Detection method for an electrical installation, detection device and associated electrical installation

Abstract

Detection method for an electrical installation, detection device and associated electrical installation. This detection method is implemented for an electrical installation (10) comprising a support (22) on which at least one circuit breaker (20) and a vibration sensor (30) are mounted. When the circuit breaker (20) trips, at least one characteristic quantity of the vibrations generated by the circuit breaker (20) is measured. The vibration measurements are received by a control unit (40) and then compared to at least one predefined detection criterion, each detection criterion being previously stored in a memory of the control unit (40). As a result of the comparison, the tripping of the circuit breaker (20) is detected. Figure for the abbreviation: Figure 1

Description

Title of the invention: Detection method for an electrical installation, detection device and associated electrical installation

[0001] The present invention relates to a detection method for an electrical installation, as well as a detection device configured to implement such a detection method, and to an electrical installation comprising such a detection device.

[0002] We are interested here in electrical installations comprising at least one support, such as a rail or a plate, configured to receive one or more circuit breakers mounted on the support. When an electrical fault occurs, causing a circuit breaker to trip, it is advantageous to send an alert signal, for example to a person in charge of maintenance.

[0003] It is known to integrate a current sensor into each circuit breaker; however, such sensors significantly increase the cost of the circuit breakers, which is undesirable. It is also known to equip the existing electrical installation with current sensors; however, installing each current sensor is cumbersome, and the sensors and associated connecting cables also occupy significant space within the electrical installation.

[0004] It is these problems that the invention intends to remedy more particularly, by proposing a detection method for an electrical installation that is easy to implement.

[0005] To this end, the invention relates to a detection method for an electrical installation, in which: - The electrical installation includes: • a support suitable for mounting at least one circuit breaker, • a circuit breaker, which is mounted on the bracket, • a vibration sensor, which is mounted on the support and is capable of measuring at least one characteristic quantity of the vibrations generated by the circuit breaker when the circuit breaker trips, and • a control unit, which is configured to receive measurements from the vibration sensor, - The detection process includes: • when the circuit breaker trips, the measurement of at least one characteristic quantity of the vibrations generated by the circuit breaker, using the vibration sensor, • the reception of measurements from the vibration sensor by the control unit, • comparison of vibration measurements to at least one predefined detection criterion, each detection criterion being previously recorded in a memory of the control unit, • as a result of the comparison, the detection of a circuit breaker trip.

[0006] Thanks to the invention, the vibration sensor is attached to a support and allows the tripping of each circuit breaker mounted on this support to be detected, without a direct connection between the vibration sensor and each circuit breaker. Installation of the vibration sensor is quick and easy. Furthermore, the vibration sensor is small, particularly relative to the circuit breakers. The vibration sensor is therefore compact when installed in the electrical system. Installation of the sensor is thus easy, and the detection method is easy to implement.

[0007] According to advantageous but not mandatory aspects of the invention, such a detection method may incorporate one or more of the following features taken individually or in any technically permissible combination: - The vibration sensor is configured to switch between a sleep state, in which the vibration sensor consumes no power, and an awake state, in which the vibration sensor measures at least one characteristic vibration quantity and transmits the measurements to the control unit, the vibration sensor being configured to: • to transition from sleep to wakefulness when the vibration sensor is subjected to vibrations where at least one characteristic value exceeds a predefined wakefulness threshold, and • to transition from a state of wakefulness to a state of sleep at the latest after a predetermined time interval,

[0008] whereas, when the circuit breaker is tripped, the measurement of at least one characteristic quantity is preceded by an initial step of waking up the vibration sensor, during which the vibration sensor, initially in the sleep state, goes into the wake-up state under the effect of the vibrations generated by the tripping of the circuit breaker, the measurement of at least one characteristic quantity then being carried out using the vibration sensor in the wake-up state. - Several detection criteria are pre-recorded in the control unit's memory, each detection criterion being uniquely associated with a type of circuit breaker and a type of electrical fault likely to cause the tripping of the circuit breaker of that type. whereas, during the comparison stage, measurements of at least one characteristic quantity are compared to the detection criteria associated with the type of circuit breaker considered, and that trip detection also includes identifying the type of electrical fault that caused the tripping of the circuit breaker in question. - Each detection criterion is uniquely associated with a type of circuit breaker, a type of support on which the circuit breaker is likely to be mounted, and a type of electrical fault likely to cause the tripping of the circuit breaker of the type considered. - For each type of circuit breaker, the types of electrical faults that can cause the circuit breaker to trip include overcurrents and short circuits.

[0009] The invention also relates to a detection device, which comprises: - a first vibration sensor, which is configured to be mounted on a circuit breaker support and which is suitable for measuring at least one characteristic quantity of the vibrations generated by the circuit breaker when the circuit breaker trips, - a control unit, which is configured to receive measurements from the vibration sensor,

[0010] in which the detection device is configured to implement the detection method as defined above.

[0011] This detection device induces the same advantages as those mentioned above concerning the detection method of the invention.

[0012] The invention also relates to an electrical installation, which includes: - a first support, suitable for mounting at least one circuit breaker, - a first circuit breaker, which is mounted on the first bracket, - the detection device as defined above,

[0013] wherein the first vibration sensor is mounted on the first support.

[0014] Advantageously: - Several circuit breakers are mounted on the first support, the first vibration sensor being designed to measure the accelerations generated by the tripping of any of the circuit breakers mounted on the first support. - The first support is chosen from a mounting rail or a mounting plate. - The electrical installation creates an enclosure, whereas the electrical installation includes, in addition to the first support, at least one additional support, the first support and each additional support being received within the enclosure, that the electrical installation includes, in addition to the first vibration sensor, at least one additional vibration sensor, each additional vibration sensor being mounted on its respective additional support, and that the control unit is configured to receive measurements from the first vibration sensor and each additional vibration sensor.

[0015] The invention will be better understood, and other advantages thereof will become more apparent in the light of the following description of an embodiment of a detection method, a detection device and an electrical installation, in accordance with its principle, given solely by way of example and with reference to the accompanying drawings, in which:

[0016] - [Fig. 1] [Fig. 1] is a schematic representation of an electrical installation in accordance with the invention;

[0017] - [Fig.2] [Fig.2] represents, on three inserts a), b) and c), a vibration sensor of the electrical installation of [Fig.1], shown in perspective from two different viewpoints, and a control unit of the electrical installation of [Fig.1], shown schematically;

[0018] - [Fig.3] [Fig.3] is an example of a measurement of the vibration sensor of the installation electric, and

[0019] - [Fig.4] [Fig.4] is a synoptic representation illustrating a process of detection implemented by the electrical installation of [Fig.l].

[0020] An electrical installation 10 according to an embodiment of the invention is shown in [Fig. 1]. The electrical installation 10, also referred to simply as "installation 10" in this description, is configured to connect an electrical power source to one or more electrical loads. The power source and the electrical loads are not shown.

[0021] The electrical installation 10 here includes a cabinet 12, which provides an enclosure 14 designed to house several electrical devices, in particular circuit breakers 20. The cabinet 12 includes several brackets 22, which are received in the enclosure 14 and on which the circuit breakers 20 are mounted. In particular, each bracket 22 is advantageously configured to accommodate several circuit breakers 20. A door is generally provided to close the enclosure 14. The door is not shown.

[0022] The brackets 22 advantageously include brackets of several types. The brackets 22 of a given type are advantageously configured so that one or more circuit breakers of a given type are mounted on them. In the illustrated example, the brackets The supports 22 include a first support 22A of a first type, which is here a mounting plate. In addition to the first support 22A, the supports 22 include a second support 22B of a second type, which is here a mounting rail with a Q-shaped (omega) profile, also known as a DIN rail. Other types of supports are of course possible, for example, a panel fixed opposite a back panel of the cabinet 12, etc.

[0023] The supports 20 are generally made of metal, in particular steel. The supports 20 are advantageously made of a ferromagnetic material, that is, a material capable of being attracted by a magnet. A magnet is a solid object made of a magnetic material.

[0024] In the example of [Fig. 1], only one first support 22A – here the mounting plate – is visible. This first support 22A receives two circuit breakers of a first type, referred to as "first 20A circuit breakers," while two second supports 22B – here two DIN rails – are visible. Each second support 22B receives several circuit breakers of a second type, referred to as "second 20B circuit breakers." The types of circuit breakers 20 depend, in particular, on the current rating of these circuit breakers. Generally, the principles of the invention are applicable regardless of the number and type of support, provided that the electrical installation 10 includes at least one support 22, and regardless of the number and type of the circuit breaker(s) 20 mounted on the support 22 in question.

[0025] Each circuit breaker 20 mounted on the associated support 22 is thus mechanically coupled to this support 20. When the circuit breaker 20 trips, the shock and vibrations generated by the breaking mechanism of the circuit breaker 20 are transmitted to the support 22 on which the circuit breaker 20 is mounted, the vibrations generated by the tripping of the circuit breaker 20 being thus measurable.

[0026] For at least one of the supports 20, the electrical installation 10 also includes a vibration sensor 30, which is mounted on the support in question and is designed to measure vibrations generated by the circuit breaker 20 when the circuit breaker 20 trips. Preferably, one vibration sensor 30 is mounted on each of the supports 22 on which one or more circuit breakers 20 are mounted. In the example of [Fig. 1], each of the supports 22 is equipped with a respective vibration sensor 30. The vibration sensors 30 are mounted on the same side of the support 22 as the circuit breakers 20 mounted on that support 22, i.e., on a front side of the support 22. In an alternative not shown, the vibration sensors 30 are mounted on a rear side of the support 22, such an arrangement being particularly advantageous when space is limited on the front side of the support 22.

[0027] The electrical installation 10 also includes a control unit 40, which is configured to receive measurements from each vibration sensor 30. The unit of Control unit 40 is located outside the cabinet 12. In the variant not shown, control unit 40 is located inside the cabinet 12.

[0028] One example of the vibration sensor 30 is described with reference to insets a) and b) of [Fig. 2]. What is valid for one vibration sensor 30 is applicable to other vibration sensors 30. The vibration sensor 30, also referred to simply as "sensor 30" in this description, comprises a housing 31 which contains the equipment necessary for the proper functioning of the vibration sensor 30.

[0029] In general, vibrations are mechanical waves, which pass through the support 22. Several methods of measuring vibrations are known, for example with contact by means of an accelerometer, in which case an acceleration is measured, or without contact by means of a laser, in which case a displacement is measured, which is then differentiable in velocity or acceleration, etc.

[0030] Thus, in general the vibration sensor 30 is specific to at least one characteristic quantity of the vibrations passing through the support 22 at the time of the tripping of the circuit breaker 20. The “characteristic quantities” of the vibrations include a displacement and / or a velocity and / or an acceleration.

[0031] In the context of the present invention, the vibration sensor 30 is preferably an acceleration sensor. In other words, the characteristic quantity measured by the vibration sensor 30 is an acceleration. The following description is given for the case where the vibration sensor 30 measures accelerations, the principles of the invention being of course applicable to the case where the vibration sensor measures another characteristic quantity of the vibrations generated during the tripping of the circuit breaker, for example a displacement or a velocity.

[0032] The vibration sensor 30 here includes an accelerometer 31A, which is configured to measure accelerations generated by vibrations of the support 22. The accelerometer 31A is, for example, based on a micro-electro-mechanical system, known by the English acronym MEMS. The vibration sensor 30 advantageously includes transmission means 31B, which are provided for transmitting the measurements from the accelerometer 31A to the control unit 40. The transmission means 31B are wireless transmission means, for example according to a so-called "Zigbee" protocol, as defined by the IEEE 802.15.4:2020 standard.

[0033] The vibration sensor 30 includes an electrical power source, for example a rechargeable battery 31C or a battery, the electrical power source being intended to power the accelerometer 31A and the transmission means 31B. Thus, the vibration sensor 30 is self-contained, in the sense that the vibration sensor 30 does not require running wires for its power supply or for transmitting measurements to the control unit 40. As described below, the electrical power source is intended so that the vibration sensor 30 can operate autonomously for several months, preferably for several years.

[0034] The vibration sensor 30 advantageously includes a magnet 32, which is intended for mounting the sensor 30 on the corresponding support 22. In the non-limiting example of [Fig. 2]#b), the magnet 32 ​​is ring-shaped and is located on an underside of the housing 31. Thus, the sensor 30 can be placed, depending on requirements or available space, on either the front or rear face of the support 22. The front face faces the user when the user is standing in front of the cabinet 12. In an alternative not shown, the vibration sensor 30 is attached to the corresponding support 22 by clipping or screwing.

[0035] The vibration sensor 30 advantageously includes a connector 34, which is provided for example for connection to a computer during a configuration step of the vibration sensor 30, for example to perform pairing of the vibration sensor 30 with the control unit 40. Alternatively or in addition, the connector 34 is used to recharge the accumulator 31C.

[0036] The control unit 40 is now described, with particular reference to [Fig. 2]#c).

[0037] The control unit 40 comprises a housing 41 which contains the equipment necessary for the proper functioning of the control unit 40. The control unit 40 advantageously comprises a processing unit 42, which includes a microprocessor 42A and a memory 42B. The control unit 40 includes receiving means 44, which are configured to cooperate with the transmission means 31B of the vibration sensor, so as to receive the measurements from the accelerometer 31A. Thus, the receiving means 44 are advantageously radio frequency receiving means, which preferably operate according to the Zigbee protocol. For example, the received measurements are transmitted to the processing unit 42, and in particular are recorded in the memory 42B.

[0038] The control unit 40 includes communication means 46, preferably radio frequency communication means, which are intended to send an alert signal to a user. In a first, non-limiting example, the communication means 46 are capable of being connected to the Internet, for example via the WiFi protocol, and thus allow the alert signal to be sent by email. In another example, the communication means 46 use a different protocol for sending the alert signal, for example via the Zigbee, Bluetooth, WAN, etc. protocol.

[0039] The receiving means 44 and the communication means 46 are here described functionally and represented separately, without prejudice that in reality, the receiving means 44 and the communication means 46 may structurally share one or more components, for example share the same antenna, etc.

[0040] As an alternative not shown, the control unit 40 includes visual warning means, such as LEDs or a screen, the visual warning means being visible outside the housing 41.

[0041] The control unit 40 advantageously includes fastening means 48, which are provided for attaching the control unit 40 to the cabinet 12. In the illustrated example, the fastening means 48 advantageously include a magnet, the control unit 40, which allows the user to attach the control unit 40 to the cabinet 12 by hand and without tools, in the position of their choice, particularly according to the space constraints of the installation 10, the available space in the enclosure 14, etc. In the illustrated example, the control unit 40 is attached to the outside of the cabinet 12. In an alternative not shown, the control unit 40 is attached to the inside of the cabinet 12, in the enclosure 14.

[0042] The control unit 40 is advantageously electrically self-sufficient, i.e., the control unit 40 includes a battery 50, which is configured to supply electrical power to the other components of the control unit 40, in particular the computing unit 42, the receiving means 44, the communication means 46, etc. In addition to or instead of the battery 50, the control unit 40 is powered by a power cable - not shown -.

[0043] It is understood that an existing electrical cabinet 10, comprising one or more circuit breakers 20 mounted on one or more supports 22, the cabinet 10 being initially without the control unit 40 and vibration sensor 30, can thus be equipped with one copy of the control unit 40 and one or more copies of the vibration sensor 30, so as to supervise the tripping of the circuit breaker(s) 20.

[0044] Advantageously, the control unit 40 is paired with each of the vibration sensors 40 located in the cabinet 12, the control unit 40 receiving only the measurements transmitted by the vibration sensors 30 located in the cabinet 12 in question, and not the measurements transmitted by any other sensors located in other cabinets. The control unit 40 and the associated vibration sensor(s) 30 together form a detection device 60.

[0045] The detection device 60, and by extension the cabinet 12 equipped with such a detection device, are thus configured for the implementation of an advantageous detection method, described below.

[0046] The detection method thus comprises: - a first step 101, during which, when the circuit breaker 20 is tripped, at least one characteristic quantity of the vibrations generated by the circuit breaker 20 is measured by means of the vibration sensor 30. In the illustrated example, an acceleration is therefore measured. - a second step 102, subsequent to the first measurement step 101, during which the measurements from the vibration sensor 30 are received by the electronic control unit 40. The transmission of the measurements from the vibration sensor 30 is done here by cooperation of the transmission means 31B of the vibration sensor 30 with the reception means 44 of the control unit 40. - a third step 103, subsequent to the second measurement step 102, during which the vibration measurements are compared to at least one predefined detection criterion, each detection criterion being previously recorded in the memory 42B of the control unit 40, - a fourth step 104, subsequent to the third comparison step 103, during which a tripping of the circuit breaker 20 is detected as a result of the third comparison step 103.

[0047] The third comparison step 103 and the fourth detection step 104 are carried out here by the microprocessor 42A.

[0048] Advantageously, the detection method includes a fifth step 105, subsequent to the fourth detection step 104, during which an alert signal is transmitted to a user using communication means 46. Advantageously, the alert signal includes information relating to the cabinet 10 in which the tripped circuit breaker 20 is located. Advantageously, the alert signal includes information relating to the vibration sensor 30 that measured the accelerations generated by the tripped circuit breaker 20. In other words, the alert signal includes information relating to the bracket 22 on which the tripped circuit breaker 20 is mounted. The user can thus quickly locate the tripped circuit breaker 20 and take appropriate action, including checking the electrical load connected to this circuit breaker 20, resetting the circuit breaker 20, etc.

[0049] An example of an acceleration signal measurement is illustrated in [Fig. 3]. The measurement is made for a given type of circuit breaker 20, the circuit breaker 20 being mounted on a given type of support 22, and for a given type of electrical fault. The x-axis represents time "T" in milliseconds (ms), while the y-axis represents acceleration "a" given in "g", 1 g being equal to the acceleration due to gravity at the Earth's surface, approximately 9.80 m / s².

[0050] In the absence of a trip, the acceleration measured by the vibration sensor 30 remains relatively low. Vibration peaks may occur, for example a slamming of the cabinet door 12 or an impact on the cabinet 12, but these peaks remain well below the vibrations observed in the event of a circuit breaker 20 tripping and measured at the supports 22 by the vibration sensors. 30. Advantageously, the vibration sensor 30 is configured to switch between a sleep state, in which the vibration sensor 30 consumes minimal or no energy, and an awake state, in which the vibration sensor 30 measures accelerations and transmits the measurements to the control unit 40. The vibration sensor 30 is configured to switch from the sleep state to the awake state when the vibration sensor 30 undergoes a vibration of which at least one characteristic quantity - here an acceleration - is greater than a predefined SI wake-up threshold, and to switch from the awake state to the sleep state at the latest after a predetermined ATI time interval.

[0051] Thus, in the sleep state, the accumulator 31C discharges very slowly. Preferably, the accumulator 31C stores enough energy so that the vibration sensor 30 can remain in sleep mode for several years, for example, five years. According to some examples, in the sleep state, the transmission means 31B are not supplied with electrical energy.

[0052] When the circuit breaker 20 trips, the first step 101 of measuring the characteristic quantity – here, acceleration – is preceded by an initial step 100 of waking the vibration sensor 30, during which the vibration sensor 30, initially in a dormant state, transitions to an awake state under the effect of the vibrations generated by the tripping of the circuit breaker. The measurement of the characteristic quantity – here, acceleration – is then carried out, during the first measurement step 101, using the vibration sensor 30 in its awake state.

[0053] The wake-up threshold SI is chosen based, in particular, on the type of circuit breaker 20 and the type of support 22 on which the circuit breaker 20 is mounted. In the example of [Fig. 3], the wake-up threshold SI is equal to 25 g. The vibration sensor 30 is configured to wake up as quickly as possible, typically within a few milliseconds, for example, 2 ms. The time interval ATI during which the vibration sensor 30 remains awake, i.e., measures characteristic quantities—here, accelerations—and transmits this measurement to the control unit, is chosen to be sufficiently long so that the vibrations generated by the tripping of the circuit breaker 30 are sufficiently damped and are lower than the first wake-up threshold SI at the end of the time interval ATI. Preferably, the time interval ATI is greater than 50 ms, typically on the order of 200 ms.

[0054] As is known, circuit breakers 20 are designed to protect installations or users against several types of electrical faults. These various types of electrical faults include, in particular, overcurrents, short circuits, differential faults, etc. It has been observed that, depending on the type of electrical fault that caused the tripping of the circuit breaker 20, certain characteristics of the signal measured by the vibration sensor 30 change. In other words, in addition to the trip detection, by analyzing the signal measured by the vibration sensor 30, it is possible to identify the type of electrical fault that caused the tripping of the circuit breaker 20.

[0055] Advantageously, several detection criteria are pre-recorded in the memory 42B of the control unit 40, each detection criterion being uniquely associated with a type of circuit breaker and a type of electrical fault likely to cause the tripping of the circuit breaker of the type in question. Preferably, each detection criterion is uniquely associated with a type of circuit breaker 20, a type of support 22 on which the circuit breaker 20 is likely to be mounted, and a type of electrical fault likely to cause the tripping of the circuit breaker 20 of the type in question.

[0056] Advantageously, when installing the vibration sensor(s) 30 in an existing cabinet 10, the information relating to the type of support 22 and the type of circuit breakers 20 mounted on this support 22 is specified in the control unit 40, for example by the installer. The associated detection criteria are previously stored in the memory 42B of the control unit 40. Thus, when the control unit 40 receives the measurement signal of the characteristic quantity from the vibration sensor 30 in question, the relevant detection criteria are available, and the control unit 40 performs the third comparison step 103 only on the basis of the detection criteria corresponding to the type of support 22 and the type of circuit breaker 20 in question.

[0057] Following the third comparison step 103, the control unit 40 identifies, during the fourth detection step 104, the type of electrical fault that caused the tripping of the circuit breaker 30.

[0058] For each type of circuit breaker, the detection criteria stored in memory 42B associated with electrical faults likely to cause the circuit breaker to trip preferably include overcurrents and short circuits. In the graph of [Fig. 3], the detection criterion associated with an overcurrent is, for example, a peak-to-peak amplitude greater than a second threshold S2. Naturally, the second threshold S2 is greater than the first threshold S1. The second threshold S2 is here on the order of 40 g. The detection criterion associated with short circuits is here a maximum amplitude greater than a predetermined third threshold S3. The third threshold S3 is here on the order of 80 g.

[0059] The embodiments and variants mentioned above can be combined with each other to generate new embodiments of the invention.

Claims

Demands

1. A detection method for an electrical installation (10), wherein: • the electrical installation (10) comprises: • a bracket (22), suitable for mounting at least one circuit breaker (20), • a circuit breaker (20), which is mounted on the bracket (22), • a vibration sensor (30), which is mounted on the bracket (22) and which is suitable for measuring at least one characteristic quantity of the vibrations generated by the circuit breaker (20) when the circuit breaker (20) trips, • a control unit (40), which is configured to receive the measurements from the vibration sensor (30), • the detection method comprises: • when the circuit breaker (20) trips, the measurement (101) of a characteristic quantity of the vibrations generated by the circuit breaker (20), by means of the vibration sensor (30), • the reception (102) of the measurements from the vibration sensor (30) by the control unit (40),• the comparison (104) of vibration measurements to at least one predefined detection criterion, each detection criterion being previously recorded in a memory (42B) of the control unit (40), • as a result of the comparison, the detection (105) of a tripping of the circuit breaker (20).

2. A detection method according to claim 1, wherein: • the vibration sensor (30) is configured to switch between a sleep state, in which the vibration sensor (30) consumes no power, and an awake state, in which the vibration sensor (30) measures at least one characteristic quantity of the vibrations and transmits the measurements to the control unit (40), the vibration sensor (30) being configured to: • transition from sleep to wakefulness when the vibration sensor (30) is subjected to vibrations where at least one characteristic value exceeds a predefined wakefulness threshold (WT), and • transition from wakefulness to sleep at the latest after a predetermined time interval (ATI), • when the circuit breaker (20) is tripped, the measurement (101) of at least one characteristic quantity is preceded by an initial step (100) of waking up the vibration sensor (30), during which the vibration sensor (30), initially in the sleep state, goes into the wake state under the effect of the vibrations generated by the tripping of the circuit breaker (20), the measurement of at least one characteristic quantity then being made using the vibration sensor (30) in the wake state.

3. A detection method according to any one of claims 1 or 2, wherein: • Several detection criteria are pre-recorded in the memory (42B) of the control unit (40), each detection criterion being uniquely associated with a type of circuit breaker (20) and a type of electrical fault likely to cause the tripping of the circuit breaker (20) of the type considered, • during the comparison step (103), the measurements of at least one characteristic quantity are compared to the detection criteria associated with the type of circuit breaker (20) considered, • trip detection also includes identifying the type of electrical fault that caused the tripping of the circuit breaker (20) in question.

4. A detection method according to claim 3, wherein: Each detection criterion is uniquely associated with a type of circuit breaker (20) and a type of support (22) on which the circuit breaker (20) is likely to be mounted and to a type of electrical fault likely to cause the tripping of the circuit breaker (20) of the type considered.

5. A detection method according to any one of claims 3 or 4, wherein: • for each type of circuit breaker (20), the types of electrical faults that can cause the tripping of the circuit breaker (20) include overcurrents and short circuits.

6. A detection device (60), comprising: • a first vibration sensor (30), which is configured to be mounted on a circuit breaker support (22) (20) and which is suitable for measuring at least one characteristic quantity of the vibrations generated by the circuit breaker (20) when the circuit breaker (20) is tripped, • a control unit (40), which is configured to receive the measurements from the vibration sensor (30), in which the detection device (60) is configured to implement the detection method according to any one of claims 1 to 5.

7. Electrical installation (10), wherein: • the electrical installation (10) comprises: • a first support (22), suitable for mounting at least one circuit breaker (20), • a first circuit breaker (20), which is mounted on the first support (22), • the detection device according to claim 6, • the first vibration sensor (30) is mounted on the first support (22).

8. An electrical installation (10) according to claim 7, wherein: • several circuit breakers (20) are mounted on the first support (22), • the first vibration sensor (30) is adapted to measure the accelerations generated by the tripping of one any of the circuit breakers (20) mounted on the first support (22).

9. Electrical installation (10) according to any one of claim 7 or 8, wherein: • the first support (22) is selected from a mounting rail (22B) or a mounting plate (22A)

10. Electrical installation (10) according to any one of claims 7 to 9, wherein: • the electrical installation (10) provides an enclosure (14), • the electrical installation (10) comprises, in addition to the first support (22), at least one additional support (22), the first support (22) and each additional support (22) being received in the enclosure (14), • the electrical installation (10) comprises, in addition to the first vibration sensor (30), at least one additional vibration sensor (30), each additional vibration sensor (30) being mounted on a respective additional support (22), • the control unit (40) is configured to receive the measurements of the first vibration sensor (30) and of each additional vibration sensor (30).

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