Electronic unit for detecting at least one electrical fault for modular electrical protective equipment and associated modular electrical protective equipment
Patent Information
- Application Number
- FR2023002732
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-03-23
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2043-03-23
Smart Images
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Abstract
Description
Title of the invention: Electronic unit for detecting at least one electrical fault for an electrical protection device in modular format and associated electrical protection device in modular format
[0001] The present invention relates to the field of electronic units for detecting at least one electrical fault for an electrical protection device in modular format and the field of electrical protection devices in modular format.
[0002] In the field of electrical equipment in the residential or tertiary sector, electrical protection devices in modular format are known, such as a differential circuit breaker with protection against an electrical fault of the electric arc fault type and with protection against overloads of the RCBO-AFDD type or without protection against overloads of the RCD-AFD type.
[0003] To add an additional function of protection against an electric arc fault to a cut-off device, it is known in particular from publication EP3470856A1 to provide a module for detecting an electric arc fault and a differential fault which is added and attached to a cut-off device or integrated into the housing of the cut-off device. In all cases, the assembly formed has the disadvantage of having a width which is worth at least two modules, i.e. substantially 36 millimeters.
[0004] The present invention aims to overcome at least one of these drawbacks and to propose an alternative solution which is more compact.
[0005] To this end, the invention relates to an electronic unit for detecting at least one electrical fault for an electrical protection device in modular format, said electronic unit comprising at least: - a differential fault measurement core configured to be crossed by a first electrical line and a second electrical line, - a toroid for measuring an electric arc fault configured to be crossed preferably only by the first electric line, - an electronic circuit electrically connected on the one hand to the measuring core of a differential fault and on the other hand to the measuring core of an electric arc fault, said electronic circuit further comprising a first module for processing a first signal measured by the differential fault measurement core electrically connected to the differential fault measurement core, a second module for processing of a second signal measured by the measuring toroid of an electric arc fault electrically connected to the measuring toroid of an electric arc fault, a trigger module configured to be electrically connected to an electromagnetic actuator, and a power supply module,
[0006] said electronic detection unit is characterized in that said electronic circuit comprises at least: - a first electronic card comprising the first processing module and the trigger module, - a second electronic card comprising the second processing module and being electrically connected to the first electronic card, in that at least the second electronic card is perpendicular to the first electronic card in a normal direction, and
[0007] in that the second electronic card extends in the normal direction over a first width less than a modular width equal to a single module, i.e. substantially 17.7 millimeters, so that the thickness of said electronic unit in a normal direction is less than the modular width equal to a single module.
[0008] The invention also relates to a second electronic card for said electronic detection unit according to the invention, characterized in that the second electronic card comprises the second processing module and is configured to be electrically connected to the first electronic card, in that at least the second electronic card is configured to be perpendicular to the first electronic card in a normal direction, and in that the second electronic card extends in the normal direction over a first width less than a modular width equal to a single module, i.e. substantially 17.7 millimeters.
[0009] The invention also relates to an electrical protection device in modular format comprising at least: - a housing in modular format, - the first electrical line, preferably phase, comprising a pair of contacts, respectively a fixed contact and a movable contact, - the second electrical line, preferably neutral, - a chamber for extinguishing an electric arc, - a control member for the position of the movable contact, connected to the movable contact by means of a mechanical lock capable of switching between two stable positions corresponding respectively to the opening and closing of the fixed and movable contacts following an action on the control member, or of switching into an open position of the fixed and movable contacts following a mechanical action of at least one trigger relaying an electrical fault on said at least first electrical line, - triggering means comprising at least one magnetic and / or thermal actuator and / or an electronic and / or electromechanical actuator provided to actuate said at least one trigger for the purpose of triggering the mechanical lock, and - an electronic detection unit, said electrical protection apparatus is characterized in that said electronic detection unit is according to the invention.
[0010] The invention will be better understood from the following description, which relates to several preferred embodiments, given as non-limiting examples, and explained with reference to the appended schematic drawings, in which:
[0011] [Fig-1] [Fig. 1] represents a perspective view of the electronic detection unit according to the invention,
[0012] [Fig.2] [Fig.2] represents a perspective and exploded view of the electronic detection unit according to the invention illustrated in [Fig.l],
[0013] [Fig. 3] Figures 3A and 3B each represent a perspective view of a first electronic card of the electronic detection unit according to the invention,
[0014] [Fig.4] [Fig.4] represents a perspective view of a second electronic card of the electronic detection unit according to the invention,
[0015] [Fig.5] [Fig.5] represents a perspective view of a third electronic card of the electronic detection unit according to the invention,
[0016] [Fig.6] [Fig.6] represents a perspective view of the electronic detection unit according to the invention contained in a receiving compartment of a housing of an electrical protection device,
[0017] [Fig.7] [Fig.7] represents a perspective view of the electrical protection apparatus according to the invention showing the electronic detection unit according to the invention contained in the receiving compartment of the housing and a main electromechanical compartment of the housing,
[0018] [Fig.8] [Fig.8] represents a perspective view of the electrical protection apparatus according to the invention showing the electronic detection unit according to the invention contained in the receiving compartment of the housing, and
[0019] [Fig.9] [Fig.9] represents a perspective view of the electrical protection apparatus according to the invention showing the housing in modular format.
[0020] The invention relates to an electronic unit for detecting at least one electrical fault for an electrical protection device 1 in modular format, said electronic unit comprises at least:
[0021] - a differential fault measurement torus 2 configured to be crossed by a first power line 3 and a second power line 4,
[0022] - a torus for measuring an electric arc fault 5 configured to be crossed by preferably only by the first power line 3,
[0023] - an electronic circuit 6 electrically connected on the one hand to the measuring core of a differential fault 2 and on the other hand to the measurement torus of an electric arc fault 5,
[0024] said electronic circuit 6 further comprising a first module for processing a first signal measured by the measurement torus of a differential fault electrically connected to the measurement torus of a differential fault 2, a second module for processing a second signal measured by the measurement torus of an electric arc fault electrically connected to the measurement torus of an electric arc fault 5, a trigger module configured to be electrically connected to an electromagnetic actuator 7, and a power supply module.
[0025] According to the invention, said electronic detection unit is characterized in that said electronic circuit 6 comprises at least:
[0026] - a first electronic card 8 comprising the first processing module and the trigger module, and
[0027] - a second electronic card 9 comprising the second processing module and being electrically connected to the first electronic card 8,
[0028] in that at least the second electronic card 9 is perpendicular to the first electronic card 8 in a normal direction DN, and
[0029] in that the second electronic card 9 extends in the normal direction DN over a first width 11 less than a modular width equal to a single module, i.e. substantially 17.7 millimeters, so that the thickness of said electronic unit Lu in a normal direction DN is less than the modular width equal to a single module.
[0030] Advantageously, this arrangement makes it possible to obtain an electronic detection unit which is of compact design, the thickness of the electronic unit Lu of which does not exceed 17.7 millimeters and is preferably less than or equal to 17 millimeters, and which is divided into at least two electronic subassemblies comprising at least two electronic cards, namely the first electronic card 8 and the second electronic card 9. In the example illustrated, this thickness of the electronic unit Lu is at least approximately the sum of the thickness el of the first electronic card 8 and the first width 11 of the second electronic card 9. This configuration advantageously makes it possible to avoid having a single main electronic card whose size must be increased, either in its length or in its width to integrate both the second processing module and the power supply module.This solution also makes it possible not to be limited to the two sides of a single main electronic card to distribute the various electronic components. Consequently, the electronic detection unit according to the invention can easily be installed in an electrical protection device 1 comprising a housing 20 in modular format and. whose width 1b of the housing 20 is equal to one module, i.e. approximately 17.7 millimeters, and whose length Lb of the housing 20 preferably does not exceed 135 millimeters. In this case, the power supply module may for example be part of the first electronic card 8 or be moved to another electronic card hereinafter referred to as the third electronic card 10.
[0031] Preferably, said electronic detection unit further comprises a third electronic card 10 comprising the power supply module and being electrically connected to the first electronic card 8.
[0032] Advantageously, this arrangement makes it possible to obtain an electronic detection unit which is of compact design, the thickness of the electronic unit Lu of which does not exceed 17.7 millimeters and is preferably less than or equal to 17 millimeters, and which is divided into three electronic subassemblies comprising three electronic cards, namely the first electronic card 8 and the second electronic card 9 and the third electronic card 10. In the example illustrated, this width of the electronic unit Lu is approximately the sum of the thickness el of the first electronic card 8 and the first width 11 of the second electronic card 9. This configuration advantageously makes it possible to avoid having a single main electronic card whose size must be increased, either in its length or in its width to integrate both the second processing module and the power supply module.
[0033] Preferably, the third electronic card 10 is perpendicular to the first electronic card 8 in the normal direction DN and the third electronic card 10 extends in the normal direction DN over a second width 12 less than the modular width equal to a single module, i.e. substantially 17.7 millimeters.
[0034] Advantageously, this configuration further improves the compactness because the second electronic card 9 and the third electronic card 10 are both perpendicular to the first electronic card 8 in the same normal direction DN or in other words on the same side of the first electronic card 8. In addition, the first width 11 of the second electronic card 9 and the second width 12 of the third electronic card 10 are both less than one module, i.e. approximately 17.7 millimeters, and are for example equal to approximately 12 millimeters, which makes it possible to obtain an electronic unit of compact design and the thickness of the electronic unit Lu of which does not exceed 17.7 millimeters and is preferably less than or equal to 17 millimeters.The thickness of the electronic unit Lu is at least approximately the maximum value chosen from the following list containing the sum of at least the thickness el of the first electronic card 8 and the first width 11 of the second electronic card 9, the sum of at least the thickness el of the first electronic card 8 and the second width 12 of the third electronic card 10.
[0035] Preferably, the second electronic card 9 and the third electronic card 10 are mounted perpendicularly by their respective edges on the first electronic card 8 and the second electronic card 9 and the third electronic card 10 are distant from each other by a determined inter-card distance di and perpendicular to each other.
[0036] The distance di is preferably equal to 14 millimeters. The distance di is preferably at least equal to 4 millimeters.
[0037] Preferably, the first electronic card 8 comprises a first mounting face 11 on which at least one first connector 12 is mounted and the second electronic card 9 comprises a second connector 13 complementary to the first connector 12, the first connector 12 and the second connector 13 being configured to electrically and mechanically connect the second electronic card 9 to the first electronic card 8 perpendicularly in the normal direction DN.
[0038] In this configuration, the connection between the first connector 12 and the second connector 13 makes it possible both to electrically connect the second electronic card 9 to the first electronic card 8, but also to mechanically connect the second electronic card 9 to the first electronic card 8 so that the second electronic card 9 is mounted perpendicular to the first mounting face 11 of the first electronic card 8 in the normal direction DN.
[0039] Preferably, the first mounting face 11 further comprises a third connector 14 and the third electronic card 10 comprises a fourth connector 15 complementary to the third connector 14, the third connector 14 and the fourth connector 15 being configured to electrically and mechanically connect the third electronic card 10 to the first electronic card 8 perpendicularly in the normal direction DN.
[0040] In this configuration, the connection between the third connector 14 and the fourth connector 15 makes it possible both to electrically connect the third electronic card 10 to the first electronic card 8, but also to mechanically connect the third electronic card 10 to the first electronic card 8 so that the third electronic card 10 is mounted perpendicular to the first mounting face 11 of the first electronic card 8 in the normal direction DN.
[0041] Preferably, the first connector 12 is a female connector and the second connector 13 is a male edge connector.
[0042] Advantageously, in this configuration the male edge connector can be inserted into the female connector to electrically and mechanically connect the second electronic card 9 to the first electronic card 8. Similarly, the male edge connector can be removed from the female connector to electrically and mechanically disconnect the second electronic card 9 from the first card electronics 8. This results in a simplification of the electrical and mechanical connection / disconnection of the second electronic card 9 to the first electronic card 8, in particular during the assembly of the electronic unit. In addition, this second electronic card 9 has the advantage of being thus made removable from the first electronic card 8 and interchangeable, in particular if some of the electronic components must be substituted, for example in the event of shortages or changes in standards.
[0043] Preferably, the third connector 14 is a female connector and the fourth connector 15 is a male edge connector.
[0044] Advantageously, in this configuration the male edge connector can be inserted into the female connector to electrically and mechanically connect the third electronic card 10 to the first electronic card 8. Similarly, the male edge connector can be removed from the female connector to electrically and mechanically disconnect the third electronic card 10 from the first electronic card 8. This results in a simplification of the electrical and mechanical connection / disconnection of the third electronic card 10 to the first electronic card 8, in particular during assembly of the electronic unit. In addition, this third electronic card 10 has the advantage of being thus made removable from the first electronic card 8 and interchangeable, in particular if some of the electronic components must be substituted, for example in the event of shortages or changes in standards.
[0045] Preferably, the second electronic card 9 comprises a first face 16 carrying a plurality of electronic components forming the second processing module and a second face 17 opposite the first face 16 and the toroid for measuring an electric arc fault 5 is mounted on the second face 17.
[0046] Advantageously, this arrangement allows the plurality of electronic components forming the second processing module to be protected from the electromagnetic radiation of the measuring core of an electric arc fault 5 crossed by the first current line 3 and the second current line 4.
[0047] Furthermore, in this configuration and in particular if the second connector 13 is for example a male edge connector, the second electronic card 9 forms an independent module which can be used in other types of electrical protection equipment with protection against an electric arc fault. Thus, since the second electronic card 9 already has the advantage of being made removable from the first electronic card 8 and interchangeable, this independent module can be easily updated if some of the electronic components need to be substituted for example in the event of shortages or changes in standards.
[0048] Preferably, the second face 17 is located opposite the measuring core of a differential fault 2.
[0049] Advantageously, this arrangement thus allows the plurality of electronic components forming the second processing module to be protected from the electromagnetic radiation of the measuring torus of a differential fault 2 crossed by the first electrical line 3 and the second electrical line 4 and of the measuring torus of an electric arc fault 5 crossed by the first electrical line 3.
[0050] Preferably, the third electronic card 10 comprises a third face 18 carrying a plurality of electronic components forming the power supply module and a fourth face 19 opposite the third face 18.
[0051] Preferably, the fourth face 19 is located opposite the measuring core of a differential fault 2.
[0052] Advantageously, this arrangement thus allows the plurality of electronic components forming the power supply module to be protected from the electromagnetic radiation of the toroid for measuring an electric arc fault 5 crossed by the first electrical line 3 and the second current line 4 and of the toroid for measuring a differential fault 2 crossed by the first electrical line 3.
[0053] Preferably, the torus for measuring a differential fault 2 comprises a first longitudinal axis A1 and the torus for measuring an electric arc fault 5 comprises a second longitudinal axis A2 and the first longitudinal axis A1 and the second longitudinal axis A2 are not parallel to each other, and are preferably perpendicular to each other.
[0054] The invention also relates to the second electronic card 9 for said electronic detection unit according to the invention, characterized in that the second electronic card 9 comprises the second processing module and being configured to be electrically connected to the first electronic card 8, in that at least the second electronic card 9 is configured to be perpendicular to the first electronic card 8 in a normal direction DN, and in that the second electronic card 9 extends in the normal direction DN over a first width 11 less than a modular width equal to a single module, i.e. substantially 17.7 millimeters.
[0055] Preferably, the second electronic card 9 comprises the first face 16 carrying the plurality of electronic components forming the second processing module and the second face 17 opposite the first face 16 and the toroid for measuring an electric arc fault 5 is mounted on the second face 17.
[0056] Furthermore, preferably the second electronic card 9 comprises the second connector 13.
[0057] Advantageously, the second electronic card 9 forms an independent module which can be used in other types of electrical protection equipment with protection against an electric arc fault. The second electronic card 9 has the advantage of being removable from the first electronic card 8 and interchangeable and this independent module can be easily updated if some of the electronic components need to be replaced for example in the event of shortages or changes in standards.
[0058] The invention also relates to an electrical protection device 1 in modular format comprising at least:
[0059] - a 20-case modular format,
[0060] - the first electrical line 3, preferably phase comprising a pair of contacts respectively a fixed contact 21 and a movable contact 22,
[0061] - the second electrical line 4, preferably neutral,
[0062] - an electric arc extinguishing chamber 23,
[0063] - a control member 24 for the position of the movable contact 22, connected to the contact mobile 22 by means of a mechanical lock 25 capable of switching between two stable positions corresponding respectively to the opening and closing of the fixed and mobile contacts 21, 22 following an action on the control member 24, or of switching into an opening position of the fixed and mobile contacts 21, 22 following a mechanical action of at least one trigger reflecting an electrical fault on said at least first electrical line 3,
[0064] - triggering means comprising at least one magnetic actuator 27 and / or thermal 28 and / or an electronic and / or electromechanical actuator 7 provided to actuate said at least one trigger for the purpose of triggering the mechanical lock 25, and
[0065] - an electronic detection unit.
[0066] According to the invention, said electrical protection apparatus 1 is characterized in that said electronic detection unit is according to the invention described.
[0067] Advantageously, the electronic detection unit can be integrated into the electrical protection apparatus 1 with limited space requirements as explained previously.
[0068] Preferably, the housing 20 in modular format has a generally parallelepiped shape with two main faces, respectively a left main face 40 and a right main face 41, and lateral faces extending from one to the other of the main faces, namely a rear face 42, a front face 43, a lower face 44 and an upper face 45, the width 1b of the housing 20 corresponding to the distance between the left main face 40 and the right main face 41 and is equal to a single module, i.e. substantially 17.7 millimeters, and the housing 20 contains said electronic detection unit.
[0069] Advantageously, the electrical protection apparatus 1 has a modular format, preferably with the width 1b of the housing 20 being equal to one module, i.e. approximately 17.7 millimeters, which limits the size, particularly in an electrical panel in which it is intended to be installed.
[0070] The electronic detection unit according to the invention which is illustrated in figures 1 to 8 makes it possible on the one hand to detect an electrical fault of the differential fault type without depending on the network voltage, that is to say the presence of a residual current on an electrical line of an installation and to subsequently control the triggering of the electrical protection apparatus 1 using in particular the electromagnetic actuator 7 and on the other hand to detect an electrical fault of the electric arc fault type depending on the network voltage, that is to say the presence of an electric arc on an electrical line of the installation and to subsequently control the triggering of the electrical protection apparatus 1 using in particular the electromagnetic actuator 7.
[0071] The figures illustrate that the differential fault measurement toroid 2 and the electric arc fault measurement toroid 5 each comprise a toroidal coil wrapped in a toroidal housing comprising a cylindrical passage.
[0072] Preferably, the torus for measuring a differential fault 2 and the torus for measuring an electric arc fault 5 have a diameter which is between 10 and 16.5 millimeters and which is therefore less than the modular width equal to a single module, i.e. substantially 17.7 millimeters, and the internal width of the housing 20 which is substantially 17 millimeters.
[0073] The differential fault measuring torus 2 has a diameter preferably equal to 16.2 millimeters and has a diameter which is less than the entire internal width of the housing 20 which is substantially 17 millimeters. The depth between the faces of the differential fault measuring torus 2 is for example 6 millimeters.
[0074] The torus for measuring an electric arc fault 5 may, for example, have a shape which is generally cubic with sides measuring 12 millimeters.
[0075] The cylindrical passage of the differential fault measuring torus 2 is configured to allow the passage of the first electrical line 3 and the second electrical line 4, as illustrated in FIGS. 6 to 8.
[0076] The cylindrical passage of the torus for measuring an electric arc fault 5 is configured to allow the passage of only the first electrical line 3, the second electrical line 4 does not pass through the cylindrical passage, as illustrated in FIGS. 6 to 8.
[0077] The first longitudinal axis A1 corresponds to the axial direction of the cylindrical passage of the differential fault measuring torus 2 and the second longitudinal axis A2 corresponds to the axial direction of the cylindrical passage of the electric arc fault measuring torus 5.
[0078] The measuring core of a differential fault 2 makes it possible to measure an imbalance of electric current flowing in the first power line 3 and the second power line 4.
[0079] The differential fault measuring core 2 is preferably mounted on the first electronic card 8, but this example is not limiting.
[0080] The torus for measuring an electric arc fault 5 makes it possible to measure a signal characteristic of the presence of an electric arc in the electric current flowing in the first electric line 3.
[0081] The toroid for measuring an electric arc fault 5 is preferably mounted on the second electronic card 9, but this example is not limiting.
[0082] The electronic circuit 6 makes it possible to process at least on the one hand a first signal measured by the differential fault measurement core 2 using the first processing module and on the other hand a second signal measured by the electric arc fault measurement core 5 using the second processing module.
[0083] The first processing module does not need to be powered by the network voltage via the power supply module.
[0084] The second processing module is connected and powered by the power supply module.
[0085] The trigger module is connected on the one hand to the first processing module and on the other hand to the second processing module.
[0086] The trigger module is thus configured to control the electromagnetic actuator 7 from the signals processed by the first processing module and by the second processing module.
[0087] The electromagnetic actuator 7 is preferably integral with the first electronic card 8. The electromagnetic actuator 7 may for example be mounted on the first mounting face 11 or the second mounting face 37, of the first electronic card 8 preferably at the edge. According to an example not shown, the electromagnetic actuator 7 may also be located off-set from the first electronic card 8.
[0088] The electronic unit may further comprise an antenna 39. Preferably, the antenna is mounted on the first electronic card 8.
[0089] Figures 1 to 3B and 6 to 8 illustrate the first electronic card 8 according to an example. The first electronic card 8 is preferably a printed circuit with the assembled electronic components of the PCBA type.
[0090] The normal direction DN corresponds to a vector normal to the surface of the first mounting face 11 of the first electronic card 8.
[0091] The first electronic card 8 preferably comprises the first mounting face 11 on which are mounted the first connector 12 and the third connector 14 which are preferably of the female connector type. On this first mounting face 11 are also mounted a varistor 29 and the electro actuator magnetic 7. The first mounting face 11 also corresponds to the face of the first electronic card 8 on the side of which the first electrical line 3 and the second electrical line 4 are intended to run as particularly illustrated in figures 6 to 8.
[0092] Preferably, the first connector 12, the third connector 14, the varistor 29 and the electromagnetic actuator 7 each have a height which is between 5 and 12 millimeters and which is therefore less than the modular width equal to a single module, i.e. substantially 17.7 millimeters.
[0093] Preferably, the first connector 12 and the third connector 14 each have a height which is between 4 and 6 millimeters and which is preferably 5 millimeters.
[0094] Preferably the electromagnetic actuator 7 has a height which is between 10 and 12 millimeters and which is preferably 12 millimeters. Preferably, the electromagnetic actuator 7 has a height which corresponds substantially to the height available between the first mounting face 11 and the inner surface of the right main face 41 of the housing 20.
[0095] Preferably, the first connector 12 and the third connector 14 each comprise a slot 30 which is provided with a plurality of contacts 31 and which extends in height in the normal direction DN.
[0096] Preferably, the first connector 12 and the third connector 14 are perpendicular to each other.
[0097] The first electronic card 8 preferably comprises a second mounting face 37 illustrated in [Fig. 3B] which is opposite the first mounting face 11 and which comprises the electronic components which form the first processing module and the trigger module. The electronic components which form the first processing module and the trigger module preferably comprise in particular a microprocessor 38. The second mounting face 37 may also comprise the antenna 39 as illustrated in [Fig. 3B].
[0098] This arrangement thus allows the electronic components which form the first processing module and the trigger module to be protected from the electromagnetic radiation resulting from the passage of the first electrical line 3 and the second electrical line 4.
[0099] The first electronic card 8 preferably has a thickness el which is between 1 millimeter and 1.6 millimeters and is for example 1.2 millimeters.
[0100] The first electronic card 8 preferably has a width 1 which is between 54 millimeters and 55 millimeters and is for example 54.4 millimeters.
[0101] The first electronic card 8 preferably has a length L which is between 57.8 millimeters and 58.8 millimeters.
[0102] The first electronic card 8 preferably has a mounting orifice 32 crossed by the differential fault measurement torus 2. Thus, the differential fault measurement torus 2 projects from the first mounting face 11 over a first height h1, for example equal to 12 millimeters, and from the second mounting face over a second height h2, for example equal to 3 millimeters. This mounting orifice 32 preferably has a rectangular shape. This mounting orifice 32 is arranged opposite the first connector 12 so that the differential fault measurement torus 2 is arranged opposite the first connector 12.
[0103] Furthermore, preferably the first longitudinal axis A1 is parallel to the first and second mounting faces 11, 37. The cylindrical passage of the differential fault measuring torus 2 is preferably located on the side of the first mounting face 11. In this way, the first electrical line 3 and the second electrical line 4 can be easily passed through the cylindrical passage of the differential fault measuring torus 2 on the side of the first mounting face 11. This avoids electromagnetic radiation on the side of the second mounting face 37.
[0104] The second electronic card 9 is illustrated in figures 1, 2, 4 and 6 to 8 and is preferably a printed circuit with the assembled electronic components of the PCBA type.
[0105] The second electronic card 9 preferably has the first width 11 which is between 11.6 millimeters and 12 millimeters.
[0106] The second electronic card 9 preferably has a length L1 which is between 26.6 millimeters and 27 millimeters.
[0107] The second electronic card 9 preferably comprises the first face 16 which carries the plurality of electronic components forming the second processing module.
[0108] The first face 16 thus also corresponds to the face of the second electronic card 9 on the side of which the part of the first electrical line 3 downstream of the torus for measuring an electric arc fault 5 is intended to run, as illustrated in Figures 6 to 8.
[0109] In order to electrically isolate the first face 16 from the passage of this part of the first electrical line 3, it is possible to interpose a first insulating wall 33 visible in [Fig.8] and which is arranged substantially parallel to and in front of the first face 16 between the latter and the part of the first electrical line 3 downstream of the torus for measuring an electric arc fault 5. This arrangement makes it possible to guarantee a certain distance between the second electronic card 9 and the first electrical line 3, the insulation distance range is normative, but generally greater than 4 millimeters.
[0110] The first insulating wall 33 can be extended to also insulate the area devoid of electronic components of the second face 17 described below.
[0111] The second electronic card 9 preferably comprises the second face 17 on which is mounted projecting the torus for measuring an electric arc fault 5. In the example illustrated, the torus for measuring an electric arc fault 5 projects only from the second face 17 over a third height h3 preferably equal to 12 millimeters and which is therefore less than the modular width equal to a single module, i.e. substantially 17.7 millimeters. The torus for measuring an electric arc fault 5 is preferably welded to the second face 17. Preferably, the second face 17 is devoid of other electronic components and comprises an area devoid of electronic components arranged opposite the torus for measuring a differential fault 2.
[0112] Furthermore, preferably the second longitudinal axis A2 of the torus for measuring an electric arc fault 5 is parallel to the first and second faces 16, 17. The cylindrical passage of the torus for measuring an electric arc fault 5 is preferably located on the side of the second face 17. In this way, the first electrical line 3 can be easily passed through the cylindrical passage of the torus for measuring an electric arc fault 5 on the side of the first mounting face 11, as illustrated in FIGS. 6 to 8. The second face 17 thus also corresponds to the face of the second electronic card 9 on the side of which the part of the first electrical line 3 passing through the torus for measuring an electric arc fault 5 is intended to pass, as illustrated in FIGS. 6 to 8.
[0113] Preferably, the second connector 13 is of the male edge connector type, also commonly referred to by the Anglicism “board edge” connector. This male edge connector comprises a plurality of tracks 34 which are arranged on an edge portion 35 of the second electronic card 9 on both the first face 16 and the second face 17. The edge portion 35 has a shape which is configured to be inserted into the slot 30 of the first connector 12. Preferably, the male edge connector comprises six tracks 34 on the side of the first face 16 and six tracks 34 on the side of the second face 17.
[0114] The third electronic card 10 is illustrated in figures 1, 2, 5 and 6 to 8 and is preferably a printed circuit with the assembled electronic components of the PCBA type.
[0115] The third electronic card 10 preferably has the second width 12 which is between 11.6 millimeters and 12 millimeters.
[0116] The third electronic card 10 preferably has a second length L2 which is between 30.8 millimeters and 31.2 millimeters.
[0117] The third electronic card 10 preferably comprises the third face 18 which carries the plurality of electronic components forming the power supply module.
[0118] The third face 18 also corresponds to the face of the third electronic card 10 on the side of which neither the first electrical line 3 nor the second electrical line 4 pass, as illustrated in Figures 6 to 8.
[0119] The third electronic card 10 preferably comprises the fourth face 19 which is devoid of electronic components.
[0120] As illustrated in Figures 6 to 8, the fourth face 19 thus also corresponds to the face of the third electronic card 10 on the side of which the part of the first electrical line 3 passing through the torus for measuring an electric arc fault 5 downstream of the torus for measuring a differential fault 2 is intended to run and on the side of which the part of the second electrical line 4 downstream of the torus for measuring a differential fault 2 is intended to run. The part of the second electrical line 4 downstream of the torus for measuring a differential fault 2 is intended to run is preferably directly opposite the fourth face 19.
[0121] In order to electrically isolate the fourth face 19 from the passage of this part of the second electrical line 4, it is possible to interpose a second insulating wall 36 which is visible in [Fig.8] and which is arranged substantially parallel to and in front of the fourth face 19 between the latter and the part of the second electrical line 4 downstream of the differential fault measurement toroid 2. This arrangement makes it possible to guarantee a certain distance between the third electronic card 10 and the fourth electrical line 4, the insulation distance range is normative, but generally greater than 4 millimeters.
[0122] Preferably, the second insulating wall 36 is perpendicular to the first insulating wall 33.
[0123] Preferably, the second insulating wall 36 and the first insulating wall 33 are joined by a joining wall 36a.
[0124] Preferably, the fourth connector 15 is of the male edge connector type, also commonly referred to by the Anglicism “board edge” connector. This male edge connector comprises a plurality of tracks 34 which are arranged on an edge portion 35 of the third electronic card 10 only on the third face 18. The edge portion 35 has a shape which is configured to be inserted into the slot 30 of the third connector 14. Preferably, the male edge connector comprises three tracks 34 on the side of the third face 18.
[0125] Preferably, the electrical protection apparatus 1 is a differential circuit breaker with protection against an electrical fault of the electric arc fault type with protection against overloads of the RCBO-AFDD type as illustrated in figures 7 to 9 or without protection against overloads of the RCD-AFD type according to an example not shown.
[0126] The first electrical line 3 and the second electrical line 4 allow the cir culation within the electrical apparatus for protecting the electric current coming from an upstream electrical installation. The first electrical line 3 is preferably connected to a phase potential and the second electrical line 4 is preferably connected to a neutral potential.
[0127] Preferably, the first electrical line 3 comprises upstream a first input connection terminal 48 and downstream a first output connection terminal 49.
[0128] Preferably, the second electrical line 4 comprises, upstream if necessary, a second input connection terminal 48' and downstream if necessary a second output connection terminal 50.
[0129] The first input connection terminal 48 and possibly the second input connection terminal 48' preferably open from the upper face 45.
[0130] The first output connection terminal 49 and the second output connection terminal 50 preferably open from the lower face 44.
[0131] The modular format housing 20 makes it possible to contain the various components of the electrical protection apparatus 1 and in particular its electronic detection unit according to the invention.
[0132] Preferably, the first electronic card 8 is parallel to the left main face 40 and to the right main face 41 of the housing 20 in modular format.
[0133] Preferably, the second electronic card 9 is perpendicular to the left main face 40 and the right main face 41 of the housing 20 in modular format.
[0134] Preferably, the third electronic card 10 is perpendicular to the left main face 40 and the right main face 41 of the housing 20 in modular format.
[0135] Preferably, the first insulating wall 33 and the second insulating wall 36 form part of the right main face 41 and project perpendicularly thereto towards the inside of the housing 20.
[0136] The housing 20 in modular format preferably has a receiving compartment 46 for the electronic detection unit according to the invention and a main electromechanical compartment 47.
[0137] In the illustrated example, the receiving compartment 46 of the electronic detection unit is located in the lower part of the housing 20 and is arranged on the side of the lower face 44 and comprises in particular the electronic detection unit according to the invention, the first output connection terminal 49 and the second output connection terminal 50. The main electromechanical compartment 47 is located in the upper part of the housing 20 and is arranged on the side of the upper face 45 and comprises in particular the fixed contact 21, the movable contact 22, the electric arc extinguishing chamber 23, the mechanical lock 25, the trigger, the magnetic actuator 27 and / or thermal actuator 28, the first input connection terminal 48 and possibly the second input connection terminal 48'.
[0138] This arrangement allows late differentiation of the electrical protection apparatus 1 depending in particular on the contents of the receiving compartment 46 of the electronic detection unit.
[0139] The length Lb of the housing 20 corresponds to the distance between the upper face 45 and the lower face 44 and is substantially equal to 135 millimeters.
[0140] The electrical protection apparatus 1 comprises a cut-off unit comprising at least the pair of fixed 21 and movable 22 contacts which can adopt an open position in which the current no longer flows in the electrical line of the installation and a closed position in which the current can flow in the electrical line of the installation. The switching from the closed position to the open position is carried out following a trigger command, for example, coming from the electronic detection unit according to the invention.
[0141] The electromagnetic actuator 7 is electrically connected to the electronic detection unit according to the invention which in particular makes it possible to control the electromagnetic actuator 7 from the signals measured on the one hand by the differential fault measurement torus 2 and by the electric arc fault measurement torus 5. The electromagnetic actuator 7 also makes it possible to mechanically actuate the trigger which will act on the mechanical lock 25.
[0142] The control member 24 may be in the form of a lever and is at least partly protruding from the housing 20, preferably from the front face 43.
[0143] Of course, the invention is not limited to the embodiments described and shown in the attached drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.
Claims
1. Claims Electronic unit for detecting at least one electrical fault for an electrical protection device (1) in modular format, said electronic unit comprising at least: - a differential fault measuring core (2) configured to be crossed by a first electrical line (3) and a second electrical line (4), - a torus for measuring an electric arc fault (5) configured to be crossed preferably only by the first electric line (3), - an electronic circuit (6) electrically connected on the one hand to the measuring core of a differential fault (2) and on the other hand to the measuring core of an electric arc fault (5), said electronic circuit (6) further comprising a first module for processing a first signal measured by the differential fault measurement torus electrically connected to the differential fault measurement torus (2), a second module for processing a second signal measured by the electric arc fault measurement torus electrically connected to the electric arc fault measurement torus (5), a trigger module configured to be electrically connected to an electromagnetic actuator (7), and a power supply module, said electronic detection unit is characterized in that said electronic circuit (6) comprises at least: - a first electronic card (8) comprising the first processing module and the trigger module, - a second electronic card (9) comprising the second processing module and being electrically connected to the first electronic card (8), in that at least the second electronic card (9) is perpendicular to the first electronic card (8) in a normal direction (DN), and in that the second electronic card (9) extends in the normal direction (DN) over a first width (11) less than a modular width equal to a single module, i.e. substantially 17.7 millimeters, so that the thickness of said electronic unit (Lu) in a normal direction (DN) is less than the modular width worth a single module.
2. Electronic detection unit according to claim 1, characterized in that it further comprises a third electronic card (10) comprising the power supply module and being electrically connected to the first electronic card (8),
3. Electronic detection unit according to claim 2, characterized in that the third electronic card (10) is perpendicular to the first electronic card (8) in the normal direction (DN) and in that the third electronic card (10) extends in the normal direction (DN) over a second width (12) less than the modular width equal to a single module, i.e. substantially 17.7 millimeters.
4. Electronic detection unit according to claim 3, characterized in that the second electronic card (9) and the third electronic card (10) are mounted perpendicularly by their respective edges on the first electronic card (8) and in that the second electronic card (9) and the third electronic card (10) are distant from each other by a determined inter-card distance di and perpendicular to each other.
5. Electronic detection unit according to any one of claims 1 to 4, characterized in that the first electronic card (8) comprises a first mounting face (11) on which at least one first connector (12) is mounted and in that the second electronic card (9) comprises a second connector (13) complementary to the first connector (12), the first connector (12) and the second connector (13) being configured to electrically and mechanically connect the second electronic card (9) to the first electronic card (8) perpendicularly in the normal direction (DN).
6. Electronic detection unit according to claims 3 and 5, characterized in that the first mounting face (11) further comprises a third connector (14) and in that the third electronic card (10) comprises a fourth connector (15) complementary to the third connector (14), the third connector (14) and the fourth connector (15) being configured to electrically and mechanically connect the third electronic card (10) to the first electronic card (8) perpendicularly in the normal direction (DN).
7. Electronic detection unit according to any one of claims 5 to 6, characterized in that the first connector (12) is a female connector and in that the second connector (13) is a male edge connector.
8. Electronic detection unit according to claim 6 or according to claim 7 in its dependency with claim 6, characterized in that the third connector (14) is a female connector and in that the fourth connector (15) is a male edge connector.
9. Electronic detection unit according to any one of claims 1 to 8, characterized in that the second electronic card (9) comprises a first face (16) carrying a plurality of electronic components forming the second processing module and a second face (17) opposite the first face (16) and in that the torus for measuring an electric arc fault (5) is mounted on the second face (17).
10. Electronic detection unit according to claim 9, characterized in that the second face (17) is located opposite the differential fault measurement core (2).
11. Electronic detection unit according to claim 2 or according to any one of claims 3 to 10 in their dependence on claim 2, characterized in that the third electronic card (10) comprises a third face (18) carrying a plurality of electronic components forming the power supply module and a fourth face (19) opposite the third face (18).
12. Electronic detection unit according to claim 11, characterized in that the fourth face (19) is located opposite the differential fault measurement core (2).
13. Electronic detection unit according to any one of claims 1 to 12, characterized in that the torus for measuring a differential fault (2) comprises a first longitudinal axis (Al) and the torus for measuring an electric arc fault (5) comprises a second longitudinal axis (A2) and in that the first longitudinal axis (Al) and the second longitudinal axis (A2) are not parallel to each other, and are preferably perpendicular to each other.
14. Second electronic card (9) for said electronic detection unit according to any one of claims 1 to 13, characterized in that the second electronic card (9) comprises the second processing module and being configured to be electrically connected to the first electronic card (8), in that at least the second electronic card (9) is configured to be perpendicular to the first electronic card (8) in a normal direction (DN), and in that the second electronic card (9) extends in the normal direction (DN) over a first width (11) less than a modular width equal to a single module, i.e. substantially 17.7 millimeters.
15. Second electronic card (9) according to claim 14, characterized in that it comprises a first face (16) carrying the plurality of electronic components forming the second processing module and a second face (17) opposite the first face (16) and in that the torus for measuring an electric arc fault (5) is mounted on the second face (17) and preferably the second electronic card (9) comprises a second connector (13).
16. Electrical protection apparatus (1) in modular format comprising at least: - a housing (20) in modular format, - the first electrical line (3), preferably phase, comprising a pair of contacts, respectively a fixed contact (21) and a movable contact (22), - the second electrical line (4), preferably neutral, - an electric arc extinguishing chamber (23), - a control member (24) for the position of the movable contact (22), connected to the movable contact (22) by means of a mechanical lock (25) capable of switching between two stable positions corresponding respectively to the opening and closing of the fixed and movable contacts (21, 22) following an action on the control member (24), or of switching into an opening position of the fixed and movable contacts (21, 22) following a mechanical action of at least one trigger reflecting an electrical fault on said at least first electrical line,- triggering means comprising at least one magnetic (27) and / or thermal (28) actuator and / or an electronic and / or electromechanical actuator (7) provided to actuate said at least one trigger for the purpose of triggering the mechanical lock (25), and - an electronic detection unit, said electrical protection apparatus is characterized in that said electronic detection unit is according to any one of claims 1 to 13.
17. Electrical protection apparatus according to claim 16, characterized in that the housing (20) in modular format has a generally parallelepiped shape with two main faces, respectively a left main face (40) and a right main face (41), and lateral faces extending from one to the other of the main faces, namely a rear face (42), a front face (43), a lower face (44) and an upper face (45), the width (1b) of the housing (20) corresponding to the distance between the left main face (40) and the right main face (41) and equals a single module, i.e. substantially 17.7 millimeters and in that the housing (20) contains said electronic detection unit.