| Patents for H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions (32,726) |
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| 02/04/2009 | EP2020721A2 Switching assembly for monitoring a tachometer for a drive motor of a drum of a washing machine |
| 02/04/2009 | EP2020071A2 Systems and methods for maximizing the output of vehicle alternator |
| 02/04/2009 | CN201191770Y Circuit construction of portable power supply apparatus |
| 02/04/2009 | CN201191764Y Electric electricity-saving controller |
| 02/04/2009 | CN201191763Y Relay protection failure information processing apparatus protecting apparatus by wave recording document positioning |
| 02/04/2009 | CN201191762Y Relay protection failure information processing apparatus graphically displaying position change of protection switch |
| 02/04/2009 | CN201191761Y Current protection control device in 24kV vacuum circuit breaker |
| 02/04/2009 | CN201191760Y Over-current protection circuit of frequency transformer for centrifuge |
| 02/04/2009 | CN201191759Y Intelligence protecting monitor for electric motor |
| 02/04/2009 | CN201191758Y Five-in-one digital general air conditioner protector |
| 02/04/2009 | CN201191628Y Over-temperature protection construction for battery charging |
| 02/04/2009 | CN201188937Y Fan umbrella |
| 02/04/2009 | CN101361245A Device for limiting current of electric appliance |
| 02/04/2009 | CN101361244A Electronic method for starting compressor |
| 02/04/2009 | CN101361243A Protective device having a circuit breaker, in particular a low-voltage circuit breaker |
| 02/04/2009 | CN101360289A Bi-mode mobile phone and battery protection circuit thereof |
| 02/04/2009 | CN101360288A Bi-mode mobile phone and battery protection circuit thereof |
| 02/04/2009 | CN101359876A DC system locking method for back-to-back DC networking project |
| 02/04/2009 | CN101359856A Electric dust collector |
| 02/04/2009 | CN101359836A Self-switching charging circuit |
| 02/04/2009 | CN101359823A One-phase grounding hierarchical or integral wire-selective device for high-voltage grid |
| 02/04/2009 | CN101359822A Transmission line single-phase adaptive reclosing implementing method based on fault point voltage |
| 02/04/2009 | CN101359821A Power supply system with function of short circuit detection |
| 02/04/2009 | CN101359029A 1-wire bus DCearth fault on-line automatic monitoring apparatus |
| 02/04/2009 | CN100459368C Power type battery group uniformly discharging control method and device thereof |
| 02/04/2009 | CN100459356C Split-phase current phase differential protecting method for extra-high voltage transmission line |
| 02/04/2009 | CN100459355C Transmission line distance protecting method |
| 02/04/2009 | CN100459354C Safety device for preventing heavy current discharge of direct current electricity output |
| 02/04/2009 | CN100459353C Electric machine protective apparatus |
| 02/04/2009 | CN100459350C Undervoltage warning method, undervoltage warning circuit and switching power supply |
| 02/03/2009 | US7486489 System and method for speed control and stall protection combination for electric motors such as in engine cooling applications |
| 02/03/2009 | US7486082 Anomaly detection in inverter system |
| 02/03/2009 | US7486052 Controller for vehicle AC generator |
| 02/03/2009 | US7486051 Charging and discharging control circuit, and charging type power supply device |
| 02/03/2009 | US7486038 Motor control method and motor control system |
| 01/29/2009 | WO2009014143A1 Charge monitoring device |
| 01/29/2009 | WO2009012809A1 Method and protection device for a power network accounting for route switching in a telecommunication network |
| 01/29/2009 | WO2009012800A1 Protective device and method for operating a protective device |
| 01/29/2009 | WO2009012799A1 Method for locating a ground fault according to the distance protection principle and electric distance protection device |
| 01/29/2009 | US20090027815 Protective Device Having a Circuit Breaker, in Particular a Low-Voltage Circuit Breaker |
| 01/29/2009 | US20090027814 Electronic tripping unit for a motor-circuit breaker of an electric motor |
| 01/29/2009 | US20090026986 Protection method for a reversible electric motor |
| 01/29/2009 | DE19911098B4 Batteriezellenpaket Battery cell pack |
| 01/29/2009 | DE19649698B4 Steuervorrichtung für eine angetriebene Absperrung A control apparatus for a driven barrier |
| 01/28/2009 | CN201188601Y Intelligent control power-saving device |
| 01/28/2009 | CN201188599Y Power-saving controller for electric motor |
| 01/28/2009 | CN201188596Y Protector for cold compressor |
| 01/28/2009 | CN201188595Y Start-up control and operation protective system for electric motor of electric automobile compressor |
| 01/28/2009 | CN201188584Y Large-capacity essential safety power supply for coal mine |
| 01/28/2009 | CN201188538Y Alarm device for current deviation of juxtaposition operation transformers |
| 01/28/2009 | CN201188352Y Mutual-inductor and protecting equipment |
| 01/28/2009 | CN101356706A Back-gate voltage generator circuit, four-terminal back gate switching FET, and charge and discharge protection circuit using same |
| 01/28/2009 | CN101355330A Protector for starting and limiting current of DC electric machine |
| 01/28/2009 | CN101355248A Protective relay system |
| 01/28/2009 | CN101355247A Method for recognizing non-integrity string running mode under half circuit breaker connection mode |
| 01/28/2009 | CN101355246A Delaying current protector |
| 01/28/2009 | CN101354570A Control system |
| 01/28/2009 | CN100456628C AC exciting control system of double feed wind power generator based on DSP with secondary frequency modulation and its working method |
| 01/28/2009 | CN100456598C Battery charging method |
| 01/28/2009 | CN100456595C Superconducting current limiting device with magnetic field assisted quenching |
| 01/28/2009 | CN100456594C Selective leakage determining method and leakage determining circuit |
| 01/28/2009 | CN100456593C Control circuit for intelligent breaker loop protection |
| 01/28/2009 | CN100456592C Method for error handling in a converter circuit for wiring of three voltage levels |
| 01/28/2009 | CN100456591C Low current electric motor protector |
| 01/28/2009 | CN100456203C Portable terminal and USB device |
| 01/27/2009 | US7483249 Overvoltage protective device for DC motor |
| 01/27/2009 | US7483247 Multi-stack power supply clamp circuitry for electrostatic discharge protection |
| 01/27/2009 | CA2257410C Method and device for testing differential protection relays or differential protection relay systems |
| 01/22/2009 | WO2009011749A1 Mitigation of propagation of thermal runaway in a multi-cell battery pack |
| 01/22/2009 | WO2009010084A1 Data concentrator, redundant protection system, and method for monitoring an object to be protected in an electric power grid |
| 01/22/2009 | WO2007075710A3 Active rectification of alternator output without using a position sensor |
| 01/22/2009 | US20090021966 Methods and apparatus for a cascade converter using series resonant cells with zero voltage switching |
| 01/22/2009 | US20090021871 Energy Storage Pack Having Overvoltage Protection and Method of Protection |
| 01/22/2009 | US20090021204 Method and apparatus for thermal sensing in an electrically commutated motor |
| 01/22/2009 | US20090021077 Device, system and method for charger switch adaptor |
| 01/22/2009 | US20090021022 Stall controller and triggering condition control features for a wind turbine |
| 01/22/2009 | US20090019847 Stepping Actuator and Method of Fabrication |
| 01/22/2009 | DE102007033427A1 Anordnung mit einem Gehäuse Arrangement with a housing |
| 01/21/2009 | EP2017951A2 Restart control of an A.C. motor drive |
| 01/21/2009 | EP2015956A1 Detection and delimitation of maximum stator currents |
| 01/21/2009 | CN201185398Y Multifunctional solar mobile power supply |
| 01/21/2009 | CN201185345Y Three-phase four-wire zero-lack protector for low-voltage network |
| 01/21/2009 | CN201185344Y Electrical distribution busbar protective device |
| 01/21/2009 | CN201185343Y Low-voltage protection device for vehicle-mounted television set |
| 01/21/2009 | CN201185342Y Phase-lacking detection protector for hoisting electric machine of groove-controlled machine |
| 01/21/2009 | CN201185341Y Electric machine overload protection circuit for electric body-building device |
| 01/21/2009 | CN201185340Y Anti-theft alarm protecting equipment |
| 01/21/2009 | CN201185339Y AC sampling module |
| 01/21/2009 | CN201185338Y High-temperature protective circuit for vehicle-mounted television set |
| 01/21/2009 | CN201184898Y On-line real-time identification apparatus for winding parameter of power transformer |
| 01/21/2009 | CN101351941A Virtual closed loop power distribution system and method |
| 01/21/2009 | CN101350549A Running apparatus for ceiling fan |
| 01/21/2009 | CN101350532A Over-voltage protected battery charger with bypass |
| 01/21/2009 | CN101350521A Fault distance-finding method for nonuniform zero sequence mutual inductance same-lever aerial multi-back line |
| 01/21/2009 | CN101350520A Protection control system and method base on electric network synthesis information |
| 01/21/2009 | CN101350519A Real-time synchronization equipment for protecting optical fibre longitudinal difference |
| 01/21/2009 | CN101350518A Method for processing sampling value of digitalization protection test control apparatus |
| 01/21/2009 | CN101350517A Assembly with a housing |
| 01/21/2009 | CN101350516A Circuit and method for protecting energy storage apparatus |
| 01/21/2009 | CN101350515A Amalgamation system for prewarning healthiness and protecting relay of large-sized asynchronous motor |