Abstract: A method of generating a trip current by a power supply device has electrical components and for the purpose of tripping a protection element connected between a load and the power supply device. In response to detecting an electrical fault situation in the power supply device, in order to eliminate the short-circuit fault with shortened tripping time, an AC trip current is generated having: for a first period of the signal, a current amplitude equal to the maximum current amplitude that can be withstood by the electrical components of the power supply device; and for the following periods, a current amplitude that decreases as a function of the thermal inertia of the electrical components.

Abstract: A current sensor provided with an electrical coil (5) made in the form of a printed circuit. Its closed contour is inscribed within a rectangle delimiting a through window (9) for passing a primary conductor (2). It comprises four rectilinear segments (TR) connected two by two by a circular sector (SC), delimited by an interior arc (10) and an exterior arc (11). It comprises, in its circular sectors (SC), additional turns (13), which extend from exterior arc (11) towards an intermediate arc (14) located between interior arc (10) and exterior arc (11). They are inserted between the main turns (12) in such a way that the spacing between two consecutive turns (12, 13) on the exterior arc (11) is equal to spacing (P) of the main turns (12) in rectilinear segments (TR) and that the average turns density is almost constant in electrical coil (5).

Abstract: A vibrating ripper for demolition comprising a chassis, a vibrating assembly supported by the chassis so that it can move with an alternating translational motion along a work direction between a first stroke limit position and a second stroke limit position, and at least one demolition tool associated with the vibrating assembly. In the second stroke limit position, the vibrating assembly is spaced further from the chassis with respect to the first stroke limit position. The vibrating assembly comprises a main body associated with at least one pair of oppositely rotating eccentric masses actuated rotationally by at least one motor element. The particularity of the invention resides in that it comprises means for detecting an abnormal movement of the vibrating assembly along the work direction beyond at least one of the stroke limit positions.

Abstract: An electric arc breaker device comprises a contact zone in which there are present at least one stationary contact and at least one movable contact that is movable relative to the stationary contact. The contacts are capable of being put into contact with each other and of being separated from each other. An arcing horn is present facing the stationary contact, the height hc of the arcing horn being greater than or equal to the height ht of the stationary contact, and the arcing horn presenting a folded-back arc switching portion extending in a direction away from the stationary contact.

Abstract: A method of generating a short-circuit current by a power supply device has electrical components and for the purpose of tripping a protection element connected between a load and the power supply device. In response to detecting an electrical fault situation in the power supply device, in order to eliminate the short-circuit fault with shortened tripping time, an AC short-circuit current is generated having: for a first period of the signal, a current amplitude equal to the maximum current amplitude that can be withstood by the electrical components of the power supply device; and for the following periods, a current amplitude that decreases as a function of the thermal inertia of the electrical components.

Abstract: An electric arc extinction chamber comprises a stack of electric arc splitter plates. The splitter plates define an inlet of the extinction chamber that is to be present facing electric contacts, and a back of the extinction chamber. At least one permanent magnet is present inside the extinction chamber in a central zone in the width direction of the extinction chamber and beside the back thereof. The magnet presents magnetization having a non-zero component along an axis extending between the inlet and the back of the extinction chamber.

Abstract: The invention relates to a method including the steps of measuring (EO) an electric current signal produced by the apparatus (100) at a sampling rate no lower than 50 kHz, and, from the measured current signal, determining (E3) an initial value (10) of the current before the occurrence of an electric arc, determining (E5) current values (Iarcj) during the electric arc, evaluating (E6) arc voltage values from the current values determined during the arc and from the initial value of the current, integrating (E7) over time the product of the arc voltage values evaluated by the determined current values, in order to determine the energy of the arc.

Abstract: The method comprises the steps of measuring (E0) a voltage signal at the terminals of at least one photovoltaic module of the installation (100) with a sampling frequency greater than or equal to 50 kHz and, from the measured voltage signal, determining an initial voltage preceding the appearance of the arc and voltage values during the electric arc; evaluating values of an electric current produced by the photovoltaic installation during the electric arc; time integration (E7) of the product of arc voltage values equal to the difference between the voltage values during the arc and the initial voltage, determined in step A), and current values evaluated in step B), in order to determine the energy of the arc.

Abstract: The photovoltaic installation being intended to supply an electric current (i), the method comprises the steps of measuring (e0) values representative of the electric current (i) supplied by the photovoltaic installation; adjusting (e2) a variable current jump threshold (s(ti)) according to measured values; detecting (e3) a current jump with an amplitude greater than a current jump threshold adjusted according to values measured before the jump; and detecting (e5) an electric arc based on the detection of a current jump.

Abstract: Method for detecting an electric arc in a photovoltaic installation, which includes measurement (E6) of voltage values at at least one site of the electrical circuit of the photovoltaic installation; digitization (E8) of the measured voltage values so as to form voltage data; formation (E11) of a window of n recent digitized voltage data; computation (E12) of a test value associated with the said window of the n voltage data; analysis (E13) of a test vector comprising m test values associated with m recent windows generating a quantity arising from this analysis representative of a risk of electric arc; comparison (E15) of this quantity arising with at least one threshold so as to deduce therefrom the presence or otherwise of an electric arc within the photovoltaic installation.

Abstract: A trippable control system for one or more electrical breaker poles includes a first link pivotable about a first pivot point between first and second positions; a second link pivotable about a pivot axis for connecting to one or more breaker poles, whereby movement of the first link causes the second link to pivot about the pivot axis between a position for opening and a position for closing the breaker pole(s); and a trip mechanism suitable for releasing the first pivot point and for exerting a movement force on the first link to move the first link between the second and third positions when the first link pivots about a second pivot point. Movement of the first link between the second and third positions causes the second link to pivot about the pivot axis between the position for closing the breaker pole(s) and the position for opening the breaker gear.

Abstract: An accumulator control system for one or more electrical breaker poles includes an accumulator mechanism presenting a control handle movable at least between breaking and closing positions; a first link connected to the outer carriage and pivoting about a first pivot point between first and second positions, by actuating the control handle of the accumulator mechanism between the breaking and closing positions; a second link pivotable about a pivot axis and connected to the first link by a sliding connection so that the movement of the first link, between the second and first positions, causes the second link to pivot about the pivot axis between a position for closing one or more breaker poles, and a position for opening one or more breaker poles. The control system is further configured to exert an additional pivoting force on the second link when the control handle is actuated beyond the breaking position.

Abstract: Equipment (1) for measuring the energy consumption of branches (11-N) of an electrical network (10) which comprises a single voltages measuring device (2) connected upstream of the branches of the network so as to measure the voltages of the network in a centralized manner, and several dedicated current measuring devices (3) connected to each branch of the network so as to measure the currents on the branches of the network. The measuring devices (2, 3) are connected by network cable (6) allowing digital communication of the voltage measurements to the current measuring devices (3), which comprises a processing unit (33) for calculating the energy consumption of the analyzed branch of the network. The voltage and current measurements are performed by sampling, and the sampling frequencies are compared and adjusted automatically so as to synchronize the current samples with the voltage samples.

Abstract: A measuring device (10) comprising a current sensor (20) and a measuring unit (40) connected to each other by a connection cable (50). The connection cable (50) comprises three pairs of conductors of which a first measurement pair (51) is arranged to transmit a signal representative of the current measured by the sensor (20), a second power supply pair (52) is arranged to power electrically the sensor (20) and the measuring unit (40), and a third communication pair (53) is arranged to transmit at least one complementary signal between the sensor (20) and the measuring unit (40), such as an identification feature of the sensor allows the measuring unit to recognize automatically the sensor and provide an exploitable correlated value of the current measured by the sensor (20).

Abstract: An electric arc breaker device comprises a contact zone in which there are present at least one stationary contact and at least one movable contact that is movable relative to the stationary contact. The contacts are capable of being put into contact with each other and of being separated from each other. An arcing horn is present facing the stationary contact, the height hc of the arcing horn being greater than or equal to the height ht of the stationary contact, and the arcing horn presenting a folded-back arc switching portion extending in a direction away from the stationary contact.

Abstract: An electrical switching device (1) which comprises at least one double breaking pole provided with two fixed contacts (3, 4) that cooperate with two moving contacts (5, 6) arranged so as to move in a breaking plane (P) and define, with every fixed contact, a breaking zone. The device comprises a permanent magnet (11, 12) housed in an insulating holder arranged in the immediate environment, next to each breaking zone, symmetrically with respect to the breaking plane and oriented so as to generate a magnetic excitation vector parallel to the breaking plane (P) so that the induced electromagnetic force (FE) moves and stretches every electric arc (E1, E2), generated when opening the electrical circuit, in a direction perpendicular to the breaking plane (P), leading to the extinction of the electric arc regardless of the polarity of the magnet and/or of the current.

Abstract: Method for detecting an electric arc in a photovoltaic installation, which includes measurement (E6) of voltage values at at least one site of the electrical circuit of the photovoltaic installation; digitization (E8) of the measured voltage values so as to form voltage data; formation (E11) of a window of n recent digitized voltage data; computation (E12) of a test value associated with the said window of the n voltage data; analysis (E13) of a test vector comprising m test values associated with m recent windows generating a quantity arising from this analysis representative of a risk of electric arc; comparison (E15) of this quantity arising with at least one threshold so as to deduce therefrom the presence or otherwise of an electric arc within the photovoltaic installation.

Abstract: An electrical cut-off device (1) with a single cut-off which comprises fuse boxes (5) that are each provided with a fuse (50) connected in series with the single cut-off element. The fuse box is a separate element mounted onto the electrical cut-off device and comprises a handle (55) that is movable, relative to the electrical cut-off device, into a passive position where the fuse box is connected to the electrical cut-off device but not locked, the electrical cut-off device being in an open position, an active position wherein the fuse box is connected and locked to the electrical cut-off device, the electrical cut-off device is switchable between open and closed positions and an intermediate position where the fuse box is partially removed from the electrical cut-off device and forms a disconnected position.

Abstract: A moving contact-carrying carriage (8) for an electrical cut-off device which comprises several seats (80) arranged for receiving several parallel moving contacts (5A-5C) offset in space, and each of them is associated with a return mechanism (65). The carriage can be coupled with an actuator mechanism (6) of the device. The carriage (8) comprises an insulating support (81) which has parallel seats (80) and a supporting structure (9), surrounding the insulating support (81), for forming a load-absorbing belt therearound. In order to couple the carriage (8) with the actuator mechanism, the supporting structure (9) comprises a connecting part (91) positioned in a front section of the insulating support (81) and passing through the central seat (80) and resting against the central moving contact (5A), on a side opposite to the return mechanism (65), for directly transmitting driving efforts of the actuator mechanism when opening the electrical circuit.

Abstract: An electrical switching device (1) which comprises at least one double breaking pole provided with two fixed contacts (3, 4) that cooperate with two moving contacts (5, 6) arranged so as to move in a breaking plane (P) and define, with every fixed contact, a breaking zone. The device comprises a permanent magnet (11, 12) housed in an insulating holder arranged in the immediate environment, next to each breaking zone, symmetrically with respect to the breaking plane and oriented so as to generate a magnetic excitation vector parallel to the breaking plane (P) so that the induced electromagnetic force (FE) moves and stretches every electric arc (E1, E2), generated when opening the electrical circuit, in a direction perpendicular to the breaking plane (P), leading to the extinction of the electric arc regardless of the polarity of the magnet and/or of the current.