JP6594020B2 - Distribution board - Google Patents

Description

  The present invention relates to a distribution board. More specifically, the present invention relates to a distribution board having a function of measuring a current flowing through a branch breaker.

  As a means for measuring the current flowing through a plurality of branch breakers arranged in a distribution board, a technique for detecting current by installing a current sensor on the primary side or secondary side of each branch breaker (Patent Document 1), A technique (Patent Document 2) is disclosed in which a plurality of current sensors embedded with an amorphous core are formed on the same printed circuit board, and currents of a plurality of loads are detected along the longitudinal direction of the printed circuit board.

  However, in the technique of Patent Document 1, a current sensor is installed for each branch breaker, wiring work is performed, and a sensor unit that generates detection data based on the detection output of each current sensor is connected to each current sensor. Since wiring work to connect is necessary, there is a problem that wiring work is troublesome.

  In the technique of Patent Document 2, in addition to the current sensor in which the amorphous core is embedded, a sensor unit that generates detection data based on the detection output of each current sensor may be formed on the printed circuit board. Although the above-described problem of the cited document 1 can be avoided, a plurality of current sensors and sensor units on the same printed circuit board, and a measurement control unit that collects detection data of each sensor unit and outputs it as detection information Since the transmission path for connecting the sensor unit is formed, the printed circuit board has to be enlarged, and the distribution board on which the printed circuit board is mounted inevitably increases in size.

JP-A-6-165320 JP-A-8-240619

  An object of the present invention is to reduce the size of a distribution board in a distribution board that saves complicated wiring work by mounting a printed circuit board on which a current sensor is formed as a means for measuring a current flowing through a branch breaker. It is to provide a technology that can be realized together.

The distribution board of the present invention, which has been made to solve the above problems, is a distribution board in which a plurality of branch breakers are connected to the secondary side of the main breaker via a bus bar. A current detection board on which a current sensor to be measured is formed and a measurement board provided with a processing circuit for processing the output of the current detection board are provided as independent boards, and the bus bar has a plurality of spacers between them. And at least one of the plurality of bus bars is formed with a plurality of branch bars connected to primary terminals of the plurality of branch breakers, and the current The detection board is arranged perpendicular to the bus bar through the branch bar through the hole formed in the current sensor, and the current detection board is arranged in parallel to the bus bar. And it is characterized in that it is plugged into measuring board.

According to a second aspect of the invention, the distribution board according to claim 1, further comprising a mount for mounting the branch breakers, place the measuring substrate below with stand said mounting, said current detection substrate, the branch It is arranged on the secondary side of the breaker.

According to a third aspect of the present invention, in the distribution board according to the first aspect, the current detection board includes a plurality of current detection boards, and each current detection board includes one current sensor, and the plurality of current detection boards are provided. It is characterized by being connected to a single measurement board.

  The distribution board according to the present invention is a distribution board in which a plurality of branch breakers are connected to the secondary side of the main breaker via a bus bar, and a current sensor for measuring a current flowing through each branch breaker is formed. Since the detection board is provided, the wiring work can be simplified as compared with the conventional technique in which the current sensor is connected to each branch breaker. Further, the distribution board according to the present invention has a structure in which the current detection board and the measurement board including the processing circuit for processing the output of the current detection board are provided as independent boards, respectively, and therefore on the same board. In addition, the substrate can be made more compact than the conventional technology in which the current sensor and its processing circuit are formed, and the distribution board on which the substrate is mounted can also be made smaller.

It is a schematic layout of the internal equipment of a distribution board. It is attachment structure explanatory drawing of a bus-bar. It is a perspective view explaining the structure of attachment of a branch breaker. It is explanatory drawing of an electric current detection board | substrate. It is sectional drawing explaining the attachment structure of a branch breaker. It is a perspective view explaining the attachment structure of a current detection board | substrate seeing a measurement board | substrate from the downward direction. It is a perspective view explaining the connection structure of an electric current detection board | substrate and a plug part. It is explanatory drawing of other embodiment.

  Preferred embodiments of the present invention are shown below.

(Embodiment 1)
As shown in FIG. 1, the distribution board according to the present embodiment includes an internal unit including a main breaker 1 and a plurality of branch breakers 2.

  Bus bars 3a, 3b, 3c are connected to the secondary side terminals of the main breaker 1. In the present embodiment, as shown in FIG. 2, three bus bars 3a, 3b, 3c are stacked and arranged.

  A plurality of branch bars 4 extending toward the primary side terminal of the branch breaker 2 are formed on the bus bars 3b and 3c. The branch bar 4 is connected to the primary side terminal of the branch breaker 2. The bus bars 3b and 3c that form the branch bar 4 have a structure that can be used by reversing the front and back, and the same member is reversed and used in common. The uppermost bus bar 3a is formed in a size that covers the branch bar 4 formed on the middle bus bar 3b and the lower bus bar 3c.

  As shown in FIG. 2, the bus bars 3 a, 3 b and 3 c are fixed to the bar support 5, and the ends of the bus bars 3 a, 3 b and 3 c are supported by a bar holder 50. Between each bus bar, a spacer 6 that supports the bus bar with a space between the bus bar is arranged.

  The branch breaker 2 is attached to the mounting base 7 as shown in FIG. When connecting the primary side terminal of the branch breaker 2 and the branch bar 4, slide in the direction of the bus bars 3 a, 3 b, 3 c and insert the branch bar 4 into the primary side terminal of the branch breaker 2 and fix it. To do.

  As shown in FIG. 2, the mounting base 7 has mounting portions 8 and 9 for mounting the branch breaker 2 on both sides of the bus bars 3a, 3b and 3c.

  The attachment portion 8 and the attachment portion 9 are connected to each other by a connecting portion (hereinafter referred to as a recess 10) formed so as to be recessed from the attachment portions 8 and 9. The concave portion 10 is formed in a concave shape in order to ensure insulation from the bus bar 3c. In the present embodiment, a bar support mounting part 11 for mounting the bar support 5 is formed in the recess 10.

  On the primary side of each branch breaker 2, a current detection board 12 for measuring the current flowing through each branch breaker 2 is arranged as shown in FIG. That is, the current detection board 12 is disposed on the branch bar 4 and disposed on the primary side of the branch breaker 2.

  As shown in FIG. 4, the current detection board 12 has a current sensor 13 disposed on the board, and the whole board is covered with a case 14. Here, the type of the current sensor is not particularly limited. For example, it is preferable that the current sensor is formed integrally with the substrate using CT or a Rogowski coil.

  In the present invention, a measurement board 15 that includes a processing circuit that processes the output of the current detection board 12 and generates detection data is provided as a board independent of the current detection board 12. Compared with the prior art in which a current sensor and its processing circuit are formed, the size of a single board is suppressed, the degree of freedom of board arrangement is increased, and the distribution board is miniaturized. Then, as shown in FIG. 5, the measurement board 15 is arranged in parallel below the stacked bus bars 3 a, 3 b, and 3 c and is arranged perpendicular to the current detection board 12. In addition, the measurement board | substrate 15 is formed so that it may be accommodated in the recessed part 10 of the mounting base 7, and it is formed so that the attachment of the branch breaker 2 may not be influenced.

  The measurement board 15 is wired to a measurement control unit (a unit that collects detection data generated by the measurement board and outputs it as detection information) arranged outside the distribution board. By arranging the measurement board 15 in parallel below the bus bars 3a, 3b, and 3c, when the distribution board is viewed from above, the measurement board 15 is not exposed and the wiring is connected to the measurement board 15 and the power distribution board. Since it is limited to connecting the measurement control unit outside the panel, it is possible to make the inside of the distribution board a clean landscape.

  As shown in FIG. 6, a plug portion 16 connected to the current detection substrate 12 is formed at the end of the measurement substrate 15. In the present embodiment, the end portion of the measurement substrate 15 is processed into a concavo-convex shape, the plug portions 16 are provided in the concave portions and the convex portions, respectively, and the current detection substrates 12 are arranged in a staggered manner. By arranging the current detection boards 12 in a staggered manner while partially overlapping, a compact design using a narrow branch breaker is possible, compared to the case where the current detection boards 12 are arranged in a horizontal row without overlapping. .

  As shown in FIG. 7, the current detection substrate 12 and the plug portion 16 are connected by penetrating the branch bar 4 through the hole 17 formed in the current detection substrate 12.

  As shown in FIG. 4, the hole 17 is formed so as to penetrate the center of the current sensor 13. As described above, in this embodiment, the branch bars 4 are formed on the bus bars 3b and 3c, and the branch bars 4 formed on any of the bus bars are passed through the hole portions 17 to detect current. Do. In the current sensor 13 of the present embodiment, the branch bar 4 passes through the central hole 17 of the current sensor 13, but depending on the type of the current sensor 13, the hole 17 is formed in a notch shape. You may make the notch-shaped hole 17 penetrate the branch bar 4. In the case 14, a hole 18 having a function of preventing misalignment by penetrating the other branch bar 4 is formed. However, the hole 18 may be omitted.

  As shown in FIG. 4, the current measurement boards 12 for L1 and L2 are formed, and a plug part 19 connected to the plug part 16 of the measurement board 15 is formed at the lower end of each current measurement board 12. In the upper and lower ends, plug hole 20 is formed. It is necessary to use two types of current detection boards 12 for L1 and L2, but the case 14 can also be used.

(Embodiment 2)
In the first embodiment, the example in which the current detection board 12 is arranged on the primary side of each branch breaker 2 has been described. However, the current detection board 12 is arranged on the secondary side of the branch breaker 2 as shown in FIG. You can also.

  In the present embodiment, the measurement board 15 is disposed below the branch breaker 2 and perpendicular to the current detection board 12.

  In the first embodiment, all the current detection boards 12 are connected to one measurement board 15, whereas in the present embodiment, the L1 branches arranged on the left and right sides of the bus bars 3a, 3b, 3c, respectively. Separate measurement boards 15 are arranged below the breaker row and the L2 branch breaker row, and a current detection board 12 for measuring the current flowing through the L1 branch breaker row is connected to one measurement board 15. The other measurement board 15 is connected to a current detection board 12 for measuring the current flowing through the L2 branch breaker row.

DESCRIPTION OF SYMBOLS 1 Main breaker 2 Branch breaker 3a, 3b, 3c Bus bar 4 Branch bar 5 Bar support stand 6 Spacer 7 Mounting base 8, 9 Mounting part 10 Recess 11 Bar support base mounting part 12 Current detection board 13 Current sensor 14 Case 15 Measurement board 16 Plug part 17 Hole part 18 Hole part 19 Plug part 20 Plug part extraction hole 50 Bar holder

Claims (3)

In a distribution board in which multiple branch breakers are connected to the secondary side of the main breaker via the bus bar,
A current detection board that forms a current sensor that measures the current flowing through each branch breaker and a measurement board that includes a processing circuit that processes the output of the current detection board are provided as independent boards, respectively.
A plurality of the bus bars are arranged with a spacer interposed therebetween, and at least one of the plurality of bus bars is connected to a primary terminal of the plurality of branch breakers. A plurality of branch bars are formed, and the current detection substrate is disposed perpendicular to the bus bar through the branch bar through a hole formed in the current sensor,
And these current detection boards are plug-connected to the said measurement board arrange | positioned in parallel with respect to a bus-bar, The distribution board characterized by the above-mentioned.   The mounting board for attaching the branch breaker is provided, the measurement board is arranged below the mounting board, and the current detection board is arranged on the secondary side of the branch breaker. Distribution board.   The plurality of current detection boards are provided, and each current detection board is formed with one current sensor, and the plurality of current detection boards are connected to a single measurement board. Distribution board.