Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02H - Emergency protective circuit arrangements › H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031)
09/2012
09/05/2012CN101847858B Lightning-protection fuse with reliable alarm and overvoltage surge protection device thereof
09/05/2012CN101771262B Micro-consumption power limitation device for electrical appliance
09/05/2012CN101651324B Longitudinal differential protection method based on synchronous sampling point vector compensation principle
09/05/2012CN101523230B Solar inverter and plant for converting solar energy into electrical energy
09/05/2012CN101291081B Data sampling and transmission module for power distribution system
09/04/2012US8259430 Surge protection device for isolating premise devices
09/04/2012US8259427 Power transistor circuit
09/04/2012US8259426 Variable frequency drive and methods for filter capacitor fault detection
09/04/2012US8259424 Thin-oxide device protection circuits for data converters
09/04/2012US8259423 Automotive vehicle charge port with fault interrupt circuit
09/04/2012US8259422 Switching power supply protection system, mother board and computer
09/04/2012US8258971 Low voltage warning circuit
08/2012
08/30/2012WO2012114185A1 Fail-safe ground fault circuit interrupter
08/30/2012WO2012113455A1 A method for obtaining an instantaneous direct current value, and control device
08/30/2012WO2012113440A1 Method and device for enhancing the reliability of generator ground fault detection on a rotating electrical machine
08/30/2012WO2012012276A3 Photovoltaic bipolar to monopolar source circuit converter with frequency selective grounding
08/30/2012US20120218672 Method and a device for overvoltage protection, and an electric system with such a device
08/30/2012US20120218670 Power supply device having overvoltage protection function
08/30/2012CA2825459A1 Fail-safe ground fault circuit interrupter
08/29/2012EP2492946A2 Digital sensitivity control for electrical power leakage
08/29/2012CN202406023U Voltage reduction circuit
08/29/2012CN202405849U Nanometer zinc oxide energy conversion system
08/29/2012CN202405825U Intrinsically safe battery with function of self restoration
08/29/2012CN202405770U Over-voltage protection circuit of power distribution cabinet
08/29/2012CN202405769U Overcharge protecting system for parallel battery pack groups
08/29/2012CN202405768U Protective circuit for large capacity and high power lithium-ion power batteries
08/29/2012CN202405766U Over-current protection circuit and battery using the circuit
08/29/2012CN202405765U Overdischarge protection system of parallel battery packs
08/29/2012CN202405764U Over-current protective system for parallel battery packs
08/29/2012CN202405763U Over-discharge protection circuit and battery utilizing same
08/29/2012CN202405759U Over-current protection circuit for direct-current switching power source
08/29/2012CN202405751U Overload protection device of intelligent distribution transformer
08/29/2012CN202405749U Flameproof high-voltage selective leakage protection device for mines
08/29/2012CN202405748U Novel aftercurrent detector
08/29/2012CN202405747U Undervoltage protection tripper for low-voltage circuit breaker
08/29/2012CN202405746U Under-voltage release device
08/29/2012CN202405745U Power source starter of motor
08/29/2012CN202405744U Overvoltage protection circuit for power factor correction (PFC) output filter capacitor of display device
08/29/2012CN202405743U Overvoltage protector for residential electricity utilization
08/29/2012CN202405742U Overvoltage preventing safety device
08/29/2012CN202405741U Self-recovery cut-off protective circuit for low-voltage high-power safety barrier
08/29/2012CN202405740U Current-limiting protection circuit of alternating current power supply loop
08/29/2012CN202405739U Short circuit protector of RS-485 communication bus
08/29/2012CN202405738U Frequency converter and three-phase output over-current protection circuit thereof
08/29/2012CN202405669U Intelligent transformer substation
08/29/2012CN202405636U Novel power distribution cabinet
08/29/2012CN202403074U Mains drive street lamp of large power LED tandem connection with compensating components
08/29/2012CN202399925U Intelligent protective device for faults of automobile circuit
08/29/2012CN102651929A LED (Light-Emitting Diode) driven short-circuit protection circuit
08/29/2012CN102651569A Electronic device
08/29/2012CN102651544A Over-voltage protection method for field-effect transistor
08/29/2012CN102651543A Chip-scale latch-up over-current protection circuit independent of power supply module
08/29/2012CN101826793B Energy conversion controller
08/29/2012CN101752901B Method, system, equipment and device for synchronizing data sampling at different places
08/29/2012CN101675565B System and method for detection multiple current limits
08/28/2012US8254074 Power control circuit
08/28/2012US8254073 High voltage transmit/receive switch and method therefor
08/28/2012US8254072 Electrical load center
08/28/2012US8254071 Method and apparatus of providing 2-stage ESD protection for high-speed interfaces
08/28/2012US8254068 Regulating system having overvoltage protection circuit and current protection circuit
08/23/2012WO2012110279A1 Electromechanical relay circuit
08/23/2012WO2012110087A1 Method and arrangement for detecting an internal failure in h-bridge connected capacitor bank
08/23/2012WO2012109684A1 Residual-current-operated circuit breaker
08/23/2012WO2012025088A3 Protective circuit
08/23/2012US20120212872 System and method for protection of electrical appliances
08/23/2012US20120212871 Overcurrent detecting circuit and battery pack
08/23/2012US20120212870 Power modules with reverse polarity protection
08/23/2012US20120212863 Ground protection circuit and switch driving device using the same
08/23/2012US20120212077 Hot swappable synchronous buck regulator
08/23/2012DE102011011984A1 Fault current protection device has voltage multiplier circuit that is equipped with diode that is connected in parallel with resistor and capacitor
08/23/2012DE102011011983A1 Fault current protective device for protecting electrical systems against e.g. ignited fires, has transformer for detecting low and high fault currents, and protective circuitry switched parallel to winding and acting as crowbar circuit
08/22/2012EP2490311A1 Method and apparatus for detecting earth fault
08/22/2012CN202395477U DC (direct current) power supply panel
08/22/2012CN202395441U Anti-lightning transformer
08/22/2012CN202395426U Auto transformer digital instrument device
08/22/2012CN202395422U Automatic afety protection device of rolling device
08/22/2012CN202395420U Energy feedback device of centrifugal machine
08/22/2012CN202395419U Communication-capable undervoltage tripping device
08/22/2012CN202395418U Car light control and protection circuit of electric vehicle
08/22/2012CN202395417U Mine electric excavator cable ground protection device
08/22/2012CN202395416U AC (alternating current) electronic fuse
08/22/2012CN202395415U Explosion-proof long-distance short circuit protector for cable
08/22/2012CN202395414U A circuit protection device and an electronic circuit comprising the same
08/22/2012CN202395250U Ungrounded earth leakage protection plug
08/22/2012CN202394066U Power supply control module for RFID device
08/22/2012CN1998121B Surge protection method and surge suppression circuit
08/22/2012CN1989673B Differential current detection
08/22/2012CN1667539B Voltage regulator and method of manufacturing the same
08/22/2012CN102648580A Circuit assembly for a motor vehicle
08/22/2012CN102647138A Rectifying voltage-stabilizing power supply device for underground turbine generator
08/22/2012CN102646993A Low-voltage ride through (LVRT) system of wind generation set and method of the system
08/22/2012CN102646973A Distribution network electric shock protection method and device
08/22/2012CN102646966A Three-phase fault processing method of distributing line
08/22/2012CN102646965A Smart switch and power distribution network system adopting same
08/22/2012CN102646956A Electric leakage protection device
08/22/2012CN102646955A Comprehensive protecting device for coal mine power center
08/22/2012CN101820160B Optical coupling isolation device
08/22/2012CN101656180B Electromagnetic short circuit protection breaker
08/22/2012CN101630864B Power supply line breaking protection and alarm system
08/22/2012CN101557091B Short circuit protection circuit and method used for protecting damage of relay drive circuit
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