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)
12/1992
12/22/1992	CA1311827C Electrical safety device
12/16/1992	EP0518785A1 Device for checking and measuring the insulation of a power line having an insulated neutral conductor
12/16/1992	EP0517888A1 Addressable relay module for circuit breakers
12/16/1992	EP0216816B1 Circuit for dissipating stored inductive energy
12/16/1992	CN2125142U Protector for avoiding electricity fraudulent use
12/15/1992	US5172291 Intelligent power controller
12/15/1992	US5172090 Electronic line sectionalizer with resettable actuator
12/08/1992	US5170360 Computer-based metering arrangement including a circuit interrupter
12/08/1992	US5170311 Overcurrent protection device
12/08/1992	US5170310 Fail-resistant solid state interruption system
12/08/1992	US5170309 Four-pole circuit breaker
12/02/1992	CN2123771U Five-function elecetric kilowatt-hour meter replacement
12/01/1992	US5168415 Motor control method
12/01/1992	US5168414 Faulted circuit indicator
12/01/1992	US5168236 Fault detection circuit for use in determining the existence of a fault in any one of a plurality of multi-phase loads
12/01/1992	CA1311044C High resistance ground fault protection
11/1992
11/25/1992	EP0515024A2 Circuit bypass device
11/25/1992	EP0514454A1 Device for motor and short-circuit protection.
11/25/1992	CN2123121U Electric energy saving ac contactor with open-phase protection
11/24/1992	US5166887 Microcomputer-controlled circuit breaker system
11/24/1992	US5166854 Externally discernible power supply abnormality detection system
11/24/1992	US5166852 Electronic circuit device for protecting electronic circuits from unwanted removal of ground terminal
11/22/1992	CA2068952A1 Isolation monitoring and measuring device for an electrical power system with isolated neutral
11/19/1992	EP0513405A1 Method and apparatus for current interruption in electrically-powered apparatus and equipment
11/19/1992	EP0513349A1 Method and device for radio-navigational determinations using artificial earth-satellites
11/19/1992	EP0513344A1 Fail-resistant solid state interruption system
11/19/1992	EP0513319A1 Display for a circuit breaker trip unit
11/18/1992	CN2122430U Auto-reset pullswitch
11/17/1992	US5164876 Static trip device comprising an earth protection desensitization system
11/17/1992	US5164875 Addressable relay module for circuit breakers
11/17/1992	US5164872 Load circuit commutation circuit
11/17/1992	US5164659 Switching circuit
11/12/1992	WO1992020130A1 Electrical protection devices
11/12/1992	DE4115295A1 Load current monitoring circuit with overload and short-circuit protection - uses current-voltage converter supplying overload and short-circuit detectors
11/12/1992	DE4115225A1 Fault current protection device for multi-pole network - uses saturation coils in neutral wire between branch point and possible short circuit point
11/11/1992	CN1066154A Three-phase electric motor phase-defect and leakage of electricity protector
11/11/1992	CN1066153A Multi-function electronic circuit breaker
11/10/1992	US5162664 Communications arrangement for an electronic circuit breaker trip system
11/10/1992	CA1310100C Solid-state trip device of a molded case circuit breaker
11/10/1992	CA1310062C Arrangement for controlling switchgear
11/04/1992	EP0511417A1 Method and means for suppressing geomagnetically induced currents
11/04/1992	CN2121091U Ac. dc overload protector
11/03/1992	US5161240 Electric wall switch with ground fault protection
11/03/1992	US5160926 Display transducer apparatus
10/1992
10/28/1992	CN2120398U Multi-function monitor for electro-consumption
10/28/1992	CN2120397U Internal safety protector for refrigerator and air conditioner
10/28/1992	CN2120396U Automatic active and energy-economizing photoelectric controller
10/28/1992	CN2120395U Time-delay cut-off type electricity-limiter
10/28/1992	CN2120385U Air switch with break and open-phase protection
10/28/1992	CN1018880B Solid-state trip apparatus containing circuit measuring zero phase sequence current
10/28/1992	CN1018879B Static leakage current relay
10/28/1992	CN1018878B Solid-state trip device of molded case circuit breaker
10/28/1992	CN1018877B Solid-state trip apparatus comprise circuit of instantaneous trip independent of power voltage
10/28/1992	CN1018876B Improved duplicate switching-in relay
10/27/1992	US5159561 Zero-phase sequence current detector
10/27/1992	US5159544 High voltage power supply control system
10/27/1992	US5159519 Digital circuit interrupter with an improved sampling algorithm
10/27/1992	US5159319 Faulted circuit detector having an isolated indicator for an electrical transformer
10/22/1992	DE4112996A1 Functional monitor for electrical load controlled by switch - measures voltage and/or current of control line by fault identification circuit when fault detection circuit is activated
10/21/1992	CN2119723U Driver for protecting semiconductor switch
10/20/1992	US5157579 Heat flow detector for recessed incandescent fixtures
10/20/1992	US5157575 Circuit breaker failure relay system for power transmission line systems
10/20/1992	CA2062931A1 Switchboards and panelboards having interlock and load selection capabilities
10/20/1992	CA1309136C Short-circuit protective circuit for uninterruptible power supply equipment
10/15/1992	WO1992017262A1 Filter for liquids, in particular internal-combustion engine lubricant oils
10/15/1992	DE4210119A1 Fuse monitoring method for power supply network - monitoring current variations in current converter secondary windings of individual phases and comparing with reference variations
10/15/1992	DE4131354A1 Fluid filter with annular element
10/15/1992	DE4112169A1 Fault current monitor e.g. for network with unearthed transformer secondary - has summing current converter supplying power to detector which supplies power to indicator with interruption button
10/15/1992	DE4111831A1 Release method for overcurrent protection switch - using measured current values and corresponding current gradients obtained by differentiation to trigger switch
10/14/1992	EP0508314A2 Circuit for detecting short-circuiting of inductive load drive devices
10/14/1992	EP0508177A2 Digital protection relay
10/14/1992	CN2119038U Automatic electric break protector for domestic electric appliance
10/14/1992	CN2118990U Automatic controller for avoiding or indicating fraudulent use of electricity
10/14/1992	CN1018688B Protector for null line breaking
10/08/1992	DE4110240C1 Vehicle current path protection device - separates battery from load upon occurrence of electrical fault
10/07/1992	EP0247059B1 Apparatus and method for protecting an electrical circuit
10/07/1992	CN2118385U Electronic ballast
10/07/1992	CN2118362U Multifunctioanl protector for using electricity
10/07/1992	CN2118361U Multifunctional electronic protector
10/07/1992	CN2118360U Three phase, loss of phase protector combined with phase order indicator
10/07/1992	CN1065173A Electronic ballast protective circuit and cathode preheating circuit
10/07/1992	CN1018597B Circuit and method for dc content protection of parallel vscf power systems
10/01/1992	WO1992013379A3 Electronic equipment for security, electric protection and optimalization of electric power connexion
10/01/1992	DE4131353A1 Fluid filter with annular element - has only element interchangeable
10/01/1992	DE4110495A1 Excess voltage protection circuit esp. load-dump voltage e.g. for vehicle battery - incorporates non-linear, controllable electrical resistor through which user current flows, and Zener diode regulates user voltage
10/01/1992	DE4110335A1 LV circuit short circuit branch - protects components against overcurrent by closing bridging branch to by=pass them when short circuit exists
09/1992
09/30/1992	EP0506602A2 Device and method for GFCI time response and ground test
09/30/1992	EP0506303A2 Dual wound trip solenoid
09/30/1992	EP0506220A2 Electronic spring charging motor controller
09/30/1992	EP0505602A1 Protection circuit for the electrical system of a vehicle
09/30/1992	EP0505531A1 Power supply for generating an output voltage mainly of sinusoidal shape.
09/30/1992	CN2117660U Phase failure protector for three circuits
09/30/1992	CN2117659U Multifunctional protector
09/30/1992	CN2117658U Self actuating protector for motor
09/30/1992	CN2117628U Automatic liquid level controlling and pump protecting apparatus
09/30/1992	CN2117616U Charge evasion preventer for single phase electric power meter
09/29/1992	US5151842 Switchboards and panelboards having interlock and load selection capabilities
09/29/1992	US5151638 Motor overload indicating arrangement
09/28/1992	CA2064170A1 Dual wound trip solenoid
09/24/1992	DE4118346C1 Fuse monitoring circuit for three=phase network - has resistor star networks placed on each side of fuse and monitors current to determine faulty fuses

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