| 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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| 04/20/2011 | CN101097818B Distance protection relay and method |
| 04/20/2011 | CN101083402B Method of charging a rechargeable battery and protection circuit for a rechargeable battery |
| 04/20/2011 | CA2717953A1 String and system employing direct current electrical generating modules and a number of string protectors |
| 04/19/2011 | US7929323 Method and apparatus for pre-charging power converters and diagnosing pre-charge faults |
| 04/19/2011 | CA2639793C Circuit for protecting against shorts in starter motor and battery charging cables |
| 04/14/2011 | WO2011042596A1 Switching an inductive load |
| 04/14/2011 | WO2011042237A1 Method for operating a drive unit, and a drive unit |
| 04/14/2011 | WO2011042070A1 Tap changer |
| 04/14/2011 | US20110085360 Method and apparatus providing a multi-function terminal for a power supply controller |
| 04/14/2011 | US20110084643 Method and apparatus for failsafe monitoring an electromotive drive |
| 04/14/2011 | US20110084642 Method and apparatus for failsafe monitoring an electromotive drive |
| 04/14/2011 | DE202010016526U1 Schaltung zum Schutz gegen Verpolung Circuit for protection against reverse polarity |
| 04/14/2011 | DE102009049026A1 Method for increasing driving force of control drive that is utilized to adjust lighting width of headlight in motor vehicle, involves switching off and on actuator in case of blockade by temperature rise protection of integrated circuit |
| 04/14/2011 | DE102009048944A1 Verfahren und Vorrichtung zum fehlersicheren Überwachen eines elektromotorischen Antriebs Method and apparatus for monitoring a fail-safe electric motor drive |
| 04/13/2011 | EP2309634A1 Power converter employing normally on fets |
| 04/13/2011 | EP2307225A1 Protection against load dump on multiple automobile interfaces |
| 04/13/2011 | EP2114007B1 Power-system with utility fault ride-through capability |
| 04/13/2011 | CN201797476U Electric vehicle motor controller |
| 04/13/2011 | CN201797448U Full PLC-based high-voltage pulse power supply |
| 04/13/2011 | CN201797436U Light-triggered crowbar system of pulse step modulation power supply |
| 04/13/2011 | CN201797374U Intelligent protection device for neutral line fault and open phase |
| 04/13/2011 | CN201797373U Medium and high voltage power supply control system with pre-order of electrical quantity |
| 04/13/2011 | CN201797365U Charger for storage batteries of electric vehicles |
| 04/13/2011 | CN201797354U Rectification and unloading integrated wind power generation main circuit |
| 04/13/2011 | CN201797345U Four-level electric quantity movable power supply with trans-flash (TF) card |
| 04/13/2011 | CN201797342U Movable power supply with three levels of electric quantity |
| 04/13/2011 | CN201797311U Intelligent protective loop architecture system of power supply looped network |
| 04/13/2011 | CN201797310U N pole output protector of monitoring breaker |
| 04/13/2011 | CN201797309U Integrated protection, measurement and control device |
| 04/13/2011 | CN201797308U Microcomputer arc light protection device |
| 04/13/2011 | CN201797307U 保护控制电路 Protection control circuit |
| 04/13/2011 | CN201797306U Open-phase protection circuit of three-phase motor |
| 04/13/2011 | CN201797305U Open-circuit protection device of three-phase alternating current motor |
| 04/13/2011 | CN201797304U Control box special for oil well motor |
| 04/13/2011 | CN201797303U Motor protection circuit |
| 04/13/2011 | CN201797302U Protective device for lifting of heavy crown block |
| 04/13/2011 | CN201797301U Overload protecting device for electric furnace transformer |
| 04/13/2011 | CN201797300U Non-inductive non-contact photoelectric isolated intrinsically-safe remote control pilot circuit |
| 04/13/2011 | CN201796570U Outdoor advertisement solar light box |
| 04/13/2011 | CN102017351A Fault detection for battery chargers |
| 04/13/2011 | CN102017350A Safety switch for secondary battery for electric vehicle and charging/discharging system for secondary battery for electric vehicle using the same |
| 04/13/2011 | CN102017349A Arc detector and associated method for detecting undesired arcs |
| 04/13/2011 | CN102017030A Method and device for determining the relative humidity of an insulating liquid filled electric apparatus |
| 04/13/2011 | CN102013802A BOOST circuit with short circuit protection function |
| 04/13/2011 | CN102013723A Three-phase voltage stabilizer for long-distance temporary power supply of single-phase generator |
| 04/13/2011 | CN102013693A Safety grid connection method for generator set and control loop |
| 04/13/2011 | CN102013671A Transient travelling wave amplitude integral type superspeed bus protection system and method thereof |
| 04/13/2011 | CN102013670A Split type high-power lithium ion battery pack protection system |
| 04/13/2011 | CN102013669A Adjustable overheat protection circuit in switching power supply |
| 04/13/2011 | CN102013668A Method for implementing overload inverse-time protection of alternating-current motor |
| 04/13/2011 | CN102013667A Comprehensive protector of electric motor |
| 04/13/2011 | CN102013666A Three-phase power amplifier and reversing switch device used for the same |
| 04/13/2011 | CN102013665A Motor differential protection method under a mode for dragging motor by high-voltage frequency converter |
| 04/13/2011 | CN102013664A Protection device for transformer |
| 04/13/2011 | CN102013663A Protector for complex voltage operating circuit at high and low pressure sides |
| 04/13/2011 | CN102013662A Protector of power transformer |
| 04/13/2011 | CN101562347B Vanadium battery charge-discharge control cabinet |
| 04/13/2011 | CN101534002B Data synchronization method for ET-connected optical-fiber differential protection devices |
| 04/13/2011 | CN101505051B Turn-to-turn short circuit protection method for generator stator based on negative sequence distribution |
| 04/13/2011 | CN101419880B Thermal protector for three-phase motor |
| 04/13/2011 | CN101252274B Same tower double back transmission line fault distance measuring time domain method using single end current flow |
| 04/13/2011 | CN101212133B Plastic-shell electromechanical integrated three-phase AC motor protector with energy storage and impact device |
| 04/13/2011 | CN101091295B Method and device for fault detection in an n-winding three-phase power transformer |
| 04/12/2011 | US7925388 Remotely controllable wireless energy control unit |
| 04/12/2011 | US7924582 Switching device and method, in particular for photovoltaic generators |
| 04/12/2011 | US7924542 Power supply controller and semiconductor device |
| 04/12/2011 | US7924536 Short protection device for alternator |
| 04/12/2011 | US7923976 Fault protection circuit, method of operating a fault protection circuit and a voltage regulator employing the same |
| 04/12/2011 | CA2468591C Obstacle detector-responsive movable barrier operator apparatus and method |
| 04/07/2011 | WO2011041356A2 System and method for polyphase ground-fault circuit-interrupters |
| 04/07/2011 | WO2011039074A1 Communication network for a low voltage electric switchgear |
| 04/07/2011 | US20110080759 Feeding system for an inductive load from an energy source with variable power |
| 04/07/2011 | US20110080676 Ground fault sensing device |
| 04/07/2011 | US20110080127 Apparatus and method for driving rotary machine |
| 04/07/2011 | US20110080126 Motor drive device |
| 04/07/2011 | DE102010037045A1 Betriebssteuervorrichtung An operation control device |
| 04/07/2011 | DE102009047980A1 Activation control device for controlling separation switch device in current path between photo voltaic system and low voltage network, has program part enabling switching-on and off separation switch device in time controlled manner |
| 04/07/2011 | CA2775883A1 System and method for polyphase ground-fault circuit-interrupters |
| 04/06/2011 | EP2306607A2 Device and method to protect an electric power distribution network against current faults |
| 04/06/2011 | EP2305439A2 Electric power tool |
| 04/06/2011 | EP2304857A1 Fast power swing unblocking method and apparatus for distance protection in power system |
| 04/06/2011 | CN201789657U Interruptible power supply system |
| 04/06/2011 | CN201789469U Device for controlling motor through leading multi-channel battery pack to be connected in parallel with input frequency conversion for electric vehicles |
| 04/06/2011 | CN201789463U Brushless controller for electric bike |
| 04/06/2011 | CN201789458U Smooth soft start device of direct-current motor |
| 04/06/2011 | CN201789320U Electric automobile intelligent timed charging device |
| 04/06/2011 | CN201789284U Interphase overvoltage protector of indirect grounding system |
| 04/06/2011 | CN201789279U Special overvoltage protection device for low-voltage universal circuit breaker |
| 04/06/2011 | CN201789278U Multi-channel automatic changeover switch |
| 04/06/2011 | CN201789277U Insulating circuit |
| 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 | CN201789274U Intelligent monitor protective device of motor |
| 04/06/2011 | CN201789273U Protective system for electric motors |
| 04/06/2011 | CN201789272U Relay protection circuit preventing transformer differential protection malfunction |
| 04/06/2011 | CN201789271U Phase lack protection device of combined transformer |
| 04/06/2011 | CN201788808U Power transformer |
| 04/06/2011 | CN201786526U Internal combustion engine startup motor protector |
| 04/06/2011 | CN102007681A Drive circuit for a DC motor, comprising an h-bridge and a motor braking circuit |
| 04/06/2011 | CN102006007A Motor control system of electric automobile |