| 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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| 06/16/1998 | US5767780 Detector for flow abnormalities in gaseous diffusion plant compressors |
| 06/16/1998 | US5767647 Non-volatile memory controlling apparatus and applications of the same to electronic computer peripheral equipment |
| 06/16/1998 | US5767631 Power supply and electronic ballast with low-cost inverter bootstrap power source |
| 06/16/1998 | US5765664 Elevator drive fault detector |
| 06/10/1998 | EP0847122A2 Two time constant thermal protection in electrical switching apparatus |
| 06/10/1998 | CN1184371A DC/DC converter with protection circuit |
| 06/10/1998 | CN1184355A Improved surge protecting circuit for electronic products |
| 06/09/1998 | US5764466 Circuit for short circuit detection through resistive shunt in power circuits using unipolar control voltage |
| 06/09/1998 | US5764462 Field ground fault detector and field ground fault relay for detecting ground corresponding to DC component extracted ground fault current |
| 06/09/1998 | US5764461 Protection circuit for a switch mode power supply |
| 06/09/1998 | US5764063 Monitor for battery pack |
| 06/09/1998 | US5764033 Rechargeable battery protection circuit |
| 06/09/1998 | US5764023 Motor controller with circuit interrupter and method for interrupting power to a motor controller |
| 06/09/1998 | US5764008 Drive device for closing parts in motor vehicles |
| 06/09/1998 | US5762384 Vehicle door lock with a centrally-operated locking unit |
| 06/03/1998 | EP0845853A2 DC/DC converter with a protection circuit |
| 06/03/1998 | EP0845681A2 Electric motor monitoring arrangement |
| 06/03/1998 | EP0764293B1 Control system for a direct current motor with monitoring circuit and shut-off transistor in series with relay windings |
| 06/02/1998 | US5761018 Motor starter for an electrical circuit |
| 06/02/1998 | US5760566 Control device for stopping the operation of a single-phase asynchronous motor with a capacitor |
| 06/02/1998 | US5760556 Motor controller and protector unit |
| 05/28/1998 | WO1998022828A1 Device and method for analysing faults on networks |
| 05/28/1998 | WO1998011641A3 Digital current differential system |
| 05/27/1998 | EP0844720A2 Method and device for current monitoring of semiconductor circuits |
| 05/27/1998 | EP0843910A1 Device for electronically controlling a motor vehicle displacement mechanism |
| 05/27/1998 | CN2282742Y Emergency protector for three-phase motor |
| 05/26/1998 | US5757651 Process for obtaining triggering signals by the comparison of currents at the ends of a power transmission path |
| 05/26/1998 | US5757624 DC-DC converter unit |
| 05/26/1998 | US5757596 Motor control assembly and method of controlling same |
| 05/26/1998 | US5757214 PWM driver for an inductive load with detector of a not regulating PWM condition |
| 05/26/1998 | US5757161 Apparatus and method for limiting the speed of an electric motor |
| 05/22/1998 | WO1998021887A1 Quick-reset circuit for auxiliary power supply |
| 05/22/1998 | WO1998021814A1 Fault control circuit for switched power supply |
| 05/20/1998 | EP0716781B1 Device for operating a power consumer in a vehicle |
| 05/20/1998 | EP0653834B1 Power window driving controller |
| 05/20/1998 | DE19750649A1 Battery charger e.g. for electrical tools |
| 05/20/1998 | DE19645916A1 Procedure for selective opening of circuit breakers in low voltage plant |
| 05/20/1998 | DE19645783A1 Stromversorgungsschaltung Power supply circuit |
| 05/20/1998 | CN1182298A Electric power distribution system with automatic protection breakers and related method |
| 05/20/1998 | CN1182297A Relay protection method and device to recognize symmetry of transformer exciting surge |
| 05/19/1998 | US5754384 Overcurrent protection circuitry for non-isolated battery discharge controller |
| 05/19/1998 | US5754045 Power line switching apparatus |
| 05/19/1998 | US5754032 Alternator control system |
| 05/19/1998 | US5754017 Power window with detecting function of sticking of foreign matter |
| 05/19/1998 | US5753989 Hybrid alternator |
| 05/14/1998 | WO1998020611A1 Electric power supply circuit |
| 05/14/1998 | WO1998020592A1 Auto up window with obstacle detection system |
| 05/14/1998 | WO1998020567A1 Circuit protection device |
| 05/14/1998 | DE19742423A1 Microcomputer for controlling electric motor |
| 05/14/1998 | DE19646497A1 Rotation direction recognition for synchronous machine |
| 05/13/1998 | CN2281615Y Anti-short-circuit generator with stable voltage output and fault indicator |
| 05/13/1998 | CN2281601Y Multifunctional automatic motor burnout protector |
| 05/13/1998 | CN1181650A Intelligent three-phase protective solid relay |
| 05/13/1998 | CN1038375C Control and protection system for AC-DC conversion system |
| 05/12/1998 | US5751530 High power DC blocking device for AC and fault current grounding |
| 05/12/1998 | US5751524 Ground fault protection circuit for a multiple source system |
| 05/06/1998 | CN2280996Y 电机保护器 Motor protection |
| 05/05/1998 | US5748463 Generating apparatus for vehicle |
| 05/05/1998 | US5748459 Electric leakage current prevention using an equivalent impedance |
| 05/05/1998 | US5748423 System for limiting short circuit current in 3-phase electric power networks |
| 05/05/1998 | US5747955 Current sensing module for a variable speed AC motor drive for use with a treadmill |
| 05/05/1998 | US5747909 Hybrid alternator |
| 05/05/1998 | US5747884 Arrangement for operating an adjustment drive |
| 05/05/1998 | US5746062 Methods and apparatuses for detecting surge in centrifugal compressors |
| 05/05/1998 | CA2073385C Monitoring diagnosis device for electrical appliance |
| 04/30/1998 | DE19641618A1 Accident prevention device for hand-controlled machine tools |
| 04/29/1998 | EP0838887A2 Electric power distribution system with automatic protection breakers and related method |
| 04/29/1998 | EP0838244A1 Improvements in the control circuits of an apparatus for physical exercises |
| 04/29/1998 | EP0782788B1 Method and device for monitoring at least two redundant control channels for an electric-generator exciter |
| 04/29/1998 | CN2280382Y Multi-protection, energy saving starter for ac motor |
| 04/29/1998 | CN2280379Y Whole locking protective arrangement for error phase or interrupted phase |
| 04/28/1998 | US5744927 Inverter control method and apparatus |
| 04/22/1998 | EP0837536A2 Drive assembly for axially reciprocating masses |
| 04/22/1998 | EP0836966A2 Electric energy supplying device |
| 04/22/1998 | EP0740859A4 Electrostatic discharge circuit for high speed, high voltage circuitry |
| 04/22/1998 | CN2279729Y Double-side linked chattering for DC pulling power supply system |
| 04/22/1998 | CN2279728Y Open-phase overloading protector for three-phase motor |
| 04/22/1998 | CN2279727Y Protective switch for submersible pump |
| 04/22/1998 | CN2279726Y Time-delay thermal protector for electric machine |
| 04/22/1998 | CN2279725Y Emergency protector for current transformer |
| 04/22/1998 | CN1038178C Polling for detection of power supply or other failures of digital circuit |
| 04/21/1998 | US5742150 Power supply and method of protecting batteries therein |
| 04/21/1998 | US5742148 Charge/discharge control circuit and chargeable electric power source apparatus |
| 04/15/1998 | CN2279027Y Automatic power supply lighting shock and leakage protector |
| 04/15/1998 | CN2279026Y Double sampling motor integral protector |
| 04/15/1998 | CN2279025Y Electronic thermo-relay |
| 04/14/1998 | US5739997 Superconducting-magnet electrical circuit offering quench protection |
| 04/14/1998 | US5739649 Fail check device and method for AC motor control circuit |
| 04/09/1998 | DE19640821A1 Earth fault identification process for power distribution network |
| 04/08/1998 | EP0834210A1 Device and process for electronic monitoring of an adjusting drive in a vehicle |
| 04/08/1998 | CN2278304Y Electronic voltage regulator with short circuit protection function for car generator |
| 04/08/1998 | CN2278297Y Improved double-magnet starter |
| 04/08/1998 | CN2278296Y Overcurrent and overheat protector for rareearth permanent magnet industrial-frequency three-phase ac generator |
| 04/07/1998 | US5737200 Semiconductor device protection method |
| 04/07/1998 | US5737199 Fail Check Device and method for switching signal lines |
| 04/07/1998 | US5737166 Protective equipment in a bipolar HVDC station |
| 04/07/1998 | US5737163 DC-AC converter protection |
| 04/07/1998 | US5735958 Electrostatic coating system |
| 04/07/1998 | US5735130 Ice removal motor control circuit and method for an automatic ice maker |
| 04/02/1998 | WO1998013923A1 Battery protective circuit |