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)
06/2008
06/11/2008CN201072735Y Shunt release capable of detecting working condition of breaker
06/11/2008CN101197480A Plug
06/10/2008US7386686 Inlining with stack trace cache-based dynamic profiling
06/10/2008US7385833 Snubber circuit for a power converter
06/10/2008US7385797 Power problem diagnosis
06/10/2008US7385795 Cordless power tool with a protected weak link element
06/10/2008US7385793 Cascode active shunt gate oxide project during electrostatic discharge event
06/10/2008US7385791 Apparatus and method for relay contact arc suppression
06/10/2008US7385518 Compact fused disconnect switch
06/10/2008US7385473 One-shot heat sensing electrical receptacle
06/05/2008WO2008064946A1 A method and an apparatus for predicting the future behavior of currents in current paths
06/05/2008WO2008064914A2 Calibrating a powered actuator
06/05/2008US20080130187 Electrostatic shield and method of fabricating the same
06/05/2008US20080130182 Power system fault characterization using transformed values
06/05/2008US20080130181 Electric circuit with protection against overvoltages
06/05/2008US20080130179 Method And Device For Fault Detection In Transformers Or Power Lines
06/05/2008US20080130177 Circuit for clamping current in a charge pump
06/05/2008US20080129523 Portable overvoltage sensor for sensing overvoltage of an electrical device during manufacturing
06/05/2008DE102006055867A1 Integrierte Schaltung mit Strahlungsschutz Integrated circuit with radiation protection
06/05/2008DE102004008026B4 Transformatoren-Schutzrelais Transformer protection relay
06/04/2008EP1928068A1 System and method of detecting electrical faults in electrothermal valves
06/04/2008EP1928007A1 A method and apparatus for predicting the future behavior of current paths
06/04/2008EP1573539A4 Resource allocation aware queuing of requests for media resources
06/04/2008CN201069855Y An energy-saving electricity-prevention socket for intelligent drinking machine
06/04/2008CN201069854Y Current-prevention device for electric water heater with time division detection function
06/04/2008CN201069853Y Current-prevention device for electric water heater with time division detection function
06/04/2008CN201069852Y A computer protection device
06/04/2008CN101194403A Method for avoiding undesired, measurement error-induced protective tripping within a protection system of HVDC transmission system
06/04/2008CN101192751A Intelligent home electrical appliance and automatic power reclosing protection breaker
06/04/2008CN101192747A No contact long life soft start energy-saving distribution box
06/04/2008CN101192746A Neutral line disconnection protector
06/04/2008CN101192731A Secure leakage protection jack with life termination detection function
06/04/2008CN100392932C Method and device for overvoltage protection in dual-voltage vehicle electrical systems
06/04/2008CN100392931C Method and filter for filtering electrical signal representing electric power system parameter
06/04/2008CN100392550C Power-supply device and its control method
06/04/2008CN100392421C Switch type magnetic field sensor for current overload protector
06/04/2008CN100392410C Protective relay with synchronized phasor measurement capability for use in electric power systems
06/03/2008US7383367 Progressive extended compression mask for dynamic trace
06/03/2008US7382594 Method of forming an integrated voltage protection device and structure
06/03/2008US7382593 Method of linearizing ESD capacitance
05/2008
05/29/2008WO2008061566A1 Power failure detection circuit
05/29/2008WO2008061321A1 Power supply monitoring system
05/29/2008WO2007112695A8 A protective circuit equipment for automatically monitoring the operating fault
05/29/2008US20080126445 Method and system for reciprocal data backup
05/29/2008US20080123239 Transient voltage surge suppressor
05/29/2008US20080123237 Method and Circuit for Amplifying the Input Signals of an Electronic Overcurrent Release of Low-Voltage Circuit Breakers with a Selectable Amplification Factor
05/29/2008US20080123236 Computer apparatus with over-voltage protection function
05/29/2008US20080123235 Short circuit protection with reduced offset voltage
05/29/2008US20080123234 Switchgear control apparatus
05/29/2008US20080123233 System restart circuit and system restart method thereof
05/29/2008US20080123227 Circuit interrupter with live ground detector
05/29/2008US20080123226 Ground Fault Detector Interrupter
05/29/2008CA2670391A1 Power supply monitoring system
05/29/2008CA2669729A1 Adaptive relaying controlled by autonomous event detection
05/29/2008CA2612842A1 Method and apparatus for detection of resistive fault conditions
05/28/2008EP1925274A2 Numeric keypad simulated on touchscreen
05/28/2008EP1924862A2 Arc fault circuit interrupter system
05/28/2008CN201066791Y Building block high-voltage passive compensation device
05/28/2008CN201066782Y An automatic correction device for three-phase AC incorrect phase
05/28/2008CN201066781Y Electronic penetration protector
05/28/2008CN201066780Y A field secure power device
05/28/2008CN201066779Y A power current protection detection device
05/28/2008CN201066744Y Computer network cable lightning protector
05/28/2008CN201066743Y Novel current leakage protection jack
05/28/2008CN201066671Y Monitoring residual current action protection relay
05/28/2008CN201066660Y A permanent AC contactor control module for preventing from instantaneous voltage interruption
05/28/2008CN101188353A Implementation device and method for multi-voltage monitoring and protection
05/28/2008CN101188164A An instantaneous voltage restraint component and its making method
05/28/2008CN101187956A A device and method for realizing simulated DC feedback failure of rail traffic
05/28/2008CN101187687A High resistance earthing fault detection method based on transient traveling wave
05/28/2008CN100391073C Method for realizing digital relay protection anti-time limit characteristic
05/28/2008CN100391072C Apparatus for monitoring neutral wire and earth wire, and electric switch device containing the same
05/28/2008CN100390987C Electrostatic discharge protection circuit
05/28/2008CN100390552C Automatic tuning and small current grounding failure wire selection system of 8421 parallel reactor composite extinction coil
05/27/2008US7380198 System and method for detecting write errors in a storage device
05/27/2008US7380178 Method and apparatus of recording data in the optical recording medium
05/27/2008US7380162 Method and apparatus of recording data in the optical recording medium
05/27/2008US7380159 Method and apparatus of recording data in the optical recording medium
05/27/2008US7380054 Storage of fault and position data in nonvolatile memory on system components
05/27/2008US7379310 Over-voltage protection circuit for a switched mode power supply
05/27/2008US7379284 Switching control circuit and self-excited DC-DC converter
05/27/2008US7379283 ESD protection circuit with a low snapback voltage that is protected from fast non-ESD voltage spikes and ripples
05/27/2008US7378927 Circuit breaker with independent trip and reset lockout
05/27/2008US7378761 Control circuit and a method for electrically connecting a load to a power source
05/22/2008WO2008061035A1 Power filter
05/22/2008US20080116752 Disconnection detecting circuit
05/21/2008EP1455275B1 Data restoring apparatus using journal data and identification information
05/21/2008CN201063461Y Power-off alarm energy-accumulating circuit
05/21/2008CN201063435Y Mine high voltage intelligent switch protector
05/21/2008CN201063434Y Novel electricity-limiting device
05/21/2008CN101183901A Method of implementing transmission equipment power-off alarm and alarm recovery
05/21/2008CN101183782A Relay system in substation and pcm current differential relay system
05/21/2008CN101183781A Shunt inductance current-limiting breaker
05/21/2008CN101182956A Intelligent type omnibearing protection, auto-reclosing, multipurpose flowing water type electric water heater
05/21/2008CN100389529C Surge protector module containing voltage-dependent resistor disc
05/21/2008CN100389527C Earthing compensation process for mine low-voltage electricity grid selective leakage protection system
05/20/2008US7376079 Backup cell controller
05/20/2008US7375942 Flexible secondary overcurrent protection
05/20/2008US7375941 Protective relay capable of protection applications without protection settings
05/20/2008US7375940 Transformer interface for preventing EMI-based current imbalances from falsely triggering ground fault interrupt