JP2018153096A - Measurement unit and distributing board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measurement unit which can be arranged by using a space in a distributing board effectively.SOLUTION: A measurement unit 17 includes a first unit 64 and a second unit 65. The first unit 64 is attached to the mounting plate 12 of a distributing board 10, and is connected with at least two conductive bars 14. The second unit 65 is arranged at a back side of the first unit 64, and provided with a protrusion 81 protruding farther than an end at an opposite side to a conductive bar 14 side of the first unit 64, and a measurement part 78 having a signal connection 90 connecting a signal line for acquiring a detection signal corresponding to a current flowing to a trunk breaker 15 at a front side of the protrusion 81, and measuring electric energy from the detection signal.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a measurement unit that measures power consumption and a distribution board using the measurement unit.

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

  In such a distribution board, there is one in which the power consumption for each load connected to each branch breaker and the power consumption of the entire house can be measured by a measurement unit.

  The measurement unit is often placed on one side of the branch breaker, which is the opposite side of the main breaker, but it takes up installation space in the distribution board, for example, the number of branch breakers is limited, or the distribution board is installed. May be upsized.

JP 2013-183581 A JP 2014-93915 A

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

  The measurement unit of the embodiment includes a first unit part and a second unit part. The first unit part is attached to a mounting plate of the distribution board and is connected to at least two conductive bars. The second unit portion is disposed on the back side of the first unit portion, and protrudes from the opposite end to the conductive bar side of the first unit portion and on the front side of the protruding portion. A measurement unit that includes a signal line connection unit that connects a signal line for acquiring a detection signal corresponding to the current flowing through the main breaker and that measures the amount of electric power from the detection signal is provided.

  According to the present invention, it can be expected that the measurement unit is arranged by effectively using 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 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 2nd Embodiment and is a side view which shows attachment and the electrical connection of the branch breaker of a distribution board.

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

  FIG. 8 shows a residential distribution board 10. 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 mounted in the housing 11, and a 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 a measuring unit 17 are respectively attached.

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

  The housing 11 includes a base 20 attached to the wall surface and a front cover 21 attached to the front surface 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 surfaces of the main breaker 13, the branch breaker 15, and the measurement unit 17.

  The mounting plate 12 includes 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 measurement unit 17, and these mounting plate portions 12a, 12b is linked. The mounting plate 12 is mounted in a state separated from the back surface portion 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 portion 22 of the base 20.

  In the mounting plate 12 (mounting plate portion 12b), a conductive bar 14 is disposed in the center region in the vertical direction of the mounting plate 12 along the left-right direction. A plurality of mounting portions 28 for mounting side by side in the direction are arranged in parallel. 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 protruding from the edge of the mounting plate 12 to the front side of the mounting plate 12 A part 30 is provided.

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

  The conductive bar 14 includes three conductive bars 14 for a neutral electrode and a pair of voltage electrodes in order to supply a single-phase three-wire AC power supply. These three conductive bars 14 overlap each other with a predetermined interval in the front-rear direction when viewed from the front surface of the distribution board 10 and are disposed along the left-right direction of the distribution board 10. Both ends of the conductive bar 14 in the left-right direction are attached to the front surface of the mounting plate 12 by a support base 37 having an insulating property.

  Further, a conductor 40 is used to electrically connect the output terminal portion 34 of the main breaker 13 and the conductive bar 14. The conductor 40 is three metal plates 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 part 41 is used to cover the conductor 40 and to isolate it from the measurement unit 17. The protection part 41 has a lower frame part 42 arranged on the lower side of the main breaker 13 and a side frame part 43 arranged on the side part of the main breaker 13 from the lower frame part 42, and is formed in a substantially L-shape. Has been. An accommodation space for accommodating the conductor 40 is formed in the protection portion 41 from the lower frame portion 42 to the side frame portion 43. Then, the conductor 40 is isolated 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 respectively arranged on the upper stage and the lower stage with the conductive bar 14 interposed therebetween, and are arranged in parallel in the left-right direction for each stage. These branch breakers 15 are attached to the respective attachment portions 28 of the attachment plate 12 with their directions opposite to each other above and below the conductive bar 14, and are electrically connected to the conductive bar 14.

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

  The case 46 is made of an insulating synthetic resin and has a narrow width when viewed from the front surface of the case 46 and an elongated shape in the vertical direction. 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 that is electrically connected to the conductive bar 14 is provided on one end side in the longitudinal direction when viewed from the front side of the case 46, and an electric wire that supplies power to the load is provided on the other end side. An electric wire connecting portion 50 to be connected is provided. The conductive bar connection portion 49 has three groove portions into which the conductive bar 14 is inserted, and terminals that are electrically connected to the conductive bar 14 are arranged in two of the three groove portions. The load connected to the branch breaker 15 differs depending on whether the load is 100V or 200V.

  An attachment structure 51 for attaching to the attachment portion 28 is provided at two locations on the upper and lower sides of the back surface of the case 46. The attachment structure 51 protrudes from the back surface of the case 46 so that substantially L-shaped attachment pieces 52 face each other. These attachment pieces 52 sandwich the cut and raised pieces 29 of the attachment portion 28 from both sides, and attach the branch breaker 15 to the attachment plate 12.

  At the other end of the case 46 where the electric wire connecting portion 50 is provided, there is provided a locking portion 53 that is detachably locked to the stopper portion 30 of the mounting plate 12 with the branch breaker 15 mounted on the mounting plate 12. It has been. The locking portion 53 is provided so as to be able to advance and retreat from the back surface of the case 46, and is biased in the protruding direction so as to be locked to the stopper portion 30. The branch breaker 15 can be detached from the mounting plate 12 by performing a sliding operation in the direction of removing from the portion 30.

  The circuit breaker unit is capable of opening and closing the connection circuit between the terminal of the conductive bar connection portion 49 and the terminal of the wire connection portion 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 a set value flows in the closed state of the connection circuit.

  The current detection unit 47 is configured by a CT (Current Transformer) including a core and a detection coil combined with the core. A conductor connecting the terminal of the conductive bar connecting portion 49 and the circuit breaker unit is inserted into the core, the lead wire 54 connected to the detection coil is pulled out from the back of the branch breaker 15, and a connector 55 is connected to the tip of the lead wire 54. It is connected. When the load connected to the branch breaker 15 uses electric power and a load current flows through 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 cannot be removed from the connection connector 60 in a state where the branch breaker 15 is attached to the attachment plate 12.

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

  The connection unit 16 includes a connection board 58 and a connection case 59 that covers and holds the connection board 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 branch breakers 15 are mounted on the upper side or the lower side of the connection board 58, and the measurement is performed at the left end which is 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 board 58. The output connector 61 is formed wide. In the upper connection unit 16, the longitudinal direction of the output connector 61 mounted on the connection board 58 is directed horizontally, and in the lower connection unit 16, it is mounted on the connection board 58. The longitudinal direction of the output connector 61 is oriented in the vertical direction.

  The connection connector 60 is disposed so as 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 a state where the connection unit 16 is attached to the attachment plate 12, each connection connector 60 is disposed at the upper and lower edges of the attachment plate 12 corresponding to the position of each attachment portion 28. The connector 55 of the lead wire 54 of the branch breaker 15 is connected to the upper connection connectors 60 from above and the lower connection connectors 60 from below.

  Note that a breaker 15a using photovoltaic power generation is arranged on the right side of the installation area of the lower branch breaker 15.

  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 that is the main breaker 13 side in the installation region 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 side of the first unit portion 64.

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

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

  Three grooves 68 into which the conductive bar 14 is fitted are formed on the upper surface of the case 66. Terminals that are electrically connected to the conductive bar 14 are arranged in at least two of the three grooves 68 so that 100 V of power is supplied to the power source 67. It should be noted that terminals connected to the three conductive bars 14 may be disposed in the three groove portions 68 of the case 66, and a voltage between any two conductive bars 14 may be measured.

  On the back surface of the case 66, an attachment structure 69 that is attached to one attachment portion 28 of the attachment plate 12 is provided at one central position in the width direction. The mounting structure 69 is the same as the mounting structure 51 of the branch breaker 15, and two substantially upper L-shaped mounting pieces 70 protrude from the back surface of the case 66 so as to face each other at two locations above and below the case 66. . These attachment pieces 70 sandwich the cut and raised pieces 29 of the attachment portion 28 from both sides, and attach the first unit portion 64 to the attachment plate 12.

  On the left side surface of the case 66 on the main breaker 13 side, the first unit portion 64 is attached to the mounting plate 12 and is detachably locked to the stopper portion 30 of the mounting plate 12 A portion 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 can be advanced and retracted from the back surface of the case 66, and is biased in the protruding direction so as to be locked to the stopper portion 30, and the locking portion 71 is released from the stopper portion 30 against the biasing. The first unit portion 64 can be detached from the mounting plate 12 by performing a sliding operation. The mounting structure 69 of the first unit portion 64 is locked to the stopper portion 30 of the mounting portion 28 adjacent to the mounting portion 28 to which the mounting structure 69 is mounted.

  The power supply unit 67 converts the commercial power supplied from the conductive bar 14 into a predetermined operation power supply for supplying to the second unit unit 65 (measurement unit 78). 2 unit unit 65 (measurement unit 78). A power supply line of the power supply unit 67 is drawn out from a wiring hole 74 provided in the lower part of the back surface of the case 66, and a connector provided at the tip of the power supply line is connected to the second unit unit 65 (measurement 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 surface of the case 66.

  Further, the first unit section 64 includes a communication connector 76 for connecting the communication cable L when the measurement unit 17 is wired to the home gateway or personal computer for performing power management and the measurement unit 17 via the communication cable L. ing. The communication connector 76 is disposed on the lower surface of the case 66 so that the communication cable L can be attached and detached from below.

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

  The case 77 is vertically long and has a length dimension (height dimension) that is longer in the longitudinal direction than the case 66 of the first unit section 64, and has the same width dimension as the case 66 of the first unit section 64. Is formed.

  In the upper part of the front surface of the case 77 and on the right side which is the branch breaker 15 side in the middle part in the vertical direction, recesses 79 and 80 to which the upper and lower connection units 16 are respectively combined are formed. After the connection unit 16 is attached to the back surface of the mounting plate 12, the second unit portion 65 is combined with the back side of the connection unit 16 and screwed to the back surface of the mounting plate 12.

  A projecting portion 81 projecting downward from the first unit portion 64 toward the peripheral wall portion 23 of the housing 11 is provided at the lower portion of the case 77. A connection opening 82 is formed on the right side of the projecting portion 81 on the branch breaker 15 side, and a cover 83 for opening and closing the connection opening 82 is detachably attached. The front surface of the projecting portion 81 is formed so as to be recessed rearward from the front surface portion located at the forefront of the case 77. The width of the protruding portion 81 is formed wider than the width of the first unit portion 64, but may be the same as the width of the first unit portion 64.

  On the upper side of the back surface of the case 77, a recess 84 for forming a wiring space between the back surface portion 22 of the base 20 is formed. Note that the protruding portion 81 protrudes behind the case 77 in order to secure a wiring space in the protruding portion 81.

  The measuring unit 78 measures the power usage, which is the power information of the load corresponding to the current flowing from the branch breaker 15 to the load, or the power usage, 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 and a personal computer that perform power management. 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 portion of the substrate 85 and an intermediate portion in the vertical direction. The input connectors 86 and 87 are formed wide, and the upper input connector 86 is disposed so that its longitudinal direction is along the short direction of the substrate 85 and faces the opening provided in the recessed portion 79 of the case 77. Further, the lower input connector 87 is oriented in the longitudinal direction so that the longitudinal direction is arranged along the longitudinal direction of the substrate 85, and is arranged facing the opening provided in the recessed portion 80 of the case 77. .

  Mounted below the input connector 87 of the board 85 is a connector 88 to which a power supply line drawn from the power supply unit 67 and a transmission line for transmitting a voltage between the conductive bars 14 are connected.

  A plurality of connectors 89 and dip switches SW are mounted on the lower portion of the substrate 85. The connector 89 has a signal line for inputting a detection signal from the current detection unit, a signal line for inputting information from a solar power generation device or a fuel cell, etc. Various signal lines such as a signal line for inputting information are connected. These connectors 89 are arranged in openings provided on the front surface of the protruding portion 81. A plurality of connectors 89 arranged on the front surface of the protruding portion 81 are configured as the signal line connecting portion 90.

  Note that the second unit 65 includes a wireless unit that performs wireless communication when the measurement unit 17 is wirelessly connected to a home gateway or a personal computer that performs power management.

  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 arranged in the wiring space 91. In the wiring space 91, a connector for communication connected to the substrate 85 by a lead wire is arranged, and either a communication line from the communication connector 76 provided in the first unit section 64 or a wireless unit is connected to this connector. Is connected. In addition, a communication line from a personal computer or the like is connected when the measuring unit 78 is updated.

  When the distribution board 10 is installed, a power line for supplying commercial power led to the wall surface, a plurality of power lines connected to each load, and various signal lines including communication lines from the opening 24 to the base 20 Pull in and secure the base 20 to the wall.

  A power line for supplying commercial power is connected to the main breaker 13, a power line connected to each load is connected to each branch breaker 15, and each signal line is connected to a signal line connection unit 90 of the measurement unit 17. When a current detection unit for detecting the power flowing through the main breaker 13 is provided, 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 source 67 provided in the first unit 64 of the measurement unit 17 converts the commercial power supplied from the first conductive bar 14 into a predetermined power for operation. It supplies to the measurement part 78 with which the 2nd unit part 65 is provided. The measurement unit 78 operates by receiving the operation power from the power supply unit 67.

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

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

  The measurement unit 17 of the present embodiment is divided into a first unit part 64 having a power supply part 67 and a second unit part 65 having a measurement part 78, so that the measurement part 78 is separated from the power supply part 67. It is possible to reduce the influence of noise.

  Since the first unit portion 64 is attached to the front surface of the mounting plate 12 and the second unit portion 65 is attached to the rear surface of the mounting plate 12 on the back side of the first unit 64, the measuring unit 17 is installed in the distribution board 10. It can be installed using the space effectively.

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

  Since the locking portion 71 that locks 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 state.

  Further, since the second unit portion 65 has a protruding portion 81 that protrudes from the end portion opposite to the conductive bar 14 side of the first unit portion 64, that is, the measurement unit 17 includes the housing 11. For example, a signal line connected to the measurement unit 17 is wired on the left side of the projecting portion 81 and the branch breaker 15 is connected to the right side of the projecting portion 81. By wiring the power lines to be connected, it is possible to separate the signal lines and the power lines, and the wiring within the casing 11 can be easily performed.

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

  Since the recessed part 84 is formed in the back surface of the 2nd unit part 65, and the 2nd unit part 65 is provided in the same width as the 1st unit part 64, the 2nd unit part 65 and a housing | casing A wiring space can be ensured between the housing 11 and the side of the second unit portion 65, and wiring can be easily performed in the housing 11.

  The measuring unit 78 of the second unit portion 65 mounts a wide input connector 87 in the middle portion of the substrate 85 in the longitudinal direction, and the longitudinal direction of the input connector 87 is mounted along the longitudinal direction of the substrate 85. As a result, the side portion of the input connector 87 can be used as a wiring or other component mounting area of the board 85, the width direction of the board 85 can be effectively used, and the width direction dimension of the board 85 can be reduced.

  The measurement unit 17 is arranged on one side of the main breaker 13 and on the main breaker 13 side of the installation area of the branch breaker 15, that is, the measurement unit 17 is arranged between the main breaker 13 and the branch breaker 15. Since the breaker 13 and the measurement unit 17 are close to each other, the wiring distance when the main breaker 13 and the measurement unit 17 are connected by the signal line can be shortened, and the wiring in the casing 11 can be easily performed. In addition, the signal line connected to the measurement unit 17 and the power line connected to the branch breaker 15 can be easily wired separately, and the wiring work of the signal line and the power line can be facilitated.

  The signal lines connected to the signal line connection part 90 provided on the projecting part 81 of the measurement unit 17 are wired together at the lower side of the casing 11, and connected to the main breaker 13 at the upper side of the casing 11. Since the power line is wired, the power line and the signal line are distributed up and down of the housing 11 at the time of construction, so that the subsequent wiring work can be facilitated.

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

  In addition, even if the measurement unit 17 is installed on the side of the main breaker 13, the conductor 40 is isolated from the measurement unit 17 by the protection unit 41, so that the conductor 40 and the signal line can be prevented from contacting each other, A wiring space can be secured between the protection unit 41 and the measurement unit 17, and signal wiring can be easily routed to the measurement unit 17.

  Further, as shown in FIG. 7, in a state where the branch breaker 15 is attached to the attachment plate 12, the connector 55 cannot be detached 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 accidentally disconnected when the distribution board 10 is installed or when the power line is connected to the branch breaker 15. Since the lead wire 54 does not protrude greatly from the branch breaker 15, the power line connected to the branch breaker 15 is unlikely to be mixed with the lead wire 54, and the power line can be easily routed.

  In order to prevent the connector 55 from being removed from the connection connector 60 in a state where the branch breaker 15 is attached to the attachment plate 12, a configuration as in the second embodiment shown in FIG. In the second embodiment, the connection connector 60 for connecting the connector 55 of the lead wire 54 from the branch breaker 15 is disposed below the mounting position where the branch breaker 15 is mounted on the mounting plate 12. The distance from the lead-out portion of the lead wire 54 of the branch breaker 15 to the connector 55 is X. In the state where the branch breaker 15 is attached to the attachment plate 12, the connector 55 cannot be detached 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 detached from the connection connector 60.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and 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 Master breaker
14 Conductive bar
15 branch breaker
17 Measuring unit
64 First unit
65 Second unit
78 Measurement unit
81 Protrusion
90 Signal line connection

Claims (2)

A first unit portion attached to a distribution board mounting plate and connected to at least two conductive bars;
The first unit portion is disposed on the back side of the first unit portion and protrudes from the opposite end of the first unit portion to the conductive bar side, and flows to the main breaker on the front side of the protruding portion. A second unit having a signal line connecting part for connecting a signal line for obtaining a detection signal corresponding to the current, and provided with a measuring part for measuring the electric energy from the detection signal;
A measuring unit comprising: A mounting plate;
A main breaker attached to the mounting plate and supplied with commercial power to 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 rear surface of the attachment plate.
A distribution board characterized by comprising:

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