| Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031) |
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| 02/07/1984 | CA1161938A1 Circuit breaker |
| 02/01/1984 | EP0099784A1 Electronic analogue circuit breaker tripping device for the protection against overintensities in an AC network |
| 02/01/1984 | EP0099461A1 Selective protection earth fault circuit for a high-voltage cable line |
| 01/31/1984 | US4429340 Bargraph displays for static trip circuit breakers |
| 01/31/1984 | US4429338 Earth contact monitoring device for a polyphase three-phase filter circuit |
| 01/25/1984 | EP0099265A1 Demodulator |
| 01/25/1984 | EP0099233A2 Circuit control device |
| 01/24/1984 | US4428021 Current monitoring apparatus |
| 01/24/1984 | US4428020 Power supply sensing circuitry |
| 01/24/1984 | US4428019 Ground fault circuit interrupting device with improved integrated circuit power supply |
| 01/24/1984 | US4427947 Phase discriminator circuit |
| 01/24/1984 | CA1161104A1 Personnel protection circuit |
| 01/18/1984 | EP0098721A2 Differential protection relay device |
| 01/18/1984 | EP0098598A1 Lightning arrester with leakage current detection |
| 01/18/1984 | EP0098438A1 Apparatus for detecting the imminent occurrence of an event |
| 01/17/1984 | US4426671 Process and apparatus for the short-circuit protection of A.C. circuits |
| 01/17/1984 | US4426670 Method of protection of electrical networks in the event of power transients by means of a surge arrester and a surge arrester for the performance of the method |
| 01/17/1984 | CA1160725A1 Load break switch with built-in ground fault sensing |
| 01/10/1984 | US4425596 Electric circuit breaker |
| 01/10/1984 | CA1160331A1 Solid-state load protection system having loss of phase sensing |
| 01/10/1984 | CA1160330A1 Solid-state load protection system having an improved inverse time delay circuit |
| 01/10/1984 | CA1160310A1 Digital data processing system with asynchronous sensing units |
| 01/03/1984 | CA1159943A2 Timing circuit for an overcurrent relay |
| 12/28/1983 | EP0096915A1 Power supply system comprising an a.c. voltage supply source, a load and a connecting cable between the source and the load |
| 12/27/1983 | US4423459 Solid state circuit protection system and method |
| 12/27/1983 | US4423458 Signal processing system for overload relay or the like |
| 12/21/1983 | EP0096049A1 A device for testing circuit breakers |
| 12/13/1983 | US4420805 Protective relaying system |
| 12/13/1983 | US4420789 Characteristic timer for a protective relay |
| 12/13/1983 | US4420788 Phase relay for AC power transmission line protection |
| 12/08/1983 | WO1983004347A1 Sectionaliser |
| 12/07/1983 | EP0095590A1 Method of monitoring a measured quantity |
| 12/06/1983 | US4419737 Setting device for protective control system |
| 12/06/1983 | US4419621 Monitoring system for the capacitor batteries of a three-phase filter circuit |
| 11/29/1983 | US4418395 Digital data processing system with a value setting unit for protecting and controlling an electric power system |
| 11/29/1983 | US4418374 Latch relay drive circuit |
| 11/23/1983 | EP0021288B1 Setting device for protective control system |
| 11/22/1983 | CA1157513A1 Motor protection circuit |
| 11/15/1983 | US4415968 Digital data processing system with asynchronous sensing units |
| 11/15/1983 | US4415944 Electrical apparatus |
| 11/15/1983 | CA1157098A1 Circuit for monitoring the voltage stress of a capacitor |
| 11/08/1983 | US4414601 Solid-state load protection system having a test feature |
| 11/08/1983 | US4414598 Regulated power supply |
| 11/08/1983 | CA1156722A1 Electrical short locator |
| 10/26/1983 | EP0092335A1 Apparatus for monitoring current levels in an A.C. transmission line |
| 10/25/1983 | US4412267 Time-delay current sensing circuit breaker relay |
| 10/25/1983 | US4412193 Resettable circuit breaker for use in ground fault circuit interrupters and the like |
| 10/19/1983 | EP0091606A2 Distance relay |
| 10/18/1983 | US4410925 Ground fault detector and shutdown system |
| 10/12/1983 | EP0091281A2 Circuit arrangement for detecting restoration of a momentary interruption |
| 10/11/1983 | US4409636 Device for detecting faulty phases in a multi-phase electrical network |
| 10/11/1983 | US4409635 Electrical power system with fault tolerant control unit |
| 10/11/1983 | US4409542 Monitoring system for an LC filter circuit in an AC power network |
| 10/11/1983 | CA1155212A1 Ground fault circuit breaker with ground fault trip indicator |
| 10/04/1983 | US4408246 Protective relay apparatus |
| 10/04/1983 | CA1154825A1 Triac-protected output circuit |
| 09/27/1983 | CA1154538A1 Battery backup circuit for an integrated memory device |
| 09/27/1983 | CA1154527A1 Circuit interrupter with digital trip unit and power supply |
| 09/27/1983 | CA1154526A1 Circuit interrupter with remote indicator and power supply |
| 09/20/1983 | US4405966 System for providing protection for a high voltage transmission line |
| 09/14/1983 | EP0088312A2 H-switch circuit with an overcurrent protection circuit |
| 09/07/1983 | EP0087700A1 System for detecting a predetermined phase relation between two input electrical quantities detected from an electric power system |
| 09/06/1983 | US4403268 Protective relay having an improved characteristic angle adjustment circuit |
| 09/06/1983 | US4403267 Electrically heated vacuum furnace with a fault detection system |
| 09/01/1983 | WO1983003035A1 Electronic current interrupter included in a dc distribution system |
| 08/30/1983 | US4401942 Monitoring system for a capacitor battery in an AC voltage network |
| 08/30/1983 | US4401055 Animal protective apparatus and method for protecting the animal from electrical power |
| 08/30/1983 | CA1153096A1 Commutation circuit for an hvdc circuit breaker |
| 08/23/1983 | US4400755 Overvoltage protection circuit |
| 08/23/1983 | CA1152627A1 Circuit interrupter with digital trip unit and potentiometers for parameter entry |
| 08/16/1983 | CA1152152A1 Shootthrough fault protection system for bipolar transistors in a voltage source transistor inverter |
| 08/16/1983 | CA1152151A1 Shootthrough fault protection system for a voltage source transistor inverter |
| 08/10/1983 | EP0085595A1 Differential protective device with inherent power supply |
| 08/10/1983 | EP0085223A1 Protection relay system |
| 08/09/1983 | US4398255 Polyphase angle estimator |
| 08/09/1983 | US4398232 Protective relaying methods and apparatus |
| 08/09/1983 | US4398188 Ground circuit voltage detector |
| 08/04/1983 | WO1983002692A1 Remotely controlled valve |
| 08/03/1983 | EP0084814A1 Earth leakage circuit breaker sensitive to fault currents with D.C. components |
| 08/02/1983 | CA1151279A1 Solid state trip unit for an electrical circuit breaker |
| 07/20/1983 | EP0083804A1 An AC current detection circuit for a rotor driving supply source of a rotating anode X-ray tube |
| 07/20/1983 | EP0083772A1 Protective relay apparatus |
| 07/19/1983 | US4394703 Load protecting arrangement |
| 07/19/1983 | US4394702 Power failure detection and control circuit |
| 07/19/1983 | US4394607 Control systems for gates and the like including a motor overload monitoring circuit |
| 07/12/1983 | US4393431 Overcurrent relay circuit |
| 07/12/1983 | US4393430 Multi-phase failure detector |
| 07/12/1983 | CA1149923A1 Circuit interrupter with digital trip unit and optically-coupled data input/output system |
| 07/12/1983 | CA1149922A1 Circuit interrupter with digital trip unit and means to enter trip settings |
| 07/12/1983 | CA1149921A1 Circuit interrupter with digital trip unit and style designator circuit |
| 07/12/1983 | CA1149920A1 Circuit interrupter with energy management functions |
| 07/12/1983 | CA1149919A1 Circuit interrupter with multiple display and parameter entry means |
| 07/12/1983 | CA1149871A1 Earth contact monitoring device for a polyphase three-phase filter circuit |
| 07/05/1983 | US4392174 Electric protection device |
| 06/28/1983 | US4390920 Switching device for the short-circuit and overload protection of a power switching circuit |
| 06/28/1983 | US4390919 Electronic surge arrestor |
| 06/28/1983 | US4390835 Fault identification in electric power transmission systems |
| 06/28/1983 | CA1149017A1 Rectifier system with failure alarm circuitry |
| 06/22/1983 | EP0082103A1 Method and arrangement for realising the detection of earth faults in an electric-energy distribution network |
| 06/22/1983 | EP0081661A2 Earth fault protection device |