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)
10/2000
10/11/2000CN1057409C Electrical differential protection apparatus with test circuit
10/05/2000WO2000059094A2 Devices and methods for protection of rechargeable elements
10/05/2000WO2000059089A1 Integrated switch devices with enhanced functionalities
10/05/2000WO2000059088A1 Power line protection devices and methods capable of preventing false fault reporting
10/05/2000DE19915234A1 Circuit arrangement with security function to recognize individual errors and prevent unexpected attempt of unauthorized, unintentional or erroneous switching-off
10/04/2000EP1040497A1 An electric switching device and a method for performing electric disconnection of a load
10/04/2000CN2399873Y Over-current protector for railway electrical zone rail circuit
10/04/2000CN2399872Y Protector
10/03/2000US6128170 Analog based first and fast second pulse removal system
10/03/2000US6128169 Arc fault detector with circuit interrupter and early arc fault detection
10/03/2000US6127882 Current monitors with independently adjustable dual level current thresholds
10/03/2000US6127747 Method and apparatus for detecting leakage current on a two wire DC or AC power line
09/2000
09/28/2000DE19915458C1 Device for mains release of one or more supply lines connects load to supply line if load switched on signal is received and separates supply line from mains if not
09/27/2000CN2398760Y Automatic electric protector for electrical equipment
09/27/2000CN2398758Y Protector for domestic electrical equipment
09/27/2000CN2398641Y Withstand voltage testing instrument
09/27/2000CN2398050Y Change-over switch used on electric welder
09/27/2000CN1267937A Automatic phase failure control circuit for triphase power supply
09/27/2000CN1267936A Safety circuit for connector
09/26/2000US6124798 Alarm device designed to warn of danger of hitting high voltage power line by crane in motion
09/26/2000CA2079468C Arcing fault detector
09/26/2000CA2064027C Ground fault circuit interrupter
09/21/2000WO2000055952A1 Mimic high pass filter in a protective relay
09/21/2000WO2000055826A1 Ground fault location system and ground fault detector therefor
09/21/2000WO2000017728A3 Computer controlled ac electrical terminations and network
09/20/2000EP1036398A1 Electromagnetic relay
09/20/2000EP0756771B1 Power supply over-voltage protection
09/20/2000CN2397656Y Phase-demodulating amplitude-discriminating electrical shock leakage action relay
09/20/2000CN1267401A Method and device for monitoring insulation and fault current in electric AC network
09/19/2000US6122155 Mini appliance leakage current interrupter
09/19/2000US6121886 Method for predicting fault conditions in an intelligent electronic device
09/14/2000WO2000054121A1 Electronic cut-out preventing electric and/or electrically controlled consumers from undesirable temperature changes
09/13/2000CN2396557Y Multifunctional protector for motor and speed reducer
09/13/2000CN2396556Y Cut-off alarm switch
09/13/2000CN2396534Y Grounding failure protecting socket
09/12/2000US6118641 Overcurrent protection device
09/12/2000US6117126 Surgical module with independent microprocessor-based communication
09/08/2000WO2000052803A1 Closing device with a safety function
09/07/2000DE19909591A1 Sicherungssystem Security system
09/06/2000EP1033288A2 Fuse system for motor vehicles
09/06/2000CN2395448Y Leakage current action protector with sensor
09/06/2000CN1265539A Power supply control equipment and method
09/06/2000CN1265531A Automatically restoring electronic fuse device
09/05/2000US6115675 Double interpolation anti-skew compensation of sampled analog data points in a protective relay
08/2000
08/31/2000WO2000051218A1 Current monitors with independently adjustable dual level current thresholds
08/31/2000WO2000051216A1 Method and apparatus for providing uninterrupted communication over a network link
08/31/2000DE19908658A1 Schließvorrichtung mit Sicherheitsfunktion Closing device with safety function
08/31/2000DE19907606A1 Hand controller for reading or writing parameters for inverter for electric motor has fields with pictograms and/or text, each with at least one associated lighting device, e.g. LED or lamp
08/30/2000CN2394362Y Multifunctional automatic electric power saver against charge evasion
08/30/2000CN2394343Y Socket with leakage protector
08/29/2000US6112135 Appliance control system
08/29/2000US6111733 Intelligent ground fault circuit interrupter
08/29/2000US6111732 Apparatus and method for detecting ground fault
08/29/2000US6111374 Movable barrier operator having force and position learning capability
08/29/2000CA2063977C Circuit bypass device
08/23/2000EP1028814A1 Spray gun power supply unit monitor
08/23/2000CN2393241Y Multifunction self-resetting safety fuse
08/23/2000CN2393240Y Electroshade protector
08/23/2000CN2393102Y Apparatus for preventing fraudulent use of electricity and electroshock for electricity meter
08/23/2000CN1055807C Driving device for induction motor
08/22/2000US6108796 Fault tolerant multi-drop communications system
08/22/2000US6108185 Circuit breaker having hall effect sensors
08/22/2000US6107926 Load short-circuit failure detection method and apparatus and electric power steering device
08/22/2000US6107765 Movable barrier operator having force and position learning capability
08/22/2000US6107664 Self-locking static micro-circuit breaker
08/22/2000US6107611 Method and apparatus for detecting ground faults in a shielded heater wire by sensing electrical arcing
08/22/2000US6107560 Photovoltaic power generation apparatus
08/22/2000US6106512 Numeric keypad simulated on touchscreen
08/17/2000WO2000048285A1 Lightning arrestor device for high power electric installations
08/17/2000WO2000048283A1 Method and apparatus for automated reconfiguration of an electric power distribution system with enhanced protection
08/17/2000WO2000048282A1 Multiple communications protocols in a protective relay
08/17/2000WO2000048281A2 Distributed logic in multiple protective relays
08/17/2000WO2000048149A1 Modular power quality monitoring device
08/17/2000WO2000011773A9 Method for performing instantaneous protection in a trip unit
08/17/2000CA2362226A1 Lightning arrestor device for high power electric installations
08/17/2000CA2326396A1 Multiple communications protocols in a protective relay
08/16/2000EP1028605A1 Switching device with parallel failure detection
08/16/2000EP1028526A2 Switching device with weak-current detecting function
08/16/2000EP1028511A2 Power supply system having semiconductor active fuse
08/16/2000EP1027759A1 Load indicator
08/16/2000EP1027758A1 Protective relay with modular control panel
08/16/2000EP1027757A1 Redundant communications in a protective relay
08/16/2000CN2392293Y Breaker for secondary loss of phase protection
08/16/2000CN2392290Y Phase-detecting amplitude-detecting type leakage relay
08/15/2000US6104583 Overcurrent protection systems
08/15/2000US6104352 Remote testing and monitoring apparatus for use with antenna reflector deicing systems
08/15/2000US6104302 Fuse protected power supply circuit for a sensor-operated solenoid
08/15/2000US6104156 Device for controlling the stopping of a motorized shrouding product
08/10/2000WO2000046896A1 Protection relay for a circuit breaker
08/10/2000DE19904405A1 Fehlerstromschutzschaltungsanordnung Fault protection circuitry
08/09/2000EP1026805A2 Earth leakage protective circuit
08/09/2000EP1024985A1 Circuit configuration to monitor a regulated output voltage in a motor vehicle
08/09/2000CN2391363Y Open type zero-sequence current protector
08/09/2000CN2391362Y Overvoltage automatic cutout socket
08/09/2000CN2391361Y Multifunction power-off protector
08/09/2000CN2391301Y Vacuum explosive proof intelligent contactor
08/09/2000CN2391205Y Automatic pole exchange apparatus with electric current test feedback function
08/09/2000CN1262802A Method and system for detecting shot-circuit in low-voltage mains
08/09/2000CN1262542A Overcurrent, leakage and electric shock protector
08/09/2000CN1262444A Improved circuit monitoring equipment
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