JP7050656B2 - Coordination unit and circuit breaker system - Google Patents

Description

The present invention relates to a linkage unit and a circuit breaker system that link the states of two circuit breakers.

Conventionally, there are known devices that need to receive power from two power supply systems having different frequencies at the same time. Such a device receives power from each power system via a circuit breaker for each power system, but if power is supplied from only one power system, it may not operate normally or may not operate itself. May be done. In this case, it is necessary to coordinate the opening / closing operation and the disconnection operation between the circuit breakers connected to each power system. Patent Document 1 discloses a technique for mechanically linking an operation handle for opening / closing operation and a trip bar which is a starting point of a pulling operation between circuit breakers.

Japanese Unexamined Patent Publication No. 2001-143596

However, in the technique described in Patent Document 1, since the operation handle and the trip bar are mechanically linked between the circuit breakers, a highly accurate component is used to prevent unnecessary operation and non-operation of the circuit breaker. And there is a problem that a connection structure is required.

The present invention has been made in view of the above, and an object of the present invention is to obtain a cooperation unit capable of realizing cooperation between circuit breakers with a simple configuration.

In order to solve the above-mentioned problems and achieve the object, the cooperation unit of the present invention links the state of the first circuit breaker with the state of the second circuit breaker. The first circuit breaker includes a first switch that electrically outputs the open / closed state of the first circuit breaker, and a second switch that electrically outputs the trip state of the first circuit breaker. It comprises a first voltage trip device that trips the first circuit breaker by electrical input. The second circuit breaker includes a third switch that electrically outputs the open / closed state of the second circuit breaker, and a fourth switch that electrically outputs the trip state of the second circuit breaker. It includes a second voltage trip device that trips the second circuit breaker by electrical input. The linkage unit is connected to a first switch, a second switch, a third switch, a fourth switch, a first voltage trip device, and a second voltage trip device, and is connected to a first circuit breaker. And the state of the second circuit breaker are linked.

According to the present invention, there is an effect that cooperation between circuit breakers can be realized with a simple configuration.

The figure which shows the structural example of the circuit breaker system which concerns on Embodiment 1 of this invention. The figure for demonstrating the relationship between the state of the circuit breaker which concerns on Embodiment 1 and the contact state of an AX switch. The figure for demonstrating the relationship between the state of the circuit breaker which concerns on Embodiment 1 and the contact state of an AL switch. The figure which shows the electrical connection of the circuit breaker system which concerns on Embodiment 1. External view of the first circuit breaker and the second circuit breaker according to the second embodiment of the present invention. The figure which shows an example of the connection composition of the 1st circuit breaker, the 2nd circuit breaker, and the cooperation unit in the circuit breaker system which concerns on Embodiment 2.

Hereinafter, the cooperation unit and the circuit breaker system according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of a circuit breaker system according to the first embodiment of the present invention. As shown in FIG. 1, the circuit breaker system 1 according to the first embodiment is connected between the power supply systems 2 and 3 and the loads 4 and 5. The power supply system 2 and the power supply system 3 differ from each other, for example, in at least one of frequency and voltage. The load 4 and the load 5 are included in the same device, for example.

The circuit breaker system 1 is a cooperation unit that links the state of the first circuit breaker 10, the second circuit breaker 20, the state of the first circuit breaker 10 and the state of the second circuit breaker 20. 30 and. The first circuit breaker 10 is connected between the power supply system 2 and the load 4, and connects and disconnects the electric circuit between the power supply system 2 and the load 4.

For example, the first circuit breaker 10 connects or disconnects an electric circuit between the power system 2 and the load 4 when the operation handle 14 is operated. The state of the first circuit breaker 10 is on when the electric circuit between the power system 2 and the load 4 is connected by the closing operation to the operation handle 14, and the power is supplied by the opening operation to the operation handle 14. It is in the off state when the electric circuit between the system 2 and the load 4 is cut off. Further, in the first circuit breaker 10, an overcurrent or an leakage current flows in the electric circuit between the power supply system 2 and the load 4 in a state where the electric circuit between the power supply system 2 and the load 4 is connected. In this case, the electric circuit between the power supply system 2 and the load 4 is cut off to enter a trip state.

The second circuit breaker 20 is connected between the power supply system 3 and the load 5, and connects and disconnects the electric circuit between the power supply system 3 and the load 5. For example, the second circuit breaker 20 connects or disconnects the electric circuit between the power system 3 and the load 5 when the operation handle 24 is operated. The state of the second circuit breaker 20 is on when the electric circuit between the power system 3 and the load 5 is connected by the closing operation to the operation handle 24, and the power is supplied by the opening operation to the operation handle 24. It is in the off state when the electric circuit between the system 3 and the load 5 is cut off. Further, in the second circuit breaker 20, an overcurrent or an leakage current flows in the electric circuit between the power supply system 3 and the load 5 in a state where the electric circuit between the power supply system 3 and the load 5 is connected. In this case, the electric circuit between the power supply system 3 and the load 5 is cut off to enter a trip state.

The first circuit breaker 10 has a first switch 11 that electrically outputs the open / closed state of the first circuit breaker 10 and a second switch that electrically outputs the trip state of the first circuit breaker 10. The switch 12 and the first voltage trip device 13 for tripping the first circuit breaker 10 by an electric input are provided.

The second circuit breaker 20 has a third switch 21 that electrically outputs the open / closed state of the second circuit breaker 20, and a fourth switch that electrically outputs the trip state of the second circuit breaker 20. Switch 22 and a second voltage trip device 23 that trips the second circuit breaker 20 by an electrical input.

The first switch 11 and the third switch 21 are, for example, an AX (Auxiliary contact) switch, and the second switch 12 and the fourth switch 22 are, for example, an AL (Alarm contact) switch. AX and AL switches are common options for circuit breakers. In the following, the first switch 11 and the third switch 21 will be described as AX switches, and the second switch 12 and the fourth switch 22 will be described as AL switches, but the present invention is limited to such an example. Not done.

The cooperation unit 30 is connected to the first switch 11, the second switch 12, the third switch 21, the fourth switch 22, the first voltage trip device 13, and the second voltage trip device 23. , The open / closed state of the first circuit breaker 10 and the open / closed state of the second circuit breaker 20 are linked.

The cooperation unit 30 includes a drive circuit 31 and a connection unit 32. The drive circuit 31 performs an electrical input to the first voltage trip device 13 and the second voltage trip device 23 when the state of the first switch 11 and the state of the second switch 12 are different. The connection unit 32 connects the second switch 12 to the second voltage trip device 23 and the fourth switch 22 to the first voltage trip device 13.

The drive circuit 31 includes a timer relay 33, a first timer relay contact 34, and a second timer relay contact 35. When the voltage of the control power supply 6 is not applied to the timer relay 33, the first timer relay contact 34 and the second timer relay contact 35 are in the open state. When the voltage of the control power supply 6 is applied to the timer relay 33, charging of the timer relay 33 is started. When the time from the start of charging of the timer relay 33 reaches the timer set time of the timer relay 33, the timer relay 33 opens each of the first timer relay contact 34 and the second timer relay contact 35 from the open state to the closed state. To.

FIG. 2 is a diagram for explaining the relationship between the state of the circuit breaker and the contact state of the AX switch according to the first embodiment. When the state of the first circuit breaker 10 is an off state or a trip state, the b contact of the first switch 11 which is an AX switch is closed, and the terminal AXb and the terminal AXc of the first switch 11 are in a closed state. It is in a connected state. When the state of the first circuit breaker 10 is on, the a contact of the first switch 11 is closed, and the terminal AXa and the terminal AXc of the first switch 11 are connected.

Similarly, when the state of the second circuit breaker 20 is in the off state or the trip state, the b contact of the third switch 21 which is an AX switch is in the closed state, and the terminal AXb and the terminal of the third switch 21 are in the closed state. It is in a state of being connected to AXc. When the state of the second circuit breaker 20 is on, the a contact of the third switch 21 is closed, and the terminal AXa and the terminal AXc of the third switch 21 are connected. be.

FIG. 3 is a diagram for explaining the relationship between the state of the circuit breaker and the contact state of the AL switch according to the first embodiment. When the state of the first circuit breaker 10 is an off state or an on state, the b contact of the second switch 12 which is an AL switch is in the closed state, and the terminal ALb and the terminal ALc of the second switch 12 are in a closed state. It is in a connected state. When the state of the first circuit breaker 10 is the trip state, the a contact of the second switch 12 is in the closed state, and the terminal ALa and the terminal ALc of the second switch 12 are connected.

Similarly, when the state of the second circuit breaker 20 is an off state or an on state, the b contact of the fourth switch 22 which is an AL switch is in the closed state, and the terminal ALb and the terminal of the fourth switch 22 are closed. It is in a state of being connected to ALc. Further, when the state of the second circuit breaker 20 is the trip state, the a contact of the fourth switch 22 is in the closed state, and the terminal ALa and the terminal ALc of the fourth switch 22 are connected. be.

FIG. 4 is a diagram showing an electrical connection of the circuit breaker system according to the first embodiment. As shown in FIG. 4, a series circuit of the first switch 11, the third switch 21, and the timer relay 33 is connected in parallel to the control power supply 6. Specifically, in the first switch 11, the terminal AXc is connected to one end of the control power supply 6, the terminal AXa is connected to the terminal AXb of the third switch 21, and the terminal AXb is the terminal AXa of the third switch 21. Connected to. One end of the timer relay 33 is connected to the terminal AXc of the third switch 21, and the other end of the timer relay 33 is connected to the other end of the control power supply 6.

Further, as shown in FIG. 4, a series circuit of the first voltage trip device 13 and the first timer relay contact 34 is connected in parallel to the control power supply 6. Further, a series circuit of the second voltage trip device 23 and the second timer relay contact 35 is connected in parallel to the control power supply 6.

Further, the first timer relay contact 34 is connected in parallel to the fourth switch 22, and the second timer relay contact 35 is connected in parallel to the second switch 12. Specifically, the terminal ALa of the fourth switch 22 is connected to one end of the first timer relay contact 34, and the terminal ALc of the fourth switch 22 is connected to the other end of the first timer relay contact 34. Will be done. The terminal ALa of the second switch 12 is connected to one end of the second timer relay contact 35, and the terminal ALc of the second switch 12 is connected to the other end of the second timer relay contact 35.

The operation in the circuit breaker system 1 configured as described above will be described. First, the operation of the circuit breaker system 1 when the two power supply systems 2 and 3 are normally input to the device having the loads 4 and 5 will be described.

When the first circuit breaker 10 and the second circuit breaker 20 are each in the off state, the first switch 11, the third switch 21, the second switch 12, the fourth switch 22, and the first timer The states of the relay contact 34 and the second timer relay contact 35 are the states shown in FIG. When only the first circuit breaker 10 is turned on by the closing operation of the first circuit breaker 10 to the operation handle 14 from the state shown in FIG. 4, the a contact of the first switch 11 is opened. It becomes a closed state. Therefore, the terminal AXc of the first switch 11 and the terminal AXc of the third switch 21 are connected via the terminal AXa of the first switch 11 and the terminal AXb of the third switch 21. Therefore, the voltage of the control power supply 6 is applied to the timer relay 33 via the first switch 11 and the third switch 21, and the charging of the timer relay 33 is started.

Then, by the time from the start of charging of the timer relay 33 reaches the timer set time of the timer relay 33, the second circuit breaker 20 is closed by closing the operation handle 24 of the second circuit breaker 20. Is turned on, the connection between the terminal AXc of the first switch 11 and the terminal AXc of the third switch 21 is released. Therefore, the voltage of the control power supply 6 is not applied to the timer relay 33, and the timer relay 33 is reset. As a result, the on state of the first circuit breaker 10 and the on state of the second circuit breaker 20 are maintained, and the power supply from the two power supply systems 2 and 3 to the device having the loads 4 and 5 continues. It is done.

Similarly, when only the second circuit breaker 20 is turned on by closing the operation handle 24 from the state shown in FIG. 4 to the second circuit breaker 20, the a contact of the third switch 21 is changed. It changes from the open state to the closed state. Therefore, the terminal AXc of the first switch 11 and the terminal AXc of the third switch 21 are connected via the terminal AXb of the first switch 11 and the terminal AXa of the third switch 21. As a result, charging of the timer relay 33 is started, but if the operation handle 14 of the first circuit breaker 10 is closed by the time the timer setting time of the timer relay 33 is reached, the timer relay 33 will start charging. Since it is reset, the on state of the first circuit breaker 10 and the on state of the second circuit breaker 20 are maintained. As a result, power is continuously supplied from the two power supply systems 2 and 3 to the device having the loads 4 and 5.

Next, the operation of the circuit breaker system 1 when only one of the power supply systems 2 and 3 is input to the device having the loads 4 and 5 will be described. When only the first circuit breaker 10 is turned on by the closing operation of the first circuit breaker 10 to the operation handle 14 from the state shown in FIG. 4, charging of the timer relay 33 starts as described above. Will be done.

If the second circuit breaker 20 is not turned on by the time the timer relay 33 starts charging until the timer set time of the timer relay 33 is reached, the first timer relay contact 34 is in the open state. The voltage of the control power supply 6 is applied to the first voltage trip device 13. Therefore, the first circuit breaker 10 is in a trip state.

Similarly, when only the second circuit breaker 20 is turned on by the closing operation to the operation handle 24 from the state shown in FIG. 4, charging of the timer relay 33 is started. If the first circuit breaker 10 is not turned on by the time the timer relay 33 starts charging before the timer set time of the timer relay 33 is reached, the second timer relay contact 35 is closed from the open state. The state is set, and the voltage of the control power supply 6 is applied to the second voltage trip device 23. As a result, the second circuit breaker 20 is in a trip state.

As described above, in the cooperation unit 30, after only one circuit breaker of the first circuit breaker 10 and the second circuit breaker 20 is turned from the off state to the on state, only one circuit breaker is turned on. When the period in which is reaches the timer setting period, the other circuit breaker is put into the trip state. As a result, the cooperation unit 30 prevents the period in which only one of the first circuit breaker 10 and the second circuit breaker 20 is in the ON state is maintained beyond the timer setting period. can do. That is, it is possible to prevent the state in which power is supplied from only one system from being maintained beyond the timer setting period.

Next, from the state where the first circuit breaker 10 and the second circuit breaker 20 are both on and the power supply systems 2 and 3 are turned on to the device having the loads 4 and 5, the first circuit breaker 10 The operation of the circuit breaker system 1 when only one of the second circuit breaker 20 is turned off will be described.

The first circuit breaker 10 is turned off by opening the operation handle 14 of the first circuit breaker 10 from the state where both the first circuit breaker 10 and the second circuit breaker 20 are on. In that case, the b contact of the first switch 11 changes from the open state to the closed state. Therefore, the terminal AXc of the first switch 11 and the terminal AXc of the third switch 21 are connected via the terminal AXb of the first switch 11 and the terminal AXa of the third switch 21. As a result, the voltage of the control power supply 6 is applied to the timer relay 33 via the first switch 11 and the third switch 21, and the charging of the timer relay 33 is started.

Then, by the time the time from the start of charging of the timer relay 33 reaches the timer set time of the timer relay 33, the operation handle 24 of the second circuit breaker 20 is not opened and the second circuit breaker is not opened. When 20 is not turned off, the second timer relay contact 35 goes from the open state to the closed state, and the voltage of the control power supply 6 is applied to the second voltage trip device 23. Therefore, the second circuit breaker 20 is in a trip state.

Similarly, the operation handle 24 of the second circuit breaker 20 is opened from the state where both the first circuit breaker 10 and the second circuit breaker 20 are in the ON state, and the second circuit breaker 20 is opened. When it is turned off, charging of the timer relay 33 is started. Then, by the time the time from the start of charging of the timer relay 33 reaches the timer set time of the timer relay 33, the operation handle 14 of the first circuit breaker 10 is not opened and the first circuit breaker is not opened. When 10 is not turned off, the first timer relay contact 34 goes from the open state to the closed state, and the voltage of the control power supply 6 is applied to the first voltage trip device 13. Therefore, the first circuit breaker 10 is in a trip state.

As described above, in the cooperation unit 30, after only one circuit breaker of the first circuit breaker 10 and the second circuit breaker 20 is turned from the on state to the off state, only one circuit breaker is turned off. When the period in which is reaches the timer setting period, the other circuit breaker is put into the trip state. As a result, in the cooperation unit 30, the period after only one circuit breaker of the first circuit breaker 10 and the second circuit breaker 20 is turned off is maintained beyond the timer setting period. It can be prevented. That is, it is possible to prevent the state in which power is supplied from only one system from being maintained beyond the timer setting period.

Next, from the state where both the first circuit breaker 10 and the second circuit breaker 20 are in the ON state, one of the first circuit breaker 10 and the second circuit breaker 20 is caused by the generation of overcurrent. The operation of the circuit breaker system 1 in the trip state will be described.

When the first circuit breaker 10 goes into a trip state due to the generation of an overcurrent from the state where both the first circuit breaker 10 and the second circuit breaker 20 are in the ON state, the a of the second switch 12 The contacts go from open to closed. That is, the terminal ALa and the terminal ALc of the second switch 12 are connected. Therefore, the voltage of the control power supply 6 is applied to the second voltage tripping device 23, and the second circuit breaker 20 is in a trip state.

Similarly, when the first circuit breaker 10 and the second circuit breaker 20 are both in the ON state and the second circuit breaker 20 is in the trip state due to the generation of overcurrent, the fourth switch. The a contact of 22 changes from the open state to the closed state. That is, the terminal ALa and the terminal ALc of the fourth switch 22 are connected. Therefore, the voltage of the control power supply 6 is applied to the first voltage tripping device 13, and the first circuit breaker 10 is in a trip state.

As described above, when only one circuit breaker of the first circuit breaker 10 and the second circuit breaker 20 goes from the on state to the trip state, the cooperation unit 30 puts the other circuit breaker into the trip state. .. As a result, the cooperation unit 30 can prevent the state in which power is supplied from only one system from being maintained beyond the timer setting period.

The cooperation unit 30 is not limited to the above-mentioned configuration. That is, the cooperation unit 30 is, for example, from the state of the first switch 11, the second switch 12, the third switch 21, and the fourth switch 22, the first circuit breaker 10 and the second circuit breaker. When only one circuit breaker of the device 20 is in the off state or the trip state, the other circuit breaker may be in the trip state.

As described above, the circuit breaker system 1 according to the first embodiment is the state of the first circuit breaker 10, the second circuit breaker 20, the state of the first circuit breaker 10, and the second circuit. It is provided with a cooperation unit 30 that cooperates with the state of the circuit breaker 20. The first circuit breaker 10 has a first switch 11 that electrically outputs the open / closed state of the first circuit breaker 10 and a second switch that electrically outputs the trip state of the first circuit breaker 10. The switch 12 and the first voltage trip device 13 for tripping the first circuit breaker 10 by an electric input are provided. The second circuit breaker 20 has a third switch 21 that electrically outputs the open / closed state of the second circuit breaker 20, and a fourth switch that electrically outputs the trip state of the second circuit breaker 20. Switch 22 and a second voltage trip device 23 that trips the second circuit breaker 20 by an electrical input. The cooperation unit 30 is connected to a first switch 11, a third switch 21, a second switch 12, a fourth switch 22, a first voltage trip device 13, and a second voltage trip device 23. , The open / closed state of the first circuit breaker 10 and the open / closed state of the second circuit breaker 20 are linked. Thereby, the cooperation between the first circuit breaker 10 and the second circuit breaker 20 can be realized with a simple configuration. Further, by using the AX switch as the first switch 11 and the third switch 21 and the AL switch as the second switch 12 and the fourth switch 22, the first circuit breaker 10 and the second circuit are used. The circuit breaker 20 can be easily linked.

Further, the cooperation unit 30 includes a drive circuit 31 and a connection unit 32. The drive circuit 31 performs an electrical input to the first voltage trip device 13 and the second voltage trip device 23 when the state of the first switch 11 and the state of the third switch 21 are different. The connection unit 32 connects the second switch 12 to the second voltage trip device 23 and the fourth switch 22 to the first voltage trip device 13.

Further, the drive circuit 31 has a first voltage trip device 13 and a second voltage trip device 23 when the state of the first switch 11 and the state of the third switch 21 are different from each other for the timer set time. Make an electrical input to. The timer setting time is an example of a preset time. As a result, the cooperation unit 30 prevents the period in which only one of the first circuit breaker 10 and the second circuit breaker 20 is in the off state is maintained beyond the timer setting period. can do.

Embodiment 2.
In the circuit breaker system according to the second embodiment, the first circuit breaker and the second circuit breaker are provided with connectors, respectively, and the connector of the connecting unit is connected to the connectors to connect the first circuit breaker. And the state of the second circuit breaker can be linked. In the following, the same components as those of the circuit breaker system 1 according to the first embodiment are designated by the same reference numerals and the description thereof will be omitted, and the configurations different from the circuit breaker system 1 according to the first embodiment will be mainly described. It shall be.

FIG. 5 is an external view of the first circuit breaker and the second circuit breaker according to the second embodiment of the present invention. FIG. 6 is a diagram showing an example of a connection configuration of a first circuit breaker, a second circuit breaker, and a cooperation unit in the circuit breaker system according to the second embodiment.

As shown in FIG. 5, the first circuit breaker 10A according to the second embodiment includes connectors 15 and 16 on the cover portion on the operation handle 14 side. The connector 15 is connected to, for example, the terminals AXa, AXb, AXc of the first switch 11, and the connector 16 is connected to, for example, ALa, ALc of the second switch 12 and the first voltage trip device 13. ..

Further, as shown in FIG. 5, the second circuit breaker 20A also includes connectors 25 and 26 on the cover portion on the operation handle 24 side, similarly to the first circuit breaker 10A. The connector 25 is connected to, for example, the terminals AXa, AXb, AXc of the third switch 21, and the connector 26 is connected to, for example, the ALa, ALc of the fourth switch 22 and the second voltage trip device 23. ..

As shown in FIG. 6, the cooperation unit 30A according to the second embodiment has four connectors connected to the connectors 15 and 16 of the first circuit breaker 10A and the connectors 25 and 26 of the second circuit breaker 20A. 36, 37, 38, 39 are provided. By connecting the connectors 36, 37, 38, 39 to the connectors 15, 16, 25, 26, the first circuit breaker 10A and the second circuit breaker 20A are connected to the cooperation unit 30A, and FIGS. 1 and 1 and FIG. The connection state shown in 4 is established.

As shown in FIG. 6, the cooperation unit 30A has the connectors 15 and 16 of the first circuit breaker 10A and the second circuit in a state where the first circuit breaker 10A and the second circuit breaker 20A are arranged side by side. The connectors 25 and 26 of the circuit breaker 20A can be connected. Therefore, the cooperation unit 30A can be easily attached to the first circuit breaker 10A and the second circuit breaker 20A.

The number and arrangement of connectors for connecting the cooperation unit 30A and the first circuit breaker 10A are not limited to the above examples, and can be appropriately changed. Similarly, the number and arrangement of connectors for connecting the cooperation unit 30A and the second circuit breaker 20A are not limited to the above-mentioned example, and can be appropriately changed.

The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations as long as it does not deviate from the gist of the present invention. It is also possible to omit or change the part.

1 circuit breaker system, 2,3 power supply system, 4,5 load, 6 control power supply, 10,10A 1st circuit breaker, 11 1st switch, 12 2nd switch, 13 1st voltage trip Equipment, 14, 24 operation handles, 15, 16, 25, 26, 36, 37, 38, 39 connectors, 20, 20A second circuit breaker, 21 third switch, 22 fourth switch, 23 second Voltage trip device, 30, 30A linkage unit, 31 drive circuit, 32 connection part, 33 timer relay, 34 1st timer relay contact, 35 2nd timer relay contact, ALa, ALb, ALc, AXa, AXb, AXc terminal ..

Claims (5)

It is a cooperation unit that links the state of the first circuit breaker and the state of the second circuit breaker.
The first circuit breaker is
A first switch that electrically outputs the open / closed state of the first circuit breaker,
A second switch that electrically outputs the trip state of the first circuit breaker, and
A first voltage trip device that trips the first circuit breaker by electrical input is provided.
The second circuit breaker is
A third switch that electrically outputs the open / closed state of the second circuit breaker,
A fourth switch that electrically outputs the trip state of the second circuit breaker, and
A second voltage trip device that trips the second circuit breaker by electrical input is provided.
The cooperation unit is
The first switch, the second switch, the third switch, the fourth switch, the first voltage trip device, and the second voltage trip device are connected to the first switch. A linkage unit characterized in that the state of the circuit breaker and the state of the second circuit breaker are linked. The cooperation unit is
A drive circuit that performs electrical input to the first voltage trip device and the second voltage trip device when the state of the first switch and the state of the third switch are different.
1. The first aspect of the present invention comprises a connection portion for connecting the second switch to the second voltage trip device and connecting the fourth switch to the first voltage trip device. The described cooperation unit. The drive circuit
When the state of the first switch and the state of the third switch are different for a preset period of time, an electric input is input to the first voltage trip device and the second voltage trip device. The cooperation unit according to claim 2, wherein the operation is performed. The cooperation unit according to any one of claims 1 to 3 and the cooperation unit.
The first circuit breaker and
A circuit breaker system comprising the second circuit breaker. The first circuit breaker is
It comprises a connector connected to the first switch, the second switch, and the first voltage trip device.
The second circuit breaker is
It comprises a connector connected to the third switch, the fourth switch, and the second voltage trip device.
The cooperation unit is
Having the connector for connecting the connector of the first circuit breaker and the connector of the second circuit breaker in a state where the first circuit breaker and the second circuit breaker are arranged side by side. 4. The circuit breaker system according to claim 4.

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