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