JP2009277454A - Automatic input device for breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic input device for breaker, in which there exists no risk of the surge voltage of an induction lightning infiltrating a communication wire connected to an external display output part, and moreover, which can accurately conduct an external display output of the state of the breaker. <P>SOLUTION: This automatic input device equipped with the external display output part of the state of the breaker 1. The external display output part is installed on the same circuit board, and equipped with a light communication means 16, constituted of at least a pair of oppositely arranged light-emitting element 14 and light-receiving element 15. According to this, even if induction lightning infiltrates, when lightning strikes, the system is cut off at a part of the light communication means 16, and infiltration to the communication wire will not occur. In addition, by a means where copper foil parts 8a, 8b for wiring of the light-emitting element 14 side and the light-receiving element 15 side are separately formed from each other and a groove part 19 for insulation is formed on a substrate between them, lightning-resistance insulating characteristics can be further enhanced. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automatic loading device for a breaker that is provided adjacent to a breaker and automatically performs a handle operation of the breaker.

  Even if the circuit breaker placed in a communication unmanned base station trips due to a lightning strike or other cause, it is unattended, so it cannot be immediately turned on manually and the circuit is shut down for a long time. Will remain. Therefore, these breakers are equipped with an automatic loading device, and the handle of the breaker is mechanically operated by a command from a remote monitoring station or by the judgment of the automatic loading device itself, and automatically returned to the on state. Has been done.

  Further, as disclosed in Patent Document 1, it is also known to incorporate an external display output unit in a breaker state into an automatic loading device so that the state of a contact can be displayed at a remote monitoring station or the like. The external display output unit is connected to a communication line, and transmits a measurement signal to a remote place via the communication system.

The above-described automatic input device itself has conventionally set a unique insulation standard, and has a sufficient withstand voltage against ordinary induced lightning and the like. However, a sufficient insulation measure is not taken for the communication line connected to the external display output unit of the automatic input device. For this reason, at the time of lightning strike, there is a possibility that the induced lightning enters the communication line from the external display output unit of the automatic throwing device and damages the communication system of the connection destination.
JP 7-192596 A

  Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, there is no possibility that the surge voltage of the induced lightning enters the communication line connected to the external display output unit even during a lightning strike, and the external state of the circuit breaker An object of the present invention is to provide an automatic loading device for a breaker capable of accurately performing display output.

  The present invention made in order to solve the above-mentioned problems is provided in an automatic input device provided adjacent to a breaker and provided with an external display output unit in the state of the breaker. An optical communication means comprising at least one set of light emitting element and light receiving element is provided, and this optical communication means is installed on the same circuit board.

  The wiring copper foil part on the light emitting element side and the copper foil part on the light receiving element side formed on the same substrate are formed separately from each other, and the wiring copper foil is formed as described in claim 2. It is preferable to form an insulating groove on the substrate between the two portions. Furthermore, as described in claim 3, a plurality of sets of optical communication means composed of a light emitting element and a light receiving element are provided, and a partition that blocks light between these elements is suspended from the case cover of the automatic loading device. It is preferable.

  The breaker automatic throwing device of the present invention uses an optical communication means composed of a light emitting element and a light receiving element in the external display output unit, so that even if a lightning strike enters from the external display output unit of the automatic throwing device during a lightning strike, It is blocked by the optical communication means and does not enter the communication line connected to the light receiving element side. Moreover, since the optical communication means is installed on the same circuit board, there is little possibility that the light emitting element and the light receiving element are displaced from each other, and it is easy to mount the automatic communication device.

  According to the invention of claim 2, the insulation distance between the wiring copper foil part on the light emitting element side and the wiring copper foil part on the light receiving element side can be ensured, and the intrusion of the induced lightning can be more reliably performed. Can be prevented. Further, according to the invention of claim 3, even when a plurality of sets of optical communication means are provided, the light beams do not interfere with each other between the adjacent optical communication means.

Hereinafter, preferred embodiments of the present invention will be described.
FIG. 1 is a plan view showing an embodiment of the present invention, wherein 1 is a breaker, and 2 is a terminal block connected to the load side. In this embodiment, they are mounted on a base 4 that protrudes to the side of the automatic charging device main body 3.

  As shown in FIG. 2, a motor 5, a transformer 6 and the like are incorporated in the automatic charging device main body 3, and the handle of the breaker 1 is forcibly operated by the handle operating arm 7 shown in FIG. The function of automatically returning the breaker 1 to the on state is the same as the conventional one. The handle operating arm 7 is driven by a motor 5.

  A circuit board having an external display output unit in the state of the breaker 1 is housed inside the automatic loading apparatus main body 3, and the transformer 6 and its wiring are arranged below the first circuit board 8. Is located. As shown in FIGS. 3 to 5, in this embodiment, there are a horizontal first circuit board 8 and a vertical second circuit board 9, and these boards are arranged at the upper end of the second circuit board 9. The protruding pins 10 are physically and electrically connected by inserting them into the connector 11 of the first circuit board 8.

  On the first circuit board 8, a display device 12 such as a counter, a changeover / setting switch 13, and an optical communication unit 16 including a light emitting element 14 and a light receiving element 15 are mounted. In addition to the communication control means 17 and the operation control means 18, the second circuit board 9 is equipped with storage means and the like. The light receiving element 15 of the optical communication means 16 is connected to a communication line (not shown), and transmits the state of the breaker contact to a remote monitoring station or the like. Since the optical communication means 16 composed of the light emitting element 14 and the light receiving element 15 is installed on the same circuit board 8, the mutual position of the light emitting element 14 and the light receiving element 15 is less likely to shift, and an optical signal is accurately transmitted. Can be transmitted. In parallel with the optical communication means 16, at least one pair of the light emitting element 14a and the light receiving element 15a is attached at a position opposite to the light emitting element 14 and the light receiving element to form a remote operation input means 16a.

  These circuit boards are printed circuit boards, and the above-described elements and devices are mounted on the wiring copper foil portion. As shown in FIGS. 3 to 5, the light emission of the first circuit board 8 is performed. The wiring copper foil portions 8a and 8b on the element 14 side and the light receiving element 15 side are formed separately from each other, and an insulating groove portion 19 is formed on the substrate between the separated wiring copper foil portions. Has been. Note that another groove portion 19 b may be formed in the middle of the U-shaped insulating groove portion 19 from the edge of the circuit board 8. In this embodiment, the insulating groove portion 19 is a U-shaped groove. However, the end portion of the groove reaches the edge of the first circuit board 8 and the substrate itself is cut out to form the insulating groove portion 19. You can also. By providing such an insulating groove portion 19, a creeping insulation distance between the wiring copper foil portion 8a on the light emitting element 14 side and the wiring copper foil portion 8b on the light receiving element 15 side is ensured, and the withstand voltage characteristic is improved. Can be increased.

  The optical communication means 16 is composed of at least one pair of light emitting elements 14 and light receiving elements 15. However, when a plurality of sets of optical communication means 16 are provided as in this embodiment, the light receiving elements 15 are adjacent to each other. There is a possibility of malfunction due to receiving the light beam from the light emitting element 14. Therefore, as shown in FIG. 6, it is preferable to hang a partition wall 21 on the back surface of the case cover 20 of the automatic loading device to shield light between adjacent elements.

  In this embodiment, CT22 and ZCT23 are incorporated in the terminal block 2 as shown in FIG. 7, and the current value or leakage current detected by these is input to the operation control means 18 of the automatic input device body 3. In addition to controlling the operation of the automatic charging device, external display can be performed via an external display output unit. However, in the present invention, the terminal block 2 is not an essential requirement and may be omitted. If an insulating partition wall 21a suspended from the case cover 20 is inserted into the bottom side portion 19a of the U-shaped insulating groove portion 19, it is insulated from the copper foil portion for wiring and the electronic element in the vicinity of the bottom side portion 19a. A distance can be secured.

  The breaker automatic loading device of the present invention configured as described above is capable of mechanically operating the handle of the tripped breaker 1 and automatically returning it to the on state as in the conventional case. The breaker automatic loading device of the present invention includes an external display output unit, and the state of the contact of the breaker 1 and the like can be externally displayed via a communication line. However, the automatic breaker insertion device of the present invention uses the optical communication means 16 in the external display output unit unlike the conventional one, so that even if a guided lightning enters during a lightning strike, Does not penetrate the line. For this reason, the communication system of the connection destination is not damaged as in the prior art.

  In particular, if the wiring copper foil portions 8a and 8b on the light emitting element 14 side and the light receiving element 15 side are formed separately from each other, and the insulating groove portion 19 is formed on the substrate between the wiring copper foil portions, Since an insulation distance can be ensured between the light emitting element 14 and the light receiving element 15, sufficient insulation can be ensured against a high voltage caused by a lightning surge. Further, if the partition 21 shields adjacent elements, interference of optical signals can be avoided even when a plurality of sets of optical communication means 16 are provided.

It is a top view which shows embodiment of this invention. It is a horizontal sectional view which shows the internal structure of an automatic injection apparatus main body. It is a perspective view of an automatic loading apparatus main body. FIG. 3 is an exploded perspective view of a first circuit board and a second circuit board. FIG. 3 is a perspective view showing a state in which a first circuit board and a second circuit board are connected. It is a perspective view which shows the internal structure of a case cover. It is a perspective view which shows the internal structure of a terminal block.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Breaker 2 Terminal block 3 Automatic feeder main body 4 Base 5 Motor 6 Transformer 7 Handle operation arm 8 1st circuit board 8a Copper foil part for wiring on the light emitting element side 8b Copper foil part for wiring on the light receiving element side 9 2nd Circuit board 10 Pin 11 Connector 12 Display device 13 Changeover / setting switch 14 Light emitting element 15 Light receiving element 16 Optical communication means 17 Communication control means 18 Operation control means 19 Insulating groove 20 Case cover 21 Bulkhead 22 CT
23 ZCT

Claims (3)

  In an automatic input device provided adjacent to a breaker and provided with an external display output unit in a breaker state, the external display output unit is a light composed of at least a pair of light emitting elements and light receiving elements arranged to face each other. A breaker automatic loading device comprising a communication means, the optical communication means being installed on the same circuit board.   The wiring copper foil portion on the light emitting element side and the copper foil portion on the light receiving element side formed on the same substrate are formed separately from each other, and the insulating groove portion is formed on the substrate between the wiring copper foil portions. The breaker automatic feeding device according to claim 1, wherein:   The optical communication means comprising a light emitting element and a light receiving element is provided in plural sets, and a partition for shielding light between these elements is suspended from the case cover of the automatic loading device. Breaker automatic loading device.

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