| 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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| 02/26/2003 | CN1399380A Discrimination method for low-frequency resonant protection of parallel reactor |
| 02/25/2003 | US6525506 Current limit circuit of inverter refrigerator |
| 02/25/2003 | US6525499 System for controlling vehicle power sliding door |
| 02/20/2003 | US20030036821 Relaying method for protecting transformers |
| 02/19/2003 | EP0904549B1 Method for testing differential protection relays or differential protection relay systems |
| 02/19/2003 | CN1398365A Power supply device, transistor driving method, recording medium |
| 02/19/2003 | CN1398043A Overcurrent protecting circuit for voltage regulator |
| 02/19/2003 | CN1101888C Process for limiting exces force of electrically controlled aggregate actuated by external force |
| 02/18/2003 | US6522514 Photocoupler and connecting system using the same |
| 02/18/2003 | US6522513 Back-electromotive force protection circuit |
| 02/18/2003 | US6522094 Motor overload coil control and method of calculating operating temperature |
| 02/18/2003 | US6520279 Current-carrying control device and electric power steering apparatus |
| 02/18/2003 | CA2164241C Power closure panel control apparatus |
| 02/14/2003 | CA2397032A1 Arc prevention circuits |
| 02/13/2003 | WO2003012970A1 Method and apparatus for controlling power supplied to a motor |
| 02/13/2003 | US20030033119 Pole transformer load monitoring system using wireless internet network |
| 02/13/2003 | US20030030955 Over voltage detection circuit, and power source circuit, power supply system and electronic apparatus using the over voltage detection circuit |
| 02/13/2003 | US20030030950 Device for stopping a single-phase asynchronous motor with phase-shifting capacitor |
| 02/13/2003 | US20030030413 Protection method, control circuit, and battery unit |
| 02/13/2003 | US20030030072 Device for protecting electronic components |
| 02/12/2003 | EP1283596A1 Load control system having an overload protection circuit |
| 02/12/2003 | EP0938813B1 Quick-reset circuit for auxiliary power supply |
| 02/12/2003 | CN2535958Y A.C. contactor under-voltage protection circuit |
| 02/12/2003 | CN2535957Y 电动机保护器 Motor protection |
| 02/12/2003 | CN2535956Y Electric motor protector |
| 02/12/2003 | CN2535955Y 智能型电动机保护器 Intelligent motor protection |
| 02/12/2003 | CN2535954Y Intelligent A.C. circuit breaker |
| 02/12/2003 | CN2535953Y Intelligent A.C. contactor |
| 02/11/2003 | US6518731 Devices and methods for protection of rechargeable elements |
| 02/11/2003 | US6518729 Secondary battery protection circuit capable of reducing time for functional test |
| 02/11/2003 | CA2264596C Adaptive ground and phase fault detection for a power distribution system |
| 02/06/2003 | US20030027036 Protection apparatus for a storage battery |
| 02/06/2003 | US20030026599 Method and apparatus for controlling power supplied to a motor |
| 02/06/2003 | US20030025546 Protection circuit |
| 02/06/2003 | US20030025480 Charge/discharge protection circuit |
| 02/06/2003 | US20030025470 Movable barrier operator having force and position learning capability |
| 02/05/2003 | EP1282231A2 Load control system having an overload protection circuit |
| 02/05/2003 | EP1282211A2 Charge/discharge protection circuit |
| 02/05/2003 | CN2534716Y 自动断电保护器 Automatic power-off protection |
| 02/05/2003 | CN1395345A Power supply line with safety protective device |
| 02/04/2003 | US6515337 Input protection circuit connected to projection circuit power source potential line |
| 02/04/2003 | CA2268203C System interconnection device and method of designing same |
| 01/30/2003 | WO2003009310A2 Surge voltage protector for use in power transmission networks |
| 01/30/2003 | US20030020482 Protective and monitoring apparatus for a generator, and use of such a protective and monitoring apparatus |
| 01/30/2003 | US20030020435 Supercapacitor balancing method and system |
| 01/30/2003 | US20030020352 Generator for producing high voltages |
| 01/29/2003 | EP1280259A1 High-voltage Generator |
| 01/29/2003 | EP1280249A1 Protection and monitoring device for a generator and application of such a device |
| 01/29/2003 | EP1279212A1 Method for protecting a dc generator against overvoltage |
| 01/29/2003 | CN2533599Y Motor/compressor built-in protector |
| 01/29/2003 | CN1394373A Apparatus and method for detecting short circuit in lighting system |
| 01/28/2003 | US6512458 Method and apparatus for detecting failure in solar cell module, and solar cell module |
| 01/28/2003 | CA2071920C Automatic flashover protection for locomotive traction motors |
| 01/23/2003 | WO2003007467A1 Microprocessor for controlling the speed and frequency of a motor shaft in a power tool |
| 01/23/2003 | WO2003007450A1 Method and device for protecting a conductor when an electric arc is produced |
| 01/23/2003 | US20030016953 Electric heater with dual overheat limits |
| 01/23/2003 | CA2394408A1 Generator for producing high voltages |
| 01/22/2003 | EP1278283A2 Device for protecting electronic components |
| 01/22/2003 | EP1183764B1 An electrical machine winding ground-fault protection system |
| 01/16/2003 | WO2003005647A1 Relay-to-relay direct communication system in an electric power system |
| 01/16/2003 | WO2003005552A1 Power inverter |
| 01/16/2003 | WO2003005527A2 Voltage and current source selection system for use in the protection, automation and control of an electric power system |
| 01/16/2003 | US20030011952 Overcurrent protection circuit for voltage regulator |
| 01/16/2003 | US20030011335 Brushless dc machine |
| 01/15/2003 | EP1276201A2 Protection apparatus and protection process for a conductor |
| 01/15/2003 | EP1275184A2 Improved line current differential protective relaying method and relay for in-zone tapped transformers |
| 01/15/2003 | EP1275157A1 Device for protecting a photovoltaic module against hot spots and photovoltaic module equipped with same |
| 01/15/2003 | EP1024985B1 Circuit configuration to monitor a regulated output voltage in a motor vehicle |
| 01/15/2003 | CN2531564Y Digital electronic motor protector |
| 01/15/2003 | CN1391109A Test circuit for cell status |
| 01/14/2003 | US6507184 Methods and apparatus for differential current measurement in a three-phase power system |
| 01/09/2003 | WO2003003535A1 Compression of data in protection and control communications between protective relays in a power system |
| 01/09/2003 | US20030007851 Electronic controller for vehicular wheelchair access |
| 01/09/2003 | US20030007514 Relay-to-relay direct communication system in an electric power system |
| 01/09/2003 | US20030007299 Voltage and current source selection system for use in the protection, automation and control of an electric power system |
| 01/09/2003 | US20030006738 Method and circuit for using polarized device in ac applications |
| 01/09/2003 | US20030006728 Method ofr controlling the displacement of a part, displaced by an electromotor, of a closure device in a motor vehicle |
| 01/09/2003 | US20030006725 Fan motor |
| 01/09/2003 | CA2451815A1 Compression of data in protection and control communications between protective relays in a power system |
| 01/08/2003 | EP1274106A1 Supercapacity balancing method and device |
| 01/08/2003 | EP1274105A1 Supercapacity balancing procedure and system |
| 01/08/2003 | EP1273083A2 Differential protective relay for electrical buses with improved immunity to saturation of current transformers |
| 01/08/2003 | CN2530377Y Remote controlled energy saving self-control box |
| 01/08/2003 | CN2530376Y Carrier motor warning protector |
| 01/08/2003 | CN1389888A Overload protection device, electric compressor and refrigerating air-conditioner apparatus |
| 01/08/2003 | CN1098553C Method and arrangement for disconnecting consumers |
| 01/07/2003 | US6505127 Foreign material interference detection apparatus for open/closing members |
| 01/07/2003 | US6504484 Control method using power to prevent overheat inside of electric equipment |
| 01/07/2003 | US6504422 Charge pump with current limiting circuit |
| 01/07/2003 | US6504332 Method for limiting the closing force of movable components |
| 01/07/2003 | US6503647 Battery protection device and method of making same |
| 01/02/2003 | US20030002576 Apparatus and method for compression of data in protection and control communications between protective relays in a power system |
| 01/02/2003 | US20030002236 Current breaker circuit for storage devices, voltage detection circuit for storage devices and abnormality detection circuit |
| 01/02/2003 | US20030002235 Power line with safety device |
| 01/02/2003 | EP1271739A1 Calbration of the current to pinching force of an electric window with spring-tensioned cables |
| 01/02/2003 | EP1269618A1 Pwm frequency converter |
| 01/02/2003 | EP1269597A1 Switching method for an electromagnetic switching device and an electromagnetic switching device corresponding thereto |
| 01/02/2003 | EP1269596A1 Device for stopping a single-phase asynchronous motor with phase-shifting capacitor |
| 01/01/2003 | CN2529424Y Electric machine protector |
| 01/01/2003 | CN1388619A Failure protector for parallel power supply |