| 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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| 07/16/2003 | CN1114988C Protecting method for inrush current preventing resistor |
| 07/15/2003 | US6594131 Over current protection circuit of semiconductor switching device |
| 07/15/2003 | US6594127 Power generation system, and method for installing the same |
| 07/15/2003 | CA2230260C 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 |
| 07/10/2003 | WO2003056684A1 A control circuit |
| 07/10/2003 | WO2003056679A1 High speed transfer system |
| 07/10/2003 | US20030128485 Switching power supply unit |
| 07/10/2003 | US20030128035 Fault locator and selectivity sensor |
| 07/10/2003 | US20030128006 Protective device for an electric motor with sensor and evaluation unit |
| 07/09/2003 | EP1208626B1 Non-automatic power circuit breaker including trip mechanism which is disabled after closure of separable contacts |
| 07/09/2003 | CN2560150Y 农用油浸式电泵 Agricultural oil-immersed pump |
| 07/09/2003 | CN2560141Y Phase-defect protector of three-phase AC motor |
| 07/09/2003 | CN1429421A AC/DC chopper for power tool |
| 07/09/2003 | CN1114222C Apparatus and method for adjustment and coordination of circuit breaker trip curves through graphical manipulation |
| 07/08/2003 | US6590794 Apparatus and method for measuring current |
| 07/08/2003 | US6590752 Electronic control device |
| 07/08/2003 | US6590440 Low-side bidirectional battery disconnect switch |
| 07/08/2003 | CA2258375C Single phase compressor thermostat with start relay and motor protection |
| 07/03/2003 | WO2003055030A1 Method for detecting a defective cooling fan and for generating an alarm signal |
| 07/03/2003 | WO2003055028A1 Determining an operational limit of a power transmission line |
| 07/03/2003 | US20030123267 Method for detecting and identifying shorted thyristors |
| 07/03/2003 | US20030123224 Electronic controller modules and methods for making and using same |
| 07/03/2003 | US20030123205 Overcurrent protection circuit |
| 07/03/2003 | US20030123204 Protection of double circuit power lines |
| 07/02/2003 | EP1324455A1 Electric power transmission network state estimation |
| 07/02/2003 | EP1324454A1 Determining an operational limit of a power transmission line |
| 07/02/2003 | EP1324453A2 Ground relay system in a multiplex direct grounding system |
| 07/02/2003 | EP1324452A2 Overcurrent protection circuit |
| 07/02/2003 | EP0938772B1 Fault control circuit for switched power supply |
| 07/02/2003 | CN2559152Y Anti-excitation HF switch power output short-circuit protector |
| 07/02/2003 | CN1427520A Estimating of power transmission net state |
| 07/02/2003 | CN1113447C Device for safety disconnecting electrical load with especially high inductivity from electrical DC-voltage supply |
| 07/01/2003 | US6587338 Electronic controller modules and methods for making and using same |
| 06/26/2003 | WO2003052921A1 Method and circuit arrangement for protecting an electric motor from an overload |
| 06/26/2003 | WO2003052898A1 Transient voltage clamping circuit |
| 06/26/2003 | WO2003052897A1 Ground-fault protection coordinating system and ground-fault circuit interrupter with ground-fault protection coordinating unit |
| 06/26/2003 | US20030120440 Electric power transmission network state estimation |
| 06/26/2003 | US20030119355 Umbilical cable assembly |
| 06/26/2003 | US20030117755 Ground relay system in a multiplex direct grounding system |
| 06/26/2003 | US20030117753 Inverter protecting apparatus |
| 06/26/2003 | US20030116806 Input protection circuit connected to protection circuit power source potential line |
| 06/25/2003 | EP1322019A2 Distance protection method and device |
| 06/25/2003 | CN1426148A Carrier type motor alarm protector |
| 06/24/2003 | US6583975 Aircraft applicable ground fault circuit interrupter |
| 06/24/2003 | US6583527 Linear motor and apparatus and method for protecting it |
| 06/19/2003 | US20030111995 Method for determining the position of an element driven by the drive shaft of a direct current motor |
| 06/19/2003 | US20030111981 Apparatus and method for protecting synchronous generators against off-nominal frequency deviation and alternating forces excitation |
| 06/19/2003 | US20030111976 Detection of loss of cooling air to traction motors |
| 06/18/2003 | EP1320184A2 Linear electric motor controller and system for providing linear speed control |
| 06/18/2003 | EP1320165A2 Apparatus and method for protecting synchronus generators against off-nominal frequency deviation and alternating forces excitation |
| 06/18/2003 | EP1319264A1 Method for making allowance for the vehicle attitude on operating closing piece systems on motor vehicles |
| 06/18/2003 | CN2556829Y Protector for electric machine |
| 06/18/2003 | CN1424795A Protector for three phase windings devided ignition motor |
| 06/17/2003 | US6580590 Motor driver fault protector |
| 06/17/2003 | US6580370 Integrated circuit with protection device |
| 06/17/2003 | US6580242 Entrapment detection device of opening/closing member |
| 06/17/2003 | US6580241 Method of detecting pinching of object in power window device |
| 06/13/2003 | CA2652066A1 Linear electric motor controller and system for providing linear speed control |
| 06/13/2003 | CA2413865A1 Linear electric motor controller and system for providing linear speed control |
| 06/12/2003 | US20030107860 Instantaneous fault detection circuit method and apparatus |
| 06/12/2003 | US20030107856 ESD protection circuit |
| 06/12/2003 | US20030107350 Automotive alternator designed to attenuate field current rapidly |
| 06/11/2003 | CN2555576Y Two-staged protector of motor |
| 06/11/2003 | CN2555575Y Overload protector of electric tool |
| 06/11/2003 | CN1423388A Motor open-phase protection circuit |
| 06/05/2003 | US20030103306 Device for detecting failure of field effect transistor |
| 06/05/2003 | US20030102954 Overload protector with control element |
| 06/05/2003 | US20030102831 Method for determining the rotational position of the drive shaft of a direct current motor |
| 06/04/2003 | EP1317042A2 Charge/Discharge Protection Circuit |
| 06/04/2003 | CN1421974A Protection system for protecting three-phase distributing transformer with liquip-dielectric insulating and including phase isolating switch |
| 06/03/2003 | US6574081 DC-DC converter |
| 06/03/2003 | US6573677 Method of compensating for abrupt load changes in an anti-pinch window control system |
| 06/03/2003 | US6573676 Drive device and method for moving a vehicle part |
| 05/30/2003 | WO2003044921A1 Method for protecting parallelly operating alternating current generators from overvoltages |
| 05/30/2003 | WO2003044545A1 Method for the detection of an earth connection occurring in the vicinity of a neutral point in an electrical device, device for carrying out and application of said method |
| 05/29/2003 | US20030099075 Charge/discharge protection circuit |
| 05/29/2003 | US20030099024 Apparatus and method for energy recovery |
| 05/29/2003 | US20030098626 Permanent magnet induced electric machine and method for operating such a machine |
| 05/28/2003 | EP1315264A1 Method for earth fault monitoring of a power converter drive |
| 05/28/2003 | CN2553552Y Open-phase and over-current protection relay for three-phase motor |
| 05/28/2003 | CN2553551Y Phase failure protection automatic controller for three-phase electric motor |
| 05/28/2003 | CN2553550Y Beam-pumping unit electric machine automatic protector with self-resettingfunction |
| 05/28/2003 | CN1420590A Protection of double circuit power line |
| 05/28/2003 | CN1109878C Device and method for monitoring system environment of outdoor base station |
| 05/27/2003 | US6571182 Method and system for consolidating phase current samples |
| 05/27/2003 | US6571153 Electric power system protective control system, method of controlling electric power system protective control system and storage medium storing program module |
| 05/22/2003 | WO2003043159A1 Method for making secure a differential protection system of a set of bars in a gas insulation line, and emergency protection system using same |
| 05/22/2003 | WO2003043156A1 Control and protection module of an interrupter apparatus |
| 05/22/2003 | US20030095365 Semiconductor equipment |
| 05/22/2003 | DE20205496U1 Door control unit for motor vehicle, has two computer units linked through data interface to control window operation and other functions |
| 05/22/2003 | CA2463779A1 Control and protection module of an interrupter apparatus |
| 05/21/2003 | EP1313194A2 Protection of double circuit power lines |
| 05/21/2003 | EP1311912A2 System for protection zone selection in microprocessor-based relays in an electric power system |
| 05/21/2003 | EP1311785A1 Cryostat for electrical devices such as superconducting current limiters and electrical machines such as transformers, motors, generators and electrical magnets with a superconducting winding |
| 05/21/2003 | CN2552228Y Protector for ac circuit |
| 05/21/2003 | CN2552227Y Comprehensive protector for electric coal drill |
| 05/21/2003 | CN2552226Y Intelligent motor protector |
| 05/21/2003 | CN1419727A Electronic overload trip for a low-voltage circuit breaker |
| 05/21/2003 | CN1419726A Device for stoping a single-phase asynchronous motor with phase-shifting capacitor |
| 05/21/2003 | CN1419327A Generator industrial-frequency variation equantity rate difference protection method |