| 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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| 06/23/2010 | CN201515211U Electrified railway main-changing and main-protection device suitable for passenger transport private wires |
| 06/23/2010 | CN201515210U DC power recording and overcurrent protecting device of electric locomotive |
| 06/23/2010 | CN1983756B System and method to avoid device stressing |
| 06/23/2010 | CN1973415B Load driving circuit abnormality monitoring device and method |
| 06/23/2010 | CN1913274B Protection system and protection method for an electrical power generator |
| 06/23/2010 | CN1710814B Apparatus and method for monitoring input voltage |
| 06/23/2010 | CN101755373A Protective device and method for operating a protective device |
| 06/23/2010 | CN101755372A Method and protection device for a power network accounting for route switching in a telecommunication network |
| 06/23/2010 | CN101755371A Charge monitoring device |
| 06/23/2010 | CN101753005A Protective device and method of power source convertor |
| 06/23/2010 | CN101752906A High-voltage switch intelligent control system and control method thereof |
| 06/23/2010 | CN101752901A Method, system, equipment and device for synchronizing data sampling at different places |
| 06/23/2010 | CN101752897A Automatic comprehensive spare switch device based on automatic dispatching platform |
| 06/23/2010 | CN101752873A Protection method of DC electricity transmission high-voltage convertor station |
| 06/23/2010 | CN101752872A Anti-disaster reactive power compensation device |
| 06/23/2010 | CN101752856A Electric surge protector |
| 06/23/2010 | CN101752848A Blocking judging method for excess voltage protection of extra-high voltage line |
| 06/23/2010 | CN101752847A Double circuit-line all-line quick-action channel-less protection method based on single-end electrical quantity |
| 06/23/2010 | CN101752846A Arc short-circuit protection device and control method |
| 06/23/2010 | CN101752845A Voltage and current surge protection method for electromagnetic oven and circuit thereof |
| 06/23/2010 | CN101752844A Device, system and method for protection of battery |
| 06/23/2010 | CN101752843A Battery protection system of electronic device and method thereof |
| 06/23/2010 | CN101752842A Method and arrangement for monitoring connections of switch intended for activating safety function |
| 06/23/2010 | CN101752841A Insulated gate bipolar transistor (IGBT) protection circuit and motor control system |
| 06/23/2010 | CN101752840A Numerical control power supply overvoltage protection circuit |
| 06/23/2010 | CN101752839A Method for improving valve short circuit protection and setting performance of current converter |
| 06/23/2010 | CN101752838A Phase-failure protection control circuit of novel pressure machine |
| 06/23/2010 | CN101752837A Motor phase failure protection device controlled by symbol contact button |
| 06/23/2010 | CN101752836A Low-voltage motor protection method and device thereof |
| 06/23/2010 | CN101752835A Transformer compound current differential protection method and compound current differential relay |
| 06/23/2010 | CN101752834A UUT power supply management method and ID identification circuit thereof |
| 06/23/2010 | CN101752830A Open-phase protection contactor |
| 06/23/2010 | CN101752829A Undervoltage protection circuit and switching power supply |
| 06/23/2010 | CN101752828A Low-voltage protection device |
| 06/23/2010 | CN101751047A Shutdown temperature energy-saving control and protection method of motor |
| 06/23/2010 | CN101745215A Electric roller blades |
| 06/23/2010 | CN101394078B Automatic switching device for power source electric potential |
| 06/23/2010 | CN101242098B Thunder failure recognition method for row wave protection of DC power transmission line |
| 06/23/2010 | CN101201379B Method for faulty indication and subsection of power system low current grounding |
| 06/23/2010 | CN101047321B Lithium battery pack and electric tool |
| 06/22/2010 | US7742267 Circuit arrangement and method for detecting the state of a circuit protection element |
| 06/22/2010 | US7741800 Control apparatus and method for controlling an adjusting device in a motor vehicle |
| 06/17/2010 | WO2010067417A1 Vehicle power supply system |
| 06/17/2010 | WO2010067104A1 Overload protection of a voltage reduction device |
| 06/17/2010 | WO2010066476A1 Substation automation wiht redundant protection |
| 06/17/2010 | WO2010066279A1 Method and safety device for monitoring a bus bar of an electrical energy supply grid |
| 06/17/2010 | US20100152914 Remotely controllable wireless energy control unit |
| 06/17/2010 | US20100149699 Motor detecting and protecting apparatus and its method |
| 06/17/2010 | US20100149698 Thermal protector for electric motors, in particular for compressor motors |
| 06/17/2010 | US20100148797 Esd detection circuit and related method thereof |
| 06/17/2010 | US20100146704 Fail-Proof Control For Hospital Beds |
| 06/17/2010 | DE202009000907U1 Antriebsanordnung zur motorischen Verstellung eines Verstellelements eines Kraftfahrzeugs Drive assembly for motor adjustment of an adjustment of a motor vehicle |
| 06/17/2010 | DE102009053712A1 Batteriesystem mit Relais Battery system with relay |
| 06/17/2010 | DE102009053398A1 Verpolschutz Reverse polarity protection |
| 06/17/2010 | DE102009045820A1 Spannungsseitiger Treiber mit Erdschlussschutz Voltage-side driver with ground fault protection |
| 06/17/2010 | DE102008059670B3 Vakuumschalter mit beidseitig fest verschienten Anschlussklemmen Vacuum switch with double-sided moving of the mounted terminals |
| 06/17/2010 | DE102008029491B4 Schutzvorrichtung für eine Solaranlage und Solaranlage Protection device for a solar system and solar system |
| 06/17/2010 | DE102005014167B4 Treiberschutzschaltung Driver protection circuit |
| 06/17/2010 | CA2744397A1 Overload protection of a voltage reduction device |
| 06/16/2010 | CN201509072U Protection device capable of preventing vacuum circuit breaker from producing cut-off overvoltage and arc restriking overvoltage |
| 06/16/2010 | CN201509071U Protective device for high-voltage DC converter valve |
| 06/16/2010 | CN201509070U Cable-fixed power-free micro-protector for motor |
| 06/16/2010 | CN201509069U WK-4 type excavator electromotor excitation control circuit device |
| 06/16/2010 | CN201509068U High-sensitivity motor protection device |
| 06/16/2010 | CN201509067U Winding motor synchronization brushless excitation startup and de-excitation device |
| 06/16/2010 | CN201509066U Power generating set circuit with electric power monitoring system |
| 06/16/2010 | CN201509065U Generator unit control circuit with protection circuit |
| 06/16/2010 | CN201508759U Bushing tap grounding device of generator transformer |
| 06/16/2010 | CN201506269U Electric vehicle motor control circuit with dual protection function |
| 06/16/2010 | CN101741294A Motor protector dual-machine linkage method and linkage device |
| 06/16/2010 | CN101741251A DC voltage converter for automobile |
| 06/16/2010 | CN101741115A Power supply system, power supply-side control unit, and electric vehicle incorporating said system |
| 06/16/2010 | CN101741072A Method for fault component-based wide area backup protection |
| 06/16/2010 | CN101741071A Complete method for negative sequence directional pilot protection of ultra-high voltage transmission line |
| 06/16/2010 | CN101741070A Method for pilot protection of circuit based on current capacity and voltage capacity at two ends |
| 06/16/2010 | CN101741069A Shutting method for preventing impedance relay from false operation owing to 'in-phase problem' |
| 06/16/2010 | CN101741068A Synchronous sampling method for optical fiber longitudinal differential protection between digital transformer station and traditional transformer station |
| 06/16/2010 | CN101741067A Overheating protection device and method of electronic device |
| 06/16/2010 | CN101741066A Main circuit structure for permanent magnet synchronous motor control system |
| 06/16/2010 | CN101741065A Controller unit with integrated temperature sensor |
| 06/16/2010 | CN101741064A Electronic protector of motor |
| 06/16/2010 | CN101741063A Redundancy sampling calculation-based superposed square-wave voltage type rotor earth-fault protection method |
| 06/16/2010 | CN101741062A Inter-turn protection method for power generator |
| 06/16/2010 | CN101741061A Distribution transformer medium voltage low voltage integration protection method |
| 06/16/2010 | CN101741056A Power protection device for three-phase electric appliance in operation |
| 06/16/2010 | CN101741051A Closing protective relay |
| 06/16/2010 | CN101737170A Aeroengine generating system |
| 06/16/2010 | CN101409462B Multilevel monitor-control method for monitoring and controlling hyposynchronous oscillation of synthesis power generating plant and electric network information |
| 06/16/2010 | CN101257209B Islet operation detecting method of photovoltaic parallel network generating system |
| 06/16/2010 | CN101233660B Fault management of HTS power cable |
| 06/16/2010 | CN101207272B Turn space protection for reactor sequence component direction |
| 06/16/2010 | CN101194403B Method for avoiding undesired, measurement error-induced protective tripping within a protection system of HVDC transmission system |
| 06/16/2010 | CN101162851B Controller of low pressure intelligent type circuit breakers with mutual verifying function |
| 06/16/2010 | CN101145686B Power tool |
| 06/16/2010 | CN101119022B Rectifier transformer group transverse bracing differential current protection method and apparatus |
| 06/15/2010 | US7738231 Overvoltage protection device with simplified display system and corresponding production method |
| 06/15/2010 | US7738227 Control system and method with constant maximum current for power converter protection |
| 06/15/2010 | US7738221 Transformer inrush current detector |
| 06/15/2010 | CA2485598C Barrier movement control for mid-travel barrier movement start |
| 06/10/2010 | WO2010063490A1 Device for monitoring thyristors |