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