JP4626311B2 - Equipment for distribution boards - Google Patents

Description

  The present invention relates to a distribution board device such as a branch breaker connected to a conductive bar connected to a main breaker.

  In the conventional example (see, for example, Patent Document 1), for example, as shown in FIG. 4, a current transformer 53 is disposed in the vicinity of the output terminal 52 of each branch breaker 51 connected to the main breaker 50 in the distribution board. The secondary output lines 55 of these current transformers 53 are routed and connected to the detected current synthesizer 54. The detected current synthesizer 54 synthesizes the current detected for each branch power distribution circuit in order to monitor the power consumption status of the distribution system, and inputs it to a power measuring device such as a power amount monitoring device. Note that the left and right branch breakers in the figure use two types of breakers so that the current transformer 53 is interposed in the electric circuit on the power supply line side instead of the neutral line side.

However, since the current transformer 53 is arranged in the vicinity of the branch breaker 52, a space for arranging the current transformer 53 is required in the distribution board, and the distribution board is enlarged or narrow in the distribution board. Since the current transformer is arranged in a space, there is a problem that the installation work is very troublesome.
JP 2001-208778

  The present invention has been made in view of such a reason, and the object of the present invention is to eliminate the need for a current transformer to be interposed in the electric wire connected to the output terminal of the branch breaker, and thus to arrange the current transformer. It is an object to provide a distribution board device that eliminates the need for a distribution board space to be installed and that can reduce the size of the distribution board.

In the distribution board device of the present invention, the container has an input terminal disposed on one end face side and an output terminal connected to a load on the other end face side. The abnormal current detecting means is disposed in the body and detects a contact portion and an overcurrent or short circuit disposed in the electric circuit between the input terminal and the output terminal . The open / close / trip mechanism has a handle disposed on the container body, and opens / closes the contact portion by opening / closing the handle and opens the contact portion according to the detection operation of the abnormal current detecting means. The current transformer has a through hole penetrating the electric path, and the through hole is disposed so as to be perpendicular to the bottom of the container body. A secondary output line is connected to the output terminal on the other end surface of the container body. Are also led out from the bottom side .

Another distribution board device according to the present invention is a distribution board device connected to a conductive bar connected to a main breaker. The container body is provided with a receiving blade plugged into the conductive bar on one end face side and an output terminal connected to a load on the other end face side. The abnormal current detecting means is disposed in the container and detects a contact portion and an overcurrent or short circuit disposed in the electric path between the receiving blade and the output terminal . The open / close / trip mechanism has a handle disposed on the container body, and opens / closes the contact portion by opening / closing the handle and opens the contact portion according to the detection operation of the abnormal current detecting means. The current transformer has a through hole penetrating the electric path, and the through hole is disposed so as to be perpendicular to the bottom of the container body. A secondary output line is connected to the output terminal on the other end surface of the container body. Are also led out from the bottom side .

  The said structure WHEREIN: The said secondary output line displays the polarity and is derived | led-out from the said container.

  According to the distribution board device of the present invention, since the current flowing through the load can be measured by the current transformer disposed in the container, the current transformer is connected to the wire connected to the output terminal of the branch breaker. There is no need to intervene, so that a distribution board space for disposing a current transformer becomes unnecessary, and the distribution board can be downsized. In addition, since the current transformer is built in the vessel in advance, there is no fear that the operator will install the current transformer with the wrong polarity. Furthermore, since the secondary output line of the current transformer is led out from the other end surface side of the container on the output terminal side, the secondary output line can be easily routed into the distribution board, and which distribution board equipment It is possible to easily determine whether it is a secondary output line.

  According to the distribution board device of another invention, since the current flowing through the load can be measured by the current transformer disposed in the container, the current transformer is connected to the wire connected to the output terminal of the branch breaker. This eliminates the need for a distribution board space in which a current transformer is disposed, and allows a reduction in the size of the distribution board. Moreover, the installation work for arranging the current transformer in the distribution board can be omitted, so that the work for assembling the equipment is simplified. Since the distribution board device has a configuration in which a receiving blade is inserted into and connected to the conductive bar, workability of connecting the distribution board device to the conductive bar is good. In addition, since the current transformer is built in the vessel in advance, there is no fear that the operator will install the current transformer with the wrong polarity. Furthermore, since the secondary output line of the current transformer is led out from the other end surface side of the container on the output terminal side, the secondary output line can be easily routed into the distribution board, and which distribution board equipment It is possible to easily determine whether it is a secondary output line. As a result, the assembly workability of the entire distribution board can be remarkably improved.

  Moreover, when connecting the secondary output line of the current transformer to various external devices, it becomes easy to match the polarity.

  A distribution board to which a distribution board device according to an embodiment of the present invention is applied will be described with reference to FIGS. The distribution board includes a main breaker 1, a plurality of branch breakers 2 that are distribution board devices, and a detection current synthesizer 3.

  The main breaker 1 is installed in the upper left space of the distribution board in FIG. 1, has an input terminal 13 at the upper end, and connects one end 4a of a plurality of substantially L-shaped connection bars 4 to the output terminal 14 at the lower end. Yes. The other ends 4b of the connection bar 4 are connected to the upper ends of the plurality of conductive bars 5, respectively. The plurality of conductive bars 5 extend in a vertical direction and are arranged in a plurality of stages at intervals in a direction perpendicular to the paper surface of FIG.

  The plurality of branch breakers 2 are arranged along both sides of the conductive bar 5, and are connected to two of the plurality of conductive bars 5 connected to the main breaker 1, for example, a power line and a neutral line. . Each branch breaker 2 has an outer shell 6 and a current transformer 7 incorporated therein.

  The vessel body 6 has an input terminal 24 on one end face 9 side, and a conductive bar connecting adapter 27 having a receiving blade 8 connected to the input terminal 24 is attached so as to cover the input terminal 24, thereby conducting Two receiving blades 8 that are plugged into the bar 5 are arranged on one end face 9 side of the vessel body 6. Therefore, when the receiving blade 8 of the adapter 27 is inserted into the two conductive bars 5, the input terminal 24 is connected to the conductive bar 5. Further, two output terminals 11 connected to the load are disposed on the other end face 10 side of the container body 6. The output terminal 11 is a fast connection terminal and is connected to a load line 28.

  Inside the container 6, a contact portion 16 including a movable contact 14 and a fixed contact 15 is interposed on the output terminal 11 side in the electrical path between the receiving blade 8 and the output terminal 11, and the electrical path on the power line side An abnormal current detecting means 12 is interposed on the receiving blade 8 side in series with the contact portion 16.

  As shown in FIG. 3, the movable contact 14 is held by an open / close / trip mechanism 17. The open / close / trip mechanism 17 locks one end of the lever 19 by locking the handle 18, the lever 19, the reversing link 20 connecting the middle of the handle 18 and the lever 19, and one end of the lever 19. The tripping means 21 for tripping and the movable contact 14 are held, and the movable movable frame 22 that is engaged with the other end of the lever 19 is urged in the direction in which the movable contact 14 opens. And an opening spring 23 that pushes up and biases the lever 19.

  The current transformer 7 is disposed in the body 6, and the portion between the abnormal current detecting means 12 and the contact portion 16 in the electric circuit between the receiving blade 8 and the output terminal 11 penetrates as the primary side, and the secondary output The wire 25 is led out from the other end surface 10 side of the vessel body 6 to the outside. The current transformer 7 penetrates the former electric circuit among the electric circuit on the power source line side and the electric circuit on the neutral line side. More specifically, the current transformer 7 is arranged near the input terminal 24 at the bottom of the body 6 as shown in FIG. 26 passes through the current transformer 7. Further, the secondary output line 25 is derived from the vessel 6 with the polarity displayed, and is connected to the detected current synthesizer 3.

  In FIG. 3, when the handle 18 is tilted to the left, the lever 19 is pushed by the reverse link 20 in the locked state of the tripping means 21 and pushes the movable frame 22 against the opening spring 23 to rotate the movable frame 22. The movable contact 14 comes into contact with the fixed contact 15 and the branch breaker 2 is turned on. Therefore, a current flows between the receiving blade 8 and the output terminal 11 connected to the load through the main breaker 1, the connection bar 4, and the conductive bar 5. With this current, an output appears on the secondary output line 25 of the current transformer 7 and is input to the detected current synthesizer 3.

  In addition, the equipment for distribution boards is restricted to a branch breaker, and the apparatus incorporated in a distribution board is included.

It is a top view of the distribution board of one embodiment of the present invention. It is the schematic which shows arrangement | positioning of the current transformer of a branch breaker. It is a schematic sectional drawing of the OFF state of a branch breaker. It is a top view of the electricity distribution panel of a prior art example.

Explanation of symbols

1 Master Breaker 2 Branch Breaker 3 Detected Current Synthesizer 5 Conductive Bar 6 Body 7 Current Transformer
8 Receiving blade 9 One end face 10 Other end face 11 Output terminal 25 Secondary output line

Claims (3)

A device body which is disposed an output terminal connected to the load to the other side with disposing the input terminal on one end face side, disposed path between the input terminal and the output terminal are disposed in the vessel body And an abnormal current detecting means for detecting an overcurrent or a short circuit, and a handle disposed on the body, and the opening and closing operation of the handle opens and closes the contact part and detects the abnormal current detecting means. An open / close / trip mechanism that opens the contact portion according to the operation, and a through hole that penetrates the electric circuit, and the through hole is disposed so as to be perpendicular to the bottom of the container body, and a secondary output line is provided. A distribution board device comprising: a current transformer led out from the bottom side to the outside of the output terminal on the other end surface of the container body . A distribution board device connected to a conductive bar connected to a main breaker, wherein a receiving blade inserted and connected to the conductive bar is disposed on one end surface side and connected to a load on the other end surface side A container having an output terminal, a contact portion disposed in the container and disposed in a circuit between the receiving blade and the output terminal, an abnormal current detecting means for detecting an overcurrent or a short circuit, and the instrument An open / close / trip mechanism that has a handle disposed on the body and opens / closes the contact portion by opening / closing operation of the handle and opens the contact portion in accordance with detection operation of the abnormal current detecting means; A through-hole penetrating therethrough is disposed so that the through-hole is perpendicular to the bottom of the container body, and the secondary output line is led out from the bottom side to the outside rather than the output terminal on the other end surface of the container body. Distribution board equipment equipped with a current transformer.   The distribution board device according to claim 2, wherein the secondary output line is derived from the container by displaying a polarity.

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