| 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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| 08/26/2009 | EP2092623A1 A method and an apparatus for protecting a bus in a three-phase electrical power system |
| 08/26/2009 | EP2092622A1 Rectifier with short circuit current limiting |
| 08/26/2009 | EP2092361A1 Detecting quench in a magnetic resonance examination system |
| 08/26/2009 | EP2092360A1 Preventing quench in a magnetic resonance examination system |
| 08/26/2009 | CN201298821Y Slippage controller with an over-speed protection function |
| 08/26/2009 | CN201298735Y Lithium-ion battery protection device and an application device thereof |
| 08/26/2009 | CN201298732Y An intelligent demarcation grounding protection apparatus based on ordinary column circuit breaker |
| 08/26/2009 | CN201298731Y Open-phase protection circuit of three-phase power supply source |
| 08/26/2009 | CN201297267Y Control device for blower of automobile air conditioner |
| 08/26/2009 | CN101517853A Inverter with improved overcurrent protection circuit, and power supply and electronic ballast therefor |
| 08/26/2009 | CN101517852A 放电器和放电控制方法 Discharger and discharge control method |
| 08/26/2009 | CN101515758A Device for protecting a speed controller against overcurrent |
| 08/26/2009 | CN101515716A Current protection method of feeder line containing distributed power |
| 08/26/2009 | CN101515715A WAN-based method for protecting feeder line containing distributed power |
| 08/26/2009 | CN101515714A Kickback voltage suppression circuit |
| 08/26/2009 | CN101515713A Method for designing electronic programming menu of motor protector |
| 08/26/2009 | CN100533939C Apparatus for power conversion in electric rolling stock |
| 08/26/2009 | CN100533937C DC-AC converter for inhibiting surge current dynamically |
| 08/26/2009 | CN100533906C A protection system for medium-voltage potential transformers |
| 08/26/2009 | CN100533905C Method for preventing high tension power line single phase coinciding with permanent fault |
| 08/26/2009 | CN100533902C A method and an apparatus for supervising the operation of current transformers |
| 08/26/2009 | CN100533897C Apparatus for high surge voltage protection |
| 08/26/2009 | CN100532838C Protection device for electric compressor |
| 08/25/2009 | US7580232 Arc detection system and method |
| 08/25/2009 | US7579812 Modulation control of power generation system |
| 08/25/2009 | US7579811 Battery pack, battery protection processing apparatus and control method thereof |
| 08/25/2009 | US7579802 Collision monitoring system |
| 08/20/2009 | WO2009101333A2 Electronic device, especially for motor vehicle |
| 08/20/2009 | US20090206802 Abnormality detection apparatus |
| 08/20/2009 | DE202009008078U1 Spannungsstabilisiermodul für Fahrraddynamo Spannungsstabilisiermodul for bicycle dynamo |
| 08/20/2009 | DE19622049B4 Startschaltung für einen bürstenlosen Gleichstrommotor, die beim Starten eine Felderregung während wechselnden Mehrphasenkommutierungszuständen unterdrückt Start circuit for a brushless DC motor, which suppresses field excitation during changing Mehrphasenkommutierungszuständen when starting |
| 08/20/2009 | DE102008026621A1 Single or multi-phase electrical circuit for switching current produced via alternating current or three-phase power controller, has controller with valves designed as disconnectable valves, where device is connected parallel to valves |
| 08/20/2009 | DE102008008047A1 External watchdog for monitoring function of protection device of low-voltage switching device, has output designed for connection to output of switching device for accepting signals produced by microcontroller or integrated circuit |
| 08/19/2009 | EP2091123A2 An earthing arrangement for a DC electrical system and a method of operating an earthing arrangement for a DC electrical system |
| 08/19/2009 | EP2091122A1 Overvoltage protection circuit |
| 08/19/2009 | EP1561946B1 Generator with utility fault ride-through capability |
| 08/19/2009 | CN201294474Y Energy-saving control system for motor soft startup |
| 08/19/2009 | CN201294470Y Phase control intelligent electricity-saving controller for three-phase asynchronous motor |
| 08/19/2009 | CN201294456Y Protection circuit for inversion current AC output |
| 08/19/2009 | CN201294455Y Power-supply module for machine controller and machine controller |
| 08/19/2009 | CN201294400Y Portable universal charger |
| 08/19/2009 | CN201294376Y Safety device for brake division loop of circuit breaker |
| 08/19/2009 | CN201294375Y On-off coil protector for circuit breaker |
| 08/19/2009 | CN201294374Y APD drive circuit with over current protection and controllable driving voltage |
| 08/19/2009 | CN201294373Y Automatic recovery power supply circuit for battery protection |
| 08/19/2009 | CN201294372Y 多功能开关电源保护装置 Multifunction switch power protection device |
| 08/19/2009 | CN201294371Y Phase-off protector for motor |
| 08/19/2009 | CN201294370Y Intelligent control protection and management device |
| 08/19/2009 | CN201294369Y Protector for ignition and running of intelligent motor |
| 08/19/2009 | CN101512862A Current limiter of short circuit current |
| 08/19/2009 | CN101512705A Switch apparatus especially compact starter |
| 08/19/2009 | CN101510747A Excitation control system architecture and control method for marine diesel brushless double fed shaft generator |
| 08/19/2009 | CN101510732A Control method for electron beam punching machine acceleration high-voltage power supply and power supply device |
| 08/19/2009 | CN100530892C Method for sampling, controlling and transmitting data synchronously |
| 08/19/2009 | CN100530884C Self-adaption route selection method for single-phase ground fault of power distribution network based on transient zero sequence current |
| 08/19/2009 | CN100530883C Route selection method for single-phase ground fault of two-phase TA power distribution network |
| 08/19/2009 | CN100530882C Method and device to monitor a power output stage |
| 08/19/2009 | CN100530881C Cascade active voltage-stabilizing controller of power switch |
| 08/19/2009 | CN100529709C Method for detecting shafting torsional oscillation mode of generator set |
| 08/18/2009 | US7577005 Method for recognizing the load of an island inverter and island inverter |
| 08/18/2009 | US7577003 Switching power supply |
| 08/18/2009 | US7576520 Power generation control device for vehicle generator |
| 08/18/2009 | US7576519 System and method for electric current and power monitoring and control of a generator |
| 08/18/2009 | US7576443 Method and apparatus for generating electric power |
| 08/13/2009 | WO2009099659A2 Protective circuit for energy-strorage device |
| 08/13/2009 | WO2008083957A3 Motor-driven adjusting device and method for controllling the same |
| 08/13/2009 | US20090201705 Energy converting apparatus, and semiconductor device and switching control method used therein |
| 08/13/2009 | US20090200878 Power transmission tool and system |
| 08/13/2009 | DE10302426B4 Vorrichtung zum Detektieren von Hindernissen für Fenster mit elektrisch reguliertem Scheibenheber Device for detecting obstacles for windows with electrically regulated power window |
| 08/13/2009 | DE102009004651A1 Verfahren zur spannungsbasierten Detektion, Verifizierung und/oder Identifizierung eines Gleichtakt-AC-Fehlers Method for voltage-based detection, verification and / or identification of a common mode AC error |
| 08/13/2009 | DE102008008536A1 Verfahren für die Steuerung einer elektrischen Maschine und Steuereinrichtung A method for controlling an electric machine and control device |
| 08/13/2009 | DE102008008124A1 Motor system, has gate driver unit electrically connected with optocoupler switch, power unit electrically connected with driver unit and fed with direct current, and motor electrically connected with power unit |
| 08/12/2009 | EP2088117A1 High power switch device and a power pack comprising a high power switch device. |
| 08/12/2009 | EP2087570A1 Submarine direct-current network comprising high-power energy accumulators |
| 08/12/2009 | EP2087569A2 Adaptive relaying controlled by autonomous event detection |
| 08/12/2009 | CN201290028Y Synthesis monitoring system for shortcut type multifunctional networking cable line |
| 08/12/2009 | CN201290023Y Intelligent automobile standby power |
| 08/12/2009 | CN201290021Y Control protection circuit for charging and discharging lithium battery set |
| 08/12/2009 | CN201290005Y Integrated protector for electric appliance |
| 08/12/2009 | CN201290004Y Protection circuit for stepper motor power supply |
| 08/12/2009 | CN201290003Y Overheat protector for motor bearing |
| 08/12/2009 | CN101507073A Protective circuit for protection of an appliance, in particular an electric motor, against thermal overloading |
| 08/12/2009 | CN101505093A Multipath output electrical power suitable for space environment |
| 08/12/2009 | CN101505063A Wind power generation system |
| 08/12/2009 | CN101505053A User demarcation circuit breaker set apparatus and protection method |
| 08/12/2009 | CN101505052A Method for implementing middle phase zero division zero sum by control protection switch |
| 08/12/2009 | CN101505051A Turn-to-turn short circuit protection method for generator stator based on negative sequence distribution |
| 08/12/2009 | CN101505050A Electronic acceleration overload relay and using method therefor |
| 08/12/2009 | CN101505049A Protection apparatus and detection method for AC circuit open loop |
| 08/12/2009 | CN101505040A Live conductor stringing and splicing method and apparatus |
| 08/12/2009 | CN100526903C Flexible generating device for AC motor complex fault |
| 08/12/2009 | CN100526738C Apparatus and method for detecting phase state |
| 08/12/2009 | CN100526004C Method for switching off an electric machine tool when blocked, and an electric machine tool |
| 08/11/2009 | US7573732 Protective circuit and method for multi-level converter |
| 08/11/2009 | US7573731 Active-clamp current-source push-pull DC-DC converter |
| 08/11/2009 | US7573688 Methods and systems for high current semiconductor diode junction protection |
| 08/11/2009 | US7573315 Control device and method of operating the control device having controller chips and change-over unit |
| 08/06/2009 | WO2009097207A2 System and method for ground fault detection and interruption |
| 08/06/2009 | WO2009095040A1 Distance protection and method for monitoring an electrical power transmission line |
| 08/06/2009 | US20090196764 High frequency electric-drive with multi-pole motor for gas pipeline and storage compression applications |