Matches 1 - 46 out of 46


Match Document Document Title
US20120112760 Arc Detection and Prevention in a Power Generation System  
A method for arc detection in a system including a photovoltaic panel and a load connectible to the photovoltaic panel with a DC power line. The method measures power delivered to the load thereby...
US20080061997 Power equipment  
A power equipment includes a first internal abnormality detection apparatus comprising a first antenna accommodation pipe which is connected to a first connection pipe formed in a enclosed...
US20100013494 ELECTRICAL PARTIAL DISCHARGE PULSE MARKET 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...
US20090177420 Detection, localization and interpretation of partial discharge  
In order to detect, localize and interpret a partial discharge occurring in a partial discharge site along an electrical equipment, two measurement probes and a synchronization probe are installed...
US20060038574 Method of detecting an arcing event and a printing machine arranged with the same  
A printing machine is arranged to detect an arcing event. An arcing detection signal based on the arcing event is formed. The arcing detection signal includes an arcing detection signal frequency...
US20150198650 METHOD AND SYSTEM FOR PROTECTING AGAINST ELECTRICAL ARCS IMPLEMENTING A MODULATION SPECIFIC TO A MODULE OF THE ACOUSTIC WAVE ACCOMPANYING AN ELECTRICAL ARC  
The invention relates to an electrical system comprising a plurality of modules that can be powered independently withy current, characterised in that it further comprises: a module configured to...
US20060170428 Electrical safety cord  
An electric cable which can be used with a shock hazard protector to provide arc fault and ground fault protection at a minimum cost. The electric cable includes a first insulated conductor for...
US20070108990 Arc monitoring system  
An arc monitor system locates an arc based on optimal frames from a frame obtained before an arc discharge to a frame obtained immediately after the arc discharge. The arc monitor system, used to...
US20130073241 Application Of Wideband Sampling For Arc Detection With A Probabilistic Model For Quantitatively Measuring Arc Events  
An arc detection system for a plasma generation system includes a radio frequency (RF) sensor that generates first and second signals based on a respective electrical properties of (RF) power that...
US20140340096 Method for Identifying One or More Simultaneously Occurring Partial Discharge Sources  
A method for identifying one or more simultaneously occurring partial discharge sources from partial discharge measurement signals of an electrical device to which an AC voltage is applied. A...
US20110057662 Arc Detector And Associated Method For Detecting Undesired Arcs  
An arc detector for detecting undesired arcs. The arc detector includes: an antenna for receiving an electromagnetic signal representing an arc; and a discriminator for analysing a signal from the...
US20090212786 Impedance-Based Arc Detector for Computed Tomography Scanner and Method of Use Thereof  
The present disclosure relates to an impedance-based arc detector for CT scanners and method of use and diagnosis therewith, and more specifically, to a two- or three-way conductive probe detector...
US20150260778 DIAGNOSIS SYSTEM FOR MONITORING STATE OF SWITCHBOARD  
A diagnosis system for monitoring a status of a switchboard is provided. The diagnosis system for monitoring a status of a switchboard includes a sensor unit installed in a switchboard, wherein...
US20100079148 UHF PARTIAL DISCHARGE AND ITS 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...
US20100060290 IDENTIFICATION OF POWER SYSTEM PRIMARY ARCS BASED ON PULSE DENSITY  
A diagnostic instrument distinguishes primary arcs from other electrical discharges in an electric power system based on pulse time density of radio frequency noise caused by the discharges. The...
US20150160284 ANALYZING PARTIAL DISCHARGE IN AN ELECTRIC POWER DISTRIBUTION SYSTEM  
There is provided a method that includes (a) detecting a partial discharge on a power line that carries a power signal, (b) measuring a characteristic of the partial discharge, thus yielding a...
US20090284265 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...
US20070139056 PARTIAL DISCHARGE DETECTION APPARATUS AND DETECTION METHOD OF ELECTRICAL ROTATING MACHINE  
A partial discharge detection apparatus of an electrical rotating machine includes a metal frame connected to a stator frame of the electrical rotating machine, a power line connected to one of a...
US20100116127 SYSTEM AND METHOD FOR LOCATING SPARKS IN ELECTROSTATIC PRECIPITATORS  
A system includes an electrostatic precipitator, an electromagnetic sensor and a processor to locate spark locations. The electromagnetic sensor is used at various locations of the electrostatic...
US20090146666 PARTIAL DISCHARGE CHARGE QUANTITY MEASURING METHOD AND DEVICE  
The present invention comprises an antenna adapted to measure an electromagnetic wave radiated from a device to be measured stemming from partial discharge and having sensitivity at least in the...
US20140062498 DEVICE FOR MONITORING INTERNAL ARC IN GAS INSULATED SWITCHGEAR  
A device for monitoring internal arc in gas insulated switchgear. The device includes: at least one or more partial discharge sensors that electronic wave signals of partial discharge generated by...
US20100328824 Arc Flash Detection  
An arc flash detector includes a light sensor, a light attenuating filter in communication with the light sensor, a housing disposed to support the light attenuating filter and the light sensor,...
US20050012507 Partial discharge monitoring apparatus and partial discharge remote monitoring system for rotating electric machines  
A partial discharge monitoring apparatus for a rotating electric machine includes a partial discharge detecting circuit which measures each signal output from a partial discharge sensor located in...
US20100201370 Arc Detection  
An arc detection system for a plasma generation system includes a radio frequency (RF) sensor that generates first and second signals based on a respective electrical properties of (RF) power that...
US20100176816 Partial Corona Discharge Detection  
A method of detecting partial corona discharge in a targeted circuit of an electrical apparatus, comprises the steps of: wrapping a Rogowski coil around a leg of the targeted circuit to produce a...
US20090302862 METHOD AND SYSTEM FOR MONITORING PARTIAL DISCHARGE WITHIN AN ELECTRIC GENERATOR  
Electrical generators used for power generation typically operate at high voltage. The High operating voltage results in a severe electrical stress environment for the generator conductor...
US20050104616 Electric motor monitoring system  
An electric motor monitoring system is described that comprises an antenna, a data sampling means and a data processing means. The system employs the antenna to detect high frequency arcing events...
US20080157781 Methods and systems for detecting series arcs in electrical systems  
A method of detecting a series arc in an alternating current electrical system is provided. The method is a pattern-recognition based approach and includes passing raw current signals from a...
US20120119751 MULTI-POLE ARCING FAULT CIRCUIT BREAKER INCLUDING A NEUTRAL CURRENT SENSOR  
A fault detection system is provided for a power distribution system having at least first and second line conductors carrying AC currents that are out of phase with each other from a source to a...
US20090079436 METHOD AND APPARATUS FOR GENERALIZED AC AND DC ARC FAULT DETECTION AND PROTECTION  
According to the features discussed herein, through a single generalized arc-fault detection algorithm, various types of series and/or parallel arc faults can be detected without any nuisance trip...
US20100259275 DEVICE FOR DETECTING AND LOCATING ELECTRIC DISCHARGES IN FLUID-INSULATED ELECTRICAL EQUIPMENT  
A device for detecting and locating at least one electric discharge in equipment insulated by fluid contained in an electrically-conductive housing. The equipment includes a plurality of grounding...
US20080288189 ARC DETECTOR  
A system and method for identifying an arcing event in electrical distribution equipment. The system includes memory for storing an arcing radio frequency characteristic indicative of an arcing...
US20150260777 PARTIAL DISCHARGE DETECTION SYSTEM AND METHOD WITH SYNCHRONIZATION  
A partial discharge acquisition system includes: a synchronization signal sensor device including a sensor module structured to remotely detect a first synchronization electromagnetic signal...
US20140239969 Method Of Locating An Event Transmitting A Signal  
The invention relates to a method and a device for locating an event transmitting a signal, including a set of sensors (Ai-Am) to measure the response times of the said signal, and processing...
US20120105073 Arrangement for Eliminating Interference from Acoustic Signals in a Ground-Borne Sound Locating Process  
An apparatus including a portable receiver with an acoustic sensor and a magnetic field sensor is adapted for locating a fault in an underground electrical line by evaluating ground-borne acoustic...
US20110267620 ARC FLASH DETECTION SYSTEM AND METHOD  
A sensor to simultaneously detect light and acoustic waves is presented. The sensor includes one or more optical fibers and a diaphragm disposed near one end of at least one of the one or more...
US20130092208 System and Apparatus for Arc Detection and Location in Solar Arrays  
A system and apparatus for detecting and locating an arc fault in a photovoltaic solar power array. A plurality of capacitors divide strings of photovoltaic cells into a series of magnetic loops....
US20110273183 APPARATUS AND METHOD TO DETECT A SERIES ARC FAULT OF AN ELECTRICAL CIRCUIT  
An apparatus is for a power circuit providing an alternating current to a load. The apparatus includes a high frequency current sensor structured to cooperate with the power circuit to provide a...
US20100201371 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,...
US20170170644 Method and Circuit for Detecting an Electric Arc in a Circuit, and Switching Device Using Such a Circuit  
A method and a circuit for detecting an electric arc in an electric circuit supplied with AC current during a supply period includes measuring at least one input signal (S) among a current (I) and...
US20170138999 ARC FLASH DETECTION DEVICE HAVING OPTIC FIBER SENSOR  
The present invention relates to an arc flash detection device for detecting the generation of an arc flash in a power receiving and distributing facility and for generating a trip signal upon the...
US20160231375 MINIATURE ARC FAULT CURRENT SENSOR AND SYSTEMS  
An arc fault sensor disposed on a circuit board proximate to a current carrying trace. The arc fault sensor includes a magnetic flux concentrator (MFC). The MFC includes a first flange and a...
US20160061881 Smart Junction Box for Photovoltaic Systems  
A “smart” junction box for photovoltaic systems provides electrical measurements of strings of photovoltaic cells to detect premature photovoltaic cell degradation, bypass diode failure, and...
US20150377950 PARTIAL DISCHARGE MONITORING SYSTEM AND PARTIAL DISCHARGE MONITORING METHOD  
A partial discharge monitoring system includes: electromagnetic wave detection sensors disposed in insulating gas enclosures being objects to be monitored, converting devices, and an interface...
US20150355307 METHOD FOR TESTING MAINFRAME PERFORMANCE OF DIFFERENT TYPES OF PARTIAL DISCHARGE DETECTORS BASED ON ANALOG VOLTAGE SIGNAL INJECTION  
A method for testing mainframe performance of different types of PD detectors based on analog voltage signal injection, the method comprises: using a function generator (19) with an adjustable...
US20150268292 METHOD OF DETECTING PARTIAL DISCHARGING LOCATION OF POWER DEVICE  
Provided is a method of accurately detecting the location of a partial discharge in a power device. For this purpose, the present invention measures sequential positions of arrival of partial...

Matches 1 - 46 out of 46