| Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031) |
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| 06/23/2011 | CA2724136A1 System and method for detecting a switching device malfunction |
| 06/22/2011 | EP2337177A1 Electronic system and protection method for electric motors |
| 06/22/2011 | EP2337176A2 Ground fault detection system and method |
| 06/22/2011 | EP2335321A1 Device and method for protecting a link in a medium-, high- or very high-voltage electric network |
| 06/22/2011 | EP2279559B1 Relay system comprising two jfet transistors in series |
| 06/22/2011 | DE102010026246A1 Multipolar circuit-breaker for low-voltage for interrupting phase stream flowing through conductor by electronic trigger unit, has multiplexer providing voltage to input of amplifier whose output is connected with trigger unit |
| 06/22/2011 | DE102010001048A1 Verfahren zum Betreiben eines elektrischen Leuchtmittels sowie Betriebsschaltung A method of operating an electric bulb and operating circuit |
| 06/22/2011 | CN201878043U Self-powered photovoltaic array busbar chamber |
| 06/22/2011 | CN201877821U Novel overvoltage protector of current mutual inductor |
| 06/22/2011 | CN201877799U Universal serial bus (USB) protection circuit |
| 06/22/2011 | CN201877796U Electric identification current limiter |
| 06/22/2011 | CN201877795U Timed current-limiting protection circuit |
| 06/22/2011 | CN201877794U Intelligent controller of residual current circuit breaker |
| 06/22/2011 | CN201877793U Residual current protective circuit breaker with data memory function |
| 06/22/2011 | CN201877792U Residual current protective circuit breaker with emergency power supply |
| 06/22/2011 | CN201877791U Unbalanced current protective circuit device of multi-unit high-frequency power |
| 06/22/2011 | CN201877790U Circuit with functions of two-polar leakage protection and overvoltage/undervoltage protection |
| 06/22/2011 | CN201877789U Electrical isolation circuit for overvoltage/low-voltage protection of quadrupole power supply |
| 06/22/2011 | CN201877788U Relay protector |
| 06/22/2011 | CN201877787U Three-phase power detection protection circuit for ecological house |
| 06/22/2011 | CN201877786U Undervoltage release protection device |
| 06/22/2011 | CN201877785U High-efficiency lightning-protection core |
| 06/22/2011 | CN201877784U Overvoltage and undervoltage protection circuit with self-resetting function |
| 06/22/2011 | CN201877783U Electric element temperature detecting device in control box |
| 06/22/2011 | CN201877782U Commercial alternating current (AC) overvoltage power-off protector |
| 06/22/2011 | CN201877781U Ground power overvoltage reversed-polarity protector of power system |
| 06/22/2011 | CN201877780U Protection circuit with prompting function |
| 06/22/2011 | CN201877779U Device for protecting tunnel kiln circuit |
| 06/22/2011 | CN201877778U Overcurrent protection circuit of solar street lamp |
| 06/22/2011 | CN201877777U Settable current protection circuit based on state of power tube |
| 06/22/2011 | CN201877776U Overflow overload short-circuit protection circuit |
| 06/22/2011 | CN201877775U Open phase and fault phase protector |
| 06/22/2011 | CN201877706U Transformer neutral point combined electrical apparatus device |
| 06/22/2011 | CN201877385U Fuse base overload protection combined structure |
| 06/22/2011 | CN1937343B Overcurrent detection device |
| 06/22/2011 | CN1458723B Power source protector |
| 06/22/2011 | CN102106052A Method and apparatus for fault identification in a power transmission line |
| 06/22/2011 | CN102104276A Adaptive dual-controller power supply used for vehicle |
| 06/22/2011 | CN102104246A Method and device for reducing time limit combination step progression of distribution network relaying protection |
| 06/22/2011 | CN102104243A Power feeding control apparatus |
| 06/22/2011 | CN102104242A Differential protection device and method thereof, and electric device with the same |
| 06/22/2011 | CN101562095B Intelligent controller |
| 06/22/2011 | CN101073188B Additional device in a current limiter for limiting current in the event of a fault |
| 06/21/2011 | US7966520 Software licensing for spare processors |
| 06/21/2011 | US7965487 Neutralization apparatus having minute electrode ion generation element |
| 06/21/2011 | US7965486 Arc flash detection system |
| 06/21/2011 | US7965485 Circuit protection device for photovoltaic systems |
| 06/21/2011 | US7965483 Electronic trip unit of a circuit breaker |
| 06/21/2011 | US7965482 ESD protection circuit and semiconductor device |
| 06/21/2011 | US7965479 Over-current and over-voltage protection assembly apparatus |
| 06/21/2011 | US7965478 System and method for detecting a fault condition |
| 06/21/2011 | US7965477 Protective device with improved surge protection |
| 06/21/2011 | US7965069 Power converter and multiport power converter |
| 06/21/2011 | US7964998 Linearly actuated switch for robot crash protector device |
| 06/21/2011 | CA2785593A1 Redundant module with symmetrical current paths |
| 06/21/2011 | CA2440772C Control arrangement |
| 06/21/2011 | CA2393170C System for power transformer differential protection |
| 06/16/2011 | WO2011070235A1 Electronic protection circuit and protection device |
| 06/16/2011 | WO2011069297A1 Method for arc detection and devices thereof |
| 06/16/2011 | WO2011069256A1 Detecting an abnormality of a switch in a high voltage electrical substation |
| 06/16/2011 | WO2011015587A3 Device for supplying electrical energy from a plurality of strings of photovoltaic modules to a power grid |
| 06/16/2011 | US20110141646 Surge protection circuit for passing dc and rf signals |
| 06/16/2011 | US20110141645 System for dissipating a lightning current generated by a thunderstorm discharge on an aircraft |
| 06/16/2011 | US20110141644 Direct current arc fault circuit interrupter, direct current arc fault detector, noise blanking circuit for a direct current arc fault circuit interrupter, and method of detecting arc faults |
| 06/16/2011 | US20110141641 Circuit breaker with overvoltage protection |
| 06/16/2011 | US20110141640 Power semiconductor device for igniter |
| 06/16/2011 | US20110141635 Thermally protected GFCI |
| 06/16/2011 | US20110141634 Temperature control system for electrical cord reel |
| 06/16/2011 | US20110140636 System and method for providing a control signal |
| 06/16/2011 | DE19500452B4 Verfahren und Vorrichtung zur Überwachung der Funktionsfähigkeit eines Leerlaufstellers Method and apparatus for monitoring the operability of an idling adjuster |
| 06/16/2011 | DE102009057709A1 Vorrichtung zur Ansteuerung von Aktuatoren in einem Kraftfahrzeug A device for control of actuators in a motor vehicle |
| 06/16/2011 | DE102009057479A1 Signalization device for use in over-voltage protection device for signalization of flash current in e.g. off-shore wind energy system, has monitoring device provided for detecting interruption of conductors, which exhibit same large length |
| 06/16/2011 | DE102009049980A1 Fault-current circuit breaker unit, has capacitor connected with plug socket in circuit breaker that comprises certain cut off fault current, where value of capacitor is adjusted after certain and desired cut off fault current |
| 06/16/2011 | CA2818453A1 Detecting an abnormality of a switch in a high voltage electrical substation |
| 06/15/2011 | EP2332225A1 Apparatus and method for adaptive fault detection in mv distribution circuits |
| 06/15/2011 | EP2331978A1 Method and device for supervising secondary circuit of instrument transformer in power system |
| 06/15/2011 | EP1338067B1 An improved digital protection and control device and method thereof |
| 06/15/2011 | CN201869427U Sound-light-controlled inductive time-delay switch |
| 06/15/2011 | CN201869300U Standby energy saving circuit, LED television power supply and LED television |
| 06/15/2011 | CN201869108U Singlechip control switch power supply |
| 06/15/2011 | CN201868950U Intelligent control system for wind power generation and distribution protection |
| 06/15/2011 | CN201868881U Novel secondary low-voltage compensation device for submerged arc furnace |
| 06/15/2011 | CN201868869U Combined type large-capacity self-separating overvoltage protector |
| 06/15/2011 | CN201868866U Storage capacitor protective circuit |
| 06/15/2011 | CN201868865U 380V/220V low-voltage power grid IT (Information Technology) distribution system and leakage protection device thereof |
| 06/15/2011 | CN201868853U Short-circuit protection control device |
| 06/15/2011 | CN201868852U Lightning-proof high-voltage surge resistant transformer with double-colored light indicating function in blowout |
| 06/15/2011 | CN201868846U Earth-leakage protection controller |
| 06/15/2011 | CN201868845U Optical longitudinal differential protection device |
| 06/15/2011 | CN201868844U Surge protector with impact tripping alarm device |
| 06/15/2011 | CN201868843U External overvoltage protector |
| 06/15/2011 | CN201868842U Soft switching mode single-phase alternating-current switch |
| 06/15/2011 | CN201868841U Low-voltage blocked overcurrent protection circuit |
| 06/15/2011 | CN201868840U Inverse time limit current protection circuit |
| 06/15/2011 | CN201868839U 过电流保护电路 The overcurrent protection circuit |
| 06/15/2011 | CN201868838U Over-current protection circuit without shunt trip |
| 06/15/2011 | CN201868837U USB (universal serial bus) circuit |
| 06/15/2011 | CN201868836U Dual-fluid self-restoration circuit breaking device using combined magnet |
| 06/15/2011 | CN201868835U Power limit device for micro power consumption electric appliance |
| 06/15/2011 | CN201868834U Energy-saving control switch circuit for household electrical appliances |