JP5255923B2 - Power distribution equipment - Google Patents

Description

  The present invention relates to a power distribution device in which a primary circuit and a secondary circuit are connected by a breaker, and particularly to a power distribution device in which an electronic device that requires a constant power source is connected to the secondary circuit side. .

  2. Description of the Related Art A power distribution apparatus for branching and wiring power lines drawn from outdoors is configured by connecting a breaker between a primary circuit to which power is supplied and a secondary circuit to supply power. As a breaker for configuring such a power distribution device, a main breaker that receives power supplied from the outside to the dwelling unit on the primary side, and a power source that is supplied from the secondary side of the main breaker on the primary side are 2 There is a branch breaker that outputs to the next side. A distribution board provided with one main breaker and a plurality of branch breakers has been generally used as a power distribution device that can be branched into a plurality of wires.

  In such a power distribution apparatus, the function of the breaker decreases with time due to aging of electrodes connected to the primary circuit and the secondary circuit or welding due to inrush current. By replacing the breaker with a new one, the function of the power distribution device itself is maintained. Also, as one of the power distribution devices, a light distribution board that distributes power to lighting equipment is used. To enable remote control of lighting equipment, a remote control breaker is installed in this light distribution board. May be.

The remote control breaker has a lifetime that deteriorates its function because contact welding or the like occurs due to an inrush current due to its opening and closing. Thus, it is necessary to confirm an appropriate replacement time for the remote control breaker having a lifetime. As a remote control breaker that can display an appropriate replacement time, a remote breaker that stores a predetermined number of times of opening / closing as a lifetime value and compares it with the current number of times of opening / closing has been proposed (see Patent Document 1).
Japanese Patent Laid-Open No. 04-084400

  As described above, the breaker provided in the power distribution apparatus is replaced to maintain the function of the power distribution apparatus or change the model. When the breaker is replaced, the breaker is replaced after the power supply to the primary side of the power distribution apparatus is stopped in order to prevent an accident such as an electric shock to an operator who performs the replacement work. That is, the power supply is stopped at a higher level than the primary side of the target breaker, and the breaker is replaced without power supply to the target breaker.

  However, for power distribution devices that supply power to electronic devices such as servers that require constant power, it is necessary to replace the breaker without stopping power supply to electronic devices that require constant power. is there. That is, when replacing a breaker that supplies power from the secondary side to an electronic device that requires constant power, the primary side and secondary side of the breaker to be replaced remain electrically connected. In this state, it is required to replace the target breaker.

  In view of such problems, the present invention stops power supply to an electronic device when replacing a breaker connected to a secondary circuit that supplies power to an electronic device that requires constant power supply. The purpose is to propose a power distribution device without the above.

In order to achieve the above object, a power distribution device according to the present invention includes a primary electric circuit connected to a power supply-side primary electric wire, a secondary electric circuit connected to a load-side secondary electric wire, A breaker that electrically contacts and separates between the secondary circuit and the secondary circuit, and the breaker is detachably connected to the primary circuit and the secondary circuit, In a power distribution device that constantly supplies power from a secondary-side wire, the breaker is connected in parallel between the primary circuit and the secondary circuit, and between the primary circuit and the secondary circuit by the breaker. Comprising a bypass unit that energizes between the primary electric circuit and the secondary electric circuit when the energization of is interrupted , each of the primary electric circuit and the secondary electric circuit is configured by a plate-like conductive bar, The breaker is configured to connect each of the primary circuit and the secondary circuit. It characterized by having a primary terminals and secondary terminals of the plug-in structure that engages the conductive bar formed.

  At this time, the bypass unit may be configured by a switch connected between the primary electric circuit and the secondary electric circuit.

When the bypass unit is configured by the switch, the switch also includes a primary side terminal and a secondary side of a plug-in structure that engage with conductive bars that configure the primary circuit and the secondary circuit, respectively. It may have a terminal.

  Furthermore, the conductive bars constituting each of the primary electric circuit and the secondary electric circuit are installed in parallel, and the breaker is in a direction intersecting the installation direction of the conductive bar, and the primary electric circuit and the 2 It is good also as what is straddled between the following electrical circuits. Thereby, it is not necessary to branch the electric circuit configuration for connecting the bypass unit with the primary electric circuit and the secondary electric circuit from the first electric circuit and the second electric circuit. At this time, when the bypass unit is configured by the switch, the switch is also laid between the primary circuit and the secondary circuit in a direction intersecting the installation direction of the conductive bar. It is good also as a thing.

  The breaker may include a detection unit that detects the replacement time of the device itself, and a notification unit that notifies when the detection unit detects the replacement time. The breaker may further include a control unit that shuts off the device and energizes the bypass circuit when the detection unit detects the replacement time.

  According to the present invention, since the bypass unit is provided, the breaker can be replaced without stopping the power supply to the secondary side electric wire by the bypass unit. When the breaker is shut off, the bypass unit is energized, so that the breaker can be shut off for replacement, and the replacement work can be performed safely.

<Basic configuration>
The basic configuration of the power distribution apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a basic configuration of a power distribution apparatus according to the present invention.

  As shown in FIG. 1, the power distribution device 1 of the present invention is connected to a primary side terminal block 11 connected to a primary side electric wire 21 that receives power supply from an external power source 2 and to the primary side terminal block 11. The primary electric circuit 12, the secondary terminal block 13 connected to the secondary electric wire 31 for supplying power to the load 3, the secondary electric circuit 14 connected to the secondary terminal block 13, and the primary electric circuit And a bypass unit 16 connected in parallel with the breaker 15 between the primary circuit 12 and the secondary circuit 14.

  Since the power distribution device 1 receives the power supplied from the external power source 2 via the primary side electric wire 21 at the primary side terminal block 11, the power source from the external power source 2 is connected to the breaker 15 via the primary electric circuit 12. Is supplied to the primary side. When the breaker 15 is turned on (closed) and the primary circuit 12 and the secondary circuit 14 are electrically connected via the breaker 13, the power from the external power source 2 is supplied to the breaker 15. To be supplied to the secondary electric circuit 14. As a result, the power from the external power source 2 is supplied to the load 3 through the secondary side electric wire 31 connected to the secondary electric circuit 14 via the secondary side terminal 13.

  Thus, in the normal time when the breaker 15 is turned ON, since the primary circuit 12 and the secondary circuit 14 are energized by the breaker 15, the bypass unit 16 is turned OFF (opened) and the energization by the bypass unit 16 is performed. Is in a blocked state. The breaker 15 is turned off when the amount of current when the primary circuit 12 and the secondary circuit 14 are energized exceeds a predetermined value, and the circuit between the primary circuit 12 and the secondary circuit 14 is cut off. To do. The operation of the breaker 15 prevents a current exceeding a predetermined value from flowing through the secondary side electric wire 31.

  In this power distribution apparatus 1, when replacing the breaker 15, first, the bypass unit 16 is turned ON, and the primary circuit 12 and the secondary circuit 14 are energized also by the bypass unit 16. Thereafter, the breaker 15 is turned off, the power supply by the breaker 15 is cut off, the breaker 15 installed in the power distribution apparatus 1 is removed, and then replaced with a new breaker 15 that is turned off. Then, after the replacement breaker 15 is turned on and energization between the primary circuit 12 and the secondary circuit 14 by the new breaker 15 is started, the bypass unit 16 is turned off and the energization by the bypass unit 16 is interrupted.

  As described above, when the power supply by the breaker 15 is interrupted when the breaker 15 is replaced, the power supply between the primary circuit 12 and the secondary circuit 14 can be maintained by causing the bypass unit 16 to function. As a result, since the breaker 15 can be switched off and replaced, safety in the replacement work of the breaker 15 can be ensured and, at the same time, even if a load 3 that needs to be constantly supplied with power is connected, The supply will not be stopped. The bypass unit 16 may be installed between the primary electric circuit 12 and the secondary electric circuit 14 at the time of replacement so as to energize the primary electric circuit 12 and the secondary electric circuit 14, or a breaker or the like may be used. It may be configured by an initial switch.

  In the following embodiments, the basic configuration of FIG. 1 is provided as a common configuration, and a configuration in which a switch is used as a bypass unit will be described as an example. Furthermore, replacement of the breaker in the power distribution device of each of the following embodiments is performed according to the above-described procedure. Therefore, in each of the following embodiments, description will be made centering on the constituent parts of each power distribution device.

<First Embodiment>
A first embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic diagram illustrating a configuration of the power distribution apparatus according to the present embodiment. FIG. 3 is an external perspective view showing the configuration of the breaker used in the power distribution apparatus in the configuration of FIG. FIG. 4 is a diagram showing the relationship between the terminals and the electric circuit in the breaker of FIG. FIG. 4 is a view of the breaker of FIG. 3 as viewed from the installation surface side (back surface side), and the conductor portion configured inside the main body is illustrated by a broken line.

  The power distribution apparatus 100 of the present embodiment shown in FIG. 2 includes a primary terminal block composed of three terminals connected to three primary electric wires 21 to which power is supplied from a single-phase three-wire external power supply 2. 11, three primary side conductive bars 121 to 123 connected to three primary side electric wires 21 in the primary side terminal block 11, and three secondary sides for supplying power to the load 3 side A secondary terminal block 13 composed of three terminals connected to the electric wire 31, and three secondary conductive bars 141 to 143 connected to the three secondary electric wires 31 in the secondary terminal block 13; Breaker 151 connected to each of primary side conductive bars 121-123 and secondary side conductive bars 141-143, and three bypass primarys connected to each of three primary side conductive bars 121-123 Electrical paths 161-163 and three secondary conductive bars 141-14 Includes three bypass for a secondary path 164-166 of which are connected respectively, and the switch 167 to be connected to the respective bypass the primary path 161 to 163 and bypass the secondary path 164-166, the.

  When configured in this way, as shown in FIG. 2, the three primary conductive bars 121 to 123 and the three secondary conductive bars 141 to 143 are parallel to each other on the plane, and 1 Secondary conductive bars 141 to 143 are installed at positions where the respective installation directions of secondary conductive bars 121 to 123 are extended. A breaker 151 is installed at a position sandwiched between the primary energization bars 121 to 123 and the secondary energization bars 141 to 143. Therefore, when the breaker 151 is ON, the primary side conductive bars 121 to 123 are energized to the secondary side conductive bars 141 to 143 through the breaker 151, respectively.

  Further, the bypass primary electric circuits 161 to 163 are electrically connected to the primary side conductive bars 121 to 123, respectively, and are connected to the primary side of the bypass switch 167 so as to be connected to the primary side. It is installed so as to cross the side conductive bars 121-123. At this time, when the bypass primary electric paths 161 to 163 are formed of conductive bars, they are spatially installed with respect to the primary conductive bars 121 to 123. That is, the installation positions of the bypass primary electric paths 161 to 163 are set to the upper side or the lower side (the upper side or the lower side in FIG. 2) with respect to the installation surface of the primary conductive bars 121 to 123.

  The bypass primary electric circuit 161 is electrically connected only to the primary conductive bar 121. In addition, an insulator is provided between the bypass primary electrical circuit 161 and the primary conductive bars 122 and 123 at the intersection of the bypass primary electrical circuit 161 and the primary conductive bars 122 and 123. As a result, energization is prevented between the bypass primary electrical circuit 161 and the primary conductive bars 122 and 123, and the bypass primary electrical circuit 161 can be fixed. The bypass primary circuit 162 is electrically connected to the primary-side energization bar 122 and insulated at the intersection with the primary-side energization bars 121 and 123. The bypass primary circuit 163 is It is electrically connected to the primary energizing bar 123 and insulated at the intersections with the primary energizing bars 121 and 122.

  The bypass secondary electrical paths 164 to 166 and the secondary conductive bars 141 to 143 are installed so as to have the same relationship as the bypass primary electrical paths 161 to 163 and the primary conductive bars 121 to 123. . That is, when the bypass secondary electrical paths 164 to 166 are formed of conductive bars, the installation positions of the bypass secondary electrical paths 164 to 166 are above or below the installation surface of the secondary conductive bars 141 to 143. It is considered as a side. The bypass secondary electrical path 164 energizes only the secondary conductive bar 141, the bypass secondary electrical path 165 energizes only the secondary conductive bar 142, and the bypass secondary electrical path 166 establishes the secondary conductive bar. In order to energize only 143, the intersections of bypass secondary electric paths 164 to 166 and secondary conductive bars 141 to 143 are physically connected by an insulator or a conductor.

  As described above, the bypass primary electric paths 161 to 163 and the bypass secondary electric paths 164 to 166 intersect the primary side conductive bars 121 to 123 and the secondary side conductive bars 141 to 143, respectively, to the breaker 151. The shape is detoured. The bypass primary electric circuits 161 to 163 and the bypass secondary electric circuits 164 to 166 are respectively detoured with respect to the breaker 151, and the primary side conductive bars 121 to 123 and the secondary side conductive bars 141 to 143 are Installed in parallel.

  At the detour position with respect to the breaker 151, the bypass secondary electric circuits 164 to 166 are installed at positions extended in the installation directions of the bypass primary electric circuits 161 to 163, respectively. And the switch 167 is installed in the position pinched | interposed by the primary electric circuit 161-163 for bypass and the secondary electric circuit 164-166 for bypass. Therefore, when the switch 167 is ON, the bypass primary electric paths 161 to 163 are energized to the bypass secondary electric paths 164 to 166 via the switches 167, respectively. That is, in the detour position with respect to the breaker 151, the relationship between the primary electric paths 161 to 163 for bypass, the switch 167, and the secondary electric paths 164 to 166 for bypass is the primary conductive bars 121 to 123, the breaker 151, and the secondary It becomes the relationship similar to the side conductive bars 141-143.

  With this configuration, the bypass unit 16 in the basic configuration illustrated in FIG. 1 includes the bypass primary electrical paths 161 to 163, the bypass secondary electrical paths 164 to 166, and the switch 167. Therefore, in the normal time, the switch 167 is turned off and the primary side and the secondary side are energized by the breaker 151. When replacing the breaker 151, first, the switch 167 is turned on, and then the existing breaker 151 is turned off and removed. And after attaching the new breaker 151 of the OFF state and turning it on, the switch 167 is turned off.

  The switch 167 may be a new breaker. At this time, for example, before replacing the existing breaker 151 at the time of replacement, the new breaker to be replaced is attached to the position of the switch 167 in an OFF state. Then, after this new breaker is turned on, the existing breaker 151 is turned off and removed. Thereby, the newly installed breaker attached to the position of the switch 167 functions as a breaker in the power distribution apparatus 100 until it is replaced next time. That is, when the breaker is replaced next time, the breaker attached at the position of the switch 167 is removed, and a new breaker is attached at the position of the breaker 151.

  Furthermore, the structure of the breaker 151 is demonstrated with reference to FIG.3 and FIG.4. As shown in FIG. 3, the primary conductive bars 121 to 123 are installed in parallel to each other, and the ends thereof are located at positions facing the respective ends of the primary conductive bars 121 to 123. The secondary side conductive bars 141 to 143 are installed. Accordingly, the secondary conductive bars 141 to 143 are installed in parallel with each other because they are installed at positions on the extended lines in the extending direction of the primary conductive bars 121 to 123. And the breaker 151 is installed between the edge part of the primary side conductive bars 121-123 and the edge part of the secondary side conductive bars 141-143.

  As shown in FIGS. 3 and 4, the breaker 151 includes a primary terminal 501 having plug-in terminals 511 to 513 into which ends of the primary side conductive bars 121 to 123 are inserted, and a secondary side conductive bar. A secondary terminal 502 having plug-in terminals 521 to 523 into which respective ends of 141 to 143 are inserted, and a handle 503 for operating energization / cutoff of the primary side and the secondary side are provided. Further, the primary side terminal 501 is provided with contact conductors 514 to 516 (shown by broken lines in FIG. 4) which are primary side fixed contacts electrically connected to the plug-in terminals 511 to 513, respectively. The terminal 502 includes contact conductors 524 to 526 (indicated by broken lines in FIG. 4) that are secondary fixed contacts electrically connected to the plug-in terminals 521 to 523, respectively.

  In the breaker 151 main body, the primary side terminal 501 and the secondary side terminal 502 are installed at end positions that are symmetrical with respect to the handle 503. Therefore, when the plug-in terminals 511 to 513 into which the primary conductive bars 121 to 123 are inserted are provided at one end of the breaker 151 main body, the secondary side is connected to the end opposite to this end. Plug-in terminals 521 to 523 into which the conductive bars 141 to 143 are inserted are provided. Then, the movable section (not shown) is interlocked by the handle 503, and electrical contact / separation between each of the contact conductors 514 to 516 and each of the contact conductors 524 to 526 is determined. Moreover, the breaker 151 main body measures the amount of current when the primary side and the secondary side are energized, and disconnects the connection by the movable piece when the amount of current exceeds a predetermined value. A control unit (not shown) is provided.

  The structure of the plug-in terminals 511 to 513 and 521 to 523 in the breaker 151 will be briefly described as a representative of the plug-in terminal 511. The plug-in terminal 511 has a groove shape opened to the installation surface side where the primary conductive bar 121 is installed, and is perpendicular to the installation surface of the primary conductive bar 121 (hereinafter referred to as “height”). It becomes a groove shape excavated in the “direction”). Further, the plug-in terminal 511 is also opened on the end surface of the breaker 151 main body, which is a surface perpendicular to the extending direction of the primary conductive bar 121, and has a groove shape extending to the secondary terminal 502 side. Further, as shown in FIG. 3, when the primary conductive bar 121 is longer in the height direction than the installation width, the primary conductive bar 121 and the groove constituting the plug-in terminal 511 are also connected to the primary conductive bar 121. Since the shape is the same, the depth is deeper than the width.

  The width of the groove constituting the plug-in terminal 511 becomes narrower from the opening surface toward the bottom in the depth direction (the same direction as the “height direction”). That is, on the opening surface, the width of the plug-in terminal 511 is made wider than the width of the primary conductive bar 121 so that the primary conductive bar 121 can be easily inserted. Further, when the width of the groove constituting the plug-in terminal 511 is narrowed toward the position advanced in the depth direction from the opening surface, the width is made narrower than the width of the primary conductive bar 121. Thus, not only can the primary conductive bar 121 inserted into the plug-in terminal 511 be locked, but also the contact area between the groove constituting the plug-in terminal 511 and the primary conductive bar 121 can be increased. Can do. In the plug-in terminal 511, the region whose width in the depth direction is narrow may be a part of the region other than the opening surface.

  In addition, the plug-in terminal 511 has a structure in which a conductive material such as metal is exposed on the surface of the groove that constitutes the plug-in terminal 511, and the exposed conductive material is electrically connected to the contact conductor 514. Note that, as a configuration in which the groove constituting the plug-in terminal 511 is provided in the contact conductor 514, the material constituting the contact conductor 514 may be exposed on the surface of the groove constituting the plug-in terminal 511. With this configuration, when the primary conductive bar 121 is inserted into the plug-in terminal 511, the contact conductor 514 and the primary conductive bar 121 are electrically connected.

  For each of the plug-in terminals 512, 513, 521 to 523, each of the primary conductive bars 122 and 123 and the secondary conductive bars 141 to 143 has a structure similar to that of the plug-in terminal 511 described above. When inserted, they are electrically connected to each other. When comprised in this way, while the breaker 151 main body is comprised with an insulating material, while the plug-in terminals 511-513 are mutually insulated, the plug-in terminals 521-523 are mutually insulated. Further, the contact conductors 514 to 516 and 524 to 526 are also installed at positions separated from each other by the breaker 151 main body so as to be insulated from each other.

  With the configuration including the plug-in terminals 511 to 513 and 521 to 523 having such a configuration, the breaker 151 has the primary side conductive bars 121 to 123 and the secondary side conductive bars installed as shown in FIG. 141 to 143 can be inserted into the plug-in terminals 511 to 513 and 521 to 523 to be locked. Thereby, replacement | exchange of the breaker 151 in the power distribution apparatus 100 is attained only by attachment or detachment with respect to the primary side conductive bars 121-123 and the secondary side conductive bars 141-143, and the replacement | exchange operation | work becomes safe.

  As described above, the switch 167 is also shown in FIGS. 3 and 4 as in the case of the breaker 151 when the bypass primary electrical circuits 161 to 163 and the bypass secondary electrical circuits 164 to 166 are formed of conductive bars. It is good also as a structure like a structure. That is, in the switch 167, the primary side terminal and the secondary side terminal connected to the bypass primary electrical paths 161 to 163 and the bypass secondary electrical paths 164 to 166, which are conductive bars, are terminals having a plug-in structure. A connection part is provided. Thereby, also about the switch 167, a terminal part is touched at the time of attachment or detachment to the primary electric circuit 161-163 for bypass and the secondary electric circuit 164-166 for bypass similarly to the breaker 151 comprised as FIG.3 and FIG.4. There is no need.

<Second Embodiment>
A second embodiment of the present invention will be described below with reference to the drawings. FIG. 5 is a schematic diagram showing the configuration of the power distribution apparatus of the present embodiment. FIG. 6 is an external perspective view showing the configuration of the breaker used in the power distribution apparatus in the configuration of FIG. FIG. 7 is a diagram showing the relationship between the terminals and the electric circuit in the breaker of FIG. 5 to 7, portions used for the same purpose as those of the configurations of FIGS. 2 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 7 is a view of the breaker of FIG. 6 as viewed from the installation surface side (rear surface side), and the conductor portion configured inside the main body is illustrated by a broken line.

  The power distribution apparatus 101 of the present embodiment shown in FIG. 5 excludes the bypass primary electric circuits 161 to 163 and the bypass secondary electric circuits 164 to 166 from the configuration of the power distribution apparatus 100 (see FIG. 1) of the first embodiment. In addition to the breaker 151 and the switch 167, the breaker 152 and the switch 168 are provided between the primary conductive bars 121 to 123 and the secondary conductive bars 141 to 143. . That is, the bypass unit 16 in the basic configuration shown in FIG.

  The primary conductive bars 121 to 123 and the secondary conductive bars 141 to 143 are installed so as to be parallel to each other. However, unlike the power distribution apparatus 100 of the first embodiment, the primary conductive bars 121 are arranged. Secondary side conductive bars 141 to 143 are installed at positions different from the extending directions of the respective installation directions of .about.123. And each of the breaker 152 and the switch 168 is installed in the direction which cross | intersects the primary side conductive bars 121-123 and the secondary side conductive bars 141-143, and thereby the primary side conductive bars 121-123 and 2 The secondary conductive bars 141 to 143 are juxtaposed along a direction parallel to the conductive bars 141 to 143.

  That is, the primary side conductive bars 121 to 123 and the secondary side conductive bars 141 to 143 are arranged side by side in a direction perpendicular to the direction in which the primary side conductive bars 141 to 143 are extended, and the extension direction is in each direction. Installed to overlap each other. And the breaker 152 and the switch 168 are juxtaposed in the position where the primary side conductive bars 121-123 and the secondary side conductive bars 141-143 overlap with each extending direction. Accordingly, there is no need to configure a bypassed circuit by the bypass primary circuits 161 to 163 and the bypass secondary circuits 164 to 166 in the power distribution apparatus 100 (see FIG. 1) of the first embodiment. Therefore, the three-dimensional structure when the bypass primary electric circuits 161 to 163 and the bypass secondary electric circuits 164 to 166 are provided becomes unnecessary, and the configuration of the power distribution apparatus 101 can be simplified as compared with the power distribution apparatus 100.

  Further, the configuration of the breaker 152 will be described with reference to FIGS. As shown in FIG. 6, the primary side conductive bars 121 to 123 are installed in parallel to each other, and the secondary side conductive bars 141 to 143 are primary at positions away from the primary side conductive bars 121 to 123. It is installed in parallel with the side conductive bars 121-123. And the breaker 152 is installed in the direction which cross | intersects the direction where the primary side conductive bars 121-123 and the secondary side conductive bars 141-143 are extended, and the primary side conductive bars 121-123 and the secondary side It extends between the conductive bars 141-143.

  As shown in FIG. 6, the breaker 152 has a plug-in structure for the primary side terminals 501 and the secondary terminals that have the same positional relationship as the breaker 151 (see FIGS. 3 and 4) in the first embodiment. A side terminal 502 and a handle 503 are provided. On the other hand, since the extending direction of the primary side conductive bars 121 to 123 and the secondary side conductive bars 141 to 143 intersects with the installation direction of the breaker 152, the plugs of the primary side terminal 501 and the secondary side terminal 502 in the breaker 152 are plugged. The in structure is different from the breaker 151. Therefore, in the following, the structure of the primary side terminal 501 and the secondary side terminal 502 in the breaker 152 will be described in detail.

  Similarly to the breaker 151, the breaker 152 includes contact conductors 514 to 516 whose primary side terminals 501 are insulated from each other, and secondary side terminals 502 include contact conductors 524 to 526 that are insulated from each other. The primary side terminal 501 includes plug-in terminals 531 to 533 electrically connected to the contact conductors 514 to 516, respectively. The plug-in terminal 531 is insulated from the contact conductors 515 and 516, the plug-in terminal 532 is insulated from the contact conductors 514 and 516, and the plug-in terminal 533 is insulated from the contact conductors 514 and 515. . Similarly, the secondary terminal 502 includes plug-in terminals 541 to 543 electrically connected to the contact conductors 524 to 526. The plug-in terminal 541 is insulated from the contact conductors 525 and 526, the plug-in terminal 542 is insulated from the contact conductors 524 and 526, and the plug-in terminal 543 is insulated from the contact conductors 524 and 525. .

  The plug-in terminals 531 to 533 and 541 to 543 are similar to the plug-in terminals 511 to 513, 521 to 523 (see FIG. 3), respectively, and the primary side conductive bars 121 to 123 and the secondary side conductive bars 141 to 143. The groove shape is excavated in the height direction from each installation surface. Also, in order to lock when the primary conductive bars 121 to 123 and the secondary conductive bars 141 to 143 are inserted, the height direction thereof is the same as the plug-in terminals 511 to 513 and 521 to 523. The width with respect to is also configured to become narrower from the opening surface toward the bottom.

  The plug-in terminals 531 to 533, 541 to 543 are the two end surfaces of the breaker 152 main body which is a surface perpendicular to the direction in which the primary conductive bars 121 to 123 and the secondary conductive bars 141 to 143 extend. It is formed so as to cross. Therefore, the two end surfaces of the breaker 152 main body traversed by the plug-in terminals 531 to 533, 541 to 543 are provided with openings by grooves formed by the plug-in terminals 531 to 533, 541 to 543. Further, the contact conductors 514 to 516 are installed side by side in the direction in which the plug-in terminals 531 to 533 extend, and the contact conductors 524 to 526 in the direction in which the plug-in terminals 541 to 543 extend. Are installed side by side.

  Therefore, all the plug-in terminals 531 to 533 are installed so as to straddle a plurality of the contact conductors 514 to 516, and similarly, all the plug-in terminals 541 to 543 are connected to the contact conductors 524 to 524. It will be installed so as to straddle a plurality of 526. At this time, as described above, the plug-in terminals 531 to 533 are electrically connected to only one of the contact conductors 514 to 516, and the plug-in terminals 541 to 543 are connected to the contact conductors 524 to 526, respectively. It is electrically connected to only one of them. In addition, each of the plug-in terminals 531 to 533 and each of the contact conductors 514 to 516 are electrically connected, and each of the plug-in terminals 541 to 543 and each of the contact conductors 524 to 526 is connected. A region to be electrically connected is a region indicated by hatching in FIG.

  That is, the surface of the groove constituting the plug-in terminal 531 is such that only the region where the contact conductor 514 is installed is exposed with a conductive material, and the other region is covered with an insulating material. A structure that is electrically connected only to the contact conductor 514 is adopted. Similarly, the surface of the groove forming the plug-in terminal 532 exposes only the region where the contact conductor 515 is installed with a conductive material, and the surface of the groove forming the plug-in terminal 533 is the contact conductor. Only the region where 516 is installed is exposed with a conductive material. Similarly, the plug-in terminals 541 to 543 are also exposed to the conductive material only at the positions of the contact conductors 524 to 526 to which the respective plug-in terminals 541 to 543 are electrically connected. The plug-in terminals 532, 533, 541 to 543 cover regions other than the regions exposed with the conductive material with an insulating material.

  Since the breaker 152 includes the plug-in terminals 531 to 533 and 541 to 543 having such a configuration, the plug-in terminals 531 to 533 and 541 to 543 are electrically connected to the contact conductors 514 to 516 and 524 to 526, respectively. Connected to. Therefore, the plug-in terminal 531 will be described as a representative. When the primary conductive bar 121 is inserted into the plug-in terminal 531, the contact-side conductor 514 connected to the plug-in terminal 531 is in contact with the primary side. The conductive bar 121 can be electrically connected. Further, since the contact conductors 515 and 516 and the plug-in terminal 531 are insulated, the primary conductive bar 121 and the contact conductors 515 and 516 can be insulated. By configuring in this way, the breaker 152 of the present embodiment can be safely exchanged as with the breaker 151 of the first embodiment.

  In the present embodiment as well, the switch 168 may be configured as shown in FIGS. 6 and 7, similar to the breaker 152, as in the first embodiment. Further, as in the case of replacing the switch 167 as a new breaker in the first embodiment, the switch 168 is not always installed, and instead of the existing breaker 152 at the time of replacement, the switch 168 is replaced. A new breaker may be installed at the installation position.

<Third Embodiment>
A third embodiment of the present invention will be described below with reference to the drawings. FIG. 8 is a block diagram showing the internal configuration of the breaker used in the power distribution apparatus of this embodiment. In addition, the power distribution apparatus of this embodiment has the characteristics in the internal structure of a breaker, and the whole structure of a power distribution apparatus may be either the structure of 1st or 2nd embodiment.

  As shown in FIG. 8, the circuit breaker 153 in the power distribution device according to the present embodiment includes a primary side terminal 501 and a secondary side terminal 502 connected to the primary circuit 12 and the secondary circuit 14, and a primary side terminal. The primary side fixed contact 301 and the secondary side fixed contact 302 connected to the 501 and the secondary side terminal 502, the movable piece 303 interlocked by the handle 503, and energization by the movable piece 303 when an overcurrent occurs. And a controller 304 for blocking. The primary side fixed contact 301 is constituted by the contact molten conductors 514 to 516 of the breakers 151 and 152 (see FIGS. 4 and 6) in the first and second embodiments, and the secondary side fixed contact 302 is It is comprised by the contact molten conductors 524-526 of the breakers 151,152.

  In the breaker 153, the primary electric circuit 12 and the secondary electric circuit 14 are connected to the primary terminal 501 and the secondary terminal 502, respectively. When the movable piece 303 is connected to the primary side fixed contact 301 and the secondary side fixed contact 302 by the handle 503, power from the external power source 1 is supplied to the load 2. At this time, the control unit 304 detects a current value flowing by connecting the primary side fixed contact 301 and the secondary side fixed contact 302, and gives a control signal to the movable piece 303 when an overcurrent is detected. Thus, the energization between the primary side fixed contact 301 and the secondary side fixed contact 302 is interrupted.

  Further, the breaker 153 includes a measuring unit 305 that measures the number of times of opening / closing by the movable piece 303, an elapsed time from the time of manufacture, a memory 306 that stores a reference value that is a replacement time of the own device, and a measured value by the measuring unit 305 And a reference unit stored in the memory 306 to determine whether or not replacement is necessary, and a notification unit 308 that receives a determination result by the detection unit 307 via the control unit 304 and notifies the outside. Prepare. At this time, the measurement unit 305 may detect a physical transition of the handle 503 or the movable section 303 by a position sensor or the like when measuring the number of times of opening / closing by the movable section 303. Further, the measuring unit 305 may measure the capacitance of the capacitor provided in the breaker 153, so that the detection unit 307 may determine the replacement time of the breaker 153.

  When the breaker 153 configured in this way is installed in the power distribution devices 100 and 101 like the breakers 151 and 152 in the first and second embodiments, the handle 503 is operated and the movable section 303 is turned on. Then, measurement by the measurement unit 305 is started. Thus, simultaneously with the start of measurement by the measurement unit 305, the detection unit 307 periodically acquires the measurement value by the measurement unit 305 and compares it with the reference value stored in the memory 306.

  When the measurement value by the measurement unit 305 exceeds the reference value in the memory 306, the detection unit 307 determines that the breaker 153 needs to be replaced and outputs a signal to the control unit 304. That is, when the number of times of opening / closing by the movable section 303 is measured, when the number of times of opening / closing becomes larger than the reference number, and when the elapsed time from the time of manufacture is measured, the elapsed time is the reference. When the capacitor capacity is further measured when the time is longer than the time, it is determined that the breaker 153 needs to be replaced when the difference from the reference value becomes large.

  Thus, when the detection unit 307 outputs a signal for requesting replacement of the breaker 153 to the control unit 304, the control unit 307 gives a control signal to the notification unit 308. Thus, the notification unit 308 performs an output for notifying the outside of the replacement of the breaker 153 by sound, an image, lighting, or the like. That is, when the notification unit 308 is configured by the liquid crystal display 308a as shown in FIG. 9A, the replacement of the breaker 153 can be notified by image display. At this time, the time until the replacement time of the breaker 153 may be displayed on the liquid crystal display 308a. In addition to the replacement of the breaker 153, the state of the breaker 153 may be displayed on the liquid crystal display 308a.

  In addition, when the notification unit 308 is configured by the light emitting diode 308b as shown in FIG. 9B, the replacement of the breaker 153 can be notified by its lighting display or blinking display. At this time, ON / OFF of the breaker 153 can be notified depending on whether or not the light emitting diode 308b is lit, and when the display mode of the light emitting diode 308b changes to blinking, the replacement of the breaker 153 may be notified. Furthermore, when the notification unit 308 is configured by the speaker 308c as shown in FIG. 9C, the replacement of the breaker 153 can be notified by the output of the sound.

<Fourth Embodiment>
A fourth embodiment of the present invention will be described below with reference to the drawings. FIG. 10 is a block diagram showing the internal configuration of the breaker and the switch used in the power distribution apparatus of this embodiment. In addition, the power distribution apparatus of this embodiment has the characteristics in the structure of a breaker and a switch, and the whole structure of a power distribution apparatus may be either the structure of 1st or 2nd embodiment. Further, in the configuration of FIG. 10, parts used for the same purpose as those of the configuration of FIG. 8 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 10, the breaker 154 in the power distribution apparatus according to the present embodiment has a configuration in which a communication unit 401 for communicating with the switch 169 is added to the configuration of the breaker 153 shown in FIG. 8. The switch 169 is connected to the primary terminal 901 and the secondary terminal 902 connected to the primary circuit 12 and the secondary circuit 14, respectively, and to the primary terminal 901 and the secondary terminal 902, respectively. The primary side fixed contact 903 and the secondary side fixed contact 904, the movable piece 905 that electrically contacts and separates the primary side fixed contact 903 and the secondary side fixed contact 904, and ON / OFF by the movable piece 905 The control part 906 which controls OFF, and the communication part 907 which communicates with the communication part 401 of the breaker 154 are provided.

  With this configuration, the breaker 154 can communicate with the switch 169 by connecting the communication unit 401 to the communication unit 907 of the switch 169. Thereby, the power distribution apparatus of this embodiment can turn the own device OFF after the existing breaker 154 that has reached the replacement timing gives an instruction to the switch 169 to turn it ON. On the other hand, after the breaker 154 is replaced, the newly installed breaker 154 can give an instruction to turn off the switch 169 after turning on its own device.

  That is, as in the third embodiment, the breaker 154 is configured such that when the primary fixed contact 301 and the secondary fixed contact 302 are energized by the movable piece 303, the measurement value obtained by the measurement unit 305 and the memory 306 The reference value is periodically compared with the reference value. When the measurement value by the measurement unit 305 exceeds the reference value in the memory 306, the detection unit 307 determines that replacement is necessary and notifies the control unit 304 of it. Upon receiving the notification from the detection unit 307, the control unit 304 gives a control signal to the notification unit 308 to drive the notification unit 308 to notify the outside of the replacement of the breaker 154. At this time, a control signal from the control unit 304 is transmitted to the switch 169 through the communication unit 401.

  In the switch 169 that has received this control signal by the communication unit 907, the control unit 906 gives a control signal to the movable section 905 to recognize that it is time to replace the breaker 154, and the primary fixed contact 903 and The secondary side fixed contact 904 is connected. As a result, the switch 169 is turned ON, and energization of the primary circuit 12 and the secondary circuit 14 by the switch 169 starts. The control unit 906 transmits a notification signal from the communication unit 907 to the breaker 154 in order to notify the breaker 154 that the switch 169 is turned on.

  When receiving the notification signal from the switch 169 by the communication unit 401, the breaker 154 recognizes by the control unit 304 that the switch 169 is turned on. Therefore, the control unit 307 gives a control signal to the movable piece 303 to cut off the energization between the primary side fixed contact 301 and the secondary side fixed contact 302 and turn off the breaker 154. At this time, the notification unit 308 may notify that the breaker 154 is OFF.

  Then, after the existing breaker 154 is removed from the power distribution apparatus, when a new breaker 154 is attached, the handle 503 of the new breaker 154 is operated and turned ON. As a result, the primary side fixed contact 301 and the secondary side fixed contact 302 are energized through the movable piece 303. Thereby, the control unit 304 confirms energization between the primary side fixed contact 301 and the secondary side fixed contact 302, and detects that the new breaker 154 is turned on. And the control part 304 produces | generates the notification signal which shows that the new breaker 154 was set to ON, and transmits to the switch 169 from the communication part 401. FIG. At this time, the notification unit 308 may notify that the breaker 154 is ON.

  When the communication unit 907 receives the notification signal from the breaker 154, the switch 169 is replaced with a new breaker 154, and the control unit 906 recognizes that the breaker 154 is turned on. Therefore, the control unit 906 gives a control signal to the movable piece 905, cuts off the energization between the primary side fixed contact 903 and the secondary side fixed contact 904, and turns off the switch 169. At this time, in the switch 169, the control unit 906 generates a notification signal indicating that the switch 169 is turned off and transmits the notification signal to the breaker 154 from the communication unit 907, so that the breaker 154 is normally exchanged. It is good also as a thing which notifies that it was performed.

  In the third and fourth embodiments, as in the first and second embodiments, the switch that is a part of the bypass unit 16 may be configured by the breakers 153 and 514. In the fourth embodiment, when the breaker 154 that is a part of the bypass unit 16 is configured by the breaker 154, the breaker 154 that is the breaker is the switch 169 described in the fourth embodiment. The operation by.

  In the fourth embodiment, when the breaker 154 is replaced, electrical communication is performed between the breaker 154 and the switch 169 so that the breaker 154 is switched off and the switch 169 is turned on / off. Is performed automatically, but may be performed mechanically. That is, for an existing breaker that is exchange-symmetrical, when the handle is operated and turned on / off by the operator, the switch is turned off / on in conjunction with the handle operation for turning on / off the breaker. At this time, when the breaker is turned off, it is desirable that the switch is turned on at the same time as the handle operation for turning it off is performed, and then the breaker is turned off electrically. Similarly, when the breaker is turned on, it is desirable that the breaker is turned on at the same time as the handle operation to be turned on is performed, and then the switch is electrically turned off.

  In addition, the power distribution apparatus of each embodiment mentioned above is applicable to the distribution board provided with the main breaker and the branch breaker. An example applied to this distribution board will be described based on the basic configuration shown in FIG. As shown in FIG. 11, in the distribution board 103 supplied with power from the external power source 2, the main breaker 15 a connected between the primary side electric circuit 12 and the secondary side electric circuit 14 and the secondary side electric circuit 14 are connected. It is connected between the branching primary circuit 12a that is connected and branched, the branching secondary circuit 14a that is connected to the secondary-side electric wire 31, and the branching primary circuit 12a and the branching secondary circuit 14a. A branch breaker 15b is installed. Moreover, in the primary side terminal block 11, the primary side electric wire 21 and the primary side electric circuit 12 are connected, and the power from the external power source 2 is supplied to the primary side of the main breaker 15a. In the secondary side terminal block 13, the branching secondary electric circuit 14a and the secondary side electric wire 31 are connected, and the branch breaker 15b supplies power to the load 3.

  As shown in the configuration example of FIG. 11, the bypass unit 16a is installed in parallel with the main breaker 15a, and the bypass unit 16b is installed in parallel with the branch breaker 15b. The Thereby, even when it is necessary to always supply power to the load 3 connected to the secondary side of the branch breaker 15b connected in parallel with the bypass unit 16b, the main breaker 15a and the branch breaker 15b can be replaced. It can be performed. Note that the bypass unit 16b may not be installed for the branch breaker 15b connected to the secondary side of the load 3 that does not need to be constantly supplied with power.

  The distribution board 103 having the configuration shown in FIG. 11 has a configuration using any of the switches 167 to 169 in the power distribution apparatus according to the first to fourth embodiments as the bypass units 16a and 16b. Each effect described in the embodiment can be obtained. At this time, the main breaker 15a and the branch breaker 15b to which the bypass units 16a and 16b are connected in parallel have any one of the configurations of the breakers 151 to 154 in the power distribution apparatus of the first to fourth embodiments.

  The present invention can be applied to a power distribution device such as a distribution board provided with a breaker. Moreover, the power distribution device in which the breaker to be replaced may be a main breaker, or the power distribution device in which the breaker to be replaced is a branch breaker may be used. Furthermore, as a power distribution device, not only a power distribution device supplied with power from a single-phase three-wire external power supply but also a power distribution device supplied with power from a single-phase two-wire or three-phase external power source or a DC power supply Even a power distribution device is applicable.

These are the schematic diagrams which show the basic composition of the power distribution apparatus of this invention. These are the schematic which shows the structure of the power distribution apparatus of 1st Embodiment. These are external appearance perspective views which show the structure of the breaker used for the power distribution apparatus in the structure of FIG. These are figures which show the relationship between the terminal and electric circuit in the breaker of FIG. These are the schematic diagrams which show the structure of the power distribution apparatus of 2nd Embodiment. These are external appearance perspective views which show the structure of the breaker used for the power distribution apparatus in the structure of FIG. These are figures which show the relationship between the terminal and electric circuit in the breaker of FIG. These are block diagrams which show the internal structure of the breaker used for the power distribution apparatus of 3rd Embodiment. FIG. 9 is a schematic external view showing the configuration of the breaker in FIG. 8, (a) is a configuration example provided with a display, (b) is a configuration example provided with a light emitting diode, and (c) is provided with a speaker. It is a structural example. These are block diagrams which show the internal structure of the breaker and switch used for the power distribution apparatus of 4th Embodiment. These are figures which show the structure which applied the structure by the power distribution apparatus of this invention to the distribution board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power distribution apparatus 2 External power supply 3 Load 11 Primary side terminal block 12 Primary electric circuit 13 Secondary side terminal block 14 Secondary electric circuit 15 Breaker 16 Bypass unit 21 Primary side electric wire 31 Secondary side electric wire 100, 101 Power distribution apparatus 103 minutes Switchboard 121-123 Primary conductive bar 141-143 Secondary conductive bar 151-154 Breaker 161-163 Primary circuit for bypass 164-166 Secondary circuit for bypass 167-169 Switch 301, 903 Primary fixed Contact 302, 904 Secondary side fixed contact 303, 905 Movable segment 304, 906 Control unit 305 Measurement unit 306 Memory 307 Detection unit 308 Notification unit 401, 907 Communication unit 501, 901 Primary side terminal 502, 902 Secondary side terminal 503 Handle 511-513 Plug-in terminal 514-516 Contact conductor (1 Side fixed contact)
521 to 523 Plug-in terminal 524 to 526 Contact conductor (secondary fixed contact)
531 to 533 Plug-in terminal 541 to 543 Plug-in terminal

Claims (5)

Electrical connection between the primary circuit connected to the primary power line on the power supply side, the secondary circuit connected to the secondary cable on the load side, and the primary circuit and the secondary circuit A power distribution device that includes a breaker that separates the power supply and that constantly supplies power from the secondary-side electric wire;
The breaker is detachably connected to the primary circuit and the secondary circuit,
When the primary circuit and the secondary circuit are connected in parallel with the breaker, and the energization between the primary circuit and the secondary circuit by the breaker is interrupted, the primary circuit and A bypass unit for energizing between the secondary electric circuit,
Each of the primary electric circuit and the secondary electric circuit is composed of a plate-like conductive bar,
The power distribution device , wherein the breaker has a primary side terminal and a secondary side terminal having a plug-in structure that engages with a conductive bar constituting each of the primary electric circuit and the secondary electric circuit . In claim 1,
The power distribution device, wherein the bypass unit includes a switch connected between the primary electric circuit and the secondary electric circuit. In claim 1 or 2 ,
Conductive bars constituting each of the primary circuit and the secondary circuit are installed in parallel,
The power distribution device, wherein the breaker is straddled between the primary electric circuit and the secondary electric circuit in a direction intersecting with an installation direction of the conductive bar. In any one of Claims 1 thru | or 3 ,
The power distribution device, wherein the breaker includes a detection unit that detects a replacement time of the device itself, and a notification unit that notifies when the detection unit detects the replacement time. In claim 4 ,
The power distribution device according to claim 1, wherein the breaker further includes a control unit that shuts off its own device and energizes the bypass circuit when the detection unit detects the replacement time.

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