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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04/20/2005 | CN1198378C Protective circuit of switch type power source |
04/19/2005 | US6882520 Solid electrolytic capacitors |
04/19/2005 | US6882515 Operation circuit and power switching device employing the operation circuit |
04/19/2005 | US6882123 System and method to simulate and evaluate management algorithms of a panel or mobile window, activated by an electric motor, with anti-crushing security and programme for its execution |
04/15/2005 | CA2484186A1 Superconducting current limiting device with magnetic field assisted quenching |
04/14/2005 | WO2004109885A3 Self-learning electronic fuse |
04/14/2005 | US20050078424 Overvoltage protection circuit, and power source, power supply system and electronic apparatus using the overvoltage protection circuit |
04/14/2005 | US20050077881 Methods, systems and apparatus for regulating frequency of generated power using flywheel energy storage systems with varying load and/or power generation |
04/14/2005 | DE10342598A1 Verfahren und Schaltungsanordnung zur Schnellausschaltung von Niederspannungs-Leistungsschaltern Method and circuit arrangement for rapidly tripping low-voltage circuit breakers |
04/14/2005 | DE10342597A1 Verfahren und Schaltungsanordnung zur Überwachung von Niederspannungs-Leistungsschaltern vorgeordneten Sicherungen Method and circuit arrangement for monitoring low-voltage circuit breakers upstream fuses |
04/14/2005 | DE102004043559A1 Power window driving apparatus for use in a vehicle has diode which is provided between a positive side of the power supply and the control circuit to protect the control circuit when the power supply is inversely connected |
04/13/2005 | EP1522131A2 Circuit and method for protecting against overload of an electric motor |
04/13/2005 | CN2692901Y Energy-saver for electric machine |
04/13/2005 | CN1196938C Power cable lines |
04/12/2005 | US6879476 Electrostatic discharge circuit and method therefor |
04/12/2005 | US6879260 Load indicator |
04/07/2005 | US20050073791 Surge protection of capacitor used for AC power filtering |
04/07/2005 | US20050073790 Microdevice, microdevice array, amplifying circuit, memory device, analog switch, and current control unit |
04/07/2005 | US20050073780 Fault detector for two line power distribution system and protection apparatus incorporating the same |
04/07/2005 | DE10338189A1 Schutzschaltung für ein Netzteil, sowie Netzteil mit diesbezüglicher Schutzschaltung Protection circuit for a power supply and power supply with this regard protection circuit |
04/06/2005 | EP1520331A1 Method and circuit for limiting an overvoltage |
04/06/2005 | CN2691136Y Electronic power saving device |
04/06/2005 | CN1604473A Electric window drive apparatus |
04/06/2005 | CN1603851A Running and loading detection method for converter |
04/05/2005 | US6876531 Device for detecting failure of field effect transistor |
04/05/2005 | US6876177 Load dump transient voltage controller |
04/05/2005 | US6876166 Electric-motor drive |
04/05/2005 | US6876165 Method for operating an electric motor, and an electric motor for carrying out such a method |
04/05/2005 | US6876102 Diode fault detection system and method |
03/31/2005 | WO2005029667A2 Regulating the frequency of generated power using flywheel energy storage systems |
03/31/2005 | WO2005029646A2 Battery cable with provisions for integral circuit protection |
03/31/2005 | US20050068794 Active clamping circuit and power supply system using the same |
03/31/2005 | US20050068701 Resistive superconducting fault current limiter |
03/31/2005 | US20050067988 Motor driving system |
03/31/2005 | US20050067987 Power-window jamming preventing apparatus |
03/31/2005 | DE10339457A1 Stellantrieb mit Steuereinheit und Verfahren zum Betreiben des Stellantriebs Actuator with a control unit and method of operating the actuator |
03/31/2005 | CA2535458A1 Methods, systems and apparatus for regulating frequency of generated power using flywheel energy storage systems with varying load and/or power generation |
03/30/2005 | CN2689561Y Multifunctional electronic earth controlling switch of vehicle |
03/30/2005 | CN2689560Y Negative sequential differential flow comprehensive braker for preventing multi-branch transformer differential protector from malfunction |
03/30/2005 | CN2689559Y Positive sequential differential flow comprehensive braker for preventing multi-branch transformer differential protector from malfunction |
03/30/2005 | CN2689558Y Maximum differential comprehensive braker for preventing multi-branch transformer differential protector from malfunction |
03/30/2005 | CN2689557Y Split-phase comprehensive apparatus for preventing multi-branch transformer differential protector from malfunction |
03/30/2005 | CN2689556Y Three-phase braker for preventing multi-branch transformer differential protector from malfunction |
03/30/2005 | CN2689555Y Split-phase braker for preventing multi-branch transformer differential protector from malfunction |
03/30/2005 | CN2689554Y Split-phase braker for preventing multi-branch transformer differential protector from malfunction |
03/30/2005 | CN2689553Y Maximum differential flow braker for preventing transformer differential protector from malfunction by fault component |
03/30/2005 | CN2689552Y Three-phase braker for preventing transformer differential protector from malfunction by fault component |
03/30/2005 | CN2689551Y Comprehensive differential flow braker for preventing transformer differential protection from malfunction |
03/30/2005 | CN2689550Y Three-phase brake for preventing transformer differential prevent from malfunction |
03/30/2005 | CN2689428Y Internal electric arc fault detecting protector in switching cabinet |
03/30/2005 | CN2689416Y Lightening-proof over voltage protector for telephone line interface end in telephone communicating system |
03/30/2005 | CN1601848A Digital dummy method of power system |
03/30/2005 | CN1601841A Traveling wave protective data acquisition plan considering asynchronous switching of 3-phase breaker |
03/29/2005 | US6873508 Protective relay system |
03/29/2005 | US6873504 System and method for detecting loss of phase in a compressor system |
03/29/2005 | US6873142 Transformer over-current protection with RMS sensing and voltage fold-back |
03/29/2005 | US6873131 Dual voltage electric motors |
03/29/2005 | CA2283533C Movable barrier operator |
03/24/2005 | WO2005027296A1 Circuit arrangement for rapidly switching off low-voltage circuit breakers |
03/24/2005 | WO2005027295A1 Method and circuit arrangement for monitoring fuses connected upstream from low-voltage power circuit breakers |
03/24/2005 | WO2005027294A1 Method and circuit arrangement for rapidly switching off low-voltage circuit breakers |
03/24/2005 | US20050062542 Fast-response current limiting |
03/24/2005 | DE10340286A1 Elektronisch gesteuerter Verletzungsschutz für einen bahngesteuerten Fensterheber, insbesondere mit Seilantrieb, Verfahren zum Anpassen der Steuerungseinrichtung an eine gegebene Kinematik sowie Kinematik für einen solchen Fensterheber Electronically controlled injury protection for a path-controlled windows, especially with cable drive method for adapting the controller to a given kinematics and kinematics of such windows |
03/23/2005 | CN2687944Y Control cabinet for three-phase alternating-cuttent motor |
03/23/2005 | CN2687923Y Overhead circuit parallel gap lightning protection device |
03/23/2005 | CN2687922Y Circuit for limiting input power at output end overcurrent for switching power supply |
03/23/2005 | CN2687921Y Electronic circuit structure of open-phase proterctor for three-phase motor |
03/23/2005 | CN2687920Y Three-phase comprehensive brakedevice for preventing multi-branch transformer differential protection from being malfunction |
03/23/2005 | CN2687919Y Positive sequence synthetic brake device for preventing multi-branch differential protection from being malfunction |
03/23/2005 | CN2687918Y Maximum different-current brake device for preventing multi-branch tansformer differential protection from being malfunction |
03/23/2005 | CN2687917Y Split-phase brake device for preventing transformer differential protection from being malfunction using failure component |
03/23/2005 | CN2687916Y Maximum different-current brake device for preventing transformer differential protection from being malfunction |
03/23/2005 | CN2687915Y Split-phase brake device for preventing transformer differential protection from being malfunction |
03/23/2005 | CN1599182A Faulty phase selection element for transmission line of electric system |
03/23/2005 | CN1599181A Negative-sequence longitudinal differential element for electric system |
03/23/2005 | CN1599180A Faulty range-measuring element for power system |
03/23/2005 | CN1599179A Protection circuit for electric motor |
03/23/2005 | CN1194229C Battery power source protecting device for electromotive device |
03/22/2005 | USRE38714 Electrical safety device |
03/22/2005 | US6870339 Method for operating an electrical drive unit |
03/22/2005 | US6870334 Movable barrier operator auto-force setting method and apparatus |
03/22/2005 | US6870332 Multi-functional motor control device |
03/22/2005 | CA2159928C Circuit breaker remote closing operator |
03/17/2005 | WO2005025025A2 Control device for an alterno-starter, particularly for a motor vehicle |
03/17/2005 | US20050057217 Secondary battery charging method and apparatus |
03/16/2005 | CN2686180Y Electric Circuit protector |
03/16/2005 | CN2686179Y Electric current overload protective circuit for plastic banbury |
03/16/2005 | CN2686178Y Electrocar block power-off protection circuit |
03/16/2005 | CN1595786A Electric windows driving apparatus |
03/16/2005 | CN1595752A Optimized method of main protective configuration for internal fault of largesize motor stator coil |
03/16/2005 | CN1595751A Grounding protection method for stator of power generator with neutral point grounded via arc suppression coil |
03/16/2005 | CN1595715A Secondary battery charging method and apparatus |
03/15/2005 | US6867958 Loop restoration scheme for distribution feeders |
03/15/2005 | US6867955 ARC discharge protection apparatus |
03/15/2005 | US6867652 Fast-response current limiting |
03/15/2005 | US6867577 Differential protective method to generate an error signal characteristic of a fault current |
03/15/2005 | US6867567 Battery state monitoring circuit |
03/15/2005 | US6867563 Jamming protection device for moving member |
03/15/2005 | CA2365474C Automatic flashover protection for locomotive traction motors |
03/10/2005 | WO2005022715A1 Switching device |