| 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) |
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| 04/06/2011 | EP2306607A2 Device and method to protect an electric power distribution network against current faults |
| 04/06/2011 | EP2306487A1 Wiring device with leakage detection function |
| 04/06/2011 | EP2304857A1 Fast power swing unblocking method and apparatus for distance protection in power system |
| 04/06/2011 | CN201789458U Smooth soft start device of direct-current motor |
| 04/06/2011 | CN201789330U Crane solar power supply device |
| 04/06/2011 | CN201789286U Improved voltage stabilizing circuit used for portable tire fixer of automobile |
| 04/06/2011 | CN201789279U Special overvoltage protection device for low-voltage universal circuit breaker |
| 04/06/2011 | CN201789276U Protective circuit of rectifying and charging equipment |
| 04/06/2011 | CN201789275U Over-current protection circuit of frequency converter |
| 04/06/2011 | CN201789268U 分界断路器设备 Boundary breaker |
| 04/06/2011 | CN201789267U Harmonic wave elimination protector of three-phase electricity grid electromagnetic voltage transformator |
| 04/06/2011 | CN201789266U Electric leakage monitoring circuit for electrical appliance device |
| 04/06/2011 | CN201789162U Multifunctional residual current protective plug |
| 04/06/2011 | CN201788655U Energy meter LED backlight panel |
| 04/06/2011 | CN201788236U Special detection device of sliding contact power supply dolly |
| 04/06/2011 | CN201783740U Automatic energy-saving protector of electric welder for metal bridges |
| 04/06/2011 | CN102007681A Drive circuit for a DC motor, comprising an h-bridge and a motor braking circuit |
| 04/06/2011 | CN102007659A Load circuit protection device |
| 04/06/2011 | CN102006704A Light-emitting diode (LED) drive control circuit and lighting device |
| 04/06/2011 | CN102005944A Power supply rectification circuit of intelligent power supply protector |
| 04/06/2011 | CN102005939A AC power switching module |
| 04/06/2011 | CN102005796A Mobile power supply and control method thereof |
| 04/06/2011 | CN102005751A Safe high-efficiency high-voltage power supply method for server |
| 04/06/2011 | CN102005750A Composite superconductive fault current-limiting device with self-protection function |
| 04/06/2011 | CN102005745A IT power distribution system of 380/220V low voltage network and leakage protector thereof |
| 04/06/2011 | CN102005721A Differential current transformer and residual current operated protective device |
| 04/06/2011 | CN102005720A Neutral line breakage detection protection method and device |
| 04/06/2011 | CN102005719A Three-phase undervoltage and phase failure time-delay relay |
| 04/06/2011 | CN102005718A Protector for electronic load and electronic load system |
| 04/06/2011 | CN102005717A Large power equipment overload protection device |
| 04/06/2011 | CN102005716A Line side crowbar for energy converter |
| 04/06/2011 | CN102005340A Built-in intelligent breaker with automatic switching function |
| 04/06/2011 | CN102005194A Monochrome liquid crystal module universal driver |
| 04/06/2011 | CN101427327B Process for the dimensioning of an separation device of overvoltage discharger |
| 04/06/2011 | CN101345410B Design method for judging out-of-step separation based on application compensating impedance principle |
| 04/06/2011 | CN101345409B Design method for judging out-of-step separation based on in-place active/idle work variable quantity |
| 04/06/2011 | CN101340081B Electric protective method for electromagnetic forming machine |
| 03/31/2011 | WO2011038260A2 Surge protection device with improved response time |
| 03/31/2011 | WO2011037200A1 Power supply control device |
| 03/31/2011 | WO2011037175A1 Power supply control device |
| 03/31/2011 | US20110075311 Surge protection device for isolating premise devices |
| 03/31/2011 | US20110075310 Electrical power switching with efficient switch protection |
| 03/31/2011 | US20110075309 Overcurrent protection apparatus for load circuit |
| 03/31/2011 | US20110075308 System and Method for Short Circuit Protection |
| 03/31/2011 | US20110075305 Two-level lightning protection circuit |
| 03/31/2011 | US20110075304 System and method for polyphase ground-fault circuit-interrupters |
| 03/31/2011 | US20110075303 Circuit interrupter and receptacle including improved contact configuration |
| 03/31/2011 | DE102009045132A1 Vorrichtung zum Schalten eines Verbrauchers Apparatus for switching loads |
| 03/30/2011 | EP2302893A1 Constant current-type high-voltage power supply apparatus and method of controlling power output from the same |
| 03/30/2011 | EP2301128A1 Method for producing a fault signal and electric protective device |
| 03/30/2011 | EP2301127A1 Method for performing a self-test by a residual current operated device, and residual current operated device |
| 03/30/2011 | EP2301126A1 Circuit breaker |
| 03/30/2011 | EP2301125A1 Method and system for rearranging sound conductors in parallel lines in power transmission |
| 03/30/2011 | EP2300868A2 Method for electrically securing an electrical power supply of an electrically controlled lighting system or system with variable optical properties and use of the electrically secured system |
| 03/30/2011 | CN201781298U Direct current time controller for large LED display screen |
| 03/30/2011 | CN201781282U Harmonic wave controller |
| 03/30/2011 | CN201781281U Universal power saving device |
| 03/30/2011 | CN201781273U Lightning protection device for power distribution cabinet and frequency conversion cabinet |
| 03/30/2011 | CN201781271U Two-way multi-channel LED protection circuit |
| 03/30/2011 | CN201781269U Shutdown circuit of remote multi-zone automatically shutdown global positioning system (GPS) vehicular positioning system |
| 03/30/2011 | CN201781263U Electric-shock protection wall overcurrent leakage protection circuit of wall switch |
| 03/30/2011 | CN201781262U Intelligent electronic electric leakage protector |
| 03/30/2011 | CN201781261U Distribution box protection device |
| 03/30/2011 | CN201781260U Power source protective circuit |
| 03/30/2011 | CN201781259U Power connector with overload and surge protection function |
| 03/30/2011 | CN201775186U Electric anti-overloading rotary eyelash brush |
| 03/30/2011 | CN1643759B A protection device |
| 03/30/2011 | CN101998726A LED lamp driving circuit with surge protection function |
| 03/30/2011 | CN101998720A Circuit for improving conversion efficiency of LEDs by using inductance type converter |
| 03/30/2011 | CN101997334A Novel digital EPS fire emergency power system based on DSP |
| 03/30/2011 | CN101997309A Plastic die structure for combination of MOV, thermal link and resistor |
| 03/30/2011 | CN101997297A P87LPC764-based singlechip delay type leakage relay |
| 03/30/2011 | CN101997296A Simple over-voltage protection device circuit |
| 03/30/2011 | CN101997295A Circuit with functions of detecting over-voltage and over-current and protecting automatically |
| 03/30/2011 | CN101995892A High-voltage dynamic power supply circuit |
| 03/30/2011 | CN101992336A High-frequency electroplating power supply controller for electric welding machine |
| 03/29/2011 | US7916441 Device for protecting electronic circuits against faults |
| 03/29/2011 | US7916439 Semiconductor switch arrangement and an electronic device |
| 03/29/2011 | US7916438 Residual current device |
| 03/29/2011 | US7916437 Fault interrupter and operating method |
| 03/29/2011 | US7915911 Input circuit and semiconductor integrated circuit |
| 03/29/2011 | US7915899 Electrical safety devices and systems for use with electrical wiring, and methods for using same |
| 03/29/2011 | CA2427821C Current compensation method and device for power system protection |
| 03/24/2011 | WO2011035057A2 Line current differential protection upon loss of an external time reference |
| 03/24/2011 | WO2011035055A1 Charging current compensation for line current differential protection |
| 03/24/2011 | WO2011035053A1 Transformer differential protection |
| 03/24/2011 | WO2011033335A1 Method and system for managing an electrical junction box |
| 03/24/2011 | WO2011032585A1 Apparatus for protecting a medium voltage distribution transformer and the distribution line upstream of the transformer |
| 03/24/2011 | US20110069423 Protection circuit for over-current and short protection |
| 03/24/2011 | US20110069420 Protection to a power converter by using a high-voltage start-up device in a controller chip of the power converter |
| 03/24/2011 | DE102009040692A1 Leistungsschalter Circuit breaker |
| 03/24/2011 | CA2773904A1 Charging current compensation for line current differential protection |
| 03/24/2011 | CA2773903A1 Transformer differential protection |
| 03/24/2011 | CA2773193A1 Equivalent alpha plane fault determination for a multi-terminal power apparatus |
| 03/24/2011 | CA2771295A1 Line current differential protection upon loss of an external time reference |
| 03/23/2011 | EP2201393B1 Method for fault location on series compensated power transmission lines with two-end unsynchronized measurement |
| 03/23/2011 | CN201774251U Automobile power protection device |
| 03/23/2011 | CN201774239U Motor driver with failure detection function |
| 03/23/2011 | CN201774236U Motor protecting alarm device |
| 03/23/2011 | CN201774235U Portable low-power generating unit overload protector |