JP7370004B2 - Electrical leakage detection system, automatic maintenance inspection system, and electric leakage detection method - Google Patents

Description

The present disclosure generally relates to an earth leakage detection system, an automatic maintenance inspection system, and an earth leakage detection method, and more particularly, the present disclosure relates to an earth leakage detection system, an automatic maintenance inspection system, and an electric leakage detection system that detects an electric leakage between a branch breaker and a liability demarcation point. Regarding a method for detecting the amount of electric leakage.

The earth leakage breaker (earth leakage detection system) described in Patent Document 1 includes a zero-phase current transformer, an earth leakage detection circuit, and an earth leakage display member. The earth leakage detection circuit detects the occurrence of earth leakage based on the detection current input from the secondary output line of the zero-phase current transformer. The electrical leakage display member displays a detected state and a non-detected state of electrical leakage.

Japanese Patent Application Publication No. 2010-251251

In equipment such as customer equipment in which the earth leakage breaker described in Patent Document 1 is installed, periodic inspections are performed at a frequency such as once every four years. For example, the worker performs the following inspection work. The worker goes to the location where the earth leakage breaker is installed and looks at the display on the earth leakage display member to check whether there is an earth leakage. Additionally, the worker measures the leakage current in the electrical circuit using a clamp meter or the like. There has been a need to reduce the effort involved in such inspection work.

An object of the present disclosure is to provide an electric leakage amount detection system, an automatic maintenance inspection system, and an electric leakage amount detection method that can reduce the effort required to inspect customer equipment.

A leakage amount detection system according to one aspect of the present disclosure includes a breaker installed in consumer equipment. The breaker includes a leakage amount detection section, a determination section, and a communication section. The electric leakage amount detection section detects the electric leakage amount in the breaker . The determination unit generates abnormality determination information regarding the presence or absence of an abnormality in the consumer equipment based on the amount of electric leakage detected by the amount of electric leakage detection unit. The communication unit outputs inspection information. The inspection information includes information regarding the amount of electric leakage detected by the amount of electric leakage detection section and the abnormality judgment information generated by the judgment section .
A leakage amount detection system according to another aspect of the present disclosure includes a breaker installed in consumer equipment. The breaker includes a leakage amount detection section, a calculation section, and a communication section. The electric leakage amount detection section detects the electric leakage amount in the breaker. The calculation unit calculates an integrated value of the electrical leakage amount detected by the electrical leakage amount detection unit, and generates information regarding the integrated value. The communication unit outputs inspection information. The inspection information includes information regarding the amount of electrical leakage detected by the amount of electrical leakage detection section, and information regarding the integrated value generated by the calculation section.

The automatic maintenance and inspection system according to one aspect of the present disclosure receives the inspection information from the communication unit of the leakage amount detection system.

A leakage amount detection method according to an aspect of the present disclosure causes a breaker installed in consumer equipment to perform a detection step, a determination step, and a notification step. In the detection step, the amount of leakage in the breaker is detected. In the determination step, abnormality determination information regarding the presence or absence of an abnormality in the consumer equipment is generated based on the amount of leakage detected in the detection step. In the notification step, inspection information is output. The inspection information includes information regarding the amount of leakage detected in the detection step and the abnormality determination information generated in the determination step .
A leakage amount detection method according to another aspect of the present disclosure causes a breaker installed in consumer equipment to perform a detection step, a calculation step, and a notification step. In the detection step, the amount of leakage in the breaker is detected. In the calculating step, an integrated value of the amount of electrical leakage detected in the detecting step is calculated, and information regarding the integrated value is generated. In the notification step, inspection information is output. The inspection information includes information regarding the amount of leakage detected in the detection step and information regarding the integrated value generated in the calculation step.

The present disclosure has the advantage that it is possible to reduce the effort required to inspect customer equipment.

FIG. 1 is a block diagram of a main breaker including a leakage amount detection system according to an embodiment, a distribution board including the main breaker, and customer equipment including the distribution board. FIG. 2 is a block diagram of a main breaker including the leakage amount detection system as described above. FIG. 3 is a front view of a distribution board including the leakage amount detection system same as above. FIG. 4 is a flowchart corresponding to an example of the operation of the leakage amount detection system as described above.

Hereinafter, the leakage amount detection system X1 according to the embodiment will be described using the drawings. However, the embodiment described below is only one of various embodiments of the present disclosure. The embodiments described below can be modified in various ways depending on the design, etc., as long as the objective of the present disclosure can be achieved. Further, FIG. 3 is a schematic diagram, and the ratio of the size and thickness of each component in the diagram does not necessarily reflect the actual size ratio.

As shown in FIG. 1, the leakage amount detection system X1 of this embodiment is provided in the main breaker 3. The leakage amount detection system X1 includes a zero-phase current transformer 30 (earth leakage amount detection section) and a communication section 7. The zero-phase current transformer 30 detects the amount of current leakage between the branch breaker 2 and the responsibility demarcation point 102 of the consumer equipment E1 where the branch breaker 2 is installed. The communication unit 7 outputs inspection information including information regarding the amount of leakage detected by the zero-phase current transformer 30.

According to the present embodiment, the inspection information output from the communication unit 7 can be acquired without the need for a worker to go to the consumer equipment E1 where the zero-phase current transformer 30 and the leakage amount detection system X1 are installed. With this, at least a part of the inspection work of the customer equipment E1 can be replaced. Therefore, it is possible to reduce the effort required to inspect the customer equipment E1.

As described above, the leakage amount detection system X1 is provided in the main breaker 3. That is, in this embodiment, an earth leakage breaker is employed as the main breaker 3. The zero-phase current transformer 30 (earth leakage detection section) is provided in the main breaker 3 (earth leakage breaker). In this embodiment, the drop-in line 200, the connection line 201 in the main breaker 3, and the conductive bar 202 constitute a main line. The zero-phase current transformer 30 is provided on the main line (connection line 201). That is, the zero-phase current transformer 30 detects the amount of current leakage in the main line (connection line 201).

The master breaker 3 is provided in the distribution board 1. The distribution board 1 is installed, for example, in residential buildings such as detached houses and apartment complexes, or in non-residential buildings such as offices, multi-tenant buildings, factories, and public facilities.

As shown in FIG. 3, the distribution board 1 includes a cabinet 10, a main breaker 3, a plurality of branch breakers 2 (23 in FIG. 3, of which only three are shown in FIG. 1), and a measuring section 41. , a master current sensor CT1 (see FIG. 1), a current measuring device 42 (see FIG. 1), and a lightning arrester 43. The main breaker 3 , the plurality of branch breakers 2 , the measuring section 41 , the main current sensor CT1 , the current measuring device 42 , and the lightning arrester 43 are housed in the cabinet 10 . That is, the zero-phase current transformer 30 (leakage amount detection unit) of the main breaker 3 is arranged inside the cabinet 10 of the distribution board 1. The cabinet 10 includes a box-shaped body 12 with an open front and a cover that covers the front of the body 12. The cover is movably attached to the body 12 between a closed position and an open position. The closed position is a position in which the front surface of the body 12 is covered, and the open position is a position in which at least a portion of the front surface of the body 12 is opened. The cabinet 10 is attached to a wall of a facility, for example.

The main breaker 3 includes three primary terminals 31 and three secondary terminals 32 (see FIG. 2). The main breaker 3 includes three contacts C1 (see FIG. 2) connected to electric paths (connection lines 201) between three primary terminals 31 and three secondary terminals 32. The main breaker 3 includes an operating lever 33 for turning on or off the three contacts C1. The operating lever 33 is arranged on the front surface of the main breaker 3. Further, the main breaker 3 includes an opening/closing mechanism section 51 (see FIG. 2). The opening/closing mechanism section 51 turns off the three contacts C1 when an abnormal state occurs such as leakage current or overcurrent (overload current, etc.) flowing in the main breaker 3.

The distribution board 1 of this embodiment employs a single-phase three-wire system as a power distribution system. Therefore, a single-phase three-wire type drop-in line 200 is electrically connected to the three primary side terminals 31 of the main breaker 3 . The drop-in line 200 includes three electric wires. The three primary side terminals 31 are electrically connected to a system power supply PS1 (commercial power supply) (see FIG. 1) via a drop-in line 200. In this embodiment, the lead-in wire 200 is directly connected to three screw terminals 124 (connection terminals) arranged on the body 12 of the cabinet 10. The three screw terminals 124 and the three primary side terminals 31 of the main breaker 3 are electrically connected via three wiring members 125. Note that it is not essential that the distribution board 1 include the three screw terminals 124 and the three wiring members 125, and the drop-in line 200 may be directly connected to the three primary side terminals 31 of the main breaker 3.

As shown in FIG. 1, the drop-in line 200 is connected to the air switch 101. System power supply PS1 and main breaker 3 are electrically connected via air switch 101 and drop-in line 200. The air switch 101 corresponds to a demarcation point 102 of responsibility between the consumer equipment E1 in which the distribution board 1 of this embodiment is installed and the electric power company.

Furthermore, three conductive bars 202 are electrically connected to the three secondary terminals 32 of the main breaker 3 . That is, the three secondary terminals 32 include a first voltage pole (L1 phase) conductive bar, a second voltage pole (L2 phase) conductive bar, and a neutral pole (N phase) conductive bar. connected.

There are two branch breakers 2, one for 100V and one for 200V. The two primary side terminals of the 100V branch breaker 2 are electrically connected to one of the first voltage pole conductive bar and the second voltage pole conductive bar, and the neutral pole conductive bar. The two primary side terminals of the 200V branch breaker 2 are electrically connected to the conductive bar of the first voltage pole and the conductive bar of the second voltage pole.

The distribution board 1 includes a plurality of circuits 8. Each circuit 8 includes a branch breaker 2 and is electrically connected to the main line (conductive bar 202) via the branch breaker 2.

The “circuit 8” in the present disclosure is each of a plurality of branch circuits that are electrically connected to the main line (conductive bar 202) and branched from the main line (conductive bar 202). In this embodiment, the circuit 8 includes, in addition to the branch breaker 2, wiring 81 (two wires), an outlet 82, and a load 83. One end of the wiring 81 is electrically connected to two secondary side terminals of the branch breaker 2. The other end of the wiring 81 is electrically connected to an outlet 82 . The outlet 82 and the load 83 are arranged outside the cabinet 10 of the distribution board 1. The load 83 is, for example, equipment such as a lighting device, an air conditioner, a television receiver, or a hot water supply facility. Load 83 is electrically connected to branch breaker 2 via wiring 81 and outlet 82 . Note that in at least some of the circuits 8, the branch breaker 2 and the load 83 may be electrically connected via a wiring device such as a wall switch instead of the outlet 82.

The measurement unit 41 is electrically connected to the main current sensor CT1 and the current measurement device 42. The main current sensor CT1 is, for example, a Rogowski coil or a current transformer. The master current sensor CT1 measures the current flowing through the master breaker 3. The current measuring device 42 has a plurality of current sensors CT2. Each of the plurality of current sensors CT2 is, for example, a Rogowski coil or a current transformer. The plurality of current sensors CT2 correspond to the plurality of branch breakers 2 on a one-to-one basis. Each of the plurality of current sensors CT2 measures the current flowing through the corresponding branch breaker 2.

The measurement unit 41 has a function (measurement function) of calculating power based on the currents measured by the master current sensor CT1 and the plurality of current sensors CT2. More specifically, the measurement unit 41 converts each of the currents measured by the master current sensor CT1 and the plurality of current sensors CT2 into electric power (instantaneous electric power). The measuring unit 41 has a function of obtaining power amount data by integrating the collected instantaneous power data over a predetermined period of time.

As described above, the master breaker 3 is equipped with the leakage amount detection system X1. The leakage amount detection system X1 includes a zero-phase current transformer 30, a processing section 6, and a communication section 7. As shown in FIG. 2, the main breaker 3 further includes a test circuit 53. The test circuit 53 is a circuit for creating a pseudo electrical leakage state in the main line.

The zero-phase current transformer 30 includes a toroidal core. Three connecting wires 201 pass through the central hole of the toroidal core as primary windings. Furthermore, a lead wire 531 included in the test circuit 53 also passes through the center hole of the toroidal core as a primary winding. That is, the three connecting wires 201 as part of the main wire and the auxiliary wire (lead wire 531) pass through the central hole of the toroidal core as a primary winding. The secondary winding of the zero-phase current transformer 30 is electrically connected to the processing section 6.

No current flows through the lead wire 531 except during the leakage detection test. Here, a case other than the time of an earth leakage detection test will be described. When there is no leakage in the main line (drop-in line 200, connection line 201 or conductive bar 202), the primary current passing through the primary winding of the zero-phase current transformer 30 is balanced, so zero-phase current transformation occurs. No current flows through the secondary winding of the device 30. When a leakage occurs in the main line, an unbalance occurs in the primary current passing through the primary winding of the zero-phase current transformer 30, so that current flows through the secondary winding of the zero-phase current transformer 30. That is, the zero-phase current transformer 30 detects the amount of current leakage and outputs a current corresponding to the amount of current leakage from the secondary winding. The processing unit 6 acquires the current flowing through the secondary winding of the zero-phase current transformer 30. Further, the processing unit 6 outputs a signal including information regarding the magnitude of the acquired current (leakage amount) to the outside of the distribution board 1 via the communication unit 7.

As shown in FIG. 1, a repeater 91 is installed in a facility (customer equipment E1) where the distribution board 1 is installed. The repeater 91 is installed outside the cabinet 10 of the distribution board 1. The relay 91 relays communication between the communication unit 7 of the main breaker 3 and the external device 93. Repeater 91 is, for example, a smart meter or an internet modem.

The communication unit 7 includes a communication interface for communicating with the repeater 91. Relay 91 includes a communication interface for communicating with communication section 7 and external device 93 . The form of communication between the repeater 91 and the communication unit 7 and the form of communication between the repeater 91 and the external device 93 may be wired communication or wireless communication. In this embodiment, the repeater 91 communicates with the communication unit 7 by wire and communicates with the external device 93 wirelessly. In this embodiment, the method of wireless communication between the repeater 91 and the external device 93 is wireless communication via the network 92 using radio waves as a medium. Note that the wireless communication method between the repeater 91 and the external device 93 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.

For example, the communication unit 7 communicates with the communication units 7 of the other distribution boards 1 and the smart meters in order to suppress communication traffic with the communication units 7 of the other distribution boards 1, smart meters, etc. The timing of communication is determined according to the communication status of the communication units 7 of the other plurality of distribution boards 1, smart meters, etc.

Communication unit 7 outputs inspection information to external device 93 via repeater 91 . The inspection information includes information regarding the amount of leakage detected in the zero-phase current transformer 30. The unit of the amount of leakage output from the communication unit 7 is, for example, mA (milliampere) or A (ampere). Furthermore, the processing unit 6 records the amount of leakage detected by the zero-phase current transformer 30 one by one. The communication unit 7 outputs information regarding the amount of electrical leakage recorded in the processing unit 6.

External device 93 is, for example, a server computer or a personal computer. The external device 93 is installed, for example, outside the premises of the facility (customer equipment E1) where the distribution board 1 is installed. That is, the communication unit 7 outputs the inspection information via the repeater 91 to the external device 93 installed outside the facility (customer equipment E1) where the distribution board 1 is installed. In the present embodiment, the external device 93 is owned by a business operator (power company, electrical safety association, electrical work association, etc.) that performs maintenance and inspection of the facility (customer equipment E1) in which the distribution board 1 is installed. I am assuming that. However, the external device 93 may be installed within the premises of the facility (customer equipment E1) where the distribution board 1 is installed. Further, the external device 93 may be owned by, for example, a manager of a facility (customer equipment E1) where the distribution board 1 is installed.

The repeater 91 is used as an automatic maintenance inspection system that receives inspection information from the communication unit 7 of the leakage amount detection system X1. Further, the external device 93 is used as an automatic maintenance inspection system that receives inspection information from the communication unit 7 of the leakage amount detection system X1.

As shown in FIG. 2, the processing section 6 includes a determining section 61, a calculating section 62, and a counter 63. The processing unit 6 includes a computer system having one or more processors and memory. At least some of the functions of the processing unit 6 are realized by the processor of the computer system executing a program recorded in the memory of the computer system. The program may be recorded in a memory, provided through a telecommunications line such as the Internet, or provided recorded on a non-temporary recording medium such as a memory card.

The determining unit 61 determines whether or not there is an abnormality in the customer equipment E1 based on the inspection information, as will be described later. The consumer equipment E1 here includes the distribution board 1. Therefore, the consumer equipment E1 includes a zero-phase current transformer 30. Furthermore, the consumer equipment E1 may include a plurality of outlets 82 and a plurality of loads 83 that are electrically connected to the plurality of branch breakers 2 of the distribution board 1. The distribution board 1 also includes a grid breaker 44 (see FIG. 3). The three conductive bars 202 can be electrically connected to distributed power sources such as solar power generation equipment and wind power generation equipment, and storage batteries via the grid breaker 44 . Consumer equipment E1 may include a distributed power source and a storage battery. Further, the consumer equipment E1 may include a repeater 91.

The inspection information includes information regarding the temperature of the configuration of the consumer equipment E1. This will be explained below.

The electricity distribution board 1 includes at least one temperature sensor 45. The temperature sensor 45 is, for example, a thermistor. In FIG. 1, a temperature sensor 45 is arranged near the three primary side terminals 31 of the main breaker 3, and this temperature sensor 45 detects the temperature of the three primary side terminals 31. Further, a temperature sensor 45 is arranged near the two primary terminals of each of the plurality of branch breakers 2, and each temperature sensor 45 detects the temperature of the two primary terminals. Further, a temperature sensor 45 is arranged inside each of the plurality of outlets 82, and each temperature sensor 45 detects the temperature inside the outlet 82. In this way, the temperature sensor 45 detects the temperature of each of the primary terminal 31 of the main breaker 3, the primary terminal of the branch breaker 2, and the outlet 82, which are the components of the consumer equipment E1. Note that "detecting the temperature of the configuration of the customer equipment E1" is not limited to detecting the temperature of the configuration of the customer equipment E1 itself, but is also limited to detecting the temperature of the configuration of the customer equipment E1, or the temperature of the configuration of the customer equipment E1. It also includes detecting the temperature of components in the vicinity of the components of the home equipment E1.

Information regarding the temperature detected by the temperature sensor 45 is output to the communication section 7 of the main breaker 3. The communication unit 7 outputs information regarding temperature as part of the inspection information. That is, the communication unit 7 outputs inspection information including information regarding temperature to the external device 93 via the repeater 91. Furthermore, the processing unit 6 records information regarding the temperature detected by the temperature sensor 45 one by one. The communication unit 7 outputs information regarding the temperature recorded in the processing unit 6.

Communication between the temperature sensor 45 installed near the branch breaker 2 or the outlet 82 and the communication unit 7 is, for example, wireless communication, power line carrier communication, or wired communication via a communication line provided separately from the power line. This is done by communication.

In addition, the electricity distribution board 1 may be equipped with the temperature sensor 45 arrange|positioned near the three secondary side terminals 32 of the master breaker 3. Further, the distribution board 1 may include a temperature sensor 45 arranged near the two secondary terminals of the branch breaker 2. The communication unit 7 may output information regarding the temperatures detected by these temperature sensors 45 as part of the inspection information.

In each of the main breaker 3 and the branch breaker 2, a temperature sensor 45 disposed near the main breaker 3 and the branch breaker 2 detects a temperature rise due to poor contact between the primary terminal or the secondary terminal and the wiring. Furthermore, the temperature sensor 45 disposed inside the outlet 82 detects a temperature rise due to poor contact between the outlet 82 and the plug, or excessive current flowing through the outlet 82 .

Further, the calculation unit 62 (see FIG. 2) of the processing unit 6 of the main breaker 3 calculates the integrated value of the amount of leakage detected by the zero-phase current transformer 30. For example, the calculation unit 62 integrates the amount of leakage detected by the zero-phase current transformer 30 over a predetermined period of time. The calculation unit 62 resets the integrated value every predetermined period. Alternatively, the calculation unit 62 may continue to constantly integrate the amount of leakage detected by the zero-phase current transformer 30. Furthermore, the calculation unit 62 may reset the integrated value when a reset signal is input. The reset signal may be input from outside the main breaker 3 (for example, external device 93), or may be generated by the main breaker 3, for example. The communication unit 7 outputs information regarding the integrated value of the amount of leakage detected by the zero-phase current transformer 30 as part of the inspection information. That is, the communication unit 7 outputs inspection information including information regarding the integrated value of the amount of leakage detected by the zero-phase current transformer 30 to the external device 93 via the repeater 91.

Further, when a surge voltage higher than a predetermined limit voltage is applied to the lightning arrester 43, the surge current is bypassed, and the subsequent current is then cut off. The communication unit 7 of the main breaker 3 acquires the operation information of the lightning arrester 43 from the lightning arrester 43 . The counter 63 (see FIG. 2) of the processing unit 6 counts the number of times the surge arrester 43 bypasses the surge current. The communication unit 7 outputs the operation information of the lightning arrester 43 as part of the inspection information. That is, the communication unit 7 outputs inspection information including operation information of the lightning arrester 43 to the external device 93 via the repeater 91. The operation information of the lightning arrester 43 outputted from the communication unit 7 may include information on the number of times the surge arrester 43 bypasses the surge current. Further, the operation information of the lightning arrester 43 outputted from the communication unit 7 may include real-time information as to whether the lightning arrester 43 is performing an operation to bypass the surge current.

Communication between the lightning arrester 43 and the communication unit 7 is performed, for example, by wireless communication, power line carrier communication, or wired communication via a communication line provided separately from the power line.

As shown in FIG. 2, the test circuit 53 includes a lead wire 531 and a test switch 532. The lead wire 531 electrically connects the connection wire 201 corresponding to the first voltage line and the connection wire 201 corresponding to the second voltage line. The test switch 532 switches the lead wire 531 between a conductive state and a non-conductive state. The master breaker 3 has a test button 54 that accepts mechanical operation input by a worker. Test switch 532 is turned on in response to an operation input to test button 54 . When the test switch 532 is turned on, current flows through the lead wire 531, causing imbalance in the primary current passing through the primary winding of the zero-phase current transformer 30. That is, in the test circuit 53, when the test switch 532 is turned on by operating the test button 54, the connection wire 201 corresponding to the first voltage line and the connection wire 201 corresponding to the second voltage line are connected to the lead wire 531. and the test switch 532. As a result, a current flows through the lead wire 531 (auxiliary wire) passing through the toroidal core of the zero-phase current transformer 30, and an imbalance occurs in the primary current passing through the primary winding of the zero-phase current transformer 30. In other words, a pseudo electrical leakage state occurs. In response, the opening/closing mechanism section 51 opens the three contacts C1. That is, the electric path including the three connection lines 201 is cut off.

Further, the main breaker 3 is equipped with a drive switch 55. The drive switch 55 is electrically connected in parallel with the test switch 532. The drive switch 55 is turned on in response to a command signal from the processing section 6. When the drive switch 55 is turned on, a pseudo current leakage state occurs as well, similar to when the test switch 532 is turned on. The zero-phase current transformer 30 detects a pseudo current leakage state, and the opening/closing mechanism section 51 interrupts the electrical path in response. In the main breaker 3, the processing unit 6 transmits a command signal to the drive switch 55, so that an automatic test for leakage detection can be performed. In the present disclosure, an "automatic test" means a test that is performed on an electric circuit and the configuration around the electric circuit without any work by a person such as a worker. The "automatic test" may be started using a command signal transmitted from the external device 93 to the master breaker 3 in response to a human operation on the external device 93 as a trigger. In other words, in the "automatic test", the drive switch 55 is turned on in response to a command signal from outside the main breaker 3 (for example, a command signal transmitted from the external device 93 and input to the main breaker 3 via the communication section 7). It may also be done by Further, the "automatic test" may be started without human operation.

The drive switch 55 is, for example, a semiconductor switching element. The drive switch 55 is turned on and off in response to a drive signal as a command signal from the processing section 6.

When a predetermined inspection condition is satisfied, the processing unit 6 turns on the drive switch 55 to generate a pseudo current leakage state. The inspection condition is, for example, that a predetermined period of time has elapsed since the last time the drive switch 55 was turned on. In other words, the main breaker 3 periodically generates a pseudo current leakage state to perform an earth leakage detection test. In other words, the main breaker 3 periodically performs an automatic test for leakage detection.

In addition, when a current leakage state is detected, the opening/closing mechanism section 51 operates to interrupt the electrical circuit in principle, but if the processing section 6 turns on the drive switch 55 and a pseudo current leakage state occurs, It is not essential that the opening/closing mechanism section 51 performs an operation of cutting off the electric circuit. For example, when the processing section 6 turns on the drive switch 55 and a pseudo current leakage state occurs, instead of (or in addition to) the opening/closing mechanism section 51 performing an operation of cutting off the electrical circuit, the processing section 6 The presence or absence of electrical leakage may be detected based on the measured current of the zero-phase current transformer 30. In other words, the automatic earth leakage detection test may include, in addition to the earth leakage detection test in the zero-phase current transformer 30, an optional test of the circuit (main line) breaking operation performed in accordance with the earth leakage detection test result. good.

When the processing unit 6 turns on the drive switch 55 and a pseudo current leakage state occurs, specific control for preventing the opening/closing mechanism unit 51 from performing an operation to interrupt the electrical circuit includes, for example, the following: It is possible to control the following. That is, when the processing unit 6 turns on the drive switch 55 and a pseudo current leakage state occurs, the signal from the zero-phase current transformer 30 (information on the measured current) is prevented from being transmitted to the electromagnetic release device 52. , the switch between the zero-phase current transformer 30 and the electromagnetic release device 52 is opened. Otherwise, short-circuit the switch.

The predetermined period is, for example, one month, several months, one year, or several years. In Japan, the Electricity Business Act stipulates that maintenance and inspection of customer equipment be performed at least once every four years. In order to satisfy the provisions of the Electricity Business Law, the predetermined period is set to, for example, four years or less.

In this way, the main breaker 3 performs the earth leakage detection test (automatic test) even without a command from outside the main breaker 3 . The communication unit 7 outputs inspection information acquired by the automatic test. In this way, the inspection information output from the communication unit 7 includes information regarding the results of the automatic test for earth leakage detection. Furthermore, the communication unit 7 periodically outputs the detection results of the zero-phase current transformer 30 when an automatic test is not performed. More specifically, the communication unit 7 transmits, for example, information regarding the amount of current leakage every predetermined period (for example, one hour, several hours, or one day), or when the amount of current leakage equal to or greater than the predetermined amount is zero phase during the predetermined period. Information on whether or not the current transformer 30 has detected it is output.

In this way, the communication unit 7 has a function of actively outputting inspection information. The communication unit 7 also has a function of periodically outputting inspection information. Here, "actively output" means to output without depending on a command from the outside of the main breaker 3.

The main breaker 3 includes an opening/closing mechanism section 51, an electromagnetic release device 52, and two tripping devices 56.

When the contact C1 is closed, the opening/closing mechanism section 51 is latched in a state in which energy (potential energy due to the elastic force of the spring) is accumulated in the direction of opening the contact C1. When either of the two tripping devices 56 or the electromagnetic release device 52 is driven, the latch of the opening/closing mechanism section 51 is released. When the latch is released, the opening/closing mechanism 51 releases the accumulated energy and rapidly opens the contact C1.

When an abnormal current (overcurrent) such as a short-circuit current flows through the main line, the two tripping devices 56 open the contact C1 via the opening/closing mechanism section 51.

The electromagnetic release device 52 includes an electromagnetic device including a coil and a plunger. The electromagnetic release device 52 releases the coil when the main line is in an earth leakage state (including a pseudo earth leakage state) (when an unbalance occurs in the current passing through the primary winding of the zero-phase current transformer 30). By applying an excitation current, the plunger is moved and the latch of the opening/closing mechanism section 51 is released. As a result, the opening/closing mechanism section 51 opens the contact C1.

Further, the operating lever 33 (see FIG. 3) opens and closes the contact C1 via the opening/closing mechanism section 51 in response to a mechanical operation.

The determining unit 61 of the processing unit 6 determines whether or not there is an abnormality in the customer equipment E1 based on the inspection information. The determination unit 61 determines whether or not there is an abnormality in the consumer equipment E1, for example, by comparing the value included in the inspection information with a threshold value. The threshold value is recorded in the memory of the computer system that constitutes the processing unit 6. For example, when the amount of current leakage detected by the zero-phase current transformer 30 is equal to or greater than the current leakage amount threshold, the determination unit 61 determines that an abnormality called a current leakage has occurred in the main line. Further, the determining unit 61 determines that a high temperature abnormality has occurred at the installation position of the temperature sensor 45, for example, when the temperature detected by the temperature sensor 45 is equal to or higher than the temperature threshold value. Further, the determination unit 61 determines that, for example, the amount of current leakage detected by the zero-phase current transformer 30 is less than the amount of current leakage threshold, and the integrated value of the amount of current leakage detected by the zero-phase current transformer 30 for a predetermined period is a predetermined value. If the value is greater than the value, it is determined that an abnormality called electrical leakage (particularly minute electrical leakage) has occurred in the main line. Further, the determining unit 61 acquires the current waveform of the current measured by the master current sensor CT1 and the plurality of current sensors CT2, and if the current waveform includes a predetermined arc, the determining unit 61 determines that the wiring is abnormal (short circuit or It is determined that a problem (half-disconnection, etc.) has occurred. Further, the determining unit 61 determines whether there is an abnormality such as a power outage, for example, based on the measured value of the main voltage detected by the voltage sensor.

Furthermore, determining whether there is an abnormality in the customer equipment E1 includes determining whether there is an abnormality in the system power supply PS1 that affects the abnormality in the customer equipment E1. The determination unit 61 may determine whether there is an abnormality in the system power supply PS1, for example, by acquiring inspection information regarding an abnormality such as a power outage in the system power supply PS1 from a device that monitors the system power supply PS1.

The communication unit 7 outputs the determination result of the determination unit 61 as part of the inspection information. That is, the communication unit 7 outputs inspection information including the determination result of the determination unit 61 to the external device 93 via the repeater 91. Furthermore, the processing section 6 records the judgment results of the judgment section 61 one by one. The communication unit 7 outputs the determination result recorded in the processing unit 6.

In addition to information regarding the amount of leakage detected by the zero-phase current transformer 30, the inspection information includes in-panel information that is information detected inside the cabinet 10 of the distribution board 1, and cabinet 10 of the distribution board 1. This includes off-board information, which is information detected outside the board. Examples of in-panel information include information regarding the temperature detected by the temperature sensor 45 placed near the main breaker 3 or branch breaker 2, operation information of the lightning arrester 43, and information measured by the main current sensor CT1 and the plurality of current sensors CT2. The information includes information regarding the current generated, information regarding the amount of electric power determined by the measurement unit 41, and the like. An example of off-panel information is information regarding the temperature detected by the temperature sensor 45 disposed inside the outlet 82.

According to the current leakage amount detection system X1 of the present embodiment described above, a business operator that performs maintenance and inspection can obtain inspection information output from the communication unit 7 so that a worker can measure information similar to the inspection information. In comparison with the case where the information is acquired by visual inspection or the like, it is possible to reduce the effort required to inspect the customer equipment E1. Furthermore, since there is no need for the worker to go to the installation location of the distribution board 1 in order to obtain inspection information, it is possible to reduce the effort required to inspect the customer equipment E1. In addition, a business that performs maintenance and inspection can obtain inspection information with high accuracy regardless of the proficiency level of inspection work of each worker.

Furthermore, although the distribution board 1, the outlet 82, etc. may be installed inside the home, even if the resident is absent and workers cannot enter the home, the business operator conducting maintenance and inspection shall Inspection information can be acquired from the communication section 7. Therefore, the possibility that the inspection work of the customer equipment E1 can be executed increases.

(Modification 1)
Hereinafter, the leakage amount detection system X1 according to Modification 1 will be described using FIG. 1. Components similar to those in the embodiment will be given the same reference numerals and descriptions will be omitted.

In the embodiment, the inspection information output from the communication unit 7 includes information regarding the temperature of the configuration of the consumer equipment E1 and the result of an automatic test for leakage detection in the zero-phase current transformer 30. In this modification example 1, the inspection information output from the communication unit 7 includes loosening of the screw terminal of the customer equipment E1, discoloration of a specific part of the customer equipment E1, and a specific space of the customer equipment E1 (customer equipment It further includes information regarding the odor in a specific space within the premises of E1. That is, the inspection information outputted from the communication unit 7 includes the temperature of the configuration of the customer equipment E1, the result of the automatic test for leakage detection in the zero-phase current transformer 30, the loosening of the screw terminal of the customer equipment E1, the customer equipment The information may include information regarding at least one of discoloration of a specific part of E1 and odor in a specific space of consumer equipment E1. This will be explained in more detail below.

A screw terminal 124 (see FIG. 3) is used as each of the three connection terminals to which the drop-in wire 200 is directly connected. In addition to this, the screw terminals include, for example, the power terminal 441 (primary side terminal or secondary side terminal) of the interconnection breaker 44 (see FIG. 3), the primary side terminal 31 of the main breaker 3, the secondary side terminal 32, It can be used as a primary side terminal and a secondary side terminal of the branch breaker 2.

The inspection information output from the communication unit 7 includes information regarding loosening of the screw terminal of the customer equipment E1. Furthermore, the processing unit 6 records information regarding loosening of the screw terminals of the consumer equipment E1 one by one. The communication unit 7 outputs the information recorded in the processing unit 6.

The presence or absence of looseness of the screw terminal is detected, for example, by measuring the electrical resistance value between two electrical circuits connected via the screw terminal. The electrical resistance value is determined based on the measured values of the current flowing between the two electrical circuits and the voltage applied between the two electrical circuits. If the screw terminal is loose, the electrical resistance value will be higher than if the screw terminal is tightly tightened.

If the measured electrical resistance value is larger than a predetermined value, the determining unit 61 of the processing unit 6 determines that an abnormality such as loosening of the screw terminal has occurred in the consumer equipment E1.

In addition, the inspection information output from the communication unit 7 includes information regarding discoloration of a specific portion of the customer equipment E1 and information regarding a smell in a specific space of the customer equipment E1. Furthermore, the processing unit 6 records information regarding discoloration of a specific part of the customer equipment E1 and information regarding the odor in a specific space of the customer equipment E1. The communication unit 7 outputs the information recorded in the processing unit 6.

The specific part whose presence or absence of discoloration is detected is, for example, a connection part between electric circuits, a resin molded product covering this connection part, or the like. The specific space where the odor is detected is, for example, a space where a connection site between electric circuits is arranged. Connection parts between electric circuits and resin molded products that cover these connection parts may discolor or emit odors due to temperature rises caused by poor contact between the electric circuits. Connection parts between electric circuits are, for example, terminals (for example, screw terminals 124, primary terminals 31 and secondary terminals 32 of main breaker 3, primary terminals and secondary terminals of branch breaker 2, etc.) and This is the blade holder of the outlet 82, etc.

The presence or absence of discoloration is confirmed by, for example, a camera installed in advance. The processing unit 6 determines whether or not the object photographed by the camera has changed color compared to the normal state by, for example, performing image processing on the image photographed by the camera. The communication unit 7 outputs the determination result of the presence or absence of discoloration as part of the inspection information.

Alternatively, the communication unit 7 may output an image taken by a camera as part of the inspection information. The presence or absence of discoloration may be determined by the external device 93 that receives the inspection information analyzing images taken with a camera, or the presence or absence of discoloration may be determined by a person visually checking the image displayed on the display of the external device 93. The presence/absence of the information may be determined.

Odor detection is performed, for example, by a scent sensor. Odor detection by an odor sensor is performed, for example, by detecting a substance contained in the odor. The communication unit 7 outputs the detection results of the odor sensor as part of the inspection information.

When a discoloration of a specific portion of the consumer equipment E1 is detected, the determining unit 61 of the processing unit 6 determines that an abnormality such as a temperature rise has occurred in the consumer equipment E1. When a specific odor is detected by the odor sensor, the determination unit 61 determines that an abnormality such as a temperature rise has occurred in the consumer equipment E1.

The inspection information can be transmitted from the components for detecting the inspection information (camera, odor sensor, etc.) to the communication unit 7 via, for example, wireless communication, power line carrier communication, or a communication line provided separately from the power line. This is done through wired communication.

(Modification 2)
Hereinafter, the leakage amount detection system X1 according to Modification 2 will be explained. Components similar to those in the embodiment will be given the same reference numerals and descriptions will be omitted.

In the embodiment, the determination unit 61 is included in the processing unit 6 of the main breaker 3. On the other hand, the determination unit 61 of the present modification 2 is arranged outside the cabinet 10 of the distribution board 1. The determination unit 61 is included in, for example, the repeater 91 or the external device 93. That is, the determination unit 61 included in the repeater 91 or the external device 93 determines whether or not there is an abnormality in the customer equipment E1 based on the inspection information output from the communication unit 7.

(Modification 3)
Hereinafter, the leakage amount detection system X1 according to Modification 3 will be explained. Components similar to those in the embodiment will be given the same reference numerals and descriptions will be omitted.

The current leakage detection system X1 of the third modification further includes a repeater 91 in addition to the configuration of the current leakage detection system X1 of the embodiment. The function of the repeater 91 is similar to that in the embodiment. That is, the relay 91 relays communication between the communication unit 7 of the main breaker 3 and the external device 93. The relay 91 only needs to have at least a function of relaying communication of inspection information from the communication unit 7 to the external device 93.

The repeater 91 is built in, for example, the casing of the main breaker 3. However, the repeater 91 may be attached to the main breaker 3 casing from the outside of the main breaker 3 casing. Further, the repeater 91 may be provided separately from the main breaker 3. For example, the repeater 91 may be placed outside the main breaker 3 and inside the cabinet 10 of the distribution board 1.

(Other variations of the embodiment)
Other modifications of the embodiment will be listed below. The following modified examples may be realized in combination as appropriate. Further, the following modified examples may be realized by appropriately combining with each of the above-mentioned modified examples.

The same function as the electric leakage amount detection system X1 may be realized by the electric leakage amount detection method. As shown in FIG. 4, the leakage amount detection method according to one embodiment includes a detection step ST1 and a notification step ST3. In the detection step ST1, the amount of electrical leakage is detected between the branch breaker 2 and the responsibility demarcation point 102 of the consumer equipment E1 where the branch breaker 2 is installed. In the notification step ST3, inspection information including information regarding the amount of leakage detected in the detection step ST1 is output.

More specifically, the electric leakage amount detection method further includes a determination step ST2, for example, as shown in FIG. After the detection step ST1, in a determination step ST2, the determination unit 61 determines whether the current date and time match a preset date and time. When the determination unit 61 determines that the current date and time match the set date and time (determination step ST2: YES), the communication unit 7 outputs inspection information including information regarding the amount of leakage detected in the detection step ST1 (notification step ST3). ).

Note that the communication unit 7 may have a function of outputting inspection information irregularly. For example, the communication unit 7 may output the inspection information only when a predetermined condition that may be met irregularly is met. The predetermined condition is, for example, that the determination unit 61 determines that there is an abnormality in the customer equipment E1 based on the inspection information.

Furthermore, the communication unit 7 may have a function of periodically outputting inspection information and a function of outputting inspection information when the above-described predetermined conditions are met. That is, the communication unit 7 may have a function of periodically outputting inspection information and a function of irregularly outputting the inspection information.

Further, conditions for outputting from the communication unit 7 may be determined for each piece of information included in the inspection information. For example, the communication unit 7 may output information regarding the amount of leakage detected by the zero-phase current transformer 30 every year, and may output the temperature measured by the temperature sensor 45 every month.

Furthermore, the communication unit 7 may output the inspection information in real time. That is, the communication unit 7 may output the inspection information every time a relatively short period (for example, 1 second, 10 seconds, or 1 minute) passes.

A plurality of repeaters 91 may be provided. That is, communication between the communication unit 7 and the external device 93 may be relayed by a plurality of repeaters 91. For example, a first repeater and a second repeater are provided, the first repeater relays communication between the communication unit 7 and the second repeater, and the second repeater relays communication between the communication unit 7 and the second repeater. The communication between the repeater and the external device 93 may be relayed.

The communication unit 7 may communicate with the external device 93 without using the repeater 91.

The repeater 91 acquires information from at least a part of the configuration of the consumer equipment E1 (temperature sensor 45, lightning arrester 43, etc.) without going through the communication unit 7, and outputs it to the external device 93 or the communication unit 7. Good too. The inspection information is transmitted from each component of the consumer equipment E1 to the repeater 91 by, for example, wireless communication, power line carrier communication, or wired communication via a communication line provided separately from the power line.

The main breaker 3 may have a function of automatically returning after performing an operation of cutting off the electric circuit in an automatic test for leakage detection. Automatic recovery means to automatically energize (turn on) the main breaker 3 after the main breaker 3 has been cut off. For example, the main breaker 3 may enable an automatic return function when a signal that triggers an automatic test is input, and disable the automatic return function in other cases.

The operation of cutting off the electric circuit in the automatic test for earth leakage detection is not limited to being performed by the main breaker 3. In other words, the action of breaking the electrical circuit may be the action of breaking the main line (the drop-in line 200, the connecting line 201, or the conductive bar 202), or the action of breaking the branch circuit (circuit 8) in which the branch breaker 2 is installed. It may be.

The drive switch 55 is not limited to a semiconductor switching element. The drive switch 55 may be a mechanical switching element. Furthermore, the drive switch 55 may be turned on or off by operating an actuator provided in the main breaker 3 in accordance with a command signal from the processing unit 6.

The leakage amount detection system X1 is provided in the branch breaker 2, and may detect the amount of leakage in the branch circuit (circuit 8) using the zero-phase current transformer 30 (leakage amount detection section). Further, as the branch breaker 2, an earth leakage breaker equipped with an earth leakage amount detection system X1 may be employed.

The communication unit 7 may output inspection information in response to a command signal from outside the master breaker 3 (for example, a command signal transmitted from the external device 93 and input to the master breaker 3 via the communication unit 7). .

In addition to the inspection information, the communication unit 7 may output information regarding at least one of the measured value of the water meter and the measured value of the gas meter.

The determination unit 61 of the embodiment determines that an abnormality called a leakage occurs in the main line, for example, when the amount of leakage detected by the zero-phase current transformer 30 is equal to or greater than the leakage amount threshold. Here, the electric leakage amount detection system X1 may include a setting unit for setting the electric leakage amount threshold value. For example, when the command signal transmitted from the external device 93 includes information specifying the electric leakage amount threshold, the setting unit changes the electric leakage amount threshold from the current electric leakage amount threshold to the electric leakage amount specified by the command signal. Update to the amount threshold.

The external device 93 may be a mobile terminal such as a smartphone or a tablet terminal.

The external device 93 may notify the user of information regarding the inspection information received from the communication unit 7. For example, the external device 93 may notify a resident (user) of the residence where the distribution board 1 is installed of information regarding the inspection information received from the communication unit 7 by image or voice. This allows the resident to know, for example, whether there is a current leakage in his or her home. Further, the communication unit 7 or the repeater 91 may notify the user of information regarding inspection information.

(summary)
The following aspects are disclosed from the embodiments described above.

The current leakage detection system (X1) according to the first aspect includes a current leakage detection unit (zero-phase current transformer (30)) and a communication unit (7). The electric leakage amount detection unit detects the electric leakage amount between the branch breaker (2) and the responsibility demarcation point (102). More specifically, the responsibility demarcation point (102) is the responsibility demarcation point (102) of the consumer equipment (E1) where the branch breaker (2) is installed. The communication section (7) outputs inspection information. The inspection information includes information regarding the amount of electrical leakage detected by the electrical leakage amount detection section.

According to the above configuration, it is possible to reduce the effort required to inspect the customer equipment (E1).

Furthermore, in the current leakage detection system (X1) according to the second aspect, in the first aspect, the current leakage detection unit (zero-phase current transformer (30)) is connected to the cabinet (10) of the distribution board (1). is placed inside.

According to the above configuration, it is possible to easily secure an installation space for the leakage amount detection section (zero-phase current transformer (30)).

Furthermore, in the earth leakage amount detection system (X1) according to the third aspect, in the first or second aspect, the earth leakage amount detection section (zero-phase current transformer (30)) is connected to the earth leakage breaker (main breaker (3)). be prepared for.

According to the above configuration, the electric leakage amount detection system (X1) can be easily installed compared to the case where the electric leakage amount detection system (X1) is provided separately from the earth leakage breaker.

Furthermore, in the current leakage detection system (X1) according to the fourth aspect, in any one of the first to third aspects, the inspection information is detected by the current leakage detection unit (zero-phase current transformer (30)). Contains information on the integrated value of the amount of leakage that has occurred.

According to the above configuration, the communication section (7) can output more information as inspection information.

Further, the leakage amount detection system (X1) according to the fifth aspect further includes a determination unit (61) in any one of the first to fourth aspects. The determining unit (61) determines whether or not there is an abnormality in the consumer equipment (E1) based on the inspection information.

According to the above configuration, the leakage amount detection system (X1) and the system using the same can perform operations depending on whether or not there is an abnormality in the consumer equipment (E1).

Furthermore, in the leakage amount detection system (X1) according to the sixth aspect, in the fifth aspect, the determination unit (61) is arranged outside the cabinet (10) of the distribution board (1).

According to the above configuration, there is no need to provide a space for installing the determination unit (61) inside the cabinet (10), so compared to the case where the determination unit (61) is installed inside the cabinet (10). , the configuration inside the cabinet (10) can be arranged with plenty of room.

Furthermore, the leakage amount detection system (X1) according to the seventh aspect further includes a repeater (91) in any one of the first to sixth aspects. The repeater (91) relays communication of inspection information from the communication unit (7) to the external device (93).

According to the above configuration, communication can be stabilized compared to a case where there is no repeater (91).

Further, in the leakage amount detection system (X1) according to the eighth aspect, in any one of the first to seventh aspects, the communication unit (7) has a function of actively outputting inspection information.

According to the above configuration, the communication amount of the communication unit (7) can be reduced compared to the case where the communication unit (7) requires a command signal or the like from the outside in order to output inspection information.

Furthermore, in the current leakage detection system (X1) according to the ninth aspect, in any one of the first to eighth aspects, the inspection information is detected by the current leakage detection unit (zero-phase current transformer (30)). In addition to information on the amount of leakage caused by leakage, it also includes information inside the panel. The in-panel information is information detected inside the cabinet (10) of the distribution board (1).

According to the above configuration, the communication section (7) can output more information as inspection information.

Furthermore, in the current leakage detection system (X1) according to the tenth aspect, in any one of the first to ninth aspects, the inspection information is detected by the current leakage detection unit (zero-phase current transformer (30)). In addition to information on the amount of leakage that occurred, it also includes off-panel information. The off-panel information is information detected outside the cabinet (10) of the distribution board (1).

According to the above configuration, the communication section (7) can output more information as inspection information.

Further, in the electric leakage amount detection system (X1) according to the eleventh aspect, in any one of the first to tenth aspects, the inspection information includes the temperature of the configuration of the consumer equipment (E1), the electric leakage amount detection unit ( As a result of the automatic test for leakage detection in the zero-phase current transformer (30)), the screw terminal (124) of the consumer equipment (E1) was found to be loose, discoloration of a specific part of the consumer equipment (E1), and the customer equipment was found to be loose. (E1) includes information regarding at least one odor in the specific space.

According to the above configuration, the communication section (7) can output more information as inspection information.

The configurations other than the first aspect are not essential to the leakage amount detection system (X1) and can be omitted as appropriate.

Further, the automatic maintenance inspection system (repeater (91), external device (93)) according to the twelfth aspect is a communication unit of the leakage amount detection system (X1) according to any one of the first to eleventh aspects. (7) Receive inspection information from.

According to the above configuration, it is possible to reduce the effort required to inspect the customer equipment (E1).

Further, the leakage amount detection method according to the thirteenth aspect includes a detection step (ST1) and a notification step (ST3). In the detection step (ST1), the amount of electrical leakage is detected between the branch breaker (2) and the responsibility demarcation point (102). More specifically, the responsibility demarcation point (102) is the responsibility demarcation point (102) of the consumer equipment (E1) where the branch breaker (2) is installed. In the notification step (ST3), inspection information is output. The inspection information includes information regarding the amount of electrical leakage detected in the detection step (ST1).

According to the above configuration, it is possible to reduce the effort required to inspect the customer equipment (E1).

Not limited to the above aspects, various configurations (including modified examples) of the leakage amount detection system (X1) according to the embodiment can be realized by the electric leakage amount detection method.

1 Distribution board 10 Cabinet 2 Branch breaker 3 Main breaker (earth leakage breaker)
30 Zero-phase current transformer (earth leakage detection section)
61 Judgment unit 7 Communication unit 91 Repeater (automatic maintenance inspection system)
93 External device (automatic maintenance inspection system)
102 Responsibility demarcation point 124 Screw terminal E1 Consumer equipment ST1 Detection step ST3 Notification step X1 Leakage amount detection system

Claims (15)

Equipped with a breaker installed in customer equipment,
The breaker is
a current leakage amount detection unit that detects a current leakage amount in the breaker ;
a determination unit that generates abnormality determination information regarding the presence or absence of an abnormality in the consumer equipment based on the amount of electrical leakage detected by the amount of electrical leakage detection unit;
a communication unit that outputs inspection information including information regarding the amount of electrical leakage detected by the electrical leakage amount detection unit and the abnormality determination information generated by the determination unit ;
Electrical leakage detection system. Equipped with a breaker installed in customer equipment,
The breaker is
a current leakage amount detection unit that detects a current leakage amount in the breaker;
a calculation unit that calculates an integrated value of the electrical leakage amount detected by the electrical leakage amount detection unit and generates information regarding the integrated value;
a communication unit that outputs inspection information including information regarding the amount of electric leakage detected by the amount of electric leakage detected by the amount of electric leakage detection unit and information regarding the integrated value generated by the calculation unit;
Electrical leakage detection system. The electric leakage amount detection unit is arranged inside a cabinet of a distribution board,
The leakage amount detection system according to claim 1 or 2. The earth leakage amount detection unit is provided in an earth leakage breaker as the breaker,
The leakage amount detection system according to any one of claims 1 to 3. The inspection information includes information regarding the integrated value of the amount of electric leakage detected by the amount of electric leakage detection unit,
The leakage amount detection system according to claim 1. further comprising a determination unit that determines whether or not there is an abnormality in the consumer equipment based on the inspection information;
The leakage amount detection system according to claim 2. The determination unit is arranged outside a cabinet of a distribution board,
The electric leakage amount detection system according to claim 6. further comprising a relay that relays communication of the inspection information from the communication unit to an external device;
The leakage amount detection system according to any one of claims 1 to 7. The communication unit has a function of actively outputting the inspection information,
The leakage amount detection system according to any one of claims 1 to 8. The inspection information includes in-panel information that is information detected inside a cabinet of a distribution board, in addition to information regarding the amount of leakage detected by the amount of earth leakage detection unit.
The leakage amount detection system according to any one of claims 1 to 9. The inspection information includes, in addition to information regarding the amount of current leakage detected by the amount of current leakage detection unit, external information that is information detected outside the cabinet of the distribution board.
The leakage amount detection system according to any one of claims 1 to 10. The inspection information includes the temperature of the configuration of the customer equipment, the result of an automatic test for leakage detection in the leakage amount detection unit, loosening of screw terminals of the customer equipment, discoloration of a specific part of the customer equipment, and including information regarding at least one of the odors in the specific space of the consumer equipment;
The leakage amount detection system according to any one of claims 1 to 11. receiving the inspection information from the communication unit of the leakage amount detection system according to any one of claims 1 to 12;
Automatic maintenance inspection system. In the breaker installed in customer equipment,
a detection step of detecting the amount of leakage in the breaker;
a determination step of generating abnormality determination information regarding the presence or absence of an abnormality in the consumer equipment based on the amount of leakage detected in the detection step;
executing a notification step of outputting inspection information including information regarding the amount of electrical leakage detected in the detection step and the abnormality determination information generated in the determination step;
Electrical leakage detection method. In the breaker installed in customer equipment,
a detection step of detecting the amount of leakage in the breaker;
a calculating step of calculating an integrated value of the amount of electrical leakage detected in the detecting step and generating information regarding the integrated value;
executing a notification step of outputting inspection information including information regarding the amount of leakage detected in the detection step and information regarding the integrated value generated in the calculation step;
Electrical leakage detection method.

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