JP2017034867A - Switch gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a switch gear capable of easily coping with a variety of maintenance forms while adopting function-by-function modules.SOLUTION: A switch gear includes, as a basic function module, a breaker module 101 constituted by a breaker room 3 to accommodate equipment units each having a loaded breaker 6 in two upper and lower stages, and a control room 2, disposed in front of the breaker room 3 and having a door 4 on the front face, to house an equipment unit control circuit. The switch gear further includes a bus module 301 which accommodates a main bus 32 and a cable module 201 which accommodates an external line cable 22. The cable module 201 is disposed at the side face of the breaker module 101, and the bus module 301 is disposed in the upper part, to configure a switch gear of a front operation and front maintenance type. By the change of the combination of the cable module with the bus module, a switch gear of a front operation and back maintenance type is obtained.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a structure of a metal closed type switchgear.

2. Description of the Related Art Conventionally, a metal closed disk type switchgear that constitutes one surface by a combination of modules divided by function is known. An example of such a conventional switchgear is shown in FIG. (A) is a perspective view, (b) is the block skeleton.
A control device (not shown) such as a drawer type circuit breaker 51, a current transformer and a control relay device is mounted to form a device module 52 in a unit of a circuit, and a plurality of the device modules 52 are joined and stacked to form a device block. 53 is configured. The circuit breaker 51 is not shown in the perspective view of FIG.
A cable module 55 having the same height and depth as the device block 53 and having the cable 54 accommodated therein is joined to the side of the device block 53, and further, the same as the device block 53 and the cable module 55 above them. A one-side switchgear is configured by joining a bus module 57 having a width and a depth and accommodating a main bus 56 inside. A branch bus 58 connecting the main bus 56 and the circuit breaker 51 is disposed on the back side in the device module 52 (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-115926 (page 3, FIG. 1 to FIG. 3)

In a conventional switchgear such as Patent Document 1, a switchgear is configured by a combination of modules divided according to function, thereby shortening design time and enabling mass production, thereby reducing costs. However, one circuit breaker is a module for each circuit unit, and the number of modules constituting one surface is large. Each module requires a minimum of four pillar frames and a ceiling / floor frame to form a casing. For this reason, there are problems in that the connection work between the modules is large, the assembling time is increased, and the cost is increased because the pillar frame and the ceiling / floor frame are doubled and the number of parts used is increased.
Furthermore, since the branch bus that connects the main bus of the bus module placed in the upper part and the circuit breaker is located immediately behind the circuit breaker, the external line connection conductor of the cable lead-out section is a device that houses the circuit breaker. It must be placed on the side of the block, and can only handle front operation and front maintenance structures. In order to cope with the front operation / rear maintenance structure, it is necessary to prepare a device block having a different structure, which increases the number of components and causes a high cost.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a switchgear that can cope with various maintenance forms and reduce costs while adopting modules according to functions. And

  The switchgear according to the present invention includes a circuit breaker chamber in which device units are arranged in two upper and lower stages, and at least one device unit is mounted with a two-stage stacked device unit in which a circuit breaker is mounted; A circuit breaker module that is configured in the front of the room and has a door in the front and that accommodates the control circuit of the equipment unit is used as a basic function module, and further, a bus module that accommodates the main bus and an external cable Depending on the combination of the layout of the cable module and busbar module, the front operation / front maintenance type or the front operation / rear maintenance type can be used for the circuit breaker module with the door facing the front. Both can be configured.

  In addition, the device units on which the circuit breakers are mounted are arranged in two upper and lower stages, the circuit breaker room has a main bus between the upper and lower device units, and a door in front of the circuit breaker room. A circuit breaker module composed of a control room in which the control circuit of the equipment unit is accommodated is used as a basic function module, and further equipped with a cable module that accommodates an external cable, with the door facing the circuit breaker module. By configuring the cable module on the side of the circuit breaker module, it is configured as a front operation / front maintenance type, and by arranging the cable module on the rear surface of the circuit breaker module, it is configured as a front operation / rear maintenance type. It is what I did.

According to the switchgear of the present invention, the circuit breaker module that accommodates the two-stage equipment unit is used as a basic function module. Since it can be configured for either the maintenance type or the front operation / rear maintenance type, the basic components can be shared between the front operation / front maintenance type and the front operation / rear maintenance type switchgear. The production line of the instrument module is shared, and the production efficiency is improved. In addition, sharing of parts is promoted, the number of parts is reduced, and management costs can be reduced.
In addition, since the module configuration is divided into functional units, compared with the case where the module is divided into circuit breakers and auxiliary machines, there is less overlap between the pillar frame of the casing and the ceiling / floor cover. Since it can be configured with a structure, it is inexpensive.

  In addition, the circuit breaker module in which the main bus bar is placed between the upper and lower equipment units is used as the basic function module, and by changing the cable module layout for this circuit breaker module, front operation / front maintenance type, or Since it is configured as a front operation / rear maintenance type, in addition to the same effects as described above, the production efficiency can be further increased by increasing the number of common parts.

It is side surface sectional drawing which shows the circuit breaker module of the switchgear by Embodiment 1 of this invention. It is the front view and side sectional drawing of a circuit breaker module, a cable module, and a bus-line module in the case of front operation and front maintenance type by Embodiment 1. FIG. 3 is a front view and a side cross-sectional view of a front operation / front maintenance type switchgear according to Embodiment 1 in which the modules of FIG. 2 are combined. It is side surface sectional drawing of a circuit breaker module, a cable module, and a bus-line module in the case of the front operation type / rear surface maintenance type according to the first embodiment. FIG. 5 is a side cross-sectional view of a front operation / rear maintenance type switchgear according to the first embodiment, in which the modules of FIG. 4 are combined. It is the front view and side surface sectional drawing of a switchgear of a front operation / front maintenance type by Embodiment 2 of this invention. 6 is a side sectional view of a front operation / rear maintenance type switchgear according to Embodiment 2. FIG. It is side surface sectional drawing which shows the circuit breaker module of the switchgear by Embodiment 3 of this invention. FIG. 9 is a front view and a side sectional view of a front operation / front maintenance type switchgear using the circuit breaker module of FIG. 8. FIG. 9 is a side cross-sectional view of a front operation / rear maintenance type switchgear using the circuit breaker module of FIG. 8. It is the perspective view and skeleton figure of the conventional switchgear.

Embodiment 1 FIG.
FIG. 1 is a side cross-sectional view of a circuit breaker module 101 constituting the switchgear in the first embodiment. This circuit breaker module 101 is a basic function module that can be used for both the front operation / front maintenance and the front operation / rear maintenance structure described later.
As shown in the figure, the circuit breaker module 101 is divided into a control chamber 2 and a circuit breaker chamber 3 inside the housing 1, and has a door 4 outside the control chamber 2. Hereinafter, the door 4 side will be described as the front surface, and the opposite side as the rear surface. Moreover, in FIG. 1, only the framework is shown, and the equipment and components housed inside are not displayed.

The inside of the circuit breaker chamber 3 is divided into an upper circuit breaker chamber 3a and a lower circuit breaker chamber 3b, each of which accommodates a device unit. In the case of FIG. 1, a circuit breaker unit for one line configured by mounting a circuit breaker 6 to be described later in each room corresponds to this. In other words, the circuit breaker unit is a two-stage product feeder as a whole. Rails (not shown) for taking in and out of the drawer-type circuit breaker 6 are laid on the floor surface of each chamber, and the upper wall led out from the back surface of the circuit breaker 6 is provided on the wall surface vertically provided on the back side. A bushing 5 that can contact with and separate from the terminal and the lower terminal is disposed. When the circuit breaker 6 has three phases, the bushings 5 are also arranged side by side in the direction perpendicular to the paper surface of the drawing so as to correspond to each phase.
The control chamber 2 in front of the circuit breaker chamber 3 accommodates control devices and control circuits (both not shown) required for the device unit of the two-stage feeder.

  FIG. 2 is a front view of the circuit breaker module 101, the cable module 201, and the busbar module 301 when a front operation / maintenance type switchgear is configured using the circuit breaker module 101 of FIG. 1. It is side surface sectional drawing (b). FIG. 3 shows a front operation / front maintenance type switchgear completed by combining the modules from the state of FIG. 2, wherein (a) is a front view and (b) is a side sectional view. In the front view of (a), the front door 4 or cover or the like is omitted so that the inside can be seen, and devices such as a circuit breaker accommodated in the inside are not displayed.

As shown in FIG. 2, the circuit breaker module 101 accommodates a drawer type circuit breaker 6 in each of the upper circuit breaker chamber 3a and the lower circuit breaker chamber 3b and pushes it into the back side, And the lower terminal are fitted into the central conductor of the bushing 5. On the back side of the bushing 5, the upper terminal side of the upper circuit breaker 6 is connected to the bus connecting conductor 7 arranged upward, and the upper terminal side of the upper circuit breaker 6 and the upper terminal of the lower circuit breaker 6 are connected. The terminal side is connected by a connection conductor 8.
The lower terminal side of the upper and lower circuit breakers 6 is connected to the connection conductor 9 of each phase arranged downward on the back side of the bushing 5 and further horizontally to the left or right (left in the figure) from each phase. It connects with the outside line connection conductor 10 extended in this. At this time, the dimension of each part is determined so that the outside line connection conductor 10 and the connection conductor 8 may satisfy the insulation distance.
The bushing 5 on the lower side of the upper and lower circuit breakers 6 is provided with a current transformer 11 and a zero-phase current transformer 12.

For the circuit breaker module 101, a cable module 201 is prepared which is composed of a casing 21 having a cable terminal processing space at the same height and depth as the circuit breaker module 101.
Also, a bus module 301 having the same depth as that of the circuit breaker module 101 and a total width of the circuit breaker module 101 and the cable module 201 is prepared.
In the bus module 301, a three-phase main bus 32 extending horizontally in the horizontal direction is arranged inside the housing 31, and each phase of the main bus 32 is connected to the three-phase bus connecting conductor 7 of the circuit breaker module 101. Three possible branch buses 33 are provided.

The cable module 201 can be arranged on either the left or right side of the circuit breaker module 101 by changing the drawing direction of the external connection conductor 10 of the circuit breaker module 101.
Further, the bus bar module 301 can be arranged at the lower part by making the connecting conductor portions vertically symmetrical in addition to being arranged above the circuit breaker module 101 and the cable module 201.
Note that a door or cover (not shown) that can be opened and closed from the front side is provided on the front side of the cable module 201 and the bus bar module 301.
Moreover, although each conductor and each bus | bath demonstrated above are suitably supported by the housing | casing side by the support insulator and the insulator, those illustration is abbreviate | omitted.

By combining the modules of FIG. 2, a front operation / maintenance type switchgear as shown in FIG. 3 is obtained. That is, after the housing 21 of the cable module 201 is joined to the side surface of the housing 1 of the circuit breaker module 101 and the housing 31 of the bus module 301 is joined to the upper portion, the branch bus 33 and the bus connecting conductor 7 are connected. The external line cable 22 is drawn into the cable module 201 and connected to the external line connection conductor 10 of each phase. This state is shown in FIG.
With such a configuration, the circuit breaker 6 can be operated on the front side with an operation part provided on the front door 4, and the door 4 can be opened to put in and out the circuit breaker 6 and to perform maintenance and inspection. Further, the external cable 22 and the main bus 32 can be also inspected from the front side by opening and closing a front door or cover (not shown).

Up to now, the front operation / front maintenance type switchgear has been described. Next, the front operation / rear maintenance is performed using the circuit breaker module 101a having the same configuration as the circuit breaker module 101 described in FIG. A case where a type of switchgear is configured will be described.
The present invention uses a circuit breaker module containing two-stage equipment units as a basic function module. By simply replacing some connection parts, the front operation / front maintenance type and front operation / rear maintenance type can be changed to different models. It is characterized by being able to respond.
FIG. 4 is a side cross-sectional view showing a part of the assembling of the front operation / rear maintenance type switch gear. FIG. 5 is a side sectional view of the switchgear completed by combining the modules from the state of FIG. Parts equivalent to those in FIGS. 2 and 3 are denoted by the same reference numerals and description thereof is omitted.

4, the circuit breaker module 101a is basically the same as the circuit breaker module 101 of FIG. 2, but the bus module 302 and the cable module 202 are arranged and combined on the rear side, so that the rear side of the bushing 5 is The conductor arrangement is different from FIG.
That is, on the rear side of the bushing 5, the lower terminal side of the circuit breaker 6 in the upper circuit breaker chamber 3a of the circuit breaker module 101a and the upper terminal side of the circuit breaker 6 in the lower circuit breaker chamber 3b are viewed from the side. The connection conductor 13 bent in a letter shape is connected. And the other terminal side of each circuit breaker 6 is connected with the outside line connection conductor 14 extended in the horizontal direction as it is. A current transformer 11 and a zero-phase current transformer 12 are provided on the bushing 5 on the side to which the external line connecting conductor 14 is connected.

The cable module 202 disposed on the rear surface side of the circuit breaker module 101a is composed of a casing 23 having the same height and width as the circuit breaker module 101a and a size having a cable terminal processing space. A bus module 302 is arranged in the section as indicated by a one-dot chain line in the drawing.
In the bus module 302, the three-phase main buses 32 are arranged in the horizontal direction as viewed from the front side with an interval in the vertical direction, and are supported on the housing side by a support lever (not shown). Each phase of the main bus 32 has a branch bus 34 connected to each phase of the connection conductor 13 on the circuit breaker module 101a side.

It should be noted that the bus module 302 may be partitioned by partitioning a portion surrounded by a one-dot chain line with a partition plate or the like, but the partition plate is omitted in the figure.
In addition, an open / close door or a removable cover is provided on the back side of the cable module 202, but these are not shown.

Each module is combined from the state of FIG. 4 to the state of FIG. After the modules are joined together, the branch bus 34 of each phase of the bus module 302 is connected to each phase of the connection conductor 13 of the circuit breaker module 101a. And the external line drawn from the outside into the external line connection conductor 14 of each phase connected to the upper terminal side of the upper circuit breaker 6 and the external line connection conductor 14 of each phase connected to the lower terminal side of the lower circuit breaker 6 Connect the cable 22. Thereby, a front operation / rear maintenance type switchgear is obtained.
That is, the circuit breaker 6 can be operated and maintained from the front side as in the case of FIG. 3, and the main bus 32 and the outside cable 22 part open and close the door or cover provided on the rear side. Maintenance inspection is possible.

As described above, according to the switchgear of the first embodiment, the device units are arranged in two upper and lower stages, and at least one device unit accommodates a two-stage device unit in which a circuit breaker is mounted. The circuit breaker module is composed of a circuit breaker room and a control room that is located in front of the circuit breaker room and has a door on the front and that houses the control circuit of the equipment unit. Front-side operation / front-maintenance type, with a combination of cable module and busbar module arrangement, for a circuit breaker module that has a busbar module to accommodate and a cable module that accommodates an external cable, with the door facing forward Alternatively, it can be configured for either front operation or rear maintenance type, so the front operation / front maintenance type and front operation / rear maintenance type switches can be used. Can be made common basic components in Chigiya, production line of the circuit breaker module is shared, thereby improving production efficiency. In addition, sharing of parts is promoted, the number of parts is reduced, and management costs can be reduced.
In addition, since the module configuration is divided into functional units, compared with the case where the module is divided into circuit breakers and auxiliary machines, there is less overlap between the pillar frame of the casing and the ceiling / floor cover. Since it can be configured with a structure, it is inexpensive.

  In addition, the equipment unit in which the circuit breaker of the circuit breaker module is mounted has a bushing that can be connected to and disconnected from the terminal of the circuit breaker, and the bushing is provided with a current transformer and a zero-phase current transformer. Since there is a connecting conductor connected to the external cable or main bus, you can change either the front operation / front maintenance type or the front operation / rear maintenance type switchgear by simply changing the connection conductor at the rear of the bushing. Can be easily accommodated.

  In addition, a cable module is arranged on the side of the circuit breaker module, and a bus bar module is arranged on the upper or lower surface of the circuit breaker module and the cable module. By using the circuit breaker module, it is possible to easily obtain a front operation / front maintenance type switchgear.

  In addition, the cable module is arranged on the rear surface of the circuit breaker module, and the bus bar module is arranged in the center in the height direction inside the cable module. By using the circuit breaker module, it is possible to easily obtain a front operation / rear maintenance type switchgear.

Embodiment 2. FIG.
6A and 6B are diagrams showing a front operation / front maintenance type switchgear according to the second embodiment, where FIG. 6A is a front view and FIG. 6B is a side sectional view. Since this corresponds to FIG. 3 of the first embodiment, FIG.
The same parts as those in FIG.
The basic function module of the switchgear according to the present embodiment is a circuit breaker module 102. Unlike the case of the first embodiment, the circuit breaker module 102 includes an upper circuit breaker chamber 3a in which an upper-stage drawer-type circuit breaker 6 is accommodated, and a lower circuit such as a transformer or a lightning arrester. It is an auxiliary machine room 3c that houses an auxiliary machine carriage 15 on which the machine is mounted. That is, it is a functional module having the function of a lead-in panel, in which the upper device unit is configured by a circuit breaker unit and the lower device unit is configured by an auxiliary machine unit.

A bus module 301 similar to that of the first embodiment is disposed on the upper part of the circuit breaker module 102, and a cable module 201 is disposed on a side surface of the circuit breaker module 102. The front operation / front maintenance type switch A gear is configured.
The upper terminal side of the circuit breaker 6 is connected to the main bus 32 via a bushing 5, a bus connecting conductor 7, and a branch bus 33. The lower terminal side of the circuit breaker 6 is connected to the external line cable 22 via the bushing 5, the connection conductor 9, and the external line connection conductor 10. The bushing 5 on the lower terminal side is provided with a current transformer 11 and a zero-phase current transformer 12.

In the lower auxiliary machine room 3c side, the terminal of the auxiliary machine mounted on the auxiliary machine truck 15 is connected to the auxiliary machine car room terminal 16, and the auxiliary machine car room terminal 16 is connected to the circuit breaker 6 via the connection line 17. It is connected to the connection conductor 9 on the lower terminal side.
Since the equipment unit is different compared to a two-stage product feeder having two circuit breakers, the control circuit or control equipment configured inside the door 4 and the control room 2 is different from that in the first embodiment. .
With such a configuration, a front operation / maintenance type switchgear can be obtained as in the case of FIG.

Next, a case where a front operation / rear maintenance type switchgear is configured using the circuit breaker module 102a having substantially the same configuration as the circuit breaker module 102 described in FIG. 6 will be described. FIG. 7 is a side cross-sectional view showing a front operation / rear maintenance type switchgear. The same parts as those in FIGS. 5 and 6 are given the same reference numerals, and description thereof will be omitted. Further, in order to avoid complication, parts equivalent to those in FIG. 5 and FIG.
The circuit breaker module 102a composed of the control room 2 and the circuit breaker room 3 is basically the same as the circuit breaker module 102 described with reference to FIG. 6, but on the back side of the bushing 5, the auxiliary machine carriage 15 side and the circuit breaker 6 side. The connection part that connects and is different.
The cable module 202 joined to the rear surface of the circuit breaker module 102a is the same as that in the case of FIG. 5, and the bus module 302 is arranged at the center.

The upper terminal of the circuit breaker 6 is connected to the external cable 22 via the bushing 5 and the external connection conductor 14. The lower terminal is connected to the main bus 32 via the bushing 5, the connection conductor 9, and the branch bus 34.
The auxiliary machine mounted on the auxiliary machine carriage 15 is connected to the outer line connection conductor 14 on the upper terminal side of the circuit breaker 6 via the auxiliary machine carriage room terminal 16 and the connection line 18.
With this configuration, a front operation / rear maintenance type switchgear can be obtained as in the case of FIG. 5 of the first embodiment.

As described above, according to the switchgear of the second embodiment, instead of the circuit breaker module that accommodates the two-stage product feeder of the first embodiment, the upper device unit is substantially the same size as the circuit breaker unit. Even when using the circuit breaker module composed of auxiliary equipment units consisting of auxiliary equipment such as transformers and lightning arresters as the lower equipment unit, even if it is a switchgear of a pull-in panel, just change the circuit breaker module, The basic parts of the bus module and cable module of the first embodiment can be diverted, and the front operation / front maintenance type and front operation / rear maintenance type switchgear can be configured in the same manner as in the first embodiment. An effect can be obtained.
In addition, since the design is a combination of modules, it is only necessary to change the specifications for each module. The design time and the production time are shortened, and the cost for manufacturing the switch gear can be reduced.

Embodiment 3 FIG.
FIG. 8 is a side sectional view of the circuit breaker module 103 used for the switchgear according to the third embodiment. FIG. 9 shows a switchgear using the circuit breaker module 103 of FIG. 8, wherein (a) shows a front view and (b) shows a side sectional view. In addition, illustration of the circuit breaker 6 accommodated in FIG. 8 is abbreviate | omitted. Since FIG. 9 corresponds to FIG. 3, the same parts as those in FIG.
As shown in FIG. 8, the circuit breaker module 103 according to the present embodiment is a circuit breaker unit to be accommodated, and a main bus 32 is disposed between the upper circuit breaker chamber 3a and the lower circuit breaker chamber 3b. It has the characteristic in the point. That is, the bus module is taken into the circuit breaker module 103.
On the rear side of the bushing 5, the lower terminal side of the upper circuit breaker 6 and the upper terminal side of the lower circuit breaker 6 are connected to the main bus 32 via connection conductors 19, respectively.

As shown in FIG. 9, a cable module 201 having the same height and depth as the circuit breaker module 103 is arranged and connected to the side surface of the circuit breaker module 103. The breaker 6 is accommodated in the breaker chamber of each stage, and the back terminal is fitted to the bushing 5. On the back side of the bushing 5, the upper terminal side of the upper circuit breaker 6 and the lower terminal side of the lower circuit breaker 6 are connected to the connection conductors 9 extending toward the lower side, and further horizontally from the connection conductors 9 of the respective phases. The external line connecting conductor 10 extending in the direction is connected. By connecting the external cable 22 to each phase of the upper and lower external connection conductors 10 in the cable module 201, a front operation / front maintenance type switchgear as shown in FIG. 9 is obtained.
As in the case of FIG. 3, the operation of the circuit breaker 6 and the maintenance and inspection of the main bus 32 and the external cable 22 can be performed from the front side.

Next, a case where a front operation / rear maintenance type switchgear is configured using the circuit breaker module 103a having the same basic configuration as FIG. 9 will be described.
FIG. 10 is a side sectional view of a front operation / rear maintenance type switchgear. As shown, a cable module 203 having the same height and width as the circuit breaker module 103a is arranged and connected to the rear surface of the circuit breaker module 103a.
The upper terminal side of the upper circuit breaker 6 and the lower terminal side of the lower circuit breaker 6 are connected to the external connection conductor 14 on the rear surface of the bushing 5, and the external connection cable 14 is connected to the external connection cable 14 to operate the front panel. -Rear maintenance type switchgear is configured. That is, the circuit breaker 6 can be operated and inspected from the front side, the main bus 32 can be inspected from the front side, and the external cable 22 can be inspected from the rear side.

  As described above, according to the switchgear of the third embodiment, the circuit unit in which the circuit breakers are mounted is arranged in two upper and lower stages, and the circuit breaker chamber in which the main bus is arranged between the upper and lower equipment units, The circuit breaker module is composed of a control room that is located in front of the circuit breaker room and has a door in the front and that stores the control circuit of the equipment unit. In contrast to the breaker module placed with the door at the front, the cable module is placed on the side of the breaker module, so that it is configured for front operation and maintenance, and the cable module is placed on the rear of the breaker module. As a result, the front operation / rear maintenance type and the front operation / rear maintenance type can be used. Until the main bus and the same, it is possible to increase the shared components. As a result, it is possible to increase production efficiency and reduce parts management costs by unifying the circuit breaker modules in front operation / front maintenance and front operation / rear maintenance.

  In the present invention, it is possible to freely combine the respective embodiments within the scope of the invention, and to appropriately change or omit the respective embodiments.

1 housing, 2 control room, 3 circuit breaker room, 3a upper circuit breaker room, 3b lower circuit breaker room,
3c Auxiliary machine room, 4 doors, 5 bushings, 6 circuit breakers, 7 busbar connection conductors,
8, 9, 13, 19 connecting conductor, 10, 14 outside line connecting conductor, 11 current transformer,
12 Zero-phase current transformer, 15 Auxiliary cart, 16 Auxiliary cart terminal, 17, 18 Connection line,
21, 23, 31 housing, 22 external cable, 32 main bus bar, 33, 34 branch bus bar, 101, 101a, 102, 102a, 103, 103a circuit breaker module,
201, 202, 203 Cable module, 301, 302 Bus module

Claims (5)

The device units are arranged in two upper and lower stages, and at least one of the device units is equipped with a circuit breaker mounted in a two-stage stacking device unit, and in front of the circuit breaker chamber. The circuit breaker module, which has a door on the front and is configured with a control room in which the control circuit of the device unit is accommodated, is a basic function module,
In addition, a bus module that accommodates the main bus and a cable module that accommodates the external cable,
With respect to the circuit breaker module arranged with the door at the front, it can be configured as either a front operation / front maintenance type or a front operation / rear maintenance type depending on the combination of the arrangement of the cable module and the bus bar module. A switchgear characterized by doing so. The switchgear according to claim 1,
The equipment unit in which the circuit breaker of the circuit breaker module is mounted has a bushing that can contact and separate from the terminal of the circuit breaker, and the bushing is provided with a current transformer and a zero-phase current transformer, A switchgear, characterized in that a connecting conductor connected to the external cable or the main bus bar is arranged at the rear part of the bushing. The switchgear according to claim 1 or claim 2,
The cable module is disposed on a side surface of the circuit breaker module, and the bus bar module is disposed on an upper surface or a lower surface of the circuit breaker module and the cable module, and is configured in the front operation / front maintenance type. And switchgear. The switchgear according to claim 1 or claim 2,
The cable module is disposed on the rear surface of the circuit breaker module, and the bus bar module is disposed in the center in the height direction inside the cable module, and is configured as the front operation / rear maintenance type. Switch gear to play. The equipment unit on which the circuit breaker is mounted is arranged in two upper and lower stages, the circuit breaker room in which the main bus is arranged between the upper and lower equipment units, and the door in front of the circuit breaker room A circuit breaker module configured with a control room in which the control circuit of the device unit is accommodated is a basic function module,
Furthermore, a cable module that accommodates an external cable is provided,
With respect to the circuit breaker module arranged with the door in the front, the cable module is arranged on the side of the circuit breaker module to constitute a front operation / front maintenance type, and on the rear surface of the circuit breaker module. A switchgear characterized by being configured as a front operation / rear maintenance type by arranging the cable module.

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