JP7365638B2 - Switchgear system and distribution board - Google Patents

Description

The present disclosure generally relates to a switch system and a power distribution board, and more particularly, a switch system including a processing unit operated by operating power generated in a power supply unit, and a power distribution board including the switch system. Regarding.

Patent Document 1 discloses an earth leakage breaker. This earth leakage breaker includes a switching contact, a zero-phase current transformer, an earth leakage detection section, a tripping device, a rectifier circuit, and a constant voltage circuit.

The switching contacts open and close the AC circuit. An AC line passes through the zero-phase current transformer. The earth leakage detection section detects earth leakage based on the detection signal of the zero-phase current transformer. The tripping device includes a tripping coil that is energized via a switching element by an output signal from the earth leakage detection section, and a tripping mechanism that drives open/close contacts to open and close when the tripping coil is energized. The rectifier circuit is connected to the AC circuit on the load side of the switching contacts. The rectifier circuit converts an alternating current voltage input from an alternating current line into a direct current voltage. The constant voltage circuit converts the output of the rectifier circuit into a predetermined DC voltage, and supplies power to the earth leakage detection section and the tripping device.

JP2015-032420A

In a switch system such as the earth leakage circuit breaker described in Patent Document 1, when an AC circuit is cut off by opening a contact portion such as a switching contact portion, power supply to a processing unit such as an earth leakage detection portion is stopped. be done. Therefore, when the contact portion is in an open state, the operation of the processing portion is stopped.

The present disclosure has been made in view of the above reasons, and aims to provide a switch system in which a processing section can continue to operate even when the contact section is in an open state, and a distribution board equipped with this switch system. do.

A switch system according to one aspect of the present disclosure includes a contact section, a power supply section, a processing section, a tripping section, and a voltage detection section. The contact portion is provided in an electric path connecting an external power source and a load. The power supply section is connected to a power supply side electrical circuit between the external power supply and the contact section among the electrical circuits. The processing section operates using operating power generated by the power supply section. The tripping section has a trip coil that is excited by energization. The tripping section opens the contact section when the trip coil is excited in response to a control signal from the processing section. The voltage detection section detects a voltage for determining whether the contact section is in a closed state. The power source section is connected to the external power source regardless of whether the contact section is open or closed. The trip coil is provided in an electric path that is connected to the external power source only when the contact portion is in a closed state. The voltage detection unit detects a voltage of an electric line connected to the external power source and provided with the trip coil only when the contact portion is in a closed state.
A switch system according to one aspect of the present disclosure includes a contact section, a power supply section, a processing section, a trip section, and a presentation section. The contact portion is provided in an electric path connecting an external power source and a load. The power supply section is connected to a power supply side electrical circuit between the external power supply and the contact section among the electrical circuits. The processing section operates using operating power generated by the power supply section. The tripping section has a trip coil that is excited by energization. The tripping section opens the contact section when the trip coil is excited in response to a control signal from the processing section. The presenting unit presents operational information regarding the operation of the switch system. The power source section is connected to the external power source regardless of whether the contact section is open or closed. The trip coil is provided in an electric path that is connected to the external power source only when the contact portion is in a closed state. The presentation unit operates with power supplied from the power supply unit. The operation information presented by the presentation section includes information regarding the operation of the processing section.
A switch system according to one aspect of the present disclosure includes a contact section, a power supply section, a processing section, a first tripping section, a second tripping section, and a presentation section. The contact portion is provided in an electric path connecting an external power source and a load. The power supply section is connected to a power supply side electrical circuit between the external power supply and the contact section among the electrical circuits. The processing section operates using operating power generated by the power supply section. The first tripping section has a trip coil that is excited by energization. The first tripping section opens the contact section when the trip coil is excited in response to a control signal from the processing section. The second tripping section interrupts the electric path connecting the external power source and the load without depending on the control signal when an abnormal current flows through the contact section. The presenting unit presents operational information regarding the operation of the switch system. The power source section is connected to the external power source regardless of whether the contact section is open or closed. The trip coil is provided in an electric path that is connected to the external power source only when the contact portion is in a closed state. The presentation unit operates with power supplied from the power supply unit. The operation information presented by the presentation section includes information regarding the operation of the second tripping section .

A distribution board according to one aspect of the present disclosure includes the switch system and a distribution board cabinet that accommodates the switch system.

According to the present disclosure, there is an advantage that it is possible to provide a switch system and a distribution board in which the processing section can continue to operate even when the contact section is in an open state.

FIG. 1 is an explanatory diagram showing a schematic configuration of a switch system according to an embodiment of the present disclosure. FIG. 2 is an explanatory diagram showing a schematic configuration of a distribution board including the switch system described above. FIG. 3 is an explanatory diagram of the distribution board same as above, viewed from the front with the lid removed. FIG. 4 is a flowchart illustrating the operation of the switch system as described above. FIG. 5 is an explanatory diagram showing a schematic configuration of a switch system according to a first modification. FIG. 6 is an explanatory diagram showing a schematic configuration of a switch system according to a second modification.

(1) Overview Each figure described in the following embodiments is a schematic diagram, and the ratio of the size and thickness of each component in each figure does not necessarily reflect the actual size ratio. Not necessarily.

A switch system (circuit breaker) 100 according to this embodiment is realized as a branch breaker 3 provided in a distribution board 9.

As shown in FIG. 1, the switch system 100 includes a primary terminal 101, a secondary terminal 102, a contact section C1, a power supply section 16, a processing section 12, and a tripping section 14. There is.

The primary terminal 101 is connected to an external power source 200 . Secondary side terminal 102 is connected to load B1. The contact portion C1 is provided in the electric path L1 connecting the primary side terminal 101 and the secondary side terminal 102. In other words, the contact portion C1 is provided in the electric path L1 that connects the external power source 200 and the load B1. The power supply section 16 is connected to the power supply side circuit L11 between the primary terminal 101 (external power supply 200) and the contact section C1 in the circuit L1. The processing unit 12 operates using operating power generated by the power supply unit 16. The tripping section 14 has a trip coil A1 that is excited by energization. The tripping section 14 opens the contact section C1 when the trip coil A1 is excited in response to the control signal S0 from the processing section 12.

The power supply part 16 is connected to the power supply side electric circuit L11, and is connected to the primary side terminal 101 (external power supply 200) regardless of whether the contact part C1 is opened or closed. The trip coil A1 is provided in an electric line (sub-electric line L2 to be described later) that is connected to the primary terminal 101 (external power supply 200) only when the contact portion C1 is in the closed state.

In the switch system 100 of this embodiment, the power supply section 16 is connected to the external power supply 200 regardless of whether the contact section C1 is opened or closed, and can be supplied with power from the external power supply 200. Therefore, the processing section 12 can be supplied with operating power from the power supply section 16 regardless of whether the contact section C1 is opened or closed. Therefore, the processing section 12 can operate even if the contact section C1 is in an open state.

Further, in the switch system 100, the trip coil A1 is provided in an electric line (auxiliary electric line L2) that is connected to the external power supply 200 only when the contact portion C1 is in the closed state. Therefore, when the contact portion C1 is in the open state, the trip coil A1 is not energized. Therefore, a situation where the trip coil A1 is inadvertently energized can be prevented, and deterioration of the trip coil A1 can be suppressed.

(2) Details Hereinafter, the switch system 100 of this embodiment and the distribution board 9 including the switch system 100 will be described in more detail with reference to FIGS. 1 to 4. In the following description, unless otherwise specified, the top, bottom, left and right of FIG. 3 are defined as the top, bottom, left and right of the distribution board 9.

(2.1) Distribution board First, the distribution board 9 will be explained using FIGS. 2 and 3. As shown in FIGS. 2 and 3, the distribution board 9 includes a main breaker 2, a plurality of branch breakers 3 (switch system 100), a measurement adapter 4, a detection section 5, and a distribution section that accommodates these. A panel cabinet (hereinafter abbreviated as "cabinet") 90 is provided. In this embodiment, the distribution board 9 is installed in a detached house as an example, but the present invention is not limited to this example. In other words, the distribution board 9 may be installed in any facility where it can be installed, such as each residential unit of an apartment complex, an office, a store, a factory, a hospital, or the like.

As shown in FIG. 3, the cabinet 90 includes a box-shaped body 91 with an open front and a cover 92 that closes the opening of the body 91. The cabinet 90 is attached to construction material (eg, a wall of a building). Note that the cabinet 90 may be attached in a state where it is partially or entirely embedded in an attachment hole provided in a wall. The cabinet 90 is provided, for example, at a height that is out of reach for a child of average height, but at a height that can be operated by an adult of average height.

The cabinet 90 further includes a lid 93 that covers the front surface 921 of the cover 92 when the cabinet 90 is attached to a wall. The lid body 93 is attached to the cover 92 so as to be movable between a closed position and an open position. The closed position is a position where the front surface 921 of the cover 92 is covered. The open position is a position in which at least a portion of the front surface 921 of the cover 92 is not covered (a position indicated by a chain double-dashed line in FIG. 3). Note that the lid 93 only needs to cover a part of the front surface 921 of the cover 92 when the cover 92 is viewed from a certain direction, and in this embodiment, the lid 93 in the closed position When viewed from above, almost the entire front surface 921 of the cover 92 is covered.

Inside the cabinet 90, a main breaker 2, a plurality of branch breakers 3, a measurement adapter 4, and a detection unit 5 are housed. The main breaker 2, the plurality of branch breakers 3, the measurement adapter 4, and the detection unit 5 are attached to the body 91 directly or via attachment parts or the like. Note that the cover 92 is provided with exposure holes that expose parts of the main breaker 2, the plurality of branch breakers 3, and the measurement adapter 4. Further, the distribution board 9 may further include a backup power source, a seismic breaker, a grid breaker, etc. housed in the cabinet 90.

The main breaker 2 is arranged inside the cabinet 90. The main breaker 2 includes a primary terminal 201 and a secondary terminal 202. Since the distribution board 9 of this embodiment assumes a single-phase three-wire system as the power distribution system, the primary side terminal 201 of the main breaker 2 is connected to the single-phase three-wire system of the system power supply (commercial power supply) as the external power supply 200. The drop-in wire is electrically connected. In addition, the secondary terminal 202 of the main breaker 2 includes a first voltage pole (L1 phase) conductive bar, a second voltage pole (L2 phase) conductive bar, and a neutral pole (N phase) conductive bar. It is connected.

A plurality of branch breakers 3 (switch system 100) are divided into upper and lower sides of the neutral conductive bar, and a plurality of branch breakers 3 (switch system 100) are arranged in parallel in the left-right direction. Each branch breaker 3 includes a pair of primary side terminals 301 and a pair of secondary side terminals 302. There are two types of branch breaker 3: one for 100V and one for 200V. A pair of primary side terminals 301 included in the 100V branch breaker 3 are electrically connected to one of the first voltage pole conductive bar and the second voltage pole conductive bar, and to the neutral pole conductive bar, respectively. be done. A pair of primary side terminals 301 included in the 200V branch breaker 3 are electrically connected to the conductive bar of the first voltage pole and the conductive bar of the second voltage pole, respectively. Further, a corresponding wiring is electrically connected to the secondary side terminal 302 of the branch breaker 3. To the wiring connected to the secondary side terminal 302 of each branch breaker 3, one or more devices such as lighting equipment, air conditioning equipment, television receiver, hot water supply equipment, or wiring devices such as wall switches are connected as load B1. be done.

The detection unit 5 is configured to detect the current flowing through the load B1 connected to each of the plurality of branch breakers 3. The detection unit 5 includes, for example, a substrate and a plurality of coils 51. The substrate has a plate shape that is long in the left and right direction. A plurality of holes are formed in the substrate. Terminals extending from the conductive bar and connected to the primary terminal of the branch breaker 3 are inserted into the plurality of holes, respectively. The coil 51 is, for example, a Rogowski coil, and is formed around the hole in the substrate. In this embodiment, the detection unit 5 detects the current flowing through the load B1 connected to each of the plurality of branch breakers 3 by measuring the current induced in each of the plurality of coils 51.

The measurement adapter 4 is arranged inside the cabinet 90. The measurement adapter 4 has a measurement function that measures the electric power passing through at least one of the main breaker 2 and the branch breaker 3 in the distribution panel 9, and a communication function that communicates with equipment arranged outside the cabinet 90. There is.

More specifically, the measurement adapter 4 of this embodiment is electrically connected to the main detection section and the detection section 5. Here, the main detection section includes a current sensor made of, for example, a current transformer (CT), and measures the current flowing through the main breaker 2. The measurement adapter 4 has a function (measurement function) of converting each of the current values measured by the detection unit 5 and the master detection unit into electric power values.

Furthermore, the measurement adapter 4 has a function (communication function) of communicating with an information terminal 61 such as a smartphone, for example. In addition to a smartphone, the information terminal 61 may include, for example, a desktop or laptop personal computer, a tablet terminal, a smart speaker, or the like.

Furthermore, the measurement adapter 4 has a function of communicating with the controller 62 (communication function). The controller 62 is configured to control devices compatible with HEMS (Home Energy Management System) (hereinafter referred to as HEMS compatible devices). Here, HEMS-compatible devices include, for example, smart meters, solar power generation devices, power storage devices, fuel cells, electric vehicles, air conditioners, lighting equipment, water heaters, refrigerators, television receivers, and the like. Note that HEMS compatible devices are not limited to these devices.

The communication method between the measurement adapter 4 and the controller 62 (or the information terminal 61) is, for example, a 920 MHz band specified low power wireless station (wireless station that does not require a license), Wi-Fi (registered trademark), Bluetooth (registered trademark). ), etc., and may be wireless communication using radio waves as a medium. Further, the communication method between the measurement adapter 4 and the controller 62 (or the information terminal 61) may be wired communication based on a communication standard such as a wired LAN (Local Area Network). Furthermore, the communication protocol for communication between the measurement adapter 4 and the controller 62 (or the information terminal 61) may be, for example, Ethernet (registered trademark), ECHONET Lite (registered trademark), or the like. In this embodiment, the communication method between the measurement adapter 4 and the information terminal 61 is wireless communication via a network N1 such as the Internet, for example.

In the distribution board 9 of this embodiment, the measurement adapter 4 receives the current value of each of the plurality of loads B1 measured by the detection unit 5 from the detection unit 5. Furthermore, the measurement adapter 4 receives the current value measured by the main detection section from the main detection section. The measurement adapter 4 converts each of the current values measured by the detection unit 5 and the master detection unit into power values (instantaneous power values). The measurement adapter 4 has a function of calculating power amount data obtained by integrating the collected instantaneous power data over a predetermined period of time. Therefore, the controller 62 that communicates with the measurement adapter 4 can control the HEMS compatible equipment based on the instantaneous power and power amount of each of the plurality of loads B1.

The measurement adapter 4 also has a function (communication function) of communicating with at least one of a solar power generation device, a power storage device, and a power conversion device (power conditioner) electrically connected to an electric vehicle. have. The power conversion device can be used for both charging and discharging the storage battery of an electric vehicle by converting power in both directions, in addition to converting power for unidirectional charging from the distribution board 9 to an electric vehicle. The configuration may be such that the The communication method between the measurement adapter 4 and the solar power generation device, the power storage device, and the power conversion device is wired communication based on a communication standard such as RS-485, for example.

(2.2) Switch System Next, the configuration of the switch system 100 (branch breaker 3) will be described using FIG. 1.

As shown in FIG. 1, the switch system 100 includes a pair of primary side terminals 101, 101, a pair of secondary side terminals 102, 102, and a pair of contact portions (hereinafter also referred to as “first contact portions”). C1, C1, a second contact portion C2, an opening/closing mechanism 11, and an operation handle 111. The switch system 100 also includes a power supply section 16, a processing section 12, a voltage detection section 13, a current detection section 15, a tripping section (hereinafter also referred to as "first tripping section") 14, and a first tripping section 14. The device includes a two-tripping section 17, a presentation section 18, and a communication section 19. The first tripping section 14 includes a switch SW0 and a trip coil A1. Each component of the switch system 100 is provided inside the case of the branch breaker 3 here.

The switch system 100 also includes a pair of electrical circuits (hereinafter also referred to as "main electrical circuits") L1, L1 that connect a pair of primary terminals 101, 101 and a pair of secondary terminals 102, 102, respectively (hereinafter also referred to as "main electrical circuit"). A sub-electrical circuit L2 is provided spanning between the main electric circuits L1 and L1. Note that in the present disclosure, a "terminal" such as a "primary side terminal" does not have to be a component (terminal) for connecting an electric wire, and may be, for example, a lead of an electronic component or a part of a conductor included in a circuit board. , or a part of an electric wire.

In this embodiment, the switch system 100 (branch breaker 3) is for 100V, and one of the pair of primary side terminals 101, 101 (left side in FIG. 1) is a voltage pole (first voltage pole or second voltage pole). Assume that one side (on the right side of FIG. 1) is connected to a conductive bar of the neutral pole (voltage pole) and the other (right side in FIG. 1) to the conductive bar of the neutral pole. Hereinafter, when distinguishing between a pair of main electrical circuits L1 and L1, the main electrical circuit L1 connected to the primary terminal 101 connected to the conductive bar of the voltage pole is referred to as "main electrical circuit L101", and is connected to the conductive bar of the neutral pole. The main electrical circuit L1 connected to the primary terminal 101 is also referred to as a "main electrical circuit L102." Note that the switch system 100 (branch breaker 3) may be for 200V.

The pair of main electrical circuits L1, L1 are provided with a pair of first contact portions C1, C1, respectively. Each of the pair of main electrical circuits L1, L1 includes a power supply electrical circuit L11 that connects the primary terminal 101 and the first contact C1, a load electrical circuit L12 that connects the first contact C1 and the secondary terminal 102, including. That is, the power supply side electric circuit L11 connects the external power supply 200 and the first contact portion C1. Moreover, the load-side electric circuit L12 connects the first contact portion C1 and the load B1.

Each first contact portion C1 has a fixed contact and a movable contact that comes into contact with or separates from the fixed contact. Each first contact part C1 has a closed state (on) state in which the movable contact contacts the fixed contact and a state in which the movable contact is separated from the fixed contact by physically moving the movable contact fixed to the movable contact. It can be switched between the open (off) state. The movable contacts of the pair of first contact portions C1, C1 may be common or may be separate. In addition, in the following, the change of at least one of the pair of first contact portions C1, C1 from a closed state to an open state will be referred to as "the switch system 100 is cut off" or "the main electric circuit L1 is cut off". ” is also called.

The sub-electrical circuit L2 is connected between the power-supply side electric circuit L11 of one main electric circuit L1 (L101) and the power-supply-side electric circuit L11 of the other main electric circuit L1 (L102). That is, the auxiliary electric circuit L2 is provided straddling between the connection point P1 of one main electric circuit L101 with the power supply side electric circuit L11 and the connection point P2 of the other main electric circuit L102 with the power supply side electric circuit L11. It is being The auxiliary circuit L2 is provided with a switch SW0, a trip coil A1, and a second contact portion C2. In other words, the series circuit of the switch SW0, the trip coil A1, and the second contact portion C2 is connected between the power supply side circuits L11 and L11 of the pair of main circuits L1 and L1. Here, the switch SW0 of the series circuit is connected to the power supply side circuit L11 of the main circuit L101. Further, the second contact portion C2 of the series circuit is connected to the power supply side electrical circuit L11 of the main electrical circuit L102.

The switch SW0 is an a contact (normally open contact) here, and is, for example, a semiconductor element such as a thyristor. The on/off state of the switch SW0 is controlled by the processing unit 12. Here, the switch SW0 is turned on when the control signal S0 is transmitted from the processing unit 12 to the control terminal of the switch SW0.

The second contact portion C2 includes a fixed contact and a movable contact that comes into contact with or separates from the fixed contact. The second contact portion C2 has a closed state (on) state in which the movable contact is in contact with the fixed contact and an open state in which the movable contact is separated from the fixed contact by physically moving the movable contact fixed to the movable contact. can be switched between the polar (off) state.

Here, trip coil A1 is connected between switch SW0 and second contact portion C2 in sub-current line L2. Trip coil A1 is connected to power supply side electrical circuit L11 in main electrical circuit L1 (L102) via second contact portion C2.

Trip coil A1 is connected to the pair of primary side terminals 101, 101 and can be energized by power from external power supply 200 only when switch SW0 is turned on and second contact portion C2 is in a closed state. That is, unless the second contact portion C2 is in the closed state, the trip coil A1 is not energized even if the processing section 12 transmits the control signal S0 to the switch SW0 and turns on the switch SW0. As will be described later, the second contact portion C2 is configured to open when the first contact portion C1 is in an open state, and to close when the first contact portion C1 is in a closed state. Therefore, the trip coil A1 can be energized only when the first contact portion C1 is in the closed state. In other words, the trip coil A1 is provided in an electric line (auxiliary electric line L2) that can be connected to the external power supply 200 only when the first contact portion C1 is in the closed state.

The operation handle 111 is an operation section for a user to open or close the pair of first contact sections C1, C1. The operation handle 111 accepts operations by the user. The operating handle 111 is rotatably supported by the housing with a lever (operating knob) that can be operated by the user protruding outside the housing. The operating handle 111 is rotatable between an on position where the pair of first contact portions C1, C1 are closed, and an off position where the pair of first contact portions C1, C1 are opened.

The opening/closing mechanism 11 opens or closes both of the pair of first contact portions C1, C1 together in response to an opening operation (off operation) or a closing operation (on operation) on the operation handle 111. The opening/closing mechanism 11 includes a plurality of link members. The plurality of link members connect the operating handle 111 and the movable contacts of the pair of first contact portions C1, C1, and move the movable contacts as the operating handle 111 rotates.

Further, in response to an opening operation (off operation) or a closing operation (on operation) on the operating handle 111, the opening/closing mechanism 11 also opens the second contact portion C2 together with the pair of first contact portions C1, C1. Or close the pole. That is, the plurality of link members of the opening/closing mechanism 11 connect the operating handle 111 and the movable contact of the second contact portion C2, and move the movable contact as the operating handle 111 rotates. That is, the second contact portion C2 is configured to open when the first contact portion C1 is in an open state, and to close when the first contact portion C1 is in a closed state.

Further, the opening/closing mechanism 11 is configured to open the pair of first contact portions C1, C1 and the second contact portion C2 when the trip coil A1 is excited by energization. The opening/closing mechanism 11 includes, for example, a movable iron core that is moved by magnetic flux generated by excitation of the trip coil A1. The opening/closing mechanism 11 moves the movable contacts of the pair of first contact parts C1, C1 and the second contact part C2 in accordance with the movement of the movable iron core, and moves the movable contacts of the pair of first contact parts C1, C1 and the second contact part C2. Portion C2 is opened.

In this way, in the switch system 100 of the present embodiment, the tripping section (first tripping section) 14 that opens the first contact section C1 in response to the control signal S0 from the processing section 12 is configured so that the trip coil A1 and a switch SW0. The tripping section (first tripping section) 14 may include the opening/closing mechanism 11 .

Note that the specific structure of the opening/closing mechanism 11 can be a well-known structure, so a detailed explanation will be omitted.

A second tripping portion 17 is provided in the main electrical circuit L1 (L101). The second tripping section 17 interrupts the main electrical circuit L1 (L101) without depending on the control signal S0 when an abnormal current flows through the first contact section C1 (blocking operation). The abnormal current may include, for example, overcurrent due to overload, short circuit current, and the like.

The second tripping section 17 here includes a thermal tripping device. The thermal trip device includes a bimetallic plate 171.

When an overcurrent (abnormal current) flows through the bimetal plate 171 due to an overload, for example, the temperature of the bimetal plate 171 increases and one end thereof deforms so as to bend. When one end of the bimetal plate 171 is deformed, the deformed portion pushes the link mechanism in the opening/closing mechanism 11, thereby moving the movable contacts of the pair of first contact portions C1, C1. As a result, the pair of first contact portions C1, C1 are opened. At the same time, the movable contact of the second contact portion C2 is moved via the opening/closing mechanism 11, so that the second contact portion C2 is also opened. When the overcurrent caused by the overload stops, the temperature of the bimetal plate 171 decreases and the bimetal plate 171 returns to its original shape.

In this way, in the switch system 100 of the present embodiment, the second tripping section 17 that cuts off the main electric circuit L1 without depending on the control signal S0 when an abnormal current flows through the first contact section C1 is made of a bimetal plate. Contains 171. The second tripping section 17 may include the opening/closing mechanism 11.

The power supply section 16 is connected between the power supply side circuit L11 of one main circuit L1 (L101) and the power supply side circuit L11 of the other main circuit L1 (L102). In other words, the power supply section 16 is connected in parallel to the series circuit of the switch SW0, the trip coil A1, and the second contact section C2. The power supply unit 16 includes an appropriate circuit such as an AC/DC converter or a three-terminal regulator, and converts the power supplied from the external power supply 200 via the pair of primary side terminals 101, 101 into predetermined power. This generates operating power.

The power supply section 16 is connected to the pair of primary side terminals 101, 101 regardless of whether the pair of first contact sections C1, C1 are opened or closed. In other words, the power supply section 16 receives power from the external power supply 200 even if one or both of the pair of first contact sections C1, C1 is in an open state, that is, even if the switch system 100 is cut off. It is possible to generate operating power by receiving the supply of The operating power generated by the power supply unit 16 is supplied to the processing unit 12, the presentation unit 18, the communication unit 19, and the like.

The voltage detection unit 13 detects a voltage for determining whether the first contact portion C1 is in a closed state. Specifically, the voltage detection section 13 includes a pair of input terminals. One input terminal in the voltage detection section 13 is connected to the power supply side circuit L11 of the main circuit L1 (L101), and the other input terminal is connected to the connection point between the second contact section C2 and the trip coil A1 in the sub circuit L2. It is connected. That is, the pair of input terminals of the voltage detection section 13 are connected between both ends of a series circuit of the external power supply 200 (the pair of primary side terminals 101, 101) and the second contact section C2. Then, the voltage detection section 13 detects the voltage applied to this series circuit. The voltage detection unit 13 transmits a voltage detection signal S1 to the processing unit 12 if the detected voltage value is equal to or higher than a predetermined threshold value.

As described above, the second contact portion C2 is closed when the first contact portion C1 is in the closed state. Therefore, if the first contact portion C1 is in a closed state, the voltage from the external power supply 200 is applied between both ends of the series circuit, while on the other hand, if the first contact portion C1 is in an open state, the voltage from the external power supply 200 is applied between both ends of the series circuit. No voltage is applied across the series circuit. Therefore, by the voltage detection section 13 detecting whether or not a voltage is applied to the series circuit, it is possible to determine whether or not the first contact section C1 is in a closed state. In this way, the voltage detection section 13 detects the voltage of the electric circuit connected to the external power supply 200 only when the first contact section C1 is in the closed state. Further, the voltage detection unit 13 is not connected to the main circuit L1 where the first contact portion C1 is provided, but to the circuit (sub-current circuit L2) to which voltage is applied from the external power supply 200 only when current flows through the main circuit L1. Detecting voltage.

The current detection unit 15 detects the current flowing in the electric line (main electric line L1) connecting the external power supply 200 and the load B1. The current detection unit 15 detects the current flowing through one of the main electrical circuits L1 (L101) of the pair of main electrical circuits L1, L1. The current detection unit 15 includes a suitable current sensor including, for example, a Rogowski coil, a current transformer, a magnetoresistive (MR) element, a Hall element, etc., and detects the current flowing through the main circuit L1. The current detection unit 15 transmits a current signal S2 corresponding to the magnitude of the detected current to the processing unit 12.

The communication unit 19 has a function of communicating with the measurement adapter 4. The communication method between the communication unit 19 and the measurement adapter 4 is, for example, wired communication based on a communication standard such as a wired LAN (Local Area Network). The communication unit 19 receives an external signal transmitted from the measurement adapter 4 as the external system 8. Further, the communication unit 19 receives an external signal transmitted from the information terminal 61 or the controller 62 as the external system 8 using the measurement adapter 4 as a relay. Furthermore, the communication unit 19 acquires information (for example, electric power value, etc.) that the measurement adapter 4 has by communicating with the measurement adapter 4 . Furthermore, the communication unit 19 acquires information held by the controller 62 (for example, usage status of HEMS compatible equipment, etc.) by communicating with the controller 62 using the measurement adapter 4 as a relay. The communication unit 19 may directly receive an external signal transmitted from the information terminal 61 or the controller 62 as the external system 8 using, for example, a wireless communication function.

The processing unit 12 operates using operating power generated by the power supply unit 16. As described above, the power supply section 16 can generate operating power regardless of whether the pair of first contact sections C1, C1 are opened or closed. Therefore, the processing section 12 can also operate by receiving operating power from the power supply section 16 regardless of whether the pair of first contact sections C1, C1 are opened or closed.

The processing unit 12 includes a communication control unit 121, an opening/closing control unit 122, an abnormality detection unit 123, a state determination unit 124, a cause identification unit 125, and a presentation control unit 126. Note that the communication control unit 121, the opening/closing control unit 122, the abnormality detection unit 123, the state determination unit 124, the cause identification unit 125, and the presentation control unit 126 do not necessarily represent actual configurations, and the processing unit 12 It shows the functions realized by.

The processing unit 12 includes a computer system having a processor and memory. The computer system functions as the processing unit 12 by the processor executing an appropriate program. The program may be pre-recorded in a memory, or may be provided via a telecommunications line such as the Internet, or recorded on a non-transitory recording medium such as a memory card.

The communication control unit 121 controls the operation of the communication unit 19. The communication control unit 121 controls the communication unit 19 to receive an external signal from the external system 8 .

The opening/closing control unit 122 controls on/off of the switch SW0. Specifically, the opening/closing control unit 122 turns on the switch SW0 by transmitting a control signal S0 to the control terminal of the switch SW0.

The opening/closing control unit 122 transmits a control signal S0 to the switch SW0 when a predetermined condition is satisfied.

For example, the opening/closing control unit 122 transmits the control signal S0 when the abnormality detection unit 123 detects the occurrence of an abnormality regarding the switch system 100. Further, the opening/closing control unit 122 transmits the control signal S0, for example, when the external signal received by the communication unit 19 includes a command to shut off the main electrical circuit L1. That is, the opening/closing control section 122 (processing section 12) controls the control signal S0 based on an external signal transmitted from the external system 8 and received via the communication section 19.

The abnormality detection unit 123 detects the occurrence of an abnormality regarding the switch system 100.

The abnormality detected by the abnormality detection unit 123 includes overcurrent (short circuit current, overload current, etc.) flowing in the main electrical circuit L1. That is, the abnormality detection unit 123 detects an overcurrent (short circuit current, overload current, etc.) flowing in the main electric circuit L1 as an abnormality regarding the switch system 100. The abnormality detection unit 123 detects an overcurrent flowing through the main circuit L1, for example, by comparing the current value indicated by the current signal S2 from the current detection unit 15 with a threshold value.

Further, the abnormality detected by the abnormality detection unit 123 includes the occurrence of an arc in the wiring connected between the pair of secondary side terminals 102, 102 and the load B. That is, the abnormality detection unit 123 detects an arc occurring in the wiring connected to the pair of secondary side terminals 102, 102 as an abnormality regarding the switch system 100. The abnormality detection unit 123 determines whether or not an arc is occurring in the wiring, for example, using a technique similar to an arc fault circuit interrupter (AFCI). Arc short-circuit protection circuit breakers can detect arcs occurring in wiring by using electronic circuitry to recognize the current and voltage characteristics specific to arcs occurring in wiring. Based on a principle similar to this, the processing unit 12 determines whether or not an arc is occurring in the wiring.

When the abnormality detection unit 123 detects the occurrence of an abnormality regarding the switch system 100, the opening/closing control unit 122 transmits a control signal S0 to the switch SW0 to turn on the switch SW0. When the pair of first contact portions C1, C1 are in a closed state (that is, the second contact portion C2 is in a closed state), when switch SW0 is turned on, power from external power supply 200 is supplied to trip coil A1. , trip coil A1 is energized. As a result, the opening/closing mechanism 11 opens the pair of first contact portions C1, C1, and the main electric circuit L1 is cut off. That is, when the opening/closing control unit 122 of the processing unit 12 detects the occurrence of an abnormality regarding the switch system 100 in the closed state of the pair of first contact units C1, C1, the opening/closing control unit 122 opens the pair of first contact units C1, C1. The main electric circuits L1 and L1 are cut off.

The state determining unit 124 determines the state (open state or closed state) of the first contact portion C1.

The state determination unit 124 determines the state of the first contact portion C1 based on the detection result of the voltage detection unit 13. Specifically, while receiving the voltage detection signal S1 from the voltage detection section 13, the state determination section 124 determines that the second contact section C2 is in the closed state, that is, the pair of first contact sections C1, C1 is determined to be in a closed state. When the state determination unit 124 does not receive the voltage detection signal S1 from the voltage detection unit 13, the second contact portion C2 is in an open state, that is, the pair of first contact portions C1, C1 are in an open state. It is determined that there is. The processing unit 12 determines that the pair of first contact portions C1, C1 has changed from the closed state to the open state, based on the determination result (presence or absence of the voltage detection signal S1) of the state determination unit 124. It is possible to detect that the device system 100 has been shut down.

The cause identifying unit 125 identifies the cause when it is detected that the switch system 100 is shut off. The cause identifying unit 125 at least determines whether the cause of the shutoff of the switch system 100 is the processing unit 12 itself (opening/closing control unit 122).

For example, assume that it is detected that the switch system 100 is shut off within a predetermined determination period (for example, within several seconds) after the processing unit 12 (opening/closing control unit 122) transmits the control signal S0. In this case, the cause identification unit 125 determines that the cause of the shutdown of the switch system 100 is the shutdown control performed by the processing unit 12 itself (specifically, the switching control unit 122 transmits the control signal S0 and turns on the switch SW0. (to do). If the cause is determined to be the shutdown control by the processing unit 12 itself, the cause identification unit 125 further identifies the cause of the execution of the shutdown control. Candidates for the cause of the processing unit 12 executing cutoff control include, for example, reception of an external signal from the external system 8, overcurrent flowing through the main electrical circuit L1, and arcing in the wiring connected to the main electrical circuit L1. occurrence, etc. The cause identification unit 125 identifies the cause of the processing unit 12 executing the cutoff control from among these candidates.

On the other hand, if it is detected that the switch system 100 is shut off at a timing other than the above-described determination period, the cause identification unit 125 identifies that the cause is an external factor other than the processing unit 12. . Examples of external factors other than the processing section 12 include an opening operation of the operating handle 111 by the user, an operation of cutting off the main electric circuit L1 by the second tripping section 17, and the like.

When determining that the cause is an external factor other than the processing unit 12, the cause identifying unit 125 may identify the cause in more detail. For example, suppose that in a case where a temperature sensor that measures the temperature of bimetal plate 171 is provided, the temperature of bimetal plate 171 when switch system 100 is shut off is equal to or higher than a predetermined threshold temperature. In this case, the cause identification unit 125 may identify that the external cause is the interruption operation by the second tripping unit 17. Conversely, suppose that in a case where a temperature sensor is provided to measure the temperature of bimetal plate 171, the temperature of bimetal plate 171 when switch system 100 is shut off is less than a predetermined threshold temperature. In this case, the cause identifying unit 125 may identify that the external cause is the opening operation of the operating handle 111 by the user.

The presentation control unit 126 controls the operation of the presentation unit 18. The presentation unit 18 presents operational information regarding the operation of the switch system 10.

Here, the presentation unit 18 includes, for example, a plurality of LEDs. The plurality of LEDs in the presentation section 18 are provided in the housing of the branch breaker 3 at positions exposed through the exposure hole of the cover 92 of the cabinet 90. That is, the presentation unit 18 is located at a position where the user can view it when the user opens the lid 93 and views the distribution board 9 from the front.

The plurality of LEDs includes, for example, a first LED for indicating the state (open state or closed state) of the pair of first contact portions C1, C1. For example, when the presentation control unit 126 receives the voltage detection signal S1 from the voltage detection unit 13, the presentation control unit 126 determines that the pair of first contact portions C1, C1 are in a closed state, and lights up the first LED. On the other hand, when the voltage detection signal S1 is not received from the voltage detection section 13, the presentation control section 126 determines that the pair of first contact sections C1, C1 are in an open state, and turns off the first LED.

Further, the plurality of LEDs includes, for example, a plurality of second LEDs corresponding to the plurality of causes identified by the cause identification unit 125. For example, when the switch system 100 is shut off and the cause is identified by the cause identification unit 125, the presentation control unit 126 associates the plurality of second LEDs with the cause identified by the cause identification unit 125. Turn on the LED.

As described above, one of the causes that can be identified by the cause identification unit 125 may be the shutdown control of the processing unit 12. Therefore, it can be said that the operation information presented by the presentation section 18 includes information regarding the operation of the processing section 12. Further, one of the causes that can be identified by the cause identification unit 125 may be the blocking operation of the second tripping unit 17. Therefore, it can be said that the operation information presented by the presentation section 18 includes information regarding the operation of the second tripping section 17.

Here, power for lighting each of the plurality of LEDs is supplied from the power supply unit 16. That is, the presentation unit 18 operates using power supplied from the power supply unit 16. Therefore, like the processing section 12, the presentation section 18 can also operate (light up) regardless of whether the pair of first contact sections C1, C1 are opened or closed.

(3) Operation Hereinafter, the operation of the processing unit 12 of the switch system 100 of this embodiment will be explained with reference to the flowchart of FIG. 4.

When the pair of primary side terminals 101 , 101 of the switch system 100 are connected to the external power supply 200 , the power supply section 16 generates operating power using the power from the external power supply 200 and sends the operating power to the processing section 12 . supply The processing unit 12 is activated by operating power supplied from the power supply unit 16 (ST1) and starts operating. As mentioned above, since the power supply section 16 is connected to the power supply side circuit L11 in the main circuit L1, regardless of whether the pair of first contact sections C1, C1 are in an open state or a closed state. It is possible to generate operating power. Therefore, the processing section 12 is activated regardless of whether the pair of first contact sections C1, C1 are in an open state or a closed state.

When activated, the processing unit 12 determines whether or not it has received the voltage detection signal S1 from the voltage detection unit 13 (ST2).

When there is no voltage detection signal S1 (ST2: No), the processing unit 12 (state determining unit 124) determines that the pair of first contact portions C1, C1 are open. Then, the processing unit 12 (presentation control unit 126) turns off the first LED in the presentation unit 18 (maintains the light off), and makes it present that the pair of first contact portions C1, C1 are open (ST3 ). The processing unit 12 continues its operation until it detects the voltage detection signal S1 ``''.

If the voltage detection signal S1 is present (ST2: Yes), the processing unit 12 (state determining unit 124) determines that the pair of first contact portions C1, C1 are closed. Then, the processing unit 12 (presentation control unit 126) lights up the first LED in the presentation unit 18 to indicate that the pair of first contact portions C1, C1 are closed (ST4).

When the pair of first contact portions C1, C1 are closed, current from the external power supply 200 flows through the pair of main electrical circuits L1, L1 of the switch system 100. In this state, the processing unit 12 (abnormality detection unit 123) determines whether there is an abnormality in the switch system 100 (ST5). Here, as described above, the processing unit 12 (abnormality detection unit 123) determines whether there is an abnormality (overcurrent, wiring arc, etc.) in the switch system 100 based on the current signal from the current detection unit 15. Determine whether

When an abnormality is detected by the abnormality detection unit 123 (ST5: Yes), the processing unit 12 (switching control unit 122) transmits a control signal S0 to operate the first tripping unit 14, and the switch system 100 (ST6).

When the switch system 100 is shut off by transmitting the control signal S0, the processing unit 12 (cause identification unit 125) identifies the cause of the shutoff (ST7). In this case, since the shutdown control by the processing section 12 is the cause of the shutdown of the switch system 100, the processing section 12 (cause identification section 125) identifies the cause as the shutdown control (transmission of the control signal S0) (ST8 ). Furthermore, the processing unit 12 (cause identification unit 125) further identifies the cause of the abnormality in the switch system 100 (for example, overcurrent or arc in the wiring) for which the disconnection control is to be performed. Then, the processing unit 12 (presentation control unit 126) lights up the second LED corresponding to the identified cause to present the cause (ST9).

On the other hand, if no abnormality is detected in step ST5 (ST5: No), the processing unit 12 (communication control unit 121) determines whether the communication unit 19 has received an external signal including a command to cut off the main electric line L1. (ST10). When receiving an external signal including a command to cut off the main electric line L1 (ST10: Yes), the processing unit 12 (opening/closing control unit 122) transmits a control signal S0 to operate the first tripping unit 14, The switch system 100 is shut off (ST6). Furthermore, the processing unit 12 (cause identification unit 125) identifies the cause of the shutdown as shutdown control (ST7, ST8), and further identifies that the cause was reception of an external signal. Then, the processing unit 12 (presentation control unit 126) lights up the second LED corresponding to the identified cause to present the cause (ST9).

In step ST10, if the communication unit 19 has not received the external signal including the command to cut off the main electric line L1 (ST10: No), the processing unit 12 (state determination unit 124) receives the voltage detection signal from the voltage detection unit 13. It is determined whether S1 is being received (or continues to be received) (ST11).

In step ST11, if the voltage detection signal S1 is present (ST11: Yes), the processing unit 12 (state determining unit 124) determines that the pair of first contact portions C1, C1 are maintained closed. Then, the processing unit 12 (presentation control unit 126) lights up the first LED in the presentation unit 18 (maintains lighting) to indicate that the pair of first contact parts C1, C1 are closed (ST4 ).

In step ST11, if there is no voltage detection signal S1 (ST11: No), the processing unit 12 (state determination unit 124) determines that the pair of first contact portions C1, C1 are opened, that is, the switch system 100 is disconnected. It is determined that the Then, the processing unit 12 (cause identification unit 125) identifies the cause of the shutdown (ST12). In this case, the processing section 12 (opening/closing control section 122) is not transmitting the control signal S0, and the interruption control by the processing section 12 is not the cause of the interruption of the switch system 100. Therefore, the processing unit 12 (cause identification unit 125) identifies the cause as an external factor (opening operation of the operating handle 111 or blocking operation of the second tripping unit 17) (ST13). Then, the processing unit 12 (presentation control unit 126) lights up the second LED corresponding to the identified cause to present the cause (ST9).

In this way, in the switch system 100 of this embodiment, the power supply section 16 is connected to the power supply side circuit L11 between the primary side terminal 101 and the first contact section C1 in the main circuit L1. The processing unit 12 operates using operating power generated by the power supply unit 16. Therefore, the processing unit 12 can operate even when the first contact portion C1 is in the open state, and can cause the presentation unit 18 to present the disconnected state of the switch system 100, for example.

Further, in the switch system 100, the presentation section 18 and the communication section 19 also operate with the power supplied from the power supply section 16. Therefore, like the processing section 12, the presentation section 18 and the communication section 19 can operate regardless of whether the pair of first contact sections C1, C1 are opened or closed.

Here, in the switch system of the comparative example in which the power supply section 16 is connected to the load side electric circuit L12, when the pair of first contact sections C1 and C1 are opened, the power supply section 16 cannot generate operating power. First, the operations of the processing section 12, presentation section 18, etc. are also stopped. Therefore, in the switch system of the comparative example, it is not possible for the presentation unit 18 to present the cause of the shutoff of the switch system. In contrast, in the switch system 100 of the present embodiment, the power supply section 16 and the presentation section 18 are operable regardless of whether the pair of first contact sections C1, C1 are opened or closed. It is also possible to present the cause etc. in the presentation unit 18.

(3) Modifications The above embodiment is just one of various embodiments of the present disclosure. The embodiments described above can be modified in various ways depending on the design, etc., as long as the objective of the present disclosure can be achieved. Further, the same functions as the processing unit 12 according to the embodiment described above may be realized by a control method of the switch system 100, a computer program, a non-temporary recording medium on which a computer program is recorded, or the like.

Modifications of the above embodiment will be listed below. The modified examples described below can be applied in combination as appropriate.

The processing unit 12 of the switch system 100 in the present disclosure includes a computer system. A computer system mainly consists of a processor and a memory as hardware. The function of the processing unit 12 in the present disclosure is realized by the processor executing a program recorded in the memory of the computer system. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, or may be recorded on a non-transitory storage medium readable by the computer system, such as a memory card, optical disc, hard disk drive, etc. may be provided. A processor in a computer system is comprised of one or more electronic circuits including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuits such as IC or LSI referred to herein have different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, an FPGA (Field-Programmable Gate Array), which is programmed after the LSI is manufactured, or a logic device that can reconfigure the connections inside the LSI or reconfigure the circuit sections inside the LSI, may also be used as a processor. I can do it. The plurality of electronic circuits may be integrated into one chip, or may be provided in a distributed manner over a plurality of chips. A plurality of chips may be integrated into one device, or may be distributed and provided in a plurality of devices. The computer system herein includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including semiconductor integrated circuits or large-scale integrated circuits.

Furthermore, it is not an essential configuration for the switch system 100 that a plurality of functions in the switch system 100 are concentrated in one housing, and the components of the switch system 100 are distributed among multiple housings. may be provided. For example, the presentation unit 18 and the like may be provided in a casing that is separate from the casing of the switch system 100. Furthermore, at least some functions of the switch system 100, for example, some functions of the processing unit 12, may be realized by cloud (cloud computing) or the like. On the contrary, multiple functions of the switch system 100 may be integrated into one housing.

(3.1) First Modification Example A switch system 100 according to a first modification example will be described with reference to FIG. 5. The switch system 100 of this modification includes, in place of the current detection unit 15, an earth leakage detection unit that detects occurrence of electric leakage in the electric line (main electric line L1) connecting the external power supply 200 and the load B1. The earth leakage detection section here includes a zero-phase current transformer ZCT1. The processing unit 12 (abnormality detection unit 123) of the switch system 100 of this modification detects the occurrence of a leakage in the main electrical circuits L1, L1 as an abnormality occurring in the switch system 100. The other configurations are the same as the switch system 100 of the embodiment, so the description will be omitted.

Also in the switch system 100 of this modification, the processing unit 12 can continue to operate even if the first contact portion C1 is in the open state.

Note that the switch system 100 may include both the current detection section 15 and the earth leakage detection section.

(3.2) Second Modification Example A switch system 100 according to a second modification example will be described with reference to FIG. 6. The switch system 100 of this modification does not include the second contact portion C2, and the trip coil A1 is connected to the load-side electrical circuit L12 of the main electrical circuit L1 (L102). In other words, the auxiliary electric circuit L2 is provided straddling between the connection point P1 of one main electric circuit L101 with the power supply side electric circuit L11 and the connection point P3 of the other main electric circuit L102 with the load side electric circuit L12. ing. The voltage detection unit 13 is connected across the power supply side circuit L11 of one main circuit L1 (L101) and the load side circuit L12 of the other main circuit L1 (L102), and is connected to the external power supply 200. The voltage across the series circuit with the first contact portion C1 is detected. The other configurations are the same as the switch system 100 of the embodiment, so the description will be omitted.

Also in the switch system 100 of this modification, the processing unit 12 can continue to operate even if the first contact portion C1 is in the open state.

(3.3) Other Modifications In a modification, the second tripping section 17 may include an electromagnetic tripping device. For example, the electromagnetic tripping device moves when the main circuit coil provided in the main circuit L1 and the magnitude of the magnetic flux generated in the main circuit coil exceed a threshold value, and connects the contact portion C1 via the opening/closing mechanism 11. and a pin for opening the terminal.

In a modified example, the presentation unit 18 may include a display device capable of displaying character strings and/or images. The display device may include, for example, a liquid crystal display, an organic EL display, or the like. In this case, the presentation control unit 126 may cause the display device to display a character string and/or an image related to the cause identified by the cause identification unit 125.

In a modified example, the presentation unit 18 may include a sound output device such as a speaker that can output sound information. In this case, the presentation control unit 126 may cause the sound output device to output audio information regarding the cause identified by the cause identification unit 125.

In one variant, the switch system 100 may not be the branch breaker 3. Switch system 100 may be realized as main breaker 2, for example.

In a modified example, the switch system 100 may include a protection element provided in the sub-electrical circuit L2. The protection element may be, for example, a varistor.

In a variation, the processing unit 12 may receive the current signal from the measurement adapter 4.

(4) Summary As explained above, the switch system (100) according to the first aspect includes a contact part (C1), a power supply part (16), a processing part (12), and a tripping part (14). ) and. The contact portion (C1) is provided in an electric path (L1) that connects an external power source (200) and a load (B1). The power supply section (16) is connected to a power supply side electrical circuit (L11) between the external power supply (200) and the contact section (C1) in the electrical circuit (L1). The processing section (12) operates using operating power generated by the power supply section (16). The tripping portion (14) has a trip coil (A1) that is excited by energization. The tripping section (14) opens the contact section (C1) when the trip coil (A1) is excited in response to a control signal (S0) from the processing section (12). The power supply section (16) is connected to the external power supply (200) regardless of whether the contact section (C1) is opened or closed. The trip coil (A1) is provided in an electric line (auxiliary electric line L2) that is connected to the external power supply (200) only when the contact portion (C1) is in a closed state.

According to this aspect, the processing unit (12) is supplied with operating power from the power supply unit (16) regardless of whether the contact unit (C1) is opened or closed, so even if the contact unit (C1) is in an open state, Operation is possible. In addition, since the trip coil (A1) is not energized when the contact portion (C1) is open, the situation where the trip coil (A1) is inadvertently energized is prevented, and deterioration of the trip coil (A1) is suppressed. be done.

In the first aspect, the switch system (100) of the second aspect includes a second contact part (C2) in addition to the first contact part (C1) as the contact part (C1). The second contact portion (C2) is configured to open when the first contact portion (C1) is in an open state, and to close when the first contact portion (C1) is in a closed state. The trip coil (A1) is connected to the power supply side electric circuit (L11) via the second contact portion (C2).

According to this aspect, since the trip coil (A1) is not energized when the first contact portion (C1) is in the open state, a situation where the trip coil (A1) is inadvertently energized is prevented, and the trip coil (A1) is not energized. ) deterioration etc. are suppressed.

In the first or second aspect, the switch system (100) of the third aspect includes a voltage detection section (13) that detects a voltage for determining whether the contact section (C1) is in a closed state. ). The voltage detection section (13) detects the voltage of the electric circuit connected to the external power source (200) only when the contact section (C1) is in the closed state.

According to this aspect, since no voltage is applied to the voltage detection section (13) when the first contact section (C1) is in the open state, a situation in which voltage is inadvertently applied to the voltage detection section (13) is prevented. This suppresses deterioration of the voltage detection section (13). In this aspect, it is preferable that the voltage detection section (13) is connected to the power supply side electric circuit (L11) via the second contact section (C2).

The switch system (100) of the fourth aspect, in any one of the first to third aspects, further includes a presentation unit (18) that presents operational information regarding the operation of the switch system (100). The presentation section (18) operates with power supplied from the power supply section (16).

According to this aspect, it becomes possible to present the operation information by the presentation unit (18) regardless of the state (closed state or open state) of the contact portion (C1).

In the switch system (100) of the fifth aspect, in the fourth aspect, the operation information presented by the presentation section (18) includes information regarding the operation of the processing section (12).

According to this aspect, the presentation section (18) can present information regarding the operation of the processing section (12) regardless of the state (closed state or open state) of the contact section (C1). .

In the fourth or fifth aspect, the switch system (100) of the sixth aspect includes, in addition to the first tripping section (14) as the tripping section (14), a second tripping section (17). Equipped with The second tripping section (17) disconnects the electrical circuit (L1) connecting the external power supply (200) and the load (B1) without depending on the control signal (S0) when an abnormal current flows through the contact section (C1). to be cut off. The operation information presented by the presentation section (18) includes information regarding the operation of the second tripping section (17).

According to this aspect, the presentation section (18) can present information regarding the operation of the second tripping section (17) regardless of the state (closed state or open state) of the contact section (C1). It becomes possible.

In any one of the first to sixth aspects, the switch system (100) of the seventh aspect is configured to detect a current flowing in an electric line (L1) connecting an external power source (200) and a load (B1). It further includes a detection section (15).

According to this aspect, the processing unit (12) can refer to information regarding the current in the electric circuit (L1).

In any one of the first to seventh aspects, the switch system (100) of the eighth aspect detects the occurrence of a leakage in the electric path (L1) connecting the external power source (200) and the load (B1). It further includes an earth leakage detection unit (zero-phase current transformer ZCT1).

According to this aspect, the processing unit (12) can refer to information regarding leakage in the electrical circuit (L1).

The switch system (100) of the ninth aspect, in any one of the first to eighth aspects, further includes a communication unit (19) that communicates with the external system (8). The processing unit (12) controls the control signal (S0) based on an external signal transmitted from the external system (8) and received via the communication unit (19).

According to this aspect, it becomes possible to operate the tripping section (14) based on an external signal.

A distribution board (9) according to a tenth aspect includes the switch system (100) according to any one of the first to ninth aspects, and a distribution board cabinet (90) that accommodates the switch system (100). and.

According to this aspect, a distribution board (9) including a switch system (100) can be provided.

The configurations according to the second to ninth aspects are not essential to the switch system (100) and can be omitted as appropriate.

100 Switch system 12 Processing section 13 Voltage detection section 14 Tripping section (first tripping section)
15 Current detection section 16 Power supply section 17 Second trip section 18 Presentation section 19 Communication section A1 Trip coil C1 Contact section (first contact section)
C2 Second contact part L1 Electric circuit (main electric circuit)
L11 Power supply side circuit L2 Sub-current circuit S0 Control signal ZCT1 Zero-phase current transformer 200 External power supply B1 Load 9 Distribution board 90 Distribution board cabinet

Claims (9)

A contact section provided in an electrical circuit connecting an external power source and a load,
a power supply section connected to a power supply side electrical circuit between the external power source and the contact section among the electrical circuits;
a processing unit that operates using operating power generated by the power supply unit;
a tripping unit having a trip coil that is excited by energization, and opening the contact portion when the trip coil is excited in response to a control signal from the processing unit;
a voltage detection section that detects a voltage for determining whether the contact section is in a closed state;
Equipped with
The power supply section is connected to the external power supply regardless of whether the contact section is open or closed,
The trip coil is provided in an electric line that is connected to the external power source only when the contact portion is in a closed state,
The voltage detection unit detects a voltage of an electric line connected to the external power source only when the contact portion is in a closed state, and in which the trip coil is provided.
Switchgear system. further comprising a presentation unit that presents operational information regarding the operation of the switch system,
The presentation unit operates with power supplied from the power supply unit.
The switch system according to claim 1. A switch system,
A contact section provided in an electrical circuit connecting an external power source and a load,
a power supply section connected to a power supply side electrical circuit between the external power source and the contact section among the electrical circuits;
a processing unit that operates using operating power generated by the power supply unit;
a tripping unit having a trip coil that is excited by energization, and opening the contact portion when the trip coil is excited in response to a control signal from the processing unit;
a presentation unit that presents operational information regarding the operation of the switch system;
Equipped with
The power supply section is connected to the external power supply regardless of whether the contact section is open or closed,
The trip coil is provided in an electric line that is connected to the external power source only when the contact portion is in a closed state,
The presentation unit operates with power supplied from the power supply unit,
The operation information presented by the presentation unit includes information regarding the operation of the processing unit.
Switchgear system. A switch system,
A contact section provided in an electrical circuit connecting an external power source and a load,
a power supply section connected to a power supply side electrical circuit between the external power source and the contact section among the electrical circuits;
a processing unit that operates using operating power generated by the power supply unit;
a first tripping section having a trip coil that is excited by energization, and opening the contact section when the trip coil is excited in response to a control signal from the processing section;
a second tripping section that interrupts the electric path connecting the external power source and the load without depending on the control signal when an abnormal current flows through the contact section;
a presentation unit that presents operational information regarding the operation of the switch system;
Equipped with
The power supply section is connected to the external power supply regardless of whether the contact section is open or closed,
The trip coil is provided in an electric line that is connected to the external power source only when the contact portion is in a closed state,
The presentation unit operates with power supplied from the power supply unit,
The operation information presented by the presentation section includes information regarding the operation of the second tripping section.
Switchgear system. In addition to the first contact part as the contact part, a second contact part is provided,
The second contact portion is configured to open when the first contact portion is in an open state and close when the first contact portion is in a closed state,
The trip coil is connected to the power supply circuit via the second contact portion.
The switch system according to any one of claims 1 to 4. further comprising a current detection unit that detects a current flowing in the electric path connecting the external power source and the load;
The switch system according to any one of claims 1 to 5. further comprising an earth leakage detection unit that detects occurrence of earth leakage in the electric line connecting the external power source and the load;
The switch system according to any one of claims 1 to 6. It further includes a communication unit that communicates with an external system,
The processing unit controls the control signal based on an external signal transmitted from the external system and received via the communication unit.
The switch system according to any one of claims 1 to 7. A switch system according to any one of claims 1 to 8,
a distribution board cabinet accommodating the switch system;
Equipped with
Distribution board.

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