Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
  • H01H71/7409—Interchangeable elements
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H2071/006—Provisions for user interfaces for electrical protection devices
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/04—Means for indicating condition of the switching device
  • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
  • H01H2071/467—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts with history indication, e.g. of trip and/or kind of trip, number of short circuits etc.
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
  • H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers

Definitions

• the present invention relates to electronic protection equipment such as an electronic protection circuit breaker.
• An electronic protection circuit breaker comprises, in known manner, an electronic protection trip device which performs a protection trip function.
• This electronic protection trip unit frequently designated by the acronym OCR (Over Current Relay), makes it possible in particular to electronically analyze the signals coming from different types of measurement sensors which send back an image of physical quantities which run through the current line and makes it possible to electronically control the electromechanical power sub-assembly and thus to control the opening of the circuit breaker in particular when a fault, for example of the overload and/or short-circuit type, is detected.
• the electronic protection trip unit thus makes it possible in particular to provide protection functions, for example, against overloads, against short circuits, against earth faults.
• the electronic protection trip unit can also be used to record a set of data relating, for example, to the configuration, settings and/or history of the electromechanical power subassembly of the circuit breaker or to fault events.
• An electronic protection circuit breaker can for example consist of an open or air circuit breaker, also frequently referred to by the acronym ACB (Air Circuit Breaker),
• This electronic protection trip unit can be made removable from the electromechanical power subassembly of the circuit breaker.
• the electronic protection trip unit is thus interchangeable and can thus be replaced, for example, following a breakdown or to update the circuit breaker.
• all of the data recorded in a specific storage memory that the electronic trip unit comprises is lost.
• Publication US 2019/0140429 A1 discloses a molded case circuit breaker which incorporates a processing unit intended to collect data relating to operating conditions of the circuit breaker and storing them in a memory card.
• An electronic card placed inside the casing includes the processing unit and allows connection of the memory card.
• This configuration makes it possible to collect the data relating to the operating conditions of the circuit breaker, then to store them in the memory card and then to export them to a remote external device.
• This molded case circuit breaker has the disadvantage of proposing a processing unit which cannot be replaced without degrading the circuit breaker. In the event of failure of the processing unit, it is thus necessary to replace the entire circuit breaker.
• the memory card is removable from the circuit breaker and is accessible through an opening in the casing, it is therefore made accessible to any type of user. As a result, it is not possible to guarantee the reliability of the information stored in the memory card.
• the purpose of the present invention is to overcome these drawbacks and proposes a solution making it possible to guarantee the traceability and the history of the electronic protection equipment.
• the invention relates to an electronic protective device according to claim 1.
• Figure 1 shows a perspective view of an electronic protection device of the circuit breaker type according to the invention
• figure 2 shows a perspective view of the electronic protection device of figure 1 in which the front cover of the case has been removed
• FIG. 3 shows a perspective view of the electronic protection device of figure 1 in which the front cover of the case and the electronic protection trip unit have been removed,
• FIG. 4 shows a perspective view from above of the electronic protection trip unit
• FIG. 5 shows a perspective view from below of the electronic protection trip unit
• Figure 6 shows a perspective view of the independent storage memory and a plurality of connectors.
• an electronic protection device comprises:
• At least one current sensor able and intended to detect the current flowing in said at least one current line and to emit an acquisition signal representative of the image of the current flowing in said at least one current line
• an electronic protection trip unit 1 electrically connected with said current sensor and able and intended to process said acquisition signal and, if necessary, to emit a protection trip control signal by comparing said acquisition signal and a trigger point
• a cut-off mechanism comprising at least one pair of contacts disposed respectively on said at least one current line and, being able and intended to be actuated by said actuator to open said at least one pair of contacts, the actuator and the breaking mechanism forming an electromechanical power sub-assembly,
• a housing 4 forming an envelope and containing at least the electromechanical power subassembly and said at least one current sensor.
• the electronic protection trip unit 1 is removably mounted relative to said housing 4 (FIGS. 1 to 5).
• the pair of contacts preferably comprises a fixed contact and a moving contact.
• said electronic protection device is characterized in that: said independent storage memory 2 is a distinct and separate entity from the electronic protection trip unit 1, and in that said independent storage memory 2 is contained inside said casing 4 and arranged in casing 4 so as to be made inaccessible from outside said casing 4.
• said independent storage memory 2 is not arranged in the electronic protection trip unit 1.
• the electronic protection device has the particularity of comprising an independent storage memory 2 which is independent of the electronic protection trip unit.
• removable protection 1 which makes it possible to store data in the electronic protection device independently of the presence or not of the electronic protection trip unit 1.
• the independent storage memory 2 makes it possible to store data originating in particular from the electronic protection trip unit 1, for example a copy of the data which was usually stored only in the electronic protection trip unit 1.
• this independent storage memory 2 is made inaccessible from outside the casing 4, which makes it possible to guarantee the reliability of the data stored therein and by extension in the electronic protection equipment 1. This advantageous configuration results in an optimization of the reliability of the data storage in the electronic protection equipment cover 1 .
• said housing 4 comprises a front cover 5 comprising an outer face 6 on which said electronic protection trip unit 1 is removably mounted (FIG. 1) and said independent storage memory 2 is made inaccessible from the outer face 6 of the front cover 5 (FIGS. 2 and 3).
• the electronic protection trip unit 1 is accessible from the outer face 6 of the front cover 5 and can thus be removed from the outside of the case 4.
• the independent storage memory 2 which is arranged at the inside of the case 4 is inaccessible and therefore cannot be removed from the outside of the case 4.
• the electronic protection trip unit 1 is removable from the exterior of the casing 4, while the independent storage memory 2 is not removable or irremovable from the exterior of the casing 4.
• the independent storage memory 2 is mounted fixed inside said housing 4 by at least one fixing member.
• the independent storage memory 2 can be fixed inside the case 4 so as not to be removed from the electronic protection equipment, in particular when the front cover 5 is removed.
• the independent storage memory 2 is mounted fixed relative to the fixed part of the electronic protection equipment.
• This fixed part comprises at least the electromechanical power subassembly, said at least one current line, and said at least one current sensor.
• the moving part comprises the electronic protection trip unit 1 and the front cover 5 of the box 4.
• the moving part is removable from the fixed part.
• the electronic protection trip unit 1 and the front cover 5 are removable from the fixed part.
• the independent storage memory 2 cannot be removed from the fixed part.
• the independent storage memory 2 can comprise at least one fixing device or be connected to one or more fixing devices. This attachment inside the housing 4 can therefore be direct or indirect.
• said independent storage memory 2 is contained in a protective casing 7.
• This protective casing 7 may include said at least one fixing member or be connected to said at least one fixing member.
• the fixing member may consist of a clip, a bonding element or the like.
• the independent storage memory 2 is connected to a first wired communication device 3 which is connected to a first connector 8.
• the first connector 8 and the first communication device wired 3 thus form a fixing member within the meaning of the present invention performing an indirect fixing as described above.
• the first connector 8 and the wired communication device 3 are arranged inside the casing 4.
• the first connector 8 and the wired communication device 3 are also part of the fixed part of the electronic protection equipment.
• the first connector 8 and the first wired communication device 3 are made inaccessible from the outer face 6 of the front cover 5. They cannot thus be removed by the outer face 6 of the front cover 5.
• the first connector 8 is configured to be connected to a complementary connector 17 which is intended to be connected to the electronic protection trip unit 1.
• This complementary connector is preferably integrated into the electronic protection trip unit 1.
• the first connector 8 is connected to a second wired communication device 9 connected to a second connector 10.
• This second connector 10 is configured to be connected to a second complementary connector (not shown) which is intended to be connected to a current sensor said first current sensor.
• the first connector 8 is connected to a third wired communication device 11 connected to a third connector 12.
• This third connector 12 is configured to be connected to a complementary third connector (not shown) which is intended to be connected to a second current sensor.
• the first connector 8 is connected to a fourth wired communication device 13 connected to a fourth connector 14.
• This fourth connector 14 is configured to be connected to a complementary fourth connector (not shown) which is intended to be connected to a third current sensor.
• the first connector 8 is connected to a fifth wired communication device 15 connected to a fifth connector 16.
• This fifth connector 16 is configured to be connected to a complementary fifth connector (not shown) which is intended to be connected to the actuator.
• the first wired communication device 3, the second wired communication device 9, the third wired communication device 11, the fourth wired communication device 13 and the fifth wired communication device 15 may consist of one or more electrical conductors , such as cables.
• said independent storage memory 2 is a non-volatile memory.
• the electronic protection device also comprises at least one voltage sensor and/or one temperature sensor.
• the electronic protection device can include at least three voltage sensors, distributed over three poles.
• the voltage sensor is able and intended to measure the potential and to emit an acquisition signal representative of the image of the voltage.
• This acquisition signal representative of the image of the voltage can be transmitted to the electronic protection trip unit 1 .
• the temperature sensor is able and intended to measure the internal temperature of the electronic protection trip unit 1 and to emit an acquisition signal representative of the internal temperature of the electronic protection trip unit 1.
• the temperature sensor is preferably included in the electronic protection trip unit 1 and can be integrated into its electronics.
• the electronic protection equipment can include other types of measurement sensors.
• the electronic protection equipment can comprise three phase current lines and a neutral current line.
• the electronic protection device may comprise a first current sensor associated with the current line of the first phase, a second current sensor associated with the current line of the second phase, a third current associated with the third phase current line and a fourth current sensor associated with the neutral current line.
• the electronic protection device can comprise three phase current lines and a neutral current line.
• the electronic protection device can comprise a first current and voltage sensor associated with the current line of the first phase, a second current and voltage sensor associated with the current line of the second phase, a third current and voltage sensor associated with the current line of the third phase and a fourth current and voltage sensor associated with the neutral current line.
• said electronic protection trip unit 1 comprises at least one processing unit (not shown) configured to determine and/or store a set of data relating to the configuration and history of said electromechanical power subassembly and/or the current sensor and/or, where appropriate, the voltage sensor and/or the temperature sensor of the electronic protection device.
• processing unit not shown
• the data can contain a set of variables with which values are associated.
• the data set may include data relating to:
• phase current line calibration data PASES-CALIBRATION-DATA
• neutral current line calibration data NUTRAL_CALIBRATION_DATA
• the data of the configuration of the electromechanical sub-assembly and of the sensors can include data representing the type of electromechanical sub-assembly (TYPE), the number of current lines (POLE_COUNT), the position of the line of neutral (NEUTRAL_POSITION), the brand (BRANDJXIAME), the sensitivity of the sensors (SENSOR_SENSITIVITY), the maximum of the nominal current (MAX_NOMINAL_CURRENT), the minimum of the nominal current (MIN_NOMINAL_CURRENT), the code of the manufacturing site (SITE_CODE), the production year (PRODUCTION_YEAR), production day (PRODUCTIONJDAY), serial number
• PRODUCT_FIELD_SERIAL_NUMBER the short-circuit current supported by the electronic protection device for 1 or 3 seconds, without opening the contacts (ICW), the ultimate short-circuit current that the electronic protection device can interrupt (ICU ), the short-circuit current value from which the electronic protection device will open the contacts (110), the short-circuit current value on closing the contacts from which the protection device will reopen the contacts (IMCR), the binary value, of enable or disable function 10 (IO_ENABLE), the binary value, enable or disable the MCR function (MCR_ENABLE).
• phase current line calibration data may include data representative of the compensation factor for the first current sensor associated with the current line of the first phase
• the calibration data for the neutral current line can include data representing the compensation factor for the fourth current sensor associated with the neutral current line (CURRENT_SENSOR_GAIN_N), the error factor for the serial impedance of the neutral current line N (SERIAL_IMPEDANCE_VN), of the phase error compensation of the fourth current and voltage sensor (PHASE_SHIFT_VN_IN), of the binary value, to record that the calibration has been carried out and that the data of compensation above are consistent
• the maintenance indicator data can include data representative of the number of operations of the contacts from the open state to the closed state (OPERATION_CYCLE), the date of the last maintenance (PREV_OPERATING_TIME), the maintenance date and time (DATE_AND_TIME), maintenance type (TYPE).
• the maintenance indicator settings can include data representative of the time threshold from which the maintenance indicator is activated if the OPERATING_TIME_ENABLE function is active (OPERATING_TIME_THRESHOLD), the number of maneuvers from which the maintenance indicator is activated if the OPERATION_CYCLE_ENABLE function is active (OPERATION_CYCLE_THRESHOLD), whether or not the time threshold is taken into account by the maintenance indicator function (OPERATING_TIME_ENABLE), whether or not the number of operations is taken into account by the maintenance indicator function (OPERATION_CYCLE_ENABLE), the activation or not of the maintenance indicator function (MAINTENANCE_INDICATOR_ENABLE).
• said independent storage memory 2 is configured to store said set of data relating to the configuration and history of said electromechanical power subassembly and/or of the current sensor and/or, where applicable, of the voltage sensor and/or temperature sensor of the electronic protection device.
• a copy of the data coming from the electronic protection trip unit 1 can be stored in the independent storage memory 2.
• this advantageous configuration makes it possible to store the configuration of the electromechanical power subassembly in the independent storage memory 2.
• it may be data relating to the MCR (Making Current Release)/IO (Instantaneous Override) protection tripping thresholds.
• this advantageous configuration makes it possible to log the traceability of the electromechanical power subassembly in the independent storage memory 2.
• it may be data relating to the serial number, the date of manufacture (date code).
• this advantageous configuration makes it possible to keep the events of the electronic protection equipment in the independent storage memory 2.
• it may be data relating to the temperature log, the load log , to the trigger log.
• said independent storage memory 2 is configured to communicate said set of data relating to the configuration and history of said power subassembly and/or of the current sensor and/or, where applicable, of the voltage and/or from the temperature sensor of the electronic protection device to the processing unit of said electronic protection trip unit 1 or to a replacement electronic protection trip unit.
• this advantageous configuration allows the communication of the data stored in said independent storage memory 2 to the electronic protection trip unit 1 or to a replacement electronic protection trip unit.
• This arrangement also allows pairing between at least one of the sensors described previously and the electronic protection trip unit 1 .
• the electronic protection trip device 1 compares the data stored in the independent storage memory 2 with those stored in the specific storage memory (described below) of the electronic protection trip unit 1. If a difference is observed, the electronic protection trip unit 2 recalculates the overall calibration of the electronic protection device and saves the result in the independent storage memory 2. If the memories match, pairing does not is not realized.
• the processing unit comprises at least one electronic card comprising at least one microcontroller and its own storage memory.
• the microcontroller makes it possible in particular to determine the set of data relating to the configuration and to the history of said electromechanical power subassembly and/or of the current sensor and/or, where appropriate, of the voltage sensor and/or the temperature sensor of the electronic protection device.
• the specific storage memory makes it possible in particular to store the set of data relating to the configuration and to the history of said electromechanical power subassembly and/or of the current sensor and/or, where appropriate, of the voltage sensor and/or the temperature sensor of the electronic protection device.
• the electronic protection equipment can consist of an air circuit breaker ACB (figures 1 to 3) or open or a molded case circuit breaker MCCB or a vacuum circuit breaker VCB or a modular circuit breaker MCB.

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• Emergency Protection Circuit Devices (AREA)

Priority Applications (2)

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Publications (1)

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Citations (5)

• 2020
  • 2020-11-18 FR FR2011815A patent/FR3116377B1/fr active Active
• 2021
  • 2021-11-18 WO PCT/EP2021/082110 patent/WO2022106525A1/fr active Application Filing
  • 2021-11-18 EP EP21815992.9A patent/EP4248477A1/fr active Pending
  • 2021-11-18 CN CN202180076914.4A patent/CN116670798A/zh active Pending

Patent Citations (5)

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