| 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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| 02/13/2008 | CN101123356A Charging and discharging control circuit and charging type power supply device |
| 02/13/2008 | CN101123349A Island effect detection method based on active frequency deviation and its device |
| 02/13/2008 | CN101123348A AC motor unbalanced protection method based on unbalanced accumulation |
| 02/13/2008 | CN100369360C Built-in controller electric vehicle DC brush-less motor |
| 02/13/2008 | CN100369343C Garment vehicle idle power-off electricity-saving device |
| 02/13/2008 | CN100369342C High-voltage shunt reactor protecting method between turns |
| 02/12/2008 | US7330015 Power generation controller |
| 02/12/2008 | US7330014 Method and system for controlling power to be fed to electrical loads |
| 02/12/2008 | US7329967 Electronic control unit for car |
| 02/12/2008 | US7329966 Vehicle-mounted electrical generator control system enabling suppression of supply voltage spikes that result from disconnecting electrical loads |
| 02/07/2008 | WO2008016744A2 Overload prevention device for permanent magnet dc motors |
| 02/07/2008 | US20080031022 Dc power conversion circuit having self-auxiliary power and self-protection |
| 02/07/2008 | US20080030931 Field replaceable module for protection circuitry |
| 02/07/2008 | CA2657624A1 Overload prevention device for permanent magnet dc motors |
| 02/06/2008 | EP1884018A2 System and method for driving a power field-effect transistor (fet) |
| 02/06/2008 | EP1883880A2 Device, system, and method for providing a low-voltage fault ride-through for a wind generator farm |
| 02/06/2008 | CN201018435Y Explosion-proof type soft starter for mining |
| 02/06/2008 | CN201018409Y Overvoltage protection circuit of power factor corrector in power supply circuit |
| 02/06/2008 | CN201018406Y Harmonic suppression device for variable frequency energy-saving controller |
| 02/06/2008 | CN201018277Y Three-in-one lightning protection device dedicated for video monitoring system |
| 02/06/2008 | CN201018275Y Duplicate power supply loop network single phase earthing time sequence identification route selection device |
| 02/06/2008 | CN201018274Y DC-DC module output short-circuit protection circuit |
| 02/06/2008 | CN201018273Y Three-phase motor phase-lack protection and indication equipment of portable magnetic drill tapping machine |
| 02/06/2008 | CN201018272Y Ball mill motor starting protection equipment |
| 02/06/2008 | CN201018271Y Electric motor protection starter |
| 02/06/2008 | CN201018270Y Motor power supply protection analog failure diagnosis device |
| 02/06/2008 | CN201018269Y Fan and fan feed circuit with overtemperature rotation-stopping function |
| 02/06/2008 | CN201018262Y Low-voltage electric network remote distance short-circuit fault sensitive protection module |
| 02/06/2008 | CN201018259Y Protective equipment of contactor for preventing instant power-off |
| 02/06/2008 | CN101119035A Single unit protection circuit module and battery pack using the same |
| 02/06/2008 | CN101119026A High-power electric energy-saving device and control method for elevator |
| 02/06/2008 | CN101119025A Signal sample circuit for electronic type electric motor protective equipment |
| 02/06/2008 | CN101119024A Differential protection misoperation identifying method for power generation group |
| 02/06/2008 | CN101119023A Differential protection misoperation processing method for power generation group |
| 02/06/2008 | CN101119022A Rectifier transformer group transverse bracing differential current protection method and apparatus |
| 02/06/2008 | CN101119020A Terminal equipment charging overvoltage protective device and method |
| 02/06/2008 | CN101117097A Gate circuit transistor controlling series transformer type electrified railway dragging net pressure-regulating-apparatus |
| 02/06/2008 | CN100367661C Method for operating a wind power plant and method for operating it |
| 02/06/2008 | CN100367623C Electrical system for a ship |
| 02/06/2008 | CN100367617C Overload current protection apparatus |
| 02/06/2008 | CN100367616C Protective method of oscillaton water column type wave energy device turbine electric generator set |
| 02/06/2008 | CN100367615C Transformer longitudinal error protecting element with multiple side zero sequence ratio brake |
| 02/06/2008 | CN100367614C Transformer longitudinal error protecting element with maximum side zero sequence ratio brake |
| 02/06/2008 | CN100367613C Fault component transformer longitudinal protecting element with maximum side zero sequence ratio brake |
| 02/06/2008 | CN100367612C Fault component transformer longitudinal error protecting element with zero sequence ratio brake |
| 02/06/2008 | CN100367611C Tault component transformer longitudinal error protecting method with maximum side zero sequence ratio brake |
| 02/06/2008 | CN100367610C Fault component transformer longitudinal error protecting method with zero sequence ratio brake |
| 02/06/2008 | CN100367609C Transformer longitudinal error protecting element with multiple side zero sequence ratio brake |
| 02/06/2008 | CN100367608C Transformer longitudinal error protecting element with maximum zero sequence ratio brake |
| 02/06/2008 | CN100367607C Transformer longitudinal error protecting element with zero sequence ratio brake |
| 02/06/2008 | CN100367606C Transformer longitudinal error protective method with multiple side zero sequence ratio brake |
| 02/06/2008 | CN100367605C Transformer longitudinal error protecting method with maximum side zero sequence ratio brake |
| 02/06/2008 | CN100367604C Transformer longitudinal error protecting method with zero sequence ratio brake |
| 02/06/2008 | CN100367603C Maximum variable current zero sequence braking method for preventing transformer protection from malfunction |
| 02/06/2008 | CN100367602C Conversion split-phase zero-sequence braking method for preventing malfunction for transformer protection |
| 02/06/2008 | CN100367601C Split-phase zero sequence braking method for preventing transformer protection from malfunction |
| 02/06/2008 | CN100367600C Phase-splitting integrated zero-sequence brake method for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 02/06/2008 | CN100367599C Positive sequence differential flow integrated brake device for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 02/06/2008 | CN100367598C Positive sequence synthesized brake device for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 02/06/2008 | CN100367597C Maximum differential flow brake device for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 02/06/2008 | CN100367596C Phase-splitting brake device for preventing voltage transformer differential protection unwanted operation |
| 02/06/2008 | CN100367595C Static exciter inrush current inhibition method and apparatus |
| 02/06/2008 | CN100367594C DC to DC controller with inrush current protection |
| 02/05/2008 | US7327546 Power switching circuit with active clamp disconnect for load dump protection |
| 02/05/2008 | US7327545 Electric generation control device of electric generator for vehicle |
| 02/05/2008 | US7327130 Current sense method |
| 02/05/2008 | US7327053 Electronic power circuit |
| 02/05/2008 | US7326964 Light emitting diode package with protective function against electrostatic discharge |
| 02/05/2008 | CA2262199C Electrical switching apparatus employing interlocks for first and second trip functions |
| 01/31/2008 | WO2008013453A1 Mirror adjustment mechanism, wing mirror unit and method |
| 01/31/2008 | US20080025054 Method and apparatus providing protection for power converter |
| 01/31/2008 | US20080024941 Method and apparatus for operating electrical machines |
| 01/31/2008 | US20080024940 Overload prevention device for permanent magnet dc motors |
| 01/31/2008 | US20080024939 Communication system for hazardous environments |
| 01/31/2008 | US20080024087 System and Method for Starting a Wound Rotor Motor |
| 01/31/2008 | US20080024084 Linear electric motor controller and system for providing linear control |
| 01/31/2008 | US20080024080 Motor protection system |
| 01/31/2008 | US20080024077 Portable Linear Actuator and a Method of Limiting the Maximum Force of a Motor of Such an Actuator |
| 01/31/2008 | DE102006016779B4 Verfahren zur Erkennung einer Lüfterstörung und Vorrichtung zur Durchführung eines derartigen Verfahrens A method for detecting a fan failure and apparatus for carrying out such a method |
| 01/30/2008 | CN201015187Y Control module group of ceiling fan motors |
| 01/30/2008 | CN201013620Y Electronic control automatic water pump |
| 01/30/2008 | CN101115380A Novel secondary cable shielding layer earthing mode |
| 01/30/2008 | CN101114825A Exponential curve type combined turn-off circuit |
| 01/30/2008 | CN101114725A Online passive maintenance device for high-capacity sealed lead-acid battery |
| 01/30/2008 | CN100365933C Electric window drive apparatus |
| 01/30/2008 | CN100365900C High-voltage transmission circuitry null sequence directional element for power system |
| 01/30/2008 | CN100365898C Anti-current mutual inductor saturated conventional difference current trajectory scanning and discrimination method |
| 01/30/2008 | CN100365897C Voltage regulator with high performance overcurrent protection |
| 01/30/2008 | CN100365541C Circuit and method for controlling a power cut-off protection circuit |
| 01/29/2008 | USRE40037 Electric power system protection and control system |
| 01/29/2008 | US7324876 System for remotely controlling energy distribution at local sites |
| 01/29/2008 | US7324315 Protection device |
| 01/29/2008 | US7323843 Method and device for treating signals for detection of stator and rotor errors in magnetic circuits in a synchronous machine |
| 01/24/2008 | WO2006138477A3 High voltage full bridge circuit and method for operating the same |
| 01/24/2008 | US20080019062 Electric motor control |
| 01/24/2008 | US20080019061 Electrostatic 512kV rotator and oscillator propulsion system |
| 01/24/2008 | US20080018309 Wind turbine generator apparatus with utility fault ride-through capability |
| 01/24/2008 | US20080018273 Rotor position detection circuit and motor driving device |
| 01/24/2008 | DE102007027727A1 Device for detecting fault current in electrical circuits in machines, has electromagnetic filter, which is connected with measuring device for detecting fault current |
| 01/23/2008 | EP1881333A1 Monitoring battery cell voltage |