| 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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| 03/16/1983 | EP0073943A1 Transistor fault indicator |
| 03/15/1983 | US4376971 System for protection against getting caught in automatically operable doors or windows, particularly of vehicles |
| 03/15/1983 | US4376968 Protection system for immunizing an inverter system against A-C line voltage disturbances |
| 03/08/1983 | US4376295 System for predicting desynchronization of a synchronous machine |
| 03/08/1983 | CA1142583A1 Control circuit for reducing field voltage in d.c. motors |
| 03/08/1983 | CA1142580A1 Protective circuit for zinc oxide varistors |
| 03/01/1983 | US4375659 Electronic circuit for the detection and analysis of normal zones in a superconducting coil |
| 02/22/1983 | CA1141822A1 Soft turn-on power |
| 02/22/1983 | CA1141821A1 Device for protection in the case of d.c. supply-voltage drop |
| 02/16/1983 | EP0071956A1 Installation apparatus |
| 02/15/1983 | US4373376 Method and apparatus for diagnosing overheating of an electric machine |
| 02/08/1983 | CA1140990A1 Low loss stabilizer |
| 02/08/1983 | CA1140989A1 Protective circuit for clutchless parallel generating system |
| 02/01/1983 | US4371909 High voltage converter apparatus having overvoltage protection circuits for thyristors |
| 02/01/1983 | US4371908 Digital protective relaying systems |
| 02/01/1983 | US4371907 Protective relay apparatus and methods for protecting electrical power transmission lines |
| 02/01/1983 | US4371906 Overspeed protective apparatus for a portable tool |
| 02/01/1983 | CA1140630A1 Generator voltage regulator |
| 01/26/1983 | EP0020349B1 Supervision device with a passive optical detector for electrical arcs in a circuit-breaker |
| 01/26/1983 | EP0015259B1 Process and device for detecting the position of a fault in an electric connection |
| 01/25/1983 | US4370692 Ground fault protective system requiring reduced current-interrupting capability |
| 01/25/1983 | US4370691 Protection apparatus for electric power transmission systems |
| 01/25/1983 | US4370690 Vacuum cleaner control |
| 01/25/1983 | CA1140206A1 Multi-series group capacitor bank protection equipment |
| 01/18/1983 | US4369492 Device for the protection of a converter which converts an impressed D-C current from a current source into an A-C current fed to a load |
| 01/18/1983 | US4369491 Protective circuitry for transistorized d-c/d-c converter |
| 01/18/1983 | US4369399 Control circuit for a motor-driven door operator |
| 01/18/1983 | US4369364 Monitoring device with an optical sensor for the detection of interference arcs in electrical systems |
| 01/12/1983 | EP0069357A1 Electronic circuit for the control of refrigerating apparatus |
| 01/11/1983 | CA1139415A1 Multi-terminal protective relay system |
| 01/11/1983 | CA1139371A1 Apparatus for fault direction-comparison protection |
| 01/05/1983 | EP0068934A1 Multipole moulded-case circuit breaker with a static tripping unit |
| 01/05/1983 | EP0068844A1 A protective device for a semiconductor integrated circuit |
| 01/05/1983 | EP0068405A2 Pulse signal processing circuit having a protection circuit against over-current breakdown |
| 01/04/1983 | US4367506 Protective system for electric motors |
| 01/04/1983 | CA1138985A1 Long-time and short-time overcurrent signal processor for circuit breaker static trip units |
| 12/28/1982 | US4366474 Identification of electric power network phases experiencing disturbances |
| 12/28/1982 | US4366433 Output voltage-drop detecting apparatus technical field |
| 12/15/1982 | EP0066950A1 Method of protecting a thyristor switch of a pulse generator |
| 12/15/1982 | EP0066651A2 Method and apparatus for controlling a turbo set |
| 12/15/1982 | EP0066639A1 Protection circuit for thyristors of an inverter in railway vehicles |
| 12/14/1982 | US4364032 Method and apparatus for diagnosing local overheating in a rotary electric machine |
| 12/14/1982 | US4364003 Electronic gate control |
| 12/14/1982 | US4363778 To detect eroneous stator phase sequences |
| 12/14/1982 | CA1137611A1 Method and apparatus for fault direction determination |
| 12/07/1982 | US4363062 Inductive voltage transformer and circuit therefor |
| 11/23/1982 | US4360773 Generator voltage regulator |
| 11/23/1982 | US4360772 Generator voltage regulator |
| 11/10/1982 | EP0064189A2 Expander-generator control system |
| 11/09/1982 | US4358809 Personal protection circuit |
| 11/09/1982 | CA1135333A1 Missed commutation detector and safeguard arrangement |
| 11/02/1982 | US4357645 System for detecting faulty SCR's |
| 11/02/1982 | US4357565 Control apparatus for variable-speed reversible motor |
| 11/02/1982 | CA1134912A1 Method and apparatus for fault and/or fault direction detection |
| 11/02/1982 | CA1134901A1 Apparatus for reducing subsynchronous frequencies in a power supply system |
| 10/28/1982 | WO1982003731A1 Generator system |
| 10/26/1982 | CA1134437A1 Method of and apparatus for enabling soft-failure of modular power converter systems, including rf generator systems, embodying switching components in the power conversion |
| 10/19/1982 | US4355342 Power circuit including means for automatically protecting a chopping transistor thereof |
| 10/13/1982 | EP0062446A1 Locating faults in power transmission systems |
| 10/12/1982 | US4354216 Detector device for overcurrents and the loss of one or two phases |
| 10/12/1982 | US4354214 Motor protection circuit |
| 10/12/1982 | CA1133582A1 Dynamic parallel inductive stabilizer for synchronous machines having torsional oscillations |
| 10/12/1982 | CA1133581A1 Fast-slow acting current limiter for inverter power supply |
| 10/07/1982 | EP0052630A4 Field coil fault detector for automotive alternator battery charging systems. |
| 09/29/1982 | EP0061343A2 An arrester device for protecting a thyristor valve arrangement from overvoltage |
| 09/29/1982 | EP0061254A1 Apparatus for and methods of monitoring partial discharge in high voltage electrical equipment |
| 09/28/1982 | US4352137 Methods and apparatus for fault detection |
| 09/28/1982 | US4352024 Expander-generator control system |
| 09/22/1982 | EP0060331A1 Short-circuit protection device for a direct current actuator |
| 09/21/1982 | US4351011 Directional wave detector apparatus |
| 09/14/1982 | US4349854 Power generation control system for vehicle generator |
| 09/14/1982 | US4349773 Circuit for protecting storage cells |
| 09/14/1982 | CA1131701A1 Control and protection system for an installation for the combined production of electrical and thermal energy |
| 09/08/1982 | EP0059416A1 Ground fault detecting device for use with a DC circuit |
| 09/07/1982 | US4348620 Magnetic field presetting circuit for an exciter field winding in an electrical propulsion system for traction vehicles |
| 09/07/1982 | CA1131319A1 Conduction limit protection arrangement for power transistor switch |
| 08/31/1982 | US4347539 Electrical equipment protective apparatus with energy balancing among parallel varistors |
| 08/31/1982 | US4347482 Amplifier equipped with circuit for preventing electrostatic breakdown |
| 08/31/1982 | US4347465 Circuit arrangement for power windows |
| 08/31/1982 | CA1130857A1 Switching regulator with high efficiency starting resistor circuit |
| 08/31/1982 | CA1130847A1 Fuse circuitry |
| 08/24/1982 | CA1130436A1 Parallel ac electrical system with differential protection immune to high current through faults |
| 08/24/1982 | CA1130423A1 Disconnect and overload bypass arrangement for a portable tool |
| 08/17/1982 | US4345291 Automatic sectionalizing system |
| 08/17/1982 | US4345288 Solid state over-current protective apparatus for a power circuit |
| 08/17/1982 | US4345199 Generator voltage regulator |
| 08/17/1982 | CA1129944A1 Solid state transformer differential relay |
| 08/10/1982 | US4343972 Hydraulic drive for electrical switches |
| 08/03/1982 | US4343027 Common suspension multi-line grounding protective relay |
| 08/03/1982 | CA1128985A1 Relay protection with functional value switching |
| 08/03/1982 | CA1128984A1 Relay protection device with a blocking function for each phase |
| 07/28/1982 | EP0056710A2 Recovery of energy from waste gas streams |
| 07/20/1982 | US4340921 HVDC Power transmission system with metallic return conductor |
| 07/20/1982 | CA1128177A1 Anti-kickback power tool control |
| 07/20/1982 | CA1128153A1 Capacitor protective system |
| 07/20/1982 | CA1128117A1 Protector means for electric motor |
| 07/19/1982 | EP0048261A4 Microcomputer controlled power tool. |
| 07/13/1982 | CA1127711A1 Shutdown circuit for a switching power supply |
| 07/07/1982 | EP0055552A2 Input protection circuit for an MIS transistor |
| 07/06/1982 | US4338553 Control system for a motor actuated door operating mechanism |