Patents for H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions (32,726) |
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11/13/2012 | CA2566020C Central vacuum cleaning system control subsystems |
11/08/2012 | WO2012150893A1 Method and equipment to treat a fluid channel prior to a relining procedure and an exchangeable tool having a coupling mechanism to be used in connection thereto |
11/08/2012 | US20120281444 Solar energy conversion and utilization system |
11/08/2012 | US20120281443 Inverter device comprising a topology surveying a series of capacitors |
11/08/2012 | US20120281327 Self-adaptive surge-proof circuit |
11/08/2012 | US20120281321 Disconnector for distribution transformers with dielectric liquid |
11/08/2012 | US20120280644 Inverter and a method for controlling an electric machine |
11/08/2012 | DE102011075353A1 Fault monitoring system for feed point powered distribution station of electrical power supply network, has control device to determine whether error before input side, between input and output sides or behind output side is present |
11/07/2012 | EP2521156A1 Disconnector for distribution tarnsformers with dielectric liquid |
11/07/2012 | EP2519957A1 System for monitoring oil level and detecting leaks in power transformers, reactors, current and potential transformers, high voltage bushings and similar. |
11/07/2012 | CN202524673U Protection type shell body of motor protector |
11/07/2012 | CN202524306U Communication power supply module with a plurality of protection functions |
11/07/2012 | CN202524146U High-efficiency energy-saving charger |
11/07/2012 | CN202524135U Solar charging circuit |
11/07/2012 | CN202524130U High-precision charging power supply |
11/07/2012 | CN202524103U Bothway constant flow source charge-discharge device for storage battery |
11/07/2012 | CN202524072U Cascading protection circuit of battery monomers |
11/07/2012 | CN202524071U Battery pack protection and monitoring device of battery exchange system |
11/07/2012 | CN202524070U Protective circuit for preventing reverse connection of accumulator |
11/07/2012 | CN202524069U Reverse-polarity protection circuit |
11/07/2012 | CN202524068U Vehicle inverter-to-ground short circuit protection device |
11/07/2012 | CN202524067U Input over-voltage and under-voltage protection device of communication power supply module |
11/07/2012 | CN202524066U Motor default phase protection device |
11/07/2012 | CN202524065U Three-phase motor protection switch against phase loss and overcurrent |
11/07/2012 | CN202524064U Relay protection system for power plant |
11/07/2012 | CN202524063U 330kV-500kV transformer neutral point complete equipment |
11/07/2012 | CN202524062U Overcurrent protection device for power factor correction |
11/07/2012 | CN102771036A Electric motor for driving a motor vehicle component |
11/07/2012 | CN102769315A Pre-charging control device for motor controller of electric vehicle and electric vehicle using pre-charging control device |
11/07/2012 | CN102769280A Tree-shaped power supply mode override trip prevention system |
11/07/2012 | CN102769279A High-resistance grounding phase selection method for longitudinal zero-sequence protection of line protection device |
11/07/2012 | CN102769278A Layering protective system |
11/07/2012 | CN102769277A Improved structure of safety protection device of low-voltage distribution cabinet |
11/07/2012 | CN102769276A Implementing method of protecting IEGT (injection enhanced gate transistor) based on relay protection tripping signal |
11/07/2012 | CN102769275A Over-discharge protection circuit for rechargeable battery |
11/07/2012 | CN102769274A Battery management system |
11/07/2012 | CN102769273A Switch power source output overcurrent protection device |
11/07/2012 | CN102769272A Failure latching and resetting system of power converter and power converter |
11/07/2012 | CN102769271A Output protection circuit for alternating-current power supply |
11/07/2012 | CN102769270A Direct current (DC)-DC boosting power supply output circuit |
11/07/2012 | CN102769269A Electric locomotive main transformer overheat protection control method |
11/07/2012 | CN102769268A Distribution transformer protection device |
11/07/2012 | CN102364869B Wide-voltage constant-power motor speed stabilization thermostat |
11/07/2012 | CN102104252B Power system dynamic equivalence method suitable for electromagnetic transient analysis |
11/07/2012 | CN101908851B Miniaturized crane safety starter |
11/07/2012 | CN101895212B Method for supplying power to control circuit of power control device |
11/07/2012 | CN101872978B Power supply device for ultrahigh-power silicon carbide smelting furnace and silicon carbide smelting device |
11/07/2012 | CN101860015B Phase failure protector of electric motor |
11/07/2012 | CN101834457B Lithium battery management system |
11/07/2012 | CN101764555B Servo system and safety control device |
11/07/2012 | CN101682094B Power storage unit and vehicle having power storage unit |
11/06/2012 | US8305783 Systems and methods for polyphase alternating current transformer inrush current limiting |
11/06/2012 | US8305782 Redundant current valve control in a high voltage power transmission system |
11/06/2012 | US8305048 Vehicle power generating device and an alternator control method |
11/06/2012 | US8305024 Motor starting and switching |
11/06/2012 | US8305020 Electric power conversion device, compressor motor with the device, and air conditioner with the motor |
11/06/2012 | US8304806 ESD and EMC optimized HV-MOS transistor |
11/01/2012 | WO2012148992A1 Synchronous rectifier control techniques for a resonant converter |
11/01/2012 | WO2012100564A3 Self-adaptive lightning-proof anti-surge control circuit |
11/01/2012 | US20120275069 Electric machine assembly with fail-safe arrangement |
11/01/2012 | US20120275068 Fault tolerant electrical machine |
11/01/2012 | US20120275066 Grounding system for photovoltaic arrays |
11/01/2012 | US20120274256 Cooled motor |
11/01/2012 | US20120274219 Programmable Landscape Lighting Controller with Self-Diagnostic Capabilities and Fail Safe Features |
10/31/2012 | EP2517351A1 Disconnection from mains using switches for power tools |
10/31/2012 | EP2517347A2 Reconfigurable inverter having failure tolerance for powering a synchronous poly-phase motor having permanent magnets, and assembly including said inverter and motor |
10/31/2012 | EP2517342A2 Over voltage protection of a switching converter |
10/31/2012 | EP2516218A1 Wiper controller |
10/31/2012 | DE112010003366T5 Energieversorgungssteuerung Power supply controller |
10/31/2012 | DE102011018972A1 Solar module protection device for solar energy plant that is attached at roof of building, has triggering device for activating switching unit depending on signal such that interconnection between input and output is disconnected |
10/31/2012 | CN202513868U Voltage regulator of generator of automobile |
10/31/2012 | CN202513861U Contactor-based centralized controller for irrigation and drainage pumping station |
10/31/2012 | CN202513856U Warping machine automatic control energy-saving device |
10/31/2012 | CN202513855U Dual insurance starter of three-phase asynchronous motor |
10/31/2012 | CN202513839U Self-diagnosis direct current power supply |
10/31/2012 | CN202513760U Motor with thermal protector |
10/31/2012 | CN202513624U Electric automobile charging device with battery detecting function |
10/31/2012 | CN202513584U Combined energy feedback type power-saving device of multiple control lift |
10/31/2012 | CN202513569U Transformer neutral point overvoltage protector |
10/31/2012 | CN202513564U Single-ended transient voltage protection device of ultra-high voltage direct current (DC) transmission line |
10/31/2012 | CN202513561U Arc light protection system of high-voltage switch cabinet |
10/31/2012 | CN202513560U Television, television power supply and television metal oxide semiconductor (MOS) tube short-circuit protection circuit |
10/31/2012 | CN202513559U Battery short-circuit protection circuit |
10/31/2012 | CN202513558U Solar battery hot spot protection circuit |
10/31/2012 | CN202513557U Safety protecting system for energy storing device |
10/31/2012 | CN202513556U Charging time control protector |
10/31/2012 | CN202513555U DSP (Digital Signal Processor) digital control photovoltaic power generation inverter |
10/31/2012 | CN202513554U Short-circuit protection apparatus of wind energy converter |
10/31/2012 | CN202513553U Phase-failure and overload protector of machine tool |
10/31/2012 | CN202513552U Voltage protector based on transistors |
10/31/2012 | CN202513551U Open-phase automatic delay protector based on unijunction transistor |
10/31/2012 | CN202513550U Irrigation and drainage motor automatic protector |
10/31/2012 | CN102763303A Battery protection circuit and method for energy harvester circuit |
10/31/2012 | CN102763297A Method of monitoring the grading margin between time-current characteristics of intelligent electronic devices |
10/31/2012 | CN102762406A 功率转换装置 Power conversion means |
10/31/2012 | CN102762010A Induction type illumination device for illuminating during power failure |
10/31/2012 | CN102761302A Direct current motor controller for lifting hydraulic pump of electric forklift |
10/31/2012 | CN102761287A Digital power module |
10/31/2012 | CN102761248A Power conversion circuit and conversion controller |
10/31/2012 | CN102761161A Mobile power supply |