JP3147886U - Lightning arrester damage notification device and lightning arrester system - Google Patents

Abstract

A lightning arrester breakage notification device capable of easily reporting a lightning arrester breakage state. A lightning arrester breakage alarm device 1 is a lightning arrester for a power source, and a photocoupler 14 for detecting a breakage state in which a fuse is blown in a lightning arrester including fuses 21 and 22 for preventing a short circuit, and a detection And a buzzer 19 that outputs a sound for notifying the damaged state when the unit detects the damaged state of the lightning arrester. Further, the lightning arrester side and the sound output unit side are electrically insulated by the photocoupler 14. [Selection] Figure 3

Description

  The present invention relates to a lightning arrester breakage notification device that detects breakage of a lightning arrester.

Conventionally, lightning arresters for preventing lightning damage, particularly induced lightning, have been used in electrical equipment, electronic equipment, and the like (see, for example, Patent Document 1).
Japanese Patent No. 3940431

  However, when the lightning arrester is damaged, there is a problem that it is impossible to prevent lightning damage properly.

  The present invention has been made in view of the above situation, and an object thereof is to provide a lightning arrester breakage notification device and the like that can easily report breakage of a lightning arrester.

A lightning arrester breakage notification device according to the present invention includes a detection unit that detects a breakage state in a lightning arrester, and a sound output unit that outputs a sound for notifying the breakage state when the detection unit detects a breakage state in the lightning arrester. It is provided.
With such a configuration, when the lightning arrester is broken, this can be notified by sound. As a result, it is possible to avoid a situation where the damaged lightning arrester is continuously used, and to appropriately prevent lightning damage.

In the lightning arrester breakage notification device according to the present invention, the lightning arrester side and the sound output unit side may be electrically insulated.
With such a configuration, even when overvoltage is absorbed on the lightning arrester side, it is possible to prevent high voltage from flowing to the sound output unit side. The part can be prevented from being damaged.

In the lightning arrester breakage notification device according to the present invention, the lightning arrester includes a fuse for preventing a short circuit, and the breakage state may be a state in which the fuse is blown.
With this configuration, when the fuse for preventing a short circuit in the lightning arrester is broken, this can be notified by sound.

Further, in the lightning arrester breakage notification device according to the present invention, the detection unit has a photocoupler having a light emitting element and a light receiving element, and the light receiving element emits light when the fuse is not blown, and the fuse The lightning element may not emit light when it is cut off, and the light-receiving element may not conduct, thereby detecting a damaged state in the lightning arrester.
With such a configuration, it is possible to appropriately detect a damaged state in the lightning arrester.

  A lightning arrester system according to the present invention includes the lightning arrester breakage notification device and the lightning arrester.

  According to the lightning arrester breakage notification device or the like according to the present invention, it is possible to easily report breakage of the lightning arrester. As a result, it is possible to avoid a situation where the damaged lightning arrester is continuously used, and to appropriately prevent lightning damage.

  Hereinafter, a lightning arrester breakage notification device and a lightning arrester system according to the present invention will be described using embodiments. Note that, in the following embodiments, the components given the same reference numerals are the same or equivalent, and repetitive description may be omitted.

(Embodiment 1)
A lightning arrester breakage notification device and a lightning arrester system according to Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a lightning arrester system 10 according to the present embodiment. In FIG. 1, a lightning arrester system 10 according to the present embodiment includes a lightning arrester breakage notification device 1, a lightning arrester 2, a breaker 3, and an AC adapter 4.

  The lightning arrester 2 is for power supply. Therefore, the induced lightning generated in the power line can be appropriately absorbed. This power source is usually an AC power source. The power source is, for example, a power source for a machine control device or other electrical equipment. The breaker 3 is provided to disconnect the lightning arrester from the power line when the lightning arrester 2 is inspected. In the present embodiment, description will be made assuming that the breaker 3 is turned on. The lightning arrester 2 normally does not flow current, and when a high voltage is generated due to induced lightning or the like, the current flows and absorbs the high voltage. In the present embodiment, a description will be given of a case where the lightning arrester 2 includes a short-circuit prevention fuse. For example, when the surge protection element (surge absorber) in the lightning arrester 2 is short-circuited, this fuse is cut to prevent the current from continuing to flow through the lightning arrester 2. Further, the AC adapter 4 supplies power to the lightning arrester breakage notification device 1.

FIG. 2 is a block diagram showing a configuration of the lightning arrester breakage notification device 1 according to the present embodiment. The lightning arrester breakage notification device 1 according to the present embodiment includes a detection unit 5 and a sound output unit 6.
The detection unit 5 detects a damaged state in the lightning arrester 2 for power supply. This breakage state is usually a breakage of a short-circuit prevention fuse in the lightning arrester 2, that is, a state in which the fuse is blown. In this case, since a high voltage is not applied to the surge protection element, appropriate lightning damage cannot be prevented. Therefore, such an inappropriate state of the lightning arrester 2 is detected by the detection unit 5.

  When the detection unit 5 detects a damaged state in the lightning arrester 2, the sound output unit 6 outputs a sound for notifying the damaged state. This sound output may be anything. For example, sound output by a buzzer may be used. The sound output unit 6 may be composed of a sound signal generation unit and a speaker that outputs the sound signal generated by the sound signal generation unit. In addition, since the sound output from the sound output unit 6 is used to warn of a damaged state of the lightning arrester 2, it is preferable that the sound and volume be as easily audible as possible.

FIG. 3 is a circuit diagram showing an example of a specific configuration of the lightning arrester 2 and the lightning arrester breakage notification device 1 for a single-phase two-wire power source.
In FIG. 3, the lightning arrester 2 includes fuses 21 and 22 and surge protection elements (SPD) 23 and 24. For example, the surge protection elements 23 and 24 may be those described in the above-mentioned patent document, or may be other gap-type surge protection elements.

  The lightning arrester breakage notification device 1 includes resistors 11, 15, 18, a diode 12, a tantalum capacitor 13, a photocoupler 14, a switch 16, a transistor 17, and a buzzer 19. It can be considered that the buzzer 19 corresponds to the sound output unit 6 and the other configuration corresponds to the detection unit 5. Note that a configuration close to the buzzer 19 such as the resistor 18 and the switch 16 may be considered to be included in the sound output unit 6.

  When the fuses 21 and 22 are not blown, the light emitting element of the photocoupler 14 (eg, a light emitting diode) emits light by the direct current rectified by the diode 12 and smoothed by the tantalum capacitor 13. The light is received by a light receiving element (for example, a phototransistor) of the photocoupler 14, and the light receiving element becomes conductive. As a result, no current flows through the buzzer 19 and the buzzer 19 does not sound.

  On the other hand, when at least one of the fuses 21 and 22 is blown, no current flows through the light emitting element of the photocoupler 14, and the light receiving element of the photocoupler 14 is not conducted. As a result, a current flows through the buzzer 19, and the buzzer 19 sounds to notify the damage state of the lightning arrester 2, that is, the state where at least one of the fuses 21 and 22 of the lightning arrester 2 is blown. . The user who hears the sound of the buzzer 19 can know that at least one of the fuses 21 and 22 of the lightning arrester 2 is blown, and can repair the lightning arrester 2 by replacing the blown fuse. .

  Thus, the light receiving element of the photocoupler 14 emits light when both the fuses 21 and 22 are not blown, and does not emit light when at least one of the fuses 21 and 22 is blown. When at least one of the fuses 21 and 22 is blown, the light receiving element of the photocoupler 14 does not receive light and does not conduct, so that the breakage state in the lightning arrester 2 can be detected.

  In addition, the lightning arrester 2 side and the sound output unit 6 (buzzer 19) side are electrically insulated (blocked) by the photocoupler 14 in this way. Therefore, even if surge is absorbed in the lightning arrester 2, a high voltage is not applied to the sound output unit 6 side. Therefore, it is possible to prevent the sound output unit 6 from being damaged when the surge arrester 2 absorbs the surge. In order to electrically insulate the lightning arrester 2 side from the sound output unit 6 (buzzer 19) side, the AC adapter 4 is also electrically disconnected on the AC side and the DC side. It is preferable to use a type. Moreover, it can replace with the AC adapter 4 and can electrically interrupt the lightning arrester 2 side and the sound output part 6 (buzzer 19) side by operating with a battery.

  The switch 16 is for testing the buzzer 19. Normally, the switch 16 should be on the side shown in FIG. 3, but when testing the buzzer 19, current can be passed through the buzzer 19 by setting the switch 16 to the opposite side of FIG. 3. It can be confirmed whether the buzzer 19 sounds.

  Further, when the lightning arrester breakage notification device 1 is the circuit shown in FIG. 3, when the breaker 3 is turned off, the voltage attenuation on the lightning arrester 2 side is less than the voltage attenuation on the buzzer 19 side. fast. Therefore, immediately after the breaker 3 is turned off, the buzzer 19 sounds for a moment. Even in this case, it can be confirmed whether or not the buzzer 19 operates normally.

  Although the case of a single-phase two-wire power source has been described with reference to FIG. 3, the circuit shown in FIG. 4 may be used in the case of a three-phase three-wire system. In FIG. 4, the lightning arrester 2 further includes a fuse 25 and a surge protection element 26. The lightning arrester breakage notification device 1 includes a resistor 31, a diode 32, and a tantalum capacitor 33. The lightning arrester breakage notification device 1 includes a photocoupler 34 having two light emitting elements and two light receiving elements instead of the photocoupler 14. Also in this case, if any one of the fuses 21, 22, 25 is blown, the buzzer 19 sounds to notify the damaged state. In the photocoupler 34, light emitted from the upper light emitting element is received by the upper light receiving element, and light emitted from the lower light emitting element is received by the lower light receiving element.

  In the present embodiment, the case where the lightning arrester breakage notification device 1 is the circuit shown in FIGS. 3 and 4 has been described. However, other circuit configurations may be used within the scope of the effects of the present invention. Needless to say.

  As described above, according to the lightning arrester breakage notification device 1 and the lightning arrester system 10 according to the present embodiment, since the breakage of the lightning arrester 2 can be notified by sound, the user can easily recognize that the lightning arrester 2 is broken. can do. As a result, the situation where the damaged lightning arrester 2 is continuously used can be avoided, and lightning damage can be appropriately prevented.

  In addition, in FIG. 1, although the structure where the lightning arrester system 10 was provided with the breaker 3 was demonstrated, the lightning arrester system 10 does not need to be provided with the breaker 3. FIG. Further, as described above, when the lightning arrester breakage notification device 1 is operated by a battery, the lightning arrester system 10 may not include the AC adapter 4. The lightning arrester 2 is preferably for power supply, but may be for communication. The communication lightning arrester 2 is used, for example, in a communication line such as a LAN or WAN to absorb a high voltage transmitted through the communication line. Moreover, you may make it seal the lightning arrester damage alerting | reporting apparatus 1 and the lightning arrester system 10 with a sealing case for dust prevention. Even in such a case, it is preferable that the buzzer or the speaker of the sound output unit 6 is provided outside the sealing case so that the sound output from the sound output unit 6 can be appropriately heard. It is.

  Further, the present invention is not limited to the above-described embodiment, and various modifications are possible, and it goes without saying that these are also included in the scope of the present invention.

  From the above, according to the lightning arrester breakage notification device and the like according to the present invention, it is possible to easily report the breakage of the lightning arrester, and it is useful as a device for notifying the breakage state of the lightning arrester.

The figure which shows the structure of the lightning arrester system by Embodiment 1 of this invention. The block diagram which shows the structure of the lightning arrester breakage | reporting apparatus by the same embodiment The figure which shows an example of the circuit of the lightning arrester by the same embodiment, a lightning arrester damage alerting device The figure which shows an example of the circuit of the lightning arrester by the same embodiment, a lightning arrester damage alerting device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Arrester breakage alarm device 2 Arrester 3 Breaker 4 AC adapter 5 Detection part 6 Sound output part 10 Arrester system 11, 15, 18, 31 Resistance 12, 32 Diode 13, 33 Tantalum capacitor 14, 34 Photocoupler 16 Switch 17 Transistor 19 Buzzer 21, 22, 25 Fuse 23, 24, 26 Surge protective element

Claims (5)

A detector for detecting a breakage state in the lightning arrester;
And a sound output unit that outputs a sound for notifying the damaged state when the detecting unit detects a damaged state in the lightning arrester. The lightning arrester breakage alarm device according to claim 1, wherein the lightning arrester side and the sound output unit side are electrically insulated. The lightning arrester is provided with a fuse for preventing a short circuit,
The lightning arrester breakage notification device according to claim 1 or 2, wherein the breakage state is a state in which the fuse is blown. The detector is
A photocoupler having a light emitting element and a light receiving element;
The light receiving element emits light when the fuse is not blown, and does not emit light when the fuse is blown,
The lightning arrester breakage | reporting apparatus of Claim 3 which detects the damage state in the said lightning arrester by the said light receiving element becoming non-conductive. A lightning arrester breakage alarm device according to any one of claims 1 to 4,
A lightning arrester system comprising the lightning arrester.

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