| 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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| 05/22/2013 | CN101902034B Short-circuit protection device for switching device |
| 05/22/2013 | CA2794880A1 Method for operating a converter and a switching cell and a converter |
| 05/21/2013 | US8446745 Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance |
| 05/21/2013 | US8446702 Circuit breaker |
| 05/21/2013 | US8444394 Pump controller system and method |
| 05/16/2013 | WO2013068046A1 Using the transfer switch of a hybrid circuit breaker as selector switch |
| 05/16/2013 | WO2013067957A1 An output over-voltage protection circuit for power factor correction |
| 05/16/2013 | US20130121044 Power Converter Controller IC Having Pins with Multiple Functions |
| 05/16/2013 | US20130120881 Systems and methods for protecting three-phase motors |
| 05/16/2013 | US20130120880 Electrostatic discharge protection circuit and electronic device |
| 05/16/2013 | US20130119913 Integrated drive motor power interface |
| 05/16/2013 | US20130119903 Ac pre-charge circuit |
| 05/16/2013 | DE102012219717A1 Method for protecting output stage of electric motor from overcurrent, for actuating clutch of dual clutch transmission in motor car, involves switching-off output stage when actual current value exceeds predetermined threshold value |
| 05/16/2013 | DE102011086060A1 Verfahren zur sicherheitsbedingten Abschaltung eines elektrischen Netzes und Sicherheitseinrichtung A method for safety-related shutdown of an electrical network and security device |
| 05/16/2013 | DE102011055223B3 Unmittelbare Kontaktierung eines Energiespeichers oder einer Last mittels eines elektronischen Lastschalters Direct contact with an energy store or a load by means of an electronic circuit breaker |
| 05/15/2013 | EP2592711A1 Charging control device |
| 05/15/2013 | EP2591373A1 Fast distance protection for energy supply networks |
| 05/15/2013 | CN202940759U 台钻控制电路 The control circuit bench |
| 05/15/2013 | CN202940735U Power amplifier used for intelligent transformer substation test system |
| 05/15/2013 | CN202940734U Switching power supply |
| 05/15/2013 | CN202940578U Current detection circuit for breaker trip |
| 05/15/2013 | CN202940577U Safe automatic control system for islanding detection of distributed energy |
| 05/15/2013 | CN202940576U Current overload protection device for circuit breakers |
| 05/15/2013 | CN202940575U Digital line protection device |
| 05/15/2013 | CN202940574U New type undervoltage protection circuit in motor driving chip |
| 05/15/2013 | CN202940573U Special protector for electric bicycle battery |
| 05/15/2013 | CN202940572U Protection and state indication apparatus for DC electric degasser |
| 05/15/2013 | CN202940571U Microcomputer intelligent low-tension motor protector |
| 05/15/2013 | CN202940570U Grounding protection controller for 10kV capacitor reactive compensation device |
| 05/15/2013 | CN202940569U Transformer protection device using high-power reinitiated relay |
| 05/15/2013 | CN202940561U Dedicated explosion-proof power supply device for field operation |
| 05/15/2013 | CN202940121U Lightning-proof device for high-voltage combined transformer |
| 05/15/2013 | CN202940113U Transformer adopting temperature fuse |
| 05/15/2013 | CN103107769A Power conversion device and over-current protection circuit |
| 05/15/2013 | CN103107715A Alternating current (AC)-direct current (DC) power module |
| 05/15/2013 | CN103107708A Resonant converting circuit and resonant controller |
| 05/15/2013 | CN103107707A Resonant converting circuit and resonant controller |
| 05/15/2013 | CN103107703A Inverter type high-voltage power supply |
| 05/15/2013 | CN103107524A Electric transmission line phase fault relay protection method |
| 05/15/2013 | CN103107523A Relay protection method of blocking filter mistermination failure |
| 05/15/2013 | CN103107522A Breaker matching method for restraining self-excitation of electrical power system |
| 05/15/2013 | CN103107521A Multi-string lithium battery set protective board |
| 05/15/2013 | CN103107520A System and method for lithium ion battery over-temperature protection |
| 05/15/2013 | CN103107519A Relay protection device of large-scale rectifier unit |
| 05/15/2013 | CN103107518A Photovoltaic inverter and protector thereof |
| 05/15/2013 | CN103107517A Overload protection method and overload protection system for direct-current (DC) motor |
| 05/15/2013 | CN103107516A Method for avoiding producing short circuit current |
| 05/15/2013 | CN102364796B Voltage and phase sequence protection circuit |
| 05/15/2013 | CN102005740B Extra-high voltage direct current line boundary element method adopting polar wave wavelet energy ratio |
| 05/14/2013 | US8441820 DC-link voltage balancing system and method for multilevel converters |
| 05/14/2013 | US8441819 Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance |
| 05/14/2013 | US8441768 Systems and methods for independent self-monitoring |
| 05/10/2013 | WO2013067123A1 Power management system that includes a generator controller |
| 05/10/2013 | WO2013064666A1 Photovoltaic panel safety device |
| 05/10/2013 | WO2013064623A1 Battery system |
| 05/10/2013 | WO2013064176A1 Travelling-wave based fault protection of high-voltage transmission lines |
| 05/09/2013 | US20130114314 Converter system and power electronic system comprising such converter systems |
| 05/09/2013 | US20130114166 Inverter for an electric machine and method for operating an inverter for an electric machine |
| 05/08/2013 | EP2590288A2 Switching mode power supply including surge protection circuit and image forming apparatus including the same |
| 05/08/2013 | EP2589129A2 Wind turbine |
| 05/08/2013 | EP2589123A1 An hvdc switchyard and an hvdc switchyard system |
| 05/08/2013 | EP1408594B1 DC ground fault detector and system-interconnected generation device using the DC ground fault detector |
| 05/08/2013 | DE10122853B4 Motor-Steuereinheit mit einer automatischen Erkennung einer dauerhaften einphasigen Verdrahtung Engine control unit with an automatic detection of a single-phase permanent wiring |
| 05/08/2013 | CN202931190U Wide-range DC input circuit |
| 05/08/2013 | CN202931119U Motor with function of burning prevention |
| 05/08/2013 | CN202930993U Separated solar-powered mobile power supply |
| 05/08/2013 | CN202930990U Solar mobile power supply having protection function |
| 05/08/2013 | CN202930978U 30W portable solar power supply |
| 05/08/2013 | CN202930957U Three-phase unbalance current adjusting and reactive compensation monitoring system |
| 05/08/2013 | CN202930927U Protective relaying device |
| 05/08/2013 | CN202930926U Switch coil protector |
| 05/08/2013 | CN202930925U Integrated circuit of improved voltage endurance |
| 05/08/2013 | CN202930924U Electric bicycle lead-acid storage battery charging thermorunaway protector |
| 05/08/2013 | CN202930923U Protection circuit for battery polarity reversing |
| 05/08/2013 | CN202930922U Lithium battery protective circuit |
| 05/08/2013 | CN202930921U Battery protection circuit and charging power switch control signal generation circuit thereof |
| 05/08/2013 | CN202930920U UPS battery low-voltage discharge protection circuit capable of setting return difference |
| 05/08/2013 | CN202930919U Charging overcurrent protection circuit |
| 05/08/2013 | CN202930918U Charging protection circuit capable of jointly controlling P channel MOS tube |
| 05/08/2013 | CN202930917U IGBT overcurrent protection system for EPS power supply |
| 05/08/2013 | CN202930916U Switch power supply protection circuit |
| 05/08/2013 | CN202930915U Short circuit protection device of frequency converter switch power supply |
| 05/08/2013 | CN202930914U Machine tool motor overtemperature protection circuit for teaching |
| 05/08/2013 | CN202930913U Low-voltage motor voltage shock prevention protection integrated controller |
| 05/08/2013 | CN202930912U Split type low voltage motor controller |
| 05/08/2013 | CN202930911U Large current centralized leakage protection device |
| 05/08/2013 | CN202930910U Multifunctional protection module used for active power filter |
| 05/08/2013 | CN202930790U Intelligent power-saving cabinet of pumping unit |
| 05/08/2013 | CN202930748U Switch cabinet |
| 05/08/2013 | CN202930390U MOS (Metal Oxide Semiconductor) tube and battery protective circuit using MOS tube |
| 05/08/2013 | CN103098328A Systems and methods for protecting three-phase motors |
| 05/08/2013 | CN103095210A Three-phase motor integrated controller |
| 05/08/2013 | CN103094972A Same-level overflow energy feedback protection board |
| 05/08/2013 | CN103094942A Constant voltage current-limiting charging circuit and lamp |
| 05/08/2013 | CN103094932A Power supply system and power protection circuit thereof |
| 05/08/2013 | CN103094931A Power supply system and power protection circuit thereof |
| 05/08/2013 | CN103094914A Controller based on TMS320F2812 power distribution synchronous compensator |
| 05/08/2013 | CN103094899A Real time multicircuit control power saving device |
| 05/08/2013 | CN103094889A Circuit single-phase earth fault impedance distance protection method based on additional impedance actual measurement correction |
| 05/08/2013 | CN103094888A Matching method of complex distribution network over-current protection timing sequence based on novel directional element |