| 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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| 03/05/2008 | EP1894284A2 Method and arrangement for monitoring signals |
| 03/05/2008 | EP1714367A4 Systems and methods that employ inductive current steering for digital logic circuits |
| 03/05/2008 | CN201032686Y Overvoltage protection device for batteries charger |
| 03/05/2008 | CN201032684Y Single phase asynchronous motor protector |
| 03/05/2008 | CN101136608A Mit motorschutzfunktion ausgestattete steuerungsvorrichtung |
| 03/05/2008 | CN101136585A Voltage converter for preventing switch device from being damaged utilizing protection circuit |
| 03/05/2008 | CN101136582A Control method of DC side-discharging circuit of full power convertor |
| 03/05/2008 | CN101136549A Power system separation decision space screening method |
| 03/05/2008 | CN101136547A Short circuit protection circuit of DC power supply |
| 03/05/2008 | CN101134470A Power steering apparatus |
| 03/05/2008 | CN100373735C Stationary reactive compensation monitoring platform with layered distribution type structure |
| 03/05/2008 | CN100373730C Switch power source short circuit protection method and circuit |
| 03/05/2008 | CN100373729C Stator grounding protection with combined third harmonic dynamic alignment criterion and voltage ratio criterion |
| 03/05/2008 | CN100373728C Controllable damp device of ferromagnetic resonance for electromagnetic voltage transformer for distribution network |
| 03/05/2008 | CN100373726C Ratio braking method of variable brake coefficient based on time scale |
| 03/05/2008 | CN100373683C Polymer PTC device |
| 03/04/2008 | US7340355 Compensated current differential relaying method and system for protecting transformer |
| 03/04/2008 | US7339807 Power supply apparatus |
| 03/04/2008 | US7339805 Power supply having voltage blocking clamp |
| 03/04/2008 | US7339804 DC-DC converter |
| 03/04/2008 | US7339774 Automatic battery disconnect system |
| 03/04/2008 | US7339773 Method for driving a semiconductor switch and circuit configuration with a semiconductor switch |
| 03/04/2008 | US7339356 Apparatus and method for controlling a power converter device |
| 03/04/2008 | US7339355 Generator with utility fault ride-through capability |
| 03/04/2008 | US7339352 Battery pack malfunction detection apparatus and battery pack malfunction detection method |
| 03/04/2008 | US7339347 Apparatus and method for reliably supplying electrical energy to an electrical system |
| 03/04/2008 | US7339336 Movable barrier operator auto-force setting method and apparatus |
| 02/28/2008 | US20080052016 System And Method For Managing Fault In A Power System |
| 02/28/2008 | US20080049467 Inverter |
| 02/28/2008 | US20080049466 Method for Controlling Low-Voltage Using Waves Ac and System for Performing the Same |
| 02/28/2008 | US20080049363 System And Method For Managing Fault In A Power System |
| 02/28/2008 | CA2661533A1 Switch mode power converter having multiple inductor windings equipped with snubber circuits |
| 02/27/2008 | CN201029223Y Vehicle mounted power supply and generator control device |
| 02/27/2008 | CN201029209Y Electric intelligent charger |
| 02/27/2008 | CN201029203Y Reactive dynamic compensation regulator switch |
| 02/27/2008 | CN201029202Y Vehicle accumulator protector |
| 02/27/2008 | CN201029201Y Electric motor protector of water system |
| 02/27/2008 | CN201029200Y Intelligent demarcation load switch |
| 02/27/2008 | CN101133546A Malfunction determining device for drive circuit and drive unit including the same, and method for determining malfunction in drive circuit |
| 02/27/2008 | CN101133539A Device and method for sensing temperature of a rotating electromagnetic machine |
| 02/27/2008 | CN101132162A Motor control device and control method thereof |
| 02/27/2008 | CN101132161A Motor controller and control method thereof |
| 02/27/2008 | CN101132136A Charge and discharge control circuit and battery device |
| 02/27/2008 | CN101132130A Wide area relay protection method based on augmented state estimation |
| 02/27/2008 | CN101132129A AC motor over-load inverse time-lag protection method based on heat accumulation |
| 02/27/2008 | CN100372201C Matrix type converter fault protecting method and circuit for supporting fault-tolerant operation |
| 02/27/2008 | CN100372200C Optimized method of main protective configuration for internal fault of largesize motor stator coil |
| 02/26/2008 | US7336509 Method and apparatus for estimating line inductance for PWM rectifier control |
| 02/26/2008 | US7336508 Switching power source apparatus with voltage gate detector for the switch |
| 02/26/2008 | US7336456 Control-motor system |
| 02/26/2008 | US7336455 System and method for proactive motor wellness diagnosis |
| 02/26/2008 | US7336060 Circuit and method for controlling a DC-DC converter by enabling the synchronous rectifier during undervoltage lockout |
| 02/26/2008 | US7336048 Method for operating a power tool |
| 02/21/2008 | WO2008021440A2 Buck converter fault detection method |
| 02/21/2008 | WO2008020808A1 Signal generation unit and method to generate a data signal in a control unit of a power system device |
| 02/21/2008 | US20080044702 Diagnostic system for unbalanced motor shafts for high speed compressor |
| 02/21/2008 | US20080043500 Snubber Circuit and Power Semiconductor Device Having Snubber Circuit |
| 02/21/2008 | US20080043499 Buck converter fault detection method |
| 02/21/2008 | US20080043386 Adjustable lectern system |
| 02/21/2008 | US20080043384 Ceiling fan motor control module |
| 02/21/2008 | US20080043383 Permanent magnet generator protection scheme |
| 02/21/2008 | US20080043382 Complex superconducting fault current limiter |
| 02/21/2008 | US20080042683 Methods and system for detecting winding faults in a generator with parallel windings |
| 02/21/2008 | DE102006036546A1 Kapazitätsladestrombegrenzungseinrichtung, Ladungspumpenanordnung, Verfahren zum Begrenzen eines Ladestromes an einer Ladungspumpe und Verfahren zum Begrenzen des Ladestromes an einen Kondensator Capacitance charging current-limiting device, the charge pump arrangement, method of limiting a charging current to a charge pump and method for limiting the charging current to a capacitor |
| 02/20/2008 | EP1889228A2 Arrangement provided with a recording device |
| 02/20/2008 | CN201025700Y Operation circuit for fan jigger electromotor |
| 02/20/2008 | CN201025698Y Protection device for operation control circuit system of sewage processing pump |
| 02/20/2008 | CN201025694Y A power output protection circuit |
| 02/20/2008 | CN201025690Y DC electromotor with magnetic miss protection circuit |
| 02/20/2008 | CN201025670Y Dual and/or protection outlet error tolerance mechanism |
| 02/20/2008 | CN201025606Y A dual slice over-current protective part |
| 02/20/2008 | CN101127608A Wireless network adapter over current protection method and device |
| 02/20/2008 | CN101127503A Micro fuel engine power generation excitation control and protection device and method based on DSP |
| 02/20/2008 | CN101127455A Automatic control device for differential distribution network |
| 02/20/2008 | CN101127439A 50Hz and 100Hz protection and setting method for high voltage DC power input system |
| 02/20/2008 | CN100370666C Action judgment of single phase earthing short-circuit distance relay |
| 02/20/2008 | CN100370387C Control system for electric actuator |
| 02/20/2008 | CN100370266C Diagnostic system and method for electric leak detecting device |
| 02/19/2008 | US7333350 Self driven synchronous rectifier shutdown circuit and method |
| 02/19/2008 | US7333309 Self field triggered superconducting fault current limiter |
| 02/19/2008 | US7332899 Circuit arrangement for monitoring a voltage supply, and for reliable locking of signal levels when the voltage supply is below normal |
| 02/19/2008 | US7331532 Acoustic noise reduction using fan speed control |
| 02/14/2008 | WO2008017804A1 Switch and motor assembly |
| 02/14/2008 | US20080037300 Control apparatus for semiconductor power converter |
| 02/14/2008 | US20080037187 Anomaly control device for a dual fan of computer |
| 02/14/2008 | US20080036431 Voltage Regulator Having Overvoltage Protection |
| 02/14/2008 | US20080036409 Method For Controlled Braking Of A Door And Device For Applying Said Method |
| 02/14/2008 | US20080034879 Constant power dissipation in capacitance pressure transducers |
| 02/14/2008 | DE102006037227B3 Safety switch for selective current disconnection, on a current overload, has a current overload path which is dead on normal working and triggers the selective switch on a short circuit |
| 02/13/2008 | EP1887672A1 System linkage inverter apparatus |
| 02/13/2008 | EP1887369A1 Device and method for monitoring the triphase current of a triphase electric motor, particularly in plating |
| 02/13/2008 | EP1886392A1 Method for avoiding undesired, measurement error-induced protective tripping within a protection system of an hvdc transmission system |
| 02/13/2008 | EP1250741B1 Inrush current limiting circuit, power source device and power conversion device |
| 02/13/2008 | EP0972327B1 Battery protection system |
| 02/13/2008 | CN201022237Y Over voltage protection circuit and power supply device |
| 02/13/2008 | CN201022185Y Electromotor controller |
| 02/13/2008 | CN201022151Y Self dormancy control circuit and battery system |
| 02/13/2008 | CN201022147Y Three-phase motor secure control system |
| 02/13/2008 | CN101123397A DC power conversion circuit having self-auxiliary power and load fault protection |
| 02/13/2008 | CN101123364A Over charging/discharging protection circuit for charging/discharging system of multiple serial battery |