| 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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| 06/11/2008 | EP1931022A2 Refrigerating apparatus and an inverter device used therein |
| 06/11/2008 | EP1929604A1 Control system and method for controlling a permanently excited electric motor |
| 06/11/2008 | EP1929603A1 Control system and method for controlling a permanently excited electric motor |
| 06/11/2008 | EP1929602A1 Method and system for through fault detection in electrical devices |
| 06/11/2008 | EP1662263B1 Dry-type high-voltage load system device and method for preventing chain disconnection/arc discharge of the device |
| 06/11/2008 | CN201072606Y Manufactory power supply integrated automation experiment system |
| 06/11/2008 | CN201069945Y Time control multifunctional protector for oxygenation |
| 06/11/2008 | CN101199094A Electric power storage system |
| 06/11/2008 | CN101197499A Method for actuating the motor of a battery driven tool |
| 06/11/2008 | CN101197229A Protection breaker of electric motor |
| 06/11/2008 | CN100394660C Distribution network automatic separating fault switch controller |
| 06/11/2008 | CN100394659C Asynchronous method TA saturation detected relay protection method |
| 06/11/2008 | CN100394658C Transformer longitudinal error protective element with zero sequence ratio brake |
| 06/11/2008 | CN100394657C Phase-splitting brake device for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 06/11/2008 | CN100394656C Maximum interphase and zero-sequence fault component braking method for preventing malfunction for transformer protection |
| 06/11/2008 | CN100394655C Maximum current zero-sequece fault component braking method for preventing malfunction for transformer protection |
| 06/10/2008 | US7385833 Snubber circuit for a power converter |
| 06/10/2008 | US7385795 Cordless power tool with a protected weak link element |
| 06/10/2008 | US7385794 Secondary battery protection device |
| 06/10/2008 | US7385792 Electronic control apparatus |
| 06/10/2008 | US7385369 AC fan motor driving circuit having capability of monitoring the rotation rate and status of the AC fan motor |
| 06/10/2008 | US7385300 Method and apparatus for determining actual reactive capability curves |
| 06/05/2008 | WO2008067420A1 Short circuit protection circuit |
| 06/05/2008 | WO2008065471A1 Over-voltage protection circuit |
| 06/05/2008 | WO2008064914A2 Calibrating a powered actuator |
| 06/05/2008 | WO2008046953A3 Synchronous machine |
| 06/05/2008 | US20080130179 Method And Device For Fault Detection In Transformers Or Power Lines |
| 06/05/2008 | US20080130178 Load dump protection for power fet device |
| 06/05/2008 | DE102007047894A1 Motor control device i.e. shift range changeover control device for controlling e.g. drive shift range, of automatic transmission of vehicle, has learning device lowering torque of motor in course of execution of strike control |
| 06/05/2008 | DE102006055867A1 Integrierte Schaltung mit Strahlungsschutz Integrated circuit with radiation protection |
| 06/05/2008 | DE102004008026B4 Transformatoren-Schutzrelais Transformer protection relay |
| 06/04/2008 | EP1928068A1 System and method of detecting electrical faults in electrothermal valves |
| 06/04/2008 | CN201069856Y An intelligent power-saving protection device for electromotor |
| 06/04/2008 | CN201069852Y A computer protection device |
| 06/04/2008 | CN201069700Y High-stability dry three-phase combined mutual inductor |
| 06/04/2008 | CN101194403A Method for avoiding undesired, measurement error-induced protective tripping within a protection system of HVDC transmission system |
| 06/04/2008 | CN101194291A Arrangement provided with a recording device |
| 06/04/2008 | CN101192756A Balance charging and discharging protection circuit of secondary battery and its method |
| 06/04/2008 | CN101192752A High-voltage arc ground recognition method based on spectrum analysis |
| 06/04/2008 | CN101192751A Intelligent home electrical appliance and automatic power reclosing protection breaker |
| 06/04/2008 | CN101192750A Battery pack/system and method with embedded cell monitor |
| 06/04/2008 | CN101192749A Power protection circuit |
| 06/04/2008 | CN101192748A Description of automatic computing program of differential current of digital transformer differential protection |
| 06/04/2008 | CN101192747A No contact long life soft start energy-saving distribution box |
| 06/04/2008 | CN101192686A Method for protecting accumulator cell in wind-light complementary system and wind-light complementary system |
| 06/04/2008 | CN100392972C Switch-mode power supply with over-current protection |
| 06/04/2008 | CN100392936C Integration protection system based on distance algorithm, and protection method thereof |
| 06/04/2008 | CN100392935C Protective equipment for a series-capacitor installation |
| 06/04/2008 | CN100392934C Phase-splitting difference stream method for preventing voltage transformer differential protection unwanted operation by utilizing fault components |
| 06/04/2008 | CN100392933C Negative sequence synthesized integrated brake device for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 06/04/2008 | CN100392931C Method and filter for filtering electrical signal representing electric power system parameter |
| 06/04/2008 | CN100392786C Control device of permanent magnetic contactor |
| 06/03/2008 | US7382600 Charge storage device |
| 06/03/2008 | US7382114 PFM-PWM DC-DC converter providing DC offset correction to PWM error amplifier and equalizing regulated voltage conditions when transitioning between PFM and PWM modes |
| 05/29/2008 | WO2008063859A2 Adaptive relaying controlled by autonomous event detection |
| 05/29/2008 | WO2008063043A1 Flashover analysis tool |
| 05/29/2008 | WO2008062706A1 Voltage output circuit, integrated circuit and electronic device |
| 05/29/2008 | WO2007109271B1 High side reset logic for gate driver |
| 05/29/2008 | DE102007052467A1 Display e.g. TV, rotation device, has controller that measures angular speed of rotating part after receiving rotation angle signal from rotary sensor and holds actuation of engine part, if measured angular speed exceeds error range |
| 05/29/2008 | DE102005061532B4 Lasttrennschaltung zum stromlosen Verbinden und Trennen von elektrischen Kontakten Disconnector circuit electroless connecting and disconnecting electrical contacts |
| 05/29/2008 | DE102005009069B4 Steuerschaltung einer Leistungs-Halbleiter-Vorrichtung und steuernde integrierte Schaltung Control circuit of a power semiconductor device and controlling integrated circuit |
| 05/29/2008 | CA2669729A1 Adaptive relaying controlled by autonomous event detection |
| 05/28/2008 | CN201066828Y Electromotive intelligent power-saving starter |
| 05/28/2008 | CN201066796Y Portal large-capacity power device |
| 05/28/2008 | CN201066784Y Fire striking protection device for traveling wave tube |
| 05/28/2008 | CN201066783Y Over-voltage protector for current mutual inductor |
| 05/28/2008 | CN201066782Y An automatic correction device for three-phase AC incorrect phase |
| 05/28/2008 | CN101189777A Fault current limiting system |
| 05/28/2008 | CN101188355A Method for converting the end electric screen current of mutual inductor into line voltage and insulation line monitoring device |
| 05/28/2008 | CN101188354A Test simulation method for failure line selection of small current ground system |
| 05/28/2008 | CN101187956A A device and method for realizing simulated DC feedback failure of rail traffic |
| 05/28/2008 | CN100391098C Multiple functional integrated control system for electromotor |
| 05/28/2008 | CN100391076C Safety operation monitoring system and method for down-hole electric network |
| 05/28/2008 | CN100391075C Safety sealing impulse method of medium-high voltage three-level converter based on IGCT |
| 05/28/2008 | CN100391074C Protection system for protecting three-phase distributing transformer with liquip-dielectric insulating and including phase isolating switch |
| 05/28/2008 | CN100390911C Layered capacity |
| 05/28/2008 | CN100390552C Automatic tuning and small current grounding failure wire selection system of 8421 parallel reactor composite extinction coil |
| 05/28/2008 | CN100390414C Device and method for overload protection of compressor |
| 05/27/2008 | US7379311 Inrush current control circuit |
| 05/27/2008 | US7379310 Over-voltage protection circuit for a switched mode power supply |
| 05/27/2008 | US7379282 Input and output isolating diode for power dissipation reduction of power supplies |
| 05/22/2008 | WO2008061035A1 Power filter |
| 05/22/2008 | WO2007084035A8 A converter station |
| 05/22/2008 | WO2007015924A8 Fault management of hts power cable |
| 05/22/2008 | US20080119995 Control Apparatus And Method For Controlling An Adjusting Device In A Motor Vehicle |
| 05/22/2008 | US20080116984 Oscillation circuit |
| 05/22/2008 | US20080116851 Secondary Battery Protection Circuit, Battery Pack and Thermosensitive Protection Switch Device |
| 05/21/2008 | DE102007050844A1 Booster-Leistungsschaltkreis Booster power circuit |
| 05/21/2008 | DE102006054354A1 Protective circuit for electrical appliance, has short circuit short circuiting output or input clamps during exceedance of threshold value, where control signal regulates limit has same origin as that of circuit that controls short circuit |
| 05/21/2008 | DE102006049715A1 Motor drive's power supply unit for use in area of e.g. living space, has switching power supply connected with supply voltage input with contacts of plug of wall power supply and with output voltage outputs by cable with motor drive |
| 05/21/2008 | CN201063567Y Motor soft starter controller |
| 05/21/2008 | CN201063539Y LLC series resonance converter protection circuit |
| 05/21/2008 | CN201063533Y Overcurrent self-locking bridge type driving circuit |
| 05/21/2008 | CN201063440Y Broadband compensation quarter-wave line RF lightning arrester |
| 05/21/2008 | CN201063439Y Printing current-limiting sample circuit |
| 05/21/2008 | CN201063438Y Circuit of paper crusher |
| 05/21/2008 | CN201063352Y Lead acid accumulator maintenance instrument special for electric vehicle |
| 05/21/2008 | CN201063324Y Intelligent AC vacuum contactor |
| 05/21/2008 | CN201063272Y Lightning protection device for transformer and power supply line |
| 05/21/2008 | CN101183794A Battery pack |