Patents
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)
06/1995
06/14/1995CN2200820Y Watt-hour meter with anti-steal, anti-leak and anti-touch electric
06/13/1995US5424894 Electrical line-fault detector and circuit breaker device
06/13/1995US5424893 Gas discharge device power supply with ground fault protection
06/07/1995EP0656678A1 Detector device for homopolar faults on an electric energy distribution network
06/07/1995CN2200252Y Protector of motor
06/07/1995CN2200251Y Electrical leakage protector for big three-phase electrical equipment
06/07/1995CN2200250Y Power supply protector for hot-air curtain machine
06/07/1995CN2200249Y Domestic remote control protecting switch
06/07/1995CN2200248Y Automatic protector of low voltage electrifield wire netting controlled by computer
06/07/1995CN2200247Y Tracking type electronic protector
06/07/1995CN2200246Y Electronic safety protecting automatic controller
06/07/1995CN2200245Y Multifunctional protector
06/07/1995CN2200185Y Terminal box for single phase electric energy meter
06/06/1995US5422778 Protection system for controller and control wiring induced under voltage faults in an electric power generating system
06/06/1995US5422551 Safety device and method for power window
06/02/1995CA2136909A1 Electrical power distribution system apparatus-resident personality memory module
05/1995
05/31/1995EP0655820A1 Ground fault circuit interrupter
05/31/1995EP0655784A1 Triangular protection component
05/31/1995CN2199626Y Multifunctional protector for low-voltage network
05/31/1995CN2199625Y DC over-current relay
05/30/1995US5420740 Ground fault circuit interrupter with immunity to wide band noise
05/30/1995CA2033427C Method and apparatus for detecting stall current in an energized electrical motor
05/24/1995EP0654882A1 Process for monitoring movable elements
05/24/1995DE4339569A1 Voltage monitoring and fault signalling apparatus
05/24/1995DE4333259C1 Verfahren zum Erzeugen eines die Richtung eines Kurzschlußstromes angebenden Richtungssignals A method for generating a direction of a short-circuit current direction indicative signal
05/24/1995CN2198702Y Automatic controller for low voltage electric load
05/24/1995CN2198697Y Excess voltage and excess current protector
05/24/1995CN2198696Y Device for electric drill and lighting in mine
05/24/1995CN2198680Y Household electric appliance safety distribution device
05/23/1995US5418679 Circuit for overriding the cripple mode so that the relay remains latched
05/23/1995US5418678 Manually set ground fault circuit interrupter
05/17/1995EP0653234A1 Liquid filter
05/17/1995EP0653111A1 Reverse-polarity protection by means of a protecting element having a reduced surface.
05/17/1995EP0653110A1 Reverse-polarity protection with reduced element surface.
05/17/1995EP0653073A1 Electric arc detector
05/17/1995CN1102745A Communication line safety device with alarming device
05/16/1995US5416689 Current mode switching power supply overload protection circuit with false fault condition screening
05/11/1995DE4338283A1 Textile machine producing cross-wound bobbins
05/10/1995EP0651921A1 Current limiters in power utility applications
05/10/1995CN2196819Y Power-saving protection device for AC contactor
05/10/1995CN2196792Y Automatic voltage-regulating protector for super-low power-consumption integreted circuit
05/10/1995CN1102514A Bypass-type leading control circuit with extra A.C. power
05/03/1995EP0651488A1 An electrical protection device
05/03/1995EP0650615A1 A fault-tolerant computer system
05/03/1995CN2196329Y Over-current protection plug
05/03/1995CN2196306Y Electricity-stealing-proof single phase watt-hour meter
05/02/1995US5412528 Safety disconnect system
05/02/1995US5412526 Surge arrester circuit and housing therefor
05/02/1995CA2024488C Method and apparatus for line power monitoring for uninterruptible power supplies
04/1995
04/26/1995EP0649585A1 Switching arrangement for a communications channel
04/26/1995EP0649584A1 Remotely actuated switch and protection circuit
04/26/1995CN2195815Y Pulling safety power-saving switch
04/19/1995EP0649207A1 Self-testing circuit breaker ground fault and sputtering arc trip unit
04/19/1995EP0649206A1 Ground fault circuit interrupter with immunity to wide band noise
04/19/1995CN2195150Y Energy-saving failure memory protector for asynchronous motor
04/19/1995CN2195149Y Solid phase failure protector
04/19/1995CN2195148Y Power supply overvoltage protector for vehicle
04/19/1995CN2195147Y Electronic current overload protection relay for vehicle
04/11/1995US5406438 Apparatus for triggering chemically augmented electrical fuses
04/11/1995US5406437 Zero phase sequence current filter with adjustable impedance
04/11/1995CA2058549C Arc preventing electrostatic power supply
04/06/1995WO1995009469A1 Method of generating a protection-triggering signal
04/06/1995WO1995009467A1 Method and device for identifying single ground faults
04/06/1995WO1995009465A1 Method of generating a signal indicating the direction of a short-circuit
04/06/1995WO1995009464A1 Method of generating fault signals indicating the nature of a fault in an electrical power-supply network to be monitored
04/06/1995WO1995009463A1 Method of generating a fault-indication signal
04/06/1995DE4434705A1 Method and device for monitoring at least two redundant controller channels of an exciter device of an electric generator
04/05/1995EP0647005A1 Parallel and series protection module
04/05/1995EP0596879B1 Process and arrangement for recognizing defects in power converters
04/05/1995EP0483165B1 A ground fault circuit interrupter having loss of neutral or loss of ground protection
04/04/1995US5404083 Energy-efficient cost-effective electronic ballast
03/1995
03/30/1995WO1995008857A1 Switching installation for distributing electric power protected against arc interference
03/30/1995DE4333156A1 Circuit arrangement for connecting an electronic assembly to an operating voltage
03/30/1995DE4332319A1 Device for reducing interfering radiation and for reducing electrical power losses in electrical networks (power supplies)
03/29/1995EP0645865A2 Surge protection device and system
03/29/1995EP0645029A1 Automatic venting system for a vehicle
03/29/1995CN2193601Y Current leakage protecting socket
03/28/1995US5402299 Coordination arrangment for protective devices in electrical systems
03/28/1995US5402071 Ground fault monitoring device for an electrical power distribution system
03/23/1995DE4344013C1 Electrical circuit arrangement
03/23/1995DE4331992A1 Cell-like switching installation which is protected against internal arcs, for distribution of electrical energy
03/21/1995US5400206 Short circuit and overload protection circuit which allows a predetermined number of reconnection attempts
03/21/1995US5400205 Breaker fail-safe system for a multi-channel electric power generating system
03/21/1995US5400204 System for detecting a breakage of a power cable for an elevator system
03/21/1995US5400202 Electrostatic discharge protection circuit for integrated circuits
03/21/1995US5399974 Fault current filter
03/21/1995US5399950 Automatic venting system for a vehicle with obstruction detection utilizing dynamically modified thresholds
03/16/1995WO1995007571A1 A.c. controller
03/16/1995WO1995007548A1 Current limiting device
03/16/1995DE4330823A1 Antriebsvorrichtung mit einer Sicherheitseinrichtung für den Sonderbetrieb Drive device with a safety device for special operation
03/16/1995CA2171187A1 Ac power controller
03/15/1995CN2192122Y Automatic protector for transformer of neon lamp
03/15/1995CN2192101Y AC static disposition protective switch controller
03/09/1995DE4400657C1 Arrangement for the mains disconnection of a control device
03/09/1995DE4331640C1 Method and device for turning off or reversing a drive arrangement for a motor vehicle part which can be moved
03/09/1995DE4330944A1 Method for predictive current limiting in a solid-state railway current converter
03/08/1995EP0642198A1 Electronic load protecting device
03/08/1995EP0641496A1 Method and device for preventing understabilization of longitudinal differential protection in case of external fault and current transformer saturation.
03/08/1995CN2191495Y AC voltage selector
03/08/1995CN2191487Y 剩余电流动作保护器 Residual current operated protective devices