JPH07193976A - Power interruption system - Google Patents

Abstract

PURPOSE:To ensure safety when an adapter interrupted by overcurrent is reset automatically. CONSTITUTION:An adapter 2 is connected between an appliance 6c which can be interrupted by an overcurrent and a receptacle. When the detected current exceeds a contract current limit, the breaker 1 interrupts the adapters sequentially and if the detected current exceeds the limit even after interruption of all adapters, the breaker interrupts. The breaker resets the adapter upon elapse of a predetermined time, and if the current level increases due to reset, the adapter is interrupted again. The appliances are interrupted only partially even if the current exceeds the limit and when the current exceeds it continuously, the breaker functions to interrupt power in safety. Since an appliance for which the switch is not turned OFF is not reset, the adapter can be reset easily in safety.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply cutoff system for cutting off power supply when a current exceeding a contract current flows.

[0002]

2. Description of the Related Art For example, when a household receives electric power from an electric power company, a breaker having a current capacity defined by a contract with the electric power company is installed in an indoor distribution board or the like, and the When a current that exceeds the contract current flows, such as when equipment has a short circuit due to equipment failure or when many electric appliances are used at the same time, the breaker operates and automatically cuts off all power supply to the home. There is.

However, the amount of electricity used in a general household is
It is constantly changing, and it is very inconvenient if the power supply is interrupted each time due to a temporary excess of current. In order to avoid this, it is better to have a large contract current, but the current electricity rate system is a system in which the basic charge increases as the contract current increases, so it is possible to contract with the contract current as small as possible. It is economical.

Further, some electric appliances used in the home suffer from a great inconvenience such as a refrigerator and a lighting device when the power is suddenly cut off by the operation of a breaker, while a dryer and an air conditioner are used. There is a device that you can stop using at any time in the middle like this, and if you can grasp the electric power currently used by the user and judge in advance that it is likely to exceed the contract current, use of the device will be restricted. , It is also possible to prevent the current of the entire equipment being used from exceeding the contract current.

[0005]

However, in the breaker system using the current breaker, the user cannot know the excess of the power consumption in advance, and moreover, the means for interrupting the power supply when the current consumption exceeds the contract current. Since it is only a breaker, if the contract current is exceeded, the breaker will be activated in an instant without any notice, and all the electric appliances in the home will be instantly unusable, which will be a great inconvenience to the user. Is brought. In addition, since the power supply is repeatedly turned on and off by the operation of the breaker, a heavy load is imposed on some appliances, which impairs the functions of OA equipment and shortens the service life. Further, if the contract current is increased to prevent this, a high basic charge must be continuously paid to deal with a temporary increase in power consumption, which is uneconomical.

In order to solve such a point, the applicant of the present invention has disclosed in Japanese Patent Application No. Hei 5-330686 that, when the detected current exceeds the contract current, the breaker is operated to energize the adapter attached to the instrument. We have proposed a system that shuts off the breaker if the detected current exceeds the contract current.

However, once the power supply to the adapters is cut off, it is very troublesome to restore the power supply to the individual adapters when the adapters are to be used thereafter, when the number of adapters is large. Therefore, it is conceivable to automatically turn on the power from an instruction from a breaker or an adapter when a predetermined time has elapsed, but it is possible to operate automatically from the breaker without the person directly operating the device. Initiation of operation of the device is particularly dangerous in devices that generate heat and devices that generate power.

The present invention has been made in view of the above problems, and an object of the present invention is to first cut off the adapter to reduce the current value when the total current of the equipment being used exceeds the contract current. It is an object of the present invention to provide a power supply cutoff system that can safely and easily restore the power supply to an adapter that has been lowered and then cut off once.

[0009]

In order to achieve the above object, the present invention comprises a breaker and a plurality of adapters connected to respective outlets.
First current detecting means for detecting the total current flowing through the breaker, first transmitting means for transmitting a signal to the adapter, first interrupting means for interrupting energization of the breaker itself, contract current, for restoration For a predetermined period of time, a storage means for storing the power-on / off order of the adapter and an identifier of the adapter, and when the detected current value exceeds the contract current, the first transmitting means transfers the corresponding adapter to the corresponding adapter according to the power-on / off order. When the current values exceed the contract current even after the power supply to all the adapters has been cut off, the first cutoff means is activated. To stop the power supply, and restore the power supply to the adapter after the predetermined time has passed from the cutoff,
Further, when the detected current of the first current detecting means is increased by the return operation, the adapter is shut off again.
Control means, and the adapter includes a receiving means for receiving a signal from the breaker, a second shutoff means for shutting off the energization of the adapter, a return means for restoring the shutoff state of the adapter, and the adapter. And storage means for storing the identifier, and second control means for activating the second interruption means when receiving the interruption signal from the breaker and activating the restoration means when receiving the return signal. The power cutoff system was constructed.

Further, the adapter is provided with a function for judging whether or not to perform the return operation, and further, the adapter is configured to transmit a return prohibition signal for not performing the return operation to the breaker.

[0011]

When the total current is less than the contract current, both the electric appliance through the adapter and the appliance directly connected to the outlet are energized. When the current value detected by the first detecting means of the breaker exceeds the contract current, a cutoff signal is transmitted in accordance with the power supply cutoff order, and the power supply to the adapter is sequentially cut off.
The breaker shuts off the breaker itself when the detected current value still exceeds the contract current even after the adapter is shut off, but if the breaker itself is not shut off, the shut-off adapter is restored in sequence after a predetermined time. Let And
If the current value rises when the adapter is restored,
The adapter is shut off again. This makes it possible to automatically restore the interrupted adapter and prevent the appliance from automatically starting operation.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the entire power cutoff system according to the present invention. The breaker 1 is installed at an appropriate place indoors, and a lead-in wire 5 from the outside is connected thereto.
An indoor wiring 4 laid indoors extends from the breaker 1, and an outlet 3 is attached to each end of the indoor wiring 4 and electric appliances 6a to 6e are connected. In FIG. 1, the refrigerator 6a and the water purifier 6b that the user always wants to be supplied with power have their plugs (not shown) directly connected to the outlet 3, but even if the power supply is suddenly cut off. The air conditioner 6c, the hair dryer 6d, and the microwave oven 6e that do not cause much trouble are connected to the outlet 3
The adapter 2 is attached to each plug, and each plug is connected through this adapter 2.

Next, the structure of the breaker 1 will be described with reference to FIG.

The breaker 1 includes a power receiving terminal 11 to which an outdoor service wire 5 is connected and a power transmitting terminal 12 to which the indoor wiring 4 is connected.
And a circuit breaker 13, a current detector 14, and a transmitter 15 provided between them, and a CPU 1 for controlling them.
6, a ROM 17, a RAM 18, a clock 19, and an input device 21 as storage means are attached.

The breaker 13 cuts off the power supply between the power receiving terminal 11 and the power transmitting terminal 12, and the current detector 14
Is a detection means for detecting the value of the current flowing between them.

In the transmitter 15, as shown in FIG. 4, the wiring connected to the power supply side is branched into two circuits A and B, the circuit A is connected to the output terminal 22 through the CMOS 15a, and the circuit B is connected to the CMOS 15b. It is connected to the output terminal 22 via the connected transformer 19. In this transformer 15c, the winding ratio is 90 on the secondary side with respect to the primary side 100, and 90V is obtained at the output terminal. Furthermore, CMOS1
The buffer 5a and the CMOS 15b are connected to the CPU 16 through the buffer IC 15d, and a voltage of about 5V is applied based on a control signal from the CPU 16 so that the buffer I
The circuit A and the circuit B are switched by C15d to generate a cutoff signal and a return signal.

The cutoff signal has a waveform as shown in FIG.
When a signal having the same waveform as the cutoff signal is sent from the CPU 16 to the buffer IC 15d shown in FIG.
The MOS 15b is switched according to the signal from the CPU 16. The switching timing is about 100 msec. As a result, if the CMOS 15a is turned on, 100V is directly connected to the output terminal 22 and 100V is output to the output terminal 22, and when the CMOS 15b is turned on, the voltage of 90V stepped down by the transformer 15c is output. , 100 V and 90 V are generated according to the waveform of the signal from the CPU 16, and are transmitted from the power transmission terminal 12 to which the output terminals 22 of the circuits A and B are connected.
The same applies to the transmission of the return signal.

The ROM 17 stores the contracted current of the breaker 1,
The identification number of each adapter, the power-on / off order of each adapter, a predetermined time for restoration, and a shutoff signal and a restoration signal to be transmitted to the adapter 2 are stored. The CPU 16 compares the current value detected by the current detector 14 with the contract current stored in the ROM 17, and when the detected current value exceeds the contract current, issues an instruction to cut off the energization of the adapter 2. As described above, the data is sent to the transmission device 15 via the buffer IC 15d in accordance with the power supply interruption order. Then, the cutoff signal is attached with the identification number of the corresponding adapter 2 in accordance with the energization cutoff order stored in the ROM 17, and is transmitted. Further, when the total current value detected by the current detector 14 still exceeds the contracted current after the adapter 2 is instructed to cut off, a cutoff signal is sent to the breaker device 13 to stop the energization of the breaker 1. It is like this.

Further, the CPU 16 transmits a cutoff signal to the adapter 2, and when the detected current becomes equal to or less than the contract current as a result, a return signal for sequentially returning the cutoff after a predetermined time has passed from the cutoff to the corresponding adapter 2. Send. And
When the current value detected by the current detector 14 rises due to the restoration of the adapter 2, the shutoff signal is transmitted again from the transmitter 15 to shut off the restoration of the adapter 2.

Next, the structure of the adapter 2 will be described with reference to FIG.

As shown in FIG. 3, the adapter 2 is provided with a power receiving terminal 31 to be plugged into the outlet 3 and a power transmitting terminal 32 to which a plug such as an electric appliance 6a is connected, and a breaker 33 and a receiver 35 are provided between them. Further, it is composed of a CPU 36 for controlling them. The blocking device 33 is C
According to an instruction from the PU 36, the power supply between the power receiving terminal 31 and the power transmitting terminal 32 is cut off.

In addition to the receiving device 35, the CPU 36 has a ROM 37, a RAM 38, and a clock 3 for synchronization.
9, the warning device 40, and the return device 41 are connected.

As shown in FIG. 6, the receiving device 35 is internally provided with a voltage determining IC 35a used for an AC tester or the like, measures the voltage at intervals of 25 msec, and sends the result to the CPU 36. A cutoff signal and a return signal are stored in the ROM 37.

The restoring device 41 is a device for releasing the interruption of the interruption device 33, and can be restored through the CPU 36, or the interruption device 33 can be operated directly by hand.

In the CPU 36, the receiver 35 is the breaker 1
When the cutoff signal or the return signal from the
Operate. That is, in receiving the signal, when the voltage determination IC 35a in the receiving device 35 reads the change in the voltage from the breaker 1 and the data is sent to the CPU 36,
In the CPU 36, for example, if the voltage value is 100V, the flag is set to 1 based on the data, if the voltage value is 90V, the flag is set to 0, and the result is sequentially assigned to, for example, 32 bits, and based on the data. The change in voltage is calculated every 100 msec. Then, the calculated value is stored in the ROM
The waveforms of the cutoff signal and the return signal stored in 37 are compared, and when the waveforms match, it is determined as the cutoff signal or the return signal, the cutoff device 33 is operated, and the power supply to the connected equipment is stopped. Let it come back again.

Next, the operation of the power cutoff system will be described with reference to the flowchart of FIG.

First, the adapter 2 which can be cut off when the total amount of electric power used exceeds the contract current
Attach. That is, the plugs of the air conditioner 6c, the hair dryer 6d, and the microwave oven 6e of FIG. 1 are inserted into the power transmission terminal 32 of the adapter 2, and the power reception terminal 31 is inserted into the outlet 3 of each place. Furthermore, each device 6
The breaker 1 is set to have a current-carrying interruption order for each of c, 6d, and 6e. To set the energization / interruption order, the identifiers of the individual adapters 2 may be input from the input device 21 according to the energization / interruption order and stored in the RAM 18 of the breaker 1. Further, the order is determined in advance for the adapter 2. When the identifier is stored in the ROM 17 of the breaker 1, the adapter 2 may be attached to the device 6c or the like according to the order.

Use is started from this state. First, a predetermined time T from interruption to recovery is read from the ROM 37 (F-1), and the current detector 14 detects the current (F-
2) Compare the detected current with the contract current (F-3).
When the detected current exceeds the contracted current, the breaker 1 and the adapter 2 perform a shutoff process (F-
4), go to step (F-5).

The interruption process by the breaker 1 and the adapter 2 in steps (F-2) to (F-4) will be described in more detail with reference to FIG.

First, step (F-1) is completed, the power supply interruption order is set (G-1), and the maximum number N of adapters 2 is stored in the RAM 18 (G-2). Next, in the breaker 1, when a current value is input from the current detector 14 (G-3), it is compared with the contract current (G-
4) If the contract current is not exceeded, proceed to step (F-6) in FIG. On the other hand, if it is determined that the detected current value exceeds the contract current, i is set to 1 (G-5), and the setting order i, that is, the adapter 2 having the energization cut-off order 1 is cut off. So that the cutoff signal is transmitted by the transmitter 1
5 to the adapter 2 (G-6). as a result,
The adapter 2 having the power supply interruption priority of 1 is cut off, and power supply to the electric appliances connected thereto is stopped. If the power supply is cut off in this way, it is again determined whether or not the current value exceeds the contract current (G-7), and if not, the process proceeds to step (F-5) in FIG. 7. On the other hand, when the detected current still exceeds the contract current, the process proceeds to step (G-8).

In step (G-8), i is compared with N. If i has not reached N, the process returns to step (G-6) through step (G-9), and then step (G-6). ) Perform the same work as above. That is, in step (G-9), i is sequentially increased by 1 to shut off the adapter 2 in accordance with the power-supply shutoff order. If the power consumption falls within the contract current, the step (G-
Return to 1) and shift to normal power supply. On the other hand, step (G
In step 8-8, when i reaches N, there are no more adapters 2 that can be shut off. Therefore, if the current value still exceeds the contract current at this stage, the CPU 16
Sends an interruption signal to the breaking device 13 to cut off the breaker 1.

In this way, when the current value exceeds the contract current, the adapters 2 are sequentially shut off in accordance with the set energization / shutdown order, and if the current value falls within the contract current in the middle, the importance is low. The power supply to the breaker 1 itself is not cut off by simply cutting off the power supply to equipment such as the air conditioner 6c and the dryer 6d, etc., and it is possible to make a contract with a small contract current, and to energize the adapter 2 stored in the ROM 16. If the current value exceeds the contracted current even if all of the above are cut off, the breaker 1 is cut off, so that a large current does not continue to flow and an accident such as a fire is surely prevented.

Next, the return operation of the adapter 2 will be described with reference to FIG.
Returning to the flowchart of FIG.

From step (F-4) to step (F-
The time to move to 5) is when the detected current falls below the contract current at the stage when the adapters 2 up to a certain rank are shut off. Therefore, the identification number and the shutoff time of each of the shut down adapters 2 are stored in the RAM 18. Remember. Then, the process returns to step (F-2).

On the other hand, in step (F-3), when it is determined that the detected current does not exceed the contract current, it is determined whether or not there is any adapter 2 that has already been shut down (F-6), and it is not present. Then, the process returns to step (F-2). However, when there is an interrupted adapter 2, it is determined whether or not there is an adapter 2 that has passed a predetermined time T from the time of interruption to the current time (F- 7). If there is no adapter 2 for which the predetermined time T has passed, the process returns to step (F-2).
If there is an adapter 2 for which a predetermined time T has elapsed at this point after being cut off, the power supply to the adapter 2 is restored (F-8).

After the restoration, it is judged whether or not the detection current in the current detector 14 has increased (F-9). If there is no increase in the detection current, the identification number of the restored adapter 2 is removed from the memory. (F-10), Step (F-2)
Return to. When the detected current increases, the restored adapter 2 is shut off again. Then, the identification number and the cutoff time are stored, a warning is issued to the adapter 2, and the process returns to step (F-2).

With this configuration, when the predetermined time T elapses after the adapter 2 is cut off, the power supply to the adapter 2 is automatically restored and the user's trouble is saved. Then, when the adapter 2 is restored, the increase in the detected current is detected, and if the current is increasing, the restored adapter 2 is shut off again and a warning is issued, so that the adapter 2 is shut off. If the device is still switched on after the
Accidents such as fire can be prevented, and if the user cuts off the switch of the device by a warning, the cutoff is automatically restored.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

The same reference numerals as those in FIGS. 2 and 3 denote the same components, and the description thereof will be omitted.

The breaker 1 has a CPU 4 as shown in FIG.
6, a breaker 13, a current detector 14, and a CPU 46
A ROM 47, a RAM 48, a transmitter 55, and a receiver 56 are connected to the. In addition to the contract current, the ROM 47 stores an identification number as an identifier of each adapter 2, an energization interruption order, and an interruption signal. The transmitting device 55 and the receiving device 56 both use wireless means, and transmit and receive signals to and from the adapter 2 through the antenna 57.

As described in the first embodiment, the CPU 46 sequentially shuts off the adapters 2 in accordance with the energization / shutdown order when the current detected by the current detector 14 exceeds the contract current, and further contracts. If the current exceeds the current, the circuit breaker 1 of the breaker 1 is activated, and if the contract current is less than the contract current due to the interruption of the adapter 2, a recovery signal is sequentially issued to the adapter 2 after a lapse of a predetermined time to recover. Let

Furthermore, when a return prohibition signal indicating that the connected equipment is still switched on is transmitted from the adapter 2, the adapter 2 that has transmitted the return prohibition signal returns to the return state. It is said that no signal is transmitted.

On the other hand, as shown in FIG. 10, the adapter 2 has a CPU 66, a breaking device 33, and a current detector 34. The CPU 66 has a ROM 67, a RAM 68, a restoring device 41, a transmitting device 75, and a receiving device 76. The warning device 40 is connected. The ROM 67 stores the identification number of the identifier of the adapter 2, a warning signal, a return signal, a waiting time t, and a shutoff signal. The restoring device 41 is a device for canceling the shutoff of the shutoff device 33 and is restored through the CPU 66. Alternatively, the shutoff device 33 can be directly operated manually. The waiting time t is shorter than the predetermined time T.

Both the transmitting device 75 and the receiving device 76 use wireless means, and transmit and receive signals to and from the breaker 1 through the antenna 77.

Upon receipt of the cutoff signal from the breaker 1, the CPU 66 actuates the cutoff device 33 to cut off the energization.
Then, this interruption time is stored in the RAM 68, and the interruption device 33 is temporarily restored when the elapsed time after interruption reaches the standby time t, and the change in current is detected by the current detector 34.
Receive from. At this time, when it is detected that a current flows through the current detector 34, it is recognized that the device connected to the adapter 2 is still switched on, and a return prohibition signal to that effect is sent to the transmitting device. From 75, the identifier of the adapter is attached and transmitted to the breaker 1.

Even with such a configuration, similarly to the power supply cutoff system described above, when the device connected to the adapter 2 remains switched on, the cutoff adapter 2 does not return, and a fire or the like occurs. Accidents can be prevented, and the breaker 1 is determined by the adapter 2 which can be restored in advance.
The adapter 2 can be returned unconditionally.

As another embodiment, the adapter 2 which has been confirmed that the connected equipment is still switched on may not be restored by the return signal from the breaker 1. In this case, the breaker 1 does not need a means for storing the return condition of the adapter 2, and it suffices to simply issue a return signal to the adapter 2 after a predetermined time has elapsed.

Further, in the above embodiment, the communication means such as the transmitter 75 is wireless. However, the present invention is not limited to this, and the transmitter 75 is connected to the indoor wiring 4 and a high frequency signal is applied thereto. You may comprise so that it may be mounted. In that case, the transmitting / receiving devices of the breaker 1 and the adapter 2 are provided with the waveform analysis calculation function and the like to exchange signals. For example, a signal of several frequencies of 1 kHz or higher is placed on the indoor wiring 4, frequency analysis is performed on the receiving side that receives the signal, and the meaning of the signal is analyzed based on predetermined corresponding conditions. Then, a method of performing a predetermined operation, for example, shutting off or transmitting information can be considered. When this method is used, the voltage fluctuates, but it does not fluctuate so much as to impair the actual efficiency. Since the frequency used is high and is in the so-called noise range, the influence on the instrument is very small.

[0050]

According to the power cutoff system of the present invention, when the current value exceeds the contract current, the adapters are sequentially cut off in accordance with the power cutoff order to prevent the breaker from operating, and the load on the equipment due to the breaker cutoff. Etc. can be reduced. Also,
If the current value still exceeds the contract current, the breaker will be cut off, so even if the contract current is exceeded, power supply to all appliances will not be stopped immediately, so the inconvenience due to power failure can be eliminated and small contract It is economical to contract with electric current,
In addition, the inflow of a large current is blocked by the breaker, so an accident such as a fire can be prevented. Furthermore, when the current drops within the contract current due to the interruption of the adapter, the interrupted adapter is restored to the current after a lapse of a predetermined time, and the user does not have to individually restore the power, and the adapter can be restored. If there is an increase in the current, the adapter will not be restored, so that the adapter with the device switched on will not be restored and a fire or the like can be prevented.

[Brief description of drawings]

FIG. 1 is a diagram showing an entire power supply interruption system of the present invention.

FIG. 2 is a block diagram showing a configuration of a breaker.

FIG. 3 is a block diagram showing a configuration of an adapter.

FIG. 4 is a diagram showing a breaker transmission device.

FIG. 5 is a diagram showing a cutoff signal.

FIG. 6 is a diagram showing a receiving device of an adapter.

FIG. 7 is a flowchart showing the operation of the power supply interruption system of the present invention.

FIG. 8 is a flowchart showing the operation of the power supply interruption system of the present invention.

FIG. 9 is a block diagram showing a configuration of a breaker.

FIG. 10 is a block diagram showing a configuration of an adapter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Breaker 2 Adapter 3 Outlet 4 Indoor wiring 5 Service wire 6a to 6e Electric equipment 11, 31 Power receiving terminal 12, 32 Power transmitting terminal 13, 33 Breaker 14, 34 Current detection device 15 Transmitter 16, 36 CPU 17, 37 ROM 18, 38 RAM 35 receiver 39 clock 41 recovery device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication location H02H 3/093 (72) Inventor Toshige Masuko 2174 C-608, Koyocho, Tokorozawa, Saitama Prefecture (72) Inventor Mitsunori Komaki 2-4-17-705 Sarue, Koto-ku, Tokyo (72) Inventor Kanako Nakayama 7-39-10 Koganehara, Matsudo City, Chiba Prefecture

Claims (3)

[Claims] 1. A breaker and a plurality of adapters connected to respective outlets, wherein the breaker has first current detection means for detecting a total current flowing through the breaker, and a signal is transmitted to the adapter. A first transmitting means for disconnecting the power supply to the breaker itself; a storage means for storing a contract current, a predetermined time for restoration, a power supply disconnection order of the adapter, and an identifier of the adapter; When the current value exceeds the contract current, the first transmission means sequentially sends a cutoff signal to the corresponding adapters according to the energization cutoff order to cut off the energization of the adapters, and all the adapters are energized. When the current value exceeds the contract current even after the interruption, the first interruption means is operated to stop the power supply, and the predetermined time has elapsed from the interruption. And a first control means for shutting off the adapter again when the detection current of the first current detection means rises due to the restoration operation, and the adapter is provided with a signal from the breaker. Receiving means, a second shutoff means for shutting off the power supply to the adapter, a restoring means for restoring the shutoff state of the adapter, a storage means for storing the identifier of the adapter, and a shutoff signal from the breaker. If you do the second
And a second control means for activating the cutoff means and activating the return means when the return signal is received. 2. A breaker and a plurality of adapters connected to respective outlets, wherein the breaker has first current detection means for detecting a total current flowing through the breaker, and a signal is transmitted to the adapter. A first transmitting means for disconnecting the power supply to the breaker itself; a storage means for storing a contract current, a predetermined time for restoration, a power supply disconnection order of the adapter, and an identifier of the adapter; When the current value exceeds the contract current, the first transmission means sequentially sends a cutoff signal to the corresponding adapters according to the energization cutoff order to cut off the energization of the adapters, and all the adapters are energized. When the current value exceeds the excess allowable amount even after the interruption, the first interruption means is operated to stop the power supply, and the predetermined time has elapsed from the interruption. And a first control means for transmitting a return signal from the first transmitting means for returning the power supply of the adapter to the adapter, the adapter having receiving means for receiving a signal from the breaker, and the power supply of the adapter. Second shut-off means for shutting off the power, return means for restoring the shut-off state of the adapter, second current detection means for detecting the current flowing through the adapter, identifier of the adapter, shorter than a predetermined time for the return Storage means for storing a standby time; and the second means when a cutoff signal from the breaker is received.
When the cutoff means is activated, the return means is temporarily activated at the time when the standby time has elapsed after the interruption of the energization, and when the second current detection means detects the flow of current, it is transmitted from the breaker. And a second control unit that does not operate the returning unit depending on the returning signal. 3. The adapter includes second transmitting means for transmitting a signal to the breaker, and the second control means restores a current flow when the return means temporarily restores the current flow. The breaker has a function of transmitting a prohibition signal from the second transmission means to the breaker, and the first control means of the breaker has a function of not transmitting a return signal to the adapter when the return prohibition signal is received from the adapter. It provided, Comprising: 2
The power cutoff system described in.