JP2018093698A - Seismic sensing interruption system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismic sensing interruption system for securely stopping outlet output upon the occurrence of an earthquake, even if the system does not receive external signal for controlling interruption of an outlet unit with an interruption function.SOLUTION: A seismic sensing relay 3 includes: an external communication section 38 for outputting an earthquake detection signal instantaneously when detecting an earthquake having a seismic intensity equal to or larger than a predetermined seismic intensity; an outlet unit 12 which is provided with an interruption function and is connected some of branch electric paths, the outlet unit including an interruption mechanism 122 for stopping output of an outlet 121, a signal input terminal 125 for receiving an interruption signal from the outside, an earthquake detection section 126 for detecting the occurrence of an earthquake, and an outlet unit CPU 129 for causing the interruption mechanism 122 to perform interruption operation; and a seismic sensing communication unit 5 for outputting the interruption signal to the outlet unit 12 with the interruption function, when receiving an earthquake detection signal. When receiving the interruption signal or detecting an earthquake, the outlet unit CPU 129 causes the interruption mechanism 122 to perform the interruption operation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seismic isolation system that has an seismic function and interrupts at least a part of an electric circuit when an earthquake of a predetermined seismic intensity or higher occurs.

In order to prevent the occurrence of energized fires, distribution boards that install a seismic device (seismic relay) on the distribution board and shut off the main breaker when an earthquake of a certain seismic intensity or more occurs are spreading. For example, in Patent Document 1, a seismic relay equipped with a leakage output unit is installed that generates a pseudo-leakage after a certain period of time after receiving an earthquake in the distribution board to shut off the main breaker, that is, to implement a delay break. Then, after a certain time, all the branch electric circuits were interrupted.
On the other hand, there is an outlet unit with a blocking function provided with a function of blocking the outlet output in the outlet unit provided on the wall surface (see, for example, Patent Document 2).

JP2015-173522A JP 2006-351207 A

The above distribution board equipped with a seismic relay has a signal output unit that outputs a signal immediately when the occurrence of an earthquake is detected, in addition to a leakage output unit that generates a pseudo-leakage with a delay. It was possible to immediately shut off only a specific branch breaker by a signal from the section.
However, even if the branch breaker connected to the electrical device that wants to be shut off immediately when an earthquake occurs is used as this specific branch breaker, there are other electrical devices connected to the end of the branch circuit. The power was cut off.
Therefore, it is possible to cut off the power supply of only a specific electrical device by using the outlet unit with a cutoff function as disclosed in Patent Document 2 without relying on the branch breaker. In addition to the installation of the seismic relay, the use of an outlet unit equipped with this disconnection function is being considered following the branch circuit.

  In this case, if there are multiple electrical devices that are preferably shut off immediately, multiple outlet units with a shut-off function are also required. However, if a fault occurs in the seismic relay or its output signal line, the outlet unit is provided with a shut-off function. But it will not work. Therefore, it is considered preferable to provide an outlet unit with an earthquake detection function so that if an earthquake is detected without relying on an external signal, the outlet can be cut off immediately and the electric circuit can be cut off without fail.

  Therefore, in view of such problems, the present invention provides a seismic shut-off system that reliably stops the outlet output in response to the occurrence of an earthquake even if there is no external signal for controlling the shut-off of the outlet unit with a shut-off function. It is an object.

In order to solve the above-mentioned problem, the invention of claim 1 is directed to a main circuit breaker for interrupting a main electric circuit connected to a commercial power source, and a plurality of electric circuits for interrupting a branch electric circuit branched from the secondary side of the main circuit breaker. The seismic relay system is equipped with a branch breaker and a seismic relay that detects the occurrence of an earthquake. Has an earthquake detection signal output unit that immediately outputs an earthquake detection signal when an earthquake of a predetermined seismic intensity or higher is detected, in addition to a delay cutoff output unit that performs delay cutoff, while some branch circuits have an outlet A shut-off mechanism that stops output, an earthquake detection means that detects the occurrence of an earthquake, and a shut-off control section that shuts off the shut-off mechanism when receiving an interrupt signal or when the earthquake detection means detects an earthquake. When a seismic relay receives an earthquake detection signal from the seismic relay, it is equipped with a seismic communication unit that outputs a shut-off signal to the seismic relay unit. The control unit is characterized in that when the earthquake detection means detects an earthquake, or receives a cutoff signal output from the seismic communication unit, the cutoff mechanism operates to shut down.
According to this configuration, since the outlet unit with a blocking function itself detects an earthquake and performs a blocking operation, even if a connection failure or disconnection occurs between the seismic relay and the seismic communication unit, certain electrical equipment can be reliably Can be immediately shut off.

According to a second aspect of the present invention, in the configuration of the first aspect, a plurality of outlet units with a cutoff function are provided, and a cutoff signal is received between the seismic communication unit and the outlet unit with a cutoff function. Each outlet unit with a shut-off function has a shut-off signal generator that generates a shut-off signal when its own earthquake detection means detects an earthquake occurrence, and a generated shut-off signal. The outlet control unit has a signal output terminal that outputs to the outlet control unit, and the outlet control unit operates to shut off another outlet unit with a blocking function when receiving a blocking signal from any outlet unit with a blocking function. .
According to this configuration, even if a plurality of outlet units with a blocking function are provided, if any outlet unit with a blocking function detects an earthquake and performs a blocking operation, the other outlet units with a blocking function also perform a blocking operation all at once. Therefore, even if there is an outlet unit with a shut-off function in which the earthquake detection means does not function, it can be reliably shut-off in response to the occurrence of an earthquake and can be relieved.

According to a third aspect of the present invention, in the configuration according to the first or second aspect, the outlet unit with a blocking function includes a tracking detection unit that detects a tracking phenomenon of the outlet, and the blocking control unit detects that the tracking phenomenon is detected. The shut-off mechanism is operated to shut off.
According to this configuration, since the outlet unit with a blocking function performs a blocking operation even when tracking occurs in addition to the occurrence of an earthquake, it is possible to reliably prevent the occurrence of an energizing fire.

According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, a part of the branch breaker is a breaker with an external cutoff function that receives an operation signal from the outside and performs a cutoff operation. When the unit receives an earthquake detection signal from the seismic relay, the unit immediately sends an operation signal to the breaker with an external cutoff function to perform the cutoff operation.
According to this configuration, when an earthquake occurs, some branch breakers are immediately shut off, so even without using an outlet unit with a shut-off function, it is possible to immediately shut off electric stoves that are prone to fire due to the occurrence of an earthquake. Can prevent the occurrence of fire.

  According to the present invention, since the outlet unit with a blocking function itself detects an earthquake and performs a blocking operation, even if a connection failure or disconnection occurs between the seismic relay and the seismic communication unit, it is ensured that a specific electric device Can be immediately shut off.

It is a system configuration figure showing an example of a seismic isolation system concerning the present invention. It is a block diagram of a seismic relay. It is a block diagram of a communication measurement unit. It is a block diagram of a seismic communication unit. It is a circuit diagram of an outlet control unit. It is connection explanatory drawing of an outlet socket control unit. It is a block diagram of an outlet unit with a blocking function.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of a seismic isolation system according to the present invention. 1 is composed of a single-phase three-wire circuit (voltage phases X and Y and neutral phase N) drawn into a dwelling unit. A main breaker with a commercial power source connected to the primary side, 2 is a branch breaker for cutting off individual branch circuits branched from a main circuit M formed on the secondary side of the main breaker 1, and 3 is a predetermined seismic intensity or more When an earthquake is detected, an earthquake detection relay that outputs an earthquake detection signal and generates a pseudo-leakage in the main circuit M, 4 is a communication measurement unit that transmits information on the power used in the dwelling unit to the external HEMS device 11, and 5 is an earthquake detection. A seismic communication unit that receives a seismic detection signal output from the relay 3 and shuts off a specific branch breaker 2 and outputs a shut-off signal to the outside, and 6 has a plurality of shut-off functions provided at the end of the branch circuit Shut off the outlet unit 12 It is an electrical outlet control unit to work.
The main breaker 1 operates when an overcurrent exceeding the contract current flows through the main circuit M, and the branch breaker 2 operates when a current exceeding a predetermined current such as 20 amperes flows through the branch circuit.

  HEMS is an abbreviation for Home Energy Management System. It is connected to home appliances and electrical equipment to “visualize” usage of electricity and gas on a monitor screen and to “automatically control” home appliances. This is a known system. And the HEMS apparatus 11 is one apparatus which comprises HEMS, for example, is an apparatus provided with display functions, such as a tablet terminal. The outlet unit 12 with a blocking function includes a blocking mechanism section that blocks the electric circuit, and has a function of blocking the outlet output by an external signal (here, a signal from the seismic communication unit 5).

A branch breaker 2 is installed for each branch circuit, and is not subjected to control by an external signal (a group of first breakers 2a), and a breaker group (a second breaker 2b) that performs a cutoff operation under the control of the seismic communication unit 5. Group) and two groups.
For this reason, the first breaker 2a is a branch breaker having a simple structure as compared with the prior art, but the second breaker 2b is an external device having an external input terminal (not shown) for inputting a control signal of the seismic communication unit 5. Breaker with shut-off function.

  The seismic relay 3, the communication measurement unit 4, the seismic communication unit 5, and the outlet control unit 6 are assembled inside the distribution board B. The seismic relay 3, the communication measuring unit 4, and the seismic communication unit 5 are connected to the main breaker 9 constituting the main electric circuit M arranged on the secondary side of the main breaker 1, and the first breaker 2 a and the second breaker 2. Power is supplied by being connected together with the breaker 2b. On the other hand, the outlet control unit 6 is composed only of wiring and terminals as will be described later, and does not require a power source.

  The seismic relay 3 is connected to one voltage phase Y on the primary side of the main breaker 1 via the transmission line L1, and is connected to the seismic communication unit 5 via the transmission line L3. The seismic communication unit 5 is connected to the communication measurement unit 4 via the transmission line L4, and is connected to the outlet control unit 6 via the transmission line L6.

FIG. 2 shows a block diagram of the seismic relay 3. As shown in FIG. 2, the seismic relay 3 includes an acceleration sensor 31 that detects a shake and outputs a signal corresponding to the magnitude, a seismic intensity setting unit 33 that sets a seismic intensity that is determined to be an earthquake, and a certain time from the occurrence of the earthquake. A cutoff time setting unit 34 for setting a time for delaying cutoff operation of the main breaker 1 by generating a pseudo leak later, a pseudo leak output unit 35 for generating a pseudo leak, a buzzer 36a for issuing an alarm sound, an LED 36b for notifying of light emission, Test / reset button 37 for testing / resetting the earthquake detection operation, external communication unit 38 for outputting an earthquake detection signal when it is determined that an earthquake has occurred, and determining the seismic intensity of the earthquake from the output of the acceleration sensor 31, and exceeding the set seismic intensity If it is determined that the earthquake has occurred, it is determined that an earthquake has occurred and various control signals are output, and an MCU (Micro Controller Unit) 39 for controlling the seismic relay 3 as a whole is provided. To have.
The MCU 39 is a memory 39a such as a ROM or a RAM, and an integrated circuit incorporating peripheral functions such as I / O. The memory 39a has a set seismic intensity threshold, a delay cutoff time for generating a pseudo-leakage, and the like. Is memorized.

  The pseudo-leakage output unit 35 is connected to one voltage phase Y of the main circuit M on the primary side of the main breaker 1 by the transmission line L1. Further, an external communication unit 38 is connected to the seismic communication unit 5 via the transmission line L3. The external communication unit 38 includes an interface circuit that transmits a predetermined signal from the outside to the MCU 39 in addition to the signal output to the outside.

  In the seismic relay 3, a seismic intensity (predetermined seismic intensity) is set by the seismic intensity setting unit 33 to output an earthquake detection signal. The interruption time setting unit 34 sets a time for delay interruption by generating a pseudo electric leakage. For example, when the MCU 39 determines that an earthquake has occurred, an earthquake detection signal is immediately output from the external communication unit 38, but for example, the pseudo-leakage output unit 35 outputs a certain time (for example, 3 minutes) after outputting the earthquake detection signal. After elapses, a pseudo-leakage signal for generating a pseudo-leakage in the main electric circuit M is output. When the earthquake detection signal is output, the buzzer 36a sounds and the LED 36b blinks.

  In addition to controlling the seismic relay 3 as a whole, the MCU 39 communicates with the external HEMS device 11 via the external communication unit 38 via the seismic communication unit 5 and the communication measurement unit 4 to perform setting operations from the outside. Is possible. For example, when the seismic intensity information that is detected in addition to the transmission of the earthquake detection signal is transmitted to the HEMS device 11 and the seismic intensity setting that is a threshold for outputting the earthquake detection signal from the HEMS device 11 is made, the external communication unit 38 is used. The delay time is set.

  Here, the pseudo-leakage signal output from the pseudo-leakage output unit 35 of the seismic relay 3 will be described. By connecting the pseudo earth leakage output unit 35 to the primary side of the main breaker 1 via the transmission line L1, an electric circuit that does not pass through the main breaker 1 between the secondary side electric circuit and the primary side electric circuit of the main breaker 1 (simulated When the seismic relay 3 is turned on and energized, the main circuit breaker 1 determines that a leakage has occurred and performs a cut-off operation. Here, it is assumed that this on operation outputs a pseudo-leakage signal.

FIG. 3 shows a block diagram of the communication measurement unit 4. As shown in FIG. 3, the communication measurement unit 4 is installed in the main current sensor 13 for detecting the current flowing through the main breaker 1 and the branch current sensor 14 for detecting individual branch currents installed in the individual branch breakers 2. The input current information input unit 41, the internal communication IF 42 to which the seismic communication unit 5 is connected, the external communication IF 43 that communicates with the HEMS device 11 through, for example, LAN connection, and the power consumption of the entire dwelling unit and the individual A communication measurement unit CPU 44 and the like for calculating the power consumption of the branch circuit and controlling the entire communication measurement unit 4 are provided.
In addition, 21 is an extended measurement unit that measures the generated power and outputs data to a distributed power generation device such as solar power generation (not shown), and 22 is a pulse measurement unit that calculates the amount of water / gas used. The measurement unit is also connected to the internal communication IF 42, and the generated power information and water / gas usage data received by the communication measurement unit CPU 44 are transmitted to the HEMS device 11.

  In this way, the communication measurement unit 4 transmits power usage information, generated power information, and water / gas usage information to the connected external HEMS device 11. The communication measurement unit CPU 44 manages the communication between the HEMS device 11 and the seismic relay 3, and senses such as earthquake detection signals and seismic intensity information output from the seismic relay 3 received via the seismic communication unit 5. When the seismic information is transmitted to the HEMS device 11, the seismic communication unit 5 is received from the HEMS device 11 when a setting signal such as a predetermined seismic intensity setting for determining the occurrence of the earthquake of the seismic relay 3 or a delay operation time setting is received. Is transmitted to the seismic relay 3 via.

  FIG. 4 shows a block diagram of the seismic communication unit 5. As shown in FIG. 4, the seismic communication unit 5 includes a first communication IF 51 that communicates with the seismic relay 3 via the transmission line L3, a second communication IF 52 that communicates with the communication measurement unit 4 via the transmission line L4, In response to the detection signal, a first output unit 53 that outputs an operation signal for immediately shutting off a specific branch breaker (group of second breakers 2b) 2, an outlet unit 12 with a shut-off function (hereinafter simply referred to as “outlet unit”) A second output unit 54 that outputs a shut-off signal for shut-off), an LED 55 that displays a state, a seismic communication unit CPU 56 that controls the seismic communication unit 5, and the like.

  The first output unit 53 is connected to the second breaker 2b via the transmission line L5, and the second output unit 54 is connected to the outlet control unit 6 via the transmission line L6. A plurality of outlet units 12 are connected via the outlet control unit 6 and their blocking operation is controlled.

  The operation signal output from the seismic communication unit 5 to the second breaker 2b is an a-contact signal, and the second breaker 2b receives the a-contact signal and performs a blocking operation. The second breaker 2b has an external output terminal (not shown) for relaying an operation signal to the other second breaker 2b and is connected to each other by a signal line. When any of the groups 2b receives an operation signal from the seismic communication unit 5 and performs a blocking operation, the other second breaker 2b is also configured to perform a blocking operation at the same time.

  The seismic communication unit CPU 56 manages communication between the HEMS device 11 and the seismic relay 3, and performs a predetermined seismic intensity setting of the seismic relay 3 received from the HEMS device 11 via the communication measurement unit 4. A setting signal is transmitted to the seismic relay 3. At this time, the seismic relay 3 is converted into a signal that can be recognized and transmitted.

FIG. 5 is a circuit diagram of the outlet control unit 6, and FIG. 6 is a connection explanatory diagram of the outlet control unit 6. As shown in FIG. 5, the outlet control unit 6 includes a control input terminal 61 and a transmission line L7 that are connected to the second output unit 54 of the seismic communication unit 5 via the transmission line L6. A plurality of control output terminals 62 to be controlled are provided. Each terminal has a “+” terminal and a “−” terminal, the control output terminals 62 are connected in series, and both ends connected in series are connected to the control input terminal 61.
As a result, when the b contact signal is output from the second output unit 54 of the seismic communication unit 5, this signal, that is, the b contact signal is output from each control output terminal 62.

FIG. 7 shows a block diagram of the outlet unit 12. As shown in FIG. 7, the outlet unit 12 includes a blocking mechanism 122 that blocks a branch electric circuit leading to an outlet 121 to which a plug (not shown) provided on a power supply line of a load is connected. Then, in response to a cut-off signal output from the seismic communication unit 5), the output of the outlet 121 is stopped.
Further, a power trip circuit 123 that shuts off the trip mechanism 122 (trip operation), a tracking detection unit 124 that detects a tracking phenomenon at the outlet 121, a signal input terminal 125 that inputs a trip operation signal from the outside, an earthquake detection unit 126, A test switch 127 for performing a test operation, a stop switch 128 for returning the operation state to the initial state, an outlet unit CPU 129 for controlling the outlet unit 12, a power supply circuit 130, and the like are provided.
The earthquake detection unit 126 includes an acceleration sensor as in the case of the seismic relay 3 and outputs a signal proportional to the seismic intensity to the outlet unit CPU 129.

The signal input terminal 125 is a b-contact input unit having a b-contact. Upon receiving a b-contact signal as a cut-off signal output from the outlet control unit 6, the outlet unit CPU 129 performs cut-off control. Specifically, the outlet unit CPU 129 receives the b contact signal, activates the power trip circuit 123, trips the blocking mechanism 122, and blocks the output of the outlet 121.
Also, the outlet unit CPU 129 trips the shut-off mechanism 122 in the same manner when the tracking detection unit 124 detects a tracking phenomenon, and further determines from the signal output from the earthquake detection unit 126 that a shake greater than a preset seismic intensity has occurred. The shut-off mechanism 122 is shut off.
In addition, the outlet unit CPU 129 turns on the b contact of the signal input terminal 125 when the earthquake detection unit 126 detects an earthquake and shuts off. That is, a shutoff signal is output to the outlet control unit.

  The seismic isolation system configured as described above operates as follows in response to the occurrence of an earthquake. If an earthquake occurs in a state where commercial power is being supplied to the electrical equipment in the dwelling unit, the acceleration sensor 31 detects it and the MCU 39 determines the seismic intensity. When the determined seismic intensity is an earthquake equal to or greater than the seismic intensity set in advance by the seismic intensity setting unit 33 or the like as a threshold (for example, seismic intensity of 5 or less), the MCU 39 performs the following control.

First, an earthquake detection signal is immediately output from the external communication unit 38, the buzzer 36a rings, and the LED 36b blinks. Then, the output earthquake detection signal is transmitted to the seismic communication unit 5.
Thereafter, when a certain time (delay cut-off time) set in advance by the cut-off time setting unit 34 or the like has elapsed, the pseudo-fault leakage output unit 35 outputs a pseudo-fault. That is, the operation for generating a pseudo-leakage is started. As a result, the main breaker 1 is cut off, the main electric circuit M is cut off from the commercial power supply, and all branch electric circuits are cut off.

On the other hand, in the seismic communication unit 5 that has received the earthquake detection signal, an operation signal is output to the group of second breakers 2b connected to the first output unit 53 under the control of the seismic communication unit CPU56. Shut off operation. Further, a blocking signal is output from the second output unit 54 to the outlet unit 12 via the outlet control unit 6. As a result, before the main breaker 1 is cut off, all the outlet units 12 connected to the group of second breakers 2b and the outlet control unit 6 are cut off.
Furthermore, the seismic communication unit 5 transmits earthquake occurrence information to the communication measurement unit 4. The communication measurement unit 4 that has received the earthquake occurrence information transmits the information to the HEMS device 11.

  However, if the seismic intensity set by the earthquake detection unit 126 of the outlet unit 12 is smaller than the seismic relay 3, even if the seismic relay 3 does not output an earthquake occurrence signal, that is, the outlet control unit 6 has a cutoff signal. The outlet unit 12 performs a shut-off operation even if the signal is not output. If the seismic intensity threshold of the outlet unit 12 is set to be the same as or greater than that of the seismic relay 3, the operation is interrupted according to the earthquake occurrence signal of the seismic relay 3.

Further, the outlet unit CPU 129 performs the following control. Even if the shutdown signal is not output from the seismic communication unit 5 due to failure of the seismic relay 3 or poor connection, etc., if any of the outlet units 12 detects an earthquake and shuts down, the other outlet units 12 Shuts off all at once.
Specifically, when any outlet unit 12 is cut off, the outlet unit CPU 129 outputs a cutoff signal from the signal input terminal 125, opens the internal contact of the signal input terminal 125, and outputs the b contact signal. The This signal is transmitted to the outlet control unit 6 via the transmission line L7.
In the outlet control unit 6, the interruption signal is transmitted to all the other outlet units 12 connected in series in response to the input of the b contact signal, and the interruption operation is performed all at once.

As described above, since the outlet unit 12 itself detects an earthquake and shuts down, even if a connection failure or disconnection occurs between the seismic relay 3 and the seismic communication unit 5, the power supply of a specific electric device is surely obtained. Can be cut off immediately, and electric stoves that tend to cause fires can be cut off immediately and reliably.
Even if a plurality of outlet units 12 are provided, if any outlet unit 12 detects an earthquake and shuts off, the other outlet units 12 also shut off at the same time. Even if there are 12, there is a reliable shut-off operation in response to the occurrence of an earthquake, so you can feel safe.
Furthermore, since the outlet unit 12 performs a shut-off operation even when tracking occurs in addition to the occurrence of an earthquake, it is possible to reliably prevent the occurrence of an energizing fire.
In addition, since some branch breakers 2 are immediately shut off when an earthquake occurs, it is possible to immediately shut off electric stoves that are likely to cause a fire due to the occurrence of an earthquake without using the outlet unit 12 having a shut-off function. Can prevent the occurrence of fire.

  In the above-described embodiment, the outlet unit 12 receives the earthquake detection signal output from the seismic relay 3 via the seismic communication unit 5 and the outlet control unit 6 and operates to shut off. The terminals 125 may be connected in series. In that case, the outlet control unit 6 may not be used, and both ends connected in series may be directly connected to the seismic communication unit 5.

  1 ... Main trunk breaker 2 .... Branch breaker 2b ... Second breaker (breaker with external shutoff function) 3 .... Earthquake relay 5, 5.Earthquake communication unit 6, ... Outlet control unit 12, ..Outlet unit (outlet unit with cutoff function), 35..Pseudo-leakage output unit (delay cutoff output unit), 38..External communication unit (earthquake detection signal output unit), 44..Communication measurement unit CPU 61. Control input terminal 62, Control output terminal 121, Outlet 122, Shut-off mechanism 123 Power supply trip circuit 124 Tracking detection unit 125 Signal input terminal (signal output terminal) 126 ··· Earthquake detection unit (earthquake detection means) 129 · · Outlet unit CPU (interrupt control unit, interrupt signal generation unit), B · · Distribution board, M · · Main circuit.

Claims (4)

A main circuit breaker for interrupting a main electric circuit connected to a commercial power supply, a plurality of branch circuit breakers for interrupting a branch electric circuit branched from the secondary side of the main circuit breaker, and a seismic detection relay for detecting occurrence of an earthquake When the seismic relay detects an earthquake having a predetermined seismic intensity or higher, the seismic shut-off system delays the main breaker afterwards,
The seismic relay has an earthquake detection signal output unit that immediately outputs an earthquake detection signal when an earthquake of a predetermined seismic intensity or higher is detected, in addition to the delay cutoff output unit that performs the delay cutoff.
Some of the branch circuits have a shut-off mechanism that stops the outlet output, an earthquake detection means that detects the occurrence of an earthquake, and the shut-off mechanism is shut off when an interrupt signal is received from the outside or when the earthquake detection means detects an earthquake. A shut-off function outlet unit with a shut-off control unit to be operated is connected,
When receiving an earthquake detection signal from the seismic relay, comprising a seismic communication unit that outputs the cutoff signal to the outlet unit with the cutoff function,
The shut-off control unit of the outlet unit with a shut-off function performs the shut-off operation of the shut-off mechanism when the earthquake detecting means detects an earthquake or receives the shut-off signal output from the seismic communication unit. Seismic isolation system. A plurality of outlet units with a blocking function, and an outlet control unit for simultaneously blocking a plurality of outlet units with a blocking function in response to the blocking signal between the seismic communication unit and the outlet unit with a blocking function. Have
Each outlet unit with a shut-off function includes a shut-off signal generating unit that generates a shut-off signal when the earthquake detecting means of itself detects an occurrence of an earthquake, and a signal output terminal that outputs the generated shut-off signal to the outlet control unit. While having
The seismic isolation system according to claim 1, wherein the outlet control unit, when receiving the cutoff signal from any one of the outlet units with a cutoff function, performs a cutoff operation on the other outlet unit with the cutoff function. The outlet unit with a blocking function has a tracking detection unit for detecting a tracking phenomenon of the outlet,
The seismic isolation system according to claim 1, wherein the blocking control unit performs the blocking operation of the blocking mechanism when the tracking phenomenon is detected. A part of the branch breaker is a breaker with an external cutoff function that receives an operation signal from the outside and performs a cutoff operation.
4. The seismic communication unit, when receiving the earthquake detection signal from the seismic relay, immediately sends the operation signal to the breaker with an external shut-off function to perform a shut-off operation. The seismic isolation system described in any one.

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