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)
09/1990
09/05/1990EP0311649A4 Add-on ground fault module
09/05/1990EP0164407B1 Shock hazard protection system
09/05/1990CN1045201A Safety devices and overload protection circuits
09/04/1990US4955069 A.C. power controller with short circuit and overload protection
08/1990
08/29/1990EP0384881A1 Programmable safety electrical socket controller
08/29/1990EP0384788A1 Composable protection and control device for a motor
08/29/1990EP0384435A2 Power signal processing system
08/29/1990EP0384306A1 Process to generate trip signals for circuit breakers at short circuits in bus bars and/or bus bar sections
08/29/1990CN2061342U Fully automatic protective current limiter
08/29/1990CN2061341U Ac voltage-stabilizing time-delay protector
08/29/1990CN1045004A Dual-delay current limiter for reset after power-off
08/28/1990US4953054 Circuit for protection against fault currents
08/28/1990US4952915 Failed electrical component detector for multiphase electric machines
08/28/1990US4952854 Control device for a DC motor intended for in particular driving opening elements on automobile vehicles
08/27/1990CA2011007A1 Fail-safe and fault-tolerant alternating current output circuit
08/23/1990WO1990009694A1 Improvements in or related to circuit breakers used with electrical apparatus
08/23/1990DE4004400A1 Circuit for monitoring function of glow plugs of diesel engine - uses auxiliary evaluation circuit-monitor plugs concerning short circuit and min. current
08/22/1990EP0383543A1 Electro chemical machining
08/22/1990CN2060958U Power-saving and protecting voltage-adjusting equipment for single-phase sensitive electric appliances
08/22/1990CN2060954U Protecting devices guarding against alternating current phase interruption and over-voltage
08/21/1990US4951170 Method for protecting an electric object to be protected
08/21/1990CA1273051A1 Failing lamp monitoring and deactivating circuit
08/15/1990CN2060602U Fully automatic single phase using electricity protector
08/14/1990US4949214 Trip delay override for electrical circuit breakers
08/14/1990US4949211 Protective, bi-level drive for FET's
08/14/1990CA1272785A1 Door and door curtain controller
08/08/1990EP0381131A2 Power controller with voltage-controlled circuit breaker
08/08/1990CN2060267U Electrical leakage protector
08/08/1990CN2060266U Protector for using electricity
08/08/1990CN2060265U Five-function electronic protector
08/07/1990US4947427 Protection arrangement for a telephone subscriber line interface circuit
08/07/1990US4947278 Remote sensing power disconnect circuit
08/07/1990US4947109 Detector of quantity of electricity
08/02/1990DE3902416A1 Overcurrent-sensitive circuit breaker
08/02/1990DE3902400A1 Electric water heater
08/01/1990CN2060021U Protection power-saving apparatus for three-phase interruption
08/01/1990CN2060019U Power saving protecting controller for refrigerator
08/01/1990CN1044342A Multifunction device for prevention of electricity-stealing
07/1990
07/31/1990US4945445 Current sense circuit
07/31/1990US4945443 Electronic circuit interrupter with combined keypad and display
07/31/1990US4945358 Short circuit protection arrangement for a driver circuit
07/31/1990US4944369 Safety device for elevator
07/31/1990CA1272302A1 High voltage protecting circuit
07/31/1990CA1272233A1 Circuit breaker trip solenoid assembly
07/30/1990CA2008660A1 Power controller with voltage-controlled circuit breaker
07/25/1990EP0378786A2 Differential protective relay apparatus
07/25/1990CN2059775U Multifunction electronic controller
07/25/1990CN2059774U Power failure self-cut-off device
07/25/1990CN1008957B Solid-state trip unit of electrical circuit breaker with contact wear indicator
07/24/1990US4943888 Electronic circuit breaker using digital circuitry having instantaneous trip capability
07/24/1990US4943886 Circuitry for limiting current between power inverter output terminals and ground
07/18/1990CN2059535U Over-current and -load protecting circuit for dry-reed switch
07/17/1990US4942313 Method for detecting a current flowing over the human body between a forward and a return conductor and a circuit configuration for carrying out the method
07/17/1990CA1271810A1 Shutdown control means for an electric power supply
07/12/1990WO1990007381A1 High voltage power supply control system
07/11/1990CN2059282U Three phase four wire anti-electricity stealing adapter
07/11/1990CN2059281U Phase-lost protector
07/11/1990CN2059280U Multi-functional automatic electronic protector
07/11/1990CN2059279U Fully automatic conditioner (refrigerator) protector
07/11/1990CN2059278U Current phase lost protector
07/11/1990CN2059277U Household electric protective switch
07/11/1990CN2059276U Multi-functional electirc protective device
07/11/1990CN1043834A Over-and under-voltage electronic protector and circuit
07/11/1990CN1043833A Improved duplicate switching-in relay
07/04/1990EP0375797A1 Circuit breaker
07/04/1990CN2059032U Automatic protective switch for electric motor (appliances)
07/04/1990CN2059031U Single-direction leakage protective efficient switch
07/04/1990CN2059030U Self-protective electric cantact protector
07/04/1990CN2059029U Leakage-protective ac contactor
07/04/1990CN2059028U Protector for tv set
07/04/1990CN2059027U Safety device for domestic electric appliances
07/04/1990CN1043571A Current sensing
07/03/1990US4939617 Method and apparatus for monitoring an AC transmission line
07/03/1990US4939438 Relay control assembly
06/1990
06/28/1990WO1990007214A1 Method and apparatus for protecting electrical systems
06/28/1990DE3842921A1 Circuit arrangement for monitoring the current of electrical loads
06/28/1990DE3842169A1 Circuit arrangement with an FET output stage
06/27/1990EP0375262A2 Electrothermal sensor
06/27/1990EP0374506A2 Emergency remote opening device, particularly for differential switches
06/27/1990EP0374417A2 Protection device for electrical apparatuses
06/27/1990CN2058791U Leakage protector of electronic device
06/27/1990CN2058790U Under-voltage leakage shutoff protector
06/27/1990CN2058789U Emergency overvoltage shutoff device of ac power supply
06/27/1990CN2058788U Combination circuit status switching means
06/27/1990CN2058787U New-type power-saving controller
06/26/1990US4937769 Apparatus and method for reducing transient exponential noise in a sinusoidal signal
06/26/1990US4937757 Digital circuit interrupter with selectable trip parameters
06/26/1990US4937696 Circuit breaker and current-limiting device of ceramic positive temperature coefficient resistor
06/20/1990EP0373713A2 Semiconductor circuit having an excess voltage protection circuit
06/20/1990EP0373712A2 Excess voltage protection circuit
06/20/1990EP0373676A2 Protection apparatus against electrical overvoltages
06/20/1990EP0373347A1 Protection device for an electrical resource
06/20/1990CN2058537U Automatic protector for domestic electrical appliance
06/20/1990CN2058536U Automatic power-off energy-saving device
06/20/1990CN2058534U Leakproof and shock-proof protective socket
06/20/1990CN1043230A Vector difference type electric shock protector
06/20/1990CN1043223A Controlled air blowing cut-off device
06/19/1990US4935836 Guard circuit for the protection of capacitive loads
06/16/1990CA2001259A1 Over-voltage protection of quasi-resonant converters using state-vector feedback techniques
06/14/1990WO1990006519A1 Apparatus and method for current sensing
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