Abstract: The invention relates to a device for neutralizing an electric switching unit. One or several power poles, each of which is provided with movable contacts separable form fixed contacts are actuatable between opened and closed positions by an actuator for switching-on an electric charge. A mechanical actuating device interacts with the movable contacts. It is used for actuating a device for neutralizing the electric switching unit by switching-off the control electric circuit thereof when the wear degree of pellets is greater than a predetermined threshold. The control circuit is switched-off, for example, by cutting a wire thereof. An electric switching unit is provided with the device.

Abstract: A power generation device that includes an excitation coil with a central opening, and a magnetic circuit extending through the central opening of the coil and including at least one permanent magnet and a plurality of ferromagnetic members arranged in a fixed portion and two mobile portions. The two mobile portions are mounted on two parallel rotary axes and can each assume two positions. The device further includes a mechanism rotating the two mobile portions between the two positions thereof so as to create two states of the magnetic circuit, i.e. a first state in which a magnetic flow flows through the coil in one direction and a second state in which a magnetic flow flows through the coil in the opposite direction.

Abstract: The present invention relates to a stand-alone device for generating electrical energy comprising:—an excitation coil (2) furnished with a central opening, —a magnetic circuit passing through the central opening of the coil and formed of a fixed part (3) and a movable part (5) that can move with respect to the fixed part (3) so as to vary the magnetic flux through the excitation coil (2), characterized in that, —the magnetic circuit passes through the central opening of the excitation coil (2) several times, forming at least one loop. The invention also relates to a remote control device comprising a transmitter coupled to a remote receiver and a stand-alone device (1) for generating electrical energy so as to generate an electric current intended to power its transmitter.

Abstract: An actuator comprising: a fixed part comprising a ferromagnetic yoke and a magnetized assembly mounted on a face of the yoke and extending substantially over the whole dimension of said face parallel to the axis of movement of a moving part, the moving part comprising a ferromagnetic element comprising a first air-gap surface to form a magnetic air-gap of variable thickness and a second air-gap surface parallel to the axis of movement to form a residual magnetic air-gap of constant thickness with a corresponding air-gap surface of the magnetized assembly. an excitation coil. An electric switch apparatus equipped with the actuator.

Abstract: An electronic control device for a switch unit, which includes an electromagnetic actuator having a control coil powered by an excitation current for closing a power electrical circuit. The electronic control device includes a storage unit for storing at least one coil control profile which contains a plurality of values representative of the excitation current as a function of respective points of time. A drive unit is connected to the storage unit, and receives at its input an external close command and controls at its output the excitation current at respective points of time from the receipt of the external close command to follow the plurality of excitation current values of said control profile during the closing of the power circuit. The drive unit operates in open loop mode, without using information relating to the switch unit that includes at least a measurement of an excitation current at the control coil.

Abstract: A power generation device that includes an excitation coil with a central opening, and a magnetic circuit extending through the central opening of the coil and including at least one permanent magnet and a plurality of ferromagnetic members arranged in a fixed portion and two mobile portions. The two mobile portions are mounted on two parallel rotary axes and can each assume two positions. The device further includes a mechanism rotating the two mobile portions between the two positions thereof so as to create two states of the magnetic circuit, i.e. a first state in which a magnetic flow flows through the coil in one direction and a second state in which a magnetic flow flows through the coil in the opposite direction.

Abstract: An actuator comprising: a fixed part comprising a ferromagnetic yoke and a magnetized assembly mounted on a face of the yoke and extending substantially over the whole dimension of said face parallel to the axis of movement of a moving part, the moving part comprising a ferromagnetic element comprising a first air-gap surface to form a magnetic air-gap of variable thickness and a second air-gap surface parallel to the axis of movement to form a residual magnetic air-gap of constant thickness with a corresponding air-gap surface of the magnetized assembly. an excitation coil. An electric switch apparatus equipped with the actuator.

Abstract: The invention relates to a device for neutralising an electric switching unit comprising one or several power poles, each of which is provided with movable contacts (2) separable form fixed contacts (3) and actuatable between opened and closed positions by an actuator for switching-on an electric charge. The inventive device comprises mechanical actuating means which interact with the movable contacts (2) and are used for actuating means for neutralising the electric switching unit by switching-off the control electric circuit (50) thereof when the wear degree of pellets (20, 30) is greater than a predetermined threshold. The of control circuit is switched-off, for example, by cutting the wire (5) thereof. An electric switching unit provided with said device is also disclosed.

Abstract: The present invention relates to a stand-alone device for generating electrical energy comprising:—an excitation coil (2) furnished with a central opening, —a magnetic circuit passing through the central opening of the coil and formed of a fixed part (3) and a movable part (5) that can move with respect to the fixed part (3) so as to vary the magnetic flux through the excitation coil (2), characterized in that, —the magnetic circuit passes through the central opening of the excitation coil (2) several times, forming at least one loop. The invention also relates to a remote control device comprising a transmitter coupled to a remote receiver and a stand-alone device (1) for generating electrical energy so as to generate an electric current intended to power its transmitter.

Abstract: The invention relates to an electronic control device for a switch unit (10), which comprises an electromagnetic actuator having a control coil (15) powered by an excitation current (26) for closing a power electrical circuit. The control device (20) comprises a unit (22) for storing at least one control profile giving a plurality of values of the excitation current varying as a function of time, and a drive unit (21) receiving at its input an external close command (25) and delivering at its output the said excitation current (26) following the said control profile during the closing of the power circuit.

Abstract: An electric switching device of which each power pole includes a movable bridge equipped with at least one movable contact that co-operates with at least one fixed contact of the pole between open and closed positions. The switching device includes at least one approach actuator—bistable or of Voice Coil type—acting on the movable bridges to distance and bring together the movable contacts of the movable bridges and the fixed contacts. Each pole includes a force actuator, e.g., piezoelectric, to establish contact pressure or contact switching, without the use of a mechanical restoring device.

Abstract: An electric switching device of which each power pole includes a movable bridge equipped with at least one movable contact that co-operates with at least one fixed contact of the pole between open and closed positions. The switching device includes at least one approach actuator—bistable or of Voice Coil type—acting on the movable bridges to distance and bring together the movable contacts of the movable bridges and the fixed contacts. Each pole includes a force actuator, e.g., piezoelectric, to establish contact pressure or contact switching, without the use of a mechanical restoring device.

Abstract: The invention provides a device for controlling an electromagnet having a coil (L) connected to a monoarch periodic current supply source, through a controllable switch (TH). This switch (TH) is controlled by a control circuit comprising a member for detecting the zero cross-over times of the voltage of the source (R.sub.3, D.sub.4, IN.sub.1, R.sub.4, C.sub.3) and a switching device (FC) controlled by said detection member for delivering a closure signal to the switch (TH) following detection of a zero cross-over time which follows the order for controlling energization of the coil (L). The invention applies particularly to contactors and electromagnetic valves.

Abstract: A bistable polarized electromagnet is provided having a mobile armature with a permanent magnet and pole pieces which cooperate with a fixed yoke through two pairs of air gaps for each of which one is variable whereas the other is substantially constant. This electromagnet may further have asymmetric or symmetric forms of revolution for easy replacement of the excitation coil.

Abstract: A circuit breaker is provided with at least one switching arrangement having a mobile contact and a retractable contact, this latter being supported by a pivoting lever; a tripping mechanism for causing the rapid opening of the mobile contact, an electromagnetic actuator having an element movable in translation under the effect of a control signal applied to the actuator and a mechanical coupling for transmitting the movement of the mobile element to the retractable contact, wherein the mechanical coupling is rigid and moves in translation according to a translation plane parallel to the movement of the mobile element and it is coupled to said pivoting lever at a point offset with respect to the plane of translation.

Abstract: A circuit breaker is provided with at least one switching arrangement having a mobile contact and a retractable contact, this latter being supported by a pivoting lever; a tripping mechanism for causing rapid opening of the mobile contact, an electromagnetic actuator having an element movable in translation under the effect of a control signal applied to the actuator and a mechanical coupling element for transmitting the movement of the mobile element to the retractable contact, wherein the mechanical coupling element, rigid and movable in translation parallel to the axis of displacement of the mobile element, is coupled to one end of the pivoting lever and, at its opposite contact end, the pivoting lever has an arm bent so that an end portion of substantial length of the arm is substantially parallel to the opposite arm of the corresponding mobile contact lever, the pivoting axis of the pivoting lever being placed between its bend and the coupling end.

Abstract: A DC current electromagnet is provided developing a high pulling force with reduced current consumption. This electromagnet has the form of a cylindrical pot and comprises a mobile armature which slides along a yoke piece through a closure air gap --e, S--, whose reluctance is low with respect to the reluctance of the working air gap --E, s-- when this latter is open and substantially constant during movement.