| 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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| 09/25/2013 | CN103326420A Safety design power supply |
| 09/25/2013 | CN103326409A Battery car charger with timing switch |
| 09/25/2013 | CN103326336A Method and device for eliminating line protection reclosure hidden faults |
| 09/25/2013 | CN103326335A System and method for false action resistance of distance section III based on domain double-type fault characteristic |
| 09/25/2013 | CN103326334A Thyristor rectification tractive power supply system and protective method |
| 09/25/2013 | CN103326333A Asymmetric electric transmission line fault differential protection method and system |
| 09/25/2013 | CN103326332A Three-phase four-wire circuit |
| 09/25/2013 | CN103326331A Method for preventing healthy phase bus-bar differential protection mal-operation during circuit reclosing period |
| 09/25/2013 | CN103326330A Differential protection device based on break variable impedance principle |
| 09/25/2013 | CN103326329A Bus protection method for quick locking in CT (current transformer) asymmetric wire breakage |
| 09/25/2013 | CN103326328A Arc-control device provided with controllable switch and arc-control method |
| 09/25/2013 | CN103326327A Floating charger over-current protection circuit |
| 09/25/2013 | CN103326326A 电池组 Battery |
| 09/25/2013 | CN103326325A Short-circuit and low-voltage protective circuit of output of switching power source |
| 09/25/2013 | CN103326324A IGBT module parallel connection protection circuit applied to high-power inverter |
| 09/25/2013 | CN103326323A Switching power supply protective circuit and method |
| 09/25/2013 | CN103326322A Motor voltage protection and control circuit |
| 09/25/2013 | CN103326321A Motor undervoltage protection method |
| 09/25/2013 | CN103326320A Motor overvoltage protection method |
| 09/25/2013 | CN103326319A Mining fan current protective circuit |
| 09/25/2013 | CN103326318A Electric motor overheating delayed protection device |
| 09/25/2013 | CN103326317A Criterion for allocating high-voltage side auxiliary failure protection for transformer used for convertor station |
| 09/25/2013 | CN103326311A Portable direct-current monitoring protector |
| 09/25/2013 | CN103325627A Fast and intelligent 10KV pole-mounted breaker |
| 09/25/2013 | CN103324180A Battery pack remote monitoring system and method and energy storage and power supply device remote monitoring system |
| 09/25/2013 | CN103323742A System and method for grid fault identification based on random point distribution PMU |
| 09/25/2013 | CN103323645A Voltage detecting circuit of multiple cell units in series and battery protecting system |
| 09/25/2013 | CN102148495B Single-phase earth fault self-healing device and system |
| 09/25/2013 | CN101916987B Fast electric arc light protection method |
| 09/25/2013 | CN101789586B Protecting structure for preventing interface circuit of receptor equipment from being damaged |
| 09/24/2013 | US8543246 Controlling distribution of electrical power |
| 09/24/2013 | US8542508 Forward converter transformer saturation prevention |
| 09/24/2013 | US8542507 Adaptive synchronous rectification control method and apparatus |
| 09/24/2013 | US8542506 Method and apparatus for controlling the power of a transformer using a soft start circuit |
| 09/24/2013 | US8542469 Methodology for protection of current transformers from open circuit burden |
| 09/24/2013 | US8542468 Fault condition protection |
| 09/24/2013 | US8542467 Switching device |
| 09/24/2013 | US8541989 Power supply apparatus |
| 09/24/2013 | US8541967 Steering control apparatus |
| 09/24/2013 | US8541905 Bi-directional battery voltage converter |
| 09/19/2013 | WO2013137979A1 Trip unit providing short circuit zone location detection, electrical switching apparatus and system including the same |
| 09/19/2013 | WO2013137451A1 Lithium-ion rechargeable battery |
| 09/19/2013 | WO2013137450A1 Lithium-ion rechargeable battery |
| 09/19/2013 | WO2013136775A1 Dc power source device |
| 09/19/2013 | WO2012159878A3 Device for actuating an electronically commutated electric motor |
| 09/19/2013 | DE102012204333A1 Schutzvorrichtung zum Schutz einer elektrischen Schaltung vor Verpolung, Verfahren, Schaltungsanordnung und Fahrzeugsystem Protection device for protecting an electrical circuit against reverse polarity, method, and vehicle circuitry system |
| 09/18/2013 | EP2638611A1 Synchronization method for current differential protection |
| 09/18/2013 | CN203206164U Scroll type electrically-driven compressor PWM motor controller |
| 09/18/2013 | CN203206138U Safe switch power supply |
| 09/18/2013 | CN203206102U Frequency converter driving device |
| 09/18/2013 | CN203205959U Storage battery automatic charging circuit |
| 09/18/2013 | CN203205948U 5V output portable power source |
| 09/18/2013 | CN203205888U Medium-and-small sized hydroelectric generating set dual-system hot backup control system |
| 09/18/2013 | CN203205887U Mining four-quadrant frequency converter |
| 09/18/2013 | CN203205879U A distribution static synchronous compensator (DSTATCOM) controller based on a DSP TMS320F2812 |
| 09/18/2013 | CN203205853U An intelligent controller apparatus used for ship over-current selective protection |
| 09/18/2013 | CN203205852U Low-voltage circuit breaker intelligent controller with regional interlocking protection function |
| 09/18/2013 | CN203205851U Anti-thunder remote early warning monitoring box |
| 09/18/2013 | CN203205850U Breaker tripping coil protector for |
| 09/18/2013 | CN203205849U Combiner box with each loop provided with breaker |
| 09/18/2013 | CN203205848U 电池保护电路 Battery protection circuit |
| 09/18/2013 | CN203205847U Low-power lithium ion storage battery protection circuit for controlling high-power circuit |
| 09/18/2013 | CN203205846U Storage battery protection circuit |
| 09/18/2013 | CN203205845U Battery protection circuit with post-discharge overcurrent protection self-recovery function |
| 09/18/2013 | CN203205844U Switching power supply overvoltage automatic protection circuit |
| 09/18/2013 | CN203205843U Output overcurrent protective circuit |
| 09/18/2013 | CN203205842U Phase-sequence protection system for three-phase asynchronous motor of numerically-controlled machine tool |
| 09/18/2013 | CN203205841U Motor management and operation device |
| 09/18/2013 | CN203205840U Connecting device of extra-high voltage converter station DC measuring device and control protection system |
| 09/18/2013 | CN203197710U Angle grinder with power failure protection function and circuit for angle grinder |
| 09/18/2013 | CN103314496A Circuit assembly for operating an electric load, control device for controlling a drive motor of a household appliance, household appliance and method for operating an electric load in a household appliance |
| 09/18/2013 | CN103314302A Method and device for enhancing the reliability of generator ground fault detection on a rotating electrical machine |
| 09/18/2013 | CN103313493A Electronic ballast with adjustable luminance |
| 09/18/2013 | CN103313492A Electronic ballast with adjustable luminance |
| 09/18/2013 | CN103312262A Motor drive device, fluid compression system and air conditioner |
| 09/18/2013 | CN103312250A Voltage regulating device and method for alternating-current generator |
| 09/18/2013 | CN103312200A Power converter, current limiting unit, control circuit and corresponding control methods |
| 09/18/2013 | CN103312196A Control device for power converter and control method thereof |
| 09/18/2013 | CN103312149A Direct current power supply with constant power output characteristic |
| 09/18/2013 | CN103312010A Electromobile charger with storage battery overheating protecting function |
| 09/18/2013 | CN103311989A Solar fan circuit with function of charge and discharge protection |
| 09/18/2013 | CN103311976A Battery management device, battery management method and battery management system |
| 09/18/2013 | CN103311911A Network type differential protection device for boat and differential protection output determining method |
| 09/18/2013 | CN103311910A Direct current traction power supply system and protective method |
| 09/18/2013 | CN103311909A Method for realizing voltage protection of single-phase earth fault of line by using positive sequence break variable and zero sequence component |
| 09/18/2013 | CN103311908A Method for realizing relay protection of single-phase high-resistance earth fault of power transmission line by using single-ended current magnitude |
| 09/18/2013 | CN103311907A Synchronizing checking relay and angle locking method of synchronizing checking relay |
| 09/18/2013 | CN103311906A Switch displacement island detection and direct-trip island protection method based on wide area information |
| 09/18/2013 | CN103311905A Method and apparatus for adapting earth-fault protection settings in a three-phase electric network |
| 09/18/2013 | CN103311904A Directional area selection interlocking method and device |
| 09/18/2013 | CN103311903A Switch device and power generation system thereof |
| 09/18/2013 | CN103311902A Over-current protection circuit of controller of motor of automobile |
| 09/18/2013 | CN103311901A Power module including leakage current protection circuit |
| 09/18/2013 | CN103311900A Electric vehicle charging circuit with battery overheat preventing function |
| 09/18/2013 | CN103311899A Self-protection method and circuit for power lithium-ion battery pack |
| 09/18/2013 | CN103311898A Battery charging protection circuit |
| 09/18/2013 | CN103311897A Improving device of lithium battery electric core safety |
| 09/18/2013 | CN103311896A Lithium battery protection circuit |
| 09/18/2013 | CN103311895A Under-voltage protection device and system of converter control system |
| 09/18/2013 | CN103311894A Power supply device |