Patents
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)
05/2000
05/10/2000EP0999633A2 Earth-fault protection for electricity network
05/10/2000EP0999632A1 Stop control device for single-phase asynchronous motor with capacitor
05/10/2000EP0999631A1 Device for the protection of an electric motor and related method
05/10/2000EP0998776A1 Control circuit for a direct current motor
05/10/2000EP0919018B1 Method for the contactless approach of the lower stop position of a motor vehicle window operated by extraneous force
05/10/2000CN2377760Y Line fault sectional controller
05/10/2000CN2377759Y Intelligent energy-saving electric controller
05/10/2000CN2377688Y Linear adjustable voltage limit circuit arrangement for charging battery
05/10/2000CN1052351C A power window control system of an automobile
05/09/2000US6060863 Charge and discharge control circuit and chargeable power supply unit
05/09/2000US6060848 System for controlling a brushless electric motor
05/09/2000US6060185 Comprising a battery voltage-monitoring means, an overcharge-detecting means for sending out a charge-finishing signal when a voltage detected by the battery voltage-detecting means is higher than a preset value
05/04/2000DE19949783A1 Switch-off device for protecting motor vehicle circuit from overcurrent and excess temperature, controls power device based on output of buffer storing state based on current and temperature detector outputs
05/04/2000DE19848468A1 Verfahren zur elektronischen Überwachung und Steuerung des Öffnungs- und Schließvorgangs von elektrisch betriebenen Aggregaten A method for electronically monitoring and controlling the opening and closing process of electrically driven aggregates
05/03/2000EP0998007A1 Integrated circuit device for monitoring power supply
05/03/2000EP0998002A2 DC supply unit
05/02/2000US6058353 System and method for providing backup protection for circuit breaker failure
05/02/2000US6058320 Method and device for controlling the power source of a portable radio transceiver
05/02/2000US6056384 Failure diagnosing circuit and method
05/02/2000CA2077902C Arc diverter
04/2000
04/27/2000WO2000024106A1 Method for electronic surveillance and control of the opening and closing procedure for electrically operated units
04/26/2000EP0995252A1 Self-sourcing, isolated zone selective interlocking system for use with electronic trip circuit breakers
04/26/2000EP0995251A1 Solid state overload relay
04/26/2000CN2376119Y Fan-coil unit dual-motor variable speed protection
04/26/2000CN2376118Y Submersible pump three-phase electric machine open-phase and overload protection
04/26/2000CN1251694A Battery protection system
04/26/2000CN1051841C Method for detection of current in air conditioner
04/25/2000US6055141 Protective device for an electric motor corresponding process and drive device with an electric motor including said protective device
04/25/2000US6054841 Charge/discharge control circuit and chargeable electric power source apparatus
04/25/2000US6054824 Drive circuit with signal detection capability for a DC brushless fan motor
04/25/2000US6054823 Verification of fan operation
04/25/2000US6054822 Method of detecting overload state of on-vehicle electric motor and apparatus thereof
04/25/2000CA2015618C Automatic window/door system
04/20/2000WO2000022500A1 Protection system
04/19/2000CN2375021Y Overvoltage safety protector for electrical appliances
04/19/2000CN2375020Y Phase failure protective switch
04/19/2000CN2375019Y Open-phase protector for electric motor
04/19/2000CN1250965A Self-adaptive weighing differential protection method for bus
04/18/2000US6052016 Charge and discharge control circuit
04/18/2000US6051955 Protection circuit and battery unit
04/18/2000US6051945 Anti-pinch safety system for vehicle closure device
04/13/2000WO2000021179A1 Battery pack protection circuit
04/13/2000WO2000021175A1 A protective relay-based monitoring system of dc power within an electric power substation
04/13/2000WO2000020878A1 Motor winding contamination detector and detection
04/13/2000CA2312926A1 Battery pack protection circuit
04/12/2000EP0993092A2 Overcurrent protection with a voltage-controlled time-multiplier
04/12/2000EP0993008A1 A combination apparatus of distribution transformer and switch
04/12/2000EP0992098A1 Antisqueeze protection
04/12/2000CN2373935Y Three-phase phase-loss protector
04/12/2000CN2373934Y Three-phase motor power-off safety protector
04/12/2000CN2373933Y Motor control protector
04/12/2000CN2373932Y Sequential control power-off protector for electric motor
04/12/2000CN1250552A Circuit for blocking a semiconductor switching device on overcurrent
04/11/2000US6049144 Rechargeable battery with a built-in safety circuit for a portable electric apparatus
04/11/2000CA2108443C Negative sequence directional element for a relay useful in protecting power transmission lines
04/06/2000DE19843343A1 Monitoring method for motor relays for garage door drives, involves continued monitoring of current after movement, with other relay being switched on to stop motor if current is detected after movement end
04/05/2000EP0990293A1 Method for detecting phase failure in an asynchronous machine
04/05/2000CN2372816Y Accumulator protector
04/05/2000CN2372815Y Multifunctional protector for ac electric motor
04/04/2000US6046896 DC-to-DC converter capable of preventing overvoltage
04/04/2000US6046893 Programmable electronic current limiter
04/04/2000US6046569 Safety method and apparatus for resistive start of electromotors
04/04/2000US6046514 Bypass apparatus and method for series connected energy storage devices
03/2000
03/30/2000WO2000017982A1 Method and arrangement for electrically controlling and regulating the movement of an electrically operated aggregate of a motor vehicle
03/30/2000DE19939861A1 Load control system for drive unit has driver circuit stopping operation of drive unit on basis of output signal from determination unit indicating short-circuit of signal input
03/30/2000DE19842444A1 Überspannungsabschaltung Overvoltage shutdown
03/29/2000EP0988687A1 A method for communication between a low potential level and a valve located on high voltage potential in a high voltage converter station as well as a device for such a communication
03/29/2000EP0988685A1 Supplemental battery overcharge protection device
03/29/2000EP0988678A1 Method and device for controlling a sliding or lifting sun roof device
03/29/2000EP0988677A1 Safety device for a drive mechanism
03/29/2000EP0988676A1 Overvoltage protection circuit for a generating system
03/29/2000CN2371713Y Induction motor protector
03/29/2000CN1249076A Motor reversing circuit
03/28/2000US6043620 Method for moving a power-operated closure part
03/28/2000US6042513 Non destructive runaway protection for an electric motor
03/23/2000WO2000016429A1 Battery over-discharge protection
03/22/2000EP0987807A2 Fault protection apparatus
03/22/2000EP0987806A2 Excess voltage switch-off circuit
03/22/2000EP0986889A1 Residential protection service center
03/22/2000CN1050717C Method and apparatus for controlling invertor
03/21/2000US6040988 Converter with DC voltage intermediate circuit and method for operating such a converter
03/21/2000US6040972 Protection device for communication
03/17/2000CA2282624A1 Fault protection apparatus
03/16/2000WO2000014846A1 Drive device and method for moving a vehicle part
03/16/2000WO2000014845A1 Drive device and method for moving a vehicle part
03/16/2000WO2000014844A1 Drive device and method for moving a vehicle part
03/16/2000WO2000014843A1 Drive device and method for moving a vehicle part
03/16/2000DE19840164A1 Antriebsvorrichtung und Verfahren zum Verstellen eines Fahrzeugteils Drive device and method for adjusting a vehicle part
03/16/2000DE19840163A1 Antriebsvorrichtung und Verfahren zum Verstellen eines Fahrzeugteils Drive device and method for adjusting a vehicle part
03/16/2000DE19840162A1 Antriebsvorrichtung und Verfahren zum Verstellen eines Fahrzeugteils Drive device and method for adjusting a vehicle part
03/16/2000DE19840161A1 Antriebsvorrichtung und Verfahren zum Verstellen eines Fahrzeugteils Drive device and method for adjusting a vehicle part
03/15/2000EP0985242A1 Overcharge protection device and methods for lithium-based rechargeable batteries
03/15/2000CN2369393Y Automatic motor protector
03/15/2000CN1050475C Power generating equipment for vehicle
03/15/2000CN1050457C 电路保护装置 Circuit protection devices
03/14/2000US6037745 Battery charger with monitor and protection circuits
03/14/2000CA2133360C Inductively activated control and protection circuit for refrigeration systems
03/09/2000WO2000013304A1 Method for limiting an electric current passing through an electrical component and limiting device
03/09/2000WO2000013282A1 Electric circuit
03/09/2000DE19838411A1 Method to identify faults of electric operating device; uses active power, distorting and displacement wattless powers, unsymmetrical actual and differential powers