Abstract: A disconnecting electrical apparatus includes a disconnecting block, including elements for disconnecting an electric current each able to be actuated with a coupling member, to switch this disconnecting element to a blocking state or a state allowing the electric current to pass, an actuator block, provided with a controllable electromagnet suitable for generating an electromagnetic force, a mobile container provided with a magnetic plate, which displaces the coupling members, under the effect of the electromagnetic force, so as to switch the disconnecting elements. The apparatus also includes a connection interface inserted between the disconnecting block and the actuator block, the mobile container being housed inside the connection interface.

Abstract: A control method brakes an electric motor connected to a voltage source. The method involves, in each cycle, the supply of current to the motor, with a delay tret, at an angle ?. The method includes a sequence such that, for every n cycle, the following steps are executed: a) determining the value of a variation in the resistance of the motor during the preceding n cycles of the voltage, b) comparing the value of the variation in resistance with a threshold resistance value Rt, c) increasing in the delay tret if the value of the variation in resistance is lower than the threshold resistance value. The increase in the delay tret is executed in accordance with a gamma command, where the angle ? lies between 50° and 80°.

Abstract: According to one aspect, embodiments herein provide a bidirectional converter comprising a first interface, an input bridge coupled to the first interface, an inverter portion coupled to the input bridge and comprising a first bidirectional converter, a second bidirectional converter, and an output filter coupled to the first bidirectional converter and the second bidirectional converter, a second interface coupled to the output filter, and a controller configured to operate the input bridge to draw DC power from a DC source and provide power to the inverter portion, to operate, in a first mode, the first bidirectional converter, in conjunction with the output filter, to generate a positive half cycle of an output voltage waveform at the second interface, and to operate, in a second mode, the second bidirectional converter, in conjunction with the output filter, to generate a negative half cycle of the output voltage waveform at the second interface.

Abstract: A differential electrical protection device D including N-1 phase conductors, each phase conductor including, between an input, or upper, connection land and an output, or lower, connection land, a portion able to pass through a torus and a portion able to pass through a current measurement and supply sensor, the input connection lands being situated in a first plane P1, and the output connection lands extending in a second plane P2, in that the supply and measurement sensors of the N?1 phase conductors are each positioned in the space situated between the two planes P1,P2, and wherein it includes an additional phase conductor including an input connection land and an output connection land, a portion able to pass through the torus and a portion able to pass through an additional measurement sensor only measuring the current, this additional measurement sensor being of small size and being positioned directly above the torus in such a way that the assembly formed by the torus and the additional sensor is situ

Abstract: An extinguishing gas filtering device for an electric current switchgear with separable contacts, including an electric arc extinguishing chamber, includes, assembled together an inlet part for the extinguishing gases, made of a metal material and including an inlet aperture intended to be fluidically connected with an extinguishing gas outlet of the switchgear; an outlet aperture; a flared wall extending between the inlet and outlet apertures; a gas diffuser, which covers the outlet aperture, being planar in shape and including through-apertures; a filter made of porous metal foam, placed at the output of the gas diffuser.

Abstract: A controllable electric current switchgear includes a bistable relay including separable electrical contacts and an excitation coil for switching the contacts between open and closed states when the coil receives an amount of energy that is higher than a predefined excitation energy threshold with an electrical power that is higher than a predefined power threshold; and a control circuit including a power stage and a logic stage for triggering the switching of the relay. The power stage includes a power converter, a first set of capacitors connected at the input of the converter and a second set of capacitors connected at the output of the converter, the nominal power of the converter being strictly lower than the power threshold, the sets of capacitors being capable of storing an amount of energy that is higher than or equal to 50% of the excitation energy threshold.

Abstract: An electrical device for supplying electrical power to multiple power units includes a first module, including an electrical circuit breaker; a second, removable module, including a control circuit, programmed to trip the circuit breaker depending on values of the electric current that is flowing through power lines; a connection interface provided with output connectors that are connected to the power lines; removable elements, each containing an item of electrical equipment that is intended to be connected to an electrical power unit and to one of the power lines by the output connectors, the control circuit being connected to an interface for controlling each removable element via a data link by virtue of the connection interface.

Abstract: Systems and methods for securing configuration information for cloud-based services. A system comprises a data store and data sets including plant process information and configuration information. A memory device stores computer-executable instructions. When executed by a processor coupled to the cloud service, the instructions receive configuration information, store it in a data file, apply a generated certificate to the file, and deploy the resulting protected configuration data file to the cloud-based service. In addition, the protected configuration data file is made available by obtaining the file from the cloud-based service.

Abstract: An air circuit breaker includes two separable electrical contacts connected to electric current input and output terminals; and a chamber for quenching an electric arc, including a stack of splitter plates that are spaced apart from one another, and lateral walls placed on either side of the stack and including a thermosetting-resin impregnated polyamide woven and being devoid of glass fibres. The quenching chamber furthermore includes protective elements made of crosslinked polyamide, the elements being placed in junction zones between the lateral walls and holding plates, the protective elements covering corners of the splitter plates, which corners are adjacent to the lateral walls, so as to separate these corners of the splitter plates from the electrical contacts.

Abstract: The invention relates to a secure electrical supply system for powering an electrical load (3) comprising: a main electrical power supply source (1), an electrical power supply circuit (8) linking the main electrical power supply source (1) to the electrical load, at least one control unit (5) for opening or closing said electrical power supply circuit (8), a secondary electrical power supply source (2) connected to the electrical power supply circuit and designed to power the electrical load (3) in case of interruption of the electrical power supply provided by the main electrical power supply source (1), a control device (6) comprising an emitter device (60) designed to dispatch a message representative of a change of state of the control unit (5) and a receiver device (61) designed to receive said message and to control the turning on or the turning off of said secondary electrical power supply source (2) according to the new state taken by the control unit (5).

Abstract: An electrical switching device including an input connection land, an output connection land, and a connection member that is capable of switching between a closed position allowing an electric current to flow between the input and output connection lands and an open position preventing the flow of the current between the input and output connection lands. The electrical switching device includes an accelerometer that is capable of measuring a component of an acceleration of the switching device when switching the connection member between the closed and open positions and a control configured to estimate, on the basis of an acceleration measurement signal delivered by the accelerometer, a duration of switching of the connection member between the closed and open positions, and to determine wear on the switching device on the basis of the estimated switching duration.

Abstract: The disclosed methods and systems employ a nonprobability-based detection scheme that measures conditions (e.g., voltage or current) at multiple locations on a circuit, such as a branch circuit, to detect for a presence of an arc fault condition. A centralized processing system, such as a controller (120), receives information corresponding to a branch origin voltage or current measurement sensed by a sensor (114, 116) at a branch origin upstream of the plurality of end-use devices (150) on the branch circuit (e.g. at a circuit breaker defining the branch), and receives information corresponding to a downstream voltage or current measurement at each of the end-use devices sensed by a corresponding downstream sensor (152, 154).

Abstract: A method for determining a mean time to failure of an electrical device, and a method for adjusting a predetermined mean time to failure of an electrical power supply and for evaluating the adjusted mean time to failure. The method determines the mean time to failure by taking into account both operating conditions and operational load.

Abstract: An electrical connection terminal between two conductive elements includes at least one tightening screw, including a head and a thread, a stirrup, mounted around each screw, between the head and the thread of the screw, and a connector for each screw. Each connector includes a first stage, delimiting a tapping for receiving the tightening screw, and a second stage, arranged between the first stage and the stirrup and including a hole for passage of the screw, aligned with the tapping, the first stage being mobile relative to the second stage parallel to an axis of the screw. The terminal also includes a recess for receiving a first conductive element between the two stages of the connector, and a recess for receiving a second conductive element between the stirrup and the connector.

Abstract: A method and a system of control of power consumption of communications between electrical modules of an electrical infrastructure, including a star-shaped communication network between a central module, or master module, and a set of slave modules, the master module being set up to be connected to the slave modules by non-wireline communications links in a star pattern, and a processing circuit set up to regulate the power levels of communications links at least in a direction of reception by the master module from at least one slave module or by at least one slave module from the master module.

Abstract: A vortex flowmeter for measuring a flow rate of a fluid has a flowtube and a bluff body positioned in the flowtube for shedding vortices in the fluid when the fluid flows through the flowtube. A sensor is positioned to detect the vortices. A cleaning port is positioned to allow a stream of fluid to be directed into the flowtube through the cleaning port toward the sensor for cleaning material away from the sensor. A method of cleaning the vortex flowmeter includes injecting a fluid into the vortex flowmeter toward the sensor through the cleaning port.

Abstract: An electromagnetic flowmeter has a flowtube configured to carry a conductive fluid. The flowtube has wall made of a conductive material. The wall has an inner surface surrounding a fluid flow path for the fluid. A non-conductive liner is positioned to electrically insulate the flowtube wall from the fluid. The flowtube and non-conductive liner define an electrode mounting hole. An electrode extends through the electrode mounting hole. The electrode and the non-conductive liner form a fluidic seal between the electrode mounting hole and the fluid flow path. At least a portion of the electrode is arranged in fluid communication with the flowtube within the electrode mounting hole. A short circuit detector can detect failure of the seal when conductive fluid that has leaked past the seal creates a short circuit as a result of the fluid communication between the flowtube and the electrode mounting hole.

Abstract: A DC electrical circuit breaker includes first and second movable electrical contacts. The circuit breaker includes a magnetic circuit including a magnet and generating a magnetic field able to guide an electrical arc in the direction of a quenching chamber, and having for this purpose curved field lines extending perpendicularly to opposite lateral walls of an electrical arc formation chamber, these field lines converging, in a central region of the arc formation chamber containing the contact zones, toward the quenching chamber while extending parallel to the longitudinal plane.

Abstract: In an electromagnetically controlled actuator of an electrical contactor, switching is done by the actuator with a set of fixed contacts and a set of movable contacts. The movable contacts are carried on a movable contact carrier. The movable contact carrier is coupled to and driven by an armature surrounded by a coil. The armature carries a coupling shaft, and the coupling shaft carries at least part of a bistable coupling mechanism which joins the armature to the movable contact carrier and allows the movable contact carrier and armature to keep the fixed and movable contacts separated when a short circuit current creates a contact welding situation.

Abstract: The present invention provides method, apparatus, and computer readable storage medium for an electrical islanding detection. The method for electrical islanding detection method includes: receiving a three-phase voltage in an electrical power system; for the three-voltage voltage, calculating a voltage angle sudden-change of each phase, respectively; determining whether an absolute value of the voltage angle sudden-change of each phase is greater than a first angle sudden-change setting value; determining whether directions of the voltage angle sudden-changes of three phase are the same if the absolute value of the voltage angle sudden-change of each phase is greater than the first angle sudden-change setting value; and determining that the electrical islanding appears if the directions of the voltage angle sudden-changes of the three phases are the same.