| 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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| 01/26/2012 | WO2012012517A2 Sensing and control electronics for a power grid protection system |
| 01/26/2012 | WO2012012426A2 Continuous uninterruptable ac grounding system for power system protection |
| 01/26/2012 | WO2012010572A1 Method for operating an output stage in a controller |
| 01/26/2012 | WO2011085980A3 Redundant module with symmetrical current paths |
| 01/26/2012 | US20120019972 Surge Arrester and Arrangement of a Plurality of Surge Arresters to Form an Array |
| 01/26/2012 | US20120019971 Controller Circuit Including a Switch Mode Power Converter and Automatic Recloser Using the Same |
| 01/26/2012 | US20120019965 Continuous Uninterruptable AC Grounding System for Power System Protection |
| 01/26/2012 | US20120019964 Photovoltaic bipolar to monopolar source circuit converter with frequency selective grounding |
| 01/26/2012 | DE102011014423A1 Circuit breaker for protecting electronic component of electric circuit in motor car, has control unit controlling switch unit in dependence of detected value, and release curve defined in control unit assigning time duration to value |
| 01/26/2012 | DE102010038309A1 Verfahren zum Treiben einer Endstufe in einem Steuergerät Method for driving a power amplifier in a control unit |
| 01/26/2012 | DE102010032031A1 Low voltage power switch for electrical switchgear, has armature that is wound around aperture of iron core for conduction of test current which corresponds to differential current based on output of magnetic sensor of transformer |
| 01/26/2012 | CA2805652A1 Continuous uninterruptable ac grounding system for power system protection |
| 01/26/2012 | CA2805587A1 Sensing and control electronics for a power grid protection system |
| 01/25/2012 | CN202127293U Synthesized monitor for low-voltage power distribution room |
| 01/25/2012 | CN202127241U Electric leakage protection and warning device of single-phase switch |
| 01/25/2012 | CN202127232U Lightning-proof and overcurrent, overvoltage and undervoltage protection circuit |
| 01/25/2012 | CN202127145U Lighting protection plate |
| 01/25/2012 | CN102332828A Simple micro fixed positive output high voltage power circuit |
| 01/25/2012 | CN102332706A Protection circuit and control method for power shortage of car storage battery |
| 01/25/2012 | CN102332705A Short-circuit protection circuit of insulated gate bipolar translator (IGBT) of high-power frequency conversion device |
| 01/25/2012 | CN102332703A Electric protection method for shore power system |
| 01/25/2012 | CN102332702A Intelligent real-time on-line displaying and controlling leakage protector and control method thereof |
| 01/25/2012 | CN102332701A Safety intelligent leakage protector and control method thereof |
| 01/25/2012 | CN102332700A Anti-lightning leakage detection and protection circuit |
| 01/25/2012 | CN102332699A Ground wire safety voltage control system |
| 01/25/2012 | CN102332698A Alternating current overvoltage poweroff protector |
| 01/25/2012 | CN102332697A Measuring transient electrical activity in aircraft power distribution systems |
| 01/25/2012 | CN101552451B Switch power supply cycle-by-cycle wave over-voltage protection circuit |
| 01/25/2012 | CN101479904B A time alert device for use together with an earth leakage protection device |
| 01/25/2012 | CN101452038B Low current neutral grounding electric network single-phase earth fault diagnostic method |
| 01/24/2012 | US8102634 Differential protection method, system and device |
| 01/24/2012 | US8102633 Power supply equalization circuit using distributed high-voltage and low-voltage shunt circuits |
| 01/24/2012 | US8102632 Electrostatic discharge power clamp trigger circuit using low stress voltage devices |
| 01/24/2012 | US8102631 Computer power supply and standby voltage discharge circuit thereof |
| 01/24/2012 | US8102191 Window comparator circuit for limiting input voltage applied to object circuit |
| 01/24/2012 | CA2326434C Distributed logic in multiple protective relays |
| 01/19/2012 | WO2012008170A1 Protection relay apparatus |
| 01/19/2012 | US20120014029 Surge Arrester |
| 01/19/2012 | US20120014027 Transient voltage suppressor for multiple pin assignments |
| 01/19/2012 | US20120014026 Protection system having reduced energy let-through mode and zone selectivity |
| 01/19/2012 | US20120014024 Method of Testing a Structure Protected from Overvoltages and the Corresponding Structure |
| 01/19/2012 | US20120014022 Integrated power supply protection circuit with fault detection capability |
| 01/18/2012 | EP2408079A2 Method and system for power quality protection |
| 01/18/2012 | EP2406824A1 A voltage suppressor component |
| 01/18/2012 | EP2375525A9 Method and apparatus for differential protection of an electric connection |
| 01/18/2012 | EP1371075B1 Control arrangement |
| 01/18/2012 | CN202121375U Power supply controller |
| 01/18/2012 | CN202121321U Direct current high voltage circuit of electric automobile air conditioner |
| 01/18/2012 | CN202121302U DC supply equipment voltage abnormity protective circuit |
| 01/18/2012 | CN202121300U Overload protection device of electric winch |
| 01/18/2012 | CN202121295U Electrical protective device of shore power supply system |
| 01/18/2012 | CN202121293U Mining flame-proof and essentially safe concentrated leakage selection protective device |
| 01/18/2012 | CN202121292U Power failure protective circuit and power supply circuit |
| 01/18/2012 | CN202121291U Energy saving control circuit of over-current protection |
| 01/18/2012 | CN202121290U Novel arc extinguishing type electrical fireproof short circuit protection device |
| 01/18/2012 | CN202121289U Novel direct current low voltage sparger |
| 01/18/2012 | CN202121288U Multi-path fault protection circuit |
| 01/18/2012 | CN202121173U Anti-leakage plug |
| 01/18/2012 | CN202121169U Energy-saving wall-buried safety power strip |
| 01/18/2012 | CN202119813U Wireless metering terminal of high pressure |
| 01/18/2012 | CN202115451U Intelligent electric distribution system |
| 01/18/2012 | CN102326309A Electrical protection device and control method of the electrical protection device |
| 01/18/2012 | CN102324735A Electric vehicle and motor overspeed protection method and device of same |
| 01/18/2012 | CN102324733A Protection circuit of power window |
| 01/18/2012 | CN102324729A Secondary over-voltage protector for current transformer |
| 01/18/2012 | CN102324724A Electric shock protection method |
| 01/18/2012 | CN102324723A Flameproof phase-sensitive short circuit protection feed switch and working method thereof |
| 01/18/2012 | CN102324722A Current differential protection method based on fault component current amplitudes and phase differences |
| 01/18/2012 | CN102324721A Overvoltage automatic power off device for 220V alternating current |
| 01/18/2012 | CN102324720A Fault current limiter |
| 01/18/2012 | CN102324719A Light-emitting diode (LED) output short-circuit protection method, circuit and LED lighting circuit |
| 01/18/2012 | CN102324718A Power leakage protector |
| 01/18/2012 | CN102324717A Leakage protection device |
| 01/18/2012 | CN102324665A Multifunctional power wire device |
| 01/18/2012 | CN101257201B Direct current protecting observe and control system |
| 01/17/2012 | US8099610 Removable device for injecting electric power for an ethernet network |
| 01/17/2012 | US8098471 Integrated circuit arrangement and circuit array |
| 01/17/2012 | US8098469 Electricity delivery system |
| 01/17/2012 | US8098468 Hardware overvoltage disconnecting circuit |
| 01/17/2012 | US8098467 Method for avoidance of inadvertent protective tripping as a result of measurement errors within a protection system for an HVDC transmission installation |
| 01/17/2012 | US8098465 AFCI breaker providing protection for multiple branch circuits in an electrical panel |
| 01/17/2012 | CA2338687C Method and apparatus for deriving power system data from configurable source points |
| 01/12/2012 | WO2012006239A1 Secondary thermal sensor for primary conductors |
| 01/12/2012 | WO2012003888A1 Fast distance protection for energy supply networks |
| 01/12/2012 | US20120011177 Transaction-safe fat file system improvements |
| 01/12/2012 | US20120008255 Encapsulation System For A Single Phase Encapsulated Channel Switchgear |
| 01/12/2012 | DE102011078899A1 Transistor-Halbbrückensteuerung Transistor half bridge control |
| 01/12/2012 | DE102010031061A1 Method for protecting load in motor car and diagnosing aging state of load, involves delivering statement about aging state of load based on comparison result of time characteristics of load current |
| 01/12/2012 | CA2803296A1 Secondary thermal sensor for primary conductors |
| 01/11/2012 | EP1886392B1 Method for avoiding undesired, measurement error-induced protective tripping within a protection system of an hvdc transmission system |
| 01/11/2012 | EP1763914B1 Electronic protection devices for circuit-breakers |
| 01/11/2012 | EP1386381B1 Circuit breaker comprising an electronic trigger and a bypass switch |
| 01/11/2012 | CN202111663U AC variable frequency driver for detection |
| 01/11/2012 | CN202111476U Intelligent power saver based on electromagnetic balance |
| 01/11/2012 | CN202111467U Multi-polar low voltage circuit breaker |
| 01/11/2012 | CN202111459U Safety protection device of electric blanket |
| 01/11/2012 | CN202111458U Electric leakage detection protection circuit with lightning impulse resistance function |
| 01/11/2012 | CN202111457U Three-phase power supply input side phase lack power failure detection protection circuit |
| 01/11/2012 | CN202111456U Open-phase detection protection circuit |
| 01/11/2012 | CN202111455U Smart protective charge control metering device for power grid |