| 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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| 06/25/1985 | US4525674 Circuit for synchronizing a switching power supply to a load clock |
| 06/20/1985 | WO1985002724A1 Shock hazard protection system |
| 06/19/1985 | EP0144660A1 Electric connection device, like a socket, for electric consumers |
| 06/18/1985 | US4524446 Signal quality monitor for protective relay system |
| 06/18/1985 | CA1189146A1 Monitoring system for an lc filter circuit in an ac power network |
| 06/18/1985 | CA1189145A1 Monitoring system for the capacitor batteries of a three-phase filter circuit |
| 06/18/1985 | CA1189144A1 Monitoring system for a capacitor battery in an ac voltage network |
| 06/12/1985 | EP0144273A1 Direct current power control circuit with condition signalling and protection against overload and short-circuiting |
| 06/11/1985 | US4523248 Safety circuit for a detachable connecting cable |
| 06/04/1985 | US4521692 Motor generator shutdown circuit for extended ridethrough |
| 05/22/1985 | EP0142022A1 Device for the interruption of currents |
| 05/21/1985 | CA1187592A1 Solid-state load protection system having a test feature |
| 05/21/1985 | CA1187591A1 Solid-state load protection system having electronic simulation of motor heating |
| 05/21/1985 | CA1187556A1 Method of protection of electrical networks in the event of power swinging by means of a swing arrester and a swing arrester for the performance of the method |
| 05/21/1985 | CA1187555A1 Protective relaying methods and apparatus |
| 05/15/1985 | EP0141352A2 Electrical connecting device, e.g. a socket, with a fault-current protective switch for electrical consumers |
| 05/14/1985 | US4517619 Protective relay system for a power system |
| 05/08/1985 | EP0140418A1 Active double-sided rectifier circuit |
| 05/08/1985 | EP0140093A2 Contactor with a control stage and excess current releaser |
| 05/07/1985 | US4516183 Overcurrent relay |
| 05/07/1985 | US4516035 Phase synchronization and control circuit |
| 05/02/1985 | EP0139301A2 Protection device for an electrical apparatus, with a switch being actuated by conductive liquids |
| 05/02/1985 | EP0139123A1 Protective relay system |
| 04/23/1985 | US4513343 Short circuit protector having fold-back trip point for solid state switching device |
| 04/23/1985 | US4513342 For protecting a load component operating by a flow of AC current |
| 04/23/1985 | US4513341 Overvoltage protection circuit for power supply |
| 04/23/1985 | US4513340 Power transmission line protective apparatus |
| 04/23/1985 | US4513339 Current detecting apparatus |
| 04/17/1985 | EP0137263A2 Overcurrent detection device |
| 04/16/1985 | US4511981 Protective relaying system |
| 04/16/1985 | CA1185652A1 Metal structure grounding safety system |
| 04/16/1985 | CA1185651A1 Ground isolation monitoring apparatus having a protective circuit |
| 04/09/1985 | US4510549 Power supply voltage monitor and control system |
| 04/09/1985 | US4510453 Frequency modulation or pulse modulation demodulator |
| 04/09/1985 | CA1185348A1 Control circuit for resetting drawout circuit breaker uvr solenoid |
| 04/03/1985 | EP0135540A1 A fault protection system for power supplies that use ferro-resonant transformers |
| 03/28/1985 | WO1985001355A1 Current detecting circuit |
| 03/27/1985 | EP0135440A1 Protective device for low-voltage line feeding elements of high-voltage generators for electrostatic coating, situated in an area containing inflammable mixtures |
| 03/27/1985 | EP0135110A2 Protective relay system and sampling synchronizing method therefor |
| 03/26/1985 | US4507713 Wide frequency multi-phase undervoltage detection circuit |
| 03/26/1985 | US4507701 Lighting arrester with leakage current detection |
| 03/26/1985 | US4507700 Protective relaying system |
| 03/26/1985 | US4507698 Inverter-type ballast with ground-fault protection |
| 03/20/1985 | EP0134505A1 High voltage direct current supply with overcurrent protection |
| 03/14/1985 | WO1985001157A1 Control circuit for uninterruptible power supply |
| 03/13/1985 | EP0133969A1 Solid state overcurrent detector |
| 03/13/1985 | EP0133968A1 Solid state overcurrent detector |
| 03/12/1985 | CA1183935A1 Protective relay apparatus and methods for protecting electrical power transmission lines |
| 03/05/1985 | US4503479 Electronic circuit for vehicles, having a fail safe function for abnormality in supply voltage |
| 02/28/1985 | WO1985000932A1 Phase relay for ac power transmission line protection |
| 02/27/1985 | EP0133501A1 Leakage current fault interrupter |
| 02/26/1985 | US4502086 Differential protective relay |
| 02/26/1985 | US4502084 Air conditioning system trouble reporter |
| 02/26/1985 | US4502033 Circuit control device |
| 02/26/1985 | US4502013 Input converting circuit |
| 02/26/1985 | CA1183252A1 Ground fault circuit interrupting device with improved integrated circuit power supply |
| 02/26/1985 | CA1183251A1 Ground fault circuit interrupting device with improved coordination of electronic circuit operation |
| 02/19/1985 | US4500837 Detection of DC content in an AC waveform |
| 02/19/1985 | CA1182893A1 Solid-state load protection system having ground fault sensing |
| 02/13/1985 | EP0133128A1 Overcurrent protection device |
| 02/13/1985 | EP0133089A1 Direct current power control circuit with overload and short circuit protection |
| 02/13/1985 | EP0132728A1 Device for controlling alternating high voltages |
| 02/05/1985 | CA1182168A1 Load protecting arrangement |
| 01/23/1985 | EP0131896A1 Industrial or domestic overvoltage protective device |
| 01/23/1985 | EP0131781A1 Frequency discrimination circuit |
| 01/23/1985 | EP0131718A1 Device for detecting a short circuit in the winding of the rotor of an electric machine |
| 01/22/1985 | US4495536 Voltage transient protection circuit |
| 01/15/1985 | US4494162 Starter thermal overload protection system |
| 01/15/1985 | CA1181131A1 Ratio ground relays |
| 01/15/1985 | CA1181130A1 Ratio ground relay |
| 01/08/1985 | US4493002 Electronic circuit breaker |
| 01/08/1985 | US4493000 Power on/off protect circuit |
| 01/02/1985 | EP0129624A1 Control circuit for a circuit interrupter |
| 01/02/1985 | EP0129623A1 Trip signal generator for a circuit interrupter |
| 01/02/1985 | CA1180380A Motor protection device |
| 01/01/1985 | US4491892 Electronic current overload protection installation |
| 12/27/1984 | EP0129454A1 Process and device for measuring the autonomy of a chopped power supply |
| 12/19/1984 | EP0128492A2 Method of measuring the D.C. level of the output of an A.C.-to-D.C. power converter |
| 12/18/1984 | US4488521 Monitoring means for combustion engine electric storage battery means |
| 12/12/1984 | EP0128084A1 Selective electronic trip device associated with a limiting circuit breaker |
| 12/05/1984 | EP0127302A1 Protective relay apparatus and method for providing single-pole tripping |
| 12/04/1984 | US4486803 Electronic system for high amperage circuit interruption apparatus |
| 12/04/1984 | CA1179005A1 Common suspension multi-line grounding protective relay |
| 11/27/1984 | US4485422 In an electronic power system |
| 11/27/1984 | US4485342 Load driving circuitry with load current sensing |
| 11/20/1984 | US4484246 Reclosing device for transmission line |
| 11/20/1984 | US4484245 Directional comparison blocking protective relay system |
| 11/20/1984 | US4484165 Circuit control device |
| 11/20/1984 | US4484136 Test set for transient protection devices |
| 11/14/1984 | EP0125043A1 Static type switch disconnect circuit and power distribution system including said circuit |
| 11/07/1984 | EP0030980B1 Stabilized dc power source |
| 11/06/1984 | US4481629 Abnormal signal detecting device |
| 10/31/1984 | EP0123129A1 Apparatus for detecting ground fault in variable-voltage variable-frequency power system |
| 10/31/1984 | EP0123126A1 Overvoltage protection device |
| 10/30/1984 | US4480283 Procedure and means for monitoring the phase sequence in a three-phase network |
| 10/24/1984 | EP0122492A2 Starting circuit for a switched mains power supply |
| 10/24/1984 | EP0122366A1 Apparatus for detecting ground fault in variable-voltage variable-frequency power system |
| 10/23/1984 | US4479084 Secondary arc extinction device |
| 10/16/1984 | US4477856 Relay spare circuit for a recloser relay |
| 10/16/1984 | US4477855 Protecting system for transmission lines |