| 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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| 07/04/2012 | CN102545176A Current transformer (CT) current orientation method for wide-area differential combinations |
| 07/04/2012 | CN102545175A Underground anti-override tripping system based on radio frequency network |
| 07/04/2012 | CN102545174A Distance back-up protection setting method of ultrahigh voltage circuit |
| 07/04/2012 | CN102545173A Zero-sequence backup protection setting method for ultra-high voltage transmission line |
| 07/04/2012 | CN102545172A Equipment overload successive approximation adaptive control method based on centralized real-time decisions |
| 07/04/2012 | CN102545171A Multi-winding adjustable reactor and single phase grounding fault clearing method thereof |
| 07/04/2012 | CN102545170A Microgrid busbar differential protection device |
| 07/04/2012 | CN102545169A Protective circuit for switch contact |
| 07/04/2012 | CN102545168A Method for preventing faults of 10-kilovolt middle-placed switch cabinet |
| 07/04/2012 | CN102545167A Automatic isolation device of small current earth system one-phase earth fault |
| 07/04/2012 | CN102545166A Unidirectional protection device |
| 07/04/2012 | CN102545165A Protective circuit and charging device |
| 07/04/2012 | CN102545164A Driving circuit of switch unit of reverse-connection preventing protection circuit for solar charge controller |
| 07/04/2012 | CN102545163A Battery discharge protection circuit and LED (Light Emitting Diode) lamp |
| 07/04/2012 | CN102545162A Lithium battery protection circuit |
| 07/04/2012 | CN102545161A Overcurrent protection device of variable-frequence governor |
| 07/04/2012 | CN102545160A Motor switch with automatic identification |
| 07/04/2012 | CN102545159A Open-phase short-circuit protection device for brushless DC motor |
| 07/04/2012 | CN102545158A Kt 10 alternating current cam controller |
| 07/04/2012 | CN102545157A Motor temperature measurement and overtemperature protection method of drum washing machine |
| 07/04/2012 | CN102545156A Exciting current emulation calculating method and device at time of direct-current magnetic biasing |
| 07/04/2012 | CN102545155A Active reverse connection prevention and protection circuit of solar cell |
| 07/04/2012 | CN102545154A Spare protective device with monitoring function |
| 07/04/2012 | CN102545153A Surge protector with monitoring function |
| 07/04/2012 | CN102545152A Intelligent surge protector monitoring system |
| 07/04/2012 | CN102545151A On-line monitoring system for capacitor voltage transformer |
| 07/04/2012 | CN101867307B Ozone high-voltage power supply |
| 07/04/2012 | CN101867178B Fault location method using three primary colours to represent travel waves of single-phase earth fault current of transmission line |
| 07/04/2012 | CN101860080B Distribution network metering and protection integral device suspended at high-voltage side |
| 07/04/2012 | CN101847863B Relay protection method for double-circuit transmission lines on same tower |
| 07/04/2012 | CN101834467B Intelligent shared battery pack UPS (Uninterrupted Power Supply) system and control method thereof |
| 07/04/2012 | CN101834429B Protecting system of wind power generator |
| 07/04/2012 | CN101800416B Transverse differential protection method of neutral point of electric furnace transformer |
| 07/04/2012 | CN101800415B Longitudinal differential protection method of electric furnace transformer |
| 07/04/2012 | CN101799518B Online monitoring and grounding protection methods of insulation of generator stator core tightening screw rods |
| 07/04/2012 | CN101794988B Method for detecting piconet island state |
| 07/04/2012 | CN101789582B Electric water heater protection device |
| 07/04/2012 | CN101764416B Power supply device with function of temperature compensation control |
| 07/04/2012 | CN101752845B Voltage and current surge protection method for electromagnetic oven and circuit thereof |
| 07/04/2012 | CN101741071B Complete method for negative sequence directional pilot protection of ultra-high voltage transmission line |
| 07/04/2012 | CN101719696B Centralized bus protection device and method applied to digitized transformer station |
| 07/04/2012 | CN101719660B Method for automatically resetting grounding protection device of small-current system |
| 07/04/2012 | CN101710691B Device for eliminating protection dead zone of generator motor and main transformer in pumped storage power station |
| 07/04/2012 | CN101699306B Method for monitoring current acquisition circuit of electric power secondary system |
| 07/04/2012 | CN101630832B Method for judging single-phase earth fault of controllable high-voltage shunt reactor |
| 07/04/2012 | CN101595010B Mirror adjustment mechanism, wing mirror unit and method |
| 07/04/2012 | CN101562333B Fast current protection method for distribution network containing distributed power |
| 07/04/2012 | CN101557098B Motor driving circuit |
| 07/04/2012 | CN101447659B Fault alarm device and switchboard |
| 07/04/2012 | CN101427862B Solar energy automatic remote control umbrella |
| 07/04/2012 | CN101425761B Serial parallel structure electric power transformation device |
| 07/04/2012 | CN101411032B Controller |
| 07/04/2012 | CN101399441B Protection circuit for battery pack, battery pack including the protection circuit, and method of operating the battery pack |
| 07/04/2012 | CN101295873B Medium-voltage power distribution network single-phase ground fault route selection method based on fault procedure analysis |
| 07/04/2012 | CN101202515B Electric power convertion device |
| 07/04/2012 | CN101047356B Overcurrent detection circuit for electric machine driver |
| 07/03/2012 | US8213196 Power supply circuit with protecting circuit having switch element for protecting pulse width modulation circuit |
| 07/03/2012 | US8213144 Circuit protection system |
| 07/03/2012 | US8213137 Solid state relay controller |
| 07/03/2012 | US8213136 Engine having power bus fault short circuit control with a disconnection switch |
| 07/03/2012 | US8213135 Power factor correction circuit and driving method thereof |
| 07/03/2012 | US8213133 Load breaker arrangement |
| 07/03/2012 | US8212385 Car power source apparatus for detecting a ground fault in a vehicle power supply |
| 06/28/2012 | WO2012087895A1 Capacitor balancing circuit and control method for an electronic device such as a multilevel power inverter |
| 06/28/2012 | WO2012086674A1 Power conversion apparatus |
| 06/28/2012 | WO2012086057A1 Power supply system, vehicle mounted therewith, and method of controlling power storage apparatus |
| 06/28/2012 | WO2012084109A1 Method and device for controlling an adjusting device of a motor vehicle |
| 06/28/2012 | US20120163048 Inverter, power generation system and method of operating a power generation system |
| 06/28/2012 | US20120162829 Stand-alone circuit breaker assembly and associated method of use |
| 06/28/2012 | DE10318878B4 Verfahren zur Notlaufansteuerung für Gebläse Method for Notlaufansteuerung for blower |
| 06/28/2012 | DE102011090037A1 Hochspannungswechselrichtervorrichtung und elektrischer Leckdetektor für diese High voltage inverter apparatus and electrical leakage detector for this |
| 06/28/2012 | DE102010056323A1 Method for operating induction machine for motor vehicle, involves detecting whether one of the switches connected with windings is in failure state, so as to make direct current flow through winding associated with failure switch |
| 06/28/2012 | DE102010055922A1 Monitoring apparatus for monitoring high-voltage onboard network, has evaluation unit to provide warning signal or switch off onboard network, when value of fault current flowing in onboard network exceeds preset values, respectively |
| 06/28/2012 | DE102010055550A1 Wechselrichter, Energieerzeugungsanlage und Verfahren zum Betrieb einer Energieerzeugungsanlage Inverter, power generation plant and method for operating a power plant |
| 06/28/2012 | CA2822864A1 Capacitor balancing circuit and control method for an electronic device such as a multilevel power inverter |
| 06/27/2012 | CN202285380U 基于无线控制技术的多功能电机控制系统 Based on the multi-function wireless control technology motor control system |
| 06/27/2012 | CN202285323U 数字式电机过载保护器 Digital Motor overload protection |
| 06/27/2012 | CN202285322U 一种灯管寿终保护电路 One kind of lamp end of life protection circuit |
| 06/27/2012 | CN202285321U 一种交流稳压器的输出和输入双重保护系统结构 An AC voltage regulator output and input dual protection system architecture |
| 06/27/2012 | CN1972055B Wind turbine with over-voltage protection and operation method thereof |
| 06/27/2012 | CN1684330B Methods and apparatus for protecting an MR imaging system |
| 06/27/2012 | CN102522791A Explosion-proof power supply apparatus |
| 06/27/2012 | CN102522733A HVDC power-transmission whole-line speed protection method by using direct-current filter current |
| 06/27/2012 | CN102522732A Direct-current protection system with multiple paths of optical fiber interfaces and direct-current protection method |
| 06/27/2012 | CN102522731A Intelligent reclosing controller |
| 06/27/2012 | CN102522730A Method and framework for defending security of power system with stability controlled by direct-current system |
| 06/27/2012 | CN102522729A Research on intelligent controller of low-voltage circuit breaker based on DSP (Digital Signal Processor) |
| 06/27/2012 | CN102522728A Intelligentized IGBT (Insulated Gate Bipolar Transistor) driving protection system with low power consumption and high efficiency |
| 06/27/2012 | CN102522727A PMC (PCI Mezzanine Card) drive circuit |
| 06/27/2012 | CN102522726A Method for locking magnetizing inrush current of transformer |
| 06/27/2012 | CN102520359A Battery management system and method for short circuit detection and turn-off by adopting same |
| 06/27/2012 | CN101924348B Control method for judging overload of converter transformer |
| 06/27/2012 | CN101860018B One-phase ground protection measurement and control system of high-voltage breaker |
| 06/27/2012 | CN101841164B Grid-connected system |
| 06/27/2012 | CN101762768B Method for analyzing autotransformer differential protection CT circuit connection |
| 06/27/2012 | CN101752843B Battery protection system of electronic device and method thereof |
| 06/27/2012 | CN101741251B DC voltage converter for automobile |
| 06/27/2012 | CN101673938B Output short-circuit soft-restoration control circuit and application thereof in DC-DC converter |
| 06/27/2012 | CN101630854B Uninterrupted power supply and method for detecting bypass fault of uninterrupted power supply |
| 06/27/2012 | CN101552456B Hot plug electronic device with high use safety and overheating protection device thereof |