| 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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| 08/26/1986 | CA1210453A1 Apparatus for detecting ground fault in variable- voltage variable-frequency power system |
| 08/20/1986 | CN86100382A Static trigger break of automatic switch for sampling and locking high peak valve signal |
| 08/20/1986 | CN85203036U Safe adapter with protection function against leakage |
| 08/20/1986 | CN85102183A Motor protection controller |
| 08/20/1986 | CN85100422A Full automatic electric shock protective device |
| 08/19/1986 | US4607309 Apparatus for detecting arcing faults on low-voltage spot networks |
| 08/19/1986 | US4607174 Voltage detection circuit using threshold as reference voltage for detecting input voltage |
| 08/13/1986 | EP0190547A1 Device for monitoring and counting the response of a non-spark gap overvoltage arrester |
| 08/13/1986 | CN85205267U Integrated protector for lighting and signal in 127v for under coal mine |
| 08/13/1986 | CN85100969A Protector for power supply interruption and step out of a.c.electric machine |
| 08/12/1986 | US4605982 Control circuit for a circuit interrupter |
| 08/12/1986 | US4605981 Industrial or domestic overvoltage protective device |
| 08/06/1986 | EP0189493A1 GFI circuit breaker in the form of a connecting plug |
| 07/30/1986 | EP0189205A1 Protection circuit for integrated circuits driving power semiconductors |
| 07/30/1986 | CN86101599A Apparatus providing for leakage current protection |
| 07/30/1986 | CN85100977A Technical improvement for eliminating magnetism of generator and protection from overvoltage of rotation |
| 07/22/1986 | CA1208348A1 Ultra-high-speed relay |
| 07/22/1986 | CA1208347A1 Differential protective relay |
| 07/15/1986 | US4600962 Apparatus for monitoring and protecting a device against a plurality of fault conditions |
| 07/15/1986 | US4600961 Protective relay apparatus for detecting high-impedance ground faults |
| 07/09/1986 | CN85203626U 3-way circuit breaker for temperature adjusting, fireproof, electric shock protection |
| 07/09/1986 | CN85201314U Over-temperature protecting unit for winding of electric motor |
| 07/08/1986 | CA1207425A1 Residual differential device equipped with a surveillance system for the electronic power supply |
| 07/08/1986 | CA1207412A1 Protective circuit arrangement for a sheathed heating element |
| 07/03/1986 | WO1986003860A1 Circuit for monitoring the electric current supply of a consumer |
| 07/02/1986 | EP0186333A1 Method and apparatus for detecting surge in centrifugal compressors driven by electric motors |
| 07/02/1986 | EP0185976A1 Short circuit and overload monitoring device for proximity switches |
| 07/02/1986 | CA1207019A Motor control apparatus with true rms non sinusoidal negative sequence stator current protection mode |
| 07/01/1986 | US4598331 Ground fault current interrupter circuit with open neutral and ground lead protection |
| 06/24/1986 | US4597025 Minimum size, integral, A.C. overload current sensing, remote power controller |
| 06/18/1986 | CN85203338U Controller for preventing consuming electric source bypassing watthour meter |
| 06/17/1986 | US4595988 Electronic meter for measuring active and reactive energies in a three-phase network |
| 06/17/1986 | US4595894 Ground fault circuit interrupting system |
| 06/11/1986 | EP0183957A1 Differential current protection interrupter |
| 06/10/1986 | US4594634 High-voltage direct-current supply with over-current protection |
| 06/05/1986 | WO1986003350A1 Power systems |
| 06/04/1986 | EP0183108A1 Electric short circuit monitoring device for speed-controlled three phase current motors, including their leads |
| 06/04/1986 | EP0183073A1 Automatic reset device for power supplies which are cut-off after a disturbance |
| 06/03/1986 | US4593276 Overcurrent display device |
| 06/03/1986 | US4593180 Electric control apparatus with undervoltage protection |
| 05/28/1986 | CN85202046U Highly reliable and low energy consuming protector for electric appliances |
| 05/27/1986 | US4591992 Method and system for identifying the direction of a fault in a power line |
| 05/21/1986 | CN85203948U Overvoltage protector for household applianles |
| 05/20/1986 | US4590547 Active full-wave rectifier detector circuit |
| 05/20/1986 | US4590533 Overvoltage protective relay device |
| 05/14/1986 | EP0180955A1 Digital distance relay |
| 05/14/1986 | EP0180886A2 High-speed current limiting circuit breaker |
| 05/14/1986 | EP0151565A4 Phase relay for ac power transmission line protection. |
| 05/14/1986 | CN85202731U Breaking phase protective device commonly used in three-phase motor |
| 05/13/1986 | US4589052 Digital I2 T pickup, time bands and timing control circuits for static trip circuit breakers |
| 05/13/1986 | US4589048 Apparatus for detecting ground fault in variable-voltage variable-frequency power system |
| 05/13/1986 | US4589046 Apparatus for detecting ground fault in variable-voltage variable-frequency power system |
| 05/09/1986 | WO1986002786A1 Auto-reset circuit breaker |
| 05/07/1986 | EP0180506A1 Security device for a differential current-protection apparatus |
| 05/06/1986 | US4587442 Current threshold detector |
| 04/30/1986 | EP0179262A1 Protection method and circuit |
| 04/30/1986 | EP0179194A1 Device for protecting an electronic anti-skid system against overvoltage |
| 04/30/1986 | CN85203103U Low voltage directional electricity leakage relay for mine uses |
| 04/30/1986 | CN85200321U Three-phase ac power switch |
| 04/23/1986 | EP0179017A2 Tripping unit containing a microprocessor for a power circuit breaker |
| 04/22/1986 | US4584623 Electrical load protection device |
| 04/16/1986 | EP0177879A2 Circuit responsive to fault current |
| 04/15/1986 | US4581900 Method and apparatus for detecting surge in centrifugal compressors driven by electric motors |
| 04/10/1986 | CN85103168A Device prerenting a.c.contactor from contact metal welding, phase fault and noise |
| 04/09/1986 | EP0177305A2 Protection technique for an exposed conductor |
| 04/08/1986 | US4581711 Monitoring system for motors |
| 04/08/1986 | US4581540 Current overload protected solid state relay |
| 04/02/1986 | EP0176434A1 Device for the control of the interlocking of doors and other movable plates of an automotive vehicle |
| 04/02/1986 | EP0175843A2 Protective switching device against undervoltage in a motor vehicle electric circuit |
| 04/01/1986 | US4580186 Grounding and ground fault detection circuits |
| 03/26/1986 | EP0175120A1 Protecting device for an electric network |
| 03/25/1986 | US4578732 Ground fault circuit interrupter including snap-acting contacts |
| 03/18/1986 | US4577279 Fault locating device |
| 03/18/1986 | US4577254 Protective relay system |
| 03/18/1986 | US4577148 Surge arrester equipped for monitoring functions and method of use |
| 03/18/1986 | CA1202080A1 Current ratio-differential relay |
| 03/11/1986 | US4575673 Solid state electronic switch for motor vehicles |
| 03/11/1986 | US4575614 Pipe thawing apparatus |
| 03/11/1986 | CA1201796A1 Protective relay system |
| 03/11/1986 | CA1201766A1 Programmable motor protector |
| 03/05/1986 | EP0173165A2 Electric installation system with overvoltage protection |
| 03/05/1986 | EP0173083A1 Protective control method |
| 03/05/1986 | EP0173018A1 Electrical installation system with overvoltage protection |
| 03/05/1986 | EP0173017A1 Electrical installation system with overvoltage protection |
| 03/04/1986 | US4574324 Ground fault circuit interrupter |
| 03/04/1986 | CA1201522A1 Static overcurrent trip device to operate a circuit breaker in response of fault conditions in an alternating current net system |
| 02/25/1986 | US4572973 AC Current detection circuit for a rotor driving supply source of a rotating anode X-ray tube |
| 02/19/1986 | EP0171489A1 Overcurrent detection for a direct current generator with controlled rectifier |
| 02/18/1986 | US4571659 Static overcurrent trip device to operate a circuit breaker in response of fault conditions in an alternating current net system |
| 02/18/1986 | US4571658 Control circuit for a circuit interrupter |
| 02/11/1986 | US4570199 Protection circuit for voltage regulator of vehicle mounted generator |
| 02/11/1986 | CA1200594A1 Protective relay methods and apparatus |
| 02/05/1986 | EP0170138A1 Protective device for an electrical-power system |
| 02/04/1986 | US4568997 Resettable circuit breaker for use in ground fault circuit interrupters and the like |
| 02/04/1986 | CA1200276A1 Overvoltage protection device |
| 01/28/1986 | US4567539 Power interruption and brownout detector |
| 01/21/1986 | US4566053 Ground-fault protective relay |
| 01/21/1986 | US4566052 Overvoltage protection circuit for power supply |
| 01/15/1986 | EP0167884A2 DC supply unit with overcurrent protection |
| 01/08/1986 | EP0167079A1 Differential current protective interrupter |