| 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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| 07/03/2002 | CN2498774Y Computer relay protector for motor |
| 07/03/2002 | CN1356752A Digital travelling wave protection method for power transmission line and its relay and protection system |
| 07/02/2002 | US6414855 Power converter with power converter element and controller formed on different semiconductor substrates |
| 06/27/2002 | WO2002051227A1 Fan protection |
| 06/27/2002 | WO2002050972A1 Vsc-converter |
| 06/27/2002 | WO2002050477A1 Controller for a inrush current of air-conditioner compressor and thereof controlling method |
| 06/27/2002 | US20020080542 Apparatus and method for protecting a load from fluctuations in supply voltage |
| 06/27/2002 | US20020080539 Loop restoration scheme for distribution feeders |
| 06/27/2002 | US20020080535 Multiple ground fault trip function system and method for same |
| 06/27/2002 | US20020079869 Charge/discharge protection circuit for protecting a charge control FET from overheating |
| 06/27/2002 | US20020079865 Devices and methods for protection of rechargeable elements |
| 06/27/2002 | US20020079519 Power semiconductor device, power arm and inverter circuit |
| 06/27/2002 | DE10160106A1 Relaisverschweißungserfassungsvorrichtung und -erfassungsverfahren Relaisverschweißungserfassungsvorrichtung and -erfassungsverfahren |
| 06/26/2002 | EP1216500A1 Electronically commutatable motor comprising an electronic control unit |
| 06/26/2002 | EP1216499A1 Electronically commutable motor |
| 06/26/2002 | EP1101234B1 Device for short-circuit protection |
| 06/26/2002 | CN2497461Y No-power consumption motor comprehensive protector |
| 06/26/2002 | CN1355952A Electrical machine winding ground-fault protection system |
| 06/26/2002 | CN1355601A Safety speed monitoring system for three-phase AC transmission without sensor |
| 06/25/2002 | US6411865 System for protection zone selection in microprocessor-based relays in an electric power system |
| 06/25/2002 | US6411487 Coaxial surge protector having thermal fail-safe shunt |
| 06/25/2002 | US6411479 Arrangement for current limiting using a superconductor transformer |
| 06/25/2002 | US6411137 Load drive apparatus having parallel-connected switching devices |
| 06/25/2002 | CA2030848C Luminous tube protection circuit |
| 06/22/2002 | CA2365486A1 Apparatus and method for protecting a load from fluctuations in supply voltage |
| 06/20/2002 | WO2002049178A2 Compressor terminal fault interruption |
| 06/20/2002 | US20020076333 Heater material |
| 06/20/2002 | US20020075620 Power distribution system |
| 06/20/2002 | US20020075615 Fan protection |
| 06/20/2002 | US20020074974 Method and apparatus for overload-controlling inverter power generation apparatus |
| 06/20/2002 | US20020074962 Electric device as well as process for its operation |
| 06/20/2002 | DE10148882A1 Stator winding error detector for use with an AC motor, has multiple sensors to acquire a set of current/voltage values, processor to calculate sequence components, feed-forward neuronal network and comparator. |
| 06/20/2002 | DE10059393A1 Gleichstromversorgungseinrichtung und Verfahren zum Abschalten eines Brennstoffzellenblocks DC power supply means and method of shutting down a fuel cell block |
| 06/19/2002 | CN2496169Y Automobile motor protector |
| 06/19/2002 | CN1354561A Insulated gate bipolar transistor IGBT drive protection circuit |
| 06/19/2002 | CN1354541A Current transformer system of current transformer component connected by D.C. intermediate loop and method for operating said system |
| 06/19/2002 | CN1354539A Intelligent remote monitoring system of transformer of distribution system |
| 06/19/2002 | CN1354487A Breaker operating device for switch |
| 06/18/2002 | US6408238 Method and apparatus of controlling a sliding roof |
| 06/18/2002 | US6407522 Method and a device for controlling the operation of an actuator unit |
| 06/13/2002 | WO2002046854A1 Power supply device, transistor driving method, recording medium |
| 06/13/2002 | WO2002025791A3 Apparatus and method for detecting a short circuit in a lighting system |
| 06/13/2002 | WO2002001324A3 Protection zone selection in an electric power system |
| 06/13/2002 | US20020071297 Higher harmonic suppressor element and DC power supply unit using the same |
| 06/13/2002 | US20020071226 Combination current sensor and relay |
| 06/13/2002 | US20020070608 Relay welding detector and detecting method |
| 06/13/2002 | DE10060284A1 Magnetanordnung mit einem aktiv abgeschirmten supraleitenden Magnetspulensytem und einem zusätzlichen Strompfad zur Streufeldunterdrückung im Quenchfall Magnet assembly with an actively shielded superconducting Magnetspulensytem and an additional current path for stray field suppression of quenching |
| 06/13/2002 | DE10059172A1 Sichere Geschwindigkeitsüberwachung für geberlose Drehstromantriebe Safe speed control for sensorless AC Drives |
| 06/13/2002 | DE10058517A1 Prevention of overheating in electrical device by controling power feed involves removing power from load if detected value exceeds desired value plus desired temperature difference value |
| 06/12/2002 | EP1213821A2 Higher harmonic suppressor element and DC power supply unit using the same |
| 06/12/2002 | EP1213591A2 Magnet arrangement with an actively screened superconducting coil system and an additional current path for the suppression of stray fields during a quench |
| 06/12/2002 | CN2495049Y Open-phase protector for three-phase motor |
| 06/12/2002 | CN1353315A Power cable lines |
| 06/11/2002 | US6405104 Fault data synchronization via peer-to-peer communications network |
| 06/11/2002 | US6404346 Method and apparatus for detecting a failed thyristor |
| 06/11/2002 | US6404158 Collision monitoring system |
| 06/06/2002 | WO2002045247A2 Direct-current power supply device and method for shutting down a fuel cell block |
| 06/06/2002 | WO2002045232A1 Inrush current limiting circuit, power source device and power conversion device |
| 06/06/2002 | WO2002045231A1 Protective equipment for a series-capacitor installation |
| 06/06/2002 | US20020067148 Electric motor drive and process for operating an electronically commutated electric motor |
| 06/06/2002 | DE10130081A1 Leistungswandler und Halbleitervorrichtung Power converter and semiconductor device |
| 06/05/2002 | EP1211774A1 Inherent safe speed monitoring for sensorless three phase current drives |
| 06/05/2002 | EP1210613A1 Method and apparatus for detecting a failed thyristor |
| 06/05/2002 | EP0740859B1 Electrostatic discharge circuit for high speed, high voltage circuitry |
| 06/05/2002 | CN2494570Y Power switch overcurrent detector for power inverter |
| 06/04/2002 | US6400110 Wiper control apparatus |
| 05/30/2002 | US20020064010 Method and apparatus for automated reconfiguration of an electric power distribution system with enhanced protection |
| 05/30/2002 | US20020063548 Safe speed monitoring for sensor-free three-phase drives |
| 05/29/2002 | EP1208626A1 Non-automatic power circuit breaker including trip mechanism which is disabled after closure of separable contacts |
| 05/29/2002 | EP1023649B1 Method and circuit for monitoring the operating condition of electric motors |
| 05/29/2002 | EP0891522A4 Methods and apparatuses for detecting surge in centrifugal compressors |
| 05/29/2002 | CN1351774A Method for overcurrent protection in a superconducting cable |
| 05/29/2002 | CN1351773A Electrical machine winding ground-fault protection system |
| 05/29/2002 | CN1351772A Electrical machine winding ground-fault protection system |
| 05/29/2002 | CN1351408A Voltage converter without electric spark |
| 05/28/2002 | US6396674 System and method for monitoring the operation of a power converter |
| 05/28/2002 | US6396279 Method and device for testing differential protection relays or differential protection relay systems |
| 05/23/2002 | WO2002006615A3 Method for operating an electrical drive unit |
| 05/23/2002 | US20020060913 Power converter with power converter element and controller formed on different semiconductor substrates |
| 05/23/2002 | DE10057166A1 Controlling adjustable vehicle roof element or similar involves compensation of application point based on increase in aerodynamic force varying with displacement according to polynomial |
| 05/23/2002 | DE10056284A1 Measurement of the loading of an electric motor used with an automatic gear or coupling system, so that overloading of the engine can be avoided and expensive heat related damage avoided |
| 05/22/2002 | EP1206828A2 Fault tolerant motor drive arrangement with independent phase connections and monitoring system |
| 05/22/2002 | EP1206824A1 Crowbar circuit verification testing system |
| 05/22/2002 | EP1206784A1 Window control apparatus |
| 05/22/2002 | EP0858687B1 Auto up window with obstacle detection system |
| 05/22/2002 | CN2492967Y Motor overload protection signal sampler |
| 05/22/2002 | CN1085426C Triple protective method of contravariant circuit insulated gate bipolar type transistor |
| 05/21/2002 | US6392857 Device and process for protecting a line of a network of electricity supply lines |
| 05/16/2002 | US20020057544 Digital protective relay system |
| 05/16/2002 | US20020057540 Semiconductor switching devices |
| 05/16/2002 | US20020057075 Power feeding apparatus, transporter and transport system |
| 05/15/2002 | CN1349294A Adaptive oscillation fault opening method |
| 05/15/2002 | CN1349102A Method and devie for testing fault on stator winding of an AC motor |
| 05/14/2002 | US6388426 Battery power source protecting device for an electromotive device |
| 05/14/2002 | US6388408 Motor current sensing in electric power tools |
| 05/09/2002 | US20020056134 Transmission/reception integrated radio-frequency apparatus |
| 05/09/2002 | US20020053889 Exciter and electronic regulator for rotating machinery |
| 05/08/2002 | EP1203434A1 Method and apparatus for detecting a failed thyristor |
| 05/08/2002 | CN2490748Y Quickly overcurrent protection device for dc-to-ac converter |
| 05/08/2002 | CN2490747Y Dynamic electric machine switch |