JP2005102498A - Power interrupting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a circuit from being unnecessarily turned off by interrupting power only in a circuit using a predetermined current or larger, when an earthquake is detected from a signal from a seismoscope. <P>SOLUTION: A power interrupting device includes a distribution board 32 which contains a power interrupting switch 23 for interrupting power, a seismoscope 33 for detecting vibration, and a control means 34 for turning off the power interrupting switch 23 when predetermined vibration is detected by a signal of the seismoscope 33. Thus, when an earthquake occurs, power supply can be interrupted, energization to an electric heater is stopped, and a secondary disaster such as a fire, etc., can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a power cutoff device that stops the supply of power in the event of a disaster such as an earthquake.

  Conventionally, this type of power interruption device has been generally disclosed in Japanese Utility Model Laid-Open No. 58-35260 and Japanese Patent Laid-Open No. 4-322120. Hereinafter, the configuration will be described with reference to FIGS. 5 and 6.

  In the conventional example shown in FIG. 5, the structure is also used as a seismic interrupting device, in which a seismic switch 2 that closes a contact point at the time of a seismic connection is connected in parallel with a test switch 1 for confirming an operation of detecting an earth leakage breaker. .

  In the above configuration, the output of the power supply terminal 3 is supplied to the outlet terminal 5 through the main contact 4. When the test switch 1 is turned on, a test current flows through the test winding 6 and an electromotive force is generated in the secondary winding 8 of the zero-phase current transformer 7 for detecting leakage. The amplifier circuit 9 amplifies the secondary electromotive force, and the switching circuit 10 is driven by the amplified signal to turn on the switch means 11. Further, when the switch means 11 is turned on, the lead coil 12 is excited and the main contact 4 is turned off. Similarly, since the seismic switch 2 is installed in parallel with the test switch 1, even when the seismic switch 2 is turned on, the main contact 4 can be turned off. Here, 13 is an energization display lamp.

  Further, in another conventional example shown in FIG. 6, a seismic device 14 for detecting vibration, a feature amount extraction unit 15 for extracting an earthquake feature amount from the output signal of the seismic device, and fuzzy inference from the feature amount data are performed. The reasoning unit 16 determines whether or not it is an earthquake, and the control means 18 that controls the supply of power by the circuit breaker 17. Here, 19 is a power line.

In the above configuration, the seismic vibration is discriminated from the signal from the seismic device 14 by using fuzzy reasoning to cut off the power supply using the circuit breaker when an earthquake occurs.
Japanese Utility Model Publication No. 58-35260 JP-A-4-322120

  However, in the above conventional example, the power is interrupted by the individual earth leakage breakers, and must be installed in all the earth leakage breakers. And it was a breaker with only leakage detection, and when the overcurrent flowed, the power could not be cut off. Moreover, it was the structure by which all electric power was interrupted | blocked by predetermined vibration.

  Another conventional example is an algorithm for detecting an earthquake, and a specific method for shutting down the power has not been specified.

  The present invention solves the above-mentioned problem, and when an earthquake is detected from a signal from a seismic instrument, power is cut off only for a circuit that uses a predetermined current or more, thereby preventing unnecessary interruption of the circuit. It is an object.

  In addition, when the earthquake is detected from the signal from the seismoscope, the power is cut off if it is outside the specified time zone, preventing the necessary power from being cut off when lighting is necessary such as at night. The purpose is to enable safe evacuation.

  Moreover, the function setting means which can set the function stop of a seismic device is provided, and it aims at stopping the function of a seismic device as needed.

  Furthermore, it is intended to safely perform power restoration work by displaying whether the power interruption is during an earthquake, overcurrent, electric leakage, or neutral wire phase loss.

  In order to solve the above-described conventional problems, the power interrupting device of the present invention includes an overcurrent detection unit that detects an overcurrent, a leakage detection unit that detects a leakage, and a single-phase three-wire neutral wire missing phase. At least one detection means among the sexual wire phase loss detection means, a plurality of power cutoff switches, a seismic device for detecting vibration, and the power cutoff switch when a predetermined vibration is detected by a signal of the seismic device Control means for cutting off the current and current detection means for detecting the current used, the control means of the circuit that is flowing a predetermined current value or more when a predetermined vibration is detected by the signal of the seismic device It controls to cut off only the power cut-off switch.

  As a result, when an earthquake is detected from the signal from the seismoscope, only the circuit that uses a predetermined current or more is cut off. Blocking can be prevented.

  The power cut-off device of the present invention can prevent unnecessary cut-off of the circuit by cutting off the power of only the circuit using a predetermined current or more when an earthquake is detected from the signal from the seismoscope.

  1st invention detects the predetermined vibration from the power cutoff switch provided with the electric current detection means, the seismic device which detects vibration, the signal of the said seismic device, and is using more than predetermined current By shutting off the power shut-off switch, when an earthquake is detected from the signal from the seismoscope, it is possible to prevent unnecessary circuit shut-off by shutting off the power of only the circuit that uses a predetermined current or more. .

  According to a second aspect of the present invention, when an earthquake is detected from a signal from a seismic device by selecting a power cutoff switch to be cut off when an earthquake occurs based on a time measurement result of a time measuring means for measuring time, By cutting off power only to circuits that use more than the current, unnecessary circuit breaks can be prevented.

  According to the third aspect of the present invention, since the seismic function setting means for setting the functional stop of the seismoscope is provided, the seismic function can be stopped as necessary.

  According to a fourth aspect of the present invention, a display device is provided to indicate whether the detection of seismic, overcurrent, electric leakage, or neutral wire phase loss is detected, so that whether the electric power is interrupted during an earthquake, overcurrent, or electric leakage. It is possible to safely perform the power restoration work by displaying whether or not the neutral wire is out of phase.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
As shown in FIG. 1 and FIG. 2, a current transformer 20 as an overcurrent detection means and a current measurement means for detecting an overcurrent, a leakage detection means 21 for detecting a leakage, a single-phase three-wire neutral wire phase failure A neutral wire phase loss detecting means 22 for detecting a vibration, a distribution board 32 incorporating a main circuit power cutoff switch 23 and sub circuit power cutoff switches 24-31, a seismic device 33 for detecting vibration, and a seismic device A control means 34 for shutting off the main circuit power cut-off switch 23 when earthquake vibration is detected from the signal 33 is provided in the distribution board 32. When the control means 34 detects from the signal from the seismoscope 33 that the earthquake has a seismic intensity of 6 or more as the predetermined seismic intensity, or that the house has collapsed as a collapse vibration, a plurality of walls have been tilted. It was set as the structure which interrupts | blocks only the power cutoff switch of the circuit in which more than predetermined | prescribed electric current flows among the power cutoff switches 23-31. Here, 35 is a single-phase three-wire power line. As shown in FIG. 3, a display panel 36 is provided to display whether the cause of power interruption is during an earthquake, overcurrent, electric leakage, or neutral line phase loss.

  In such a configuration, the power interruption in the building can be interrupted in accordance with various symptoms by one seismic device.

  For example, by setting the predetermined current value to 15 A within the overcurrent cutoff, the power is not cut off by the overcurrent, but the power can be cut off by an earthquake, and safety at the occurrence of the earthquake can be ensured. And by measuring the current used at the time of the earthquake by means of current measurement means, it is possible to cut off only the secondary circuit that uses the large current, ensuring the safety of evacuation in the event of an earthquake disaster to the minimum necessary can do.

  In addition, the wiring of the power cut-off switch in the distribution board is 8 for emergency lighting 24, living room 25, kitchen bath 26, living room 27, air conditioning 28, second floor 29, entrance 30 and spare 31. In the case of being configured by one, if an earthquake is detected, the seven auxiliary power cut-off switches except for the emergency lighting 24 can be cut off, and emergency lighting can be secured. In addition, although it explained so that the circuit for emergency lighting might be treated separately here, it is clear that the power supply of emergency equipments, such as an alarm, is also included, the method of separating as a main circuit and a subcircuit, and a room A method of treating another power supply circuit separately is also conceivable.

  In addition, by setting the seismic intensity 7 that will collapse the house as a predetermined seismic intensity, in the event of a severe earthquake, the main circuit power cut-off switch 23 is turned off to cut off all power in the building and maximize the power cut-off Can also prevent secondary disasters.

  The predetermined seismic intensity can be freely changed by a function capable of changing the setting depending on the installation state.

  Moreover, by installing a seismic device and a power cut-off switch in the distribution board, the detection information of the seismic device can be reliably transmitted to the power cut-off switch. That is, if the house collapses and the wall where the distribution board is installed collapses, or if a seismic instrument is installed outside the distribution board, the connection cable between the seismic instrument and the distribution board Disconnection due to the collapse of the wall and power cut-off cannot be carried out reliably, and there is a risk of developing into a secondary disaster. However, if a seismoscope and a power cut-off switch are built in the distribution board, the power cut-off will surely occur. The switch can be shut off, and secondary disasters can be reliably prevented.

  And since the display panel that displays the cause of the power interruption is provided, even if it comes back after the power interruption occurs, the cause avoidance measures can be clearly taken, so the recovery work can be performed quickly. .

(Embodiment 2)
Next, the power interruption device according to Embodiment 2 of the present invention will be described with reference to FIG. Parts having the same structure as those of the first embodiment and having the same action are denoted by the same reference numerals, detailed description thereof is omitted, and different parts will be mainly described.

  As shown in FIG. 4, a clock 37 as time measuring means for measuring time, a distribution board 32 incorporating one or more power cut-off switches, a seismic device 33 for detecting vibration, and a signal from the seismic device 33 The control means for cutting off the power cut-off switches 23, 24, 25 when a predetermined vibration is detected from the time and when the timepiece 37 is outside a predetermined time zone is adopted. Here, 38 is a seismic function stop switch as a seismic function setting means.

  In such a configuration, it is necessary for evacuation, such as lighting, by turning off the power cut-off switch when it is determined that the earthquake is greater than the predetermined seismic intensity based on the signal from the seismic sensor and in the predetermined time zone. It is possible to prevent the power from being cut off. Here, the predetermined time zone indicates a daytime zone during which illumination from about 7 am to 4 pm is not necessary.

  In addition, shutting off power at night in a cold district also leads to a stoppage of heating, and the room temperature cannot be kept moderate. For example, when power is cut off due to an earthquake that does not cause much damage during sleep at midnight, it is expected to wake up in the morning without being aware of it. There is a risk of freezing and death, which is very dangerous. In order to prevent such an operation, the power interruption at night can be stopped by a clock.

  Note that it is possible to determine day and night by brightness using a light sensor or the like instead of a clock, and the same effect can be obtained.

  Furthermore, in special areas such as cold districts and homes where bedridden elderly people live, it is not preferable to shut off the power. it can. Also, malfunctions are likely to occur in areas near the road where traffic vibration is large and difficult to distinguish from earthquakes, and this function can stop the seismic function.

  In this way, the seismic function can be stopped in residences and buildings where there must be no power outage.

  As described above, according to the embodiment of the present invention, the following effects can be obtained.

  (1) Power interruption can be efficiently performed by concentrating power interruption of a building at the time of an earthquake based on information from one seismoscope.

  (2) When an earthquake is detected from a signal from a seismic sensor, unnecessary circuits can be prevented from being cut off by cutting off only the circuits that use a predetermined current or more.

  (3) When an earthquake is detected from the signal from the seismoscope, the main circuit is powered off, so that all power can be cut off at the same time and the maximum emergency measures can be taken.

  (4) When the earthquake is detected from the signal from the seismic sensor, it is possible to cut off the power when the lighting is necessary, such as at night, by cutting off the power if it is outside the specified time zone. Safe evacuation.

  (5) It is possible to set the stop of the seismic function as necessary.

  (6) The power recovery operation can be performed safely by displaying whether the power interruption is during an earthquake, overcurrent, electric leakage, or neutral wire phase loss.

  As described above, the power cut-off device according to the present invention can be applied to a power cut-off device that stops power supply in the event of a disaster such as an earthquake.

Configuration diagram of power cutoff device in Embodiment 1 of the present invention Specific circuit diagram of the device Configuration diagram of the display device of the same device Circuit configuration diagram according to Embodiment 2 of the present invention Circuit diagram of a conventional power interruption device Circuit diagram of another conventional power cutoff device

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Current transformer as overcurrent detection means and current measurement means 21 Leakage detection means 22 Neutral wire open phase detection means 23 to 31 Power cut-off switch 32 Distribution board 33 Seismic device 34 Control means 36 Display device 37 Clock (clocking means) )
38 Seismic function stop switch (Seismic function setting means)

Claims (4)

At least one detection means among an overcurrent detection means for detecting an overcurrent, a leakage detection means for detecting a leakage, a neutral wire phase failure detection means for detecting a neutral wire phase failure of a single-phase three-wire, and a plurality of detection means A power cutoff switch; a seismic device that detects vibration; a control unit that shuts off the power cutoff switch when a predetermined vibration is detected by a signal from the seismic device; and a current detection unit that detects a current used. The control means is a power cutoff device that controls to shut off only the power cutoff switch of a circuit in which a predetermined current value or more flows when a predetermined vibration is detected by a signal from the seismic sensor. 2. The power cut-off device according to claim 1, wherein the control means selects a power cut-off switch to be cut off when an earthquake occurs based on a time measurement result of the time measuring means for measuring time. The power interruption device according to claim 1 or 2, further comprising seismic function setting means for setting a function stop of the seismic device. The electric power interruption apparatus of any one of Claims 1-3 provided with the display apparatus which displays whether it is interruption | blocking by the detection of seismic sense, an overcurrent, an electrical leakage, and a neutral wire phase loss.

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