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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01/30/1996 | US5488532 System of protection for electric power distribution failures |
01/30/1996 | US5488276 Apparatus for driving and controlling motor |
01/30/1996 | US5488275 Control circuit for feedback, motor-operated valve |
01/24/1996 | CN2218421Y Full function overcurrent protector for motor |
01/24/1996 | CN2218409Y Open-phase overload protector for three phase motor |
01/24/1996 | CN1115518A Inverter control method and apparatus |
01/17/1996 | EP0692925A2 Overvoltage protection circuit |
01/17/1996 | EP0692864A1 Drive circuit for a bidirectional flow control valve |
01/17/1996 | EP0692856A2 Power window or panel controller |
01/17/1996 | CN2217855Y Passive contactless electric-motor protector |
01/17/1996 | CN1115135A Controlling device and abnormal detecting method of commutatorless electric motor and air conditioner |
01/16/1996 | US5485394 Fault location method for a parallel two-circuit transmission line with n terminals |
01/16/1996 | US5485343 Digital circuit interrupter with battery back-up facility |
01/16/1996 | US5485342 Abnormal current cutoff circuit |
01/11/1996 | WO1996000831A1 Yieldable gearing and safety mechanisms for garage door operators |
01/10/1996 | EP0691724A1 Device for operating a movable part of a motor vehicle |
01/10/1996 | EP0691723A2 Method for automatic closure of openings and devices for carrying out this method |
01/10/1996 | EP0691722A1 Superconducting apparatus and method for operating said superconducting apparatus |
01/10/1996 | CN2217276Y Protection arrangement against phase interruption for three phase electric motor |
01/10/1996 | CN2217275Y Super miniature protection switch against phase interruption |
01/09/1996 | US5483192 Gate power supply circuit |
01/09/1996 | US5483167 Computer controlled ground detecting method for inverter unit and apparatus therefor |
01/09/1996 | US5483141 Method and apparatus for controlling refrigerator cycle |
01/09/1996 | US5483139 Motor start, reverse and protection system without a starting capacitor |
01/09/1996 | US5483135 Adaptive system and method for controlling vehicle window operation |
01/09/1996 | US5483133 Control system for opening or closing an opening-closing member |
01/04/1996 | WO1996000463A1 Fault detector for voltage source self-commutated power converter |
01/04/1996 | WO1996000458A1 Device for limiting the short-circuit current in a power-distribution network |
01/04/1996 | DE4423766A1 Discriminating between short-circuit current and cold starting current when operating LV lamp |
01/04/1996 | DE4422265A1 Vorrichtung zur Begrenzung eines Kurzschlußstromes in einem Netz A device for limiting a short-circuit current in a power |
01/03/1996 | EP0645029A4 Automatic venting system for a vehicle. |
01/02/1996 | US5480736 Fuel cell generation apparatus and a method for starting the same |
12/27/1995 | EP0688933A1 Safety device for an automatic window opening and closing mechanism |
12/27/1995 | CN2216303Y Overload protection constant value type protector with open-phase function for motor |
12/27/1995 | CN2216302Y Integral low-voltage three-phase synchronous electric generator protector |
12/27/1995 | CN2216301Y Undervoltage and leakage protector |
12/26/1995 | US5479119 High speed active overvoltage detection and protection for overvoltage sensitive circuits |
12/21/1995 | WO1995034827A1 Electric vehicle propulsion system power bridge with built-in test |
12/21/1995 | DE4433406C1 Remotely operated protection device |
12/21/1995 | CA2192462A1 Electric vehicle propulsion system power bridge with built-in test |
12/20/1995 | EP0688078A2 Busbar protection method and device |
12/20/1995 | EP0688077A2 Power delivery circuit with current sensing |
12/20/1995 | EP0688076A1 Power supply with power factor correction and protection against failures of the power factor correction |
12/20/1995 | CN2215778Y Multi-function motor protector |
12/19/1995 | US5477124 Circuit to prevent excessive rechargeable battery discharge |
12/19/1995 | US5477115 Apparatus and method for controlling start-up of electrically-powered machines |
12/14/1995 | DE4420513A1 Protecting bus=bars using constant k with value greater than k equal to 2 outputs |
12/14/1995 | DE4419813A1 Vorrichtung zum Betreiben eines Elektromotors An apparatus for operating an electric motor |
12/14/1995 | DE4416048C1 Stromdifferentialschutzanordnung für einen Transformator Current differential protection arrangement for a transformer |
12/13/1995 | EP0686803A2 Closing device for automatic closing of openings |
12/13/1995 | EP0686802A2 Closing device with a safety circuit |
12/13/1995 | CN2215155Y Motor stator, rotor friction detector and self-controlling device thereof |
12/13/1995 | CN2215154Y Safety motor starter |
12/12/1995 | US5475559 Negative-sequence time-overcurrent relay |
12/12/1995 | US5475290 Device for protecting washing machine motor including brushless motor against overcurrent |
12/12/1995 | CA2048370C Power converting apparatus |
12/07/1995 | WO1995033302A1 Method and apparatus for controlling an electric motor for moving a member |
12/05/1995 | US5473500 Electrostatic discharge circuit for high speed, high voltage circuitry |
12/05/1995 | US5473497 Electronic motor load sensing device |
12/05/1995 | US5473494 Electrical power supply system |
11/30/1995 | DE19517958A1 Electric motor drive system for car window or sliding roof |
11/29/1995 | EP0684678A1 Methods and apparatus for identifying faulted phases on an electric power transmission line |
11/29/1995 | CN2214046Y Motor protection device for water pump |
11/29/1995 | CN1112696A Pulse width modulated power supply |
11/29/1995 | CN1112682A Exciting ground detector and ground relay in which grounding is detected by DC |
11/28/1995 | US5471123 Control circuit for feedback, motor-operated valve |
11/28/1995 | CA2041696C Switched mode power supply having a discharge circuit for an auxiliary power source |
11/23/1995 | WO1995031846A1 Circuitry for detecting earth leakages in energy transmission cables |
11/23/1995 | DE4417883A1 Thermal and overload protection for small electromotors |
11/23/1995 | DE4416966A1 Schaltungsanordnung zur Ermittlung eines Erdschlusses in einem Energieübertragungskabel Circuitry for detecting a ground fault in a power transmission cable |
11/22/1995 | CN2213395Y Protector for electric motor |
11/22/1995 | CN1112309A DC motor with rotating sensor |
11/21/1995 | US5469351 Fault isolation in an induction motor control system |
11/21/1995 | US5469148 Frequency monitoring device |
11/20/1995 | CA2123927A1 Storage battery with self contained shock activated automatic breaker, safety device for motor vehicles |
11/15/1995 | EP0682395A2 Device for limiting the rate of change of currents and voltages between conductors or to earth and use thereof |
11/15/1995 | EP0681738A1 Thermal protection for electrical machines |
11/15/1995 | CN2212848Y Electromagnetic-type electric machine protector |
11/14/1995 | US5467248 Relay control circuit |
11/14/1995 | US5467241 Power receiving system |
11/09/1995 | WO1995030265A1 Process for regulating an automatic door operated by a drive motor |
11/09/1995 | WO1995030264A1 Differential current protection for a transformer |
11/09/1995 | DE19504032A1 Motor-driven automatic door control method |
11/08/1995 | EP0681310A1 Load driving circuit |
11/08/1995 | CN2212283Y Automatic or hand-operated multifunction protectice voltage reducing starter |
11/08/1995 | CN2212278Y Drop type multifunction motor protector |
11/08/1995 | CN2212277Y powerless motor protector with display function |
11/08/1995 | CN1111409A Power-saving computerized protector for three-phase asynchronous electric machine |
11/07/1995 | US5465202 Inverter apparatus provided with electric discharge control circuit of dc smoothing capacitor and method of controlling the same |
11/07/1995 | US5465201 Overload protection of switch mode converters |
11/07/1995 | US5465190 Circuit and method for protecting power components against forward overvoltages |
11/07/1995 | US5465188 Circuit protection device |
11/07/1995 | US5463874 Inductively activated control and protection circuit for refrigeration systems |
11/02/1995 | EP0680129A1 Controlling start-up of electrically-powered equipment such as a compressor |
11/02/1995 | DE4414933A1 Signalling sticking relay contacts in DC motor controller |
11/01/1995 | CN2211665Y D.C. motor protector for wire erection vehicle |
10/31/1995 | US5463293 Motor control device |
10/26/1995 | CA2146490A1 Methods and apparatus for identifying faulted phases on an electric power transmission line |
10/25/1995 | EP0678643A1 Vehicle window actuator with antisqueeze function and a reduced number of connection wires |
10/25/1995 | CN2211131Y Multi-function motor automatic-protection switch |