JP6173739B2 - Distribution board - Google Patents

Description

  The present invention relates to a current board that measures a current for each branch circuit, and a distribution board that is equipped with a unit that calculates electric power from the measured current information and outputs it to the outside.

  2. Description of the Related Art Conventionally, there is a distribution board equipped with a device that measures the current flowing through each branch circuit and measures the power consumption of each branch circuit. For example, in Patent Document 1, a branch current sensor board having a sensor for measuring the current of each branch circuit in a distribution board, a measurement control unit that determines a measured current value or calculates power, a current abnormality An alarm unit for informing the occurrence of the occurrence of the problem is arranged, a threshold is set, and when the branch current exceeds the threshold, a display notification or an alarm is issued by the light emission of the LED, thereby enabling fine power management.

JP 2008-136279 A

The measurement control unit of Patent Document 1 has substantially the same shape as the branch breaker, and has a plurality of recesses fitted to the main bar at the back, and can be disposed adjacent to the assembled branch breaker, and can be installed in a small space. It is configured.
However, the power introduction part of the measurement control unit and the current data input part from the branch current sensor board are formed according to the secondary terminal position of the branch breaker, and are arranged on the surface opposite to the recess forming surface. The wiring for connecting the wiring to each of them is necessary, and the routing is troublesome.

  Therefore, in view of such problems, the present invention attaches the distribution board to a predetermined part of a unit that calculates the power consumption of the branch circuit based on the branch current information detected by the current sensor. It is an object of the present invention to provide a distribution board that can be connected to a power source only by being implemented, and can also be connected to a substrate on which a current sensor is assembled.

In order to solve the above-mentioned problems, the invention of claim 1 is directed to a main breaker and a plurality of main bars arranged on the secondary side of the main breaker arranged on at least one side of both sides thereof. A distribution board that connects the primary terminal of the branch breaker to the main bar and branches the circuit from the main bar, and has a plurality of current sensors that measure the current flowing through the individual branch breakers. A current sensor unit that measures individual branch currents and a communication measurement unit that is installed in a predetermined part adjacent to the branch breaker and calculates and outputs power consumption based on current information detected by the current sensors The communication measurement unit has a plurality of recesses that fit into the main bar when installed at a predetermined site, and a terminal fitting that contacts the main bar fitted in the recess is arranged in the recess, and a terminal Money There constitute a power supply terminal, the power is supplied to the communication measuring unit by installing operation, the measuring voltage converter provided in communication measuring unit, for power operation to obtain the voltage information of the main trunk bar Voltage data is generated .
According to this configuration, the communication measurement unit that calculates the power consumption based on the branch current information is installed at a predetermined site, and thus power is directly supplied from the trunk bar. Therefore, the power source can be connected by a simple assembling work, and no additional wiring for power supply is required.

According to a second aspect of the present invention, in the configuration of the first aspect, the current sensor unit and the communication measurement unit include a connector for directly connecting to each other, and the connector of the communication measurement unit is provided at a portion adjacent to the recess. The connectors are connected to each other by the installation operation of the communication measurement unit.
According to this configuration, since the communication measurement unit is connected to the current sensor unit when installed at a predetermined site, the communication measurement unit and the current sensor unit are connected simultaneously with the connection of the power supply. Therefore, no separate connection work is required, and no wiring between the communication measurement unit and the current sensor unit is necessary.

According to the present invention, the communication measuring unit that calculates the power consumption based on the branch current information is directly supplied with power from the main bar by installing a predetermined part, so that the power can be connected with a simple assembly operation. No additional wiring is required for power supply.
Further, since the communication measurement unit is connected to the current sensor unit when installed at a predetermined site, the communication measurement unit and the current sensor unit are connected simultaneously with the connection of the power supply. Therefore, no separate connection work is required, and no wiring between the communication measurement unit and the current sensor unit is necessary.

It is a front view which showed an example of the distribution board which concerns on this invention, and removed the cover plate. It is a block diagram which shows typically the electricity distribution panel of FIG. It is the figure which showed the principal part apparatus of FIG. 1 with the circuit block diagram. The current sensor unit is shown, (a) is a plan view, (b) is a front view. A main bar is shown, (a) is a top view and (b) is a front view. It is an external view of a communication measurement unit, (a) is a plan view, (b) is a front view, and (c) is a left side view. It is a perspective view of a distribution board which attached a main breaker, one main bar, and a current sensor unit. It is an A section enlarged view. It is a perspective view of the current sensor unit equipped with an insulating cover. It is a perspective view of the distribution board which removed the upper branch breaker. It is a B section enlarged view.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an example of a distribution board according to the present invention, and shows a front view with a cover plate removed. In FIG. 1, 1 is a main breaker, 2 is a branch breaker, 3 is an extended measurement unit for measuring the power generated by photovoltaic power generation and the power consumption of an electric water heater, and 4 is a pulse signal output from a water meter or gas meter. A pulse measuring unit 5 for measuring the amount of use is a communication measuring unit for outputting the measured data to the outside.
As shown in FIG. 1, the branch breakers 2 are arranged in two upper and lower stages, and the extension measurement unit 3, the pulse measurement unit 4, and the communication measurement unit 5 are installed so as to be continuous with the branch breaker 2. . In addition, 8 is a free space which accommodates the primary feed switch etc. to a photovoltaic power generation facility, 9 is a nameplate used for the display etc. of a branch destination.

FIG. 2 is a configuration diagram showing the connection of the devices assembled to the distribution board. The main bar 10 connected to the secondary side of the main breaker 1 via the connection conductor 11 extends from side to side in the center of the distribution board. The branch breakers 2 are arranged adjacent to each other so as to sandwich the main bar 10 therebetween.
Reference numeral 21 denotes a current sensor board on which a current sensor for measuring a branch current is assembled. Reference numeral 22 denotes a sensor connection board for transmitting the measured branch current information to the communication measurement unit 5. Are installed so as to overlap the main bar 10.

  SP is a solar cell panel, 12 is a primary feed switch for connecting the solar cell panel 11 to the lead-in line L, and the extension measurement unit 3 detects the photovoltaic power generation current by the current transformer 13 and uses the generated power. Calculate and transmit to the communication measurement unit 5. FIG. 2 shows only the extended measurement unit 3 that measures solar power generation, and the extended measurement unit 3 that measures the power consumption of the electric water heater is omitted because it has the same configuration.

  FIG. 3 shows a principal circuit block diagram of the extension measurement unit 3, the pulse measurement unit 4, and the communication measurement unit 5. The extended measurement unit 3 includes a power measurement unit 31 that calculates power from the circuit current information of the photovoltaic power generation detected by the current transformer 13, a control CPU 32 that controls the extended measurement unit 3, and the calculated measurement data as the communication measurement unit 5. A communication IF 33 for transmitting to the power supply, a power supply terminal 34 for receiving power supply from the communication measurement unit 5 via the cable C, and the like.

  The pulse measurement unit 4 receives a pulse signal (water pulse) output from the water meter and a pulse signal (gas pulse) output from the gas meter, and measures the pulse measurement unit 41 and the pulse measurement unit 4 as a whole to measure the amount of each used. A control CPU 42 for controlling, a communication IF 43 for transmitting measurement data to the communication measurement unit 5, a power supply terminal 44 for receiving power supply from the communication measurement unit 5 via the cable C, and the like are provided.

  The communication measurement unit 5 is connected to the main bar 10 to generate its own driving power and driving power for each unit, and obtains voltage information of the main bar 10 from the power source 51 for power calculation. A measurement voltage conversion unit 52 that generates voltage data, a current measurement unit 53 that obtains current information transmitted from the current sensor unit 20 and a current flowing through the lead-in line L from the current transformer 14, and calculates the respective power, communication measurement Measurement was performed via a LAN to an internal communication IF 55 for obtaining generated power data and water / gas usage data from the control CPU 54, the extended measurement unit 3, and the pulse measurement unit 4 that control the entire unit 5, and an external personal computer. An external communication IF 56 for outputting data is provided.

  4A and 4B show the current sensor unit 20, where FIG. 4A is a plan view and FIG. 4B is a front view. As described above, the current sensor unit 20 includes the current sensor substrate 21 and the sensor connection substrate 22, and the current sensor substrate 21 has comb-like portions 21 b in which a plurality of cutouts 21 a are formed at regular intervals. A current sensor 23 is assembled to the side of the notch 21a. For example, a GMR element (giant magnetoresistive element) is used for the current sensor 23.

On the other hand, the sensor connection board 22 is connected to a plurality of current sensor boards 21 via connectors 24 and collects current information detected by the individual current sensors 23. Specifically, in FIG. 4, four current sensor substrates 21 are connected to the sensor connection substrate 22.
Two current sensor substrates 21 having an upward comb-like portion 21b are attached to one surface of the sensor connection substrate 22, and two current sensor substrates 21 having a downward comb-like portion 21b are attached to the other surface. The currents branched from the two main bars 10 constituting the voltage phase of the single-phase three-wire circuit are respectively measured.
A connector 25 for connecting the communication measurement unit 5 is provided at the end of the sensor connection board 22.
Note that the plane shown in the plan view of FIG. 4A faces forward when the current sensor unit 20 is assembled to the distribution board, and the front side shown in FIG. 4B is upward when the current sensor unit 20 is assembled to the distribution board. Facing.

FIG. 5 shows the main bar 10, (a) is a plan view, and (b) is a front view. In the case of a single-phase three-wire electric circuit, the main bar 10 is composed of three pieces composed of two voltage phases and one neutral phase, and FIG. 5 shows the main bar 10 used for the voltage phase. . The main bar 10 is formed with connecting portions 15 that connect the branch breakers 2 on both sides of the long side, and the main bar 10 used for the voltage phase has a plurality of branch current detections on one side. A notch 10a is provided to form a branch bar 10b.
Further, an insertion portion 10c for inserting individual protrusions of the comb-like portion 21b of the current sensor substrate 21 is formed at the back of the notch 10a. In the other side portion, the connection portion 15 is formed with a uniform end face without any irregularities.

  The branch bar 10b is formed at a pitch that matches the installation interval of the branch breaker 2 to be connected (matches the width of the branch breaker 2), and inserts the comb-like portion 21b of the current sensor substrate 21 into the insertion portion 10c. Thus, the current sensor 23 is disposed close to the branch bar 10b so as to detect the current flowing through the branch bar 10b out of the current flowing through the main bar 10.

  Of the main bars 10, two main bars 10 used for the voltage phase are formed with branch bars 10b for measuring the current, but one main main bar used for the neutral phase. Since the bar 10 does not need to measure current, there is no branch bar 10b, and both side portions are formed with uniform end faces.

  FIG. 6 shows the communication measurement unit 5, (a) is a plan view, (b) is a front view, and (c) is a left side view. The communication measuring unit 5 is provided with a current terminal 58 for connecting a current transformer on the top surface, a device communication terminal 59 for communicating with each device, an external communication terminal 60 for outputting signals to the outside, and the like, and a current sensor unit on the front surface. An information input connector 61 is provided for connecting to 20 and inputting current information. The information input connector 61 is connected to the connector 25 of the current sensor unit 20.

In addition, on the front surface adjacent to the information input connector 61, three recesses 62 that fit into the main bar 10 are formed, and in the recess 62, the main bar 10 inserted is contacted to ensure power, A terminal metal fitting 62a for obtaining electric circuit voltage information is provided, and the recess 62 constitutes a power supply terminal.
The communication measuring unit 5 is installed in a portion where the connector 25 of the current sensor unit 20 which is a portion adjacent to the branch breaker 2 is disposed, so that the information input connector 61 is connected to the connector 25 and at the same time the recess 62. The main bar 10 is fitted and connected to the main body. That is, a power supply terminal is also connected.

FIG. 7 is a perspective view of a distribution board in which the main circuit breaker 1, one main bar 10 arranged at the deepest part of the distribution board, and the current sensor unit 20 are assembled. FIG. ing. As shown in FIGS. 7 and 8, the current sensor substrate 21 of the current sensor unit 20 is disposed so as to intersect the branch bar 10 b formed on the main bar 10 from the orthogonal direction.
FIG. 9 shows a single unit from which the current sensor unit 20 shown in FIG. 7 is extracted, and shows a perspective view as seen from above the distribution board. As shown in FIG. 9, the current sensor unit 20 is protected by an insulating cover 26 and is mounted so as not to make electrical contact with the main bar 10.

FIG. 10 shows a perspective view of the distribution board with the upper branch breaker 2 removed. Specifically, the main breaker 1, three main bars 10 (10R, 10S, 10T), the current sensor unit 20, the branch breaker 2, etc. The perspective view which looked at the distribution board which assembled | attached from diagonally upward is shown. Moreover, FIG. 11 has shown the B section enlarged view. The foremost main bar 10R is a neutral phase main bar, the intermediate and deepest main bars 10S, 10T are voltage phase main bars, and a branch bar 10b with respect to the main bars 10S, 10T constituting the voltage phase. Is formed, and the branch current is measured by the current sensor unit 20.
Then, by installing the communication measurement unit 5 at a predetermined site, the information input connector 61 is connected to the connector 25, and at the same time, the sites indicated by Q1, Q2, and Q3 of the three main bars 10 are the communication measurement unit 5. Are inserted into and fitted into the three recesses 62, and electrical connection is made.

In this way, the communication measuring unit 5 that calculates power consumption based on the branch current information is directly installed from the main bar 10 by being installed at a predetermined location, so that the power can be connected with a simple assembly operation. No additional wiring is required for power supply.
Further, since the communication measurement unit 5 is connected to the current sensor unit 20 by being installed at a predetermined site, the communication measurement unit 5 and the current sensor unit 20 are connected simultaneously with the connection of the power supply. Therefore, no separate connection work is required, and no wiring between the communication measurement unit 5 and the current sensor unit 20 is required.

  In addition, although the said embodiment demonstrated the distribution board used for a single-phase three-wire circuit, it is applicable also to the distribution board used for a single-phase two-wire circuit and a three-phase three circuit, and single-phase 2 Since there are two main bars for the wire circuit, two recesses 62 may be formed in the communication measurement unit 5.

  1 .... Main breaker, 2 .... Branch breaker, 5 .... Communication measurement unit, 10 .... Main bar, 20 .... Current sensor unit, 21 ... Current sensor board, 22 .... Sensor connection board, 23 ... Current Sensor, 24 ... Connector, 56 ... External communication IF, 61 ... Information input connector (connector), 62 ... Recess, 62a ... Terminal fitting (power supply terminal).

Claims (2)

A main breaker and a plurality of branch breakers arranged on at least one side of both sides of the main bar disposed on the secondary side of the main breaker, and a primary terminal of the branch breaker A distribution board for connecting the main bar to the main bar and branching the electric circuit from the main bar,
A plurality of current sensors for measuring the current flowing through each of the branch breakers, and a current sensor unit for measuring individual branch currents;
A communication measuring unit that is installed at a predetermined part adjacent to the branch breaker and calculates and outputs power consumption based on current information detected by the current sensor;
The communication measurement unit has a plurality of recesses that fit into the main bar when installed at the predetermined site, and a terminal fitting that contacts the main bar fitted into the recess is disposed in the recess,
The terminal fitting constitutes a power terminal, and power is supplied to the communication measurement unit by an installation operation, and a measurement voltage conversion unit provided in the communication measurement unit obtains voltage information of the main bar. And generating voltage data for power calculation . The current sensor unit and the communication measurement unit include a connector for directly connecting to each other,
The connector of the communication measurement unit is provided in a portion adjacent to the recess,
The distribution board according to claim 1, wherein the connectors are connected by an installation operation of the communication measurement unit.

Images