| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 07/10/2013 | CN203054124U Station area user identifier instrument |
| 07/10/2013 | CN203054076U Slidable elastic structure anode current measuring apparatus |
| 07/10/2013 | CN203054075U Electric automobile series battery group voltage measurement apparatus |
| 07/10/2013 | CN203054074U Electric leakage detection device |
| 07/10/2013 | CN203054073U Current digital monitor for box-type substation three-phase low-voltage control cabinet |
| 07/10/2013 | CN203054072U Corona current acquisition card based on USB bus |
| 07/10/2013 | CN203054071U Lightning rod discharge counter with over-current protection device |
| 07/10/2013 | CN203054070U Lightning rod discharge counter with heat sink |
| 07/10/2013 | CN203054069U Overcurrent alarm detector for comprehensive protection device to be detected |
| 07/10/2013 | CN203054068U Voltage extracting apparatus |
| 07/10/2013 | CN203054067U Electroscope having alarm device |
| 07/10/2013 | CN203054066U Multipath power failure, power recovery and phase loss automatic alarm device |
| 07/10/2013 | CN203054065U PT cabinet sampling switch device |
| 07/10/2013 | CN203054064U Current sensor |
| 07/10/2013 | CN203054063U Input voltage measuring circuit for high-voltage frequency converter |
| 07/10/2013 | CN203054062U AC voltage signal detection circuit |
| 07/10/2013 | CN203054061U Ultrasonic power supply current detection circuit |
| 07/10/2013 | CN203054060U Helicopter special equipment current detection apparatus |
| 07/10/2013 | CN203054059U Anti-induction electric grounding apparatus |
| 07/10/2013 | CN203054058U Electromagnetic interference resistance clip type ammeter device |
| 07/10/2013 | CN203054057U Plastic optical fiber current sensor |
| 07/10/2013 | CN203054020U Partial-discharge high-frequency current sensor shielding case and current sensor assembly |
| 07/10/2013 | CN103198610A Circuit with equipotential high voltage electrified display and living body approach alarm and device thereof |
| 07/10/2013 | CN103197263A Small-sized alternating magnetoelectricity sensor with adjustable bias magnetic circuit |
| 07/10/2013 | CN103197247A Voltage measuring circuit of single cell in 14-cell series-connection battery pack |
| 07/10/2013 | CN103197191A Multipurpose single phase socket wire-splice detector and application thereof |
| 07/10/2013 | CN103197178A Device and method of on-line monitoring of transformer direct current magnetic bias |
| 07/10/2013 | CN103197151A Storage battery parameter measurement device |
| 07/10/2013 | CN103197138A Intelligent electric meter with function of detecting power supply reliability and voltage qualified rate and detecting method thereof |
| 07/10/2013 | CN103197136A Ampere meter for air-core transformer and control method thereof |
| 07/10/2013 | CN103197135A Transient overvoltage monitoring method |
| 07/10/2013 | CN103197134A Online data collection device for lightning arrester |
| 07/10/2013 | CN103197133A Large earth screen shunt vector quantity measurement method based on wireless transmission |
| 07/10/2013 | CN103197132A Three-model redundant (TMR) digital current sensor |
| 07/10/2013 | CN103197131A Performance test system for photovoltaic power generation system |
| 07/10/2013 | CN103197130A Power grid voltage ZCP (Zero Crossing Point) detecting method and device |
| 07/10/2013 | CN103197129A Electric power signal zero crossing point detection method |
| 07/10/2013 | CN103197128A Synthetic test current zero crossing point slope calculating method |
| 07/10/2013 | CN103197127A Grounding step voltage detecting method and grounding step voltage detecting device of high-voltage equipment of switch gear room of converting station |
| 07/10/2013 | CN103197126A Lightning induction overvoltage simulation test platform |
| 07/10/2013 | CN103197125A Low-voltage prompting method of intelligent key |
| 07/10/2013 | CN103197124A Overvoltage identification method based on time-frequency matrix singular value |
| 07/10/2013 | CN103197123A Method of computing synthetic test attenuation-type recovery voltage |
| 07/10/2013 | CN103197122A Current detection circuit and switch-type regulator provided with same |
| 07/10/2013 | CN103197121A Current detection circuit and switch-type regulator provided with same |
| 07/10/2013 | CN103197120A Testing method of voltage fluctuation of circuit key point |
| 07/10/2013 | CN103197119A Interference type fiber optic current sensor based on magneto-optic modulation |
| 07/10/2013 | CN103197118A Garnet type current sensing device and manufacturing method of garnet module |
| 07/10/2013 | CN103197117A Frequency modulation radio transmitter detector |
| 07/10/2013 | CN103197116A Sensor for measuring a current in an electric cable |
| 07/10/2013 | CN103197115A Method of voltage correction of rechargeable battery pack |
| 07/10/2013 | CN102508007B Dynamic method for measuring surface property parameters of substance |
| 07/10/2013 | CN102435912B Method for positioning fault disturbance point in power grid |
| 07/10/2013 | CN102375107B Method and device for detecting fault electric arc based on time-frequency comprehensive analysis |
| 07/10/2013 | CN102288819B FPGA (field programmable gate array)-based power harmonic analyzer |
| 07/10/2013 | CN102169136B Method and system for monitoring brush current of generator on line |
| 07/10/2013 | CN102103160B Method and device for monitoring and alarming residual current, and detection controller |
| 07/10/2013 | CN102004182B System and implementation method for monitoring grounding current of transformer core on line |
| 07/10/2013 | CN101776531B Soft sensing method for load parameter of ball mill |
| 07/04/2013 | WO2013102045A1 Leakage current sensor for post-type insulator |
| 07/04/2013 | WO2013102040A1 Leakage current sensor for suspension type insulator |
| 07/04/2013 | WO2013067372A3 Removable sensor modules |
| 07/04/2013 | US20130173192 Current monitor for indicating condition of attached electrical apparatus |
| 07/04/2013 | US20130170312 Capacitor power source tamper protection and reliability test |
| 07/04/2013 | US20130169297 Method for measuring an electrical current and apparatus for this purpose |
| 07/04/2013 | US20130169268 Schottky Diode Radio Frequency Detector Probe With Amplitude Linearity Compensation |
| 07/04/2013 | US20130169188 Bidirectional voltage differentiator circuit |
| 07/04/2013 | US20130167652 Integrated Circuit and Apparatus for Detecting Oscillations |
| 07/04/2013 | DE102012024544A1 Photovoltaic system for use on roof of building for producing electric current form sunlight, has strings including up and down lines that are sealingly guided over at each other in region of monitoring units so that fields are compensated |
| 07/04/2013 | DE102011118954B4 Verfahren und Vorrichtung zur Überwachung einer Hochvoltanordnung Method and apparatus for monitoring a high voltage assembly |
| 07/04/2013 | DE102005024198B4 Schaltung und leckstromerkennungsverfahren für ein elektrofahrzeug Circuit and leakage current detection method for a electric vehicle |
| 07/04/2013 | CA2858407A1 Leakage current sensor for suspension type insulator |
| 07/03/2013 | EP2609440A2 Active and passive monitoring system for installed photovoltaic strings, substrings, and modules |
| 07/03/2013 | CN203039116U Earthing device |
| 07/03/2013 | CN203038865U Intelligent high-voltage DC relay |
| 07/03/2013 | CN203037835U Magnetic sensor |
| 07/03/2013 | CN203037815U Photovoltaic assembly heat cycle testing circuit monitoring device |
| 07/03/2013 | CN203037759U Detection apparatus for response waveform of dynamic reactive power compensation device |
| 07/03/2013 | CN203037758U Response waveform detection apparatus for straightly suspended type dynamic reactive generation device |
| 07/03/2013 | CN203037757U Detection apparatus for response waveform of dynamic var generation device |
| 07/03/2013 | CN203037734U Wind generating set self consumption measuring apparatus |
| 07/03/2013 | CN203037730U 1/4 fiber wave plate temperature compensation circuit system |
| 07/03/2013 | CN203037729U True RMS measuring meter |
| 07/03/2013 | CN203037728U Current measurement apparatus |
| 07/03/2013 | CN203037727U Discharge counter for lightning arrester equipped with circuit detection device |
| 07/03/2013 | CN203037726U Lightning rod discharge counter with light modulation circuit |
| 07/03/2013 | CN203037725U On-line monitoring device for iron core grounding current |
| 07/03/2013 | CN203037724U High-voltage electroscope |
| 07/03/2013 | CN203037723U Measurement device of double-loop-on-same-tower power transmission line unbalanced current |
| 07/03/2013 | CN203037722U Current sampling circuit |
| 07/03/2013 | CN203037721U Primary side feedback current detection device |
| 07/03/2013 | CN203037720U Online distribution line current monitor |
| 07/03/2013 | CN203037719U Automatic high-voltage low-voltage no-voltage alarm device for transformer |
| 07/03/2013 | CN203037718U Cell-marking and voltage-detecting equipment |
| 07/03/2013 | CN203037717U Driving motor current signal collection apparatus for transformer voltage regulation switch tap joint |
| 07/03/2013 | CN203037716U Transformer and reactor entrance VFTO high-frequency signal test device for GIS transformer station |
| 07/03/2013 | CN203037715U UXL330AH valve control lead acid battery dedicated voltage measuring tool |
| 07/03/2013 | CN203037714U Apparatus for collecting an iron core grounding current signal |
| 07/03/2013 | CN203037713U Multiple-signal collection device used for fire hazard detector |
| 07/03/2013 | CN203037712U Range-adaptive digital voltage meter |