Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02H - Emergency protective circuit arrangements › H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031)
04/1998
04/08/1998CN2278295Y Phase-discriminating and amplitude-discriminating pulse type leakage protector
04/08/1998CN2278294Y AC motor multi-function protective controller for collecting and distributing control system
04/08/1998CN2278293Y Three-phase motor end energy-saving safety operation device
04/08/1998CN1178608A Delayed-action fault current of differential current circuit-breaker
04/07/1998US5737168 Electrical power management system
04/07/1998US5737167 Residual current safety switch
04/07/1998US5737166 Protective equipment in a bipolar HVDC station
04/07/1998US5737161 Overcurrent protection device and arrangement
04/07/1998US5737160 Electrical switches comprising arrangement of mechanical switches and PCT device
04/07/1998US5736877 Circuit configuration for detecting idling of a load
04/07/1998US5735254 Circuit for detecting an overvoltage on a switched inductive load
04/02/1998WO1998013921A1 Circuit arrangement for detection of current in an electric conductor to control electronically controllable tripping devices
04/02/1998WO1998013920A1 Circuit for detection of current in an electric conductor to control electronically controllable tripping devices
04/02/1998WO1998013919A1 Adaptive ground and phase fault detection for a power distribution system
04/02/1998WO1998013916A1 Circuit arrangement to provide electronic tripping devices with electricity
04/02/1998DE19641183A1 Schaltungsanordnung zur Stromerfassung eines Stromleiters zur Ansteuerung elektronisch steuerbarer Auslöseeinrichtungen Circuit arrangement for current detection of a conductor to control electronically controllable release mechanisms
04/02/1998DE19640340A1 Short-circuit detection for three-phase power transmission conductor
04/02/1998DE19637631A1 Anordnung zur Erkennung von Einklemmsituationen bei elektrischen Antrieben Configuration for detecting jamming situations in electric drives
04/02/1998DE19637435A1 Elektronische Sicherung Electronic Security
04/01/1998CN2277591Y Electrical equipment protecting device
03/1998
03/31/1998US5734576 Method and apparatus for remote testing of coordination of overcurrent protection devices in an electrical power system
03/31/1998US5734543 Method and apparatus to improve the performance of AC solenoid devices during lapses in power quality
03/31/1998US5734291 Power saving technique for battery powered devices
03/31/1998US5734256 Apparatus for protection of power-electronics in series compensating systems
03/26/1998WO1998012787A1 Actuator, in particular an electric motor gear drive system, for moving closure parts operated by extraneous force
03/26/1998WO1998012786A1 Jamming detection device for electrical drives
03/26/1998DE19638781A1 Stellantrieb, insbesondere Elektromotor-Getriebe-Antrieb, zur Bewegung von fremdkraftbetätigten Schließteilen Actuator, in particular electric motor-gear drive for movement of power-operated closing parts
03/26/1998DE19637574A1 Verfahren und Anordnung zur Abschaltung von Verbrauchern Method and apparatus for shutdown of consumers
03/25/1998CN2277139Y A.C power wave filter
03/25/1998CN2277136Y 保安开关 Security Switch
03/25/1998CN2277135Y Multifunctional household power-saving electric energy administrative device
03/25/1998CN2277134Y Separating cut-off device for precharged watt-hour meter
03/25/1998CN1177226A Sequence based network protector relay with forward overcurrent protection and anti-pumping feature
03/25/1998CN1177160A Alarm reporting apparatus
03/24/1998US5731943 For power systems
03/24/1998US5731942 To protect of electrical equipment operating on single phase power supplies
03/24/1998US5731698 Apparatus for detecting the amplitude and phase of an a.c. signal
03/19/1998WO1998011644A1 Method and arrangement for disconnecting consumers
03/19/1998WO1998011642A1 Electronic fuse
03/19/1998WO1998011641A2 Digital current differential system
03/19/1998WO1998011448A1 Methods and apparatus for detection of fault direction
03/19/1998DE19636975A1 Earth leakage circuit-breaker e.g. for protection of electrical equipment
03/18/1998EP0829939A2 Circuit with overload protection for a relay
03/18/1998CN2276678Y Domestic single-phase zero power-off earth leakage protective device
03/18/1998CN1176475A Apparatus and method for adjustment and coordination of circuit breaker trip curves through graphical manipulation
03/17/1998US5729421 Circuit analyzing system
03/17/1998US5729417 Ground fault circuit interrupter incorporating miswiring prevention circuitry
03/17/1998US5729104 Power window apparatus for vehicle
03/16/1998CA2215562A1 Sequence based network protector relay with forward overcurrent protection and anti-pumping feature
03/12/1998DE19741662A1 Procedure for fully selective reserve protection in cable networks with motors
03/12/1998DE19636338A1 Schaltungsanordnung zur Überwachung einer Elektronikauslöseeinrichtung für Niederspannungsschalter A circuit arrangement for monitoring an electronic tripping device for low-voltage switch
03/12/1998DE19635158A1 Electronic trip for circuit-breaker e.g. for motor protection relay
03/11/1998EP0828334A2 Overcurrent protection circuitry for non-isolated battery discharge controller
03/11/1998EP0828329A2 Apparatus and method for adjustment and coordination of circuit breaker trip curves through graphical manipulation
03/11/1998CN2276218Y Intelligence domestic electric protector
03/11/1998CN1175810A Overvoltage protection device
03/11/1998CN1037731C Protective circuit and protective plug for telecommunication installations
03/10/1998US5726850 Electrical heating apparatus
03/10/1998US5726847 Method of generating a protection-triggering signal
03/10/1998US5726843 Current limiting circuit breaker
03/10/1998US5726577 Apparatus for detecting and responding to series arcs in AC electrical systems
03/10/1998US5726505 Device to prevent reverse current flow, rectifier device and solar generator system
03/05/1998WO1998009362A2 Power back
03/05/1998WO1998009360A1 Circuit arrangement for monitoring of an electronic tripping device for low voltage switches
03/05/1998WO1998008479A1 Dual loop frequency and power control
03/05/1998WO1998008453A1 Surgical system providing automatic reconfiguration
03/05/1998WO1998008452A1 Modes/surgical functions
03/05/1998WO1998008451A1 Mechanical interlock for modules
03/05/1998WO1998008450A1 Ophthalmic microsurgical system employing flash eeprom and reprogrammable modules
03/05/1998WO1998008449A1 Surgical handpiece
03/05/1998WO1998008448A1 Numeric keypad simulated on touchscreen
03/05/1998WO1998008447A1 Surgical module with neuron chip communication
03/05/1998WO1998008446A1 Microsurgical system having isolated handpiece detection
03/05/1998WO1998008445A1 Ophthalmic microsurgical system
03/05/1998WO1998008442A1 Foot controller for microsurgical system
03/05/1998DE19708206A1 Excess power supply voltage switch-off circuit e.g. for protecting semiconductor element
03/05/1998DE19635826A1 Intermediate plug with incorporated fault-current circuit-breaker e.g. for video and Hi=Fi
03/05/1998DE19634440A1 Fault current detection method
03/05/1998DE19634439A1 Fault current measurement with intelligent GST distributor for electrical plant
03/05/1998DE19634438A1 Fault current or differential current (FI/DI) protection and G-type monitoring devices for dangerous shock currents
03/05/1998DE19634094A1 Stromversorgungsanlage für Inselnetze Power supply system for isolated networks
03/05/1998CA2264738A1 Ophthalmic microsurgical system
03/04/1998CN2275769Y Overvoltage protector for random reactive compensator
03/04/1998CN1175106A Electronic relay
03/04/1998CN1175105A Electronic differential circuit breaker
03/03/1998US5724247 Method of generating a signal indicating the direction of a short-circuit
03/03/1998US5724218 Power transistor with short-circuit protection
03/03/1998US5724026 Multiple output level power supply with overpower detection circuit
03/03/1998US5723915 For controlling current through a wire to a load
02/1998
02/26/1998WO1998008287A1 Power supply for separate networks
02/26/1998WO1998008286A1 Servo motor, in particular electric motor gear drive
02/26/1998DE19633941A1 Stellantrieb, insbesondere Elektromotor-Getriebe-Antrieb Actuator, in particular electric motor-gear drive
02/25/1998EP0825701A2 Coordinated cluster tool energy delivery system
02/25/1998EP0561900B1 Circuit protection device
02/25/1998CN1174489A Sampling method for electronic ballast protecting circuit
02/25/1998CN1174436A Earthleakage-current protection device
02/24/1998US5721659 Apparatus for protecting electrical and electronic equipment and associated method
02/18/1998CN2274831Y Open phase protector for electronic power supply
02/18/1998CN2274830Y Apparatus fro phase sequence inspection and open-phase protection
02/18/1998CN2274829Y Automatic single phase protector for voltage difference
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