| Patents for H02H 1 - Details of emergency protective circuit arrangements (5,580) |
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| 11/10/1992 | CA1310053C Relay control method and apparatus for a domestic appliance |
| 10/28/1992 | EP0510795A2 Timing window arc detection |
| 10/28/1992 | CN1018878B Solid-state trip device of molded case circuit breaker |
| 10/28/1992 | CN1018877B Solid-state trip apparatus comprise circuit of instantaneous trip independent of power voltage |
| 10/22/1992 | DE3643755C1 Switching fault protection device |
| 10/21/1992 | EP0509652A2 Direction sensing arc detection |
| 10/21/1992 | EP0509391A1 Protection system for electric circuits |
| 10/15/1992 | WO1992017941A1 Apparatus and method for eliminating phase skew in a multi-channel data acquisition system |
| 10/15/1992 | DE4112169A1 Fault current monitor e.g. for network with unearthed transformer secondary - has summing current converter supplying power to detector which supplies power to indicator with interruption button |
| 10/14/1992 | EP0508638A2 Field sensing arc detection |
| 10/14/1992 | EP0508177A2 Digital protection relay |
| 10/14/1992 | EP0507782A1 Electric arc and radio frequency spectrum detection. |
| 10/14/1992 | CN1065345A Microcomputer power failure control circuit |
| 09/30/1992 | EP0506320A1 Arc detector transducer |
| 09/30/1992 | EP0506319A2 Chaos sensing arc detection |
| 09/30/1992 | EP0506035A1 Method and device for detecting saturation in current transformers |
| 09/30/1992 | EP0505951A2 Microcomputer power failure control circuit |
| 09/29/1992 | US5151638 Motor overload indicating arrangement |
| 09/24/1992 | DE4100646A1 Identifying power fluctuations in mains supply - preventing undesired release of remote protective circuit breakers from transient deviations by generating blocking signal from measured impedance values |
| 09/22/1992 | US5150270 Transformer circuit and method with saturation prevention |
| 09/22/1992 | CA1307822C Floating negative automatic grounding switch |
| 09/17/1992 | DE4108049A1 Overcurrent protection device for AC or DC network - with ohmic current monitoring and semiconductor current interrupter activated when max. current is exceeded |
| 09/16/1992 | EP0504125A2 Fire protection circuit breaker for AC and DC current by detecting point contact currents |
| 09/02/1992 | EP0465507A4 Fault-powered power supply |
| 08/25/1992 | US5142234 Particle beam accelerator electromagnetic arc detection system |
| 08/14/1992 | WO1992015139A1 Surge suppression and fault containment circuit and packaging therefor |
| 08/11/1992 | US5138513 Arc preventing electrostatic power supply |
| 08/04/1992 | US5136456 Faulted current indicator with protection against temporary overloads and transients |
| 08/04/1992 | CA1305990C Molded case circuit breaker actuator-accessory module |
| 07/28/1992 | US5134362 Apparatus for detecting failure in power system |
| 07/21/1992 | US5132497 Magnetic shielding means for a current sensor of direct current switching apparatus |
| 07/02/1992 | DE4142471A1 Monitoring one or more electrical conductors for short circuits - scanning time course of current(s) at measuring point(s), and storing results in digital form |
| 07/01/1992 | EP0493238A1 Short circuit protection circuit for electronic switch |
| 06/23/1992 | US5124875 Overcurrent protection apparatus |
| 06/23/1992 | US5124518 High frequency heating apparatus having an output controlling function |
| 06/23/1992 | CA1304112C Molded case circuit breaker actuator-accessory module |
| 06/20/1992 | WO1992011676A1 Addressable relay module for circuit breakers |
| 06/17/1992 | CN1017091B Detetor for electronically detecting defect of cause loss for electric-energy in d.c. transmission lines |
| 06/16/1992 | CA1303715C Circuit interrupter apparatus with a battery backup and reset circuit |
| 06/09/1992 | US5121282 Arcing fault detector |
| 05/31/1992 | WO1992009899A1 Display for a circuit breaker trip unit |
| 05/31/1992 | CA2074264A1 Display for a circuit breaker trip unit |
| 05/30/1992 | WO1992010018A1 Fail-resistant solid state interruption system |
| 05/30/1992 | CA2074268A1 Fail-resistant solid state interruption system |
| 05/27/1992 | CN1016820B Portable micro-computer controlled multifuncitonal tester of protective relay |
| 05/26/1992 | US5117325 Controllable recloser for power line |
| 05/19/1992 | US5115226 Relay for detecting a current disturbance and asserting an output |
| 05/13/1992 | EP0484341A1 A power supply. |
| 05/06/1992 | EP0483591A2 Low tension switch device |
| 05/05/1992 | US5111189 Fault indicator with timing control |
| 05/05/1992 | US5111123 Motor driver interface fault detection apparatus using initial turn-on and noise timers |
| 04/28/1992 | CA1299723C Electric safety supply apparatus and connector device combination |
| 04/25/1992 | WO1992008143A1 Electric arc and radio frequency spectrum detection |
| 04/23/1992 | DE4033400A1 Current measuring arrangement for synchronously clocked power converter - safeguards transformer prim. current proportional voltage by Zener diode shorting switch closed in synchronism with clock |
| 04/21/1992 | US5107447 Abnormality diagnosing system and method for a high voltage power apparatus |
| 04/14/1992 | US5105326 Circuit for controlling the orientation of a magnetic field |
| 04/07/1992 | US5103365 Downed conductor automatic detecting device |
| 04/01/1992 | EP0477959A2 Overload current protection apparatus |
| 03/04/1992 | CN2098038U Power system oscillation detecting device composed by multipliers |
| 03/03/1992 | US5093770 Electrical energy storage system |
| 02/18/1992 | US5089928 Processor controlled circuit breaker trip system having reliable status display |
| 02/05/1992 | EP0469207A2 Solid state overload relay |
| 02/04/1992 | US5086367 Circuit breaker |
| 01/25/1992 | WO1992002067A1 Dual shunt current regulator |
| 01/21/1992 | US5083081 Current sensor for an electronic trip device |
| 01/15/1992 | EP0465507A1 Fault-powered power supply. |
| 01/09/1992 | DE4020351A1 Electronically monitoring and controlling window winder - using additional body motion sensor to avoid false triggering of unit in motor vehicle |
| 01/07/1992 | US5078078 Transformer internal fault warning indicator |
| 12/31/1991 | US5077626 Phase-failure detectors responsive to unequal bending of bi-metal members |
| 12/12/1991 | WO1991019339A1 Electrical protection devices |
| 12/11/1991 | EP0460643A2 Emergency circuit for, e.g., numerical control unit |
| 11/26/1991 | US5068598 Tension potential measuring circuit with selected time constant |
| 11/23/1991 | WO1991018441A1 A power supply |
| 11/19/1991 | US5067044 Sensor for detecting a quench in a superconductor using an optical coupling |
| 11/12/1991 | US5064998 Relay control apparatus |
| 11/06/1991 | EP0455314A2 Remote protection of three phase distribution transformers |
| 10/23/1991 | EP0453057A2 Remote protection of three phase distribution transformers |
| 10/23/1991 | EP0453056A2 Remote protection of three phase distribution transformers |
| 10/22/1991 | US5060166 Method and apparatus for rapidly analyzing AC waveforms containing DC offsets |
| 10/17/1991 | WO1991015890A1 Arcing fault detector |
| 10/16/1991 | EP0452228A1 Protector relay for medium high voltage network |
| 10/16/1991 | EP0452218A2 An apparatus for detecting failure in power system |
| 10/16/1991 | EP0452175A1 Electronic protective relay for polyphase load |
| 10/12/1991 | CA2039550A1 Protective relay of a medium voltage electrical mains system |
| 09/18/1991 | EP0446951A2 Four-pole circuit breaker |
| 09/18/1991 | EP0446933A2 Circuit breaker |
| 09/11/1991 | EP0446022A2 A sensor for detecting a quench in a superconductor using an optical coupling |
| 09/10/1991 | US5047724 Power cable arcing fault detection system |
| 09/06/1991 | CA2037470A1 Sensor for detecting a quench in a superconductor using an optical coupling |
| 09/04/1991 | EP0445048A1 Current sensor for electronic trip device of a circuit breaker |
| 09/04/1991 | CN1054317A Transmission direction meter of ac energy |
| 09/03/1991 | US5045778 Fault indicator with inrush restraint |
| 09/02/1991 | CA2037363A1 Current sensor for an electronic trip device |
| 08/28/1991 | EP0406276A4 Monitoring and fault protection of high voltage switchyards |
| 08/07/1991 | CN1053684A Tension measuring circuit |
| 08/06/1991 | US5038246 Fault powered, processor controlled circuit breaker trip system having reliable tripping operation |
| 07/23/1991 | US5034622 Power supply interface apparatus for communication facilities at a power station |
| 07/17/1991 | EP0336943A4 Phase loss detection circuit including transient protection |
| 07/03/1991 | EP0435405A1 Electronic safety device for connections to earth |
| 06/19/1991 | CN1052398A Electrical energy storage system |