Patents
Patents for G01R 31 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere (152,264)
02/2013
02/13/2013CN102928754A Initial movement device for triggering gas insulated switchgear (GIS) equipment defect in local discharge test for electricity
02/13/2013CN102928753A Inverter welding machine middle frequency insulation detection device
02/13/2013CN102928752A System and method for monitoring and analyzing insulation states of high-voltage device
02/13/2013CN102928751A Traveling wave principle-based high-tension overhead line insulator online monitoring method
02/13/2013CN102928750A Alternating voltage insulation failure detection device
02/13/2013CN102928749A High-precision transformer oil gas online monitoring device
02/13/2013CN102928748A Test method and test system for water-soaking pressure resistance of double metal piece type waterproof temperature controller
02/13/2013CN102928747A Determination method for lowest discharge position of inter-phase live working of transformer substation pipe bus
02/13/2013CN102928746A Testing device and testing method for wet withstand voltage of optical phase conductor (OPPC) connector box
02/13/2013CN102928745A Wide-band gain-adjustable medium inductive sensor for detecting partial discharge of switch cabinet
02/13/2013CN102928744A Partial discharge simulator of metal closed composite apparatus
02/13/2013CN102928743A Method for detecting fault of power line
02/13/2013CN102928742A Infrared image automatic fault identifying method for high-voltage equipment
02/13/2013CN102928741A Satellite time synchronization based electric power line fault location system and method
02/13/2013CN102928740A Intelligent collection type fault diagnosis and on-line temperature measuring system
02/13/2013CN102928739A Method and system used for locating power grid single-phase ground faults and based on wireless sensor network
02/13/2013CN102928738A Dynamic layer diagnostic device and method of smart power grid fault
02/13/2013CN102928737A Fault detection system and method
02/13/2013CN102928736A Signal processing method, unit and device as well as signal transmission system
02/13/2013CN102928735A Cable failure location method
02/13/2013CN102928734A Interrupt detecting device and interrupt detecting method
02/13/2013CN102928733A Earthing fault ranging system for power transmission line
02/13/2013CN102928732A 线路诊断仪和线路诊断方法 Diagnostic and line diagnostic method Line
02/13/2013CN102928731A Power distribution network fault line selection method using zero-sequence current full quantity Hough transformation
02/13/2013CN102928730A Grounding detection device
02/13/2013CN102928729A High-resistance ground fault detection method based on zero-sequence current zero crossing point interruption discrimination
02/13/2013CN102928728A High-resistance grounding fault detection method based on zero-sequence current waveform distortion convexity and concavity
02/13/2013CN102928727A Detecting an open wire between a battery cell and an external circuit
02/13/2013CN102928726A Short circuit detection circuit
02/13/2013CN102928725A Test monitoring method
02/13/2013CN102928724A Multi-test fixture grid test system and test method for printed circuit boards (PCB)
02/13/2013CN102928723A Intelligent robot system for detecting extra-high voltage line insulator
02/13/2013CN102928722A Maloperation cause detection method for jumping lockout relay due to power frequency AC interference of transformer station
02/13/2013CN102928721A Line loss concentrator
02/13/2013CN102928720A Defect rate detecting method of oil immersed type main transformer
02/13/2013CN102928719A Power unit aging testing device and method
02/13/2013CN102928718A Superconductivity insulation material electrical characteristic test device
02/13/2013CN102928717A Relay protection tripping matrix test system
02/13/2013CN102928716A Intelligent power quality monitoring system
02/13/2013CN102928715A Device and method for testing intensity of electromagnetic waves reflected and transmitted by electromagnetic shielding fabrics
02/13/2013CN102928714A Moonlet sun array life forecast method based on I-V curve and energy balance
02/13/2013CN102928713A Background noise measuring method of magnetic antennas
02/13/2013CN102928712A Magnetic control detection device and method of magnetic microwave absorbing coating
02/13/2013CN102928711A Broadband synchronous online measurement system for conductive electromagnetic disturbance of engineering machinery
02/13/2013CN102928710A Method for sensing line fault in non-driven time period of solenoid valve
02/13/2013CN102928709A Three-phase harmonic wave-based method and system for detecting reactive compensation capacitor faults
02/13/2013CN102928708A Method and device for measuring temperature coefficient of atomic frequency standard
02/13/2013CN102928707A Comprehensive testing device of observe and control terminal unit of switching station
02/13/2013CN102928706A Alternating current acquisition device and data acquisition method thereof
02/13/2013CN102928705A Voltage transformer error test power frequency resonance step-up automatic test method in GIS (geographic information system)
02/13/2013CN102928704A Intelligent diagnosis method for corrosion failure point of transformer substation grounding grid
02/13/2013CN102928703A Method and system for measuring short-time flicker
02/13/2013CN102928702A Branch loop monitor
02/13/2013CN102928701A Measuring system for measuring ion current field distribution characteristics under direct current transmission
02/13/2013CN102928700A Method for dynamically monitoring state of power transformer in real time
02/13/2013CN102928699A Converter synchronization experiment system and method
02/13/2013CN102928698A Circuit for detecting abnormity of test points
02/13/2013CN102928697A Low-frequency-band damping detection method and system of PSS2A (Power System Stabilizer 2A) model of excitation regulator
02/13/2013CN102928696A Test method applicable to low voltage ride through test of photovoltaic power station
02/13/2013CN102928695A Method for judging negatively-damped oscillation and forced oscillation on basis of straight line method
02/13/2013CN102928694A Method for determining carrying capacity correction coefficient of low-voltage frequency-conversion power cable
02/13/2013CN102928693A Monitoring system and monitoring method for switching process of shunt power capacitor
02/13/2013CN102928692A Method for measuring newly-added tested pieces in operation process of quartz crystal automatic testing system
02/13/2013CN102928691A System, method and device for detecting electromagnetic transient disturbance signals of electrical equipment
02/13/2013CN102928690A Anomaly detection method for electronic device
02/13/2013CN102928689A Method for testing IEC 61970CIS interface of power distribution management system
02/13/2013CN102928688A Method for synchronously testing automatic isolation of feeder fault from multiple points
02/13/2013CN102928687A Personal computer (PC) 104 and K virtual machine (KVM) based portable high-integration test equipment and test method
02/13/2013CN102928686A Split-type intelligent electric instrument
02/13/2013CN102928685A Substrate detecting device and substrate detecting method
02/13/2013CN102928684A Insulation monitoring device for medical isolated power system
02/13/2013CN102928683A Test monitoring system
02/13/2013CN102928682A Meshless high-voltage test device of electric locomotive
02/13/2013CN102928655A Method for detecting power abnormal data
02/13/2013CN102928646A Voltage sensor taking zinc oxide resistor as voltage divider, and application thereof
02/13/2013CN102928642A Current testing system
02/13/2013CN102928633A Heavy-current mutual inductor error testing method and anti-toppling testing brackets for GIS (Gas Insulated Substation)
02/13/2013CN102928626A Device for quickly centering and clamping motors during test
02/13/2013CN102928470A Mobile type cyclic VFTO (Very Fast Transient Overvoltage) insulating oil testing system
02/13/2013CN102928249A System and method for simulating output of solar cell array based on programmable power supply
02/13/2013CN102928207A Onboard LED automatic testing method
02/13/2013CN102927656A Fault detection method and fault protective circuit for air-conditioning auxiliary electric heater
02/13/2013CN102289682B Transformer fault diagnosis method based on integrated learning Bagging algorithm
02/13/2013CN102156234B Method for measuring electromagnetic safety margin of electric initiating explosive device in radar scanning environment
02/13/2013CN102116850B Device and method for testing rectifier
02/13/2013CN102104278B Power supply intelligent system of cell
02/13/2013CN102096042B System for testing linear motor characteristics
02/13/2013CN102095956B Detecting device and method
02/13/2013CN102081129B Method for diagnosing short circuit fault of stator winding of switched reluctance motor
02/13/2013CN102074757B Method for estimating charge states of lithium ion battery
02/13/2013CN102074397B Conductive contact surface performance mutual inductance isolating real-time online diagnosing and repairing system and using method thereof
02/13/2013CN101949982B Super capacitor detection and control circuit system
02/13/2013CN101943730B Idling time testing circuit and modulation circuit applied to inductive load
02/13/2013CN101937059B Single-wave fault current testing device of converter valve running test and testing method
02/13/2013CN101833958B Measurement apparatus, reproduction apparatus, and measurement method
02/13/2013CN101806866B Monomer battery voltage measurement circuit of fuel cell stack
02/13/2013CN101802630B Handler for electronic components, in particular IC's, comprising a plurality of circulating carriages that are guided along a circulating track
02/13/2013CN101632026B Method for testing an electronic unit
02/13/2013CN101562302B Novel earth leakage protection socket
02/13/2013CN101499433B System and method for electric test of semiconductor wafer