KR102163626B1 - Drawn module for mcsg - Google Patents

Abstract

The present invention relates to an MCSG, and more particularly, to a Trolley Type of MCSG. An object of the present invention is to provide an MCSG that facilitates maintenance of a circuit breaker and a PT.
The present invention may have an effect of minimizing personal damage to ARC pressure generated when an accident occurs due to a short or a ground fault by the PT and PT withdrawal modules being located below the breaker room. In addition, in the present invention, a circuit breaker and PT are mounted on a container withdrawal module that can be transported, and a circuit breaker and a PT are connected or separated on the MCSG according to the entry into and withdrawal from the MCSG of the container withdrawal from the MCSG. The breaker and PT can be transported by using the built-in drop-out module, and accordingly, the maintenance work of the breaker and PT can be facilitated.

Description

Withdrawal module for MCSG {DRAWN MODULE FOR MCSG}

The present invention relates to a withdrawal module for MCSG, and more particularly, to a Trolley type of MCSG withdrawal module.

The type of switchgear is divided into air insulated switchgear (AIS), gas insulated switchgear (GIS), and solid insulated switchgear (SIS) according to the insulation method. Depending on the structure, it is divided into MCSG (Metal Clad Switchgear) type and MESG (Metal Enclosed Switchgear) type.

Korean Patent Registration No. 10-1907952 is a bus room, a cable room equipped with a grounding switch and a current transformer, an LV room provided on one side of the bus room, a circuit breaker room located below the LV room, and a front surface installed in contact with the LV room and the breaker room. A cover; and a circuit breaker rail base installed in the breaker room to guide the breaker to be attached and detached, and a switchboard having a breaker base positioned below the breaker to support the breaker and detachable. Korean Patent Registration No. 10-1907952 discloses a circuit breaker installation structure that can be pulled in and pulled out for maintenance. However, Korean Patent Registration No. 10-1907952 does not support the transport of the withdrawn circuit breaker.

In addition, PT (Power Transformer) should be installed as a supplement for accidents (for example, internal arc) due to short or ground fault, but Korean Patent No. 10-1907952 secures space for installing PTs. It is difficult to install the PT on the top of the enclosure. Accordingly, the volume of MCSG increases, and there is difficulty in maintaining/repairing the PT.

1. Korean Patent Registration No. 10-1907952 (2018.10.08.)

An object of the present invention is to provide an MCSG that minimizes human damage and facilitates maintenance work of circuit breakers and PTs in the event of an accident due to a short or ground fault.

The withdrawal module for MCSG according to a preferred embodiment of the present invention for achieving the above object is a breaker withdrawal module for drawing in or drawing a circuit breaker mounted on the top from the MCSG into the MCSG, and is provided at the bottom of the breaker withdrawal module, and the upper It is characterized in that it comprises a PT withdrawal module for drawing in or drawing in the PT mounted on the MCSG from the MCSG, and a swash plate having a predetermined angle and is rotatably provided between the breaker withdrawal module and the PT withdrawal module and the lower door.

In addition, the circuit breaker module includes a circuit breaker mounting plate on which the circuit breaker is mounted, at least one support for supporting the circuit breaker mounting plate, a support plate for supporting the support, a moving leg formed under the support plate, the support plate, and PT accommodation space formed by the movable leg, at least one or more first wheels provided on an inner lower or side surface of the movable leg, a first guide rail for guiding the movement of the first wheel, and one side of the breaker mounting plate It characterized in that it comprises a first moving handle provided in the.

In addition, the PT withdrawal module includes a PT mounting plate on which the PT is mounted on an upper portion, at least one second wheel provided on an inner lower portion or a side surface of the PT mounting plate, and a second guide for guiding the movement of the second wheel. It characterized in that it comprises a rail and a second moving handle provided on one side of the mounting plate.

The present invention may have the effect of minimizing personal damage to ARC pressure that occurs when an accident occurs due to a short or a ground fault by the PT and PT withdrawal modules being located below the breaker room.

In addition, according to the present invention, a breaker and PT are mounted on a container withdrawal module that can be transported, and a breaker and a PT are connected or separated on the MCSG and withdrawn from the MCSG according to the inflow and withdrawal from the MCSG of the dish withdrawal module. The breaker and PT can be transported without a hoisting machine such as a hoist by using the built-in withdrawal module, and accordingly, maintenance work of the breaker and PT can be facilitated.

1 is a perspective view of an MCSG according to the present invention
Figure 2 is a perspective view of the MCSG according to the present invention with both side enclosures removed
3 is a cross-sectional view of an MCSG according to the present invention
4 is a perspective view of a breaker withdrawal module and a PT withdrawal module according to the present invention
5 is a front view of a breaker withdrawal module and a PT withdrawal module according to the present invention
6 is a perspective view of a breaker withdrawal module and a PT withdrawal module according to the present invention withdrawn from the MCSG
7 is a front view of a breaker withdrawal module and a PT withdrawal module according to the present invention withdrawn from the MCSG

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

In describing each drawing, similar reference numerals have been used for similar elements. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, an MCSG according to an embodiment of the present invention will be described in detail with reference to the drawings. Hereinafter, descriptions of conventionally known matters are omitted or simplified to clarify the subject matter of the present invention.

1 is a perspective view of an MCSG according to the present invention. Figure 2 is a perspective view of the MCSG according to the present invention with both side enclosures removed. 3 is a cross-sectional view of an MCSG according to the present invention. 4 is a perspective view of a breaker withdrawal module and a PT withdrawal module according to the present invention. 5 is a front view of a breaker withdrawal module and a PT withdrawal module according to the present invention. 6 is a perspective view of a breaker withdrawal module and a PT withdrawal module according to the present invention withdrawn from the MCSG. 7 is a front view of a breaker withdrawal module and a PT withdrawal module according to the present invention withdrawn from the MCSG.

1 to 7, in the MCSG (Metal Clad Switchgear) 1 according to the present invention, a breaker 210 and a PT 220 are mounted on a withdrawable module capable of carrying, and the withdrawal module is inserted into the MCSG 1 And the breaker 210 and PT 220 are connected or disconnected on the MCSG 1 according to the withdrawal from the MCSG 1, and the breaker 210 and the PT 220 using the withdrawal module drawn from the MCSG 1 ) Can be transported, and accordingly, the circuit breaker 210 and PT 220 can be easily maintained. The MCSG 1 may include an enclosure 10.

The enclosure 10 may be formed of metal, and an inner space may be formed in a hollow shape. The space formed inside the enclosure 10 may be kept airtight, and may be divided into a booth room 100, a circuit breaker room 200, a cable room 300, and an LV room 400. The booth chamber 100 may be formed in the inner upper region of the enclosure 10, and the cable chamber 300 may be formed in the left and lower regions of the booth chamber 100. In addition, the breaker room 200 may be formed in the right area of the bus room 100 and the cable room 300, and the LV room 400 may be formed in the upper right area of the breaker room 200. The booth room 100, the circuit breaker room 200, the cable room 300, and the LV room 400 may be partitioned by metal partition walls, and mutual airtightness may be maintained.

Specifically, the booth room 100 may be kept mutually airtight with the cable room 300 by the first partition wall 20, and the breaker room 200 and the other airtightness may be maintained by the second partition wall 30. I can. The cable room 300 can be kept mutually airtight with the breaker room 200 by the second partition wall 30, and the LV room 400 is kept mutually airtight with the breaker room 200 through a sealed outer case. Can be.

The first partition wall 20 and the second partition wall 30 may be formed of a plurality of metal plates.

In addition, the enclosure 10 may be provided with a relief device thereon, and may be formed for each compartment.

The first relief device 11 may be provided on the top of the cable chamber 300, and when an accident (eg, flame, explosion, etc.) occurs in the cable chamber 300, the first relief device 11 It can be discharged to the outside of the enclosure (10).

The second relief device 12 may be provided on the upper part of the booth room 100, and if an accident (eg, flame, explosion, etc.) occurs in the booth room 100, the second relief device 12 It can be discharged to the outside of the enclosure (10).

The third relief device 13 may be provided on the top of the breaker room 200, and when an accident (eg, flame, explosion, etc.) occurs in the breaker room 200, the third relief device 13 It can be discharged to the outside of the enclosure (10).

That is, the first to third relief devices 13 can prevent accidents of a room in charge of each relief device from being transferred to another room, and to this end, can discharge the accident to the outside of the enclosure 10. In order to discharge accidents occurring in each room to the outside of the enclosure 10, the first to third relief devices 13 may be designed to have a structure that is more susceptible to accidents than the first and second partition walls 30.

Hereinafter, the booth room 100, the circuit breaker room 200, the cable room 300, and the LV room 400 that can be partitioned inside the enclosure 10 will be described. Hereinafter, descriptions of conventionally known matters are omitted or simplified to clarify the subject matter of the present invention.

The booth chamber 100 may be formed in the upper inner region of the enclosure 10, and may be formed by the first partition wall 20 and the second partition wall 30. The booth room 100 may be kept mutually airtight with the cable room 300 by the first partition wall 20, and the breaker room 200 and the other airtightness can be maintained by the second partition wall 30. In addition, the bus chamber 100 may be provided with a second relief device 12 on the top, and may include a bus bar 110, a support insulator 120 and a first bushing 130 provided therein. have.

The busbar 110 may be coupled to one side of the support insulator 120 to be fixed on the second partition wall 30, and may be electrically connected to the first bushing 130.

The support insulator 120 may be coupled to a bus bar 110 on one side, and the other side may be fixed on the second partition wall 30. Accordingly, the support insulator 120 may fix the bus bar 110 on the second partition wall 30.

One side of the first bushing 130 may be fixed to the second partition wall 30, and may be electrically connected to the busbar 110. The first bushing 130 may have an upper circuit breaker creep receiving hole 131 for accommodating the upper circuit breaker creep 212 on one side, and through the first through hole 31 formed in the second partition wall 30 The upper circuit breaker creep receiving port 131 may be exposed toward the circuit breaker chamber 200. The upper circuit breaker creep 212 may be electrically connected to the bus bar 110 by being inserted into the upper circuit breaker creep receiving port 131.

The circuit breaker room 200 may be formed in the right area of the booth room 100 and the cable room 300 from the inside of the enclosure 10, and the bus room 100 and the cable room ( 300) and mutual confidentiality can be maintained. The circuit breaker room 200 may cut off or inject current by inserting and electrically connecting creeps provided therein to each receiving hole, and measure the voltage transmitted to the load side. The breaker room 200 may include a breaker 210, a PT 220, a breaker withdrawal module 230, and a PT withdrawal module 240, and a lower door 50 may be formed on one side. Accordingly, by opening the lower door 50, the breaker 210 and the PT 220 can be inserted or withdrawn.

The breaker 210 may be provided on the top of the breaker withdrawal module 230 from the top of the PT 220, and may be withdrawn from the MCSG 1 or drawn into the MCSG 1 by the breaker withdrawal module 230. . The breaker 210 may block or close the current flowing through the bus in a preset manner, and may include a breaker body 211, an upper breaker creep 212, and a lower breaker creep 213. .

The circuit breaker body 211 may be provided on the upper part of the breaker withdrawal module 230, and insert the upper circuit breaker creep 212 and the lower circuit breaker creep 213 into each receiving port using the circuit breaker withdrawal module 230. As a result, current flowing through the busbar can be cut off or injected in a predetermined manner.

The upper circuit breaker creep 212 may be provided on one side of the circuit breaker body 211 and may be formed to protrude from one side of the circuit breaker body 211. The upper circuit breaker creep 212 may be electrically connected to the bus bar 110 through the first bushing 130 by inserting and fixing the tip of the tip into the upper circuit breaker creep receiving hole 131 of the first bushing 130. .

The lower circuit breaker creep 213 may be provided under the upper circuit breaker creep 212 at one side of the circuit breaker body 211 and may be formed to protrude from one side of the circuit breaker body 211. The lower breaker creep 213 can be electrically connected to the load busbar connection part 360 through the second bushing 310 by inserting and fixing the tip into the lower breaker creep receiving hole 311 of the second bushing 310. have.

The PT 220 may be provided in the lower inner side of the circuit breaker room 200 and may be located under the circuit breaker 220. The PT 220 may be provided above the PT withdrawal module 240, and may be withdrawn from the MCSG 1 or drawn into the MCSG 1 by the PT withdrawal module 240. The PT 220 may be electrically connected to the fourth connection busbar 344, and may measure a voltage transmitted to the load side with a voltage transmitted through the fourth connection busbar 344. PT 220 may include a PT body 221 and a PT creep 222.

The PT body 221 may be provided on the upper part of the PT withdrawal module 240 from the lower part of the circuit breaker 210, and the PT creep 222 is attached to the PT creep receiving port 371 using the PT withdrawal module 240. By inserting and fixing, the voltage transmitted to the load side can be measured as a voltage that is electrically connected to the fourth connection busbar 344 and transmitted through the fourth connection busbar 344.

The PT creep 222 may be provided on one side of the PT body 221 and may be formed to protrude from one side of the PT body 221. The PT creep 222 may be electrically connected to the fourth connection busbar 344 by inserting and fixing the tip end into the PT creep receiving hole 371 of the PT connector 370.

The breaker withdrawal module 230 draws the breaker 210 provided on the upper part of the breaker withdrawal module 230 according to the opening and closing of the lower door 50 from the breaker room 200 of the MCSG 1 or the MCSG 1 It may be provided to be retractable into the circuit breaker room 200, and may be formed to have wheels such as a truck, a truck, and a wagon to facilitate replacement and maintenance of the circuit breaker 210. The breaker withdrawal module 230 may draw out or insert the breaker 210 by using a swash plate 60 rotatably provided between the breaker withdrawal module 230 and the lower door 50, and the PT 220 A PT accommodation space 235 that can accommodate) may be provided. The swash plate 60 may be formed at a preset angle, and one side may be in contact with the ground and at the same time the other side may be formed at a preset height, and may be rotatably coupled to the enclosure 10 of the MCSG 1.

The circuit breaker withdrawal module 230 includes a circuit breaker mounting plate 231 on which the circuit breaker 210 is mounted, at least one support 232 supporting the circuit breaker mounting plate 231, and a support plate supporting the support 232 ( 233), a moving leg 234 formed at both ends of the support plate 233, a PT accommodation space 235 formed by the support plate 233 and the moving leg 234, the inner lower part or the side of the moving leg 234 One side of the circuit breaker mounting plate 231 to move the at least one or more first wheels 236, the first guide rail 237 for guiding the movement of the first wheel 236, and the breaker withdrawal module 230 It may include a first moving handle 238 provided in the.

The PT withdrawal module 240 draws the PT 220 provided on the upper part of the PT withdrawal module 240 according to the opening and closing of the lower door 50 from the breaker room 200 of the MCSG 1 or the MCSG 1 It may be provided to be retractable into the breaker room 200, and may be formed to have wheels such as a truck, a truck, and a wagon to facilitate replacement and maintenance work of the PT 220. The PT withdrawal module 240 may withdraw or insert the PT 220 using a swash plate 60 rotatably provided between the PT withdrawal module 240 and the lower door 50. The swash plate 60 may be formed at a preset angle, and one side may be in contact with the ground and at the same time the other side may be formed at a preset height, and may be rotatably coupled to the enclosure 10 of the MCSG 1.

The PT withdrawal module 240 includes a PT mounting plate 241 on which the PT 220 is mounted, at least one second wheel 242 provided on an inner lower or side surface of the PT 220 mounting plate, and a second It may include a second guide rail 243 for guiding the movement of the wheel 242 and a second moving handle 244 provided on one side of the PT mounting plate to move the PT withdrawal module 240.

The cable chamber 300 may be formed in the left and lower regions of the booth chamber 100 from the inside of the enclosure 10, and may be formed by the first partition wall 20 and the second partition wall 30. The cable chamber 300 may be mutually airtight with the bus chamber 100 by the first partition wall 20, and the airtightness with the breaker room 200 may be maintained by the second partition wall 30. In addition, the cable seal 300 may be provided with a first relief device 11 on the upper side, and a second bushing 310, a first CT 320, a second CT 330, an earthing switch provided therein 350, a connection busbar 340, a load busbar connection part 360, and may include a PT connector 370.

One side of the second bushing 310 may be fixed to the second partition wall 30, and a first CT 320 may be provided on the other side. The second bushing 310 may be electrically connected to the first connection busbar 341 accommodated inside the first CT 320, and the current on the first connection busbar 341 is transferred to the first CT 320 ) Can be measured. In addition, the second bushing 310 may have a lower circuit breaker creep receiving hole 311 for accommodating the lower circuit breaker creep 213 on one side, and a second through hole 32 formed in the second partition wall 30 Through this, the lower circuit breaker creep receiving port 311 may be exposed toward the circuit breaker chamber 200. The lower circuit breaker creep 213 may be electrically connected to the load busbar connecting portion 360 by being inserted into the lower circuit breaker creep receiving hole 311.

The first CT 320 may be of a Rogowski coil type, and may be provided on the other side of the second bushing 310. The first CT 320 may accommodate a first connection busbar 341 inside, and a current on the first connection busbar 341 may be measured.

The second CT 330 may be of a bar type, and may be connected to the first CT 320 by a first connecting bus bar 341 and connected to the grounding switch 350 by a second connecting bus bar 342. have. The second CT 330 may be provided on one side of the first CT 320, a first coil (not shown) connected in series by a first connection busbar 341 and inductively coupled to the first coil. It may include a second coil (not shown).

One side of the first coil may be connected to the first connection busbar 341, and the other side may be electrically connected to the second connection busbar 342. In addition, the first coil may be inductively coupled to the second coil.

The second coil may be inductively coupled to the first coil inside the second CT 330, and the second CT 330 may detect a current on the first coil through the second coil.

The connection busbar 340 may connect the first CT 320, the second CT 330, the earthing switch 350, and the PT connector 370 to each other, and may electrically connect them. The connection busbar 340 may include a first connection busbar 341, a second connection busbar 342, a third connection busbar 343, and a fourth connection busbar 344.

One side of the first connection busbar 341 may be electrically connected to the second bushing 310, and a first CT 320 may be provided on the outside. That is, it may be accommodated in the first CT 320. The other side of the first connection busbar 341 may be connected in series to one side of the first coil.

One side of the second connection busbar 342 may be electrically connected to the other side of the first coil, and the other side may extend downward from the second CT 330. The second connection busbar 342 may have an earthing switch 350 installed on one surface of the other side, and a third connection busbar 343 may be electrically connected to the other surface of the other side.

” 타입일 수 있으며, 일측이 제 2 연결 부스바(342)와 전기적으로 접속되는 것과 동시에 타측이 제 4 연결 부스바(344)의 일측과 밀착 고정될 수 있다.The third connecting busbar 343 is “

”Type, and one side may be electrically connected to the second connection busbar 342 and the other side may be closely fixed to one side of the fourth connection busbar 344.

” 타입일 수 있으며, 일측이 제 3 연결 부스바(343)와 밀착 고정되는 것과 동시에 타측이 하방으로 연장되어 PT 커넥터(370)와 결합될 수 있다.The fourth connection busbar 344 is “

”Type, and one side may be closely fixed to the third connection busbar 343 and at the same time the other side may be extended downward to be coupled to the PT connector 370.

Here, a region in which the third connection busbar 343 and the fourth connection busbar 344 are closely fixed may form a load busbar connection part 360. Accordingly, a load busbar (not shown) extending toward the load may be electrically connected to the load busbar connection unit 360.

The grounding switch 350 may be installed on the other side of the second connection busbar 342 and may be connected to the handle 351 through a connecting means such as a shaft or a steel bar. The grounding switch 350 may be operated by the rotation of the handle 351 and may be connected or blocked with the second connection busbar 342 by the user's manipulation of the handle 351. Accordingly, when the earthing switch 350 is connected to the second connection busbar 342, the residual current of the fault current may be discharged through the grounding of the earthing switch 350.

The load busbar connection part 360 may be formed in a region in which the third connection busbar 343 and the fourth connection busbar 344 are closely fixed, and the load busbar extending to the load side may be electrically connected.

One side of the PT connector 370 may be coupled to the other side of the fourth connection busbar 344 and the other side may be fixed to the second partition wall 30. In addition, the PT connector 370 may have a PT creep receiving hole 371 for accommodating the PT creep 222 at one side, and the PT through a third through hole 33 formed in the second partition wall 30 The creep receiving port 371 may be exposed toward the circuit breaker room 200. The PT creep 222 can be electrically connected to the fourth connection busbar 344 by being inserted into the PT creep receiving port 371, and accordingly, the PT 220 connects the fourth connection busbar 344 The voltage delivered to the load side can be measured with the voltage delivered through it.

The LV chamber 400 may be formed in the upper right area of the circuit breaker chamber 200 from the inside of the enclosure 10, and mutual airtightness with the circuit breaker chamber 200 may be maintained through a sealed outer case. The LV chamber 400 is for controlling the operation of the relay, the first CT 320 and the second CT 330, the PT 220, the circuit breaker 210, etc. that perform a protective operation or supplying an operating voltage. Components such as control circuits and manipulators may be provided. In summary, the MCSG (1) components operating on a low voltage may be densely installed inside the LV chamber 400. In addition, the LV chamber 400 may have an upper door 40 formed on one side thereof, and components may be operated by opening and closing the door.

The present invention is not limited to the specific preferred embodiments described above, and anyone of ordinary skill in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims can implement various modifications Of course, such changes are within the scope of the claims.

1: MCSG
10: enclosure
11: first relief device 12: second relief device
13: third relief device
20: first bulkhead
30: second bulkhead
31: first through hole 32: second through hole
33: third through hole
40: upper door
50: lower door
60: swash plate
100: booth room
110: bus bar
120: support insulator
130: first bushing
131: upper breaker creep receiving port
200: circuit breaker room
210: circuit breaker
211: circuit breaker body 212: upper circuit breaker creep
213: lower breaker creep
220: PT
221: PT body 222: PT creep
230: breaker withdrawal module
231: circuit breaker mounting plate 232: support
233: support plate 234: moving leg
235: PT accommodation space 236: 1st wheel
237: first guide rail 238: first moving handle
240: PT withdrawal module
241: PT mounting plate 242: second wheel
243: second guide rail 244: second moving handle
300: cable room
310: second bushing
311: lower breaker creep receiving port
320: 1st CT
330: 2nd CT
340: connection busbar
341: first connection busbar 342: second connection busbar
343: 3rd connection busbar 344: 4th connection busbar
350: Earthing switch
351: handle
360: load busbar connection
370: PT connector
371: PT creep receiving port
400: LV room

Claims (3)

A breaker withdrawal module provided inside a breaker room partitioned inside the enclosure and for drawing a breaker mounted on the top from the MCSG or into the MCSG;
A PT withdrawal module provided below the breaker withdrawal module and for drawing a PT mounted thereon from the MCSG or into the MCSG; And
Includes; a swash plate rotatably provided between the breaker withdrawal module and the PT withdrawal module and the lower door and having a predetermined angle,
The circuit breaker room
It is formed in the right area of the bus chamber formed in the inner upper area of the enclosure and the cable chamber formed in the left and lower areas of the booth chamber,
A PT provided in the lower inner side and having a PT creep protruding to one side,
It is provided on the upper part of the PT, and includes a circuit breaker including an upper circuit breaker creep protruding from one side of the upper and a lower circuit breaker creep protruding from the lower one side,
The PT creep is electrically connected to the fourth connection busbar by inserting and fixing the tip of the PT creep into the PT creep receiving hole of the PT connector provided in the cable chamber,
The upper circuit breaker creep is inserted and fixed to the upper circuit breaker creep receiving hole of the first bushing of the bus chamber, and is electrically connected to the busbar of the bus through the first bushing,
The lower breaker creep is inserted and fixed to the lower breaker creep receiving hole of the second bushing of the cable chamber, and is electrically connected to the load busbar connection portion through the second bushing,
The breaker withdrawal module is
A circuit breaker mounting plate on which the circuit breaker is mounted,
At least one or more supports for supporting the circuit breaker mounting plate,
A support plate for supporting the support,
Movable legs formed at both ends of the support plate,
PT accommodation space formed by the support plate and the moving leg,
At least one or more first wheels provided on an inner lower portion or side surface of the moving leg,
A first guide rail for guiding the movement line of the first wheel and
It includes a first moving handle provided on one side of the circuit breaker mounting plate,
The PT withdrawal module
PT mounting plate on which the PT is mounted on the upper part,
At least one or more second wheels provided on an inner lower or side surface of the PT mounting plate,
A second guide rail for guiding the movement of the second wheel, and
It includes a second moving handle provided on one side of the PT mounting plate,
The swash plate is a pull-out module for MCSG, characterized in that one side is in contact with the ground and at the same time the other side is formed to a predetermined height and is rotatably coupled to the enclosure. delete delete

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