| Patents for H02H 1 - Details of emergency protective circuit arrangements (5,580) |
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| 07/25/1996 | WO1996022541A1 Fault current sensor device with radio transceiver |
| 07/23/1996 | US5539605 Digital circuit interrupter undervoltage release accessory |
| 07/17/1996 | EP0721688A1 Method of generating a protection-triggering signal |
| 07/17/1996 | EP0721685A1 Method of generating a signal indicating the direction of a short-circuit |
| 07/17/1996 | EP0721684A1 Method of generating a fault-indication signal |
| 07/16/1996 | US5537327 Method and apparatus for detecting high-impedance faults in electrical power systems |
| 07/10/1996 | EP0720782A1 A drive assembly for power operated doors |
| 06/26/1996 | EP0718948A2 Circuit interrupter providing protection and waveform capture for harmonic analysis |
| 06/25/1996 | CA2037672C Power supply interface apparatus for communication facilities at a power station |
| 06/19/1996 | EP0717498A1 A circuit for detecting a short circuit in a low side driven load |
| 06/16/1996 | CA2165226A1 Circuit for detecting a short circuit in a low side driven load |
| 06/12/1996 | EP0715791A1 An apparatus for protecting a subscriber line interface circuit against overvoltages |
| 05/23/1996 | DE19507933C1 Electric power switch operating system |
| 05/22/1996 | EP0713279A1 Apparatus providing protection and metering in an ac electrical system utilizing a multi-function sampling technique |
| 05/22/1996 | EP0521912B1 Arcing fault detector |
| 05/22/1996 | CN1031844C Microcomputer power failure control circuit |
| 05/21/1996 | US5519561 Circuit breaker using bimetal of thermal-magnetic trip to sense current |
| 05/15/1996 | EP0712193A1 Circuit breaker using bimetal of thermal-magnetic trip to sense current |
| 05/15/1996 | DE4440281A1 Optical detection device for arcing interference discharges in enclosed switchgear |
| 05/02/1996 | DE4438592A1 Thyristor short-circuiter for quenching interference arcs in LV power-thyristor type switching systems |
| 04/30/1996 | US5512832 Energy analysis fault detection system |
| 04/25/1996 | WO1996012197A1 Visual power on indicator |
| 04/23/1996 | US5510949 For coupling electrical power to a load |
| 04/23/1996 | US5510946 Circuit breaker protection against "arc short circuit" hazards |
| 04/23/1996 | US5510945 Power supply for ground fault circuit interrupter |
| 04/23/1996 | US5510773 Low burden visual power-on indicator for a self-powered circuit protection device |
| 04/23/1996 | US5510658 Circuit breaker device for electric vehicle |
| 04/16/1996 | US5508875 Self powered remote trip indicator |
| 04/09/1996 | US5506789 Load extraction fault detection system |
| 04/09/1996 | US5506485 Digital modular microprocessor based electrical contactor system |
| 03/26/1996 | USRE35190 Plug-in power supply |
| 03/20/1996 | EP0702445A1 Fault current protective switch with energy storage circuit |
| 03/13/1996 | EP0701312A2 Arcing fault detector |
| 03/12/1996 | US5499189 Signal processing method and apparatus for discriminating between periodic and random noise pulses |
| 03/12/1996 | US5498956 Distributed current and voltage sampling function for an electric power monitoring unit |
| 02/20/1996 | US5493468 Electrical contactor system with transfer of scaled overload information |
| 02/13/1996 | US5491601 Circuit for detecting a short circuit in a low side driven load |
| 02/07/1996 | EP0584155B1 A motor reverse system |
| 02/07/1996 | EP0440769B1 Processor controlled circuit breaker trip system having reliable status display |
| 02/06/1996 | US5490030 Electromagnetic and radio frequency interference suppression for ground fault circuit interrupters |
| 01/30/1996 | US5488532 System of protection for electric power distribution failures |
| 01/24/1996 | CN1115489A Current signal correction process and device |
| 01/17/1996 | EP0507782B1 Electric arc and radio frequency spectrum detection |
| 01/16/1996 | US5485343 Digital circuit interrupter with battery back-up facility |
| 01/16/1996 | US5485093 Randomness fault detection system |
| 01/16/1996 | CA2039704C Fault powered, processor controlled circuit breaker trip system having reliable tripping operation |
| 01/11/1996 | WO1996001015A1 An apparatus for protecting a subscriber line interface circuit against overvoltages |
| 01/11/1996 | CA2169640A1 An apparatus for protecting a subscriber line interface circuit against overvoltages |
| 01/09/1996 | US5483635 Circuit for protecting a load control device from high and low voltage conditions |
| 12/26/1995 | CA2039713C Processor controlled circuit breaker trip system having reliable status display |
| 12/21/1995 | DE4433406C1 Remotely operated protection device |
| 12/20/1995 | EP0688078A2 Busbar protection method and device |
| 12/20/1995 | EP0493579B1 Dual shunt current regulator |
| 12/19/1995 | US5477408 System for detecting certain erroneous fault-indicating data in a protective relay for power systems |
| 12/19/1995 | US5477150 Electric arc and radio frequency spectrum detection |
| 12/14/1995 | DE4420513A1 Protecting bus=bars using constant k with value greater than k equal to 2 outputs |
| 12/13/1995 | EP0687050A2 An overcurrent protection apparatus |
| 12/12/1995 | US5475556 Protective system to shut off power to one or more power distribution lines |
| 12/12/1995 | US5475290 Device for protecting washing machine motor including brushless motor against overcurrent |
| 12/06/1995 | EP0685918A1 Power supply security device |
| 12/06/1995 | EP0674793A4 Expert system for detecting high impedance faults. |
| 12/01/1995 | CA2150509A1 Synchronization device for a secured supply system |
| 11/30/1995 | WO1995032536A1 Digital circuit interrupter undervoltage release accessory |
| 11/23/1995 | DE19517714A1 Electronic trip-release unit |
| 11/22/1995 | EP0299060B1 High impedance fault analyzer in electric power distribution |
| 11/16/1995 | WO1995031030A1 Improved voltage polarity memory system and fuse-switch assembly usable therewith |
| 11/08/1995 | EP0681310A1 Load driving circuit |
| 11/08/1995 | EP0653073A4 Electric arc detector. |
| 11/02/1995 | EP0679295A1 Load analysis system for fault detection |
| 10/31/1995 | US5463311 Apparatus and method for measuring operating voltage electrical signals in a high voltage environment |
| 10/25/1995 | EP0678960A1 Method and apparatus for correcting a current signal |
| 10/17/1995 | US5459630 Self testing circuit breaker ground fault and sputtering arc trip unit |
| 10/10/1995 | CA2050223C Overload current protection apparatus |
| 10/05/1995 | WO1995026586A1 Thermal overload protection for switches |
| 10/04/1995 | EP0674793A1 Expert system for detecting high impedance faults |
| 10/03/1995 | US5455731 Power controller reset during load starting |
| 09/26/1995 | US5453678 Programmable-output voltage regulator |
| 09/21/1995 | WO1995025374A1 Method of protecting electrical equipment, in particular direct current equipment, e.g. photo-voltaic equipment, and a detection unit for said equipment |
| 09/19/1995 | US5452223 Arc detection using current variation |
| 09/19/1995 | US5452172 For use with a three phase high voltage electrical power distribution line |
| 09/13/1995 | EP0671798A1 Electronic thermal protection circuit |
| 09/05/1995 | US5448175 Current detecting circuit |
| 08/30/1995 | EP0669691A1 Circuit for devices for measuring and monitoring electrical currents |
| 08/16/1995 | EP0666957A1 Electromotive drive |
| 08/16/1995 | CN1106957A Self-testing circuit breaker ground fault and sputtering arc trip unit |
| 08/09/1995 | CN1106568A Earth fault circuit breaker |
| 07/27/1995 | WO1995020257A1 Residual current safety switch |
| 07/19/1995 | EP0663114A1 Digital protective relay arrangement. |
| 07/18/1995 | US5434738 Fault detector |
| 07/18/1995 | US5434509 Method and apparatus for detecting arcing in alternating-current power systems by monitoring high-frequency noise |
| 07/13/1995 | WO1995019059A1 Device for differentially protecting a power transformer |
| 07/12/1995 | EP0662743A1 Electronic device for thermal protection |
| 07/11/1995 | US5432455 Method and apparatus for detecting arcing in alternating current power systems by monitoring high-frequency noise |
| 07/11/1995 | CA2139815A1 Electronic thermal protection device |
| 07/05/1995 | EP0660973A1 Protection triggering process. |
| 06/27/1995 | US5428495 Electrical switching apparatus with digital trip unit and automatic frequency selection |
| 06/22/1995 | DE4343560A1 Fault current protection switch |
| 06/21/1995 | CN1103997A Ground fault circuit interrupter with immunity to wide band noise |
| 06/20/1995 | US5426554 For an electrical power distribution system |
| 06/14/1995 | EP0657742A2 Detection of arcs in power cables |