JP6635364B2 - Collection box - Google Patents

Description

  The present invention relates to a current collection box, and more particularly, to a current collection box that collects power input from a plurality of power sources and outputs the collected power to the outside.

  BACKGROUND ART Conventionally, there has been proposed a wiring device in which a commercial power supply breaker to which a commercial power supply is connected and a connection breaker to which a distributed power supply is connected are housed in a box (for example, see Patent Document 1). In this wiring device, three strip-shaped conductive bars are attached inside the box so as to be parallel to each other. The commercial power supply breaker and the interconnection breaker are electrically connected to the three conductive bars, and the commercial power supply breaker and the interconnection breaker are arranged so as to be arranged in the longitudinal direction of the conductive bar. I have. In the case of single-phase three-wire AC100V / 200V wiring, the wiring device includes three conductive bars connected to two voltage wires and a neutral wire, respectively.

JP 2003-37940 A

  In the wiring device described in Patent Literature 1, three conductive bars are arranged so as to be parallel to each other. However, it is necessary to make it difficult for an operator to touch the conductive bar where current is flowing during maintenance or the like. Have been.

  The present invention has been made in view of the above problems, and has as its object to provide a current collection box that is hard to touch a conductive member through which a current flows.

The current collection box of the present invention includes a plurality of input breakers to which AC power is input from a corresponding AC power supply, an output breaker, a secondary terminal included in each of the plurality of input breakers, and the output terminal. A conductive bar electrically connected between a primary terminal of the breaker and a box-shaped front-opening box, in which the plurality of input breakers, the output breaker, and the conductive bar are housed. And a conductive bar electrically connected to a secondary terminal of each of the plurality of input breakers, and a primary terminal of the output breaker. The conductive member is electrically connected to the L1-phase conductive member electrically connected to the L1-phase voltage line of the single-phase three-wire wiring, and to the L2-phase voltage line of the single-phase three-wire wiring. L2 phase conductive member electrically connected , And a neutral conductive member electrically connected to the neutral line of the single-phase three-wire wiring, the conductive bar, the for L1 phase voltage line L1 phase of the single-phase three-wire wiring A first conductive bar connected via a conductive member; a second conductive bar connected to the L2-phase voltage line of the single-phase three-wire wiring via the L2-phase conductive member; A third conductive bar connected to a neutral wire of the wiring via the neutral wire conductive member , wherein when the inside of the cabinet is viewed from the opening, the third conductive bar is connected to the first conductive bar. A part of the conductive bar and a part of the second conductive bar respectively overlap with each other, and the third conductive bar is arranged at a position closer to the opening than the first conductive bar and the second conductive bar. Preferably, the conductive bar is disposed inside the cabinet.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a current collection box that is difficult to touch a conductive member through which current flows.

It is a schematic block diagram of the whole system using the current collection box of an embodiment. It is a front view of the cabinet which showed the collection box of embodiment, and the front door was removed. It is an external appearance perspective view of the 1st conductive member with which the current collection box of embodiment is provided. FIG. 3 shows a current collection box of the embodiment, and is a cross-sectional view along line A1-A1 in FIG. 2. FIG. 3 shows the current collection box of the embodiment, and is a cross-sectional view taken along B1-B1 in FIG. 2. It is a side view of the 2nd conductive member with which the current collection box of an embodiment is provided. It is a front view of the cabinet which showed the modification of the current collection box of embodiment, and the front door was removed. FIG. 9 shows a modification of the current collection box of the embodiment, and is a cross-sectional view along line C1-C1 in FIG. It is a top view in the state before the cover used for the modification of the current collection box of an embodiment is bent.

  Hereinafter, the current collection box according to the present embodiment will be described with reference to the drawings. However, the configuration described below is merely an example of the present invention. The present invention is not limited to the following embodiments, and various changes can be made according to the design and the like without departing from the technical idea according to the present invention.

  FIG. 1 is a system configuration diagram of a solar power generation system using the current collection box 1 of the present embodiment. FIG. 2 is a front view of the current collection box 1 with the front door removed. In the following description, up, down, left, and right in the state where the current collection box 1 is installed in a construction place (for example, an outer wall of a building) will be described as up, down, left, and right. That is, the X-axis direction in FIG. 2 will be described as the front-rear direction, the Y-axis direction in FIG. 2 will be described as the left-right direction, and the Z-axis direction in FIG. 2 will be described as the front-back direction. It is not the purpose.

  As shown in FIG. 1, the current collection box 1 of the present embodiment includes a plurality of input breakers 10, output breakers 20, and conductive members 30. In this embodiment, the conductive member 30 includes a first conductive member 40 that is directly connected to the input breaker 10, and a second conductive member 50 that electrically connects the first conductive member 40 and the output breaker 20. (See FIG. 2).

  The current collection box 1 of this embodiment is used for single-phase three-wire AC100V / 200V wiring. As shown in FIGS. 2 and 3, the first conductive member 40 is electrically connected to the L1-phase voltage line of the single-phase three-wire wiring, and is electrically connected to the L2-phase voltage line. It is composed of a conductive bar 42 to be connected and a conductive bar 43 to be electrically connected to a neutral wire. Further, the second conductive member 50 includes a first conductive bar 51, a second conductive bar 52, and a third conductive bar 53, as shown in FIG. The first conductive bar (hereinafter, referred to as a conductive bar) 51 is electrically connected to the voltage line of the L1 phase of the single-phase three-wire system. The second conductive bar (hereinafter, referred to as a conductive bar) 52 is electrically connected to the L2-phase voltage line of the single-phase three-wire system. The third conductive bar (hereinafter, referred to as a conductive bar) 53 is electrically connected to a neutral wire of the single-phase three-wire wiring. In the present embodiment, the conductive bars 41 and 51 are connected to the L1 phase and the conductive bars 42 and 52 are connected to the L2 phase. However, the conductive bars 41 and 51 are connected to the L2 phase and the conductive bars 42 and 52 are connected. It may be connected to the L1 phase. The conductive member 30 may be a conductive member in which the first conductive member 40 and the second conductive member 50 are integrated. That is, the conductive bar 41 and the conductive bar 51, the conductive bar 42 and the conductive bar 52, and the conductive bar 43 and the conductive bar 53 may be integrated.

  In the current collection box 1 of the present embodiment, a distributed power supply 100 is connected to each of a plurality of input breakers 10. The distributed power supply 100 is a distributed power supply that outputs AC power, and includes, for example, a solar cell module 101 and a power conditioner 102 that converts DC power generated by the solar cell module 101 into AC power. The DC power generated by the solar cell module 101 is converted into AC power by the power conditioner 102 and input to the primary terminal 11 of the corresponding input breaker 10. Each input breaker 10 outputs the AC power input to the primary terminal 11 to the primary terminal 21 of the output breaker 20 via the conductive member 30 connected to the secondary terminal 12. The output breaker 20 outputs the AC power input to the primary terminal 21 to, for example, an AC power system via an electric wire 201 connected to the secondary terminal 22.

  As described above, the current collection box 1 of the present embodiment aggregates AC power input from the plurality of distributed power supplies 100 via the input breaker 10 and outputs the AC power to the outside via the output breaker 20. used. As a result, the plurality of distributed power supplies 100 connected to the current collection box 1 are connected to the system power supply, and the power generated by the plurality of distributed power supplies 100 connected to the current collection box 1 is sold to the power company. Can be charged. In the present embodiment, five input breakers 10 are housed in the current collection box 1; however, the number of input breakers 10 is not limited to five, and can be appropriately changed according to the design or the like.

  Hereinafter, each component of the current collection box 1 will be described.

  Each of the plurality of input breakers 10 is electrically connected to the primary terminal 11 (see FIG. 2) to which the electric wire 103 from the distributed power supply 100 is electrically connected, and to the conductive member 30 (the first conductive member 40). And a plug-in type secondary terminal 12 (see FIG. 4) connected to the terminal. Each of the plurality of input breakers 10 further has a handle 13 and a case 14. In FIG. 2, the illustration of the electric wires 103 connected to the primary terminals 11 of some of the input breakers 10 is omitted.

  The case 14 is a resin molded product of a synthetic resin having an insulating property, and is formed in a box shape having a rectangular shape in plan view.

  A contact electrically connected between the primary terminal 11 and the secondary terminal 12 is housed inside the case 14, and the contact is turned on / off in accordance with the operation of the handle 13. . The input breaker 10 is, for example, a circuit breaker having an overcurrent protection function for protecting a circuit when an overcurrent (a short-circuit current, an overload current, or the like) flows. The input breaker 10 may be a leakage breaker having a protection function against leakage current in addition to the overcurrent protection function.

  At one end of the case 14 in the longitudinal direction, three-pole screw terminals constituting the primary terminal 11 are arranged side by side in the short direction. Three insertion grooves 15 are provided on the end face on the other end side in the longitudinal direction of the case 14 at a substantially constant pitch in the front-rear direction (the height direction of the case 14). Inside the case 14, a plug-in type secondary terminal 12 is housed at a position corresponding to each of the three insertion grooves 15. When the plate-shaped or rod-shaped first conductive member 40 is inserted into each of the three insertion grooves 15, the secondary terminal 12 sandwiches the first conductive member 40 from both sides, so that the secondary terminal 12 is It is electrically connected to one conductive member 40.

  The output breaker 20 has a primary terminal 21 to which the conductive member 30 (second conductive member 50) is electrically connected, and a secondary terminal 22 to which the output electric wire 201 is electrically connected. . The output breaker 20 further includes a handle 23 and a case 24. The secondary terminal 22 of the output breaker 20 is connected to a system power supply via, for example, a watt hour meter for power sale.

  The case 24 is a resin molded product of a synthetic resin having an insulating property, and is formed in a box shape having a rectangular shape in plan view.

  A contact electrically connected between the primary terminal 21 and the secondary terminal 22 is housed inside the case 24, and the contact is turned on / off according to the operation of the handle 23. . The output breaker 20 is, for example, a circuit breaker having an overcurrent protection function. The output breaker 20 may be a leakage breaker having a protection function against leakage current in addition to the overcurrent protection function.

  On one end side in the longitudinal direction of the case 24 (upper side in the construction state), three-pole screw terminals constituting the primary terminal 21 are arranged side by side in the lateral direction. In the present embodiment, the three-pole screw terminals constituting the primary terminal 21 are arranged at substantially the same position in the front-rear direction. At the other end of the case 24 in the longitudinal direction (the lower side in the construction state), three-pole screw terminals constituting the secondary terminal 22 are arranged side by side in the lateral direction.

  The cabinet 60 has a vertically long rectangular plate-shaped back plate 61 and side walls protruding forward from the peripheral edge of the back plate 61, and is formed in a box shape having an opening 68 provided on substantially the entire front surface. A front door is attached to the front of the cabinet 60 so as to be openable and closable. When the front door is closed, an opening 68 on the front of the cabinet 60 is closed. Of the side walls of the cabinet 60, through holes for passing electric wires are provided on left and right sides of the side wall on the lower side in a state where the cabinet 60 is installed in the construction place.

  On the back plate 61 of the cabinet 60, two vertical rails 62 made of a long metal plate are attached to both left and right sides of the back plate 61, respectively. The two vertical bars 62 are attached to the back plate 61 such that the longitudinal direction of the vertical bars 62 is substantially parallel to the longitudinal direction of the back plate 61 (the vertical direction in the construction state).

  Two horizontal rails 63 are attached above the two vertical rails 62 so as to bridge between the two vertical rails 62. The two horizontal rails 63 are arranged at an interval above and below, and a support plate 64 is fixed so as to be bridged between the two horizontal rails 63. The support plate 64 is a rectangular metal plate having a larger horizontal dimension than a vertical dimension, and has a horizontal cross section such that the longitudinal direction of the vertical cross section 62 is substantially parallel to the short direction of the support plate 64. 63. A mounting base 65 to which the plurality of input breakers 10 are mounted is fixed to the support plate 64.

  A support plate 66 is attached to the lower side of the two vertical bars 62 so as to bridge between the two vertical bars 62. An attachment plate 67 to which the output breaker 20 is attached is fixed to the support plate 66 by a method such as screwing. In the present embodiment, the output breaker 20 is mounted on the right side of the mounting plate 67, and one input breaker 10 is mounted in an empty space on the left side of the mounting plate 67. A conversion adapter 80 having a connection terminal that is electrically connected to the secondary terminal 12 of the input breaker 10 is mounted on the input breaker 10 mounted on the mounting plate 67. The conversion adapter 80 is provided with a three-pole screw type terminal block 81. The screw terminal of each pole provided in the screw type terminal block 81 is electrically connected to the primary terminal 11 of the input breaker 10 connected to the conversion adapter 80.

  On the right side of the mounting base 65, a first mounting space 651 is provided in which two input breakers 10 can be mounted side by side in the vertical direction. On the left side of the mounting base 65, a second mounting space 652 is provided in which another two input breakers 10 can be mounted side by side in the vertical direction. The first conductive member 40 is mounted on the mounting base 65 between the first mounting space 651 and the second mounting space 652. Note that the number of input breakers 10 attached to the mounting base 65 is not limited to four, and the size of the mounting base 65 may be changed according to the number of input breakers 10.

  As shown in FIGS. 2 and 3, the first conductive member 40 includes a conductive bar 41 connected to the L1 phase, a conductive bar 42 connected to the L2 phase, and a conductive bar 43 connected to the neutral wire. have.

  The conductive bar 41 is a metal plate formed in an elongated rectangular shape in plan view, and has through holes 414 at both ends in the longitudinal direction of the conductive bar 41. The conductive bar 41 is placed on the front surface of the mounting base 65 so that the longitudinal direction is substantially parallel to the short direction of the support plate 64 and is located on the right side of the conductive bar 43, and the screw 71 passed through the through hole 414 is provided. It is fixed to the mounting base 65 by screwing it into the screw hole of the mounting base 65. A plurality of projections 413 (six in FIG. 3) are provided on the left edge of the conductive bar 41 by bending a portion projecting from the left edge of the conductive bar 41 at a substantially right angle. Each protrusion 413 is provided with connection terminals 411 and 412. The connection terminal 411 (first connection portion) protrudes rightward from the protrusion 413 and is inserted into the insertion groove 15 of the input breaker 10 attached to the first attachment space 651. The connection terminal 411 is provided at a position at which the connection terminal 411 can be inserted into the insertion groove 15 located at the rearmost side (closer to the mounting base 65) among the three insertion grooves 15 provided in the input breaker 10. 15 is electrically connected to the secondary terminal 12 disposed so as to face the reference numeral 15. The connection terminal 412 (second connection portion) protrudes leftward from the protrusion 413 and is inserted into the insertion groove 15 of the input breaker 10 mounted in the second mounting space 652. The connection terminal 412 is provided at a height position that can be inserted into the insertion groove 15 located at the center in the front-rear direction among the three insertion grooves 15 provided in the input breaker 10, and is arranged so as to face the insertion groove 15. Electrically connected to the secondary terminal 12.

  The conductive bar 42 is a metal plate formed in an elongated rectangular shape in plan view, and has through holes 424 at both ends in the longitudinal direction of the conductive bar 42. The conductive bar 42 is placed on the front surface of the mounting base 65 such that the longitudinal direction is substantially parallel to the short direction of the support plate 64 and is located on the left side of the conductive bar 43, and the screw 71 passed through the through hole 424 is provided. It is fixed to the mounting base 65 by screwing it into the screw hole of the mounting base 65. The right side edge of the conductive bar 42 is provided with a plurality of projecting portions 413 (six in FIG. 3) projecting forward by bending a portion projecting from the left side edge of the conductive bar 41 substantially at right angles. Each protrusion 423 is provided with connection terminals 421 and 422. The connection terminal 421 (first connection portion) protrudes rightward from the protrusion 423 and is inserted into the insertion groove 15 of the input breaker 10 attached to the first attachment space 651. The connection terminal 421 is provided at a height position that can be inserted into the insertion groove 15 located at the center in the front-rear direction among the three insertion grooves 15 provided in the input breaker 10, and is arranged so as to face the insertion groove 15. Electrically connected to the secondary terminal 12. The connection terminal 422 (second connection portion) protrudes leftward from the protrusion 423 and is inserted into the insertion groove 15 of the input breaker 10 mounted in the second mounting space 652. The connection terminal 422 is provided at a height position at which the connection terminal 422 can be inserted into the insertion groove 15 located at the rearmost side (the side closer to the mounting base 65) among the three insertion grooves 15 provided in the input breaker 10. 15 is electrically connected to the secondary terminal 12 disposed so as to face the reference numeral 15.

  The conductive bar 43 is a metal plate formed in an elongated rectangular shape in a plan view, and has an intermediate portion 432 such that both end portions 431 in the longitudinal direction are located behind the intermediate portion 432 in the longitudinal direction. And the end 431 is bent in a Z-shape. Through holes 433 are provided at both ends 431 on both sides of the conductive bar 43. At the center in the left-right direction of the mounting base 65, columnar portions 653 protruding forward are provided on both upper and lower sides (see FIG. 4). The conductive bar 43 is screwed into the screw hole of the columnar portion 653 with the screw 71 passed through the through hole 433 in a state where the end portion 431 is placed on the tip end surface of the columnar portion 653, so that the upper and lower both sides of the columnar portion 653 are formed. It is fixed to the mounting base 65 so as to be bridged therebetween. The intermediate portion 432 of the conductive bar 43 is located at the most front position (farthest from the mounting base 65) among the three insertion grooves 15 of the input breaker 10 mounted in the first mounting space 651 and the second mounting space 652. ) It is arranged at a height position where it can be inserted into the insertion groove 15. Therefore, the right end of the intermediate portion 432 of the conductive bar 43 is inserted into the insertion groove 15 of the input breaker 10 attached to the first attachment space 651, and the left end of the intermediate portion 432 is attached to the second attachment space 652. It is inserted into the insertion groove 15 of the input breaker 10. Here, the right end of the intermediate portion 432 inserted into the insertion groove 15 of the input breaker 10 attached to the first attachment space 651 is the first connection portion. The left end of the intermediate portion 432 inserted into the insertion groove 15 of the input breaker 10 attached to the second attachment space 652 becomes the second connection portion.

  Therefore, in the input breaker 10 mounted in the first mounting space 651, the connection terminal 411 of the conductive bar 41 is inserted into the rearmost insertion groove 15, and the conductive bar 42 is inserted into the insertion groove 15 at an intermediate position in the front-rear direction. Is inserted. In the input breaker 10 mounted in the second mounting space 652, the connection terminal 422 of the conductive bar 42 is inserted into the rearmost insertion groove 15, and the conductive bar 41 is inserted into the insertion groove 15 at an intermediate position in the front-rear direction. The connection terminal 412 is inserted. In the input breaker 10 mounted in each of the first mounting space 651 and the second mounting space 652, the intermediate portion 432 of the conductive bar 43 is inserted into the frontmost insertion groove 15. In this embodiment, since AC power of 200 V is input from the distributed power supply 100 to the current collection box 1, the input breaker 10 connected to the distributed power supply 100 has the primary circuit corresponding to the L1 phase and the L2 phase. AC power of 200 V AC is input to the side terminal 11. Accordingly, AC power of 200 V AC is input from the distributed power supply 100 to the L1-phase conductive bar 41 and the L2-phase conductive bar 42 via the input breaker 10. The input breaker 10 mounted on the first mounting space 651 is mounted on the mounting base 65 such that the longitudinal direction of the case 14 is substantially parallel to the left-right direction and the primary terminal 11 is disposed on the right side. It is attached. The input breaker 10 mounted on the second mounting space 652 is mounted on the mounting base 65 such that the longitudinal direction of the case 14 is substantially parallel to the left-right direction and the primary terminal 11 is disposed on the left side. It is attached.

  Next, the second conductive member 50 will be described with reference to FIGS. The second conductive member 50 has a conductive bar 51 connected to the L1 phase, a conductive bar 52 connected to the L2 phase, and a conductive bar 53 connected to the neutral wire.

  The conductive bar 51 is formed by processing a metal plate, and is formed by bending a main portion 512 having a Z-shape in plan view and one end (lower end) of the main portion 512 into a crank shape. A terminal portion 511 provided with a slight step between itself and the portion 512. The terminal portion 511 provided on one end side of the main portion 512 is connected to the L1 phase primary side terminal 21 (the rightmost screw terminal in the present embodiment) of the output breaker 20. The other end of the main portion 512 is placed on one end (lower end) of the conductive bar 41 disposed on the right side of the columnar portion 653 on the front surface of the mounting base 65, and the conductive bar 41 is provided with a screw 71. It is screw-fixed to the mounting base 65 together with 41 (see FIG. 4). As a result, the L1-phase conductive bar 41 and the conductive bar 51 are electrically connected.

  The conductive bar 52 is formed by processing a metal plate, and is formed by bending a main portion 521 having a Z-shape in plan view and one end (upper end) of the main portion 521 into a crank shape. A terminal portion 522 provided with a slight step between itself and the terminal portion 521. The other end (lower end) of the main portion 521 is connected to the L2-phase primary terminal 21 (the leftmost screw terminal in the present embodiment) of the output breaker 20. The terminal portion 522 provided on one end side of the main portion 521 is disposed on one end (lower end) of the L2-phase conductive bar 42 disposed on the left side of the columnar portion 653 on the front surface of the mounting base 65, and is screwed. It is screw-fixed to the mounting base 65 together with the conductive bar 42 using 71 (see FIG. 4). Thus, the L2-phase conductive bar 42 and the conductive bar 52 are electrically connected.

  In the present embodiment, there is a slight difference in height between the front surfaces of the conductive bars 41 and 42 attached to the attachment base 65 and the front surfaces of the primary terminals 21 of the output breaker 20. In order to absorb the height difference, the conductive bars 51 and 52 are each bent at an intermediate portion in a crank shape (see FIGS. 5 and 6).

  The conductive bar 53 is formed by processing a metal plate, and has a first terminal portion 531, a main portion 532, and a second terminal portion 533. The main part 532 is formed in a Z-shape in plan view. A terminal 531 is provided on one end (lower end) of the main portion 532, and a terminal 533 is provided on the other end (upper end) of the main portion 532. The terminal portion 531 is formed by bending a portion protruding from one end side of the main portion 532 into a crank shape. The terminal portion 531 and the main portion 532 are substantially parallel to each other, and the terminal portion 531 and the main portion 532 are connected to each other. A step is provided between them. This terminal portion 531 is connected to the primary terminal 21 (the central screw terminal in this embodiment) for the neutral wire of the output breaker 20. The terminal portion 533 is formed by bending a portion protruding from the other end side of the main portion 532 into a crank shape. The terminal portion 533 and the main portion 532 are substantially parallel to each other, and the terminal portion 533 and the main portion 532 are formed. And a step is provided between them. The terminal portion 533 is disposed so as to overlap with the conductive bar 43 for neutral wire disposed on the front side of the columnar portion 653, and is fixed to the mounting base 65 together with the conductive bar 43 using the screw 71 (FIG. 4). And FIG. 5). Thereby, the conductive bar 43 for neutral wire and the conductive bar 53 are electrically connected. In the present embodiment, in the construction state, the front surface of the columnar portion 653 is located on the front side of the front surface of the primary terminal 21 of the output breaker 20, so that the terminal portion 533 is located forward of the terminal portion 531. Both ends of the conductive bar 53 are bent in a crank shape so as to be arranged.

  As shown in FIG. 2, when the inside of the cabinet 60 is viewed from the opening 68, the conductive bar 53 connected to the neutral wire overlaps with a part of the conductive bar 51 and a part of the conductive bar 52, respectively. In addition, conductive bars 51 to 53 are housed inside cabinet 60. Also, as shown in FIGS. 5 and 6, conductive bars 51 to 53 are arranged inside cabinet 60 such that conductive bar 53 is arranged closer to opening 68 than conductive bars 51 and 52. .

  In this embodiment, since AC power of 200 V is input from the distributed power supply 100 to the input breaker 10, AC power of AC 200 V is input to the conductive bar 51 of the L1 phase and the conductive bar 52 of the L2 phase, and No current flows through the conductive bar 53 connected to the wire. The conductive bar 53 is disposed at a position closer to the opening 68 than the conductive bars 51 and 52, and a part of the conductive bars 51 and 52 is covered by the conductive bar 53. Therefore, the conductive bar 51 connected to the voltage line is provided. , 52 are hard to touch, and safety is improved.

  In addition, the conductive bars 51 to 53 are connected to the neutral bar so that the conductive bars 51 to 53 are located between the conductive bar 51 connected to the L1 phase and the conductive bar 52 connected to the L2 phase. 60 (see FIG. 2). In the present embodiment, when viewed from the front, the conductive bar 51 connected to the L1 phase and the conductive bar 52 connected to the L2 phase are disposed on the left and right of the conductive bar 53 connected to the neutral wire. . Since the conductive bar 53 disposed between the conductive bars 51 and 52 is disposed at a position closer to the opening 68 than the conductive bars 51 and 52, the conductive bars 53 and 52 located on both sides of the conductive bar 53 are connected. It becomes hard to touch and safety is improved.

  The secondary terminal 12 of the input breaker 10 attached to the attachment plate 67 is electrically connected to the screw terminals of each pole of the screw terminal block 81 of the conversion adapter 80. One end of the electric wire 82 is connected to the L1-phase screw terminal among the three-pole screw terminals of the screw type terminal block 81, and the other end of the electric wire 82 is connected to the conductive bar 51. One end of the electric wire 83 is connected to the L2-phase screw terminal among the three-pole screw terminals of the screw type terminal block 81, and the other end of the electric wire 83 is connected to the conductive bar 52. Among the three-pole screw terminals of the screw terminal block 81, one end of the electric wire 84 is connected to the neutral pole screw terminal, and the other end of the electric wire 84 is connected to the conductive bar 53. Therefore, the secondary terminal 12 of the input breaker 10 attached to the attachment plate 67 is also electrically connected to the conductive bars 51 to 53 via the conversion adapter 80 and the electric wires 82 to 84.

  Therefore, the secondary terminals 12 of the plurality of input breakers 10 are electrically connected to the primary terminals 21 of the output breakers 20 via the conductive members 30. Therefore, the AC power input from the plurality of distributed power supplies 100 to the input breaker 10 can be aggregated and output from the output breaker 20 to the outside.

  7 and 8, the current collecting box 1 further includes a cover 90 that partially covers each of the conductive bars 51 to 53 when the inside of the cabinet 60 is viewed from the opening 68. You may.

  The cover 90 is, for example, a molded product of a synthetic resin, and as shown in FIG. 9, integrally includes a main portion 91 and a pair of leg portions 92. The main portion 91 is formed in a plan view shape such that a substantially semicircular protrusion protrudes from the long side of the horizontally long rectangular portion. Leg portions 92 are connected to both ends of the rectangular portion of the main portion 91 in the longitudinal direction. The leg portion 92 is bent at a boundary portion with the main portion 91 so as to project in a direction substantially orthogonal to the main portion 91 (see FIG. 8). By bending the leg portion 92 in a direction substantially perpendicular to the main portion 91, the cover 90 is formed in a U-shape when viewed from below, and the claw 93 at the tip of the leg portion 92 is coupled to the mounting base 65, for example. Then, the cover 90 is attached to the attachment base 65. When the inside of the cabinet 60 is viewed from the opening 68 as shown in FIG. 7, the conductive bars 51, 52, and 53 are partially covered by the cover 90 attached to the mounting base 65, respectively. 51, 52, and 53 are difficult to touch, and safety is improved. When the inside of the cabinet 60 is viewed from the opening 68, the conductive bars 51, 52, and 53 may be entirely covered by a cover 90 attached to the mounting base 65, further improving safety.

  As described above, the current collection box 1 of the present embodiment includes the plurality of input breakers 10, the output breakers 20, the conductive bars (second conductive members 50), and the cabinet 60. AC power is input to each of the plurality of input breakers 10 from the corresponding AC power supply (distributed power supply 100). The conductive bar (second conductive member 50) is electrically connected between the secondary terminal 12 of each of the plurality of input breakers 10 and the primary terminal 21 of the output breaker 20. The cabinet 60 has a box shape with an open front surface and accommodates therein a plurality of input breakers 10, output breakers 20, and conductive bars. The conductive bar includes a first conductive bar (conductive bar 51) connected to the L1-phase voltage line of the single-phase three-wire wiring, and a second conductive bar connected to the L2-phase voltage line of the single-phase three-wire wiring. A bar (conductive bar 52) and a third conductive bar (conductive bar 53) connected to the neutral wire of the single-phase three-wire wiring are included. When the inside of the cabinet 60 is viewed from the opening 68, the conductive bars are arranged inside the cabinet 60 such that the third conductive bar overlaps a part of the first conductive bar and a part of the second conductive bar, respectively. You. Further, when the inside of the cabinet 60 is viewed from the opening 68, the conductive bar is positioned in the cabinet 60 such that the third conductive bar is located closer to the opening 68 than the first conductive bar and the second conductive bar. Located inside.

  Since the third conductive bar is disposed closer to the opening 68 than the first conductive bar and the second conductive bar, and the third conductive bar covers a part of the first conductive bar and a part of the second conductive bar, It becomes difficult to touch the first conductive bar and the second conductive bar connected to the voltage line, and safety is improved.

  When the inside of the cabinet 60 is viewed from the opening 68, the third conductive bar (conductive bar 53) is positioned between the first conductive bar (conductive bar 51) and the second conductive bar (conductive bar 52). In addition, a conductive bar (second conductive member 50) may be arranged inside cabinet 60.

  Since the third conductive bar located between the first conductive bar and the second conductive bar is located closer to the opening 68 than the first conductive bar and the second conductive bar, the third conductive bar is connected to the voltage line. It becomes difficult to touch the first conductive bar and the second conductive bar, and the safety is further improved.

  When the inside of the cabinet 60 is viewed from the opening 68, each of the first conductive bar (conductive bar 51), the second conductive bar (conductive bar 52), and the third conductive bar (conductive bar 53) is partially or A cover 90 for covering the whole may be further provided.

  Since the cover 90 covers each of the first conductive bar, the second conductive bar, and the third conductive bar, it becomes difficult to touch the first conductive bar and the second conductive bar connected to the voltage line, thereby further improving safety. I do.

  In the above embodiment, the distributed power supply 100 is a power supply that converts DC power generated by the solar cell module 101 into AC power and outputs the AC power. It is not limited to a power supply having The distributed power supply 100 may be a power supply that outputs power generated by, for example, a fuel cell or a wind power generation system.

DESCRIPTION OF SYMBOLS 1 Current collection box 10 Input breaker 11 Primary terminal 12 Secondary terminal 20 Output breaker 21 Primary terminal 22 Secondary terminal 30 Conductive member 40 First conductive member 50 Second conductive member (conductive bar)
51 conductive bar (first conductive bar)
52 conductive bar (second conductive bar)
53 conductive bar (third conductive bar)
60 Cabinet 68 Opening 90 Cover

Claims (3)

A plurality of input breakers to which AC power is input from corresponding AC power supplies,
An output breaker,
A conductive bar electrically connected between a secondary terminal of each of the plurality of input breakers and a primary terminal of the output breaker;
A cabinet having a box shape with an open front and containing the plurality of input breakers, the output breakers, and the conductive bars therein,
The conductive bar is electrically connected between a conductive member electrically connected to a secondary terminal of each of the plurality of input breakers, and a primary terminal of the output breaker,
The conductive member is electrically connected to the L1 phase conductive member electrically connected to the L1 phase voltage line of the single-phase three-wire wiring, and is electrically connected to the L2 phase voltage line of the single-phase three-wire wiring. An L2-phase conductive member, and a neutral conductive member electrically connected to a neutral wire of the single-phase three-wire wiring;
The conductive bar, a first conductive bar connected via the L1 phase conductive member to a voltage line of the L1 phase of the single-phase three-wire wiring, the voltage line L2 phase single-phase three-wire wiring A second conductive bar connected via the L2-phase conductive member, and a third conductive bar connected to the neutral conductor of the single-phase three-wire wiring via the neutral conductive member ,
When the inside of the cabinet is viewed from the opening, the third conductive bar overlaps with a part of the first conductive bar and a part of the second conductive bar, respectively, and the third conductive bar, A current collection box, wherein the conductive bar is disposed inside the cabinet so as to be disposed closer to the opening than the first conductive bar and the second conductive bar.   When the inside of the cabinet is viewed from the opening, the conductive bar is disposed inside the cabinet such that the third conductive bar is located between the first conductive bar and the second conductive bar. The current collection box according to claim 1, wherein:   When the inside of the cabinet is viewed from the opening, a cover that partially or entirely covers each of the first conductive bar, the second conductive bar, and the third conductive bar is further provided. The current collection box according to claim 1.

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