a contact portion between the coupling mechanism 820 and the insulator 440 and made of an electrically insulating material.

A washer may be provided when the insulator 440 and the coupling part 500 are fastened using the coupling mechanism 820 provided in the form of a bolt. When such a washer is made of a conductive material, an arc may be generated from the washer.

Therefore, in the embodiment, in order to suppress arc generation in the washer and improve electrical insulation between the coupling mechanism 820, which is a conductor, and the conductor 420 or the first movable body 200, an insulating washer provided with an insulating material (810). The insulating washers 810 may be provided at both ends of the coupling mechanism 820 to which the nuts 821 are fastened, and may be mounted at portions where the nuts 821 and the insulator 440 face each other.

A through hole 442 communicating with the through hole 441 and through which the coupling mechanism 820 passes may be formed in a portion of the insulator 440 where the through hole 441 is formed. The diameter of the through hole 442 is smaller than the diameter of the through hole 441, and may be designed to have an appropriate size so that the coupling mechanism 820 can be stably mounted.

In the gas insulated switchgear, a triple point, which is a point where a conductor, an insulator, and an insulating gas meet each other at the same time, can be formed, and an arc can easily occur at this triple point.

Therefore, in order to suppress the generation of an arc at the moment when the gas insulated switchgear is energized, a structure that prevents the occurrence of the triple point, that is, hides the triple point is required.

However, in the structure according to the embodiment, the triple point may occur at both ends of the coupling mechanism 820 to which the nut 821 is mounted. Therefore, there is a need for a structure that suppresses arc generation even at such a triple point.

The closer the distance between the exposed end of the coupling mechanism 820 at the triple point, that is, between the nut 821 and the first fixing body 100 or between the nut 821 and the conductor 420, the smaller the arc between them. can easily occur.

Therefore, the occurrence of an arc is prevented by making the distance between the nut 821 and the first fixing body 100 or between the nut 821 and the conductor 420 not face each other, or by forming a long distance between the nut 821 and the conductor 420. can be suppressed

Therefore, in order to suppress the occurrence of an arc in the embodiment, the through hole 441 is the exposed end of the coupling mechanism 820 when the coupling mechanism 820 is mounted in the through hole 441. It may be provided to have a predetermined depth to be spaced apart from the entrance of the hole 441 .

Due to the structure described above, most of the portion facing each other between the nut 821 and the first fixing body 100 or between the nut 821 and the conductor 420 can be blocked by the insulator 440. there is. In addition, even if the parts facing each other occur, the separation distance between them may be considerably increased.

At this time, it is appropriate that the depth of the through hole 441 is designed so that no part facing each other occurs between the nut 821 and the first fixing body 100 or between the nut 821 and the conductor 420. .

In the embodiment, the exposed end of the coupling mechanism 820 is provided to have a predetermined depth so as to be spaced apart from the inlet of the through hole 441, so that an arc is generated at the end of the coupling mechanism 820 when the gas insulated switchgear is energized. By effectively suppressing the occurrence, the ground insulation and arc extinguishing performance can be improved.

6 is a cross-sectional view viewed in the XX direction in FIG. 1; As shown in FIG. 6 , the second fixing body 400 is disposed on an imaginary line PL passing through the center of the supporter 300 and the center of the first fixing body 100. may be provided.

In the gas insulated switchgear according to the embodiment, the second fixed contact point and the second movable contact point collide with each other at the moment of being energized, and an impact may occur. Such an impact may be applied to the supporter 300 supporting each part.

That is, the supporter 300 may receive a bending moment due to an impact in which the second fixed contact point and the second movable contact point collide with each other. If the second fixing part body 400 deviates from the imaginary line PL, a torsional moment may be applied to the supporter 300 .

As the gas insulated switchgear is used for a long period of time, an impact in which the second fixed contact and the second movable contact collide with each other may repeatedly occur. If the center of the second fixing body 400 is out of the virtual line PL, a torsional moment may be repeatedly applied to the supporter 300 . For this reason, the life of the supporter 300 may be shortened due to the repeatedly acting torsional moment.

In the embodiment, the center of the second fixing body 400 is disposed on the imaginary line PL passing through the center of the supporter 300 and the center of the first fixing body 100, so that the torsional moment in the support is By effectively suppressing the applied pressure, durability of the supporter 300 and the gas insulated switchgear including the supporter 300 can be improved.

On the other hand, in the structure according to the embodiment in which the center of the second fixing body 400 is disposed on the imaginary line PL passing through the center of the supporter 300 and the center of the first fixing body 100, the electric field ( An electric field (EF) may surround each part and be formed in the form shown in FIG. 6 .

The enclosure 10 having a circular cross section needs to be spaced apart from the electric field EF by a predetermined distance in order to increase insulation to ground. In an embodiment, the electric field EF may have an approximately elliptical shape with a long axis in a vertical direction along the virtual line PL, that is, in a direction of the virtual line PL.

If the center of the second fixing body 400 is out of the virtual line PL, the range of the electric field EF widens in a direction orthogonal to the virtual line PL. In this case, the volume of the enclosure 10 having a circular cross-section is increased to secure ground insulation, and the volume of the case 20 accommodating the enclosure 10 is also increased. Accordingly, the overall volume of the gas insulated switchgear is increased.

In the embodiment, the center of the second fixing body 400 is disposed on the imaginary line PL passing through the center of the supporter 300 and the center of the first fixing body 100, so that the second fixing body Compared to a structure in which the center of 400 deviates from the virtual line PL, the range in which the electric field EF is formed can be narrowed.

Accordingly, the gas insulated switchgear is miniaturized by reducing the volume of the case 20 surrounding the enclosure 10 and the enclosure 10 arranged to have a predetermined separation distance from the electric field EF to secure ground insulation. can do.

Conventionally, in order to secure insulation, the conductor 420 is provided to have a structure in which the conductor 420 is separated from the first fixing body 100 and the coupling part 500 as much as possible.

To this end, for example, one end of the conductor 420 protrudes in the lateral direction of the second fixed contact 410 and the other end protrudes in the lateral direction of the input resistance unit 700, so that the conductor 420 as a whole is provided to bypass the first fixing part body 100 and the coupling part 500. In this structure, the overall volume of the gas insulated switchgear is increased.

In the embodiment, insulation between the conductor 420, the first fixing part body 100, and the coupling part 500 is sufficiently secured by the insulator 440, so that the conventional bypass structure is not used and the linear structure A conductor 420 may be provided.

That is, referring to FIG. 1 again, the conductor 420 may be electrically connected to the lower portion of the input resistance unit 700 and disposed in a straight line toward a contact point connected to the input resistance unit 700 .

Due to this structure, the volume of the gas insulated switchgear can be reduced and the range in which the electric field EF is formed can be narrowed.

Accordingly, the gas insulated switchgear is miniaturized by reducing the volume of the case 20 surrounding the enclosure 10 and the enclosure 10 arranged to have a predetermined separation distance from the electric field EF to secure ground insulation. can do.

As described above, the present invention has been described with reference to the drawings illustrated, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that variations can be made. In addition, although the operational effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be recognized.

10: enclosure 20: case
100: first fixing body 110: first fixing contact
200: first movable body 210: first movable contact
220: guide device 300: supporter
400: second fixing body 410: second fixing contact
420: conductor 430: support pipe
440: insulator 441: through hole
442: through hole 443: hollow part
500: coupling part 600: second movable body
610: second movable contact 700: input resistance unit
810: Insulation washer 820: coupling mechanism
821: nut 830: support member
PL: imaginary line EF: electric field

Claims (8)

a first fixing body having a first fixing contact;
and a first movable part contact disposed to face the first fixed part body and disposed to face the first fixed part contact, and move with respect to the first fixed part body to connect the first fixed part contact and the first part contact. a first movable body that energizes or energizes the first movable contact;
a second fixing part body coupled to the first fixing part body, spaced apart from the first fixing part body, and having a second fixing part contact;
a coupling part coupling the first fixing part body and the second fixing part body to each other;
A second movable contact coupled to the first movable part body and disposed to face the second fixed part body and disposed to face the second fixed part contact; a second movable body that energizes or turns off a second fixed contact point and the second movable contact point; and
A closing resistance unit electrically connected to the first fixed part body and the second fixed part body, respectively, and energized when the second fixed part contact and the second movable part contact are energized,
The second fixing body,
a conductor electrically connected to the second fixed contact and the input resistance unit;
a support tube that surrounds at least a portion of the conductor and supports the conductor; and
An insulator formed to surround at least a portion of the support pipe, coupled to the coupling part, and made of an electrical insulating material,
A through hole is formed in the insulator so that an end of the coupling mechanism is exposed to the outside,
The through hole is provided to have a predetermined depth so that the exposed end of the coupling mechanism is spaced apart from the inlet of the through hole when the coupling mechanism is mounted in the through hole.
Gas insulated switchgear. According to claim 1,
The coupling mechanism,
Fastened through the coupling portion, the insulation insulator, and the insulation washer at the portion where the coupling portion and the insulator contact each other,
Gas insulated switchgear According to claim 2,
The insulating washer is disposed at a contact portion between the coupling mechanism and the insulator and is formed of an electrically insulating material.
Gas insulated switchgear. delete According to claim 1,
The insulator is made of a fiber-reinforced plastic material,
Gas insulated switchgear. According to claim 1,
A supporter coupled to the first fixing body and formed to protrude in a direction crossing the longitudinal direction of the first fixing body.
Including more,
Gas insulated switchgear. According to claim 6,
The second fixing body,
Its center is provided to be disposed on an imaginary line passing through the center of the supporter and the center of the first fixing body,
Gas insulated switchgear. According to claim 1,
the conductor,
Electrically connected to the lower portion of the input resistance unit,
Provided to be arranged in a straight line toward the contact connected to the input resistance unit,
Gas insulated switchgear.

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