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