| 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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| 09/10/1985 | CA1193316A1 Motor protection apparatus |
| 09/04/1985 | EP0153372A1 Self-driven proportional dc-dc converter with overcurrent protection |
| 09/03/1985 | US4539562 Load current monitoring device for detecting predetermined degree of change in load impedance |
| 09/03/1985 | US4538717 Control apparatus for a step drive |
| 08/28/1985 | EP0152579A1 Device for the short circuit protection of a converter with GTO thyristors |
| 08/27/1985 | US4538196 Protective relay apparatus and method for providing single-pole tripping |
| 08/27/1985 | US4538195 Three terminal current differential protective relay |
| 08/27/1985 | US4538039 Composite circuit breaker |
| 08/27/1985 | CA1192684A1 Ac elevator control apparatus |
| 08/20/1985 | US4536816 Thyristor apparatus employing light-triggered thyristors |
| 08/20/1985 | US4536686 Electric motor fault and dynamic braking protection system |
| 08/13/1985 | US4535378 Overcurrent detector for an inverter |
| 08/13/1985 | US4535377 For use with electric motors and generators |
| 08/13/1985 | US4535274 Driving circuit for brushless D.C. motor |
| 08/13/1985 | CA1191926A1 Overspeed/underspeed detector |
| 08/13/1985 | CA1191904A1 Method of detecting ground faults in a network for distribution of electric power and a device for carrying out the method |
| 08/07/1985 | EP0150911A2 Battery pack with electronic means for limiting current flow for powering an electrical device |
| 08/07/1985 | EP0150502A2 Electric circuit |
| 08/06/1985 | US4533901 Anticatching device for automatic doors or windows |
| 08/06/1985 | US4533888 Magnetic circuit control apparatus |
| 08/06/1985 | CA1191584A1 Remotely controlled valve |
| 08/06/1985 | CA1191560A1 Short-protected buffer |
| 07/30/1985 | US4532443 Parallel MOSFET power switch circuit |
| 07/30/1985 | CA1191204A1 Device for monitoring thyristors of high-voltage valve |
| 07/24/1985 | EP0149046A2 Control arrangement for circuit breaker |
| 07/24/1985 | EP0148941A1 Mechanically operated pressure switch having solid state components |
| 07/17/1985 | EP0148370A1 Fail-safe circuit for electronic circuit in automotive vehicle |
| 07/17/1985 | EP0148318A1 Safety circuit for motor-driven window lift assemblies for automobile vehicles and similar vehicles |
| 07/16/1985 | US4530025 Current ratio-differential relay |
| 07/16/1985 | US4530024 Computer-controlled system for protecting electric circuits |
| 07/16/1985 | US4529929 Method of detecting ground faults in a network for distribution of electric power and a device for carrying out the method |
| 07/10/1985 | EP0147695A2 Second Breakdown protection circuit for X-Ray generator inverter |
| 07/10/1985 | EP0147592A1 Device for monitoring the operational capacity of switching devices |
| 07/09/1985 | US4528611 Relay for pilot protection of electrical power lines |
| 07/09/1985 | US4528609 Method and apparatus for protecting superconducting magnetic energy storage systems during rapid energy dissipation |
| 07/09/1985 | US4528493 Detector for shorted rotating diode of a brushless alternator |
| 07/04/1985 | WO1985002949A1 Detector for shorted rotating diode of a brushless alternator |
| 07/04/1985 | WO1985002948A1 Apparatus and method for detecting a rotating rectifier fault |
| 07/02/1985 | US4527227 False recovery detection circuit for parallel or serial strings of thyristors |
| 07/02/1985 | US4527214 Power inverter with overload protection apparatus |
| 07/02/1985 | CA1189975A1 Input protection circuits for integrated circuit devices |
| 06/26/1985 | EP0146475A1 Protective device for an electrical motor |
| 06/25/1985 | US4525763 Apparatus and method to protect motors and to protect motor life |
| 06/25/1985 | US4525125 Pressure responsive pump control system having an alarm lamp |
| 06/19/1985 | EP0145221A1 Fast-acting spark-over detector |
| 06/18/1985 | US4524403 Washing machine motor speed control circuit |
| 06/18/1985 | US4524309 Safety control device of commutator motors |
| 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 |
| 06/06/1985 | WO1985002502A1 Detector for shorted rotating diode |
| 06/04/1985 | US4521894 Overspeed/underspeed detector |
| 06/04/1985 | US4521822 Current transformer protection device |
| 06/04/1985 | CA1188361A1 Voltage regulation and battery dissipation limiter circuit |
| 05/28/1985 | US4520417 Electrical monitoring systems |
| 05/28/1985 | US4520304 Three phase scaling current-to-voltage convertor |
| 05/22/1985 | EP0141819A1 Short-protected buffer circuit |
| 05/21/1985 | CA1187608A1 Current generating device, especially for the protection of volatile rams |
| 05/21/1985 | CA1187593A1 Interface circuit for a transformer relay |
| 05/15/1985 | EP0141624A2 Power converter |
| 05/14/1985 | US4517619 Protective relay system for a power system |
| 05/14/1985 | US4517502 Load monitoring circuit for electric motors |
| 05/14/1985 | CA1187146A1 Protection circuit |
| 05/09/1985 | WO1985002067A1 Switch current sensing with snubber current suppression in a push-pull converter |
| 05/08/1985 | EP0140209A1 Tapped transformer with a non solidly earthened neutral point |
| 05/07/1985 | US4516045 Electric power machine with protection against overspeed |
| 05/07/1985 | US4514989 Method and control system for protecting an electric motor driven compressor in a refrigeration system |
| 04/30/1985 | US4514670 Electric positioning motor control system, particularly automatic vehicle antenna extension system |
| 04/30/1985 | US4514646 Semiconductor integrated circuit device including a protective resistor arrangement for output transistors |
| 04/30/1985 | US4514643 Parallel valve rotary machine control system |
| 04/25/1985 | WO1985001841A1 Current source sine wave inverter |
| 04/25/1985 | WO1985001840A1 Pulse width modulated inverter for unbalanced and variable power factor loads |
| 04/25/1985 | WO1985001829A1 Apparatus for protecting superconductive device |
| 04/25/1985 | WO1985001773A1 Obstruction detection means |
| 04/24/1985 | EP0138157A1 Static leonard apparatus |
| 04/23/1985 | US4513344 Protective relay for power system |
| 04/23/1985 | US4513233 Pulse monitor circuit for use as a fan speed monitor |
| 04/16/1985 | US4511957 Power converter |
| 04/16/1985 | US4511832 Stepper motor door control apparatus and method |
| 04/09/1985 | US4510547 Multi-purpose compressor controller |
| 04/09/1985 | CA1185379A1 Integrated overload protection circuit |
| 04/03/1985 | EP0135672A1 Equalizing circuit for series-connected switches |
| 04/02/1985 | US4509102 Voltage controlled current switch with short circuit protection |
| 04/02/1985 | US4509088 Motor protector relay with memory of overload |
| 04/02/1985 | US4509067 Semiconductor integrated circuit devices with protective means against overvoltages |
| 04/02/1985 | US4508999 Short circuit protection apparatus |
| 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 |
| 03/26/1985 | US4507724 Pulse width modulated inverter for unbalanced and variable power factor loads |
| 03/20/1985 | EP0134505A1 High voltage direct current supply with overcurrent protection |
| 03/20/1985 | EP0134496A1 Rectifier |
| 03/19/1985 | US4506260 Ground assurance circuit |
| 03/19/1985 | CA1184246A1 Method and apparatus for controlling a turbo- generator set |
| 03/19/1985 | CA1184244A1 Protection system for immunizing an inverter system against a-c line voltage disturbances |
| 03/12/1985 | US4504881 Protective circuit for an electric motor |
| 03/12/1985 | CA1183935A1 Protective relay apparatus and methods for protecting electrical power transmission lines |
| 03/05/1985 | US4503477 Method and arrangement for protecting a thyristor switch of a pulse generator |
| 02/28/1985 | WO1985000933A1 Self-driven proportional dc-dc converter with overcurrent protection |
| 02/27/1985 | EP0133501A1 Leakage current fault interrupter |
| 02/26/1985 | US4502106 Current source sine wave inverter |
| 02/26/1985 | US4502033 Circuit control device |