| Patents for H02H 1 - Details of emergency protective circuit arrangements (5,580) |
|---|
| 07/22/1997 | US5650902 Substation for the distribution of electrical energy protected against arcing faults |
| 07/17/1997 | WO1997025762A1 Movement control for screens or panels |
| 07/15/1997 | US5648887 Electric current limiting device for winch responsive to multiple device states |
| 07/09/1997 | EP0783197A1 Apparatus for determining an out-of-step condition in a protective relay for power stations |
| 06/24/1997 | US5642250 Protection release method |
| 06/24/1997 | US5642248 Electrical extension cord with built-in safety protection |
| 06/24/1997 | US5642247 Automatic fault monitoring system and motor control system incorporating same |
| 06/17/1997 | US5640103 Radial basis function neural network autoassociator and method for induction motor monitoring |
| 06/11/1997 | EP0778645A2 Control powered overload relay |
| 06/06/1997 | CA2189685A1 Control powered overload relay |
| 06/04/1997 | CN1151225A Improved voltage polarity memory system and fuse-switch assembly usable therewith |
| 05/27/1997 | US5633774 For interrupting the flow of current power conductor |
| 05/22/1997 | WO1997018611A2 Energy validation arrangement for a self-powered circuit interrupter |
| 05/22/1997 | CA2210399A1 Energy validation arrangement for a self-powered circuit interrupter |
| 05/15/1997 | CA2236148A1 Surge arrester |
| 05/14/1997 | EP0663114B1 Digital protective relay arrangement |
| 05/13/1997 | US5629824 For protecting an instrument from damaging effects of electric arcs |
| 05/06/1997 | US5627718 Apparatus providing protection and metering in an ac electrical system utilizing a multi-function sampling technique |
| 05/06/1997 | US5627716 Overcurrent protection device |
| 05/06/1997 | US5627714 Electronic thermal protection device |
| 04/29/1997 | US5623891 Internal fault indicator for a transformer |
| 04/16/1997 | EP0721685B1 Method of generating a signal indicating the direction of a short-circuit |
| 04/15/1997 | US5621599 Switched MOV device |
| 04/10/1997 | WO1997013307A1 Voltage pulse controllable electronic devices |
| 04/09/1997 | EP0721684B1 Method of generating a fault-indication signal |
| 04/09/1997 | EP0657033B1 Detecting faults in power lines |
| 04/08/1997 | US5619392 Method and device for protecting busbars |
| 04/04/1997 | CA2186988A1 Multi-source electric power distribution system with fault protection provided by non-directional overcurrent trip units |
| 04/02/1997 | EP0721688B1 Method of generating a protection-triggering signal |
| 04/01/1997 | US5617286 Circuit breaker having data recording |
| 03/27/1997 | DE19536782A1 Circuit arrangement for current measuring relay with inductive coupling of active switchgear |
| 03/25/1997 | US5615075 AC/DC current sensor for a circuit breaker |
| 03/12/1997 | EP0762591A2 Electrical system with arc protection |
| 03/11/1997 | US5610532 Isolated DC fault current sensor |
| 03/09/1997 | CA2184968A1 Electrical system with arc protection |
| 03/05/1997 | EP0626107B1 Method and device for preventing overstabilization of longitudinal differential protection in case of internal fault |
| 03/05/1997 | EP0611495B1 Dual voltage power supply |
| 03/01/1997 | CA2184652A1 Electrical extension cord with built-in safety protection |
| 02/20/1997 | DE19530385A1 Overspeed protection for three=phase motors |
| 02/11/1997 | US5602709 High impedance fault detector |
| 02/04/1997 | US5600527 Circuit interrupter providing protection and waveform capture for harmonic analysis |
| 02/04/1997 | US5600526 Load analysis system for fault detection |
| 02/04/1997 | US5600524 Intelligent ground fault circuit interrupter |
| 02/04/1997 | US5600523 Earth leakage breaker |
| 01/28/1997 | US5598315 Self-power tripping relay with balanced power supply current and measurement current |
| 01/22/1997 | CN1141097A Device for differentially protecting a power transformer |
| 01/07/1997 | US5592354 Audio bandwidth interface apparatus for pilot wire relays |
| 12/31/1996 | US5590012 Electric arc detector sensor circuit |
| 12/27/1996 | EP0750382A2 Current detecting device for mounting on a current-carrying conductor |
| 12/17/1996 | US5585995 For interrupting the power supply on a multiphase line |
| 12/17/1996 | US5585990 Electronic motor protection apparatus |
| 12/11/1996 | EP0748021A1 Low cost apparatus for detecting arcing faults and circuit breaker incorporating same |
| 12/11/1996 | EP0747715A2 Multi-phase measuring |
| 12/04/1996 | EP0660973B1 Protection triggering process |
| 11/26/1996 | US5578931 ARC spectral analysis system |
| 11/19/1996 | US5576632 Neural network auto-associator and method for induction motor monitoring |
| 11/13/1996 | EP0741927A1 Residual current safety switch |
| 11/12/1996 | US5574387 Radial basis function neural network autoassociator and method for induction motor monitoring |
| 11/12/1996 | US5574320 Load drive circuit |
| 11/07/1996 | WO1996035250A1 Method and apparatus for detecting arcing in ac power systems by monitoring high frequency noise |
| 10/29/1996 | US5570262 Hybrid overload relay |
| 10/29/1996 | US5570259 Circuit arrangement for controlling a load and for recognizing a line interruption |
| 10/23/1996 | EP0739072A2 Earth leakage circuit breaker |
| 10/23/1996 | EP0738432A1 Device for differentially protecting a power transformer |
| 10/23/1996 | EP0401299B1 A method and a system for monitoring and controlling an electric motor |
| 10/22/1996 | US5568399 Method and apparatus for power outage determination using distribution system information |
| 10/10/1996 | DE19523352C1 Current monitoring device e.g. for electric conductor in on-load tap-switch |
| 10/03/1996 | WO1996030989A1 Circuit interrupter including an electric arc monitoring circuit |
| 10/03/1996 | WO1996030988A1 Electric arc detector sensor circuit |
| 10/03/1996 | WO1996030987A1 Accidental arc detector for electric power distribution switching equipments |
| 10/03/1996 | CA2216369A1 Accidental arc detector for electric power distribution switching equipments |
| 10/02/1996 | EP0734533A1 Visual power on indicator |
| 10/01/1996 | US5561605 Arc detection using current variation |
| 09/26/1996 | WO1996029770A1 Delayed-action fault current of differential current circuit-breaker |
| 09/25/1996 | CN2236163Y Over-voltage and over-current protector |
| 09/24/1996 | US5559657 Earth fault circuit breaker |
| 09/19/1996 | DE19506354A1 Detection and elimination of earth-fault arcs in single pole encapsulated switchgear plants for quenched networks |
| 09/11/1996 | EP0406276B1 Monitoring and fault protection of high voltage switchyards |
| 09/05/1996 | DE19523270C1 Transformer stepping switch monitoring system |
| 09/05/1996 | DE19508763A1 Monitoring arrangement for power switching device |
| 08/29/1996 | WO1996026567A1 An earth leakage detector circuit |
| 08/29/1996 | DE19506168A1 Appts. for detection of switching state of protective relays |
| 08/28/1996 | EP0524309B1 Surge suppression and fault containment circuit and packaging therefor |
| 08/28/1996 | CN1130007A An apparatus for protecting a subscriber line interface circuit |
| 08/28/1996 | CN1129809A Arc detection using current variation |
| 08/27/1996 | US5550751 Expert system for detecting high impedance faults |
| 08/27/1996 | US5550699 Hot plug tolerant ESD protection for an IC |
| 08/22/1996 | WO1996025671A1 Method of determining an earth-fault current |
| 08/22/1996 | DE19504124A1 Network over-voltage protection device for mains-operated load |
| 08/20/1996 | US5548464 Electronic motor protection apparatus |
| 08/15/1996 | WO1996024856A1 Measuring system for enclosed high-voltage switchgear |
| 08/13/1996 | US5546266 Circuit interrupter with cause for trip indication |
| 08/13/1996 | US5546265 Digital circuit interrupter shunt trip control circuit |
| 08/13/1996 | US5545961 Electric motor drive |
| 08/08/1996 | DE19506860C1 Verfahren zur Erfassung eines Erdschlußstromes A method for detecting a ground fault |
| 08/08/1996 | DE19504731C1 Meßsystem für gekapselte Hochspannungsschaltanlagen Measurement system for encapsulated high-voltage switchgear |
| 08/08/1996 | DE19501781A1 Safety protection system for power distribution switch-gear |
| 07/31/1996 | CN1127947A Fault current protecting switch with energy storing circuit |
| 07/30/1996 | US5541500 Power supply arrangement comprising a direct voltage monitoring circuit |
| 07/30/1996 | US5541499 Electronic trip device comprising a power supply control device |