| 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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| 05/12/2004 | CN1149332C Method for limiting closing force of movable components |
| 05/11/2004 | US6735098 Inrush current limiting circuit, power source device and power conversion device |
| 05/11/2004 | US6734653 Voltage regulator for alternator and method of controlling power generation of alternator |
| 05/06/2004 | US20040085695 Method and control system for controlling electric motors |
| 05/06/2004 | US20040085120 Eliminating defective decoupling capacitors |
| 05/06/2004 | US20040085087 Method for error detection in a drive mechanism |
| 05/06/2004 | US20040085075 Overload current protection device using magnetic impedance element |
| 05/06/2004 | US20040085051 Static excitation system having capability of eliminating shaft vibrations of a generator and overvoltage when underexited |
| 05/06/2004 | EP1416777A2 Protection device for transformers, particularly for supplying power to lamps |
| 05/06/2004 | EP1416624A1 Method and control system for controlling electric motors |
| 05/06/2004 | EP1416603A1 Protection of an electric power transmission network |
| 05/06/2004 | EP1416536A2 Eliminating defective decoupling capacitors |
| 05/06/2004 | DE10247905A1 Verfahren zum Hochfahren eines Wellenstranges sowie Vorrichtung zur Durchführung des Verfahrens A method for powering up a shaft assembly as well as apparatus for carrying out the method |
| 05/05/2004 | CN1493946A Fool multifunction water pump control and protective device |
| 05/05/2004 | CN1148773C Device for short-circuit protection |
| 05/04/2004 | US6731655 Current differential relay device |
| 05/04/2004 | US6731485 Digital power inverter |
| 05/04/2004 | US6731481 Relaying method for protecting transformers |
| 05/04/2004 | US6731098 Method and apparatus for sensing variable currents within the alternator of a genset that employs an amplifier and a switched feedback resistance |
| 04/29/2004 | WO2004036731A1 Method for running-up a shaft assembly and device for carrying out the method |
| 04/29/2004 | US20040080961 Power supply capable of protecting electric device circuit |
| 04/29/2004 | US20040080888 Controlled rectifier bridge, control system, and method for controlling rectifier bridge by disabling gate control signals |
| 04/29/2004 | US20040080884 Bus total overcurrent system for a protective relay |
| 04/29/2004 | US20040080878 Protection device for transformers particularly for supplying power to lamps |
| 04/29/2004 | US20040080333 Method and apparatus for measurement of the winding temperature of a drive motor |
| 04/29/2004 | DE19618219B4 Vorrichtung zur elektronischen Überwachung eines Verstellantriebs Device for electronically monitoring an adjusting drive |
| 04/29/2004 | DE10020981B4 Motor-Steuergerät mit Fehlerschutzschaltung Motor controller with fault protection circuit |
| 04/28/2004 | EP1414147A1 Measuring process for the power output by a motor |
| 04/28/2004 | EP1414129A2 Bypass apparatus and method for series connected energy storage devices |
| 04/28/2004 | CN2613928Y Fully automatic power saving controller for oil pump |
| 04/28/2004 | CN2613917Y Protector for fuel battery |
| 04/28/2004 | CN2613916Y Intelligent protector for accumulator |
| 04/28/2004 | CN1147998C Power supply control equipment and method |
| 04/27/2004 | US6727821 Apparatus and method for predicting an overload trip for an electrical power transformer |
| 04/27/2004 | US6727555 Device for protecting electronic components |
| 04/22/2004 | WO2004034542A1 Secondary battery with protective circuit |
| 04/22/2004 | WO2004034541A1 Over-voltage protection arrangement for a low voltage power supply |
| 04/22/2004 | WO2004033909A1 Overload protective apparatus of a compressor and a method thereof |
| 04/22/2004 | US20040078710 Method for fault identification in an electrical radial network, an application of the method and an arrangement for fault identification in an electrical radial network |
| 04/22/2004 | US20040078463 Method and apparatus for minimally invasive network monitoring |
| 04/22/2004 | US20040075471 Apparatus and method for detecting phase state |
| 04/22/2004 | DE10296460T5 Motoraktuator mit Momentregelung Motor actuator with torque control |
| 04/22/2004 | DE10291613T5 Verfahren und System zum Schutz der in einem Fahrzeug eingebauten Elektronik Method and system for protection of the electronics installed in a vehicle |
| 04/22/2004 | DE10245259A1 Überlastsicherung für Elektromotoren und Verfahren zur Überlastsicherung für Elektromotoren Overload protection for electric motors and method for overload protection for electric motors |
| 04/22/2004 | DE10245242A1 Verfahren zur Überstromerkennung eines elektrischen Antriebes A method for overcurrent detection of an electric drive |
| 04/21/2004 | EP1411624A1 Power inverter |
| 04/21/2004 | EP1411612A2 Apparatus and method for detecting phase state |
| 04/21/2004 | EP1410407A2 Surge voltage protector for use in power transmission networks |
| 04/21/2004 | EP1144224B1 Electrical system with battery and security disconnection |
| 04/21/2004 | CN2613083Y Integrated protector for electric motor |
| 04/21/2004 | CN1491471A Overload current protection device using magnetic impedance element |
| 04/21/2004 | CN1491470A Overload current protection device using magnetic impedance element |
| 04/21/2004 | CN1491469A Appliance for protecting boat generator and for synchronisation |
| 04/21/2004 | CN1490572A Apparatus and method for detecting phase state |
| 04/20/2004 | US6724643 Control system and method employing active temperature balance for controlling rectifier bridge |
| 04/20/2004 | US6724600 Combination current sensor and relay |
| 04/20/2004 | US6724599 Power semiconductor device |
| 04/15/2004 | WO2004032301A1 Fibre-optical sensor for open electric arc |
| 04/15/2004 | US20040070909 Digital protection relay with time sync function |
| 04/15/2004 | US20040070904 Over-voltage protection arrangement for a low voltage power supply |
| 04/15/2004 | US20040070892 Thermally suppressing circuit for restarting a locked motor |
| 04/14/2004 | EP1408594A2 DC ground fault detector and system-interconnected generation device using the DC ground fault detector |
| 04/14/2004 | EP1407537A1 Microprocessor for controlling the speed and frequency of a motor shaft in a power tool |
| 04/14/2004 | EP0897609B1 Method and device for braking an all-mains motor |
| 04/14/2004 | CN2612147Y 车载微型逆变器 Car micro-inverter |
| 04/14/2004 | CN2612135Y Differential pressure regulation protector of capacitor bank |
| 04/14/2004 | CN2612134Y Differential pressure isolation protector of capacitor bank |
| 04/14/2004 | CN2612133Y Segmental protector of capacitor bank |
| 04/14/2004 | CN2612132Y Overvoltage protector for load circuit of injection moulding machine |
| 04/14/2004 | CN2612131Y Fault prewarning protector of equipment |
| 04/14/2004 | CN1489819A Protection system for power networks |
| 04/14/2004 | CN1489818A Ground-fault protection coordinating system and ground-fault circuit interrupter with ground-fault protection coordinating unit |
| 04/14/2004 | CN1489277A One-way energy transmission frequency transformer for beam pumping unit |
| 04/14/2004 | CN1489253A Direction comparing distance relay apparatus |
| 04/14/2004 | CN1489252A Intelligent lithium ion battery protection circtuit |
| 04/14/2004 | CN1146067C Battery pack having under-voltage and over-voltage protection |
| 04/14/2004 | CN1145865C Water pump automatic control and motor multifunctional protection circuit |
| 04/13/2004 | US6721893 System for suspending operation of a switching regulator circuit in a power supply if the temperature of the switching regulator is too high |
| 04/13/2004 | US6721670 Crossover fault classification for power lines with parallel circuits |
| 04/13/2004 | US6721159 Power feeding apparatus, transporter and transport system |
| 04/13/2004 | US6721154 Apparatus and method for representing protection device trip response |
| 04/13/2004 | US6720749 Three-phase motor protector apparatus |
| 04/13/2004 | US6720747 Moveable barrier operator |
| 04/13/2004 | CA2277640C Dc-to-ac converter with over-current protection |
| 04/08/2004 | WO2004030174A1 Arrangement for controlling and monitoring a switching installation |
| 04/08/2004 | WO2004030173A1 Method for identifying an overload current of an electric drive |
| 04/08/2004 | WO2004028862A1 Fuse for the electric system of a motor vehicle |
| 04/08/2004 | WO2004010557A3 Intermediate circuit capacitor short-circuit monitoring |
| 04/08/2004 | WO2003073454A3 Circuit breaker lockout |
| 04/08/2004 | US20040068343 Load-adaptive control system, in particular for transport devices and used in aircraft |
| 04/08/2004 | US20040066590 Thermally suppressing circuit for restarting a locked motor with a restart-discharging drive member |
| 04/08/2004 | US20040066201 Arrangements to detect and respond to disturbances in electrical power systems |
| 04/08/2004 | DE19635158B4 Verfahren zum Betreiben einer elektronischen Auslöseeinheit für Schaltkreisunterbrecher A method for operating an electronic tripping unit for circuit breaker |
| 04/08/2004 | DE10244845A1 Anordnung zum Steuern und Überwachen einer Schaltanlage Arrangement for controlling and monitoring a switchgear |
| 04/07/2004 | EP1406312A2 An optically coupled device |
| 04/07/2004 | EP1405383A1 Method and device for protecting a conductor when an electric arc is produced |
| 04/07/2004 | CN2610545Y Split electrical equipment protector |
| 04/07/2004 | CN2610544Y Universal energy-saving electronic open-phase protector |
| 04/07/2004 | CN2610543Y Beam-pumping unit crank monitor |
| 04/07/2004 | CN2610542Y Special protection controller for variable frequency constant-pressure water supply control device |