Abstract: A discharge device for discharging electrostatic charges from a shaft includes a frame support having a first leg and a second leg and a contact strand for forming a contact surface with the shaft, a first end of the contact strand being clamped on the first leg and a second end of the contact strand being mounted so as to be displaceable on the second leg, a receiving means which is disposed on the frame support, the second end of the contact strand extending at least partly into the receiving means, and a switch, in particular a reed switch, which is disposed in the receiving means or in the contact strand and which is configured so as to be activated as a result of a displacement of the second end of the contact strand, said second end extending at least partly into the receiving means.

Abstract: The present disclosure relates generally to an overvoltage protection assembly, and an electrode useable in pairs in such an overvoltage protection device. In various aspects, at least one electrode is made from a single piece of conductive source material to ensure its strength, reliability, and ease of manufacture. Still further, the electrode has a specific geometry selected to enhance electromagnetic effects experienced during high voltage, high current overvoltage events in a way that quickly relocates and dissipates an arc formed at a gap between an electrode pair, to ensure repeatable, reliable performance of the overvoltage protection device.

Abstract: A system includes a vehicle including a motive electrical power path and at least one auxiliary electrical power path; a power distribution unit having a motive current protection circuit disposed in the motive electrical power path, the motive current protection circuit including a fuse; an auxiliary current protection circuit disposed in each of the at least one auxiliary electrical power path, each auxiliary current protection circuit including an auxiliary fuse; a motive current sensor electrically coupled to the motive electrical power path, where the motive current sensor is configured to provide a motive current value; and at least one auxiliary current sensor, each auxiliary current sensor electrically coupled to one of the at least one auxiliary electrical power path, each auxiliary current sensor configured to provide a corresponding auxiliary current value.

Abstract: This application discloses an overcurrent protection method, an overcurrent protection circuit, and a display device. The overcurrent protection method includes: setting an overcurrent protection value as an overcurrent protection threshold of a current clock signal branch; enabling the overcurrent protection threshold, and controlling to turn off a level shifting circuit; detecting a real-time current of a current clock signal branch in a first substrate row driving circuit; and comparing the real-time current with the overcurrent protection threshold, and when the real-time current is greater than or equal to the overcurrent protection threshold, cutting off a power supply of the current clock signal branch in the first substrate row driving circuit, and enabling overcurrent protection.

Abstract: In at least one embodiment, an apparatus for a vehicle is provided. The apparatus includes a polyswitch and a switching device. The polyswitch includes a first resistance. The switching device is in parallel with the polyswitch. The switching device includes a second resistance that is less than the first resistance. The switching device is configured to enable a first current to flow therethrough when the vehicle is in an active mode. The switching device is configured to enable a first current to flow therethrough to power all electrical loads of the vehicle when the vehicle is in an active mode. The first resistance of the polyswitch is configured to enable a second current that is less than the first current to flow to a portion of the loads when the vehicle is in a sleep mode.

Abstract: A fault detection method is used to determine whether a power switch coupled to a DC bus of a power conversion circuit is faulted. The method includes: detecting a bus voltage to provide a voltage signal and acquiring at least one detection value according to the voltage signal; providing control signals sequentially to turn off or turn on the power switch; determining that the power switch is a short-circuit fault if a first detection value is greater than or equal to a first threshold value when the power switch is turned off; determining that the power switch is an open-circuit fault if a second detection value is less than a second threshold value when the power switch is turned on; and providing an alarm signal or a disable signal when the power switch is the short-circuit fault or the open-circuit fault.

Abstract: Disclosed herein is a substrate support assembly having a ground electrode mesh disposed therein along a side surface of the substrate support assembly. The substrate support assembly has a body. The body has an outer top surface, an outer side surface and an outer bottom surface enclosing an interior of the body. The body has a ground electrode mesh disposed in the interior of the body and adjacent the outer side surface, wherein the ground electrode does not extend through to the outer top surface or the outer side surface.

Abstract: Electrical protection devices, such as for use with power systems for overvoltage protection, are disclosed. One electrical protection device includes a first electrical connection, a second electrical connection, a first electrical discharge device, and a second electrical discharge device. The first electrical discharge device includes a first conductive bus connected to the first electrical connection and a second conductive bus connected to the second electrical connection. The first electrical discharge device has a first breakdown voltage. The second electrical discharge device includes a third conductive bus connected to the first electrical connection and a fourth conductive bus connected to the second electrical connection. The second electrical discharge device has a second breakdown voltage.

Abstract: In one aspect, the application provides an electrical system including a conductor, a ground, an arrester electrically connected to the conductor, and a disconnector assembly electrically connected between the arrester and the ground. The disconnector assembly includes an isolator configured to perform an operating function in response to the occurrence of an event and a housing configured to surround the isolator. The isolator includes a first terminal electrically connected to the arrester by a first wire and a second terminal electrically connected to the ground by a second wire. The housing includes a first opening through which the first terminal extends, a second opening through which the second terminal extends, and a retention mechanism configured to hold the isolator in place relative to the arrester.

Abstract: A triggering circuit and an electronic fuse device incorporating the same. The triggering circuit works with a microcontroller to control a load. The microcontroller has a low-power mode and an external interrupt input for triggering wakeup from the low-power mode and initiating an interrupt action related to the load. The triggering circuit comprises a sensor input for receiving a sensor signal related to the load, a threshold input for receiving a threshold reference signal, and a comparator for comparing the sensor signal to the threshold reference signal and for outputting an interrupt signal to the external interrupt input in response to the comparison.

Abstract: A differential protection method for monitoring a line of a power grid. Current phasor measured values are captured at the ends of the line and transmitted to an evaluation device which is used to form a differential current value with current phasor measured values temporally allocated to one another. Time delay information indicating the time delay between local timers of the measuring devices is used for the temporal allocation of the current phasor measured values captured at different ends, and a fault signal indicating a fault affecting the line is generated if the differential current value exceeds a predefined threshold value. The reliability of the time synchronization is further increased by forming a quotient of the current phasor measured values to form an asymmetry variable, that is used to check a transit time difference of messages transmitted via the communication connection in different directions.

Abstract: A device, a method and a system for monitoring an electrical connection status of a disconnector device are disclosed. The disconnector device is connectable to pole-mounted equipment in a power distribution or transmission grid, thereby disconnecting the pole-mounted equipment. The connection status monitoring device includes a determining section configured to determine whether the disconnector device has been activated and to generate connection status indicator data, indicative of whether the disconnector device has been activated. The determining section further includes a wireless communication section which is adapted to connect to a wireless communication infrastructure using a wireless communication protocol, and to transmit the connection status indicator data over the wireless communication infrastructure.

Abstract: A trailer brake module includes a brake output driver configured to be connected to a power supply, a flyback diode, and a MOSFET arranged between the power supply and the flyback diode. The MOSFET is in series with the flyback diode.

Abstract: A high-voltage relay system for a vehicle is provided. The system includes a relay, a first contact part positioned between a battery and a power converter, a voltage application unit, and a second contact part positioned between the voltage application unit and the ground. A first resistor is connected, at a first end thereof, in series to a second end of the second contact part and connected, at a second end thereof, to the ground. A controller operates the relay in response to an ON/OFF control signal to short-circuit or open the contacts at both ends of the first contact part or the contacts at both ends of the second and determines whether the relay fails based on the type of the ON/OFF control signal and the voltage value between both ends of the first resistor.

Abstract: A switch assembly that is part of a transformer in an underground residential power distribution circuit and that provides fault isolation and restoration. The switch assembly includes first and second switching devices each having an outer housing, a transformer interface electrically coupled to the transformer, a connector interface electrically coupled to a first connector and a first vacuum interrupter having a fixed contact and a movable contact, where the fixed contact is electrically coupled to the connector interface and the movable contact is electrically coupled to the transformer interface. A control board controls the first and second switching devices, where the control board is responsive to voltage signals from capacitors in the first and second switching devices.

Abstract: Disclosed is a voltage reference buffer circuit including a first, second, third, and fourth bias generators and a first, second, third, and fourth driving components. The first, second, third, and fourth bias generators generate bias voltages to control the first, second, third, and fourth driving components respectively. The first, second, third, and fourth driving components are coupled in sequence, wherein the first and second driving components are different types of transistors and jointly output a first reference voltage, the third and fourth driving components are different types of transistors and jointly output a second reference voltage, and the group of the first and second driving components is separated from the group of the third and fourth driving components by a resistance load.

Abstract: A switching device that is part of a transformer in an underground residential power distribution circuit and provides fault isolation and restoration. The switching device includes a transformer interface for coupling the device to the transformer and a connector interface for coupling the device to a connector. The device also includes a vacuum interrupter having a fixed terminal and a movable terminal, where the fixed terminal is electrically coupled to the connector interface and the movable terminal is electrically coupled to the transformer interface. A control rod is coupled to the movable terminal, an actuator assembly is coupled to the control rod and is operable to move the control rod to open and close the vacuum interrupter. A capacitor is electrically coupled to the fixed terminal, and provides an interface for power line communications signals, voltage sensing, help determine power flow direction and help determine the distance to a fault.

Abstract: An apparatus includes a unipolar power transistor and an RC snubber. The RC snubber has a capacitor between a poly silicon structure and a semiconductor substrate. The capacitor has a p-n junction. The RC snubber has a resistor between a source of the unipolar power transistor and a first layer forming the capacitor. The unipolar transistor and the RC snubber are coupled in parallel. The RC snubber and the unipolar power transistor are formed monolithically on the semiconductor substrate.

Abstract: According to one embodiment, an electrostatic chuck includes a ceramic dielectric substrate, a base plate, and first and second electrode layers. The ceramic dielectric substrate includes first and second major surfaces. The first and second electrode layers are provided inside the ceramic dielectric substrate. The second electrode layer is provided between the first electrode layer and the first major surface. The first electrode layer includes first and second portions. The first portion is positioned more centrally of the ceramic dielectric substrate than is the second portion. The first portion includes first and second surfaces. The second portion includes third and fourth surfaces. The third surface is positioned between the first surface and the second electrode layer. An electrical resistance of the first surface is less than an average electrical resistance of the first portion.

Abstract: According to one embodiment, an electrostatic chuck includes a ceramic dielectric substrate, a base plate, and first and second electrode layers. The ceramic dielectric substrate includes first and second major surfaces. The first and second electrode layers are provided inside the ceramic dielectric substrate. The second electrode layer is provided between the first electrode layer and the first major surface. The first electrode layer includes first and second portions. The first portion is positioned more centrally of the ceramic dielectric substrate than is the second portion. The first portion includes first and second surfaces. The second portion includes third and fourth surfaces. The third surface is positioned between the first surface and the second electrode layer. An electrical resistance of the first surface is greater than an average electrical resistance of the first portion.