JP6519764B2 - Measurement unit and distribution board - Google Patents

Description

  Embodiments of the present invention relate to a measurement unit that measures power consumption, and a distribution board using the measurement unit.

  Conventionally, in a residential distribution board, a conductive bar electrically connected to the main breaker is disposed on one side of the main breaker, and a plurality of branches electrically connected to the conductive bar along the conductive bar Breakers are arranged in parallel.

  Among such distribution boards, there is one that can measure the power consumption of each load connected to each branch breaker and the power consumption of the entire house by the measurement unit.

  The measurement unit is often arranged on one side of the branch breaker on the opposite side to the main breaker, but takes up installation space in the distribution board, for example, the number of branch breakers is limited, or the distribution board It may be enlarged.

JP, 2013-183581, A JP 2014-93915 A

  The problem to be solved by the present invention is to provide a measurement unit which can be disposed by effectively utilizing the space in the distribution board, and a distribution board using the measurement unit.

  The measurement unit of the embodiment includes a first unit unit and a second unit unit. The first unit portion is attached to a mounting plate of the distribution board and connected to at least two conductive bars. The second unit portion is disposed on the back side of the first unit portion, and on the front surface side of the protrusion which protrudes from the end on the opposite side to the conductive bar side of the first unit portion It has a signal line connection part which connects the signal wire for acquiring the detection signal corresponding to the current which flows into a main breaker, and the measurement part which measures electric energy from a detection signal is provided.

  According to the present invention, it can be expected that the measurement unit can be disposed by effectively utilizing the space in the distribution board.

It is the front view which removed the front cover of the electricity distribution panel which shows 1st Embodiment. It is sectional drawing of a distribution board same as the above. It is a perspective view of the internal apparatus of a distribution board same as the above. It is a perspective view of the decomposition | disassembly state of the internal apparatus of a distribution board same as the above. It is a perspective view of the front side of the measurement unit of a distribution board same as the above. It is a perspective view of the back side of the measurement unit of a distribution board same as the above. It is a side view which shows the attachment and electrical connection of the branch breaker of a distribution board same as the above. It is a perspective view of a distribution board same as the above. It is a 2nd embodiment and is a side view showing attachment and electric connection of a distribution breaker's branch breaker.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 8.

  The electricity distribution panel 10 for houses is shown in FIG. The distribution board 10 has a housing 11 installed on the wall surface. As shown in FIGS. 1 to 4, a mounting plate 12 is attached in the housing 11, and the main breaker 13, a plurality of conductive bars 14, a plurality of branch breakers 15, and a plurality of connection units 16 are attached to the mounting plate 12. And the measurement unit 17 are respectively attached.

  The main breaker 13 is disposed on the left side of the mounting plate 12, the conductive bars 14 are disposed on the right of the main breaker 13, and a plurality of branch breakers 15 are arranged in the lateral direction (width direction) above and below the conductive bars 14. In the installation area of the lower branch breaker 15, the measurement unit 17 is disposed on the left side which is the main breaker 13 side. The measurement unit 17 is disposed substantially at the center of the distribution board 10 in the left-right direction.

  The housing 11 includes a base 20 mounted on a wall and a front cover 21 mounted on the front of the base 20. The base 20 has a back surface portion 22 and a peripheral wall portion 23, and a plurality of openings 24 for wiring are formed in the back surface portion 22. A window hole 25 is formed in the front cover 21 so as to face the front of each of the main breaker 13, the branch breaker 15 and the measurement unit 17.

  The mounting plate 12 has a mounting plate portion 12a for mounting the main breaker 13 and a mounting plate portion 12b for mounting the conductive bar 14, the branch breaker 15, the connection unit 16 and the measuring unit 17; these mounting plate portions 12a, 12b are linked. The mounting plate 12 is mounted apart from the back surface 22 of the base 20 by a plurality of bridges 27. A wiring space is formed between the mounting plate 12 and the back surface 22 of the base 20.

  In the mounting plate 12 (mounting plate portion 12b), the conductive bar 14 is disposed in the vertical central area of the mounting plate 12 along the left-right direction, and a plurality of branch breakers 15 are vertically A plurality of mounting portions 28 for mounting side by side in a direction are juxtaposed. Each mounting portion 28 is provided with a pair of upper and lower cut and raised pieces 29 cut and raised on the front side of the mounting plate 12, and a stopper projecting from the edge of the mounting plate 12 to the front side of the mounting plate 12 A unit 30 is provided.

  Further, the master breaker 13 is provided with an input terminal portion 33 on the primary side to which a power line for supplying commercial power is connected, and a secondary output terminal portion 34 for outputting the commercial power to the conductive bar 14 in the lower portion. It is provided. The commercial power source is a single-phase three-wire AC power source.

  In addition, three conductive bars 14 for a neutral electrode and a pair of voltage electrodes are used for the conductive bar 14 in order to supply a single-phase three-wire AC power supply. The three conductive bars 14 overlap at predetermined intervals in the front-rear direction as viewed from the front of the distribution board 10 and are arranged along the left-right direction of the distribution board 10. Both ends in the left-right direction of the conductive bars 14 are attached to the front surface of the mounting plate 12 by a support base 37 having an insulating property.

  In addition, a conductor 40 is used to electrically connect the output terminal 34 of the main breaker 13 and the conductive bar 14. The conductor 40 is a three metal plate or three electric wires. One end of each conductor 40 is electrically connected to each terminal of the output terminal portion 34 of the main breaker 13, and the other end of each conductor 40 is electrically connected to each conductive bar 14.

  A protective portion 41 is used to cover the conductor 40 and to isolate it from the measurement unit 17. The protection portion 41 has a lower frame portion 42 disposed on the lower side of the trunk breaker 13 and a side frame portion 43 disposed on the side of the trunk breaker 13 from the lower frame portion 42, and is formed in a substantially L shape. It is done. A housing space for housing the conductor 40 is formed in the protective portion 41 from the lower frame portion 42 to the side frame portion 43. Then, the conductor 40 is separated from the measurement unit 17 by the protection unit 41, and a wiring space is formed between the protection unit 41 and the measurement unit 17.

  Further, the plurality of branch breakers 15 are disposed on the upper and lower sides with the conductive bar 14 interposed therebetween, and are arranged in parallel along the left-right direction for each stage. The branch breakers 15 are attached to the attachment portions 28 of the attachment plate 12 in opposite directions to the upper and lower sides of the conductive bar 14 and are electrically connected to the conductive bar 14.

  The branch breaker 15 includes a case 46, a circuit breaker unit (not shown) disposed in the case 46, and a current detection unit 47.

  The case 46 is formed of an insulating synthetic resin so as to have a narrow lateral width and a longitudinally elongated shape when viewed from the front of the case 46. A breaker handle 48 for manually operating the circuit breaker unit is disposed on the front side of the case 46. A conductive bar connecting portion 49 electrically connected to the conductive bar 14 is provided on one end side in the longitudinal direction as viewed from the front side of the case 46, and an electric wire for supplying power to the load is provided on the other end side. The electric wire connection part 50 to connect is provided. The conductive bar connection 49 has three grooves into which the conductive bar 14 is inserted, and in two of the three grooves, terminals electrically connected to the conductive bar 14 are arranged, but the arrangement of the terminals is The load connected to the branch breaker 15 differs between the case of 100 V specification and the case of 200 V specification.

  At two upper and lower positions on the rear surface of the case 46, mounting structures 51 for mounting to the mounting portion 28 are provided. The mounting structure 51 is provided so as to protrude from the rear surface of the case 46 such that the substantially L-shaped mounting piece portions 52 face each other. The mounting piece portion 52 sandwiches the cut and raised piece portion 29 of the mounting portion 28 from both sides, and the branch breaker 15 is mounted on the mounting plate 12.

  At the other end of the case 46 where the wire connection portion 50 is provided, a locking portion 53 is provided for detachably locking the stopper portion 30 of the mounting plate 12 in a state where the branch breaker 15 is mounted on the mounting plate 12 It is done. The locking portion 53 is provided so as to be able to move forward and backward from the back surface of the case 46, and is urged in the projecting direction so as to lock the stopper portion 30, and the stopper 53 is biased against the stopper The branch breaker 15 can be removed from the mounting plate 12 by sliding in a direction to remove it from the portion 30.

  The circuit breaking unit is capable of opening and closing the connection circuit between the terminal of the conductive bar connection 49 and the terminal of the wire connection 50, and opens and closes the connection circuit according to the operation of the breaker handle 48. The connection circuit is automatically opened when an overcurrent exceeding the set value flows in the closed state of the connection circuit.

  The current detection unit 47 is configured of a CT (Current Transformer) provided with a core and a detection coil combined with the core. The conductor connecting the terminal of the conductive bar connecting portion 49 and the circuit breaking unit is inserted into the core, the lead wire 54 connected to the detection coil is drawn from the back of the branch breaker 15, and the connector 55 is attached to the tip of the lead wire 54 It is connected. When the load connected to the branch breaker 15 uses power and a load current flows in the conductor, a detection signal corresponding to the load current is induced in the detection coil, and this detection signal is output by the lead wire 54. As shown in FIG. 7, the length of the lead wire 54 is set so that the connector 55 can not be removed from the connection connector 60 in a state where the branch breaker 15 is attached to the mounting plate 12.

  Further, as shown in FIGS. 2 and 4, the connection units 16 are respectively disposed in the upper and lower stages along the installation areas of the upper and lower branch breakers 15.

  The connection unit 16 includes a connection substrate 58, and a connection case 59 that covers and holds the connection substrate 58 and is attached to the back surface of the mounting plate 12. A plurality of connection connectors 60 for connecting the connectors 55 of the lead wires 54 drawn from the respective branch breakers 15 are mounted on the upper side or the lower side of the connection substrate 58, and measurement is performed at the left end that becomes the measurement unit 17 side. An output connector 61 connected to the unit 17 is mounted. Each connection connector 60 and the output connector 61 are electrically connected by a wiring pattern formed on the connection substrate 58. The output connector 61 is formed wide, and in the upper connection unit 16, the longitudinal direction of the output connector 61 mounted on the connection substrate 58 is horizontally directed, and in the lower connection unit 16, the output connector 61 is mounted on the connection substrate 58. The longitudinal direction of the output connector 61 is vertically oriented.

  The connection connector 60 is disposed to face a hole provided on the upper surface of the connection case 59, and the output connector 61 protrudes from the back surface of the connection case 59.

  In the state where the connection unit 16 is attached to the mounting plate 12, the connection connectors 60 are respectively disposed at the upper and lower edges of the mounting plate 12 corresponding to the positions of the mounting portions 28. Then, the connectors 55 of the lead wires 54 of the branch breaker 15 are connected to the upper connection connectors 60 from the upper side and to the lower connection connectors 60 from the lower side.

  In addition, the breaker 15a of solar power generation utilization is arrange | positioned on the right side of the installation area | region of the lower side branch breaker 15. As shown in FIG.

  Further, as shown in FIGS. 1 to 6, the measurement unit 17 includes a first unit portion 64 and a second unit portion 65. The first unit portion 64 is attached to the front surface of the mounting plate 12 on the left side on the main breaker 13 side in the installation area of the lower branch breaker 15. The second unit portion 65 is attached to the back surface of the mounting plate 12 on the back surface side of the first unit portion 64.

  The first unit portion 64 includes a case 66 and a power supply portion 67 accommodated in the case 66.

  The case 66 is formed to have a height dimension substantially the same as that of the branch breaker 15 and a width dimension equal to or larger than two of the branch breaker 15 and, for example, about three.

  The upper surface of the case 66 is formed with three grooves 68 in which the conductive bars 14 are fitted. A terminal electrically connected to the conductive bar 14 is disposed in at least two of the three grooves 68 such that power of 100 V is supplied to the power supply 67. Note that terminals respectively connected to the three conductive bars 14 may be disposed in the three groove portions 68 of the case 66, or the voltage between any two conductive bars 14 may be measured.

  A mounting structure 69 mounted on one mounting portion 28 of the mounting plate 12 is provided on the back of the case 66 at one position in the center in the width direction. The mounting structure 69 is the same as the mounting structure 51 of the branch breaker 15, and two substantially vertical L-shaped mounting pieces 70 project from the back surface of the case 66 at the upper and lower two places of the case 66 respectively. . The mounting pieces 70 sandwich the cut-and-raised pieces 29 of the mounting portion 28 from both sides, and the first unit 64 is attached to the mounting plate 12.

  A lock that is detachably engaged with the stopper portion 30 of the mounting plate 12 in a state in which the first unit portion 64 is attached to the mounting plate 12 on the left side which is the side of the case 66 and on the main breaker 13 side A section 71 is provided. The locking portion 71 has a locking claw 72 protruding from the back surface of the case 66 and an operation portion 73 disposed on the side surface of the case 66. The locking portion 71 is capable of advancing and retracting from the back surface of the case 66, and is urged in the protruding direction so as to lock the stopper portion 30, and the locking portion 71 is removed from the stopper portion 30 against the biasing. The first unit portion 64 can be removed from the mounting plate 12 by a sliding operation. The stopper portion 30 of the mounting portion 28 adjacent to the mounting portion 28 to which the mounting structure 69 of the first unit portion 64 is mounted is locked.

  The power supply unit 67 converts commercial power supplied from the conductive bar 14 into a predetermined operation power supply for supplying the second unit unit 65 (the measurement unit 78), and converts the converted operation power supply with the feeder line. 2 to the unit unit 65 (measuring unit 78). The feeder of the power supply unit 67 is drawn out from the wiring hole 74 provided in the lower part of the back of the case 66, and the connector provided at the tip of the feeder is connected to the second unit 65 (measuring unit 78) . The power supply unit 67 includes a switch 75 for turning on and off the measurement unit 17, and the switch 75 is disposed on the front of the case 66.

  Furthermore, the first unit unit 64 includes a communication connector 76 for connecting the communication cable L when connecting a device such as a home gateway or PC performing power management with the measurement unit 17 by wire using the communication cable L. ing. The communication connector 76 is disposed on the lower surface of the case 66, and the communication cable L can be attached and detached from below.

  The second unit 65 includes a case 77 and a measuring unit 78 housed in the case 77.

  The case 77 is formed to have a longitudinal length (height) in the longitudinal direction longer than the case 66 of the first unit 64 and to have the same width as the case 66 of the first unit 64. It is formed.

  At the upper part of the front surface of the case 77 and on the right side on the branch breaker 15 side at the middle part in the vertical direction, recessed parts 79 and 80 are formed, into which the upper and lower connection units 16 are combined respectively. Then, after the connection unit 16 is attached to the back surface of the mounting plate 12, the second unit portion 65 is assembled on the back surface side of the connection unit 16 and screwed to the back surface of the mounting plate 12.

  At the lower part of the case 77, a protrusion 81 is provided which protrudes downward relative to the first unit 64 toward the peripheral wall 23 of the housing 11. A connection opening 82 is formed on the right side on the branch breaker 15 side of the protrusion 81, and a cover 83 for opening and closing the connection opening 82 is detachably attached. The front surface of the protrusion 81 is formed to be recessed rearward relative to the frontmost front portion of the case 77. The width of the protrusion 81 is wider than the width of the first unit portion 64, but may be the same as the width of the first unit portion 64.

  A recess 84 for forming a wiring space with the rear surface 22 of the base 20 is formed on the upper side of the rear surface of the case 77. The portion of the projecting portion 81 is projected to the rear of the case 77 in order to secure a wiring space in the projecting portion 81.

  The measuring unit 78 measures the amount of used electricity, which is power information of the load according to the current flowing from the branch breaker 15 to the load, or measures the amount of used electricity, which is the power information of the entire house according to the current flowing to the main breaker. . Furthermore, the measurement unit 78 also functions as a control unit that controls communication with devices such as a home gateway that performs power management and a personal computer. The measurement unit 78 includes a case 77 and a vertically long substrate 85, and electronic components constituting a measurement circuit and a control circuit are mounted on the substrate 85.

  Input connectors 86 and 87 to which the output connectors 61 of the upper and lower connection units 16 are respectively connected are mounted on the upper part of the substrate 85 and the middle part in the vertical direction. The input connectors 86 and 87 are formed wide, and the upper input connector 86 is disposed along the short direction of the substrate 85 in the longitudinal direction and is disposed facing the opening provided in the recess 79 of the case 77. Also, the lower input connector 87 is longitudinally oriented so that the longitudinal direction is disposed along the longitudinal direction of the substrate 85, and is disposed facing the opening provided in the recess 80 of the case 77. .

  Below the input connector 87 of the substrate 85, a connector 88 to which a feed line drawn from the power supply 67 and a transmission line for transmitting a voltage between the conductive bars 14 are connected is mounted.

  At the lower part of the substrate 85, a plurality of connectors 89 and a dip switch SW are mounted. The connector 89 has a signal line for inputting a detection signal from the current detection unit when the current detection unit is attached to the main breaker 13, a signal line for inputting information from a solar power generator or a fuel cell, etc. Various signal lines such as signal lines for inputting information are connected. The connectors 89 are disposed in openings provided on the front surface of the protrusion 81. A plurality of connectors 89 disposed on the front surface of the projecting portion 81 are configured as the signal line connection portion 90.

  The second unit unit 65 includes a wireless unit that performs wireless communication when wireless connection is made with a device such as a home gateway that performs power management or a personal computer and the measurement unit 17.

  A wiring space 91 is provided inside the connection opening 82 of the case 77. FIG. 5 shows a state in which the wireless unit 92 is disposed in the wiring space 91. In the wiring space 91, a connector for communication connected to the substrate 85 by a lead wire is disposed, and in this connector, either the communication line from the communication connector 76 provided in the first unit portion 64 or the wireless unit Or is connected. Further, when the measurement unit 78 is updated, a communication line from a personal computer or the like is connected.

  Then, at the time of construction of the distribution board 10, power lines for supplying commercial power led to the wall, a plurality of power lines connected to each load, and various signal lines including communication lines can be connected from the opening 24 to the base 20. Retract in and secure the base 20 to the wall.

  Power lines for supplying commercial power are connected to the main breaker 13, power lines connected to the loads are connected to the branch breakers 15, and signal lines are connected to the signal line connection unit 90 of the measurement unit 17. Further, in the case of including a current detection unit for detecting the power flowing to the master breaker 13, the signal line from the current detection unit is connected to the signal line connection unit 90 of the measurement unit 17.

  When the distribution board 10 is used, the power supply unit 67 provided in the first unit unit 64 of the measurement unit 17 converts commercial power supplied from the first conductive bar 14 into a predetermined operation power supply, It supplies to the measurement part 78 with which the 2nd unit part 65 is equipped. The measurement unit 78 operates by receiving the supply of operation power from the power supply unit 67.

  When the load connected to the branch breaker 15 uses electric power and a current flows from the branch breaker 15 to the load, the current detection unit 47 outputs a detection signal corresponding to the current flowing through the branch breaker 15, and this detection signal is a lead The signal is input to the measurement unit 78 through the line 54 and the connection substrate 58 of the connection unit 16. Further, a detection signal from the current detection unit provided in the master breaker 13 is input to the measurement unit 78.

  The measurement unit 78 acquires a detection signal corresponding to the current flowing to each branch breaker 15 and a detection signal corresponding to the current flowing to the main breaker 13. In addition, the measuring unit 78 measures the power consumption for each load connected to each branch breaker 15 based on the acquired detection signal and the voltage information received from the first unit 64, and the power consumption of the entire house And transmit measurement results to devices such as home gateways and PCs that perform power management by wire or wirelessly. Furthermore, the measurement unit 78 transmits information input from the solar power generation device, the fuel cell, or the like to a device such as a home gateway or a personal computer by wire or wirelessly.

  And since the measurement unit 17 of this embodiment is divided into the first unit portion 64 having the power supply portion 67 and the second unit portion 65 having the measurement portion 78, the measurement portion 78 is provided from the power supply portion 67. It can reduce the influence of noise.

  In order to attach the first unit portion 64 to the front surface of the mounting plate 12 and to attach the second unit portion 65 to the back surface of the mounting plate 12 on the back side of the first unit 64, the measurement unit 17 is mounted in the distribution board 10. Space can be used effectively.

  Further, the width of the first unit portion 64 is provided for the width of two or more of the branch breakers 15, but the mounting structure 69 for mounting on the mounting portion 28 of the mounting plate 12 is the width direction of the first unit portion 64. The first unit portion 65 can be attached to the mounting plate 12 even when the pitch of the mounting portions 28 of the mounting plate 12 differs depending on the specifications of the distribution board 10.

  Since the locking portion 71 for locking to the stopper portion 30 is provided on the side surface of the first unit portion 64, the first unit portion 64 is attached to the mounting plate 12 using the stopper portion 30 for the branch breaker 15 It can be locked in the

  Further, since the second unit portion 65 has the projecting portion 81 which protrudes more than the end portion of the first unit portion 64 on the opposite side to the conductive bar 14 side, that is, the measuring unit 17 has the housing 11. The signal line connected to the measurement unit 17 is wired on the left side of the protrusion 81, for example, and the branch breaker 15 on the right side of the protrusion 81 is provided. By connecting the power lines to be connected, the signal lines and the power lines can be divided and wired, and the routing of the lines in the housing 11 can be facilitated.

  Since the second unit portion 65 has the projecting portion 81, the signal line connecting portion 90 can be provided on the front surface of the projecting portion 81, and the wiring space of the signal line can be secured.

  The recess 84 is formed on the back of the second unit 65, and the second unit 65 has the same width as the first unit 64. A wiring space can be secured between the two and the side of the second unit portion 65, and wiring of the wiring in the housing 11 can be facilitated.

  The measurement unit 78 of the second unit unit 65 mounts the wide input connector 87 in the middle of the substrate 85 in the longitudinal direction, and mount the input connector 87 along the longitudinal direction of the substrate 85 in the longitudinal direction. Thus, the side portion of the input connector 87 can be used as a wiring or other component mounting area of the substrate 85, and the width direction of the substrate 85 can be effectively used to reduce the size of the substrate 85 in the width direction.

  Further, the measurement unit 17 is disposed on one side of the main breaker 13 on the main breaker 13 side in the installation area of the branch breaker 15, that is, between the main breaker 13 and the branch breaker 15, the main unit In the case where the breaker 13 and the measurement unit 17 are close to each other and the master breaker 13 and the measurement unit 17 are connected by the signal line, the wiring distance can be shortened, and the wiring in the housing 11 can be facilitated. Moreover, the signal line connected to the measurement unit 17 and the power line connected to the branch breaker 15 can be easily divided and wired, and the wiring work of the signal line and the power line can be facilitated.

  The signal lines connected to the signal line connection portion 90 provided in the projecting portion 81 of the measurement unit 17 are wired together at the lower side in the housing 11, and the upper side in the housing 11 is connected to the main breaker 13. Since the power lines to be connected are wired, by dividing the power lines and the signal lines into the upper and lower parts of the housing 11 at the time of construction, the subsequent wiring work can be facilitated.

  Further, a wiring space 91 is provided in the projecting portion 81 on the branch breaker 15 side, and wiring work to the measuring instrument 78 can be facilitated by using the wiring space 91.

  Further, even if the measurement unit 17 is installed on the side of the main breaker 13, the conductor 40 is separated from the measurement unit 17 by the protection unit 41, so that the contact between the conductor 40 and the signal line can be prevented. A wiring space can be secured between the protection unit 41 and the measurement unit 17, and wiring of signal lines to the measurement unit 17 can be easily made.

  Further, as shown in FIG. 7, when the branch breaker 15 is attached to the mounting plate 12, the connector 55 can not be removed from the connection connector 60 because the length of the lead wire 54 is set. Therefore, it is possible to prevent the connector 55 from being removed accidentally when the distribution board 10 is installed or when a power line is connected to the branch breaker 15 or the like. Since the lead wire 54 does not greatly protrude from the branch breaker 15, the power line connected to the branch breaker 15 is difficult to be mixed with the lead wire 54, and the power line can be easily routed.

  In addition, in a state where the branch breaker 15 is attached to the mounting plate 12, in order to prevent the connector 55 from being removed from the connection connector 60, it may be configured as in the second embodiment shown in FIG. In the second embodiment, on the lower side of the mounting position where the branch breaker 15 is attached to the mounting plate 12, the connection connector 60 for connecting the connector 55 of the lead wire 54 from the branch breaker 15 is disposed. The distance from the lead-out portion of the lead wire 54 of the branch breaker 15 to the connector 55 is X. Then, with the branch breaker 15 attached to the mounting plate 12, the connector 55 can not be removed from the connection connector 60. Further, when the branch breaker 15 is removed from the mounting plate 12 and moved by the distance X, the connector 55 is exposed, and the connector 55 can be removed from the connection connector 60.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Distribution board
12 Mounting plate
13 Main breaker
14 Conductive bars
15 branch breaker
17 Measurement unit
64 1st unit part
65 Second unit part
78 Measurement unit
81 protrusion
90 signal line connection

Claims (2)

A first unit part attached to the mounting plate of the distribution board and connected to the at least two conductive bars;
A protrusion which is disposed on the back side of the first unit portion and which protrudes from the end opposite to the conductive bar side of the first unit portion and flows to the main breaker on the front side of the protrusion A second unit including a signal line connection unit connecting a signal line for acquiring a detection signal corresponding to the current, and a measurement unit measuring an amount of electric power from the detection signal;
A measurement unit characterized by comprising. Mounting plate;
A master breaker attached to the mounting plate and supplied with commercial power on the primary side;
A conductive bar attached to the mounting plate and connected to the secondary side of the main breaker;
A branch breaker attached to the mounting plate and connected to the conductive bar;
The measurement unit according to claim 1, wherein the first unit portion is attached to the front surface of the attachment plate and the second unit portion is attached to the back surface of the attachment plate;
Distribution board characterized by having.

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