| 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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| 07/02/2008 | CN100399669C Method for preventing error charging for charger automatic judging charging storage battary voltage |
| 07/02/2008 | CN100399664C Power circuit protection apparatus |
| 07/02/2008 | CN100399663C Negative sequence direction inter-turn protection method with fault component start-up and steady state component preservation |
| 07/02/2008 | CN100399662C Digital high votage parallel reactor longitudinal protection method with end braking |
| 07/01/2008 | US7394675 Power supplying apparatus and power supplying method |
| 07/01/2008 | US7394671 Controller IC, DC-AC conversion apparatus, and parallel running system of DC-AC conversion apparatuses |
| 07/01/2008 | US7394634 Control system and method with constant maximum current for power converter protection |
| 07/01/2008 | US7394632 Line interface module |
| 07/01/2008 | US7394629 Motor overload tripping system and method with multi-function circuit interrupter |
| 07/01/2008 | US7394627 Frequency converter having an intermediate circuit without any capacitors |
| 07/01/2008 | US7394264 Device for non-dissipative measurement of the current in an inductor |
| 07/01/2008 | US7394226 High voltage generation systems and methods |
| 06/28/2008 | CA2614400A1 Relay device and corresponding method |
| 06/26/2008 | WO2008074736A1 Drive device for at least one electric motor and drive control unit interacting with the drive device |
| 06/26/2008 | WO2008074273A1 Rectifier with short circuit current limiting |
| 06/26/2008 | WO2008042070A3 Inverter with improved overcurrent protection circuit, and power supply and electronic ballast therefor |
| 06/26/2008 | WO2008024929A3 Switch mode power converter having multiple inductor windings equipped with snubber circuits |
| 06/26/2008 | US20080151444 Method and apparatus for protection against current overloads |
| 06/26/2008 | US20080151443 A/V Media Distribution in a Power Center |
| 06/26/2008 | US20080150460 Drive arrangement for a portable working machine |
| 06/26/2008 | US20080150282 Method of Controlling a Wind Turbine Connected to an Electric Utility Grid During Malfunction in Said Electric Utility Grid, Control System, Wind Turbine and Family Hereof |
| 06/26/2008 | DE102006060778A1 Durchgängigkeitsüberwachung eines Energieübertragungselementes Transmissivity monitoring of an energy transfer element |
| 06/26/2008 | DE102006060208A1 Device for determining and limiting over current in coil in three-phase or poly-phase electrical motor for use in washing machine, has comparator, by which current is compared in direct current voltage intermediate circuit |
| 06/26/2008 | DE102006060034A1 Verfahren und Vorrichtung zum Messen der Betriebstemperatur eines Antriebsmotors Method and device for measuring the operating temperature of a drive motor |
| 06/26/2008 | DE102006059708A1 Antriebsgerät für zumindest einen elektrischen Motor und mit dem Antriebsgerät zusammenwirkende Antriebssteuerung Drive unit for at least one electric motor and the drive unit cooperating drive control |
| 06/25/2008 | EP1935228A1 Power assembly for portable equipment |
| 06/25/2008 | CN201078829Y Fault detection controlling apparatus on column |
| 06/25/2008 | CN201078828Y Fault detection controlling apparatus on column |
| 06/25/2008 | CN101208846A Power storage device |
| 06/25/2008 | CN101207294A Battery pre-charging circuit |
| 06/25/2008 | CN101207282A Apparatus and method for implementation of orbit traffic direct current feed protection |
| 06/25/2008 | CN101207281A Multi-ended fault location system |
| 06/25/2008 | CN101207280A Method and device of intelligent calibration for power system relay protection |
| 06/25/2008 | CN101207279A Anti-overstep tripping system |
| 06/25/2008 | CN101207278A Feed line automatization terminal |
| 06/25/2008 | CN101207277A Electrical fuse circuit |
| 06/25/2008 | CN101207276A Protection system for series connection lithium cell |
| 06/25/2008 | CN101207275A Power capacitor protector |
| 06/25/2008 | CN101207274A Wind power generation protective system |
| 06/25/2008 | CN101207273A Method for inhibiting voltage transformer noise caused by DC magnetic biasing |
| 06/25/2008 | CN101207272A Turn space protection for reactor sequence component direction |
| 06/25/2008 | CN100397745C Battery-powered tool capable of detecting discharged battery pack |
| 06/25/2008 | CN100397741C Method for protecting series lithium cells and circuit thereof |
| 06/25/2008 | CN100397090C Apparatus and method for evaluating underground electric power cables |
| 06/25/2008 | CN100397089C Fault location using measurements of current and voltage from one end of a line |
| 06/25/2008 | CN100396925C Protector for closed compressor and closed compressor using the same |
| 06/24/2008 | US7391629 Switching mode power supply with controller for handling overcurrents |
| 06/24/2008 | US7391597 Switchgear with arc-resistant features |
| 06/24/2008 | US7391194 Apparatus and method for minimizing power loss associated with dead time |
| 06/24/2008 | US7391185 Battery pack protection circuit with plural protective means, and battery pack including the protection circuit |
| 06/24/2008 | US7391176 Actuator for operating a rolling shutter |
| 06/19/2008 | WO2008071899A1 A method and an apparatus for protecting a bus in a three-phase electrical power system |
| 06/19/2008 | WO2008071593A1 Method and device for determining a drive force produced by an electric motor |
| 06/19/2008 | WO2008049958A3 Arrangement in a synchronous machine and method of connecting a synchronous machine |
| 06/19/2008 | WO2007050275A8 Reduction of inrush current due to voltage sags |
| 06/19/2008 | US20080144341 Power converter |
| 06/19/2008 | US20080144246 Combination current sensor and relay |
| 06/19/2008 | US20080144237 Thermal Protection Apparatus and Method for Hybrid Vehicles |
| 06/19/2008 | US20080144236 Driving circuit and related driving method for providing feedback control and open-circuit protection |
| 06/19/2008 | US20080143461 Direct current and battery disconnect apparatus |
| 06/19/2008 | CA2672182A1 Method and system for video surveillance system motor overcurrent protection |
| 06/19/2008 | CA2671867A1 A method and an apparatus for protecting a bus in a three-phase electrical power system |
| 06/18/2008 | EP1933440A2 Earth fault protection of a frequency converter |
| 06/18/2008 | CN201075818Y Power adapter |
| 06/18/2008 | CN201075672Y Microcomputer protection intelligent test control apparatus |
| 06/18/2008 | CN201075671Y Electromagnetic furnace IGBT high voltage protective circuit with low cost |
| 06/18/2008 | CN201075670Y IGBT drive protective circuit |
| 06/18/2008 | CN201075669Y System and device for multipath power unit temperature real time supervisory control in high power frequency converter |
| 06/18/2008 | CN201075668Y Alternating current motor electric current detecting type control system |
| 06/18/2008 | CN201075667Y Out-of-step protection device of synchronous motor |
| 06/18/2008 | CN201075666Y Anti-overheat detecting apparatus of alternating current motor |
| 06/18/2008 | CN201075665Y Protection test control apparatus having functions of alternating-current/direct-current general use and checking the same term |
| 06/18/2008 | CN201075364Y Multifunctional phase-interruption leakage circuit breaker for three-phase motor |
| 06/18/2008 | CN101203994A Apparatus for short circuit protection |
| 06/18/2008 | CN101202515A Electric power convertion device |
| 06/18/2008 | CN101202462A Multifunctional carry-on power supply |
| 06/18/2008 | CN101202442A Method for accelerating discrimination reclosing route selection based on two sides TV |
| 06/18/2008 | CN101202441A Method for protecting electric impedance element regulation by load self-adapting line |
| 06/18/2008 | CN101202440A Protection circuit of relay right acting |
| 06/18/2008 | CN101202439A Data protection circuit in singlechip system power off and method thereof |
| 06/18/2008 | CN101202438A Electronic control systems and methods |
| 06/18/2008 | CN101202437A Plastic shell type electromechanical integration three phase ac electric motor protector |
| 06/18/2008 | CN101202436A Protection between stator turns special for triple-frequency harmonical increment brake |
| 06/18/2008 | CN101202424A Flame-proof type dual power supply multi-loop combined switch for mining |
| 06/18/2008 | CN101201380A Method for faulty orientation and subsection of power system low current grounding |
| 06/18/2008 | CN101201379A Method for faulty indication and subsection of power system low current grounding |
| 06/18/2008 | CN100395933C Method for discriminating directions of fault components in positive / negative sequence, and direction of homopolar power |
| 06/17/2008 | US7388360 Method and apparatus to provide temporary peak power from a switching regulator |
| 06/12/2008 | WO2008069943A1 System and method for electric current and power monitoring and control of a generator |
| 06/12/2008 | WO2008068437A1 Signaling method and device for impaired function of an electronic power system in a multiple-phase alternator |
| 06/12/2008 | WO2008067786A1 Semiconductor protective elements for controlling short-circuits at the dc end of voltage source converters |
| 06/12/2008 | US20080137382 Collection and transmission system |
| 06/12/2008 | US20080137258 Method for Operating a Transmission Line and Correspondingly Constructed Device |
| 06/12/2008 | US20080137246 Relay system in substation and PCM current differential relay system |
| 06/12/2008 | US20080137241 Anti-Surge Power Adapter |
| 06/12/2008 | US20080137239 Motor power device and motor including the same |
| 06/12/2008 | US20080134841 Drive engagement, safety and control apparatus for a powered connector driver |
| 06/12/2008 | DE10005449B4 Überspannungsschutzvorrichtung für einen Matrixumrichter Overvoltage protection device for a matrix converter |
| 06/12/2008 | CA2671819A1 Semiconductor protection elements for controlling short circuits at the dc end of voltage source converters |
| 06/12/2008 | CA2670890A1 System and method for electric current and power monitoring and control of a generator |