| 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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| 06/21/1983 | CA1148605A1 Communications circuit line protector and method of making the same |
| 06/14/1983 | CA1148248A1 Single-phase fault detecting circuit breaker |
| 06/14/1983 | CA1148247A2 Ground fault circuit interrupter with grounded neutral protection |
| 06/14/1983 | CA1148246A1 Earth leakage current breaker |
| 06/09/1983 | WO1983002041A1 A device for testing circuit breakers |
| 06/08/1983 | EP0080857A1 A device for testing circuit breakers |
| 05/31/1983 | US4386384 Fault responsive protective device |
| 05/25/1983 | EP0079504A1 Protective relaying methods and apparatus |
| 05/24/1983 | US4385241 A.C. Electricity power supply system and methods of and apparatus for load control thereon |
| 05/18/1983 | EP0079271A1 Branch circuit breaker with a load control by an operator module |
| 05/11/1983 | EP0078620A1 Protective circuit for control unit power supply |
| 05/11/1983 | EP0078534A1 Device for controlling a disconnecting and reclosing cycle of a circuit breaker |
| 05/11/1983 | EP0078517A2 Protective relay system and sampling synchronizing method therefor |
| 05/10/1983 | CA1146251A1 Time delayed undervoltage relay |
| 05/03/1983 | CA1145837A1 Ground fault trip mode network for static trip circuit breakers |
| 04/26/1983 | US4381531 Alternating current motor protection system |
| 04/19/1983 | US4380785 Solid state trip unit for an electrical circuit breaker |
| 04/19/1983 | CA1144982A1 Static instantaneous overcurrent relay with low transient overreach |
| 04/13/1983 | EP0076697A1 Protection system for high voltage transmission lines |
| 04/12/1983 | US4379989 System for preventing damage to a battery charger due to application of a battery with wrong polarity |
| 04/06/1983 | EP0076157A2 Protection relay system |
| 04/06/1983 | EP0075931A2 Fail-safe system in a power regulation circuit for an automotive electronic circuit |
| 04/06/1983 | EP0075873A1 Protective relay system |
| 04/06/1983 | EP0075656A1 Electronic overcurrent protective device |
| 04/05/1983 | US4379317 Solid-state load protection system having loss of phase sensing |
| 04/05/1983 | CA1144272A1 Protective relaying apparatus |
| 03/30/1983 | EP0075348A1 Method and device for fault determination in electric lines according to the under-impedance principle |
| 03/30/1983 | EP0075296A1 Digital overcurrent disconnector |
| 03/29/1983 | US4378579 Alternately low and high input-impedance detector for use in a GFI |
| 03/29/1983 | CA1143784A1 Earth leakage protection devices |
| 03/22/1983 | US4377837 Circuit interrupter with overtemperature trip device |
| 03/22/1983 | US4377836 Circuit interrupter with solid state digital trip unit and positive power-up feature |
| 03/22/1983 | US4377833 Methods and apparatus for protecting electrical reactors |
| 03/22/1983 | CA1143443A1 Circuit for monitoring the square of the rms value of a periodic signal |
| 03/16/1983 | EP0074186A1 Current limiting device |
| 03/15/1983 | CA1143044A1 Apparatus for analyzing a physical quantity |
| 03/15/1983 | CA1143008A1 Impedance-measuring device for impedance protection |
| 03/08/1983 | US4376243 Arc detector for electric rod furnace |
| 03/08/1983 | CA1142587A1 System for predicting desynchronization of a synchronous machine |
| 03/02/1983 | EP0073032A2 On-load switch with fuse |
| 03/01/1983 | US4375661 Overvoltage protection circuit for a television |
| 03/01/1983 | US4375660 Ground isolation monitoring apparatus having a protective circuit |
| 02/22/1983 | US4375072 Self-calibrating overcurrent detector |
| 02/22/1983 | CA1141824A1 Protective apparatus for use with power lines |
| 02/17/1983 | WO1983000586A1 Protection device against over-voltage in an electric distribution network |
| 02/15/1983 | US4374346 Voltage detection circuits for a-c power supplies |
| 02/09/1983 | EP0071484A1 A secondary arc extinction device |
| 02/08/1983 | USRE31147 Ground fault and fire detector system |
| 02/08/1983 | CA1140989A1 Protective circuit for clutchless parallel generating system |
| 02/01/1983 | US4371947 ROM Controlled protective relay system for power transmission network |
| 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 | US4371832 DC Ground fault detector wherein fault is sensed by noting imbalance of magnetic flux in a magnetic core |
| 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 | US4370571 Relay device |
| 01/25/1983 | CA1140245A2 Method of and a protection relay for protecting electrical equipment |
| 01/12/1983 | EP0069655A1 High sensitivity differential protection device for the detection of earthed phase or neutral fault currents |
| 01/11/1983 | US4368500 Solid-state load protection system having an improved inverse time delay circuit |
| 01/11/1983 | US4368499 Electrical equipment protection apparatus |
| 01/11/1983 | CA1139418A1 Target circuit for circuit breaker static trip unit |
| 01/11/1983 | CA1139416A1 Fast recovery peak detector |
| 01/11/1983 | CA1139415A1 Multi-terminal protective relay system |
| 01/11/1983 | CA1139371A1 Apparatus for fault direction-comparison protection |
| 01/04/1983 | CA1138985A1 Long-time and short-time overcurrent signal processor for circuit breaker static trip units |
| 01/04/1983 | CA1138984A1 Rate sensing instantaneous trip mode network |
| 12/28/1982 | US4366521 Sequence filters for determining the symmetrical components of multiphase AC power systems |
| 12/28/1982 | US4366520 Differential transformer core for pulse currents |
| 12/28/1982 | US4366474 Identification of electric power network phases experiencing disturbances |
| 12/28/1982 | US4366433 Output voltage-drop detecting apparatus technical field |
| 12/22/1982 | EP0067620A2 Secondary arc extinction device |
| 12/22/1982 | EP0067563A1 Secondary arc extinction device |
| 12/21/1982 | CA1138025A1 Ground fault protective system requiring reduced current-interrupting capability |
| 12/14/1982 | US4363324 Electromedical apparatus |
| 12/14/1982 | CA1137613A1 Timing circuit for an overcurrent relay |
| 12/14/1982 | CA1137612A1 Electronic overcurrent detection and tripping circuit |
| 12/14/1982 | CA1137611A1 Method and apparatus for fault direction determination |
| 12/07/1982 | US4363066 Protective relay |
| 12/07/1982 | US4363065 Interphase unbalance detector for AC load circuit |
| 12/07/1982 | US4363064 Overcurrent protection system |
| 12/07/1982 | US4363063 Load break switch with built-in ground fault sensing |
| 12/07/1982 | CA1137203A1 Apparatus and system for protecting power distribution circuits against ground faults |
| 11/23/1982 | US4360853 Capacitor voltage and trip coil impedance sensor with high voltage isolation |
| 11/23/1982 | US4360851 Electronic circuit breaker |
| 11/23/1982 | US4360850 Intrinsically safe electrostatic assist units |
| 11/23/1982 | CA1136253A1 Shock hazard protective apparatus for high voltage system |
| 11/16/1982 | US4359626 Electric blanket heating control with capacitance sensing |
| 11/16/1982 | CA1135825A1 Multiple range inverse time overcurrent relay |
| 11/09/1982 | US4358810 Circuit breaker with alarm |
| 11/09/1982 | US4358809 Personal protection circuit |
| 11/03/1982 | EP0064016A1 Protection system against voltage occurrence on metallic structures |
| 11/02/1982 | US4357666 Digital distance relays |
| 11/02/1982 | US4357644 Ratio ground relays |
| 10/26/1982 | US4356526 Control circuit for resetting drawout circuit breaker UVR solenoid |
| 10/26/1982 | US4356481 Source voltage drop detecting circuit |
| 10/26/1982 | CA1134439A1 Time dependent master reset |
| 10/19/1982 | US4355341 Power protection circuit for transistors |
| 10/12/1982 | US4354216 Detector device for overcurrents and the loss of one or two phases |
| 10/12/1982 | US4354215 Selective safety device for the protection of a power distribution system |