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)
12/1996
12/17/1996US5585705 Process for monitoring movement of closure devices which may be adjusted by motors
12/17/1996US5585702 For a motor vehicle
12/12/1996WO1996039740A1 Movable barrier operator having force and position learning capability
12/12/1996DE19618236A1 Spannungsversorgung für mobile elektrische Geräte Power supply for mobile electric devices
12/11/1996EP0748022A1 Device for the protection of electric motors against high temperatures and currents
12/11/1996EP0746899A1 Switching regulator having high current prevention features
12/11/1996EP0746896A1 Hybrid alternator with voltage regulator
12/11/1996EP0746891A1 Electrical safety device
12/11/1996EP0746684A1 Soft-start pump control system
12/11/1996CN2242534Y Light chopper with protection function
12/11/1996CN2242533Y Emergency protective circuit arrangement specially adapted for high voltage or low voltage generator
12/10/1996US5583420 Microprocessor controller for starter/generator
12/05/1996DE19534464C1 Device preventing dryout of electromagnetic oscillating-piston pump
12/04/1996EP0660973B1 Protection triggering process
12/04/1996EP0556379B1 Motor controller
12/04/1996CN2241938Y Automatic protecting electricity economizer for three phase electric motor
12/04/1996CN2241937Y Full-protector for electric motor
12/04/1996CN2241936Y Multi-function three-phase protector for electric machine
12/04/1996CN2241935Y Modular combined demagnetizer
12/04/1996CN2241933Y Phase-sequence controller
12/04/1996CN1137157A Phase-shifting transformer and protection system of phase-shifting transformer
12/03/1996US5581103 Semiconductor integrated circuit device with input-protecting circuit
11/1996
11/27/1996EP0744807A1 DC motor current limiting method and DC motor for implementing this method
11/27/1996EP0564577B1 Protection system for ac generators
11/27/1996CN2241408Y Three phase motor protector
11/27/1996CN2241407Y Under-voltage open-phase protector for motor
11/27/1996CN2241406Y Safety three phase asynchronous motor protector
11/27/1996CN2241405Y Motor integrated protector
11/27/1996CN1033415C Automatic flashover protection for locomotive traction motors
11/26/1996US5579195 Power stoppage minimizing systems for distribution lines and methods of using a distribution line
11/26/1996US5578912 On-car motor driving apparatus and self-diagnosing and selective driving mechanisms for the same
11/20/1996EP0743736A1 Process for monitoring the capacity of a rechargeable battery
11/20/1996EP0662220B1 Decoupling of a high-frequency error signal from a high-frequency electromagnetic field in a large electric machine
11/20/1996EP0571383B1 Battery protection system
11/20/1996CN2240806Y Silicon controlled explosion-proof switch
11/20/1996CN2240801Y Electric motor automatic protector
11/20/1996CN2240799Y Phase-loss protector
11/20/1996CN1136369A Rectifer bridge apparatus
11/20/1996CN1136170A Checking device for wrong wire distribution of power supply
11/19/1996US5576632 Neural network auto-associator and method for induction motor monitoring
11/19/1996US5576625 Test method and apparatus for testing a protective relay system
11/19/1996US5576580 DC power supply circuit
11/13/1996EP0742630A1 Method of controlling the movement of an opening panel
11/13/1996EP0741881A1 Integrated circuit
11/13/1996CN2240209Y Multi-functional motor protector with digital indicator
11/12/1996US5574611 Service interruption minimizing system for power distribution line
11/12/1996US5574608 Brushless motor lock detection apparatus
11/12/1996US5574387 Radial basis function neural network autoassociator and method for induction motor monitoring
11/12/1996US5574352 Frequency control method for inverter and apparatus therefor
11/12/1996US5574346 On and off state fault detection circuit for a multi-phase brushed or brushless DC motor
11/12/1996US5574341 Compound motor limiting control circuit for controllable shunt field winding by means
11/12/1996US5574320 Load drive circuit
11/07/1996WO1996035253A1 Battery recharging apparatus
11/07/1996WO1996035252A1 Apparatus for charging a battery
11/07/1996WO1996035036A1 Auto reverse power closure system
11/07/1996DE19520988C1 Fault analysis device for voltage supply appts.
11/06/1996EP0740860A1 High speed overvoltage detection and protection circuit
11/06/1996EP0740859A1 Electrostatic discharge circuit for high speed, high voltage circuitry
11/06/1996CN2239673Y Phase sequence relay having automatic phase changing
11/06/1996CN2239672Y Multifunctional thermal relay
11/06/1996CN1135111A Protective circuit for charging or discharging conversion
11/06/1996CN1135102A Charging terminal shortcircuit preventing circuit for battery pack
11/05/1996US5572138 Method and device for determining the direction to a fault on a power transmission line
11/05/1996US5571062 For a motor speed control circuit
10/1996
10/31/1996WO1996034450A1 Method and device for protecting regenerating resistor of servo motor for driving inverter
10/31/1996DE19532753A1 Method of controlling opening and closing of motorised opening and closing part of motor vehicle, esp. sun roof
10/30/1996EP0740385A2 Protection circuit for a switch mode power supply
10/30/1996EP0740384A2 Startup protection for a switch mode power supply
10/30/1996EP0740383A1 Device with a line connecting to an electrical distribution network through a circuit breaker, with at least one load and with an undervoltage protection
10/30/1996EP0740382A1 Device with a line connecting to an electrical distribution network, with at least one load and with an overvoltage protection
10/30/1996EP0740381A1 Device with a line connecting to an electrical distribution network, with a circuit breaker and with an undervoltage protection
10/30/1996EP0739778A2 Power window circuit board overcurrent protection
10/30/1996EP0739545A1 Circuit arrangement
10/30/1996CN2239098Y Electronic adjusting apparatus with overload and short circuit protection for generator automotive vehicle and ship
10/29/1996US5570260 Overvoltage protection circuit
10/29/1996US5570258 Phase monitor and protection apparatus
10/29/1996US5570257 Phase sequence wiring protection apparatus
10/29/1996US5570256 Induction machine protection device
10/29/1996US5570255 Overcurrent preventing circuit
10/29/1996US5570254 Method and device for preventing excessive currents in a welding converter
10/29/1996US5569966 Electric vehicle propulsion system power bridge with built-in test
10/29/1996US5569550 Battery pack having under-voltage and over-voltage protection
10/23/1996EP0739075A1 Power supply system
10/23/1996EP0739074A2 Power source miswiring detection apparatus
10/23/1996EP0738433A1 Method and device for determining the direction to a fault on a power transmission line
10/23/1996EP0738432A1 Device for differentially protecting a power transformer
10/23/1996EP0401299B1 A method and a system for monitoring and controlling an electric motor
10/23/1996CN2238499Y Current and voltage changer for mobile converting station
10/23/1996CN1134055A Precise multiangular arc relay
10/22/1996US5568399 Method and apparatus for power outage determination using distribution system information
10/22/1996US5568343 Circuit for protecting switching power source from overloads and shot circuits
10/22/1996US5568033 On-site electric motor start-up diagnostic tool
10/22/1996US5568025 Abnormally detecting device for relay
10/17/1996WO1996032067A1 Motor controlled surgical system and method having positional control
10/17/1996DE19514229A1 Electric drive load disconnector e.g. for tilting or hinged window casement
10/17/1996CA2216209A1 Motor controlled surgical system and method having positional control
10/16/1996EP0738032A2 Method for monitoring of movement of motorised adjustable objects
10/16/1996EP0452417B1 Flyback current dampening apparatus
10/16/1996CN2237901Y AC power electronic switch cabinet
10/16/1996CN1133508A Switch type power source with protective circuit