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)
09/2012
09/26/2012CN202455029U Short-circuit protecting device of low-noise block downconverter of satellite television
09/26/2012CN202455028U Safe parallel connection device of high-power MOSFETs (metal-oxide semiconductor field-effect transistors
09/26/2012CN202455027U Adaptive circuit of electrical power system monitoring and controlling device
09/26/2012CN202455026U Grounding fault protective device for explosion-proof high-voltage converter of coal mine
09/26/2012CN202454499U Multipurpose automatic timer
09/26/2012CN202453405U Alternating current detection circuit and automatic power-off circuit with power-off zero power consumption
09/26/2012CN102696163A Redundant module with symmetrical current paths
09/26/2012CN102696161A Fuzzy interference relay and method for current differential protection of a transmission line
09/26/2012CN102694415A Vehicle multimedia power supply control system
09/26/2012CN102694367A Wiring cable used for solar cell module
09/26/2012CN102694365A Triple modular redundancy emergency trip protection system of steam turbine
09/26/2012CN102694364A Ground fault circuit interrupter (gfci) monitor and ground fault simulation method
09/26/2012CN102694363A Power electronic circuit breaker device
09/26/2012CN102694362A Over-current protection circuit and main board
09/26/2012CN101976880B Intelligent device for voltage dip protection
09/26/2012CN101882774B DC de-icing device without special rectifier transformer and protection method thereof
09/26/2012CN101877470B Direct current thawing apparatus with special rectiformer and protection method thereof
09/26/2012CN101771219B Grouping remote control power socket device and grouping remote control method thereof
09/26/2012CN101707165B Built-in A type intelligent circuit breaker with automatic closing function
09/26/2012CN101589528B Residual current device
09/26/2012CN101546901B Circuit protection device for building automation system
09/25/2012US8274773 Multilayered board semiconductor device with BGA package
09/25/2012US8274772 Current detection and limiting method and apparatus
09/25/2012US8274394 Faulted circuit indicator with end-of-life display and discharge
09/25/2012US8274294 Method and device for capturing a fault in an electrical supply grid
09/25/2012CA2422948C Electrical ground isolation and secondary failure reduction detection and isolation
09/20/2012WO2012123541A1 Electrical apparatus for the short-circuit protection of a three-phase load in a three-phase system
09/20/2012WO2012122711A1 Voltage based method for fault identification in a transmission line and apparatus thereof
09/20/2012US20120236456 Transistor circuit with protecting function
09/20/2012US20120236454 Overcurrent protection circuit and motherboard having same
09/20/2012US20120236453 Transmitter/receiver circuit for protection circuit
09/20/2012US20120236452 Protection relay
09/20/2012US20120236451 Electricity storage system and control device
09/20/2012US20120236440 Superconducting Fault Current Limiter System
09/20/2012DE102011121850A1 Electronic circuit breaker i.e. electronic fuse, for traction battery of e.g. electric vehicle, has holding circuit retaining switching state after interruption of circuit and controlling switch unit to compensate circuit interruption
09/20/2012DE102011007042A1 Protective circuit for switching off charging current in electric vehicle charging station, disconnects charging current load signal line in response to signal generated by program executed in control unit, and switching unit status signal
09/20/2012DE102011001340A1 Elektrische Vorrichtung für den Kurzschlussschutz einer Drehstromlast in einem Drehstromsystem An electrical device for short-circuit protection of a three-phase load in a three-phase system
09/19/2012EP2501008A1 Protection relay
09/19/2012CN202444559U Video optical transceiver
09/19/2012CN202444303U Full automatic stop charger
09/19/2012CN202444247U Electric steering engine output current transient state protecting circuit
09/19/2012CN202444242U Overcurrent protection circuit of electric automobile electric driven controller
09/19/2012CN202444240U Supply voltage bi-directional off-limit alarm protection device for on-line coating machine
09/19/2012CN202444239U Overcurrent silicon controlled rectifier (SCR) protection circuit
09/19/2012CN202444238U Low residual voltage modularization power supply lightening prevention device
09/19/2012CN202444237U Short-circuit self-resetting module
09/19/2012CN102687358A Power supply circuit and electric appliance
09/19/2012CN102685969A LED (Light-Emitting Diode) drive circuit and short-circuit protection circuit
09/19/2012CN102685960A LED (Light-Emitting Diode) street lamp device additionally provided with lightning arrester
09/19/2012CN102684291A Control device of intelligent three-phase duel power supply conversion switch
09/19/2012CN102684172A Bus differential protection method for realizing sectional dead zone protection based on virtual bus
09/19/2012CN102684171A Tripping and alarming system for high-voltage switch cabinet
09/19/2012CN102684169A Differential protection signal synchronizing method for distribution network system
09/19/2012CN102684168A Low-voltage vacuum feed switch electricity jump alarm device and underground substation power supply system
09/19/2012CN102684166A Transistor circuit with protecting function
09/19/2012CN102684150A Pressure pre-warning and delay protection device
09/19/2012CN102684149A Gas leakage and wire accidental-fire alarm power-off device
09/19/2012CN102684148A Leakage protection device with extended function
09/19/2012CN102684147A Outdoor zero sequence protective net and protection method
09/19/2012CN102684146A Zero-lacking alarm protective circuit of three-phase voltage stabilizer
09/19/2012CN102684145A Sampling data exception detecting method and relay protection method based on redundant CT windings
09/19/2012CN102684144A Low electric safety device
09/19/2012CN102684143A Over-voltage or under-voltage protective module for DC power supply
09/19/2012CN102684142A Integrated overdrive and overvoltage protection device
09/19/2012CN102684141A Shock current identifying method and aftercurrent protecting device
09/19/2012CN102684140A Controlling a current between a source and a load
09/19/2012CN102684139A Circuit breaker trip unit
09/19/2012CN102684138A Method and device for detecting and processing firing phenomenon of power line
09/19/2012CN102684137A System and method for safely powering on/off high-voltage circuits
09/19/2012CN102684136A Zero-adverse-current predicting method for photovoltaic microgrid common-grid application system
09/19/2012CN102680846A Methods for judging and protecting reliability of connection among battery units, and protection device
09/19/2012CN101860008B Electric-connection thermal tripping operating display device, electronic device and large-discharge surge protector
09/19/2012CN101762773B Detection method and detection device for ground protection of high-voltage equipment
09/19/2012CN101617452B MOS transistor triggered transient voltage suppressor to provide circuit protection at a lower voltage
09/19/2012CN101572364B Novel earth leakage protection socket
09/19/2012CN101552412B Novel electric leakage protecting socket
09/19/2012CN101483297B Electric power plug with leakage protection function
09/19/2012CN101399418B Novel leakage protection socket
09/19/2012CN101291051B Circuit breaker
09/18/2012US8271062 Superconducting structure for a fault current-limiter
09/18/2012US8270139 Adjustable arc electrode assembly and method of assembling
09/18/2012US8270136 Circuit breaker zone selective interlock for differentiated faults and method of operation
09/18/2012US8270135 Transistor half-bridge control
09/18/2012US8270134 Electrical circuit with incendive arc prevention
09/18/2012US8270133 Power supply control apparatus
09/18/2012US8270129 Device arranged for converting an AC input voltage to a DC output voltage
09/18/2012US8270128 Commutation type DC breaker
09/18/2012US8269451 Power conversion device
09/18/2012CA2630232C A control and protection system for asynchronous generators in the event of symmetrical and asymmetrical faults
09/18/2012CA2329127C Mimic high pass filter in a protective relay
09/17/2012DE202011051561U1 Vorrichtung zur Unterbrechung und/oder Begrenzung eines Gleichstroms A device for interrupting and / or limiting a direct current
09/13/2012WO2012119919A1 Current-rise limitation in high-voltage dc systems
09/13/2012WO2012012517A3 Sensing and control electronics for a power grid protection system
09/13/2012US20120229946 Protection relay
09/13/2012US20120229945 Charge/discharge control circuit and battery assembly
09/13/2012US20120229944 Safe disconnect switch
09/13/2012US20120229943 Device for detecting a fault in an ac supply
09/13/2012US20120229939 Methods, systems, and apparatus and for detecting parallel electrical arc faults
09/13/2012US20120229938 Safety relay and safety-related communication system
09/13/2012US20120229047 Backlight module, over-temperature protection circuit and over-temperature protection method thereof
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