Electrical device and power system

Abstract

To provide an electric device capable of bending an electric conduit backward without deteriorating earthquake resistance.SOLUTION: An electrical device 1A includes an installation base 100A, a pair of left and right legs 200A, and an electrical device 300A. The electrical device 1A includes a wire inlet provided in a bottom plate 301, and connectors C1 to C3 attached to the wire inlet and to which electrical conduits PF1 to PF3 are connected. The installation base 100A has a front surface and a rear surface. The rear surface includes a pair of left and right rear end surfaces and a concave rear surface that is concave toward the front surface between the pair of left and right rear end surfaces. The concave rear surfaces form openings that allow the electrical conduits to be pulled out to the height of the installation surface.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electrical equipment device and a power supply system with a mounting base. [Background technology]

[0002] General electrical equipment has an inlet for connecting a synthetic resin flexible electrical conduit (hereinafter referred to as electrical conduit). The inlet is provided on the bottom plate (bottom surface) of the electrical equipment so that the electrical conduit pulled out from the electrical equipment runs along the ground (installation surface).

[0003] For this reason, in the case of an electrical equipment installation in which electrical equipment is placed on an installation foundation, the problem occurs that the electrical conduit cannot be bent because it comes into contact with the upper surface of the installation foundation, and this problem leads to problems such as poor workability. A method for solving the above problems is to raise the position of the wire inlet, and specific examples (first conventional example and second conventional example) are shown in Figures 7 and 8.

[0004] As shown in Fig. 7, the electric device 1B of the first conventional example includes a rectangular parallelepiped installation base 100B, a pair of left and right legs 200B fixed to the upper surface of the installation base 100B, and an electric device 300B supported by the legs 200B. The electric device 300B has three wire inlets provided on the bottom plate, to which three electric conduits PF1 to PF3 are connected via connectors. The three electric conduits PF1 to PF3 are drawn out to the rear of the upper surface of the installation base 100B.

[0005] In the electric device 1B, the height dimension of the leg 200B is increased to raise the position of the wire inlet. This makes it possible to bend the electric conduits PF1 to PF3 connected to the wire inlet. However, in the electric device 1B, the height of the electric device 300B is increased, which causes a problem that the electric device 1B becomes large. In addition, in the electric device 1B, the center of gravity of the electric device 300B is increased, which causes a problem that the earthquake resistance performance is reduced.

[0006] As shown in Fig. 8, the electric device 1C of the second conventional example includes a rectangular parallelepiped installation base 100C, a pair of left and right legs 200C fixed to the upper surface of the installation base 100C, and an electric device 300C supported by the legs 200C. The bottom plate of the electric device 300C is formed in a concave shape with the center in the left-right direction concave upward, and three wire inlets are provided in the concave part. Conduits PF1 to PF3 connected to the three wire inlets via connectors are drawn out to the rear of the upper surface of the installation base 100C.

[0007] In the electric device 1C, the bottom plate of the electric device 300C is recessed to raise the position of the wire inlet. This allows the wire pipes PF1 to PF3 connected to the wire inlet to be bent. However, the electric device 1C has a problem that the internal layout of the electric device 300C is poor. In addition, in the electric device 1C, the area of ​​the bottom plate of the electric device 300C excluding the recessed portion (the area of ​​the left and right ends of the bottom plate) is narrow, so the width in the left-right direction of the leg 200C connected to this area is narrow. As a result, the electric device 1C has a problem that the leg 200C becomes thin and the earthquake resistance performance is reduced.

[0008] Incidentally, a conventional example of an installation foundation is known that is divided to improve workability (see Patent Document 1). The installation foundation described in Patent Document 1 is a first block and a second block connected by plates and bolts. The installation foundation described in Patent Document 1 can be separated into the first block and the second block by removing the plates and bolts, so that it can be easily carried by hand, improving workability. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Utility Model Registration No. 3153763 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide an electrical equipment device and a power supply system in which a conduit can be bent backward without reducing earthquake resistance. [Means for solving the problem]

[0011] In order to solve the above problems, an electrical device according to the present invention comprises: An installation base having a top surface and a bottom surface, the bottom surface being installed on an installation surface; A pair of left and right legs fixed to the upper surface of the installation base; an electric device having a bottom plate and supported by the pair of left and right legs such that the bottom plate faces the upper surface of the installation base while being spaced apart from the upper surface; An electrical device comprising: The electrical device includes: At least one wire inlet provided on the bottom plate; At least one connector attached to the at least one inlet and to which a conduit is connected; The mounting base has a front surface and a rear surface, The rear surface is A pair of left and right rear end surfaces; a concave rear surface recessed toward the front surface between the pair of left and right rear end surfaces, The concave rear surface defines an opening that allows the conduit to be extended to the height of the installation surface.

[0012] In this configuration, the concave rear surface of the installation base forms an opening that allows the electric conduit to be pulled out to the height of the installation surface, so that the electric conduit can be bent backward without increasing the height dimension of the legs or making the bottom plate of the electric equipment concave. In other words, with this configuration, the electric conduit can be bent backward without compromising the earthquake resistance performance.

[0013] In the electrical equipment, It is preferable that the concave rear surface includes chamfered surfaces at connection portions with the pair of left and right rear end surfaces.

[0014] According to this configuration, after the conduit is bent backward, it can be easily bent further to the left and / or right, improving the ease of installation of the electrical equipment.

[0015] In the electrical equipment, The pair of left and right legs are fixed to the bottom plate of the electrical device, The at least one wire inlet may be configured to be provided between the pair of left and right legs and forward of the center of the electrical device in the front-rear direction.

[0016] In the electrical equipment, The at least one inlet is a plurality of inlets arranged in a row in the left-right direction, The at least one connector is a plurality of connectors, one of which is provided for each of the plurality of wire inlets; The opening may be configured to allow a plurality of the conduits to extend to the height of the installation surface.

[0017] In the electrical equipment, The at least one connector may be a bent connector bent toward the rear of the installation base.

[0018] In the electrical equipment, The height dimension of the pair of left and right legs is smaller than the height dimension of the installation base, A lower end position of the at least one connector may be lower than upper ends of the pair of left and right legs.

[0019] In order to solve the above problems, the power supply system according to the present invention comprises: A first electric device which is any one of the electric devices described above; A second electrical device; a power supply unit connected to an AC source; A power supply system comprising: The first electrical device is The at least one inlet includes a first inlet, a second inlet, and a third inlet, As the at least one connector, a first connector having an opening at one end attached to the first inlet and having an opening at the other end to which a first conduit is connected; a second connector having an opening at one end attached to the second inlet and an opening at the other end to which a second conduit is connected; a third connector having an opening at one end attached to the third inlet and an opening at the other end to which a third conduit is connected; the first conduit is connected to the second electrical device; The second conduit and the third conduit are connected to the power supply unit. It is characterized by: Effect of the Invention

[0020] According to the present invention, it is possible to provide an electric device and a power supply system in which a conduit can be bent backward without reducing earthquake resistance. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a rear perspective view of the electrical device according to the present invention; [Diagram 2] 1A and 1B are views of an electrical device according to the present invention, in which (A) is a front view and (B) is a right side view. [Diagram 3] FIG. 2 is a front perspective view of the installation base according to the present invention. [Figure 4] FIG. 1 is a diagram showing a power supply system according to the present invention. [Diagram 5] 1A is a bottom view of an electrical equipment device according to the present invention, where (A) is a view including the installation base, (B) is a view not including the installation base, and (C) is a view showing the relationship between the opening of the installation base and the wire inlet. [Figure 6] FIG. 11 is a front perspective view of an installation base according to a modified example. [Figure 7] FIG. 1 is a rear perspective view of an electrical device according to a first conventional example. [Figure 8] FIG. 11 is a rear perspective view of an electric device according to a second conventional example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an electrical device and a power supply system according to the present invention will be described with reference to the accompanying drawings.

[0023] An electric device 1A according to one embodiment of the present invention is shown in Figures 1 and 2. The electric device 1A includes an installation base 100A, a pair of left and right legs 200A, and an electric device 300A.

[0024] In the electric device 1A, an installation base 100A is installed on an installation surface (the ground in this embodiment), a pair of left and right legs 200A are fixed to an upper surface 101 of the installation base 100A, and an electric device 300A is supported by the pair of left and right legs 200A. Connectors C1 to C3 are provided on a bottom plate 301 of the electric device 300A, and electric conduits PF1 to PF3 are connected to the connectors C1 to C3. Note that in FIG. 1, in order to show the connection portions between the connectors C1 to C3 and the electric conduits PF1 to PF3, the back plate of the electric device 300A and the electric circuit components on the back plate side are not shown.

[0025] FIG. 3 shows a front perspective view of the installation base 100A. The installation base 100A is composed of a first installation base 100A1 and a second installation base 100A2. The first installation base 100A1 and the second installation base 100A2 are connected using plates and bolts (not shown) in the same manner as the installation base described in Patent Document 1. The first installation base 100A1 and the second installation base 100A2 can be separated by removing the plates and bolts. The installation base 100A is manufactured using concrete as a material, but the installation base 100A can also be manufactured using materials other than concrete.

[0026] The installation base 100A has an upper surface 101, a bottom surface 102, a left side surface 103, a right side surface 104, a front surface 105, and rear surfaces 106-111. The installation base 100A has a vertical dimension (height dimension) of 100 [mm], a horizontal dimension of up to 500 [mm], and a front-rear dimension of up to 420 [mm]. These dimensions are merely examples and can be changed as appropriate. The same applies to the dimensions described below.

[0027] The upper surface 101 is formed with holes H1 to H4 for fixing the leg 200A. The dimension between the holes H1 and H2 and between the holes H3 and H4 is 160 [mm]. The dimension between the holes H1 and H3 and between the holes H2 and H4 is 266 [mm]. Nuts are inserted into the holes H1 to H4, and the lower end of the leg 200A is fixed to the upper surface 101 of the installation base 100A by the nuts and bolts (not shown). The method of fixing the leg 200A to the installation base 100A is not limited to this, and any known method (for example, the fixing method described in Patent Document 1) can be used.

[0028] The bottom surface 102 is a surface that contacts the installation surface, and has the same shape as the top surface 101. The left side surface 103 is a rectangular surface, with a vertical dimension of 100 [mm] and a front-to-rear dimension of 420 [mm]. The right side surface 104 is the same shape as the left side surface 103. The front surface 105 is a rectangular surface, with a vertical dimension of 100 [mm] and a left-to-right dimension of 500 [mm] (250 [mm] on the first installation base 100A1 side, and 250 [mm] on the second installation base 100A2 side).

[0029] The rear surfaces 106-111 include a pair of left and right rear end surfaces 106, and concave rear surfaces 107-111 recessed toward the front surface 105 between the pair of left and right rear end surfaces 106. The rear end surface 106 is the surface farthest from the front surface 105 among the rear surfaces 106-111, and is a surface parallel to the front surface 105. The left and right rear end surfaces 106 have the same shape, with a vertical dimension of 100 [mm] and a horizontal dimension of 117 [mm]. The left and right rear end surfaces 106 do not necessarily have to have the same shape, and may have different shapes.

[0030] The concave rear surfaces 107-111 are surfaces that form an opening 112 that allows the conduits PF1-PF3 to be pulled out to the height of the installation surface. The concave rear surfaces 107-111 include a first surface 107, a second surface 108, a third surface 109, and chamfered surfaces 110 and 111.

[0031] The first surface 107 is a surface parallel to the front surface 105, is spaced 190 mm from the front surface 105, and is a rectangular surface with a vertical dimension of 100 mm and a horizontal dimension of 170 mm. The second surface 108 is connected to the left end of the first surface 107 and is a surface parallel to the left side surface 103. The third surface 109 is connected to the right end of the first surface 107 and is a surface parallel to the right side surface 104. The second surface 108 and the third surface 109 have the same shape and are rectangular surfaces with a vertical dimension of 100 mm and a front-rear dimension of 150 mm.

[0032] The chamfered surface 110 is a surface formed by chamfering the connection portion between the left rear end surface 106 and the second surface 108. The chamfered surface 110 is a surface that has been chamfered to a size of 80 [mm] in the left-right direction and 80 [mm] in the front-rear direction. Similarly, the chamfered surface 111 is a surface that has been chamfered to a size of 80 [mm] in the left-right direction and 80 [mm] in the front-rear direction. The concave rear surfaces 107 to 111 include the chamfered surfaces 110 and 111, so that the opening 112 has a larger left-right dimension as it approaches the rear end surface 106. The chamfered surfaces 110 and 111 may be chamfered to a size other than the C-chamfer (for example, an R-chamfer).

[0033] The left leg 200A has a lower end fixed to the upper surface 101 of the first installation base 100A1 and an upper end fixed to the left end of the bottom plate 301 of the electric device 300A. The right leg 200A has a lower end fixed to the upper surface 101 of the second installation base 100A2 and an upper end fixed to the right end of the bottom plate 301 of the electric device 300A. The leg 200A is manufactured from a metal material such as stainless steel, but can also be manufactured from a material other than metal.

[0034] The left leg 200A and the right leg 200A have the same shape, and the vertical dimension is 80 [mm]. In this embodiment, since the bottom plate 301 of the electric device 300A is not concave as shown in FIG. 8, the regions of the left and right ends of the bottom plate 301 (regions to which the upper ends of the legs 200A are fixed) can be enlarged. As a result, in this embodiment, the horizontal dimension of the legs 200A (thickness of the legs 200A) can be enlarged, and the earthquake resistance performance can be improved. Note that the pair of left and right legs 200A do not necessarily have to have the same shape on the left and right. In addition, the pair of left and right legs 200A may include a connecting member that connects the left leg 200A and the right leg 200A.

[0035] The electric device 300A is a main body of a V2H (Vehicle to Home) device that supplies battery power of an electric vehicle to a load in a house. As shown in Fig. 4, the electric device 300A is connected to an operation unit 400A of the V2H device and is also connected to a power supply unit 500A in the house. That is, the electric device 1A (corresponding to the "first electric device" of the present invention) including the electric device 300A, the operation unit 400A of the V2H device (corresponding to the "second electric device" of the present invention), and the power supply unit 500A in the house constitute a power supply system according to one embodiment of the present invention.

[0036] The operation unit 400A transmits DC power and control signals between the operation unit 400A and the electric device 300A. The operation unit 400A includes a support 401 installed on an installation surface, an operation main body 402 provided with an operation screen, an electric circuit component 403 housed in the internal space of the operation main body 402, and a cable-attached charge / discharge connector 404. The operation unit 400A performs a charging operation to supply DC power supplied from the electric device 300A to a battery of the electric vehicle connected to the charge / discharge connector 404, and a discharging operation to supply DC power supplied from the battery of the electric vehicle to the electric device 300A. A user can start / stop the charging operation and start / stop the discharging operation from the operation screen of the operation main body 402.

[0037] The power supply unit 500A transmits AC power and control signals between the power supply unit 500A and the electric device 300A. The power supply unit 500A includes a switching unit 501 connected to a commercial power system (not shown), which corresponds to the "AC source" of the present invention, a power conditioner device 502, and an auxiliary device 503.

[0038] The switching unit 501 includes, for example, a distribution board and an automatic switching switch, and switches the connection relationship (relationship of power transfer) between the power system (AC source), the electric device 300A, and the power conditioner device 502. The power conditioner device 502 includes, for example, a power conditioner device for a solar power generation device and / or a power conditioner device for a stationary storage battery. The power conditioner device for a solar power generation device performs power conversion operation (for example, DC / DC conversion operation) of generated power output from a solar power generation device (not shown) and controls it. The power conditioner device for a stationary storage battery performs charging and discharging operation of a stationary storage battery (not shown) and controls it. The auxiliary device 503 includes, for example, a communication device such as an indoor remote control configured to be able to communicate with the operation unit 400A and the power conditioner device 502, a router for wireless LAN, etc.

[0039] Electric device 300A includes housing 310 having a bottom plate 301, and electric circuit components 311 housed in the internal space of housing 310. Electric circuit components 311 include, for example, an AC / DC conversion circuit including a switching element, a DC / DC conversion circuit including a switching element, and a control circuit that controls the AC / DC conversion circuit and the DC / DC conversion circuit.

[0040] One end opening sides of connectors C1 to C3 are attached to bottom plate 301 of housing 310, and the other end opening sides of connectors C1 to C3 are connected to conduits PF1 to PF3. The conduit PF1 houses a first line L1, the conduit PF2 houses a second line L2, and the conduit PF3 houses a third line L3.

[0041] The first line L1 includes a DC power line and a control line for V2H. The first line L1 connects the electric circuit component 311 of the electric device 300A and the electric circuit component 403 of the operation unit 400A, and transmits DC power between the electric device 300A and the operation unit 400A. The control line of the first line L1 transmits control signals and various information required for control between the electric device 300A and the operation unit 400A.

[0042] The second line L2 includes a plurality of control lines other than those for V2H. The second line L2 connects the electric circuit component 311 of the electric device 300A to the switching unit 501, the power conditioner device 502, and the auxiliary device 503 of the power supply unit 500A, and transmits control signals and various information required for control between the electric device 300A and the power supply unit 500A.

[0043] The third line L3 includes an AC power line. The third line L3 connects the electric circuit components 311 of the electric device 300A, the power supply unit 500A, and the switching unit 501, and transmits AC power between the electric device 300A and the power supply unit 500A. For example, AC power supplied from the electric device 300A to the power supply unit 500A is supplied from the switching unit 501 to a load (e.g., an electrical appliance) in the house. In addition, AC power supplied from the power supply unit 500A to the electric device 300A is converted to DC power by the electric circuit components 311, and is supplied to the battery of the electric vehicle via the operation unit 400A.

[0044] As described above, in this embodiment, the conduit PF1 houses the first line L1, the conduit PF2 houses the second line L2, and the conduit PF3 houses the third line L3. This makes it possible to suppress noise interference between the lines L1 to L3. Also, in the electric device 300A, it is possible to avoid erroneous connection of the lines L1 to L3 to the electric circuit component 311 (for example, erroneous connection such as connecting a control line for V2H to a terminal of the electric circuit component 311 intended for connecting a control line other than for V2H).

[0045] In this embodiment, bent connectors are used as the connectors C1 to C3. The central axis of the bent connector is inclined with respect to the central axis of the one end opening side. In this embodiment, the connectors C1 to C3, which are inclined at 45 degrees, are attached with the other end opening side facing diagonally downward toward the rear of the electric device 300A. This makes it easier to pull out the electric conduits PF1 to PF3 toward the rear of the electric device 300A. In addition, compared to the case where a straight connector in which the central axis of the one end opening side and the central axis of the other end opening side are aligned is used as the connectors C1 to C3, the area of ​​the opening 112 of the installation base 100A can be made smaller.

[0046] 5(A), when the electric device 1A is viewed from the bottom side, at least the other end opening side of the connectors C1 to C3 needs to face the opening 112 of the installation base 100A. In other words, even if the parts of the connectors C1 to C3 other than the other end opening side face the upper surface 101 of the installation base 100A, as long as the other end opening side is exposed to the opening 112 when viewed from the bottom side, it is possible to bend the conduits PF1 to PF3 backward without contacting the upper surface 101 of the installation base 100A.

[0047] 5(B), the bottom plate 301 of the electric device 300A is provided with wire inlets 302-304 to which one-end opening sides of the connectors C1-C3 are attached. The wire inlets 302-304 are three circular through-holes formed in the bottom plate 301. The wire inlets 302-304 are provided in a row in the left-right direction between a pair of left and right leg parts 200A and forward of the center of the electric device 300A in the front-rear direction.

[0048] 5(C), when the electric device 1A is viewed from the bottom side, the rear regions of the wire inlets 302-304 face the opening 112 of the installation base 100A, while the front regions face the upper surface 101 of the installation base 100A. When straight connectors are used as the connectors C1-C3, it is preferable that the entire regions of the wire inlets 302-304 face the opening 112, but in this embodiment, as described above, it is sufficient that only the rear regions face (are exposed to) the opening 112. Therefore, in this embodiment, even if the region of the opening 112 is made small, the conduits PF1-PF3 can be bent backward.

[0049] As a result, in the electric device 1A, the concave rear surfaces 107-111 of the installation base 100A form the openings 112 that allow the electric conduits PF1-PF3 to be pulled out to the height of the installation surface, so that the electric conduits PF1-PF3 can be bent backward without increasing the height dimension of the leg 200A or making the bottom plate 301 of the electric device 300A concave. That is, according to the electric device 1A, the electric conduits PF1-PF3 can be bent backward without increasing the size of the entire device, reducing the layout flexibility of the electric circuit components 311 of the electric device 300A, or reducing the earthquake resistance.

[0050] In addition, in the electric device 1A, the concave rear surfaces 107-111 of the installation base 100A include the chamfered surfaces 110, 111, so that the electric conduits PF1-PF3 can be easily bent further leftward and / or rightward after being bent backward. As a result, the workability is improved, and for example, the electric device 1A can be installed close to a wall surface. Furthermore, in the electric device 1A, bent connectors are used as the connectors C1-C3, so the area of ​​the opening 112 of the installation base 100A can be made small.

[0051] Although the embodiments of the electrical device and the power supply system according to the present invention have been described above, the present invention is not limited to the above-described embodiments.

[0052] [Variations] 6 shows an installation base 100A' according to a modified example. The installation base 100A' can be used in place of the installation base 100A in the electric device 1A according to the above embodiment. The installation base 100A' has the same configuration as the installation base 100A, except that it is not divided and the rear surface does not include the chamfered surfaces 110 and 111.

[0053] The rear surface of the installation base 100A' includes a pair of left and right rear end surfaces 106', and concave rear surfaces 107'-109' that are concave toward the front surface 105 between the pair of left and right rear end surfaces 106'. The rear end surface 106' is a surface parallel to the front surface 105, and has the same shape on the left and right sides. The concave rear surfaces 107'-109' include a first surface 107', a second surface 108', and a third surface 109', and are surfaces that form an opening 112' that allows the conduits PF1-PF3 to be pulled out to the height of the installation surface.

[0054] [Other variations] The installation base of the present invention has an upper surface and a bottom surface, the bottom surface of which is installed on an installation surface, and has a front surface and a rear surface, the rear surface including a pair of left and right rear end surfaces and a concave rear surface that is concave toward the front surface between the pair of left and right rear end surfaces, and the configuration of the concave rear surface can be modified as appropriate so long as it forms an opening that allows the electric conduit to be pulled out to the height of the installation surface.

[0055] For example, the installation base may be divided into three or more parts, the concave rear surface may be a curved surface, and the pair of left and right rear end surfaces may have different shapes.

[0056] The electrical equipment of the present invention has a bottom plate and is supported on a pair of left and right legs so that the bottom plate faces the upper surface of the installation base while being spaced apart, and the configuration can be modified as appropriate as long as it is equipped with at least one wire inlet provided on the bottom plate and at least one connector attached to the at least one wire inlet and to which an electrical conduit is connected.

[0057] For example, the electrical device of the present invention may be an integrated V2H device main body and an operation unit of the V2H device, or it may be something other than a V2H device (for example, a charging / discharging device that charges and discharges a stationary storage battery).

[0058] In the above embodiment, curved connectors are used as the connectors C1 to C3, but the connector of the present invention may include connectors other than curved connectors (for example, straight connectors).

[0059] In the above embodiment, flexible conduits made of synthetic resin are used as the conduits PF1 to PF3, but conduits other than flexible conduits made of synthetic resin may be used. [Explanation of symbols]

[0060] 1A Electrical Equipment 100A Installation Base 101 Top surface 102 Bottom 103 Left side 104 Right side 105 Front 106 Rear end surface 107 Page 1 108 2nd page 109 Page 3 110 Chamfered surface 111 Chamfered surface 112 Opening 200A legs 300A Electrical Equipment 301 Bottom plate 302~304 Entrance 310 Case 311 Electrical circuit parts 400A Operation Unit 401 Support section 402 Operation main body 403 Electrical circuit parts 404 Charge / Discharge Connector 500A Power Supply Unit 501 Switching Unit 502 Power conditioner device 503 Accessories

Claims

1. An installation base having a top surface and a bottom surface, the bottom surface being installed on an installation surface; A pair of left and right legs fixed to the upper surface of the installation base; an electric device having a bottom plate and supported by the pair of left and right legs such that the bottom plate faces the upper surface of the installation base while being spaced apart from the upper surface; An electrical device comprising: The electrical device includes: At least one wire inlet provided on the bottom plate; At least one connector attached to the at least one wire inlet and to which a conduit is connected; The mounting base has a front surface and a rear surface, The rear surface is A pair of left and right rear end surfaces; a concave rear surface recessed toward the front surface between the pair of left and right rear end surfaces, The concave rear surface defines an opening that allows the conduit to be extended to the level of the mounting surface.

1. An electrical device comprising:

2. The concave rear surface includes chamfered surfaces at connection portions with the pair of left and right rear end surfaces.

2. An electrical device according to claim 1.

3. The pair of left and right legs are fixed to the bottom plate of the electrical device, The at least one wire inlet is provided between the pair of left and right legs and forward of the center of the electrical device in the front-rear direction.

2. An electrical device according to claim 1.

4. The at least one inlet is a plurality of inlets arranged in a row in the left-right direction, The at least one connector is a plurality of connectors, one of which is provided for each of the plurality of wire inlets; The opening allows the plurality of electric conduits to be drawn out to the height of the installation surface.

2. An electrical device according to claim 1.

5. The at least one connector is a bent connector bent toward the rear of the installation base.

2. An electrical device according to claim 1.

6. The height dimension of the pair of left and right legs is smaller than the height dimension of the installation base, The lower end position of the at least one connector is lower than the upper end positions of the pair of left and right legs.

2. An electrical device according to claim 1.

7. A first electric device according to any one of claims 1 to 6; A second electrical device; a power supply unit connected to an AC source; A power supply system comprising: The first electrical device is The at least one inlet includes a first inlet, a second inlet, and a third inlet, The at least one connector: a first connector having an opening at one end attached to the first wire inlet and an opening at the other end to which a first conduit is connected; a second connector having an opening at one end attached to the second wire inlet and an opening at the other end to which a second electric conduit is connected; a third connector having an opening at one end attached to the third inlet and an opening at the other end to which a third conduit is connected; the first conduit is connected to the second electrical device; The second conduit and the third conduit are connected to the power supply unit. A power supply system comprising:

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