| 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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| 07/24/1984 | CA1171458A1 Static var generators |
| 07/19/1984 | WO1984002807A1 Direct current cable protection system |
| 07/19/1984 | WO1984002686A1 Short circuit protection apparatus |
| 07/10/1984 | US4459631 Transient over-voltage protection circuit |
| 07/03/1984 | US4458286 Electronic device having a high voltage breakdown protection circuit |
| 06/27/1984 | EP0112007A1 Gate turn-off thyristor failure detection circuit |
| 06/26/1984 | CA1169922A1 Circuit including an mos transistor whose gate is protected from oxide rupture |
| 06/19/1984 | US4455585 Car alternator electric power generator protected against transients due to battery disconnection |
| 06/19/1984 | US4455012 Remotely controlled valve |
| 06/19/1984 | CA1169534A1 Circuit interrupter with overtemperature trip device |
| 06/19/1984 | CA1169490A1 Propulsion motor control apparatus and method |
| 06/12/1984 | US4454503 Transistor fault indicator |
| 06/05/1984 | US4453193 Overcurrent protection for push-pull circuits |
| 06/05/1984 | US4453190 Method of short circuit protection of electrical three-phase machine and device therefor |
| 06/05/1984 | US4453117 Motor control apparatus with short term undervoltage motor mode saver |
| 06/05/1984 | US4453115 DC Motor control system |
| 06/05/1984 | US4452292 Automatic door opener |
| 05/30/1984 | EP0109629A1 Current ratio-differential relay |
| 05/29/1984 | US4451778 Short-circuit-resistant trigger circuit layout for an electrical consumer |
| 05/23/1984 | EP0109070A1 MOS type semiconductor device |
| 05/22/1984 | US4450497 Ultra-high-speed relay |
| 05/22/1984 | CA1167921A1 Static var generator |
| 05/22/1984 | CA1167918A1 Electrical equipment protective apparatus with energy balancing among parallel varistors |
| 05/22/1984 | CA1167910A1 Motor protection device |
| 05/15/1984 | US4449158 Input protection circuit for MIS transistor |
| 05/15/1984 | US4449080 Electric vehicle protection scheme |
| 05/15/1984 | CA1167552A1 Door operation control apparatus |
| 05/08/1984 | US4447841 Overcurrent protection circuit for a multiple output switching power supply and method therefor |
| 05/08/1984 | CA1167097A1 Programmable overload circuit |
| 05/01/1984 | US4446501 Circuit control system |
| 05/01/1984 | US4446500 Remote control circuit breaker circuit |
| 04/25/1984 | EP0106790A1 Method and apparatus for the localisation of a fault in a three-phase power line |
| 04/25/1984 | EP0106255A2 Protection against the frequent starting of an electric machine with a short-circuited rotor |
| 04/24/1984 | CA1166310A1 A.c. electricity power supply system and methods of and apparatus for load control thereon |
| 04/24/1984 | CA1166309A1 Thyristor valve for a high voltage convertor |
| 04/11/1984 | EP0105077A1 Protective device for asynchronous motors |
| 04/10/1984 | US4442396 Generator system with fault condition excitation |
| 04/04/1984 | EP0104883A2 Reactive load drive and surge protection |
| 04/03/1984 | US4441148 Power converting device and a protection device for the same |
| 04/03/1984 | CA1164983A1 Door operation control apparatus |
| 04/03/1984 | CA1164918A1 Automatic cut off device for electric motor feeding system, and use of said device |
| 03/27/1984 | US4439806 Short-circuit protection device for a DC control element |
| 03/27/1984 | US4439803 Power interruption device |
| 03/27/1984 | US4439801 Electrical load imbalance detection and protection apparatus |
| 03/21/1984 | EP0103182A1 Device for monitoring the valves of a power converter of an alternating voltage power converter |
| 03/21/1984 | EP0103151A2 Method of operating an electric-energy distribution installation |
| 03/20/1984 | US4438475 Ultra-high speed protective relay apparatus and method for providing single pole switching |
| 03/20/1984 | CA1164048A1 Monitoring device for the capacitor battery of a d-c filter circuit |
| 03/14/1984 | EP0102710A1 Protective relay system |
| 03/14/1984 | EP0102666A2 Method and apparatus for monitoring and protecting a semiconductor output device |
| 03/14/1984 | EP0102659A1 Washing machine motor speed control circuit |
| 03/13/1984 | US4437135 Semiconductor integrated circuit device |
| 03/13/1984 | US4436699 Carbon filters, detectors |
| 03/13/1984 | CA1163674A1 Automatic control for processing signals from an overheat monitor of a dynamoelectric machine |
| 03/06/1984 | US4435749 High frequency inverter fault protection system |
| 02/28/1984 | US4434390 Motor control apparatus with parallel input, serial output signal conditioning means |
| 02/22/1984 | EP0100852A1 Circuit arrangement for rising and lowering a motor-operated antenna |
| 02/21/1984 | CA1162632A1 Circuit interrupter with front panel numeric display |
| 02/14/1984 | US4432032 Auxiliary voltage snubber circuit |
| 02/14/1984 | US4432029 Protective means for series capacitors |
| 02/07/1984 | US4430683 Ground fault detecting device for use with a DC circuit |
| 02/07/1984 | US4430682 Protection circuit for d.c. motors |
| 02/07/1984 | US4430681 Overload protection arrangement for an electric motor, especially of a hand-held power tool |
| 01/31/1984 | US4429338 Earth contact monitoring device for a polyphase three-phase filter circuit |
| 01/25/1984 | EP0099233A2 Circuit control device |
| 01/25/1984 | EP0099093A2 Overvoltage limiter |
| 01/24/1984 | US4428023 Electronic protective circuit |
| 01/24/1984 | US4428016 Overload protected switching regulator |
| 01/24/1984 | US4428015 Overcurrent limiter circuit for switching regulator power supplies |
| 01/24/1984 | CA1161109A1 Protective circuits for converter-supplied d.c. motor |
| 01/24/1984 | CA1161104A1 Personnel protection circuit |
| 01/18/1984 | EP0098624A1 Process for detecting faults or fault direction in electrical lines and means for carrying it out |
| 01/18/1984 | EP0098523A2 Vacuum monitor for vacuum interrupter |
| 01/17/1984 | US4426671 Process and apparatus for the short-circuit protection of A.C. circuits |
| 01/17/1984 | US4426588 Weighting circuit for an electrical torque signal in a drilling machine |
| 01/17/1984 | CA1160724A1 Protection of certain electrical systems by use of ptc device |
| 01/17/1984 | CA1160701A1 Interrupter for multisection ac capacitors |
| 01/10/1984 | CA1160284A1 Transformerless fast current limiter with symmetry correction for a switched-mode power supply |
| 01/10/1984 | CA1160283A1 Method and device for controlling a high-voltage d-c (hvdc) transmission installation with a short coupler |
| 01/04/1984 | EP0097586A1 Overload protective arrangement for a constant field DC motor |
| 01/04/1984 | EP0097321A2 Protective relay with second harmonic suppression |
| 12/27/1983 | CA1159512A1 Differential fault current protection of a multiprocessor controlled electric power generating system |
| 12/21/1983 | EP0096601A1 Functional low-voltage power distribution block |
| 12/20/1983 | CA1159103A1 Series capacitor protection with gapless arrestor blocks |
| 12/13/1983 | US4420787 Water pump protector |
| 12/13/1983 | US4420786 Polarity guard circuit |
| 12/13/1983 | CA1158711A1 Alarm and control system for high voltage capacitor bank |
| 12/07/1983 | EP0095956A1 Method of measuring the distance of a fault on a line, taking into account the distributed capacitances |
| 12/07/1983 | EP0095525A2 An electronic relay and protector for single phase hermetic compressors |
| 12/06/1983 | US4419621 Monitoring system for the capacitor batteries of a three-phase filter circuit |
| 11/23/1983 | EP0094697A1 Process for limiting the opening currents of the circuit breakers in a high-voltage switchgear, and application of the process |
| 11/23/1983 | EP0094685A2 Charge control microcomputer arrangement for vehicle |
| 11/22/1983 | CA1157512A1 High voltage direct current transmission apparatus |
| 11/15/1983 | US4415943 Equipment protector and energy saving apparatus |
| 11/15/1983 | CA1157098A1 Circuit for monitoring the voltage stress of a capacitor |
| 11/08/1983 | US4414602 Current director and interface circuit for a transformer relay |
| 11/08/1983 | US4414599 Arrester and a semiconductor circuit arrangement with a protection device including the same |
| 11/01/1983 | US4413325 Methods and apparatuses for determining the temperature of an asynchronous motor |
| 11/01/1983 | US4413213 Electronic motor protection for variable speed motors |
| 10/26/1983 | EP0092404A2 Fold-back power supply |