| 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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| 04/16/2008 | CN101162836A High-pressure security protection of electrokinetic cell system |
| 04/16/2008 | CN101162835A Magnetic controllable inductor turn-to-turn fault protection method based on differential protection |
| 04/16/2008 | CA2604992A1 Power distribution systems |
| 04/15/2008 | US7359783 Method of detecting obstructions caused by motor-driven power windows and similar devices using fuzzy logic algorithms |
| 04/15/2008 | US7359221 Power supply for use in an electronic energy meter |
| 04/15/2008 | US7359166 Method and control system for controlling electric motors |
| 04/15/2008 | US7359165 Superconducting current limiting element |
| 04/15/2008 | US7359164 Superconducting matrix fault current limiter with current-driven trigger mechanism |
| 04/15/2008 | US7358791 Discharge protection circuit |
| 04/10/2008 | WO2008041368A1 Breaker open/closure control system |
| 04/10/2008 | WO2008040263A1 Redundant protective system and method for the redundant monitoring of objects to be protected in an electrical energy supply system |
| 04/10/2008 | WO2008040054A1 A control circuit |
| 04/10/2008 | US20080084719 Quenching Device for a Converter Bridge with Line Regeneration |
| 04/10/2008 | US20080084718 Self Oscillating Inrush Current Limiting Converter |
| 04/10/2008 | US20080084644 Internal intelligence for remote operated relay |
| 04/10/2008 | US20080084640 Rotation speed controller for fans |
| 04/10/2008 | US20080084639 Method and system for improving voltage regulator accuracy in vehicle alternators |
| 04/10/2008 | US20080084241 Load driving device and electrical device using the same |
| 04/10/2008 | US20080084191 Method and system for protecting voltage regulator driver circuitry during field coil short circuit condition |
| 04/10/2008 | US20080084190 Method and system for communicating voltage regulator switching information to a vehicle computer |
| 04/10/2008 | DE202008001833U1 Notstromversorgungssystem mit einer separaten Schutzanordnung Emergency power supply system with a separate protection order |
| 04/10/2008 | DE19715013B4 Schaltung zum Start einer Maschine und Verfahren zur Steuerung eines Starts einer Maschine A circuit for starting a machine and method for controlling a start of an engine |
| 04/10/2008 | DE102007047044A1 Verfahren und System zum Schutz der Treiberschaltung eines Spannungsreglers bei einem Kurzschlusszustand der Feldspule Method and system for protection of the drive circuit of a voltage regulator in a short circuit state of the field coil |
| 04/10/2008 | DE102007043172A1 Drehstromgenerator mit Permanentmagnet und hoher Leistung mit verbessertem gesteuertem Ausgang Alternator with permanent magnet and high performance with improved controlled output |
| 04/10/2008 | DE102005048529B4 Motorschutzschaltung Motor protection circuit |
| 04/10/2008 | DE102005013246B4 Fehlererfassungssystem für Umrichter Fault detection system for inverters |
| 04/10/2008 | CA2665446A1 Switching control system of circuit breaker |
| 04/09/2008 | EP1909369A2 Switching assembly and method for insulation monitoring for converter applications in operation |
| 04/09/2008 | EP1909368A2 Switching assembly and method for insulation monitoring for converter applications |
| 04/09/2008 | EP1254516A4 High power modulator |
| 04/09/2008 | CN201045753Y Protecting equipment for operation control circuit system of wastewater treatment pump |
| 04/09/2008 | CN201045342Y Oil pumping machine fault automatic control and wireless alarming device |
| 04/09/2008 | CN101159376A Low current neutral grounding malfunction detection and positioning device and method |
| 04/09/2008 | CN101159375A Lithium battery power supply control protection circuit and control protection method |
| 04/09/2008 | CN101159374A Load driving device and electrical device using the same |
| 04/09/2008 | CN101158710A Monitoring battery cell voltage |
| 04/09/2008 | CN101158703A Test method of MOV temperature protecting equipment and MOV temperature protecting equipment tester |
| 04/09/2008 | CN100380802C Motor driver circuit, control method thereof, and electronic apparatus |
| 04/09/2008 | CN100380799C Electric contravariant system main loop topological structure with short-circuit protection and constituting method thereof |
| 04/09/2008 | CN100380771C Cordless power tool with overcurrent protection circuit |
| 04/09/2008 | CN100380766C Direction comparing distance relay apparatus |
| 04/09/2008 | CN100380765C Fault discrimination method based on virtual current phase comparison for protecting bus bar system |
| 04/09/2008 | CN100380764C Rotary hand electric tool and safe starting program |
| 04/08/2008 | US7355867 Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage |
| 04/08/2008 | US7355866 Method of detecting phase-loss state of three-phase power supply |
| 04/08/2008 | US7355830 Overcurrent protection device |
| 04/08/2008 | US7355829 Overvoltage protection circuit, and power source, power supply system and electronic apparatus using the overvoltage protection circuit |
| 04/08/2008 | US7355828 Turbo machinery speed monitor |
| 04/08/2008 | US7355826 Power supply apparatus capable of detecting abnormality of current flowing through drive circuit |
| 04/08/2008 | US7355436 Method for error detection in a drive mechanism |
| 04/08/2008 | CA2478770C Inter-regulator control of multiple electric power sources |
| 04/03/2008 | WO2008037774A1 Thyristor valve of a hvdc transmission system |
| 04/03/2008 | US20080080105 Isolated switched maintain power signature (mps) and fault monitoring for power over ethernet |
| 04/03/2008 | US20080080104 Method and apparatus for parallel engine generators |
| 04/03/2008 | US20080080103 Multiple output voltage regulator |
| 04/03/2008 | DE202007002077U1 Notabschaltung für Solarstromanlagen Emergency shutdown for solar power systems |
| 04/03/2008 | DE202006017942U1 Geräuschabhängige Ansteuerung einer Stellvorrichtung Noise dependent activation of an actuating device |
| 04/03/2008 | DE102006029142B4 Verfahren und Schutzschaltung gegen Überspannung Method and circuit protection against overvoltage |
| 04/02/2008 | EP1906504A2 Protection arrangement of an electric motor |
| 04/02/2008 | CN201044426Y Water source well combination control protection cabinet |
| 04/02/2008 | CN201044400Y Minitype submersible pump with improved protection |
| 04/02/2008 | CN201044365Y Improved structure of equalization battery set |
| 04/02/2008 | CN201044354Y Multi-joint series protective circuit of lithium cell |
| 04/02/2008 | CN201044353Y High-performance transformer device differential protective device |
| 04/02/2008 | CN201044349Y Microcomputer type inverse time-limit over-current relay |
| 04/02/2008 | CN101154889A Output control circuit of switch power supply |
| 04/02/2008 | CN101154880A Semiconductor device alleviating or preventing surge voltage |
| 04/02/2008 | CN101154807A Self-adaption route selection method for single-phase ground fault of power distribution network based on transient zero sequence current |
| 04/02/2008 | CN101154806A Route selection method for single-phase ground fault of two-phase TA power distribution network |
| 04/02/2008 | CN101154805A Power supply device having overvoltage cutoff function, image display device, and method of cutting off overvoltage |
| 04/02/2008 | CN101154804A Fan system and its protection system |
| 04/02/2008 | CN101154803A Protector for preventing burn-down of electric motor |
| 04/02/2008 | CN101154802A Detecting method for output loop high-voltage arc of double-high output transformer and its processing equipment |
| 04/02/2008 | CN101154799A Leakage current protecting circuit |
| 04/02/2008 | CN100379135C 电源电路 The power supply circuit |
| 04/01/2008 | US7352550 Method of detecting run-dry conditions in fuel systems |
| 04/01/2008 | US7352546 Motor overcurrent protection device |
| 04/01/2008 | US7352545 Compressor terminal fault interruption method and apparatus |
| 04/01/2008 | US7352544 Method and apparatus for providing a remedial strategy for an electrical circuit |
| 04/01/2008 | CA2406500C An over-voltage protection circuit for use in a charging circuit |
| 04/01/2008 | CA2313180C Motor winding contamination detector and detection |
| 03/27/2008 | WO2008035523A1 Back-gate voltage generator circuit, four-terminal back gate switching fet, and charge and discharge protection circuit using same |
| 03/27/2008 | US20080074910 Thyristor power converter filter for excitation applications |
| 03/27/2008 | US20080074909 Power Supply and Electronic Ballast with Voltage Clamping Circuit |
| 03/27/2008 | US20080074819 Protection circuit for power management semiconductor devices and power converter having the protection circuit |
| 03/27/2008 | US20080074812 DC common bus self-protection method and system |
| 03/27/2008 | US20080074811 Control device for soft starting and protecting overload of motor |
| 03/27/2008 | US20080074810 Apparatus and method for providing protection for a synchronous electrical generator in a power system |
| 03/27/2008 | US20080074809 Current meter |
| 03/27/2008 | US20080074088 High power permanent magnet alternator with improved controlled output |
| 03/27/2008 | US20080074086 Device For Regulating The Power Output Of An Electrical Generator In Motor Vehicles |
| 03/27/2008 | US20080074069 Protection arrangement of an electric motor |
| 03/27/2008 | US20080074064 Electric circuit providing protection from transients |
| 03/27/2008 | DE102007041140A1 Vorrichtung und Verfahren zur Detektion abnormaler Zustände eines Motors Apparatus and method for detecting abnormal states of a motor |
| 03/27/2008 | DE102007039820A1 FET-Überwachungs- und Schutzanordnung sowie Verfahren hierzu FET monitoring and protection arrangement and method therefor |
| 03/27/2008 | DE102006044344A1 Überspannungsschutzgerät Surge protection device |
| 03/27/2008 | DE102006043615A1 Obstacle i.e. jamming situation, detecting method for opening region of e.g. trunk lid opening, involves determining and analyzing actual reflectance coefficient, actual phase position and running time of light beam of opening region |
| 03/27/2008 | DE102006042917A1 Alternating current switch device for selective closing and opening of electrically conducting circuit, has two parallel connected branches for flow of current in each case and multiple switches are provided |
| 03/27/2008 | DE102006042383A1 Selective main line breaker switch has power inlet and power outlet and switch is brought through into opened position and into closed position by switch lock |
| 03/27/2008 | DE102006036569A1 Treiberschaltung eines Halbleiter-Leistungsschaltelementes Drive circuit of a semiconductor power switching element |