Abstract: A modular switchboard provides an adjustable length bus bridge for electrically connecting two adjacent switchboards, where the length of the bus bridge can be adjusted on site if needed. The bus bridge comprises a first set of busbars, each being electrically insulated from one another, and a second set of busbars, each being electrically insulated from one another. The first and second sets of busbars are arranged such that the busbars in the first set of busbars and the busbars in the second set of busbars are slidable relative to one another to adjust a length of the bus bridge. A longitudinal slot is formed in each busbar in either the first or the second set of busbars, or both, to accommodate a through bolt in the bus bridge when the first and second set of busbars slide relative to one another.

Abstract: A method for diagnosing an operating state of a switching device including separable contacts, which are driven by an electromagnetic actuator including a coil connected to an electronic control device, and sensors, which are configured to measure an intensity of a coil current and a coil voltage. The method comprises: a) receiving an order to close via the electronic control device; b) controlling the electromagnetic actuator so that it closes; c) measuring and recording the coil voltage and coil current values; d) calculating and recording values of a magnetic flux through the coil, by integrating the recorded values of the coil current, the coil voltage and resistance and inductance values of the coil; and e) evaluating and recording positions of a core of the electromagnetic actuator according to a data table, which is previously recorded in the electronic control device and which defines a bijective relation between the position of the core, the magnetic flux and the coil current.

Abstract: A method for diagnosing an operating state of a switching device including separable contacts, which are driven by an electromagnetic actuator including a coil connected to an electronic control device, and sensors that measure a coil voltage and an intensity of a coil current. The method includes: a) receiving an order to open the switching device via the electronic control device; b) controlling the electromagnetic actuator so that it opens; c) measuring and recording the coil voltage and coil current values d) calculating and recording values of a magnetic flux through the coil, by integrating the recorded values of the coil current, the coil voltage and resistance and inductance values of the coil; and e) evaluating and recording positions of a core of the electromagnetic actuator according to a data table, which defines a bijective relation between the position of the core, the magnetic flux and the coil current.

Abstract: An extension handle assembly includes: a housing; a handle driving the knob to rotate from a first position to a second position during a manual tripping period of a motor protection circuit breaker and drives the handle to rotate from the first position to a third position during a fault tripping; a stopper configured to abut against the handle upon the handle rotating from the first position to the second position during the manual tripping period, to provide a stopping force for a rotation of the handle to increase a force required for the rotation of the handle from the first position to the second position; and configured not to abut against the handle upon the handle rotating from the first position to the third position during the fault tripping period, not to provide a stopping force for the rotation of the handle.

Abstract: The present heat-sensitive material is a heat-injectable and electrically insulating material, the heat-sensitive material including a polymer matrix, made of a thermoplastic polymer material or of a thermoplastic elastomer, a plasticizer, having a molar weight (M), and a filler in the form of particles, in particular carbon black. The molar weight (M) of the plasticizer is chosen according to a first predetermined temperature threshold (Ti), such that the heat-sensitive material is configured to release volatile species from the heated plasticizer and filler particles entrained by the plasticizer when the heat-sensitive material is subjected to a temperature higher than the first temperature threshold (Ti), said volatile species from the plasticizer and filler particles being detectable by a detection device.

Abstract: This invention relates to an electrical connection device between an electrically conductive member (4A) and a terminal block (6) of an electrical unit (3). The connection device comprises a nut (23A), adapted to receive a screw (21A) which, by screwing, clamps together the electrically conductive member and the terminal block, pressing them against the nut, a core (25A), which is thermally conductive and which is bonded to the nut so as to transfer heat by conduction between the nut and the core, and a support (27A) which supports the nut and the core so as both to hold the nut securely in position and to transfer heat by conduction between the core and the support. The support is made of a material that emits a release containing microparticles and/or at least one gaseous compound when that material is heated above a predetermined temperature threshold.

Abstract: A method for detecting a structural fault of an electric motor. The method includes: (i) acquiring a measurement signal of a physical parameter representative of the rotation of the electric motor, (ii) obtaining the high frequency component of the measurement signal, resulting in a corrected signal, (iii) applying a set of band-pass filters to the corrected signal resulting in a set of filtered corrected signals, (iv) determining a stator frequency and a rotor frequency, (v) computing a frequency signature vector, (vi) computing a temporal symptom vector from the frequency signature vector and the set of filtered corrected signals, and (vii) detecting a structural fault of the electric motor from the determined temporal symptom vector and from a classifier model.

Abstract: One exemplary embodiment relates to an installation and a method for processing ophthalmic lenses, with several processing devices for processing the lenses. The embodiment includes a conveying device connecting the processing devices for transporting lens carriers to and from the processing devices, and with a transfer device for changing transport tracks as required. According to the embodiment, it is provided that the processing devices are arranged in front of the first transport track and that the transfer device is designed as a pushing device with a fork-shaped guide device which guides the lens carriers laterally and in the direction of conveyance.

Abstract: A transmitter module, a receiver module and a communication system for exchanging Ethernet Medium Access Control (MAC) frames on a single Multipoint Low Voltage Differential Signaling (M-LVDS) line. The transmitter module includes: a first transmitter media-independent interface (MII) including parallel data lines for receiving bits of an Ethernet MAC frame to be transmitted on the single M-LVDS line: an 8b/10b encoding unit adapted to encode 8-bit words to produce 10-bit words, wherein the 8-bit words include bits of the Ethernet MAC frame received on the parallel data lines of the first transmitter MII; a serializing unit adapted to serialize the 10-bits words; and an M-LVDS transmitter unit for transmitting the serialized 10-bit words on the single M-LVDS line.

Abstract: Embodiments described herein provide techniques for securely validating firmware on a device using certificates and providing a mechanism for deprecating select certificates when a traditional certificate authority is unavailable or otherwise cannot be used. When a first firmware package is installed on the device, a first certificate in a first secure memory location is associated with an active status. Responsive to validation and installation of a second firmware package on the device, a second certificate in a second secure memory location on the device is associated with an active status. During a boot-up operation on the device, embodiments determine to use the second certificate to validate the second firmware package by starting at a predefined secure memory location and scanning backwards until a status of active is identified. The second firmware package on the device is then validated using the second certificate.

Abstract: An electrical protection device (10) that includes a mechanical switch (12), a static switch (14), an acquisition module (20) including a current intensity sensor (22) configured so as to measure the intensity of the current and to determine a derivative with respect to time (time derivative) of the current intensity; and an electronic control unit (30), configured so as to determine a first value of an estimated peak current intensity, and to command the switching of the mechanical switch (12) to the open configuration when the first value of the estimated peak current intensity is greater than or equal to a peak current intensity threshold value.

Abstract: Embodiments described herein provide techniques for securely validating firmware on a device using keys and providing a mechanism for deprecating such keys when a traditional certificate authority is unavailable or otherwise cannot be used. When a first firmware package is installed on the device, a first public key in a first secure memory key location is associated with an active status. Responsive to installation of a second firmware package on the device, a second public key in a second secure memory key location on the device is associated with an active status. During a boot-up operation on the device, embodiments determine to use the second public key to validate the second firmware package by starting at a predefined secure memory key location and scanning backwards until a status of active is identified. The second firmware package on the device is then validated using the second public key.

Abstract: A reverse wiring self-protection circuit is disclosed, including an auxiliary power module configured to provide tripping electric energy for tripping the solid-state circuit breaker to a tripping coil of the solid-state circuit breaker before an isolating switch of the solid-state circuit breaker is closed; a reverse wiring determination module configured to determine whether DC power connected to the solid-state circuit breaker is reversely wired, and output a first driving enable signal enabling a driving circuit module in response to reverse wiring of the DC power; the driving circuit module is configured to, transmit a driving signal indicating tripping operation to the tripping coil, in response to the first driving enable signal. The reverse wiring self-protection circuit according to the present disclosure can protect the elements included in the solid-state circuit breaker itself and improve the personal safety of the DC system to which the solid-state circuit breaker is connected.

Abstract: There is provided a quick automatic transfer switch device and an operating method thereof, including: a first power source input end; a second power source input end; output end; a first switch element coupled between the first power source input end and a third switch element; a second switch element coupled between the second power source input end and the third switch element; the third switch element coupled between the first and second switch elements and the output end; a fourth switch element coupled with the first power source input end and the second power source input end and coupled to a power source transfer circuit; the power source transfer circuit coupled with the fourth switch element and the output end; and a control circuit.

Abstract: The present disclosure provides a solid state breaker and a power supply system. The breaker includes: a first port and a second port configured to connect a first external system; a third port and a fourth port configured to connect a second external system; a first electronic switch connected between the first port and the third port; a second electronic switch connected between the second port and the fourth port; and a control unit configured to control the first electronic switch and the second electronic switch to be turned off in a case of detecting an electricity leakage occurs in the second external system. The breaker is provided with electronic switches at both poles, so that it can provide effective protection for the human body by quickly turning off the electronic switches provided at both poles, in a case of an electricity leakage of the prosumer to the ground.

Abstract: A solid-state circuit breaker, including a first switch, a second switch, a first capacitor, and a first diode, wherein, a first terminal of the first switch is connected to a positive electrode of an input terminal, a second terminal of the first switch is connected to a first terminal of the second switch, a second terminal of the second switch is connected to a positive electrode of an output terminal, a first terminal of the first capacitor is connected to the first terminal of the second switch, a second terminal of the first capacitor is connected to a negative electrode of the input terminal, a cathode of the first diode is connected to the second terminal of the second switch, and an anode of the first diode is connected to a negative electrode of the output terminal.

Abstract: A method is provided for temporarily enabling functionality of a secure device. The method includes storing public keys for respective trusted devices of at least one trusted device, storing device-unique data that is unique for the secure device, generating a unique hashed-based message authentication code (HMAC) key, computing, based on the HMAC key and the device-unique data, a unique HMAC, transmitting the HMAC to a trusted device of the at least one trusted device, receiving a signed HMAC from the trusted device, wherein the signed HMAC is the HMAC as signed by the trusted device using a private key of the trusted device, decrypting the signed HMAC using the public key for the trusted device, comparing the decrypted signed HMAC to the HMAC, and enabling functionality of the secure device based on a result of the comparison.

Abstract: The present disclosure provides an electrical device, including: a first sub-mechanism, capable of switching between an electrically conductive state and an electrically isolated state; a second sub-mechanism, capable of switching between an electrically conductive state and an electrically isolated state; when one of the first sub-mechanism and the second sub-mechanism is electrically isolated, the other of the first sub-mechanism and the second sub-mechanism is electrically conductive.

Abstract: A breaking module for a medium or high voltage switchgear. The breaking module includes a vacuum interrupter including a housing forming an enclosure in which a first electrical contact and a second electrical contact are disposed, the first and the second electrical contacts being configured to be moved relatively to each other between an open position and a closed position. The breaking module further includes a support frame; a first bracket fixed to the support frame and including a first radial abutment surface configured for receiving the vacuum interrupter housing; and a second bracket fixed to the first bracket, the second bracket including a second radial abutment surface configured for receiving the vacuum interrupter housing. The breaking module may be integrated in a circuit breaker.

Abstract: A computer-implemented method for controlling a ramp-up of a voltage in a DC-link, a computer-readable storage medium, a variable speed drive, and a system including a variable speed drive configured to carry out the method.