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)
12/1999
12/01/1999EP0961380A2 Protection circuit arrangement for disconnecting a direct current circuit
12/01/1999CN2351901Y High-voltage display blocking apparatus
12/01/1999CN1237025A Bus relay protector
12/01/1999CN1237024A Controlling system, protection controlling system for power system and storage medium for storing program
12/01/1999CN1047036C Short-circuit protection circuit
11/1999
11/30/1999US5996089 Loosely coupled mass storage computer cluster
11/30/1999US5995393 Latching shutdown and delayed restart of DC power supply in broadband network
11/30/1999US5995350 Temperature controlled circuit interrupter
11/30/1999US5995348 Ground safety device for medical ultrasound probes
11/30/1999US5994845 Electrical light socket
11/30/1999US5994790 Method of detecting abnormal electric current in vehicle apparatus for detecting abnormal electric current in vehicle and power supply apparatus for vehicle
11/25/1999WO1999060683A1 Battery pack protection circuit
11/25/1999WO1999060681A1 Power circuit breaker
11/25/1999CA2332846A1 Battery pack protection circuit
11/24/1999EP0958642A1 Circuitry for operating an electronic tripping device in a circuit breaker
11/24/1999CN2350897Y Quick cut-out small cut-out - leakage protection socket
11/24/1999CN1236309A Surgical system providing automatic reconfiguration
11/24/1999CN1236212A Method and device for separating animal's electric shock signal
11/24/1999CN1236211A High current protection circuit for telephone interface
11/23/1999US5991142 Detection of ophthalmic surgical handpiece by injecting current signal
11/23/1999US5990726 Circuit configuration to detect excess temperature due to current flow
11/23/1999US5990724 Method and a device for detecting and handling short-circuit phenomena for power semiconductor devices of turn-off type connected in series
11/23/1999US5990570 Power supplying apparatus for a vehicle and an intensive wiring apparatus
11/18/1999WO1999059224A2 Electrical light socket
11/17/1999EP0957558A2 Circuit interrupter with test actuator for ground fault and arc fault test mechanisms
11/17/1999EP0957557A2 Electrical switching apparatus employing a circuit for selectively enabling and disabling a close actuator mechanism
11/17/1999EP0957556A2 Electrical switching device or trip unit acquiring predetermined settings from another electrical switching device or trip unit
11/17/1999EP0957555A2 Electric power system protection and control system
11/17/1999EP0955984A1 Dual loop frequency and power control
11/17/1999EP0955899A1 Foot controller for microsurgical system
11/17/1999CN2349715Y Short-circuit protective automatic switch
11/17/1999CN2349616Y Power source safety monitoring alarm device for fieldwork
11/17/1999CN1235535A Dual loop frequency and power control
11/17/1999CN1235531A Ophthalmic microsurgical system employing flash EEPROM and reprogrammable modules
11/17/1999CN1235530A Numeric keypad simulated on touchscreen
11/17/1999CN1235529A Modes/surgical functions
11/17/1999CN1235528A Surgical module with neuron chip communication
11/17/1999CN1235527A Foot controller for microsurgical system
11/16/1999US5987393 Method of configuring a microprocessor-based relay for use in overcurrent protection
11/16/1999US5987335 Communication system comprising lightning protection
11/16/1999US5986903 Control apparatus for a converter for transmitting electric power between an alternating voltage network and a direct voltage network
11/16/1999US5986902 Integrated protection circuit, method of providing current-limiting and short-circuit protection and converter employing the same
11/16/1999US5986866 Solid state overload relay
11/16/1999US5986865 Battery protection device and a battery device employing such a battery protection device
11/16/1999US5986860 Zone arc fault detection
11/16/1999US5986557 Three-phase fuse status indicator
11/16/1999US5986442 Load drive device having short-circuit protection function
11/12/1999CA2271896A1 Circuit interrupter with test actuator for ground fault and arc fault test mechanisms
11/11/1999DE19820613A1 Safety device for monitoring explosive area e.g. for detecting dangerous gases in boiler room
11/11/1999CA2271443A1 Electrical switching device or trip unit acquiring predetermined settings from another electrical switching device or trip unit
11/10/1999EP0955724A1 Short-circuit protection circuit, particularly for power transistors
11/10/1999EP0955660A1 Electric circuit breaker for apparatus having a current overload and undervoltage function and a current overload sensor therefore
11/10/1999EP0954771A1 System and method for providing backup protection in a power substation
11/10/1999CN2348514Y Mains switch for domestic electrical equipment
11/10/1999CN2348513Y Shockproof power supply protector for microelectronic equipment
11/10/1999CN2348512Y Electronic protecting device for domestic electrical equipment
11/09/1999US5982596 Load center monitor and digitally enhanced circuit breaker system for monitoring electrical power lines
11/09/1999US5982595 Redundant communications in a protective relay
11/09/1999US5982593 Circuit interrupter with test actuator for ground fault and arc fault test mechanisms
11/04/1999WO1999056373A1 Inrush current limiting protection circuit
11/04/1999WO1999056372A1 Electronic overcurrent tripping device with a rated current plug connector
11/04/1999WO1999056371A1 Circuit breaker having a tripping device and parameterization blocking
11/04/1999WO1999056258A1 Intrinsically-safe roof hazard alert module
11/04/1999CA2329313A1 Intrinsically-safe roof hazard alert module
11/03/1999EP0954080A1 Device for detecting the current level for ac overcurrent protection
11/03/1999EP0953222A1 System for preventing undesired protective relay tripping actions due to coupling capacitor voltage transformer transients
11/03/1999CN2347296Y Microcomputerized digital intelligent leakage protector
11/03/1999CN2347295Y Electricity saving protector of a. c. contactor
11/03/1999CN2347294Y Large current a. c. mains arrester
11/03/1999CN2347293Y Loss of phase breaker
11/03/1999CN2347292Y Multifunctional power load switch
11/03/1999CN2347180Y Phase failure electronic warner for electric motor
11/02/1999US5978198 Transient voltage surge suppressor with three-way fault indication
11/02/1999US5978192 Schmitt trigger-configured ESD protection circuit
11/02/1999US5978191 Electrical apparatus for differential protection with a test circuit
11/02/1999US5978190 Ground fault detector for gas discharge tubing
11/02/1999US5977758 Overcurrent protection circuit and overcurrent protection method of the circuit
11/02/1999US5977732 Apparatus and method for determining presence or absence of foreign object or the like caught in power-open-and-closure mechanism
10/1999
10/28/1999WO1999054978A1 Differential current protective circuit breaker
10/28/1999WO1999054977A1 Power circuit-breaker
10/28/1999WO1999054976A1 Method for adapting a protective relay to the mains frequency, and a protective relay
10/28/1999WO1999054742A1 Layout, method and current measuring device for measuring a current in a conductor
10/28/1999DE19830065C1 Operating method for microprocessor-based over-current release of circuit breaker
10/28/1999DE19819159A1 Electronic overcurrent trip for power switch
10/28/1999DE19818175A1 Data security method for securing control parameters of program-controlled computer held in EEPROM enables very large number of parameters to be stored without adversely affecting data consistency protection if fault occurs
10/28/1999DE19818055A1 Protective difference current (DI) circuit breaker with power switch for protecting electrical plant from fault currents
10/28/1999DE19818054A1 Protective switching device especially difference current (DI) protective circuit-breaker
10/28/1999DE19818022A1 Versagerschutz für ein Schutzschaltgerät Failure protection for a protective switching device
10/28/1999DE19817971A1 Error current protection circuit
10/28/1999DE19817940A1 Error signal generation method corresponding to leakage signal
10/27/1999EP0952654A2 Bus-bar protective relay apparatus
10/27/1999EP0952653A2 Failure protection for protective switching device
10/27/1999EP0951749A2 A device and a method for protecting an object against fault-related over-currents
10/27/1999EP0951747A2 Switching device including spark gap for switching electrical power
10/27/1999EP0951241A1 Ophthalmic microsurgical system employing flash eeprom and reprogrammable modules
10/27/1999CN2346104Y Intelligence self-adaptive earth leakage protective device
10/27/1999CN2346103Y Microcomputer phase demodulating amplitude discriminating earth leakage protective device for microcomputer
10/27/1999CN2346102Y Multifunction electric relay
10/27/1999CN2346101Y Fibre-optical type high-voltage overcurrent protective device
10/27/1999CN2346100Y Overcurrent and overvoltage double-alarm self-reset safety sub-unit used for telephone exchange centre
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