| 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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| 05/21/2003 | CN1419326A Asynchronous method TA saturation detected relay protection method |
| 05/21/2003 | CN1109391C 半导体集成电路器件 The semiconductor integrated circuit device |
| 05/20/2003 | US6567256 Dual protective relay for power systems |
| 05/20/2003 | US6567253 Apparatus to sense a silicon controlled rectifier short circuit |
| 05/20/2003 | US6567252 Protection circuit for a power supply unit and respective power supply unit |
| 05/20/2003 | US6566995 Protective element |
| 05/20/2003 | US6566965 PLL circuit including a DC power source alarm |
| 05/20/2003 | US6566828 Movable barrier operator having force and position learning capability |
| 05/20/2003 | US6564568 Refrigerating compressor control circuit |
| 05/20/2003 | CA2412151A1 Protection relay for double circuit power lines |
| 05/15/2003 | US20030090919 Device for protecting loads supplied by an alternator |
| 05/15/2003 | US20030089122 Refrigerating compressor control circuit |
| 05/14/2003 | EP1311047A2 Method of safety-oriented monitoring the rotational speed of a controlled drive motor |
| 05/14/2003 | EP1310033A1 Circuit arrangement for protecting a battery from exhaustive discharge |
| 05/14/2003 | EP1310031A1 Instant tripping device for short circuits in electrical dc and ac networks of surface and underwater vessels, especially combat vessels, and offshore installations |
| 05/14/2003 | EP1310030A1 Method for controlling and adjusting a motor-driven adjusting device |
| 05/14/2003 | EP1135974B1 Electronic transformer for lighting |
| 05/14/2003 | CN1417915A Circuit for continuous current-limiting point regulation and temperature protection of switching power source |
| 05/14/2003 | CN1417914A Automatic control protector for motor of pumping unit in intermittent work mode |
| 05/14/2003 | CN1108655C 充放电控制电路 Charge and discharge control circuit |
| 05/14/2003 | CN1108654C Zero-sequence current motor protecting circuit with power direction element |
| 05/13/2003 | US6563316 Magnet arrangement comprising an actively shielded superconducting magnet coil system and an additional current path for stray field suppression in case of a quench |
| 05/13/2003 | US6563292 Charge/discharge protection circuit with latch circuit for protecting a charge control FET from overheating |
| 05/13/2003 | US6563279 Power window system with control unit for detecting foreign object caught in car window |
| 05/08/2003 | WO2003038984A1 Power supply |
| 05/08/2003 | WO2003038968A1 Method for monitoring the reversing process of electrically actuatable units |
| 05/08/2003 | US20030086224 Circuit breaker for detecting an excessive voltage and tripping responsive thereto |
| 05/08/2003 | US20030086218 Protection system for protecting a poly-phase distribution transformer insulated in a liquid dielectric, the system including at least one phase disconnector switch |
| 05/08/2003 | US20030085752 Charge pump with current limiting circuit |
| 05/07/2003 | EP1308803A1 Power supply diagnostic system |
| 05/07/2003 | EP1183763B1 An electrical machine winding ground-fault protection system |
| 05/07/2003 | EP0935834B1 System and related methods for detecting and measuring the operational parameters of a garage door |
| 05/07/2003 | CN2549649Y Special variable transformer for cooker hood against charge evasion |
| 05/07/2003 | CN2549639Y High voltage and large current safety device on wire distibutor |
| 05/07/2003 | CN2549638Y High voltage and large current safety device on wire distributor |
| 05/07/2003 | CN2549636Y Electromagnetic power transformer/motor high and low voltage comprehensive protective circuit breaker |
| 05/02/2003 | EP1306511A1 System and method for optimizing the control program of a window-lifting device with anti-jam protection |
| 05/01/2003 | WO2003036784A1 Rectifying circuit |
| 05/01/2003 | WO2003036774A1 Method of detecting obstructions caused by electric windows and similar devices using current ripple |
| 05/01/2003 | US20030081364 Crossover fault classification for power lines with parallel circuits |
| 05/01/2003 | US20030079932 Steering angle ratio control system and method |
| 04/30/2003 | DE10137875C1 Lade/Entlade-Schutzschaltung Charge / discharge protection circuit |
| 04/30/2003 | CN2548345Y D.C. motor overload protector |
| 04/30/2003 | CN2548344Y A.C. contactor for air conditioner |
| 04/30/2003 | CN2548343Y Generator stator inner-cooled water-break automatic load-limiting protection apapratus |
| 04/30/2003 | CN1415131A Method and circuit for using polarized device in AC applications |
| 04/30/2003 | CN1414677A Electric machine protective apparatus |
| 04/30/2003 | CN1414676A Selective generator stator single phase grounding protective method |
| 04/30/2003 | CN1107367C Battery protection system |
| 04/29/2003 | US6556778 Active current-limiting control for dc motor speed regulation |
| 04/29/2003 | US6556403 Protective element |
| 04/29/2003 | US6556401 Circuit arrangement for overload protection |
| 04/29/2003 | US6556396 Power generation system, and method for installing the same |
| 04/29/2003 | US6555982 Method and system for detecting an object in the path of an automotive window utilizing a system equation |
| 04/29/2003 | US6555981 Method of detecting reverse rotation of direct-current motor by using back electromotive force |
| 04/29/2003 | US6555978 Automobile anti-pinching systems |
| 04/29/2003 | CA2293932C Power supply control device and method of controlling the same |
| 04/24/2003 | US20030076642 Over-voltage protection circuit |
| 04/24/2003 | US20030076112 Differential protective method |
| 04/24/2003 | US20030076073 Circuit configuration for protecting a battery against deep discharge |
| 04/23/2003 | EP1304785A1 Protection for a polyphase distribution transformer immersed in a dielectric fluid, comprising a interrupter-disconnect switch |
| 04/23/2003 | EP1304276A1 Steering angle ratio control system and method |
| 04/23/2003 | EP1303901A1 Thermal protection circuit for high output power supplies |
| 04/23/2003 | CN2547049Y Electric drill source with the purpose of anti-misdrilling underground metal pipeline |
| 04/23/2003 | CN2547048Y Two-phase voltag protector for vehicle engine |
| 04/23/2003 | CN1412907A Phase fault, low-voltage and over voltage breaking protection circuit |
| 04/22/2003 | CA2409260A1 Protection system for a liquid dielectric polyphase distribution transformer having at least one phase disconnect switch |
| 04/22/2003 | CA2374407C Direct current motor safety circuits for fluid delivery systems |
| 04/17/2003 | WO2003032460A1 Motor control circuit overcurrent protection |
| 04/17/2003 | US20030074147 Line fault protection unit for an electrical power system |
| 04/17/2003 | US20030072120 Electrical resource device and load driving device |
| 04/17/2003 | US20030071633 Bus fault protection unit for an electrical power system |
| 04/17/2003 | US20030071591 Three-phase motor protector apparatus |
| 04/16/2003 | EP1303021A2 Electronically controlled, variable-speed motor |
| 04/16/2003 | EP0995252B1 Self-sourcing, isolated zone selective interlocking system for use with electronic trip circuit breakers |
| 04/16/2003 | CN2545738Y Automatic protection and failure warning device of power amplifier |
| 04/16/2003 | CN2545737Y Mine intelligent integral protector for motor |
| 04/16/2003 | CN1411116A Generator stator single phase grounding protection method |
| 04/15/2003 | US6548989 Method and circuit for using polarized device in AC applications |
| 04/15/2003 | US6548988 Method and circuit for using polarized device in AC applications |
| 04/15/2003 | US6548979 Collision monitoring system |
| 04/15/2003 | US6548974 Method for monitoring and influencing an electric motor |
| 04/15/2003 | US6548206 In-situ short-circuit protection system and method for high-energy electrochemical cells |
| 04/15/2003 | CA2359129A1 Bus fault protection unit for an electrical power system |
| 04/10/2003 | WO2003030327A1 Device for limiting the temperature of the rotor field winding of a rotary electric machine and a device for charging a battery equipped with one such control device |
| 04/10/2003 | WO2002097947A3 Method for closing a motor driven window |
| 04/10/2003 | WO2002086270A3 Method and apparatus for facilitating control of a movable barrier operator |
| 04/10/2003 | US20030067727 Over voltage and surge voltage preventing circuit |
| 04/10/2003 | US20030067725 Distributed monitoring and protection system for a distributed power network |
| 04/10/2003 | US20030067724 Power generation system, and method for installing the same |
| 04/10/2003 | US20030067723 Apparatus and method of detecting ground fault in power conversion system |
| 04/09/2003 | EP1300937A2 Air conditioning device |
| 04/09/2003 | EP1300749A1 System and method for adjusting communications over signal lines |
| 04/09/2003 | EP1299782A2 Method for operating an electrical drive unit |
| 04/09/2003 | CN2544447Y Temp. protector for stepping motor |
| 04/09/2003 | CN1105411C Electric power system protection and control system and method, and storage medium for program module |
| 04/08/2003 | US6545849 Instantaneous fault detection circuit method and apparatus |
| 04/03/2003 | WO2003028184A1 Drive arrangement |
| 04/03/2003 | US20030064257 Secondary batteries having a protective circuit |
| 04/03/2003 | US20030063900 Linear electric motor controller and system for providing linear speed control |