Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02H - Emergency protective circuit arrangements › H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031)
01/1997
01/02/1997EP0751600A1 Device for testing the earthing of an electric user, in particular the bodywork in electric vehicles
01/02/1997EP0600046B1 Microprocessor watch-dog monitor for electronic trip units
01/02/1997DE19523967A1 Earth current circuit-breaker for insulation monitoring of electric circuits
01/01/1997CN1139281A Heat-sensitive self reset device for safety unit
12/1996
12/31/1996US5589060 Filter for liquids, in particular internal-combustion engine lubricant oils
12/24/1996US5587917 Data collection and processing for digital AC power system monitor/analyzer
12/24/1996US5587866 Power-on reset circuit
12/24/1996US5587864 Short circuit and ground fault protection for an electrical system
12/18/1996EP0749208A2 Field effect transistor protection circuit
12/18/1996EP0538298B1 A switchboard
12/17/1996US5585995 For interrupting the power supply on a multiphase line
12/12/1996WO1996039740A1 Movable barrier operator having force and position learning capability
12/11/1996EP0748021A1 Low cost apparatus for detecting arcing faults and circuit breaker incorporating same
12/11/1996EP0746890A1 Method and apparatus for rms current approximation
12/11/1996EP0552273B1 Circuit protection arrangement
12/11/1996CN2242533Y Emergency protective circuit arrangement specially adapted for high voltage or low voltage generator
12/11/1996CN2242532Y Socket with function of automatic disconnection of all garding current of household electric appliance
12/04/1996EP0448619B1 Apparatus for protecting electrical systems
12/04/1996CN2241934Y Multi-function protector for electricity consumer
12/04/1996CN2241933Y Phase-sequence controller
12/04/1996CN2241932Y Self-locking power-off power-saving switch
12/03/1996US5581434 Apparatus including a transient voltage suppressor
12/03/1996US5581433 Electronic circuit breaker
11/1996
11/28/1996WO1996037939A1 Electrical fault interrupt with frayed cord protection
11/28/1996DE19538368C1 Overcurrent protection circuit for transistor feeding resistive load, esp. for vehicle auxiliary electric motor
11/28/1996CA2222216A1 Electrical fault interrupt with frayed cord protection
11/27/1996CN2241404Y Leakage current action protector with transducer
11/27/1996CN2241403Y Short circuit disconnection device
11/27/1996CN1136703A Electric switch with current protection for remote station and portable local device interface
11/26/1996US5579195 Power stoppage minimizing systems for distribution lines and methods of using a distribution line
11/21/1996WO1996037025A1 Electric power distribution unit for buildings
11/21/1996CA2225753A1 Electric power distribution unit for buildings
11/20/1996EP0513349B1 Method and device for radio-navigational determinations using artificial earth-satellites
11/20/1996CN2240799Y Phase-loss protector
11/20/1996CN2240790Y Leakage protective plug
11/20/1996CN2240782Y Structure improved leakage protector for power source
11/20/1996CN1135981A Electric junction box and electric current distribution system for automotive vehicles
11/19/1996US5576625 Test method and apparatus for testing a protective relay system
11/19/1996US5576618 Process and apparatus for comparing in real time phase differences between phasors
11/19/1996US5576580 DC power supply circuit
11/13/1996EP0742630A1 Method of controlling the movement of an opening panel
11/13/1996EP0741927A1 Residual current safety switch
11/13/1996EP0705482B1 Switching contactor driving circuitry
11/13/1996CN2240209Y Multi-functional motor protector with digital indicator
11/13/1996CN2240208Y Multi-functional protective arrangement without auxiliary power supply
11/13/1996CN1135672A Detachable small keyboard of breaker of electronic circuit
11/12/1996US5574653 Switchboard
11/12/1996US5574611 Service interruption minimizing system for power distribution line
11/07/1996DE19520988C1 Fault analysis device for voltage supply appts.
11/06/1996EP0612444B1 Personnel protection system for electrical power connections
11/06/1996CN2239673Y Phase sequence relay having automatic phase changing
11/06/1996CN2239672Y Multifunctional thermal relay
11/06/1996CN2239671Y Electrothermal blanket switch having electronic timing, safety protecting and temp. control function
11/06/1996CN2239670Y Digital distributing line protection and low frequency load reducing device
10/1996
10/30/1996EP0740383A1 Device with a line connecting to an electrical distribution network through a circuit breaker, with at least one load and with an undervoltage protection
10/30/1996EP0740382A1 Device with a line connecting to an electrical distribution network, with at least one load and with an overvoltage protection
10/30/1996EP0740381A1 Device with a line connecting to an electrical distribution network, with a circuit breaker and with an undervoltage protection
10/30/1996EP0740073A1 Circuit for detecting an overvoltage on an electric load
10/29/1996US5570260 Overvoltage protection circuit
10/29/1996US5570259 Circuit arrangement for controlling a load and for recognizing a line interruption
10/29/1996US5570258 Phase monitor and protection apparatus
10/29/1996US5570254 Method and device for preventing excessive currents in a welding converter
10/24/1996WO1996033542A1 Differential protection device sensitive to pulsating current
10/24/1996WO1996033505A1 Current transformer, in particular for a fault current tripping device sensitive to pulsating currents and tripping device equipped with such a transformer
10/24/1996WO1996033087A1 Continuous input cell for data acquisition circuits
10/24/1996WO1996033086A1 Ac input cell for data acquisition circuits
10/24/1996DE19514695C1 Verfahren zum Durchführen von Distanzmessungen an einer elektrischen Hochspannungsübertragungsleitung A method for performing distance measurement at a high voltage electrical transmission line
10/24/1996CA2218525A1 Continuous input cell for data acquisition circuits
10/24/1996CA2218502A1 Ac input cell for data acquisition circuits
10/23/1996EP0739073A1 Differential protection device
10/23/1996EP0739072A2 Earth leakage circuit breaker
10/23/1996EP0738432A1 Device for differentially protecting a power transformer
10/23/1996CN2238498Y Multifunctional automatic air switch
10/23/1996CN1134055A Precise multiangular arc relay
10/22/1996US5568350 Over temperature memory circuit
10/22/1996US5568344 In-line cord ground fault circuit interrupter
10/17/1996WO1996032653A1 Method of measuring distances along a high-tension power-transmission line
10/16/1996CN1033061C 电路断路器 Circuit breaker
10/12/1996CA2173803A1 Ground fault detection circuit for an undergrounded control system
10/10/1996WO1996031931A1 A.c. power cut-off device
10/10/1996CA2217604A1 A.c. power cut-off device
10/09/1996EP0736949A1 Protective equipment in a bipolar HVDC station
10/09/1996CN2237296Y Overcurrent protector for radar aerial control system
10/09/1996CN2237245Y Multifunctional single phase electric meter
10/08/1996US5563758 Circuit to permit three phase input power supply to operate when one phase drops out and provide lightening protection
10/08/1996US5563756 Resettable ground fault circuit interrupter
10/02/1996EP0735666A2 Control circuit for controlling the driving of a dc motor
10/02/1996DE19512190A1 Controlled IC overvoltage protection circuit
10/02/1996CN1032947C Protective circuit for electric appliance
10/01/1996US5561605 Arc detection using current variation
10/01/1996US5561596 AC line stabilization circuitry for high power factor loads
10/01/1996US5561580 Controller for a part feed system including a blown fuse indicator circuit
10/01/1996US5561576 Step down transformer power supply with short circuit protection
09/1996
09/26/1996WO1996029770A1 Delayed-action fault current of differential current circuit-breaker
09/26/1996DE19510970A1 Temp. monitoring device for transformer
09/26/1996DE19509658A1 Low cost circuit starts sure motor shut=down on three=phase mains fault
09/25/1996CN1131807A Fault current protective switch with energy storage circuit
09/24/1996US5559719 Digitally controlled circuit interrupter with improved automatic selection of sampling interval for 50 Hz and 60 Hz power systems
09/24/1996US5559657 Earth fault circuit breaker
09/24/1996US5559500 Overcurrent sense circuit
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