H02H 1 - Details of emergency protective circuit arrangements

Patents for H02H 1 - Details of emergency protective circuit arrangements (5,580)
06/1995
06/14/1995	EP0657033A1 Detecting faults in power lines.
06/13/1995	US5424894 Electrical line-fault detector and circuit breaker device
06/13/1995	US5424893 Gas discharge device power supply with ground fault protection
06/07/1995	CN2200244Y Refrigerator protector with decorative function
05/1995
05/30/1995	US5420740 Ground fault circuit interrupter with immunity to wide band noise
05/30/1995	US5419197 Monitoring diagnostic apparatus using neural network
05/26/1995	WO1995014304A1 Load driving circuit
05/24/1995	DE4333259C1 Verfahren zum Erzeugen eines die Richtung eines Kurzschlußstromes angebenden Richtungssignals A method for generating a direction of a short-circuit current direction indicative signal
05/23/1995	US5418463 Detection of arcs in power cables using plasma noise or negtive resistance of the arcs
05/17/1995	EP0653073A1 Electric arc detector
05/16/1995	CA2042344C Mdi fault detection apparatus using initial turn-on and noise timers
04/1995
04/20/1995	WO1995010873A1 Load analysis system for fault detection
04/20/1995	WO1995010815A1 Expert system for detecting high impedance faults
04/19/1995	EP0649207A1 Self-testing circuit breaker ground fault and sputtering arc trip unit
04/19/1995	EP0649206A1 Ground fault circuit interrupter with immunity to wide band noise
04/18/1995	US5408176 Monitoring and fault protection of high voltage switch yards
04/11/1995	CA2058549C Arc preventing electrostatic power supply
04/06/1995	WO1995009469A1 Method of generating a protection-triggering signal
04/06/1995	WO1995009465A1 Method of generating a signal indicating the direction of a short-circuit
04/06/1995	WO1995009464A1 Method of generating fault signals indicating the nature of a fault in an electrical power-supply network to be monitored
04/06/1995	WO1995009463A1 Method of generating a fault-indication signal
04/05/1995	EP0596879B1 Process and arrangement for recognizing defects in power converters
03/1995
03/30/1995	WO1995008859A1 A drive assembly for power operated doors
03/30/1995	WO1995008857A1 Switching installation for distributing electric power protected against arc interference
03/23/1995	DE4344013C1 Electrical circuit arrangement
03/23/1995	DE4331992A1 Cell-like switching installation which is protected against internal arcs, for distribution of electrical energy
03/01/1995	EP0641056A1 Monitoring device especially for single or multiphase a.c.
02/1995
02/22/1995	EP0639879A2 Arc detection using current variation
02/14/1995	US5388451 High voltage transmission switching apparatus with gas monitoring device
02/08/1995	EP0637394A1 Voltage reduction circuit
02/01/1995	EP0637114A1 A high voltage transmission switching apparatus with gas monitoring device
01/1995
01/31/1995	CA2127937A1 High voltage transmission switching apparatus with gas monitoring device
01/25/1995	EP0611495A4 Dual voltage power supply.
01/18/1995	EP0634826A1 Earth fault circuit breaker
01/18/1995	EP0465507B1 Fault-powered power supply
01/17/1995	US5382896 For an electronic trip device
12/1994
12/28/1994	EP0484341B1 A power supply
12/20/1994	US5375026 Method and device for preventing overstabilization of longitudinal differential protection in case of internal fault
12/16/1994	CA2125799A1 Earth fault circuit breaker
12/13/1994	US5373412 Electronic trip device comprising communication means
12/13/1994	US5373241 Electric arc and radio frequency spectrum detection
12/01/1994	DE4418124A1 Device for recognising insulation deterioration on power-supply cables
11/1994
11/30/1994	EP0626107A1 Method and device for preventing overstabilization of longitudinal differential protection in case of internal fault.
11/30/1994	EP0336943B1 Phase loss detection circuit including transient protection
11/29/1994	US5369356 Distributed current and voltage sampling function for an electric power monitoring unit
11/23/1994	EP0625814A1 Electronic trip device comprising a power supply control
11/23/1994	EP0600072A4 Trip energy monitor.
11/22/1994	US5367424 Circuit for protecting an electronic switch against short circuits
11/17/1994	DE4316239A1 Method for arc identification
11/17/1994	DE4315637A1 Method for detecting the position, the direction (sense) of rotation and/or the speed of rotation of a rotatably mounted part
11/02/1994	CN1026438C System and method for inspection of un-normal situation of high voltage power apparatus
10/1994
10/26/1994	EP0440782B1 Fault powered, processor controlled circuit breaker trip system having reliable tripping operation
10/25/1994	US5359293 Detecting an arcing fault in a DC electrical power distribution line
10/20/1994	DE4413068A1 Device for recognising insulation deterioration
10/19/1994	EP0619922A1 Reconstruction of saturated current transformer signals
09/1994
09/29/1994	WO1994022031A1 Electric arc detector
09/15/1994	WO1994021014A1 Arc detection in neon lighting systems
09/15/1994	DE4307859A1 Safety shutdown of electric devices
09/14/1994	EP0615327A2 Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault
09/06/1994	CA1331883C Monitoring and fault protection of high voltage switch yards
08/1994
08/30/1994	US5343155 Fault detection and location system for power transmission and distribution lines
08/27/1994	CA2116496A1 Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault
08/24/1994	EP0611495A1 Dual voltage power supply.
08/23/1994	US5341265 Method and apparatus for detecting and responding to downed conductors
08/09/1994	US5337205 Dual voltage power supply
08/02/1994	US5335135 Fault recording system for an electric power trip unit
07/1994
07/26/1994	CA2031690C Dispositif de mesure de tension
07/20/1994	CN1089764A Digital protecting relay
07/05/1994	CA2010661C Ground fault detector
06/1994
06/29/1994	EP0560973A4 Communication interface for bus connected circuit breakers
06/28/1994	US5325061 Computationally-efficient distance relay for power transmission lines
06/28/1994	US5324989 Power controller module providing user selectable overload protection
06/21/1994	US5323288 Protection system for electric circuits
06/15/1994	CN1088022A A memory or signature circuit
06/08/1994	EP0600076A1 Logic level current and voltage independent restraint system
06/08/1994	EP0600072A1 Trip energy monitor
05/1994
05/18/1994	EP0596879A1 Process and arrangement for recognizing defects in power converters.
05/11/1994	EP0596643A1 Overcurrent protection device with visual indicators for trip and programming functions
05/11/1994	EP0596566A2 High-voltage transformer
05/10/1994	US5311392 Dual processor electric power trip unit
05/03/1994	US5309311 Electrical apparatus for differential current protection
04/1994
04/28/1994	WO1994009240A1 Electromotive drive
04/28/1994	DE4307866A1 Elektromotorischer Antrieb Electric motor drive
04/26/1994	US5307230 Circuit breaker with protection against sputtering arc faults
04/19/1994	US5305235 Monitoring diagnosis device for electrical appliance
04/19/1994	US5305175 Faulted current indicator with protection against temporary overloads and transients
04/14/1994	WO1994008379A1 Digital protective relay arrangement
04/06/1994	EP0590936A2 Electrical switching apparatus with digital trip unit and automatic frequency selection
03/1994
03/31/1994	WO1994007290A1 Protection triggering process
03/31/1994	WO1994007254A1 A memory or signature circuit for switchgear
03/30/1994	EP0589347A2 Circuit breaker and method of controlling the same
03/24/1994	DE4331716A1 Arcing detector for LV switch appts.
03/22/1994	US5297149 Fault detection or alarm system
03/17/1994	WO1994006203A1 Servo waveform display system
03/17/1994	WO1994006190A1 Dual voltage power supply
03/17/1994	WO1994006026A1 Detecting faults in power lines
03/17/1994	DE4230692A1 Schutzauslöseverfahren Protection triggering method
03/17/1994	DE4230649A1 Signal correction, esp. of signals with light arcing noise - involves detecting noise patterns and replacing affected signal section with noise free section
03/16/1994	EP0587404A2 Electronic motor protection apparatus
03/02/1994	EP0584447A1 Current measuring appliance for a length of cable

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