| 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) |
|---|
| 04/01/1992 | EP0477371A1 Digital differential relay system |
| 03/31/1992 | US5101314 Protection system for capacitor bank |
| 03/26/1992 | DE4029883A1 Rotation direction locking system for battery operated tool - has rotation direction changeover switch and unit for locking changeover switch during operation of permanent excited DC motors |
| 03/25/1992 | CN2100051U Multifunctional trackable protector for electric machine |
| 03/25/1992 | CN1059809A Power supply changing device for electronic products |
| 03/24/1992 | US5099409 Semiconductor electric power conversion system enabling fault and/or overtemperature protection |
| 03/24/1992 | US5099188 Protection device for high-temperature batteries |
| 03/24/1992 | CA1297953C Protective triggering of thyristors of a pulse generator |
| 03/19/1992 | WO1992004756A1 Current relay circuit |
| 03/18/1992 | CN2099404U Language-intellect type synthetical protective-device for motor |
| 03/18/1992 | CN2099332U Self-control protector for motor of bittern recovering machine |
| 03/18/1992 | CN1059623A Method of and device for protecting electrical power system |
| 03/17/1992 | CA1297527C Motor controller |
| 03/11/1992 | EP0474186A2 Method of and device for protecting electrical power system |
| 03/11/1992 | EP0473831A1 Power supply with n separate current-limited outputs |
| 03/11/1992 | EP0407525A4 Safety device to prevent excessive battery drain |
| 03/11/1992 | CN2098750U Phase loss protector for 3-phase motor |
| 03/11/1992 | CN2098749U Integred controlling and protecting device for safety of motor |
| 03/11/1992 | CN2098730U Double-contact centrifugal switch and protector for motor |
| 03/10/1992 | US5095261 Transient protection circuit for a dc voltage supply |
| 03/05/1992 | WO1992003646A1 Process and device for driving an electromagnetic consumer |
| 03/05/1992 | DE4027919A1 Energy supply network line section disconnection system - uses comparison of current phase signals to control disconnection switch |
| 03/05/1992 | DE4027918A1 Energy supply network line section disconnection system - compares signals provided by control devices for successive line sections |
| 03/05/1992 | DE4027917A1 Energy supply network line section disconnection system - performs information exchange between successive control devices for respective line sections |
| 03/04/1992 | EP0473192A2 A circuit for reducing resonance voltage |
| 03/04/1992 | EP0472805A2 Arrangement to limit the terminal voltage in an alternator |
| 03/04/1992 | EP0472647A1 Voltage stress alterable esd protection structure |
| 03/04/1992 | CN2098109U Loss of phase protector for three-phase motor |
| 03/04/1992 | CN2098108U Loss of phase and overcurrent protector for three-phase motor |
| 03/04/1992 | CN1015767B Dc-to-ac converter circuit with serial silicon controlled rectifiers |
| 03/03/1992 | CA1296762C Electromagnetic contactor tandem control system for thermal protection of a bidirectional motor drive |
| 02/26/1992 | EP0472405A2 Telecommunication equipment protector |
| 02/26/1992 | CN2097462U Switch for protection of electric machine |
| 02/26/1992 | CN2097461U Differential protector for low-voltage electric machine |
| 02/26/1992 | CN1059051A Protective circuit and protective plug fir telecommunication installations |
| 02/25/1992 | US5091686 Operation control circuit for pump motor |
| 02/20/1992 | DE4029794A1 Verfahren und einrichtung zur ansteuerung eines elektromagnetischen verbrauchers Method and device for activation of an electromagnetic consumer's |
| 02/19/1992 | EP0471167A1 Protective circuit and protective module for telecommunication devices |
| 02/19/1992 | EP0205596B1 Pump control apparatus and method |
| 02/19/1992 | CN2096834U Power without back change, consuming and break |
| 02/19/1992 | CN2096831U Three-phase electric machinery protector |
| 02/19/1992 | CN2096830U Distribution case proventing burning electrical machinery |
| 02/12/1992 | EP0470525A2 Power converter with shoot-through protection |
| 02/12/1992 | CN2096159U Scr dc transformer |
| 02/12/1992 | CN2096147U Phase-losing protector for three phase asynchronous motor |
| 02/12/1992 | CN2096146U Electronic analog thermal relay |
| 02/12/1992 | CN2096145U Multifunctional protector for tv set |
| 02/12/1992 | CN2096144U Power saving motor protector |
| 02/12/1992 | CN2096128U Complex two-way low voltage ac contactor |
| 02/12/1992 | CN2095544U Automatic musical ice-cream stirring machine |
| 02/11/1992 | US5088018 Overvoltage protection power supply circuit |
| 02/11/1992 | US5087999 Capacitor bank provided with a protective device |
| 02/11/1992 | CA1295661C System for protection of dynamo-electric a.c. machines against damage from residual voltage effects |
| 02/05/1992 | EP0470043A2 Electrical circuit arrangement |
| 02/05/1992 | EP0469172A1 Quarter bridge circuit for high currents |
| 02/05/1992 | CN1058489A Selective high-voltage leakage protection using dynamic voltage comparison |
| 02/04/1992 | US5085450 Step stall prevention for vehicle steps |
| 01/31/1992 | CA2048062A1 Solid state overload relay |
| 01/29/1992 | EP0468806A2 Temperature control system for motors and power components of a material handling vehicle |
| 01/29/1992 | EP0468361A1 Limitation of closing force at the closing edge of a movable element |
| 01/29/1992 | EP0468299A2 Circuit arrangement with a transformer |
| 01/29/1992 | CN2094830U Motor energy-saving protector |
| 01/29/1992 | CN2094816U Motor starting protector |
| 01/28/1992 | CA1295009C Electric motor controllers |
| 01/22/1992 | CN2094151U Dc conversing power supply for lighting and controlling trolleys |
| 01/22/1992 | CN2094141U Open-phase protector for three-phase asynchronous motors |
| 01/22/1992 | CN2094140U Power-economizing phase-failure protector for electric motors |
| 01/21/1992 | US5083068 Method and device for enlarging a stoppage safety function for electric motors |
| 01/16/1992 | DE4021560A1 Electric power tool with tachogenerator - determining and regulating RPM with circuit determining armature voltage of motor proportional to RPM |
| 01/15/1992 | EP0466594A1 Device for monitoring a polyphase rectifier |
| 01/15/1992 | EP0466031A1 Dimmer circuit |
| 01/15/1992 | EP0465791A2 Control circuit with antilock device for a DC-motor without collector |
| 01/15/1992 | CN2093465U Energy-saving device for asynchronous motor |
| 01/15/1992 | CN2093454U High or low voltage phase failure protector |
| 01/15/1992 | CN2093453U Open phase protector for motor |
| 01/15/1992 | CN2093452U Universal open phase protector for three-phase a.c. motor |
| 01/15/1992 | CN2093451U Overload,noload protector for electric motor |
| 01/14/1992 | US5081404 Motor driver interface fault detection circuit with dual mode fault detection |
| 01/14/1992 | CA1294322C Silicon diode looping element for protecting a battery cell |
| 01/09/1992 | DE4020351A1 Electronically monitoring and controlling window winder - using additional body motion sensor to avoid false triggering of unit in motor vehicle |
| 01/08/1992 | EP0464516A2 Earth leakage-current protection system |
| 01/08/1992 | CN2092831U Converting overrunning dc-to-ac governor of generator |
| 01/08/1992 | CN2092826U Short circuit protector for broken phase and overload of asynchronous motor |
| 01/08/1992 | CN1057738A Differential protector for low voltage motor |
| 01/08/1992 | CN1057624A Controlling apparatus for elevator door |
| 01/07/1992 | US5079666 Power supply shutdown through loss of sync |
| 12/31/1991 | US5077651 Snubber circuit of power converter |
| 12/31/1991 | US5077628 Circuit breaker protection apparatus |
| 12/31/1991 | US5076763 Pump control responsive to timer, delay circuit and motor current |
| 12/31/1991 | US5076761 Safety drive circuit for pump motor |
| 12/26/1991 | WO1991020116A1 Low impedance power conditioner apparatus and method |
| 12/25/1991 | CN2091501U Explosion light electric drill transformer protecting device |
| 12/24/1991 | US5075813 Cell protection apparatus and method for a battery cell system |
| 12/21/1991 | CA2044975A1 Modular superconducting magnetic energy storage inductor |
| 12/18/1991 | CN2091042U Auxiliary electronic apparatus for controlling circuit of motor |
| 12/18/1991 | CN2091041U Light-load energy-saving y-delta auto-transformation starter |
| 12/17/1991 | US5073861 Method of and apparatus for preventing overheating of heating element |
| 12/17/1991 | US5073848 Power distribution system |
| 12/17/1991 | US5073751 Magnetic resonance imaging |
| 12/12/1991 | WO1991019342A1 Process for testing devices |