| 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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| 10/07/1997 | US5675231 Systems and methods for protecting a single phase motor from circulating currents |
| 10/04/1997 | CA2201770A1 Protection system for a three-phase distribution transformer immersed inan insulating fluid |
| 10/02/1997 | DE19612596A1 Anschlags- und Blockiererkennung bei einem Elektromotor Stop and jamming detection in an electric motor |
| 10/01/1997 | CN2263838Y 智能化电机保护器 Intelligent motor protection |
| 10/01/1997 | CN1036036C Inverter protection device |
| 09/30/1997 | US5673186 Apparatus for protecting multiple output rectifiers in a current-fed DC-to DC converter |
| 09/30/1997 | US5672945 Motor controlled surgical system and method having self clearing motor control |
| 09/30/1997 | US5672917 Semiconductor power switch system |
| 09/24/1997 | EP0713580B1 Process and device for monitoring the temperature of an electric generator |
| 09/24/1997 | CN2263414Y Comprehensive protecting voltage reducing starter |
| 09/23/1997 | US5671112 Digital integrator V/Hz relay for generator and transformer over-excitation protection |
| 09/23/1997 | US5670858 Electronic control apparatus |
| 09/18/1997 | DE19610106A1 Remote control of vehicle heating and ventilation electric fan motor |
| 09/17/1997 | EP0795944A2 Method for determining the operating parameters of at least one distance relay |
| 09/17/1997 | EP0795183A1 Method and device for preventing explosions and fires in electrical transformers |
| 09/17/1997 | EP0658275B1 Improvements in and relating to electromechanical relays |
| 09/17/1997 | CN2262772Y Voltage stabilization charger with three-colour LED indicator |
| 09/17/1997 | CN1159675A Inverse transformer, leakage-proof device and method for preventing leakage of driven load of inverse transformer |
| 09/17/1997 | CN1035911C Spot-network distribution system and operation method thereof |
| 09/16/1997 | US5668515 Superconductive magnet apparatus |
| 09/16/1997 | US5668451 Method for monitoring the opening and closing process in a system having at least one component moved by electric motor |
| 09/10/1997 | EP0681738A4 Thermal protection for electrical machines. |
| 09/09/1997 | US5666066 Overcurrent detecting device for a DC motor |
| 09/09/1997 | US5666060 Test method and apparatus for testing a protective relay system |
| 09/03/1997 | CN2261681Y Phase-off protector for A.C. motor with optically coupling air separate switch |
| 09/03/1997 | CN2261363Y Electronic and electromagnetic dimming switch with overload protection |
| 09/02/1997 | US5663620 Apparatus for controlling driving of power window system |
| 08/28/1997 | DE19621526C1 Welding unit with welding material control |
| 08/27/1997 | EP0792096A1 Electronic relais for a multifunctional protection |
| 08/27/1997 | EP0792008A2 Method and apparatus for protecting switching element of inverter from being overheated |
| 08/27/1997 | EP0579727B1 Garage door operator safety apparatus |
| 08/27/1997 | CN2261113Y Voltage regulator for ac. generator of automobile |
| 08/27/1997 | CN2261112Y Energy-saving controller for electric motor |
| 08/27/1997 | CN2261110Y Commutation control and time-sharing overload protection device for dc. servo electric-motor |
| 08/26/1997 | US5661384 Motor control system and method |
| 08/20/1997 | EP0790699A2 DC motor control method and apparatus for operating the method |
| 08/20/1997 | EP0789947A1 Protection switch for a battery powered device |
| 08/20/1997 | CN2260397Y All direction automatic protector for refrigerator |
| 08/20/1997 | CN2260396Y AC load protector |
| 08/20/1997 | CN1035710C Device for driving brushless DC motor and method of idntification of falt thereof |
| 08/19/1997 | US5659452 Method of drive protection for a switched reluctance electric motor |
| 08/13/1997 | EP0788853A2 Low-voltage electromagnetic riveter |
| 08/12/1997 | US5657194 Circuit and method for automatically resetting a solid state relay |
| 08/12/1997 | US5657193 Electronic control module for motor controller units |
| 08/12/1997 | US5656922 Vehicle based AC power system |
| 08/08/1997 | CA2169029A1 Loudspeaker overload protection |
| 08/07/1997 | WO1997028454A1 Method of detecting a fault in a monitored section of an electric transmission line using distance protection techniques |
| 08/07/1997 | DE19605022A1 Verfahren zum Erfassen eines Fehlers auf einem zu überwachenden Leitungsabschnitt einer elektrischen Übertragungsleitung nach dem Distanzschutzprinzip A method for detecting a fault on a line to be monitored portion of an electrical transmission line according to the distance protection principle |
| 08/06/1997 | EP0788210A1 Electronic relay |
| 08/06/1997 | EP0721695B1 Electric motor with torque detecting means |
| 08/06/1997 | CN2259025Y Start protector for motor |
| 08/06/1997 | CN1156347A Power generating equipment for vehicle |
| 07/30/1997 | EP0786848A1 Electronic monitoring of the driving force of a drive |
| 07/29/1997 | US5652525 System and method for detecting D.C. motor circuit failures |
| 07/24/1997 | WO1997026694A1 Method of controlling a direct current drive |
| 07/24/1997 | DE19615123C1 Electronic monitoring of actuator drive in vehicle e.g. for sliding sun-roof |
| 07/23/1997 | EP0785610A2 Monitoring apparatus with self-diagnosis |
| 07/23/1997 | EP0746896A4 Hybrid alternator with voltage regulator |
| 07/23/1997 | CN2258326Y Phase interruption and overload protection for three-phase motor |
| 07/22/1997 | US5650903 Superconducting-magnet electrical circuit having voltage and quench protection |
| 07/22/1997 | US5650698 Power window apparatus with a safety device for a motor vehicle |
| 07/22/1997 | US5650240 Multicell battery system with individually controllable cell bypasses |
| 07/17/1997 | WO1997025762A1 Movement control for screens or panels |
| 07/17/1997 | DE19601359A1 Verfahren zum Steuern eines Gleichstromantriebs A method for controlling a direct-current drive |
| 07/16/1997 | EP0783788A1 Current differential protection arrangement |
| 07/16/1997 | EP0700590B1 Control of electric loads during generator failure in a multi-generator system |
| 07/16/1997 | CN2257969Y Phase-loss protective contactor |
| 07/16/1997 | CN1154742A Electric vehicle propulsion system power bridge with built-in test |
| 07/16/1997 | CN1154588A Optical fiber, over-temp. and multi-function protector for electric motor windings |
| 07/16/1997 | CN1154587A Capacitor type gas relay |
| 07/16/1997 | CN1154585A Anti-snag latch assembly for connector |
| 07/15/1997 | US5648887 Electric current limiting device for winch responsive to multiple device states |
| 07/09/1997 | EP0782788A1 Method and device for monitoring at least two redundant control channels for an electric-generator exciter |
| 07/09/1997 | EP0782779A1 Transient voltage protection circuit for electrical power converters |
| 07/09/1997 | CN1154008A Contactor with phase failure protection function |
| 07/09/1997 | CN1154007A Triphase AC motor protector |
| 07/09/1997 | CN1153890A Ice removal motor control circuit and method for automatic ice maker |
| 07/02/1997 | EP0782265A1 Method and device for protecting an adjustable impedance element controlling the supply of an electric motor, particularly of a motor vehicle |
| 07/02/1997 | EP0782237A2 Power window with detecting function of sticking of foreign matter |
| 07/02/1997 | CN2257418Y Electricity-saving protector for refrigerator |
| 07/02/1997 | CN1153414A Constant value protection method and apparatus for high voltage transmission lines |
| 07/02/1997 | CN1153413A Protection element and method for protecting circuit |
| 07/01/1997 | US5644458 Induction machine protection device |
| 07/01/1997 | US5644233 Quench protection for actively shielded magnets |
| 07/01/1997 | US5644218 Protection device for a superconducting coil of a superconducting voltage stabilizer |
| 06/26/1997 | DE19548270A1 PWM control of power output of DC motor e.g. for automobile |
| 06/25/1997 | EP0780962A2 Electronically commuted motor |
| 06/25/1997 | EP0780960A1 Electric leakage preventive apparatus and method |
| 06/25/1997 | EP0780951A2 Method and apparatus for remote testing of coordination of overcurrent protection devices in an electrical power system |
| 06/25/1997 | EP0780950A2 Method for protecting a switching regulator, device and application |
| 06/25/1997 | EP0780032A1 Circuit for operating an electric motor |
| 06/25/1997 | EP0780031A1 Circuit for operating an electric motor |
| 06/25/1997 | CN1035295C Electric power trasmission system |
| 06/24/1997 | US5642250 Protection release method |
| 06/24/1997 | US5642248 Electrical extension cord with built-in safety protection |
| 06/24/1997 | US5642247 Automatic fault monitoring system and motor control system incorporating same |
| 06/19/1997 | DE19650907A1 Electronically commutated motor |
| 06/18/1997 | CN1152205A Power converter protective appartus |
| 06/18/1997 | CN1152204A Lock detector for induction motor |
| 06/17/1997 | US5640103 Radial basis function neural network autoassociator and method for induction motor monitoring |