| 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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| 09/15/2010 | CN201584757U Portable type fire pump overspeed protection circuit |
| 09/15/2010 | CN201584756U Overvoltage protective device in high-tension motor soft starter |
| 09/15/2010 | CN201584755U Current switching-on device for neutral point direct-current blocking equipment of transformer |
| 09/15/2010 | CN201584749U Pulse DC current leakage and over-voltage protection device |
| 09/15/2010 | CN201584747U Phase-failure open-circuit protector |
| 09/15/2010 | CN201583856U Fan control circuit for medium and large power switch power supplies |
| 09/15/2010 | CN101836355A Method for detecting a load drop |
| 09/15/2010 | CN101834558A Vector controller of alternating current asynchronous motor |
| 09/15/2010 | CN101834553A Control device of a no sensor alternative-current motor |
| 09/15/2010 | CN101834540A Switch power supply of electric motor saver |
| 09/15/2010 | CN101834528A Negative output fixed constant-current type electric breakdown high-voltage module power supply |
| 09/15/2010 | CN101834467A Intelligent shared battery pack UPS (Uninterrupted Power Supply) system and control method thereof |
| 09/15/2010 | CN101834465A Charging circuit and method, and integrated circuit chip |
| 09/15/2010 | CN101834464A Charging pile for electric vehicle |
| 09/15/2010 | CN101834459A Device and method for intelligently charging and discharging storage battery |
| 09/15/2010 | CN101834457A Lithium battery management system |
| 09/15/2010 | CN101834453A Movable type public direct current battery charger for mobile phone |
| 09/15/2010 | CN101834431A Method for preventing grid-connected island effect of distributed power source |
| 09/15/2010 | CN101834430A Data circuit protection structure with binding line safety net |
| 09/15/2010 | CN101834429A Protecting system of wind power generator |
| 09/15/2010 | CN101834420A High-temperature protector for freezing disaster automatic prevention system for power transmission line |
| 09/15/2010 | CN101567651B Electrical safety circuit in electric automobile |
| 09/15/2010 | CN101521407B Three-segment out-of-step self-adaptive disconnecting method |
| 09/15/2010 | CN101431229B Asynchronous switch-on protection method for generator set |
| 09/10/2010 | WO2010102100A2 Method and apparatus for improving the performance of an inverter |
| 09/10/2010 | WO2010078132A3 Hybrid distribution network power restoration control |
| 09/09/2010 | US20100226052 Driving device and protection method thereof |
| 09/09/2010 | US20100226051 Method and apparatus for improving the performance of an inverter |
| 09/09/2010 | US20100226049 Systems and Methods for Protecting a Series Capacitor Bank |
| 09/08/2010 | EP2226914A2 Systems and methods for protecting a series capacitor bank |
| 09/08/2010 | EP2225135A2 Starting method for hybrid drives |
| 09/08/2010 | CN201577056U Compact shelf power driving device controlled by PWM |
| 09/08/2010 | CN201577054U Overturn controlling circuit of case turner |
| 09/08/2010 | CN201577045U Wind-solar complementary control inverter |
| 09/08/2010 | CN201577031U High-frequency and high-voltage power supply control circuit |
| 09/08/2010 | CN201576932U User demarcation intelligent load switch |
| 09/08/2010 | CN201576931U Anti-overvoltage measurement and control device |
| 09/08/2010 | CN201576930U Safety protection device for control circuit of automatic reeding machine |
| 09/08/2010 | CN201576929U Remote-control type multifunctional protective controller specially used for color TV and computer |
| 09/08/2010 | CN1658469B Battery pack, battery protection processing apparatus, and startup control method of the battery protection processing apparatus |
| 09/08/2010 | CN101826826A Intelligent motor control cabinet |
| 09/08/2010 | CN101826814A Rail pressure generation module and system integration technology |
| 09/08/2010 | CN101826813A Intelligent DC/AC inverter |
| 09/08/2010 | CN101826771A Driving device and overload protection method thereof |
| 09/08/2010 | CN101826745A Lithium ion power battery lossless charger |
| 09/08/2010 | CN101826737A Battery charging control device and battery balance charging controller |
| 09/08/2010 | CN101826726A Three-phase load unbalanced limitation method and voltage-regulation type three-phase load unbalanced limiter |
| 09/08/2010 | CN101826723A Power grid voltage comprehensive control system |
| 09/08/2010 | CN101826722A Relay protecting private channel switching system of high-voltage electric power circuit |
| 09/08/2010 | CN101826721A Low-voltage switch cabinet fault indicating and alarm system |
| 09/08/2010 | CN101826720A Clamping absorption integrated circuit for two-stage matrix converter |
| 09/08/2010 | CN101826719A Trip-proof lockout microcomputer protection system |
| 09/08/2010 | CN101556300B Detection method of incorrect tripping caused by ground current invasion to differential analog channel |
| 09/08/2010 | CN101494374B Current protection control method for vacuum circuit breaker |
| 09/08/2010 | CN101442266B Soft rock electrochemical stabilization DC power supply device |
| 09/08/2010 | CN101425682B Electric grid relay protection constant value on-line check integrated data processing method |
| 09/08/2010 | CN101247037B Method for protecting steam-electric generating set shafting through modality divergence criterion of torsional oscillation protection |
| 09/08/2010 | CN101162837B Battery protection system |
| 09/08/2010 | CN101093935B Self-adapting method for determining single-phase earth fault of generator stator |
| 09/07/2010 | US7791912 Protection method, system and apparatus for a power converter |
| 09/07/2010 | US7791847 Fault-sensing and protecting apparatus for soft start circuit of inverter and method for the same |
| 09/07/2010 | US7791494 Voltage monitoring device |
| 09/07/2010 | US7791310 Vehicle electrical system including battery state of charge detection on the positive terminal of the battery |
| 09/07/2010 | US7791296 Motor protection system |
| 09/07/2010 | US7788936 Adaptive intelligent circulation control methods and systems |
| 09/02/2010 | WO2010098084A1 Power factor correction circuit with overcurrent protection |
| 09/02/2010 | WO2010097002A1 Improved turn-to-turn short circuit detection device of transformer via differential voltage |
| 09/02/2010 | US20100220418 alternator circuit-breaker with an inserted resistance |
| 09/02/2010 | US20100220417 Compact disconnector circuit-breaker for an alternator |
| 09/02/2010 | US20100219022 Electric motor drive |
| 09/01/2010 | EP2223404A1 Transformer inrush current detector |
| 09/01/2010 | CN201571015U Bi-directional output drive system of bi-directional non-constant electric motor |
| 09/01/2010 | CN201571005U Control circuit of electric automobile motor |
| 09/01/2010 | CN201570981U AC-DC isolation control circuit |
| 09/01/2010 | CN201570912U 10kV subdistrict power supply intelligent system |
| 09/01/2010 | CN201570858U Generator lightning protection device |
| 09/01/2010 | CN201570857U Low-current earthing line selection device based on distributed measurement technology |
| 09/01/2010 | CN201570856U Intelligent monitoring unit applied to high-voltage frequency inverter |
| 09/01/2010 | CN201570855U Three-phase asynchronous motor anti-shaking electric protection device |
| 09/01/2010 | CN201570854U Digital low-frequency and low-voltage load shedding protective device of electric motor |
| 09/01/2010 | CN201570853U Open-phase automatic protector of motor |
| 09/01/2010 | CN201570852U Open-phase protection control circuit for pressing machine |
| 09/01/2010 | CN201570851U Structure for limiting eddy current heating in generator current rising test |
| 09/01/2010 | CN201570850U Excitation circuit with auxiliary inverter pulse generator |
| 09/01/2010 | CN201570825U Wire outlet box of transformer |
| 09/01/2010 | CN201570379U Capacitor |
| 09/01/2010 | CN201570359U Dry-type lightning proof transformer |
| 09/01/2010 | CN1937399B Domestic electric washing machine using variable frequency driving with embedded thermal protection |
| 09/01/2010 | CN1866043B System and method for determining location of phase-to-earth fault |
| 09/01/2010 | CN101820247A Electric control loop of elevator main motor |
| 09/01/2010 | CN101820245A Permanent magnet generator voltage stabilizing device and method for regulating voltage by adopting pulse width modulating technology |
| 09/01/2010 | CN101820181A Battery device |
| 09/01/2010 | CN101820168A Low-frequency low-voltage load shedding protective device for digital motor |
| 09/01/2010 | CN101820167A Motor heat protection method |
| 09/01/2010 | CN101820166A Magnetizing inrush current discrimination method based on equivalent excitation impedance frequency domain character of transformer |
| 09/01/2010 | CN101820165A Power device for alarm system |
| 09/01/2010 | CN101819242A Improved detecting device for turn-to-turn short circuit of transformer by using voltage differential |
| 09/01/2010 | CN101420120B Method for dynamically simulating 1000kV line protection experiment |
| 09/01/2010 | CN101394136B Industrial frequency phase shift apparatus |
| 08/31/2010 | US7787269 Switching power supply device |