No power outage device

Abstract

To provide an uninterruptible power system in which constituent members can be shared among modules arranged such that their back faces face each other.SOLUTION: An uninterruptible power system 100 includes a pair of uninterruptible power supply modules (11, 12, 111, 112), a pair of input side modules (I), and a pair of output side modules (O). A bus bar is housed inside each of the pair of input side modules (I) and inside each of the pair of output side modules (O). From among the bus bars housed inside each of the pair of input side modules (I) and the bus bars housed inside each of the pair of output side modules (O), the shape of at least one bus bar is made common among modules arranged such that their back surfaces face each other.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an uninterruptible power supply device, and more particularly to an uninterruptible power supply device including an uninterruptible power supply module including a power conversion unit.

Background Art

[0002] Conventionally, an uninterruptible power supply device including an uninterruptible power supply module including a power conversion unit has been known (see, for example, Patent Document 1).

[0003] Patent Document 1 discloses an uninterruptible power supply device including an uninterruptible power supply module including a power conversion unit and a module that houses a bypass circuit for supplying power to a load outside the device without passing through the power conversion unit. In this uninterruptible power supply device, the uninterruptible power supply module and the module that houses the bypass circuit are arranged side by side in a row. The uninterruptible power supply module is connected to a load outside the device via the module that houses the bypass circuit.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Although not described in Patent Document 1 mentioned above, in order to increase the capacity of an uninterruptible power supply (UPS), the UPS module and the module housing the bypass circuit may be arranged in two rows, with the backs of the UPS modules in one row facing each other. In this case, the backs of different modules face each other. Therefore, the position of the bypass circuit module, which is the output module of one row, is far from the position of the bypass circuit module, which is the output module of the other row. Consequently, the external load and external wiring connecting to the UPS must be routed by the amount of distance between the output modules of one row and the output modules of the other row. Similarly, in the input modules, due to the positional relationship between the input modules of one row and the input modules of the other row, it is necessary to route the AC power supply and external wiring connecting to the UPS. Therefore, there is a problem in that the length of the external wiring of the UPS increases.

[0006] This invention was made to solve the above-mentioned problems, and one of its objectives is to provide an uninterruptible power supply (UPS) that can suppress an increase in the wiring length of the external wiring of the UPS. [Means for solving the problem]

[0007] To achieve the above objective, an uninterruptible power supply according to one aspect of this invention comprises: a pair of uninterruptible power supply modules, each including a power conversion unit that converts AC power input from an AC power source outside the device; a pair of input modules, which receive AC power input from an AC power source outside the device and are arranged adjacent to the pair of uninterruptible power supply modules, with their rear surfaces facing each other; and a pair of output modules, which output the power converted by the power conversion unit to an external load and are arranged adjacent to the pair of uninterruptible power supply modules, with their rear surfaces facing each other in the opposing direction of the pair of input modules. Busbars are housed inside each of the pair of input modules and inside each of the pair of output modules, and the shape of at least one of the busbars housed inside each of the pair of input modules and inside each of the pair of output modules is common to modules that are arranged with their rear surfaces facing each other.

[0008] In the uninterruptible power supply (UPS) according to the first aspect described above, as stated above, the pair of input modules are arranged adjacent to the pair of UPS modules and with their rear faces facing each other. The pair of output modules are also arranged adjacent to the pair of UPS modules and with their rear faces facing each other. This allows the pair of input modules to be brought closer together, and the pair of output modules to be brought closer together, compared to the case where the rear faces of different modules are arranged facing each other. As a result, the external wiring does not need to be routed more than necessary due to the positional relationship between the pair of input modules and the pair of output modules, thus suppressing an increase in the wiring length of the UPS's external wiring. Furthermore, the shape of at least one of the busbars housed inside each of the pair of input modules arranged with their rear faces facing each other, and the busbars housed inside each of the pair of output modules arranged with their rear faces facing each other, is common to the modules arranged with their rear faces facing each other. As a result, a common busbar is used in at least one pair of input modules that are arranged with their backs facing each other and whose adjacent module arrangements are different, and in at least one pair of output modules that are arranged with their backs facing each other and whose adjacent module arrangements are different. Consequently, even when a pair of identical modules are arranged with their backs facing each other, the number of busbar types can be suppressed.

[0009] In the uninterruptible power supply according to the first aspect described above, preferably, the shape of the busbars housed inside each of the pair of input modules and inside each of the pair of output modules is common to modules that are arranged so that their rear faces face each other. With this configuration, even when the rear faces of each of the pair of input modules and the rear faces of each of the pair of output modules are arranged so that a common busbar is used between the pair of input modules and between the pair of output modules, thus further suppressing the increase in the number of busbar types. As a result, the increase in the number of busbar types can be further suppressed while suppressing the increase in the wiring length of the external wiring of the uninterruptible power supply.

[0010] In a configuration where the shape of the busbars housed inside each of the pair of input modules and each of the pair of output modules is common to modules arranged so that their rear faces face each other, preferably, the pair of input modules includes multiple sets of different types of input modules arranged adjacent to each other, and the shape of the busbars housed inside each of the multiple sets of input modules is common to modules arranged so that their rear faces face each other. With this configuration, a common busbar is used in each of the multiple sets of different types of input modules, so even when multiple sets of different types of input modules are arranged so that their rear faces face each other, the number of busbar types can be suppressed.

[0011] In this case, preferably, the multiple pairs of input modules include a pair of input transformer modules that transform power input from an AC power source outside the device, a pair of input bypass modules to which bypass wiring is attached that connects the pair of input modules and the pair of output modules without going through a pair of uninterruptible power supply modules, and a pair of battery connection modules that are connected to a battery outside the device, wherein at least one of the pairs of input transformer modules, the pair of input bypass modules, and the pair of battery connection modules has a common busbar arranged inside such that, when viewed from the front of each module, the left and right sides are swapped. With this configuration, unlike when different modules are arranged with their backs facing each other, by arranging a pair of identical input modules with their backs facing each other, even if the arrangement of adjacent modules is reversed left to right when viewed from the front of each module with its back facing each other, it is possible to configure a module with a left-right inverted busbar arrangement in at least one of the pair of input transformer modules, a pair of input bypass modules, and a pair of battery connection modules without increasing the number of busbar types. As a result, it is possible to configure a module with a left-right inverted busbar arrangement while suppressing an increase in the number of busbar types, and to arrange a pair of identical input modules with their backs facing each other.

[0012] In a configuration in which the above-described plurality of pairs of input modules include a pair of input transformer modules, a pair of input bypass modules, and a pair of battery connection modules, preferably, the plurality of pairs of input modules further include a pair of power input modules into which AC power supplied from an AC power source outside the device is input, and each of the pair of power input modules contains a first input circuit breaker for interrupting the AC power supplied from an AC power source outside the device, and the first input circuit breaker is electrically connected to a busbar that is arranged in the left-right direction adjacent to the pair of input modules and the pair of uninterruptible power supply modules within each of the pair of power input modules. With this configuration, even if the other module containing the busbar to which the first input circuit breaker is electrically connected is located to the left or right of each of the pair of power input modules, the first input circuit breaker can be easily electrically connected to the busbar contained in the other adjacent module via the busbar that is arranged in the left-right direction.

[0013] In a configuration in which the above-mentioned multiple pairs of input modules include a pair of power input modules into which AC power supplied from an AC power source outside the device is input, preferably, each of the pair of input transformer modules has a transformer housed inside that transforms the power input from outside the device, and the shape of the busbars connected to the transformers is standardized between the pair of input transformer modules. With this configuration, even when the pair of input transformer modules are arranged so that their backs face each other, the increase in the number of busbar types can be suppressed.

[0014] In this case, preferably, the configuration further includes an inter-module busbar connecting the busbars housed inside each of the pair of input transformer modules to the busbars housed inside each of the pair of power input modules, wherein the mounting positions of the inter-module busbars relative to the busbars housed inside each of the pair of power input modules are configured such that, when viewed from the front side of each of the pair of power input modules, the left and right sides are swapped. With this configuration, unlike when the backs of different modules are arranged facing each other, even if the orientation of the pair of input transformer modules relative to each of the pair of power input modules is swapped when viewed from the front side of each of the pair of power input modules, by changing the mounting position of the inter-module busbar, a module with a left-right inverted busbar arrangement can be configured without increasing the number of busbar types.

[0015] In a configuration in which the above-mentioned multiple pairs of input-side modules include a pair of power input modules to which AC power supplied from an AC power source outside the device is input, preferably, each of the pair of input-side bypass modules houses a first bypass circuit breaker for interrupting the AC power supplied to the bypass wiring and a second input-side circuit breaker for interrupting the AC power supplied to the power conversion unit, and the shape of at least one of the busbars connected to the first bypass circuit breaker and the busbars connected to the second input-side circuit breaker is common to each of the pair of input-side bypass modules. With this configuration, a common busbar is used for at least one of the busbars connected to the first bypass circuit breaker and the busbars connected to each of the second input-side circuit breakers in each of the pair of input-side bypass modules, so that the increase in the number of busbar types can be suppressed even when the pair of input-side bypass modules are arranged so that their backs face each other.

[0016] In a configuration in which the above-mentioned multiple pairs of input modules include a pair of power input modules to which AC power supplied from an AC power source outside the device is input, preferably, each of the pair of battery connection modules is provided with a battery connection section for electrically connecting the battery outside the device to the power conversion unit, and the shape of the busbars connected to the battery connection sections is standardized between the pair of battery connection modules. With this configuration, even when the pair of battery connection modules are arranged so that their backs face each other, the increase in the number of busbar types can be suppressed.

[0017] In a configuration where the shape of the busbars housed inside each of the pair of input modules and each of the pair of output modules is common to modules arranged so that their rear faces face each other, preferably, the pair of output modules includes multiple sets of different types of output modules arranged adjacent to each other, and the shape of the busbars housed inside each of the multiple sets of output modules is common to modules arranged so that their rear faces face each other. With this configuration, a common busbar is used in each of the multiple sets of different types of output modules, so even when multiple sets of different types of output modules are arranged so that their rear faces face each other, the number of busbar types can be suppressed.

[0018] In this case, preferably, the multiple pairs of output modules include a pair of output bypass modules to which bypass wiring is attached that connects a pair of input modules and a pair of output modules without going through a pair of uninterruptible power supply modules, and a pair of external output modules that supply AC power to an external load. At least one of the pairs of output bypass modules and the pair of external output modules has a common busbar arranged inside such that, when viewed from the front of each module with the backs facing each other, the left and right sides are swapped. With this configuration, unlike when different modules are arranged with their backs facing each other, by arranging a pair of identical output modules with their backs facing each other, it is possible to configure a module with a left-right inverted busbar arrangement without increasing the number of busbar types, even when the arrangement of adjacent modules in at least one of the pairs of output bypass modules and the pairs of external output modules is swapped left and right when viewed from the front of each module with the backs facing each other. As a result, while suppressing the increase in the number of busbar types, it is possible to configure modules with the busbar arrangement reversed left to right, and to arrange a pair of identical output modules so that their backs face each other.

[0019] In the configuration where the plurality of pairs of input-side modules include a pair of output-side bypass modules and a pair of external output modules, preferably, each of the pair of output-side bypass modules houses a second bypass breaker for blocking the AC power supplied from the bypass wiring and a first output-side breaker for blocking the AC power supplied from the power conversion unit. Among the pair of output-side bypass modules, at least one of the shapes of the bus bars connected to the second bypass breaker and the bus bars connected to the first output-side breaker is shared. With this configuration, among the pair of output-side bypass modules, since a common bus bar is used for at least one of the bus bars connected to the second bypass breaker and the bus bars connected to the first output-side breaker, even when the pair of output-side bypass modules are arranged such that their respective backs face each other, an increase in the types of bus bars can be suppressed.

[0020] In this case, preferably, each of the pair of external output modules houses a second output-side breaker inside for blocking the AC power supplied to a load outside the device. Among the pair of external output modules, the shapes of the bus bars connected to the second output-side breaker are shared. With this configuration, even when the pair of external output modules are arranged such that their respective backs face each other, an increase in the types of bus bars can be suppressed.

Advantages of the Invention

[0021] According to the present invention, as described above, it is possible to provide an uninterruptible power supply device capable of suppressing an increase in the wiring length of the external wiring of the uninterruptible power supply device.

Brief Description of the Drawings

[0022] [Figure 1] It is an overall perspective view of an uninterruptible power supply device according to an embodiment of the present invention. [Figure 2] It is an overall view of the uninterruptible power supply device seen from above. [Figure 3]It is a diagram showing the circuit configuration of an uninterruptible power supply device according to an embodiment of the present invention. [Figure 4] It is a diagram showing the mounting positions of bus bars in the power input module arranged on the Y1 direction side and the bus bars in the input transformer module. [Figure 5] It is a diagram showing the mounting positions of bus bars in the power input module arranged on the Y2 direction side and the bus bars in the input transformer module. [Figure 6] It is a diagram showing the mounting positions of bus bars in the input side bypass module arranged on the Y1 direction side and the bus bars in the battery connection module. [Figure 7] It is a diagram showing the mounting positions of bus bars in the input side bypass module arranged on the Y2 direction side and the bus bars in the battery connection module. [Figure 8] It is a diagram showing the mounting positions of bus bars in the output side bypass module arranged on the Y1 direction side and the bus bars in the external output module. [Figure 9] It is a diagram showing the mounting positions of bus bars in the output side bypass module arranged on the Y2 direction side and the bus bars in the external output module. [Figure 10] It is a diagram showing the arrangement of the operation parts of the modules arranged on the Y1 direction side. [Figure 11] It is a diagram showing the arrangement of the operation parts of the modules arranged on the Y2 direction side. [Figure 12] It is a diagram showing the power input module arranged on the Y1 direction side with the door placed. [Figure 13] It is a diagram showing the power input module arranged on the Y2 direction side with the door placed.

Embodiments for Carrying Out the Invention

[0023] Hereinafter, embodiments embodying the present invention will be described based on the drawings.

[0024] (Overall configuration of an uninterruptible power supply) The overall configuration of the uninterruptible power supply 100 according to this embodiment of the present invention will be described with reference to Figures 1 to 3.

[0025] As shown in Figure 1, the uninterruptible power supply (UPS) 100 comprises UPS modules 11 and 12. The UPS modules 11 and 12 are arranged such that the front of each module faces the Y1 direction in the Y direction. The Y direction is an example of the "opposing direction" in the claims. The UPS 100 also comprises UPS modules 111 and 112, which are arranged on the Y2 direction side relative to the UPS modules 11 and 12. The UPS modules 11 and 111 are arranged so that their rear surfaces face each other. Similarly, the UPS modules 12 and 112 are also arranged so that their rear surfaces face each other. The UPS modules 11 and 111 are examples of the "pair of UPS modules" in the claims. The UPS modules 12 and 112 are also examples of the "pair of UPS modules" in the claims.

[0026] Furthermore, the uninterruptible power supply (UPS) 100 includes input module I (see Figure 1) arranged adjacent to the UPS modules 11, 12, 111, and 112 in the X direction. AC power is input to input module I from an external AC power source 201 (see Figure 3). Note that the X direction is an example of the "left-right direction in which a pair of input modules and a pair of UPS modules are adjacent" as defined in the claims. Input module I includes multiple sets of modules of different types arranged adjacent to each other. Specifically, as shown in Figure 1, the UPS 100 includes, as input module I, a power input module 2, a power input module 102, an input transformer module 3, an input transformer module 103, an input bypass module 4, an input bypass module 104, a battery connection module 5, and a battery connection module 105.

[0027] Furthermore, the uninterruptible power supply (UPS) 100 includes output modules O (see Figure 1) arranged adjacent to the UPS modules 11, 12, 111, and 112 in the X direction. The output modules O output the power converted in the power conversion unit 10 to an external load 202 (see Figure 3). The output modules O include multiple pairs of modules of different types arranged adjacent to each other. Specifically, as shown in Figure 1, the UPS 100 includes output bypass module 7, output bypass module 107, external output module 8, and external output module 108 as output modules O.

[0028] Furthermore, the uninterruptible power supply (UPS) 100 includes bypass wiring 9 that connects the input module I and the output module O without going through the UPS modules 11, 12, 111, and 112.

[0029] The power input module 2, input transformer module 3, input bypass module 4, and battery connection module 5 are arranged so that the front of each module faces the Y1 direction. In addition, the power input module 102 paired with power input module 2, the input transformer module 103 paired with input transformer module 3, the input bypass module 104 paired with input bypass module 4, and the battery connection module 105 paired with battery connection module 5 are each positioned on the Y2 direction relative to power input module 2, input transformer module 3, input bypass module 4, and battery connection module 5.

[0030] Power input modules 2 and 102 are examples of the "pair of input modules" in the claims. Similarly, input transformer modules 3 and 103 are also examples of the "pair of input modules" in the claims. Furthermore, input bypass modules 4 and 104 are also examples of the "pair of input modules" in the claims. Finally, battery connection modules 5 and 105 are also examples of the "pair of input modules" in the claims.

[0031] Each of the power input modules 2 and 102 receives AC power supplied from an external AC power source 201. The power input modules 2 and 102 are arranged so that their rear surfaces face each other. Each of the power input modules 2 and 102 is also provided with openings 2a and 102a, respectively, for drawing the power cable 301 (see Figures 4 and 5), which is connected to the external AC power source 201, into the module.

[0032] As shown in Figure 1, each of the input transformer modules 3 and 103 transforms the power input from the AC power supply 201 outside the device. The input transformer modules 3 and 103 are arranged so that their rear surfaces face each other.

[0033] Bypass wiring 9 is attached to each of the input bypass modules 4 and 104. Each of the input bypass modules 4 and 104 is provided with a bus duct 41 to which the bypass wiring 9 is connected. The input bypass modules 4 and 104 are arranged so that their rear surfaces face each other.

[0034] Each of the battery connection modules 5 and 105 is provided with a bus duct 51 for electrically connecting the external battery 203 to the power conversion unit 10. The bus duct 51 is an example of the "battery connection unit" in the claims. Each of the battery connection modules 5 and 105 is connected to the external battery 203 (see Figure 3) via the bus duct 51. The battery connection modules 5 and 105 are arranged so that their rear surfaces face each other.

[0035] As shown in Figure 1, the uninterruptible power supply (UPS) 100 includes control modules 6 and 106. Control module 6 is positioned in the X direction between the battery connection module 5 and the UPS module 11. Control module 106 is positioned in the X direction between the battery connection module 105 and the UPS module 111. Control module 6 is configured to control the power conversion by the UPS modules 11 and 12. Control module 106 is configured to control the power conversion by the UPS modules 111 and 112. Each of control modules 6 and 106 includes a control board on which a CPU (Central Processing Unit), ROM (Read Only Memory), or RAM (Random Access Memory) is mounted. Control modules 6 and 106 are positioned so that their rear surfaces face each other.

[0036] Furthermore, the output bypass module 7 and the external output module 8 are arranged so that the front of each module faces the Y1 direction. In addition, the output bypass module 107, which is paired with the output bypass module 7, and the external output module 108, which is paired with the external output module 8, are each positioned on the Y2 direction relative to the output bypass module 7 and the external output module 8.

[0037] The output bypass modules 7 and 107 are examples of the "pair of input modules" in the claims. The external output modules 8 and 108 are also examples of the "pair of output modules" in the claims.

[0038] Bypass wiring 9 is attached to each of the output bypass modules 7 and 107. Specifically, each of the output bypass modules 7 and 107 is provided with a bus duct 71 to which the bypass wiring 9 is connected. The output bypass modules 7 and 107 are arranged so that their rear surfaces face each other.

[0039] External output modules 8 and 108 supply AC power to an external load 202 (see Figure 3). External output modules 8 and 108 are arranged so that their rear surfaces face each other. Each of the external output modules 8 and 108 is also provided with bus ducts 81 and 82 connected to the power cable 302 (see Figures 8 and 9). External output modules 8 and 108 are arranged so that their rear surfaces face each other.

[0040] As shown in Figure 2, the following modules are arranged in the order shown from the X2 direction: power input module 2, input transformer module 3, input bypass module 4, battery connection module 5, control module 6, uninterruptible power supply module 11, uninterruptible power supply module 12, output bypass module 7, and external output module 8. Then, the following modules are arranged in the order shown from the X2 direction: power input module 102, input transformer module 103, input bypass module 104, battery connection module 105, control module 106, uninterruptible power supply module 111, uninterruptible power supply module 112, output bypass module 107, and external output module 108.

[0041] Furthermore, the power input module 2, input transformer module 3, input bypass module 4, battery connection module 5, control module 6, output bypass module 7, and external output module 8 are each provided with openable / closable doors D1, D2, D3, D4, D5, D6, and D7 on their front side (Y1 direction side).

[0042] Furthermore, the power input module 102, input transformer module 103, input bypass module 104, battery connection module 105, control module 106, output bypass module 107, and external output module 108 are each provided with openable and closable doors D8, D9, D10, D11, D12, D13, and D14 on their front side (Y2 direction side).

[0043] As shown in Figure 3, each of the uninterruptible power supply modules 11, 12, 111, and 112 includes a power conversion unit 10 that converts AC power input from an external AC power source 201. The power conversion unit 10 includes a rectifier circuit 10a, a chopper circuit 10b, and an inverter circuit 10c. The rectifier circuit 10a has the function of converting AC power input to the power conversion unit 10 into DC power. The chopper circuit 10b is configured, for example, as a 3-level chopper circuit. The chopper circuit 10b has the function of transforming and outputting the voltage input from an external battery 203. The DC power input from the battery 203 is input to the chopper circuit 10b via a conductor, a capacitor, and a DC reactor (not shown). The inverter circuit 10c has the function of converting the DC power input from the rectifier circuit 10a and the chopper circuit 10b into AC power.

[0044] Each of the power input modules 2 and 102 includes circuit breakers 21 and 22 for interrupting AC power supplied from an external AC power source 201. Note that circuit breakers 21 and 22 are examples of the "first input side circuit breakers" in the claims. Each of the input transformer modules 3 and 103 includes a transformer 31 for transforming power input from outside the device.

[0045] Each of the input-side bypass modules 4 and 104 includes a circuit breaker 42 for interrupting the AC power supplied to the bypass wiring 9, and a circuit breaker 43 for interrupting the AC power supplied to the power conversion unit 10. The circuit breakers 42 and 43 are examples of the "first bypass circuit breaker" and "second input-side circuit breaker" as defined in the claims, respectively. Each of the control modules 6 and 106 is provided with a bypass path 60. The bypass path 60 includes thyristors and circuit breakers (not shown).

[0046] Each of the output-side bypass modules 7 and 107 includes a circuit breaker 72 for interrupting AC power supplied from the bypass wiring 9, and a circuit breaker 73 for interrupting AC power supplied from the power conversion unit 10. The circuit breakers 72 and 73 are examples of the "second bypass circuit breaker" and "first output-side circuit breaker" as defined in the claims, respectively.

[0047] Each of the external output modules 8 and 108 is equipped with circuit breakers 83 and 84 for interrupting the AC power supplied to the external load 202. The circuit breakers 83 and 84 are examples of the "second output side circuit breakers" as defined in the claims.

[0048] (Configuration of the power input module) As shown in Figure 4, the power input module 2 houses circuit breakers 21 and 22 internally. Also, as shown in Figure 5, the power input module 102 houses circuit breakers 21 and 22 internally.

[0049] As shown in Figure 4, within the power input module 2, circuit breakers 21 and 22 are electrically connected to busbars 23a, 23b, and 23c, which are arranged in the left-right direction (X direction). Specifically, circuit breaker 21 is connected to busbars 23a, 23b, and 23c via busbars 24a, 24b, and 24c. Circuit breaker 21 is also connected to power cable 301 via busbars 25a, 25b, and 25c. Circuit breaker 22 is connected to busbars 23a, 23b, and 23c via busbars 26a, 26b, and 26c. Circuit breaker 22 is also connected to power cable 301 via busbars 27a, 27b, and 27c.

[0050] Furthermore, within the power input module 102, circuit breakers 21 and 22 are electrically connected to busbars 123a, 123b, and 123c, which are arranged in the left-right direction (X direction). Specifically, circuit breaker 21 is connected to busbars 123a, 123b, and 123c via busbars 124a, 124b, and 124c. Circuit breaker 21 is also connected to power cable 301 via busbars 125a, 125b, and 125c. Circuit breaker 22 is connected to busbars 123a, 123b, and 123c via busbars 126a, 126b, and 126c. Circuit breaker 22 is also connected to power cable 301 via busbars 127a, 127b, and 127c.

[0051] Power input modules 2 and 102 are modules with identical internal configurations and common specifications. Specifically, the placement of circuit breakers 21 and 22 is the same in both power input modules 2 and 102. More precisely, when viewed from the front of each power input module, circuit breakers 21 and 22 are positioned slightly to the left within each module. In addition, the placement and shape of the busbars are also the same in both power input modules 2 and 102. Specifically, the busbars 23a, 23b, 23c, 24a, 24b, 24c, 25a, 25b, 25c, 26a, 26b, 26c, 27a, 27b, and 27c (see Figure 4) of power input module 2 are arranged and shaped in the same way as the busbars 123a, 123b, 123c, 124a, 124b, 124c, 125a, 125b, 125c, 126a, 126b, 126c, 127a, 127b, and 127c (see Figure 5) of power input module 102. In this specification, "shape is the same" includes the concept of having the same shape and dimensions.

[0052] (Configuration of the input transformer module) As shown in Figure 4, the input transformer module 3 houses a transformer 31. Similarly, as shown in Figure 5, the input transformer module 103 also houses a transformer 31. In both input transformer modules 3 and 103, the transformer 31 is located in the center of the module in the X direction. Cables 32a, 32b, and 32c are connected to the transformer 31 of input transformer module 3. Cables 132a, 132b, and 132c are connected to the transformer 31 of input transformer module 103. The cables 32a, 32b, and 32c connected to the transformer 31 of input transformer module 3 (see Figure 4) have the same cable length as the cables 132a, 132b, and 132c connected to the transformer 31 of input transformer module 103 (see Figure 5).

[0053] Furthermore, the shape of the busbars connected to the transformer 31 is standardized in input transformer modules 3 and 103. Specifically, the busbars 33a, 33b, and 33c (see Figure 4) connected to the transformer 31 of input transformer module 3 have the same shape as the busbars 133a, 133b, and 133c (see Figure 5) connected to the transformer 31 of input transformer module 103. Note that busbars 33a and 33c are arranged so as to sandwich busbar 33b in the Y direction. Similarly, busbars 133a and 133c are arranged so as to sandwich busbar 133b in the Y direction. The busbars 33a, 33b, and 33c connected to the transformer 31 extend along the X direction toward the input bypass module 4 (X1 direction). Also, the busbars 133a, 133b, and 133c connected to the transformer 31 extend along the X direction toward the input bypass module 104 (X1 direction).

[0054] The input transformer modules 3 and 103 (a pair of input transformer modules) are arranged so that their rear surfaces face each other. When viewed from the front of each module, the common busbars 33a, 33b, 33c, 133a, 133b, and 133c are arranged inside such that their left and right sides are reversed.

[0055] Specifically, inside the input transformer module 3, when viewed from the Y1 direction, busbars 33c, 33b, and 33a are arranged from right to left in this order. On the other hand, inside the input transformer module 103, when viewed from the Y2 direction, busbars 133a, 133b, and 133c are arranged from right to left in this order.

[0056] Furthermore, inside the input transformer module 3, as shown in Figure 4, the busbars 33a, 33b, and 33c are located to the right of the cables 32a, 32b, and 32c when viewed from the Y1 direction. On the other hand, inside the input transformer module 103, as shown in Figure 5, the busbars 133a, 133b, and 133c are located to the left of the cables 132a, 132b, and 132c when viewed from the Y2 direction.

[0057] Inside the input transformer module 3, busbars 33a, 33b, and 33c are connected to each of the terminals of the transformer 31, which is located in the center of the module in the X direction, and corresponds to the multiple phases (U phase, V phase, and W phase) of the AC power. Inside the input transformer module 103, busbars 133a, 133b, and 133c are connected to each of the terminals of the transformer 31, which is located in the center of the module in the X direction, and corresponds to the multiple phases (U phase, V phase, and W phase) of the AC power.

[0058] Inside input transformer module 3, busbar 33a is connected to the terminal of transformer 31 corresponding to the W phase of AC power. On the other hand, inside input transformer module 103, busbar 133c is connected to the terminal of transformer 31 corresponding to the W phase of AC power. Inside input transformer module 3, busbar 33c is connected to the terminal of transformer 31 corresponding to the U phase of AC power. On the other hand, inside input transformer module 103, busbar 133a is connected to the terminal of transformer 31 corresponding to the U phase of AC power. Also, inside input transformer module 3, busbar 33b is connected to the terminal of transformer 31 corresponding to the V phase of AC power. Inside input transformer module 103, busbar 133b is connected to the terminal of transformer 31 corresponding to the V phase of AC power.

[0059] (Intermodule busbar) As shown in Figure 4, inter-module busbars 34a, 34b, and 34c are arranged from inside the power input module 2 to inside the input transformer module 3. Also, as shown in Figure 5, inter-module busbars 134a, 134b, and 134c are arranged from inside the power input module 102 to inside the input transformer module 103. Note that inter-module busbars 34a, 34b, and 34c have the same shape as inter-module busbars 134a, 134b, and 134c, respectively.

[0060] The inter-module busbars 34a, 34b, and 34c connect the cables 32a, 32b, and 32c housed inside the input transformer module 3 to the busbars 23a, 23b, and 23c housed inside each of the power input modules 2.

[0061] Furthermore, the inter-module busbars 134a, 134b, and 134c connect the cables 132a, 132b, and 132c housed inside the input transformer module 103 to the busbars 123a, 123b, and 123c housed inside each of the power input modules 102.

[0062] The mounting positions of the inter-module busbars to the busbars housed inside each of the power input modules 2 and 102 (a pair of power input modules) are reversed left to right when viewed from the front side of each of the power input modules 2 and 102.

[0063] Specifically, as shown in Figure 4, in power input module 2, when viewed from the Y1 direction, inter-module busbars 34a, 34b, and 34c are attached to the right of busbars 23a, 23b, and 23c. On the other hand, as shown in Figure 5, in power input module 102, when viewed from the Y1 direction, inter-module busbars 134a, 134b, and 134c are attached to the left of busbars 123a, 123b, and 123c. This allows power input modules 2 and 102, which are modules with common specifications, to be used interchangeably between modules on the Y1 direction side, which are located on the X2 direction side of input transformer module 3, and modules on the Y2 direction side, which are located on the X2 direction side of input transformer module 103.

[0064] (Configuration of the input bypass module) As shown in Figure 6, a bus duct 41 is provided on the upper side (Z1 direction side) of the input bypass module 4. Circuit breakers 42 and 43 are housed in the input bypass module 4. Also, as shown in Figure 7, a bus duct 41 is provided on the upper side (Z1 direction side) of the input bypass module 104. Circuit breakers 42 and 43 are housed in the input bypass module 104.

[0065] In input-side bypass modules 4 and 104, the shape of the busbars connected to the circuit breaker 42 is standardized. Specifically, the busbars 44a, 44b, 44c, 44d, 45a, 45b, 45c, and 45d (see Figure 6) connected to the circuit breaker 42 of input-side bypass module 4 have the same shape as the busbars 144a, 144b, 144c, 144d, 145a, 145b, 145c, and 145d (see Figure 7) connected to the circuit breaker 42 of input-side bypass module 104. As shown in Figure 6, busbars 44a, 44b, 44c, and 44d are connected to the bypass wiring 9 via the bus duct 41 of input-side bypass module 4. Also, as shown in Figure 7, busbars 144a, 144b, 144c, and 144d are connected to the bypass wiring 9 via the bus duct 41 of input-side bypass module 104.

[0066] Furthermore, the shape of the busbars connected to the circuit breaker 43 is standardized in input-side bypass modules 4 and 104. Specifically, the busbars 46a, 46b, 46c, 46d, 47a, 47b, 47c, and 47d (see Figure 6) connected to the circuit breaker 43 of input-side bypass module 4 have the same shape as the busbars 146a, 146b, 146c, 146d, 147a, 147b, 147c, and 147d (see Figure 7) connected to the circuit breaker 43 of input-side bypass module 104.

[0067] Furthermore, the arrangement of the bus duct 41, circuit breakers 42 and 43 is such that, when viewed from the front side of the input-side bypass modules 4 and 104, they are mirror images of each other.

[0068] The input bypass modules 4 and 104 (a pair of input bypass modules) are arranged so that their rear faces face each other. When viewed from the front of each module, the common busbars 44a, 44b, 44c, 44d, 45a, 45b, 45c, 45d, 46a, 46b, 46c, 46d, 47a, 47b, 47c, 47d, 144a, 144b, 144c, 144d, 145a, 145b, 145c, 145d, 146a, 146b, 146c, 146d, 147a, 147b, 147c, and 147d are arranged inside the modules so that their rear faces face each other, and their left and right sides are swapped when viewed from the front of each module.

[0069] Specifically, inside the input bypass module 4, when viewed from the Y1 direction, bus bars 44a, 44b, 44c, and 44d are arranged from left to right in this order. On the other hand, inside the input bypass module 104, when viewed from the Y2 direction, bus bars 144d, 144c, 144b, and 144a are arranged from left to right in this order.

[0070] Furthermore, inside the input bypass module 4, when viewed from the Y1 direction, busbars 45a, 45b, 45c, and 45d are arranged from left to right in this order. On the other hand, inside the input bypass module 104, when viewed from the Y2 direction, busbars 145d, 145c, 145b, and 145a are arranged from left to right in this order.

[0071] Furthermore, inside the input bypass module 4, when viewed from the Y1 direction, bus bars 46a, 46b, 46c, and 46d are arranged from left to right in this order. On the other hand, inside the input bypass module 104, when viewed from the Y2 direction, bus bars 146d, 146c, 146b, and 146a are arranged from left to right in this order.

[0072] Furthermore, inside the input bypass module 4, when viewed from the Y1 direction, busbars 47a, 47b, 47c, and 47d are arranged from left to right in this order. On the other hand, inside the input bypass module 104, when viewed from the Y2 direction, busbars 147d, 147c, 147b, and 147a are arranged from left to right in this order.

[0073] (Battery connection module configuration) As shown in Figure 6, a bus duct 51 is provided on the upper side (Z1 direction side) of the battery connection module 5. Also, as shown in Figure 7, a bus duct 51 is provided on the upper side (Z1 direction side) of the battery connection module 105. A power cable 303, which is connected to a battery 203 outside the device, is connected to the bus duct 51, and the bus duct 51 is connected to the battery 203 (see Figure 3) via the power cable 303.

[0074] In battery connection modules 5 and 105, the shape of the busbars connected to the bus duct 51 is standardized. Specifically, the busbars 52a and 52b (see Figure 6) connected to the bus duct 51 of battery connection module 5 have the same shape as the busbars 152a and 152b (see Figure 7) connected to the bus duct 51 of battery connection module 105.

[0075] The battery connection modules 5 and 105 (a pair of battery connection modules) are arranged so that their rear faces face each other. When viewed from the front of each module, the common busbars 52a, 52b, 152a, and 152b are arranged inside the modules so that their left and right sides are reversed.

[0076] Specifically, inside the battery connection module 5, when viewed from the Y1 direction, bus bars 52a and 52b are arranged from left to right in this order. On the other hand, inside the battery connection module 105, when viewed from the Y2 direction, bus bars 152b and 152a are arranged from left to right in this order.

[0077] (Configuration of the output bypass module) As shown in Figure 8, a bus duct 71 is provided on the upper side (Z1 direction side) of the output bypass module 7. Circuit breakers 72 and 73 are housed in the output bypass module 7. Also, as shown in Figure 9, a bus duct 71 is provided on the upper side (Z1 direction side) of the output bypass module 107. Circuit breakers 72 and 73 are housed in the output bypass module 107.

[0078] In output bypass modules 7 and 107, the busbar shapes connected to the bus duct 71 are standardized. Specifically, the busbars 74a, 74b, 74c, and 74d (see Figure 8) connected to the bus duct 71 of output bypass module 7 have the same shape as the busbars 174a, 174b, 174c, and 174d (see Figure 9) connected to the bus duct 71 of output bypass module 107. Busbars 74a, 74b, 74c, and 74d are connected to the bypass wiring 9 via the bus duct 71 of output bypass module 7. Similarly, busbars 174a, 174b, 174c, and 174d are connected to the bypass wiring 9 via the bus duct 71 of output bypass module 107.

[0079] Furthermore, the busbar shapes connected to the circuit breaker 72 are standardized in output bypass modules 7 and 107. Specifically, the busbars 75a, 75b, 75c, and 75d (see Figure 8) connected to the circuit breaker 72 of output bypass module 7 have the same shape as the busbars 175a, 175b, 175c, and 175d (see Figure 9) connected to the circuit breaker 72 of output bypass module 107.

[0080] Furthermore, the shape of the busbars connected to the circuit breaker 73 is standardized in output bypass modules 7 and 107. Specifically, the busbars 76a, 76b, 76c, and 76d (see Figure 8) connected to the circuit breaker 73 of output bypass module 7 have the same shape as the busbars 176a, 176b, 176c, and 176d (see Figure 9) connected to the circuit breaker 73 of output bypass module 107.

[0081] Furthermore, the arrangement of the bus duct 71, circuit breakers 72 and 73 is such that, when viewed from the front side of the output bypass modules 7 and 107, they are mirror images of each other.

[0082] Furthermore, in the output bypass modules 7 and 107 (a pair of output bypass modules), the common busbars 74a, 74b, 74c, 74d, 75a, 75b, 75c, 75d, 76a, 76b, 76c, 76d, 174a, 174b, 174c, 174d, 175a, 175b, 175c, 175d, 176a, 176b, 176c, and 176d are arranged inside the modules so that their rear faces are opposite each other, and when viewed from the front of each module, their left and right sides are swapped.

[0083] Specifically, inside the output bypass module 7, when viewed from the Y1 direction, busbars 74a, 74b, 74c, and 74d are arranged from left to right in this order. On the other hand, inside the output bypass module 107, when viewed from the Y2 direction, busbars 174d, 174c, 174b, and 174a are arranged from left to right in this order.

[0084] Furthermore, inside the output bypass module 7, when viewed from the Y1 direction, busbars 75a, 75b, 75c, and 75d are arranged from left to right in this order. On the other hand, inside the output bypass module 107, when viewed from the Y2 direction, busbars 175d, 175c, 175b, and 175a are arranged from left to right in this order.

[0085] Furthermore, inside the output bypass module 7, when viewed from the Y1 direction, busbars 76a, 76b, 76c, and 76d are arranged from left to right in this order. On the other hand, inside the output bypass module 107, when viewed from the Y2 direction, busbars 176d, 176c, 176b, and 176a are arranged from left to right in this order.

[0086] (Configuration of the external output module) As shown in Figure 8, bus ducts 81 and 82 are provided on the upper side (Z1 direction side) of the external output module 8. Circuit breakers 83 and 84 are housed inside the external output module 8. Also, as shown in Figure 9, bus ducts 81 and 82 are provided on the upper side (Z1 direction side) of the external output module 108. Circuit breakers 83 and 84 are also housed inside the external output module 108. Power cables 302, which are connected to an external load 202 (see Figure 3), are connected to bus ducts 81 and 82, and the bus ducts 81 and 82 are connected to the load 202 via power cables 302.

[0087] In external output modules 8 and 108, the shape of the busbars connected to the circuit breaker 83 is standardized. Specifically, the busbars 85a, 85b, 85c, 85d, 86a, 86b, 86c, and 86d (see Figure 8) connected to the circuit breaker 83 of external output module 8 have the same shape as the busbars 185a, 185b, 185c, 185d, 186a, 186b, 186c, and 186d (see Figure 9) connected to the circuit breaker 83 of external output module 108.

[0088] Furthermore, the shape of the busbars connected to the circuit breaker 84 is standardized in external output modules 8 and 108. Specifically, the busbars 87a, 87b, 87c, 87d, 88a, 88b, 88c, and 88d (see Figure 8) connected to the circuit breaker 84 of external output module 8 have the same shape as the busbars 187a, 187b, 187c, 187d, 188a, 188b, 188c, and 188d (see Figure 9) connected to the circuit breaker 84 of external output module 108.

[0089] Furthermore, the arrangement of bus ducts 81 and 82, and circuit breakers 83 and 84 is such that they are mirror images of each other when viewed from the front side of external output modules 8 and 108, respectively.

[0090] Furthermore, in the external output modules 8 and 108 (a pair of external output modules), the common busbars 85a, 85b, 85c, 85d, 86a, 86b, 86c, 86d, 87a, 87b, 87c, 87d, 88a, 88b, 88c, 88d, 185a, 185b, 185c, 185d, 186a, 186b, 186c, 186d, 187a, 187b, 187c, 187d, 188a, 188b, 188c, and 188d are each arranged internally in such a way that, when viewed from the front of each module, the left and right sides are swapped.

[0091] Specifically, inside the external output module 8, when viewed from the Y1 direction, bus bars 85a, 85b, 85c, and 85d are arranged from left to right in this order. On the other hand, inside the external output module 108, when viewed from the Y2 direction, bus bars 185d, 185c, 185b, and 185a are arranged from left to right in this order.

[0092] Furthermore, inside the external output module 8, when viewed from the Y1 direction, the bus bars 86a, 86b, 86c, and 86d are arranged from left to right in this order. On the other hand, inside the external output module 108, when viewed from the Y2 direction, the bus bars 186d, 186c, 186b, and 186a are arranged from left to right in this order.

[0093] Furthermore, inside the external output module 8, when viewed from the Y1 direction, the bus bars 87a, 87b, 87c, and 87d are arranged from left to right in this order. On the other hand, inside the external output module 108, when viewed from the Y2 direction, the bus bars 187d, 187c, 187b, and 187a are arranged from left to right in this order.

[0094] Furthermore, inside the external output module 8, when viewed from the Y1 direction, bus bars 88a, 88b, 88c, and 88d are arranged from left to right in this order. On the other hand, inside the external output module 108, when viewed from the Y2 direction, bus bars 188d, 188c, 188b, and 188a are arranged from left to right in this order.

[0095] (Layout of the control panel) As shown in Figure 10, the power input module 2 and the input-side bypass module 4 are each provided with operating sections 91 and 92 on their front sides (Y1 direction) to receive input operations for their respective modules. Similarly, the output-side bypass module 7 and the external output module 8 are each provided with operating sections 93 and 94 on their front sides (Y1 direction) to receive input operations for their respective modules. Each of the operating sections 91 to 94 is composed of multiple switches.

[0096] As shown in Figure 11, the power input module 102 and the input-side bypass module 104 are each provided with operating sections 191 and 192 on their front sides (Y2 direction side) to receive input operations for their respective modules. Similarly, the output-side bypass module 107 and the external output module 108 are each provided with operating sections 193 and 194 on their front sides (Y2 direction side) to receive input operations for their respective modules. Each of the operating sections 191 to 194 is composed of multiple switches.

[0097] The arrangement of the operating sections 91 and 191, as viewed from the front of each power input module 2 and 102, is the same between power input modules 2 and 102. Specifically, the operating sections 91 and 191 are positioned slightly to the right of each module when viewed from the front. Furthermore, the arrangement of the multiple switches constituting each of the operating sections 91 and 191 is the same between power input modules 2 and 102.

[0098] The arrangement of the operating sections 92 and 192, as viewed from the front of each of the input bypass modules 4 and 104, is the same between the input bypass modules 4 and 104. Specifically, the operating sections 92 and 192 are positioned slightly to the right of each module when viewed from the front. Furthermore, the arrangement of the multiple switches constituting each of the operating sections 92 and 192 is the same between the input bypass modules 4 and 104.

[0099] The arrangement of the operating sections 93 and 193, as viewed from the front of each output bypass module 7 and 107, is the same for both modules. Specifically, the operating sections 93 and 193 are positioned slightly to the right of each module when viewed from the front. Furthermore, the arrangement of the multiple switches constituting each of the operating sections 93 and 193 is the same between the output bypass modules 7 and 107.

[0100] The arrangement of the control units 94 and 194, as viewed from the front of each external output module 8 and 108, is the same for both modules. Specifically, the control units 94 and 194 are positioned slightly to the right of each module when viewed from the front. Furthermore, the arrangement of the multiple switches constituting each of the control units 94 and 194 is the same between the external output modules 8 and 108.

[0101] By arranging the control units 91, 92, 93, 94, 191, 192, 193, and 194, and the multiple switches constituting the control units 91, 92, 93, 94, 191, 192, 193, and 194 as described above, users can operate modules facing each other on their backs with the same feel. This prevents user errors.

[0102] (Arrangement of control circuits in the power input module) Furthermore, as shown in Figure 12, a control circuit device 28 including a relay is mounted on the inner surface 2b of the door D1 provided on the power input module 2. Also, as shown in Figure 13, in the power input module 102, similar to the power input module 2, a control circuit device 29 including a relay is mounted on the inner surface 102b of the door D8 provided on the power input module 102. As a result, control circuit devices 28 and 29 are mounted on doors D1 and D2 respectively, so that working space inside the housing frame can be secured, thereby suppressing a decrease in workability during equipment installation or maintenance.

[0103] (Effects of the embodiment) In this embodiment, the following effects can be obtained.

[0104] In this embodiment, as described above, the pair of input modules I are arranged adjacent to the uninterruptible power supply modules 11, 12, 111, and 112, and their rear surfaces face each other. The pair of output modules O are also arranged adjacent to the uninterruptible power supply modules 11, 12, 111, and 112, and their rear surfaces face each other. This allows the pair of input modules I and the pair of output modules O to be brought closer together compared to the case where the rear surfaces of different modules face each other. As a result, the external wiring does not need to be routed more than necessary due to the positional relationship between the pair of input modules I and the pair of output modules O, thus suppressing an increase in the wiring length of the external wiring of the uninterruptible power supply 100. Furthermore, the shape of the busbars housed inside each of the pair of input modules I and the pair of output modules O, which are arranged with their rear surfaces facing each other, is common to the modules that are arranged with their rear surfaces facing each other. As a result, a common busbar is used for a pair of input modules I, which are arranged with their backs facing each other and whose adjacent module arrangements are different, and for a pair of output modules O, which are arranged with their backs facing each other and whose adjacent module arrangements are different. Consequently, even when a pair of identical modules are arranged with their backs facing each other, the number of busbar types can be suppressed.

[0105] Furthermore, in this embodiment, as described above, the shape of the busbar housed inside each of the multiple pairs of input modules I is standardized for modules that are arranged so that their rear surfaces face each other. As a result, a common busbar is used for each of the multiple pairs of input modules I of different types, so even when multiple pairs of input modules I of different types are arranged so that their rear surfaces face each other, the number of busbar types can be suppressed.

[0106] Furthermore, in this embodiment, as described above, the input transformer modules 3 and 103 (a pair of input transformer modules), the input bypass modules 4 and 5 (a pair of input bypass modules), and the battery connection modules 5 and 105 (a pair of battery connection modules) are arranged so that their rear faces face each other. In this configuration, unlike the case where different modules are arranged so that their rear faces face each other, by arranging a pair of identical input modules I so that their rear faces face each other, even if the arrangement of adjacent modules is reversed left to right when viewed from the front of modules arranged so that their rear faces face each other, it is possible to configure modules in the input transformer modules 3 and 103, the input bypass modules 4 and 104, and the battery connection modules 5 and 105 with the busbar arrangement reversed left to right without increasing the number of busbar types. As a result, while suppressing the increase in the number of busbar types, it is possible to configure a module with the busbar arrangement reversed left to right, and to arrange a pair of identical input modules I so that their backs face each other.

[0107] Furthermore, in this embodiment, as described above, each of the power input modules 2 and 102 (a pair of power input modules) houses internal circuit breakers 21 and 22 for interrupting AC power supplied from an external AC power source 201, and the circuit breakers 21 and 22 are electrically connected to busbars arranged in the X direction within each of the power input modules 2 and 102. With this configuration, even if other modules housing the busbars to which the circuit breakers 21 and 22 are electrically connected are located to the left or right of each of the power input modules 2 and 102, the circuit breakers 21 and 22 can be easily electrically connected to the busbars housed in the other adjacent modules via busbars arranged in the left-right direction.

[0108] Furthermore, in this embodiment, as described above, each of the input transformer modules 3 and 103 (a pair of input transformer modules) houses a transformer 31 that transforms the power input from outside the device, and the shape of the busbars connected to the transformer 31 is standardized in the input transformer modules 3 and 103. This makes it possible to suppress an increase in the number of busbar types even when the input transformer modules 3 and 103 are arranged so that their backs face each other.

[0109] Furthermore, in this embodiment, as described above, the mounting positions of the inter-module busbars 34a, 34b, 34c, 134a, 134b, and 134c relative to the busbars housed inside each of the power input modules 2 and 102 (a pair of power input modules) are configured such that, when viewed from the front side of each of the power input modules 2 and 102, their left and right orientations are reversed. With this configuration, unlike when the backs of different modules are arranged facing each other, even if the orientation in which the input transformer modules 3 and 103 are arranged relative to each of the power input modules 2 and 102 is reversed when viewed from the front side of each of the power input modules 2 and 102, by arranging the power input modules 2 and 102 so that their backs face each other, it is possible to configure modules with a left-right inverted busbar arrangement without increasing the number of busbar types by changing the mounting positions of the inter-module busbars 34a, 34b, 34c, 134a, 134b, and 134c.

[0110] Furthermore, in this embodiment, as described above, each of the input-side bypass modules 4 and 104 (a pair of input-side bypass modules) houses a circuit breaker 42 for interrupting the AC power supplied to the bypass wiring 9, and a circuit breaker 43 for interrupting the AC power supplied to the power conversion unit 10. In the input-side bypass modules 4 and 104, the shape of the busbars connected to the circuit breaker 42 and the busbars connected to the circuit breaker 43 are standardized. With this configuration, since a common busbar is used for the busbars connected to the circuit breaker 42 and the busbars connected to each of the circuit breakers 43 in the input-side bypass modules 4 and 104, an increase in the number of busbar types can be suppressed even when the input-side bypass modules 4 and 104 are arranged so that their backs face each other.

[0111] Furthermore, in this embodiment, as described above, each of the battery connection modules 5 and 105 (a pair of battery connection modules) is provided with a bus duct 51 for electrically connecting the external battery 203 to the power conversion unit 10. The shape of the busbars connected to the bus duct 51 is standardized in the battery connection modules 5 and 105. This makes it possible to suppress an increase in the number of busbar types even when the battery connection modules 5 and 105 are arranged so that their backs face each other.

[0112] Furthermore, in this embodiment, as described above, the shape of the busbar housed inside each of the multiple pairs of output modules O is standardized for modules that are arranged so that their backs face each other. As a result, a common busbar is used for each of the multiple pairs of output modules O of different types, so even when multiple pairs of output modules O of different types are arranged so that their backs face each other, the number of busbar types can be suppressed.

[0113] Furthermore, in this embodiment, as described above, the output bypass modules 7 and 107 (a pair of output bypass modules) and the external output modules 8 and 108 (a pair of external output modules) are arranged so that their rear faces face each other. In this configuration, the common busbars are arranged internally such that, when viewed from the front of each module, the left and right sides are reversed. This differs from the case where different modules are arranged so that their rear faces face each other. By arranging a pair of identical output modules O so that their rear faces face each other, even if the arrangement of adjacent modules in the output bypass modules 7 and 107 and the external output modules 8 and 108 is reversed when viewed from the front of each module so that their rear faces face each other, it is possible to configure modules with a left-right reversed busbar arrangement without increasing the number of busbar types. As a result, it is possible to configure modules with a left-right reversed busbar arrangement while suppressing an increase in the number of busbar types, and to arrange a pair of identical output modules O so that their rear faces face each other.

[0114] Furthermore, in this embodiment, as described above, each of the output bypass modules 7 and 107 (a pair of output bypass modules) houses a circuit breaker 72 for interrupting AC power supplied from the bypass wiring 9 and a circuit breaker 73 for interrupting AC power supplied from the power conversion unit 10. In the output bypass modules 7 and 107, the shapes of the busbars connected to the circuit breaker 72 and the busbars connected to the circuit breaker 73 are standardized. As a result, a common busbar is used for the busbars connected to the circuit breaker 72 and the busbars connected to the circuit breaker 73 in a pair of output bypass modules, so even when the output bypass modules 7 and 107 are arranged so that their backs face each other, the increase in the number of busbar types can be suppressed.

[0115] Furthermore, in this embodiment, as described above, each of the external output modules 8 and 108 (a pair of external output modules) houses internal circuit breakers 83 and 84 for interrupting the AC power supplied to the load 202 outside the device, and the shape of the busbars connected to the circuit breakers 83 and 84 is standardized in the external output modules 8 and 108. This makes it possible to suppress an increase in the number of busbar types even when the external output modules 8 and 108 are arranged so that their backs face each other.

[0116] [Differentiation] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than the description of the embodiments above, and further includes all modifications (modifications) within the meaning and scope equivalent to the claims.

[0117] For example, the above embodiment shows an example in which the shape of the busbars housed inside each of the pair of input modules I and each of the pair of output modules O is common to modules that are arranged so that their rear faces face each other, but the present invention is not limited to this. For example, only the shape of the busbars housed inside each of the pair of input modules may be common to modules that are arranged so that their rear faces face each other. Also, only the shape of the busbars housed inside each of the pair of output modules may be common to modules that are arranged so that their rear faces face each other.

[0118] Furthermore, in the above embodiment, the uninterruptible power supply 100 was shown to include an input module I comprising a power input module 2, a power input module 102, an input transformer module 3, an input transformer module 103, an input bypass module 4, an input bypass module 104, a battery connection module 5, and a battery connection module 105. However, the present invention is not limited to this. In the present invention, the uninterruptible power supply may be configured by combining two or more of the power input modules, input transformer modules, input bypass modules, and battery connection modules into a single module.

[0119] Furthermore, in the above embodiment, the input transformer modules 3 and 103 (a pair of input transformer modules), the input bypass modules 4 and 104 (a pair of input bypass modules), and the battery connection modules 5 and 105 (a pair of battery connection modules) are shown as modules arranged with their rear faces facing each other, in which the common busbars are arranged inside such that, when viewed from the front of each module, the left and right sides are swapped. However, the present invention is not limited to this. In the present invention, any two or fewer of the pair of input transformer modules, the pair of input bypass modules, and the pair of battery connection modules may be arranged with their rear faces facing each other, in which the common busbars are arranged inside such that, when viewed from the front of each module, the left and right sides are swapped.

[0120] Furthermore, although the above embodiment shows an example in which the uninterruptible power supply 100 includes a power input module 2 and a power input module 102, the present invention is not limited thereto. In the present invention, the uninterruptible power supply may include a common power input module for a pair of input transformer modules. That is, the uninterruptible power supply may include only one power input module.

[0121] Furthermore, in the above embodiment, an example was shown in which the shape of the busbars housed inside each of the power input modules 2 and 102 (a pair of power input modules), the input transformer modules 3 and 103 (a pair of input transformer modules), and the battery connection modules 5 and 105 (a pair of battery connection modules) is common to modules that are arranged so that their rear surfaces face each other. However, the present invention is not limited to this. In the present invention, only the busbars housed inside each of the pair of power input modules, the pair of input transformer modules, and the pair of battery connection modules may be common to modules that are arranged so that their rear surfaces face each other.

[0122] Furthermore, the above embodiment shows an example in which the shape of the busbars housed inside each of the output bypass modules 7 and 107 (a pair of output bypass modules) and inside each of the external output modules 8 and 108 (a pair of external output modules) is common to modules that are arranged so that their rear surfaces face each other, but the present invention is not limited to this. In the present invention, only the busbars housed inside either each of the pair of output bypass modules or each of the pair of external output modules may be common to modules that are arranged so that their rear surfaces face each other.

[0123] Furthermore, in the above embodiment, an example was shown in which the mounting positions of the inter-module busbars 134a, 134b, and 134c with respect to the busbars housed inside each of the power input modules 2 and 102 (a pair of power input modules) are swapped left and right when viewed from the front side of each of the power input modules 2 and 102, but the present invention is not limited to this. In the present invention, the mounting positions of the inter-module busbars with respect to the busbars housed inside each of the pair of power input modules may be configured to be the same when viewed from the front side of each of the pair of power input modules.

[0124] Furthermore, in the above embodiment, an example was shown in which the shapes of the busbars connected to the circuit breaker 42 (first bypass circuit breaker) and the busbars connected to the circuit breaker 43 (second input circuit breaker) are common to the input bypass modules 4 and 104 (a pair of input bypass modules), but the present invention is not limited to this. In the present invention, only the shape of the busbars connected to the first bypass circuit breaker may be common to the pair of input bypass modules. Alternatively, only the shape of the busbars connected to the second input circuit breaker may be common to the pair of input bypass modules.

[0125] Furthermore, in the above embodiment, the uninterruptible power supply 100 was shown to include an output-side bypass module 7, an output-side bypass module 107, an external output module 8, and an external output module 108 as output-side modules O, but the present invention is not limited thereto. In the present invention, the uninterruptible power supply may be configured with the output-side bypass module and the external output module as a single module.

[0126] Furthermore, although the above embodiment shows an example in which the uninterruptible power supply 100 includes an external output module 8 and an external output module 108, the present invention is not limited thereto. In the present invention, the uninterruptible power supply may include a common external output module for a pair of output-side bypass modules. That is, the uninterruptible power supply may include only one external output module.

[0127] Furthermore, in the above embodiment, an example was shown in which the output bypass modules 7 and 107 (a pair of output bypass modules) and the external output modules 8 and 108 (a pair of external output modules) are arranged so that their rear surfaces face each other, and the common busbars are arranged inside such that, when viewed from the front of each module, the left and right sides are swapped. However, the present invention is not limited to this. In the present invention, only one of the pair of output bypass modules and the pair of external output modules may be arranged so that their rear surfaces face each other, and the common busbars are arranged inside such that, when viewed from the front of each module, the left and right sides are swapped.

[0128] Furthermore, in the above embodiment, an example was shown in which the shapes of the busbars connected to the circuit breaker 72 (second bypass circuit breaker) and the busbars connected to the circuit breaker 73 (first output circuit breaker) are common to the output bypass modules 7 and 107 (a pair of output bypass modules), but the present invention is not limited to this. In the present invention, only the shape of the busbars connected to the second bypass circuit breaker may be common to the pair of output bypass modules. In addition, only the shape of the busbars connected to each of the first output circuit breakers may be common to the pair of output bypass modules. [Explanation of Symbols]

[0129] 2. 102 Power Input Modules 3. 103 Input Transformer Module 4. 104 Input Bypass Module 5. 105 Battery Connection Module 7. 107 Output Bypass Module 8. 108 External Output Module 9 Bypass wiring 10 Power conversion unit 11, 12, 111, 112 Uninterruptible Power Supply Modules 21, 22 Circuit breakers (first input side circuit breakers) 23a-23c, 24a-24c, 25a-25c busbar, 26a-26c, 27a-27c busbar 31 Transformers 33a~33c Busbar 34a~34c Inter-module busbars 42 Circuit breaker (first bypass circuit breaker) 43 Circuit breaker (second input side circuit breaker) 44a-44d, 45a-45d, 46a-46d, 47a-47d Busbar 51 Bus duct (battery connection part) 52a, 52b busbars 72 Circuit breaker (second bypass circuit breaker) 73 Circuit breaker (first output side circuit breaker) 74a-74d, 75a-75d, 76a-76d Busbar 83, 84 Circuit breakers (second output circuit breakers) 85a-85d, 86a-86d, 87a-87d, 88a-88d Busbar 100 Uninterruptible power supply 123a~123c, 124a~124c, 125a~125c, 126a~126c, 127a~127c Busbar 133a~133c Busbar 134a~134c Intermodal busbars 144a~144d, 145a~145d, 146a~146d, 147a~147c Busbar 152a, 152b busbar 174a~174d, 175a~175d, 176a~176d Busbar 185a~185d, 186a~186d, 187a~187d, 188a~188d Busbar 201 AC power supply 202 load 203 Battery I Input module O Output module

Claims

1. A pair of uninterruptible power supply modules, each including a power conversion unit that converts AC power input from an external AC power source, AC power is input from the AC power source outside the device, and a pair of input modules are arranged adjacent to the pair of uninterruptible power supply modules, with their rear surfaces facing each other. The power conversion unit outputs the converted power to an external load, and comprises a pair of output modules arranged adjacent to the pair of uninterruptible power supply modules, and arranged so that their rear surfaces face each other in the opposing direction of the pair of input modules. A busbar is housed inside each of the pair of input modules and inside each of the pair of output modules. An uninterruptible power supply in which the shape of at least one of the busbars housed inside each of the pair of input modules and the busbars housed inside each of the pair of output modules is common to modules that are arranged so that their rear faces face each other.

2. The uninterruptible power supply according to claim 1, wherein the shape of the busbar housed inside each of the pair of input modules and inside each of the pair of output modules is common to modules that are arranged so that their rear faces face each other.

3. The pair of input modules includes multiple sets of the pair of input modules of different types arranged adjacent to each other. The uninterruptible power supply according to claim 2, wherein the shape of the busbar housed inside each of the plurality of pairs of input-side modules is common to modules that are arranged so that their rear surfaces face each other.

4. The plurality of pairs of input modules include a pair of input transformer modules that transform the power input from the AC power source outside the device, a pair of input bypass modules to which bypass wiring is attached that connects the pair of input modules and the pair of output modules without going through the pair of uninterruptible power supply modules, and a pair of battery connection modules that are connected to a battery outside the device. The uninterruptible power supply according to claim 3, wherein at least one of the pair of input transformer modules, the pair of input bypass modules, and the pair of battery connection modules is arranged such that, when viewed from the front of each module, the common busbars are arranged inside such that the left and right sides are swapped.

5. The plurality of pairs of input modules further include a pair of power input modules to which AC power supplied from the AC power source outside the device is input, Each of the pair of power input modules is equipped with a first input-side circuit breaker for interrupting AC power supplied from the AC power source outside the device. The uninterruptible power supply according to claim 4, wherein the first input circuit breaker is electrically connected to the busbar that is arranged in the left-right direction adjacent to the pair of input modules and the pair of uninterruptible power supply modules inside each of the pair of power input modules.

6. Each of the pair of input transformer modules contains a transformer that transforms the power input from outside the device. The uninterruptible power supply according to claim 5, wherein the shape of the busbars connected to the transformer is standardized between the pair of input transformer modules.

7. The pair of input transformer modules further comprises inter-module busbars connecting the busbars housed inside each of the pair of input transformer modules and the busbars housed inside each of the pair of power input modules, The uninterruptible power supply according to claim 6, wherein the mounting positions of the intermodule busbars with respect to the busbars housed inside each of the pair of power input modules are configured such that, when viewed from the front side of each of the pair of power input modules, their left and right sides are swapped relative to each other.

8. Each of the pair of input-side bypass modules houses a first bypass circuit breaker for interrupting the AC power supplied to the bypass wiring, and a second input-side circuit breaker for interrupting the AC power supplied to the power conversion unit. The uninterruptible power supply according to claim 5, wherein the shape of at least one of the busbars connected to the first bypass circuit breaker and the busbar connected to the second input circuit breaker is common to the pair of input-side bypass modules.

9. Each of the pair of battery connection modules is provided with a battery connection section for electrically connecting an external battery to the power conversion unit. The uninterruptible power supply according to claim 5, wherein the shape of the busbar connected to the battery connection portion is standardized between the pair of battery connection modules.

10. The pair of output modules includes multiple sets of the pair of output modules of different types arranged adjacent to each other. The uninterruptible power supply according to claim 2, wherein the shape of the busbar housed inside each of the plurality of pairs of output modules is common to modules that are arranged so that their rear faces face each other.

11. The plurality of pairs of output modules include a pair of output bypass modules to which bypass wiring is attached that connects the pair of input modules and the pair of output modules without going through the pair of uninterruptible power supply modules, and a pair of external output modules that supply AC power to the load outside the device. The uninterruptible power supply according to claim 10, wherein at least one of the pair of output bypass modules and the pair of external output modules has a common busbar arranged inside such that, when viewed from the front of each module, the left and right sides are swapped.

12. Each of the pair of output-side bypass modules houses a second bypass circuit breaker for interrupting AC power supplied from the bypass wiring, and a first output-side circuit breaker for interrupting AC power supplied from the power conversion unit. The uninterruptible power supply according to claim 11, wherein the shape of at least one of the busbars connected to the second bypass circuit breaker and the busbar connected to the first output circuit breaker is common to the pair of output bypass modules.

13. Each of the pair of external output modules contains a second output circuit breaker for interrupting the AC power supplied to the load outside the device. The uninterruptible power supply according to claim 12, wherein the shape of the busbar connected to the second output circuit breaker is standardized between the pair of external output modules.

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