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)
04/1996
04/30/1996US5512883 Method and device for monitoring the operation of a motor
04/30/1996US5512811 Starter/generator system having multivoltage generation capability
04/25/1996DE4437351A1 Adjustment of protection circuit of motor for document shredder cutter drive
04/24/1996EP0707751A1 Process for controlling the d.c. motor used for moving a window in a motor vehicle
04/24/1996EP0655166B1 Protective device for an electrical consumer
04/24/1996CN1121276A Motor operation controller and insulation type bidirectional DC voltage converter
04/24/1996CN1121164A Air conditioning device
04/23/1996US5511183 Non-volatile memory controlling apparatus and applications of the same to electronic computer peripheral equipments
04/23/1996US5510944 Power supply over-voltage protection
04/23/1996US5510687 Electric motor controller with temperature protection
04/23/1996US5510658 Circuit breaker device for electric vehicle
04/17/1996EP0707367A1 Ground fault detecting apparatus and method for detecting ground fault of field circuit and exciting circuit by detecting ground fault current flowing from ground to neutral point of exciting circuit
04/17/1996CN2225109Y Switch DC-DC inverter
04/17/1996CN2225108Y Multi-channel electronic relay
04/16/1996US5508620 Method and device for determining ground faults on the conductors of an electrical machine
04/16/1996US5508601 Protection system for a shorted rectifying diode within a synchronous generator
04/11/1996WO1996010862A1 Rectifier bridge apparatus
04/11/1996WO1996010857A1 Current differential protection arrangement
04/11/1996DE4445060C1 Power switch with electronic tripping device
04/11/1996DE19524005A1 Motorbetriebsregler und bidirektionaler Isolations-Gleichspannungsumformer Engine operating controls and bidirectional isolation Gleichspannungsumformer
04/11/1996DE19512018C1 Magnetic field compensation circuit for HV cable
04/11/1996CA2176116A1 Rectifier bridge apparatus
04/10/1996EP0608290B1 Method and device for avoiding overcurrents in a welding converter
04/09/1996US5506743 Solid state overload relay with phase unbalance protection having RMS current approximation
04/09/1996US5506487 Systems and methods for driving a compressor with a motor
04/09/1996US5506485 Digital modular microprocessor based electrical contactor system
04/04/1996WO1996010288A1 Method and device for monitoring at least two redundant control channels for an electric-generator exciter
04/04/1996WO1996010223A1 Delayed safety braking apparatus for a servomotor control system
04/04/1996CA2201289A1 Delayed safety braking apparatus for a servomotor control system
04/03/1996CN2223866Y Four-in-one type phase-lost protective switch for motor
04/03/1996CN2223865Y Phase-lost protective device for electric motor
04/02/1996US5504446 AC voltage clipper in MOS-technology
04/02/1996US5504405 Switch machine controller with fail safe mechanism
03/1996
03/28/1996WO1996009676A1 Transient voltage protection circuit for electrical power converters
03/28/1996WO1996009674A1 Automatic overvoltage protection for an alternator in a locomotive propulsion system
03/28/1996DE4443602A1 On/off and directional controller for mains powered vent actuator
03/28/1996DE19533968A1 Semiconductor power-switching circuit with self-diagnosis function
03/28/1996DE19501373A1 Halbleiter-Verbundelement und Verfahren zum Detektieren von Fehlerzuständen in einer das Element enthaltenden Wechselrichtereinrichtung Semiconductor compound element and method for detecting fault conditions in an inverter device, the element containing
03/28/1996CA2174096A1 Automatic overvoltage protection for an alternator in a locomotive propulsion system
03/27/1996CN1119359A Semiconductor composite element, and method of detecting abnormal conditions in an inverter device having the element
03/26/1996US5502613 Superconducting magnet abnormality detection and protection apparatus
03/26/1996US5502611 Circuit for providing phase loss and phase imbalance protection
03/26/1996US5502610 Switching regulator having high current prevention features
03/26/1996US5502368 Hybrid alternator with voltage regulator
03/26/1996US5502362 Asynchronous machine with a short-circuit rotor
03/20/1996CN2222978Y General electronic battery cell for motorcycle
03/20/1996CN2222976Y Open delta phase interruption protection arrangement
03/20/1996CN1118878A Device for detecting fault of dc-to-ac converter system
03/14/1996WO1996008067A1 A self-excited oscillator type switch power supply with overcurrent protection
03/14/1996WO1996008066A1 Circuit for operating an electric motor
03/14/1996WO1996008065A1 Circuit for operating an electric motor
03/14/1996WO1996007566A1 Windscreen wiper device
03/14/1996DE4432059A1 Schaltung zum Betreiben eines Elektromotors Circuit for operating an electric motor
03/14/1996DE4432058A1 Schaltung zum Betreiben eines Elektromotors Circuit for operating an electric motor
03/13/1996EP0701312A2 Arcing fault detector
03/13/1996EP0700590A1 Control of electric loads during generator failure in a multi-generator system
03/13/1996CN2222410Y Phase-lose protector for electric motor
03/13/1996CN2222409Y Antijamming solid protector against phase interruption
03/13/1996CN1118530A Overvoltage protection circuit
03/13/1996CN1118460A Regulator with an overcurrent protection device
03/12/1996US5499186 Three-phase power converter with fail soft characteristics
03/12/1996US5499154 Protective shut-down system for switch-mode power supply
03/12/1996CA2024588C Switching regulator of a simple structure capable of reducing a switching loss
03/12/1996CA2017074C Frequency control based on sensing voltage fed to an induction motor
03/07/1996DE4431699A1 Scheibenwischvorrichtung Windshield wiper device
03/07/1996DE4042496C2 Safety closure system for automatic door or window
03/06/1996CN2221836Y Protective starter for motor
03/06/1996CN1118119A Self excited switch source with overcurrent protection
02/1996
02/29/1996DE19507541C1 Electric operating drive for automobile sunroof or convertible roof
02/28/1996EP0698955A1 Method for reducing the dynamic closing force of motor operated doors and motor control apparatus for carrying out the method
02/27/1996US5495381 Protection system for undetected over voltage in an isolated voltage regulator
02/27/1996US5495164 Boost converter
02/27/1996US5495149 Power supply
02/21/1996EP0697757A1 Electrostatic discharge protection circuit for an integrated circuit device
02/21/1996CN2220701Y Multifunction electric bicycle
02/21/1996CN2220698Y Protector for motor a.c. contactor adhesion
02/21/1996CN2220697Y Three-phase motor protector
02/21/1996CN1117213A Full-function protector for electric machine
02/20/1996US5493485 Protection device for stopping operation of an inverter
02/20/1996US5493468 Electrical contactor system with transfer of scaled overload information
02/20/1996US5493228 Method and device for measuring and recreating the load current in a power network in connection with the occurrence of faults
02/20/1996US5493197 Battery charge control circuit
02/20/1996US5493191 B-type actuator with time out
02/20/1996US5493154 Temperature share scheme
02/20/1996US5491978 Electronically commutated motor for driving a compressor
02/15/1996DE4428443A1 Vehicle electric motor monitoring and control method
02/14/1996EP0696842A1 Inverter for pumps and a pump unit therewith
02/14/1996EP0696830A1 Locating earth faults in electric networks with grounding coil
02/14/1996CN1116741A AC line stabilization circuitry for high power factor loads
02/13/1996US5491601 Circuit for detecting a short circuit in a low side driven load
02/07/1996EP0584155B1 A motor reverse system
02/07/1996CN2219556Y Safety leader circuit controller
02/06/1996US5488834 Control circuit for a refrigerating system
02/01/1996DE4436254C1 Differential current protection device for electrical energy supply
02/01/1996DE4426961A1 Overload protection for DC motor arranged in primary or main circuit for current
01/1996
01/31/1996EP0695024A2 Air conditioning device
01/31/1996EP0694694A1 Automatic pump control system with variable test cycle initiation frequency
01/31/1996EP0694226A1 Method of monitoring a temperature rise of a squirrel cage induction motor
01/31/1996CN2218986Y Motor three phase contactor with phase interruption protective function
01/31/1996CN2218985Y Phase-loss, over-load protector for motor