Abstract: A LCDI power cord circuit is provided. The circuit includes energizing shielded wires and monitoring the energized shields for surges, e.g., arcing, and/or voltage drops, e.g., shield breaks detected by a Power Cord Fault Circuit (PCFC). The PCFC includes one dual purpose amplifying/switch transistor and the LCDI power cord circuit does not include any discrete capacitive components.

Abstract: An arc fault detector includes: a first electric line; a sensor for monitoring an electric current or voltage spectrum in the first electric line and outputting a broadband measurement signal as a monitored signal; a minimum detection unit for detecting a minimum signal value of the monitored signal over a broadband measurement range as a detected minimum signal value; and a controller unit connected to an output of the minimum detection unit, the controller unit comparing the detected minimum signal value with a predefined arc pattern, and outputting a trigger signal on a trigger output if the detected minimum signal value matches the arc pattern.

Abstract: A smart accessory device includes an actuator and is designed to be used to actuate an operating mechanism of a circuit breaker in order to either open or close the separable contacts of the circuit breaker. The accessory can be one of a shunt trip, spring release, or under voltage release device. The actuator includes a solenoid and plunger. The accessory determines the operating condition of the actuator based on how much current flows through the coil when the power source provides power to the accessory device, and continually executes a coil diagnostic to determine the operating condition of the coil while power is being provided to the accessory device. If the accessory fails to trip the circuit breaker when required, the accessory can determine whether the failure was due to either of the solenoid or the plunger.

Abstract: An apparatus includes an absorption circuit, a control circuit and a hot plug line; an input end of the absorption circuit is connected to an input end of the hot plug line, an input end of the control circuit is connected to the input end of the hot plug line, output ends of the absorption circuit and the control circuit are grounded, an output end of the hot plug line is connected to an input end of a sub-node mainboard, and the input end of the hot plug line is connected to a power supply end of a whole cabinet; the absorption circuit includes a first capacitor; in response to the hot plug line being connected to the power supply end of the whole cabinet, the first capacitor is not powered on; in response to the sub-node mainboard being powered on, the first capacitor is powered on.

Abstract: A plug has a power supply module, a leakage detection module, a timing module, an input terminal for external power supply and an output terminal for outputting voltage, a current loop is formed between the input terminal and the output terminal, the power module is connected to an external power source through the input terminal, the power module includes a rectifier unit D3 and a power control unit, the input of the rectifier unit D3 and the input terminal are electrically connected. The invention has the function of automatically disconnecting the line output when the line has leakage, protecting the plug and the externally connected electrical appliances, and at the same time, it can automatically perform self-checking at regular intervals to check whether the leakage protection function can be used normally, thereby improving the plug's reliability.

Abstract: Disclosed is a two-section conductor type ground fault circuit interrupter with a reverse wiring protection function. A patch key switch is arranged on a PCBA assembly, a conduction spring is mounted between an electric plug bush and the PCBA assembly, and an electronic relay is mounted between an output end of a load copper sheet and the conduction spring. A condition that a metal key is exposed to generate a spark or a metal press piece falls off is avoided, so a two-section conductor structure with the reverse wiring protection function is achieved.

Abstract: Integrated device having GDT and MOV functionalities. In some embodiments, an electrical device can include a first layer and a second layer joined with an interface, with each having an outer surface and an inner surface, such that the inner surfaces of the first and second layers define a sealed chamber therebetween. The electrical device can further include an outer electrode implemented on the outer surface of each of the first and second layers, and an inner electrode implemented on the inner surface of each of the first and second layers. The first layer can include a metal oxide material such that the first outer electrode, the first layer, and the first inner electrode provide a metal oxide varistor (MOV) functionality, and the first inner electrode, the second inner electrode, and the sealed chamber provide a gas discharge tube (GDT) functionality.

Abstract: An electrostatic chuck includes a ceramic base, a ceramic dielectric layer, an electrostatic electrode, and a ceramic insulating layer. The ceramic dielectric layer is positioned on the ceramic base and is thinner than the ceramic base. The electrostatic electrode is embedded between the ceramic dielectric layer and the ceramic base. The ceramic insulating layer is positioned on the ceramic dielectric layer and is thinner than the ceramic dielectric layer. The ceramic insulating layer has a higher volume resistivity and withstand voltage than the ceramic dielectric layer, and the ceramic dielectric layer has a higher dielectric constant than the ceramic insulating layer.

Abstract: A method for protecting at least a part of a network segment of an electrical power distribution network has: detecting voltage dips at the intermediate feeding devices of the line arrangements by the voltage dip detection devices; generating and feeding an electrical signal into the line arrangement by the signal generating device at each intermediate feeding device at which one of the voltage dips is detected, the electrical signals having frequencies different from a network frequency of the network segment; receiving the electrical signals via the line arrangements by the receiving devices of the line protection devices; detecting electrical faults on the line arrangement using the electrical signals received by the triggering device of the respective line protection device; and triggering the disconnecting device of the line protection device of the line arrangement, where an electric fault is detected, by the triggering device so that the line arrangement is electrically disconnected from the further el

Abstract: An actuation device for actuating a circuit breaker, has a circuit arrangement and a plurality of resistor devices, wherein a plurality of first switching elements of the circuit arrangement are connected to a respectively assigned first voltage source and a respectively assigned resistor device and have a switching input that is connected to an actuation logic unit, wherein this actuation logic unit furthermore has a superordinate actuation input and a plurality of sensor inputs. A method for operating such an actuation device is also presented, wherein, during the switching-on or the switching-off process of the circuit breaker, the plurality of first switching elements are switched on in a clocked manner and therefore generate a target voltage profile at the control input of the circuit breaker.

Abstract: Provided is a power supply device including a capacitor, a pre-charge circuit and a control circuit. The capacitor is connected in series with a contactor that is connected between an inverter driving a motor and a battery and that switches on or off power supply from the battery to the inverter, and is connected in parallel with the inverter. The pre-charge circuit is connected in parallel with the contactor and pre-charges the capacitor. The control circuit controls the pre-charge circuit and the contactor. The control circuit includes a sensor that measures the voltage of the battery and the voltage of the capacitor, and determines whether the pre-charge is necessary according to whether a ratio of the voltage of the capacitor to the voltage of the battery is equal to or less than a target value.

Abstract: A control system that detects loosening of a vibrator component in a spreader system. As the vibrator loosens over time, it draws more current. Eventually, this excess current causes the vibrator motor to burn out. The control system detects the loosening of the vibrator to indicate a fault condition by measuring current increase in the vibrator, and then indicating a fault condition that the bolts must be tightened, which results in lowering of the current draw, thereby protecting the vibrator motor from burnout. The system has a “learning mode” capable of establishing and memorizing a baseline of current draw suitable for a vibrator. In this way, a current threshold is exceeded over time, which indicates loosening of the vibrator. The baseline level can be selectively changed adapted with changing conditions, or adapted to other types of systems besides spreader vibrators.

Abstract: A high voltage battery cluster, and an overcurrent protection circuit and a switch box of the high voltage battery cluster are provided. The overcurrent protection circuit includes a first fusing module and a second fusing module. Since a withstand current-time curve of the first fusing module is different from a withstand current-time curve of the second fusing module, in a case that an overcurrent fault occurs in a high voltage battery cluster, one fusing module can cause an open circuit in the high voltage battery cluster prior to another fusing module, thereby preventing the high voltage battery cluster from being broken by a large current when an overcurrent fault occurs in the high voltage battery cluster, thus ensuring an electrical safety of the high voltage battery cluster.

Abstract: One or more examples relate, generally, to a programmable voltage lockout circuit provided at an electronic device. Such a programmable voltage lockout circuit asserts a lockout of the electronic device at least partially responsive to a user-programmed threshold and a supply voltage of the electronic device. One or more examples relate, generally, to configuring a programmable voltage lockout circuit utilizing a user-programmed threshold.

Abstract: A fault-current limiting device having an input voltage node configured to receive a first voltage signal from an energy source, such as a battery, and an input reference node configured to receive a reference signal from the energy source. The device further includes a first switch coupled between the input voltage node and an output voltage node and a second switch coupled between the input reference node and an output reference node. The device further includes a current sensor circuit coupled to the output voltage node and coupled respectively to the first switch and the second switch wherein the current sensor circuit is configured to open the first and second switches in response to sensing a current signal at the output voltage node that exceeds a threshold current (e.g., a transient fault current).

Abstract: A method for driving a power transistor includes comparing a measurement signal that is representative of a load current to a comparator threshold that corresponds to an overcurrent threshold; generating a first fault signal when the measurement signal exceeds the comparator threshold for a first time interval; generating a second fault signal when the measurement signal exceeds the comparator threshold for a second time interval that is greater than the first time interval; regulating a control voltage provided to the control terminal of the transistor to turn off the transistor in response to the second fault signal; and in response to the first fault signal, adjusting the control voltage to an adjusted voltage level in order to limit the load current to a reduced current level that is preconfigured to be greater than the overcurrent threshold. The adjusted voltage level is sufficient to maintain the power transistor in an on-state.

Abstract: A differential protection device monitors a first object to be protected in an electrical energy supply network. The differential protection device has a measuring unit configured to acquire measurement values at one end of the first object to be protected, a communication unit configured to exchange measurement values with a differential protection device arranged at another end of the first object to be protected, the communication unit has a physical interface for transmitting and receiving the measurement values, and an evaluation unit configured to form a differential value and to generate a fault signal indicating a fault with regard to the first object to be protected if the differential value exceeds a predefined threshold value. Ideally, the differential protection device is configured to monitor further objects to be protected and to exchange respective further measurement values with regard to each further object to be protected.

Abstract: A wireless-controlled smart plug device and methods of use and operation, using a solid state switch to provide electrical power from an outlet to a load, and provide protection against overload, short circuit, ground, arc, or voltage surge faults. The switch includes a bidirectional semiconductor switch with two back-to-back connected transistors, such as silicon power MOSFETs, silicon insulated-gate bipolar transistors (IGBTs), silicon carbide (SiC) transistors, or gallium nitride (GaN) transistors, each configured to control the current flow from the electrical receptacle to the external electrical load.

Abstract: An electrical over stress protection device is provided. A detection circuit detects an input voltage from a pad, provides a first discharge path when the input voltage is higher than a preset voltage, and provides a turn-on voltage to a discharge protection circuit to control the discharge protection circuit to provide at least one second discharge path.

Abstract: A circuit protection device is provided. The circuit protection device includes an active energy absorber that is coupled between two power lines in an electrical power distribution system and is configured to selectively conduct fault current responsive to overvoltage conditions. The active energy absorber includes an overvoltage protection module that includes two thyristors that are connected in anti-parallel with one another and a varistor that is connected with the overvoltage protection module as a series circuit. The series circuit including the varistor and the overvoltage protection module is connected between the power lines.