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: An electrical connection device for an electrical apparatus includes a connection pad and two attachment flanges arranged on either side of the connection pad. The attachment flanges and the connection pad include opposing cavities for delimiting four recesses capable of receiving at most four conductors. A pass-through clamping mechanism, formed by two lateral tie rods and a central rod, passes through the assembly constituted by superposition of the attachment flanges and the connection pad. The lateral tie rods include a support abutment arranged between the connection pad and one of the attachment flanges so that it is possible to differentiate the tightening, recess by recess, facilitating the placing of the conductors, the conductors being able to have different diameters.

Abstract: An electrical connection device for an electrical apparatus includes a connection pad and two attachment flanges arranged on either side of the connection pad. The attachment flanges and the connection pad include opposing cavities for delimiting four recesses capable of receiving at most four conductors. A pass-through clamping mechanism, formed by two lateral tie rods and a central rod, passes through the assembly constituted by superposition of the attachment flanges and the connection pad. The lateral tie rods include a support abutment arranged between the connection pad and one of the attachment flanges so that it is possible to differentiate the tightening, recess by recess, facilitating the placing of the conductors, the conductors being able to have different diameters.

Abstract: A method for detecting the open or closed state of a protection appliance in an electrical installation including a voltage detector upstream of the protection appliance and a voltage detector downstream thereof, in which the voltage data provided by the voltage detectors is used to obtain information regarding the presence or absence of voltage upstream and downstream of the protection appliance, a correlation is established between the voltage data, and it is determined whether the protection appliance is in an open state, in a closed state, in an abnormal state or in an undetermined state. The current data provided by the current detectors can also be used to determine the cause of the tripping of the protection appliance, and to thereby obtain a full, precise and real-time diagnostic for the operation of the electrical installation.

Abstract: A method for regulating a converter to autonomously stabilize the frequency of a microgrid comprising a generating set, the method comprising: a determination of a power regulation variable from a power variation resulting from the initial power setpoint from which the estimated active power and the active damping value have been subtracted, a calculation of a second power variation at least from the difference between the power regulation variable and the estimated active power, and a determination of a frequency command value for commanding the converter from the second power variation, a reception of a frequency value characteristic of a load variation of said microgrid to which the converter is intended to be connected, and a determination of an active damping value from the received frequency value.

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: A modular electrical switching device (1A) obtained by juxtaposing a control module (10) and a switching module (20), each comprising a mechanism that rotates about a rotation axis (A), coupled together by complementary coupling end pieces (11, 12; 21, 22). The control module (10) is designed to be controlled by a control rod (3) as well by a front control through a front entry opening (30) provided on the front side of the control module (10) as by left or right side control through two side entry openings (34, 35) provided on the sides of the control module (10), respecting a same direction of operation. The coupling end pieces (11, 12) of the control module (10) are provided on separated male (110) and female (120) coupling parts inserted between the modules (10, 20), when they are juxtaposed to form the switching device (1A).

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 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 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 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.