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| Number | Title | Issue Date |
| 8179147 | Method and apparatus for detection and control of dc arc faults A method and apparatus for managing DC arc faults. At least a portion of the method is performed by a controller comprising at least one processor. In one embodiment, the method comprises analyzing a signature of a signal of a power converter and determining, based ... | 05/15/2012 |
| 8179145 | Method and apparatus for testing AFCI device for series arc detection Testing an AFCI device includes providing an AFCI device to be tested and a load, wherein the AFCI device and the load form an electrical circuit, applying AC power to the AFCI device, generating a high frequency broadband noise signal, amplifying the high frequency... | 05/15/2012 |
| 8179146 | Partial discharge detection sensor and partial discharge detection device using the same A partial discharge detection sensor is used for detecting a partial discharge signal in a gas-insulated equipment using a PCB substrate, and a partial discharge detection device employs the partial discharge detection sensor. The partial discharge detection sensor ... | 05/15/2012 |
| 8098072 | Partial discharge coupler for application on high voltage generator bus works A partial discharge coupler for detecting partial discharges in a conductor includes a frequency dependent network, a differential amplifier and a frequency selective coupling component. The frequency dependent network includes a first filter component, a fuse compo... | 01/17/2012 |
| 8093904 | Arc detecting device and aircraft equipped therewith An arc detecting device includes a detector for acquiring time series data concerning a characteristic quantity, such as a voltage or a current in a circuit, targeted for detecting an arc; a basic data generator for generating basic data made of a plurality of frequ... | 01/10/2012 |
| 8085054 | Detecting arc discharges To detect arc discharges occurring in a plasma, a parameter of the plasma process is determined, and after a first period of time following the detection of an arc discharge the parameter is again determined. In the event that after the first period of time no arc d... | 12/27/2011 |
| 8008925 | Electrical partial discharge pulse marker discrimination A marker pulse discriminator monitor that enables filtering of partial discharge pulses for monitoring the condition of a generator in a power plant system. The monitor detects partial discharge pulses emanating from the generator and includes a plurality of first m... | 08/30/2011 |
| 8008926 | UHF partial discharge and location measuring device for high-voltage power devices Disclosed is a UHF partial discharge and its location measuring device for high-voltage power devices. The measuring device includes a partial discharge sensor, an external noise sensor, an analogue-digital converter, a peak detector, a partial discharge signal proc... | 08/30/2011 |
| 8004287 | Method of detecting the wet arc fault in the AC power distribution applications Methods for detecting wet arc faults are based on the direct current (DC) signature analysis and pattern matching pertaining to wet arc characteristics. While magnifying some wet arc fault signatures, it may be found that the wet arc current signal itself resembles ... | 08/23/2011 |
| 7986148 | Arc fault detector An arc fault detector, as a stand alone device or in combination with a circuit interrupting device such as a ground fault interrupter (GFCI), protects from potentially dangerous arc fault conditions. The device utilizes a line side or load side series connected ind... | 07/26/2011 |
| 7952360 | Method and system for passively detecting and locating wire harness defects A method and system for detecting defects in a wire or wire harness includes a pair of sensors wrapped around the wire or harness, a data acquisition device for monitoring pulses in the signal produced by the sensors around the wires, and a diagnostics engine. The d... | 05/31/2011 |
| 7863905 | Detection and monitoring of partial discharge of a power line There is provided a method that includes (a) acquiring a first spectral component of a single noise pulse on a power line, and a second spectral component of the single noise pulse, (b) determining that the single noise pulse is synchronous with a power voltage on t... | 01/04/2011 |
| 7795878 | Dimensions determination for insulating coatings Systems and methods for determining the dimensions of insulating coating sections applied to a conductive component are disclosed. The method includes providing a specimen having an insulating coating section of a first surface area and a first thickness. The method... | 09/14/2010 |
| 7782063 | Partial discharge charge quantity measuring method and device The present invention includes an antenna for measuring an electromagnetic wave radiated from a device to be measured stemming from partial discharge and having sensitivity at least in the UHF band; a filter for extracting a TEM mode component from a measured time w... | 08/24/2010 |
| 7768269 | Method of multi-location ARC sensing with adaptive threshold comparison A method of responding to voltage or current transients during processing of a wafer in a plasma reactor at each of plural RF power applicators and at the wafer support surface. For each process step and for each of the power applicators and the wafer support surfac... | 08/03/2010 |
| 7750645 | Method of wafer level transient sensing, threshold comparison and arc flag generation/deactivation A method for processing a semiconductor wafer in a plasma reactor comprises sensing transient voltages or currents on a conductor coupled to the wafer and providing a first comparator for comparing the transient voltages or currents with a threshold level stored in ... | 07/06/2010 |
| 7750646 | Detector for precursive detection of electrical arc A detector system for precursively identifying an electrical arcing event is provided. The system may include a transmission channel for transmitting a radio frequency signal to a zone where an arcing event may occur. The system may further include a reception chann... | 07/06/2010 |
| 7750644 | System with multi-location arc threshold comparators and communication channels for carrying arc detection flags and threshold updating A plasma reactor system for processing a wafer in which respective comparators are coupled to the respective RF transient sensors which are coupled in turn to respective RF power application points. The comparators have respective comparison thresholds. The system f... | 07/06/2010 |
| 7737702 | Apparatus for wafer level arc detection at an electrostatic chuck electrode Wafer level arc detection is provided in a plasma reactor using an RF transient sensor sensing voltage at an electrostatic chucking electrode, the RF sensor being coupled to a threshold comparator, and a system controller responsive to the threshold comparator. ... | 06/15/2010 |
| 7733095 | Apparatus for wafer level arc detection at an RF bias impedance match to the pedestal electrode Wafer level arc detection is provided in a plasma reactor using an RF transient sensor coupled to a threshold comparator, and a system controller responsive to the threshold comparator. ... | 06/08/2010 |
| 7728602 | Harmonic derived arc detector An arc detection system includes a radio frequency (RF) signal probe that senses a RF signal at an input of a RF plasma chamber and that generates a signal based on at least one of the voltage, current, and power of the RF signal. A signal analyzer receives the sign... | 06/01/2010 |
| 7535234 | ARC fault detector An arc fault detector, as a stand alone device or in combination with a circuit interrupting device such as a ground fault interrupter (GFCI), protects from potentially dangerous arc fault conditions. The device utilizes a line side or load side series connected ind... | 05/19/2009 |
| 7532012 | Detection and monitoring of partial discharge of a power line There is provided a method that includes (a) determining a characteristic of a fundamental spectral component of a spectrum of a power spectrum of noise on a power line, and (b) determining a condition of the power line based on the characteristic. ... | 05/12/2009 |
| 7514936 | Detection and suppression of electrical arcing Method and apparatus for detecting or suppressing electrical arcing or other abnormal change in the electrical impedance of a load connected to a power source. Preferably the load is a plasma chamber used for manufacturing electronic components such as semiconductor... | 04/07/2009 |
| 7514934 | DC bias voltage measurement circuit and plasma CVD apparatus comprising the same A circuit for measuring DC bias voltage occurring in an ungrounded electrode of a plasma processing apparatus, includes: a first terminal connected between the ungrounded electrode and the RF power source; a second terminal for determining a value of the DC bias vol... | 04/07/2009 |
| 7514935 | System and method for managing power supplied to a plasma chamber A system and method for managing power delivered to a processing chamber is described. In one embodiment power is delivered to the processing chamber with a power cable, the power cable storing energy and including a first and second conductors, the first conductor ... | 04/07/2009 |
| 7492163 | Systems, devices, and methods for arc fault detection Certain exemplary embodiments can include an arc fault detection circuit. The arc fault detection circuit can include a zero crossing analysis sub-system including a counter configured to determine, for a first waveform, a count of dips that occur between a pair of ... | 02/17/2009 |
| 7489138 | Differential arc fault detection A method and apparatus detect arc faults. The method and apparatus may digitally detect current and voltage signals at a master node (111) positioned at a first point in a wiring system (131). At a second point in the wiring system (131), a slav... | 02/10/2009 |
| 7486082 | Anomaly detection in inverter system An inverter system which converts DC input into AC output and supplies the AC output to a load such as an FL tube detects change in a circuit current due to anomaly such as discharge without contacting with a current route. Relating to an inverter which converts DC ... | 02/03/2009 |
| 7463037 | Devices, systems, and methods for adaptive RF sensing in arc fault detection A method for arc fault detection, includes automatically generating an output signal responsive to an input signal. The input signal is indicative of an arc fault. The output signal is configured to cause an electrical circuit to open. The output signal is generated... | 12/09/2008 |
| 7443640 | Apparatus for detecting arc fault Disclosed herein is an apparatus for detecting an arc fault, which prevents a malfunction caused by a conventional current detecting method by detecting a source voltage applied onto a conductive wire to determine whether there is an arc fault, prevents a malfunctio... | 10/28/2008 |
| 7439744 | Automated arc generator and method to repeatably generate electrical arcs for AFCI testing An apparatus for repeatably generating electrical arcs for testing an electrical switching device, such as an arc fault circuit interrupter, includes a stationary electrode and a movable electrode that is moved along a path of travel by an electromechanical device u... | 10/21/2008 |
| 7391218 | Method and apparatus for generalized arc fault detection A method and an apparatus detect series and/or parallel arc faults in AC and DC systems. The method according to one embodiment inputs an AC current signal; extracts a fundamental component of the AC current signal and monitoring an amplitude variation profile for t... | 06/24/2008 |
| 7388384 | Method and system for monitoring partial discharge in gas-insulated apparatus A gas-insulated apparatus is equipped with multiple sensors for sensing a partial discharge signal caused by a foreign substance, and a frequency analyzing section for analyzing the frequency of the sensed partial discharge signal. A defect type judging section esti... | 06/17/2008 |
| 7386411 | Automatic hi-pot test apparatus and method An exemplary automatic hi-pot test apparatus (20) includes a high voltage supply (21), a transmission device configured for transmitting an electronic device (26) to be tested, a connecting device electrically connected to the high voltage suppl... | 06/10/2008 |
| 7372280 | Method and system for transmitting an information signal over a power cable The invention relates to a method for inputting an information signal into a power cable which is connected to a voltage supply and which includes at least one or more conductors, a dielectric provided around the conductors and a conductive earth sheath arranged who... | 05/13/2008 |
| 7368918 | Devices, systems, and methods for adaptive RF sensing in arc fault detection Certain exemplary embodiments include a method, which can include automatically generating an output signal responsive to an input signal. The input signal can be indicative of an arc fault. The output signal can be configured to cause an electrical circuit to open.... | 05/06/2008 |
| 7366622 | Arc fault identification using model reference estimation An apparatus and method for the identification of arcing phenomena in a faulted electrical network. By continually updating a model for the load on an electrical branch, an estimate of the behavior of that load may be calculated. Since electrical arcing faults resul... | 04/29/2008 |
| 7365547 | Circuit arrangement for a corrosion protection current feed and for a line test for two-wire lines A circuit arrangement for a line test and for feeding a corrosion protection current into a two-wire line comprises a controllable ramp generator for producing a ramp voltage, at least one first test impedance to be connected to a first line of a two-wire line, at l... | 04/29/2008 |
| 7363605 | Eliminating false positives in crosstalk noise analysis A method for analyzing a circuit design identifies a possible noise fault for a timing interval based on a timing analysis of a victim net and at least one aggressor net of the circuit design and determines whether the noise fault is feasible based on a behavioral r... | 04/22/2008 |
