H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

Patents for H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions (32,726)
12/1997
12/02/1997	US5694010 Method and apparatus for controlling a brushless DC motor
12/02/1997	US5693995 Hybrid alternator
12/02/1997	CA2063654C Surge absorber for protection of communication equipment connected to communication lines
11/1997
11/27/1997	DE19633415C1 Monitoring and controlling the opening and closure of electrically operated systems e.g. in motor vehicle
11/26/1997	EP0808986A2 Drive control for doors
11/26/1997	CN2269017Y Phase-off protector for three phase motor
11/26/1997	CN2269016Y Separate motor protector without external power
11/26/1997	CN2269015Y Motor protector with programmable controller
11/26/1997	CN2269014Y Thin shell pressure timing protector of refrigeration compressor
11/26/1997	CN1036557C Temp. rise protector for rare-earth electric motor
11/25/1997	US5691871 Test circuit for electrical switching device
11/25/1997	US5691870 Circuit for monitoring and disabling power supply signals to a microprocessor in a computer system utilizing secondary voltage regulators
11/25/1997	US5691643 Ground fault detecting apparatus and method for detecting ground fault of field circuit and exciting circuit by detecting ground fault current flowing from ground to neutral point of exciting circuit
11/25/1997	US5691630 Power supply control apparatus
11/25/1997	US5691577 Reflector-pump network for preempting AC power supply harmonic distortion and for satiating the complex harmonic power demand of a rectifier
11/20/1997	WO1997043821A1 Method and device for braking an all-mains motor
11/20/1997	DE19619932A1 Electromotor drive, esp. for vehicle window
11/19/1997	EP0808011A1 Anti-kickback and breakthrough torque control for power tool
11/19/1997	EP0808010A2 System and method for protecting a single phase motor from circulating currents
11/19/1997	EP0746899A4 Switching regulator having high current prevention features
11/19/1997	CN2268342Y Variable-frequency speed regulator
11/19/1997	CN2268329Y Electric motor phase-loose automatic protection device of voltage sampling
11/19/1997	CN2268328Y Device for recording and controlling working parameters of electric pump and motor
11/19/1997	CN1165581A Method and device for preventing explosions and fires in electrical transformers
11/19/1997	CN1165421A Double silicon control automatic regulator fault population detecting protection method and device
11/18/1997	US5689209 Low-side bidirectional battery disconnect switch
11/18/1997	US5689160 Vehicle window lift control
11/18/1997	CA2125227C Apparatus and method for protecting induction motors from momentary power loss
11/12/1997	WO1997046781A1 Window opening and closing apparatus
11/12/1997	EP0806537A1 System for determining the position in automatic doors
11/12/1997	CN2267570Y Automatic switching over arrangement for instrument power supply
11/12/1997	CN2267569Y Three phase electronic blade switch for preventing against phase interruption
11/12/1997	CN2267568Y Arrangement for preventing three phase motor against excessive load or phase interruption
11/12/1997	CN2267567Y Differential relay for transformer
11/12/1997	CN1164449A Low-voltage electromagnetic riveter
11/11/1997	US5687069 For starting a dc-driven device without current surges
11/11/1997	US5687066 Power converter with overvoltage protection
11/11/1997	US5687049 Method and circuit for protecting power circuits against short circuit and over current faults
11/11/1997	US5686877 Apparatus and method for the rapid discharge of superconducting magnet coil
11/11/1997	CA2106325C Gate power supply circuit
11/06/1997	DE19616542A1 Light emitting diode (LED) type battery monitor for multi-block batteries
11/05/1997	EP0805547A2 Reflector-pump network for preempting AC power supply harmonic distortion and for satiating the complex harmonic power demand of a rectifier
11/05/1997	EP0805539A1 Circuit for three-phase power cable
11/05/1997	EP0805538A2 Overcurrent and short-circuit protection
11/05/1997	EP0805537A2 Stall or reduced-speed protection for electric motor
11/05/1997	EP0789947A4 Protection switch for a battery powered device
11/05/1997	CN2266827Y Leakage protector for AC frequency-conversion speed regulator
11/05/1997	CN2266826Y Phase-defect protector for three-phase AC electric motor
11/05/1997	CN1164144A Method and equipment for controlling converter
11/04/1997	US5684663 Protection element and method for protecting a circuit
11/04/1997	US5684662 Driving apparatus for stabilizing operation of an extensible-retractable power antenna
11/04/1997	US5684372 Garage door operator safety apparatus
11/04/1997	US5684371 Drive circuit for a bidirectional flow control valve
11/04/1997	US5683179 Apparatus and method for thermoluminescent quench detection for superconducting devices
10/1997
10/30/1997	DE19632910C1 Contactless driving of motor vehicle power-driven window to lower stop position
10/30/1997	DE19615441C1 Operating electric motor drive for operating windows, flaps and doors
10/29/1997	EP0803413A2 Windshield wiper control with stall protection
10/29/1997	EP0803144A1 Protection system for a shorted rectifying diode within a synchronous generator
10/29/1997	CN2266214Y Full-enclosed integrated protector for motor
10/29/1997	CN2266213Y Electronic thermorelay
10/29/1997	CN1163510A Method and apparatus for controlling invertor
10/28/1997	US5682022 Active stabilization of serially connected capacitors in high voltage applications
10/28/1997	CA2072296C Switching cirucit protection apparatus and method
10/23/1997	WO1997039509A1 Device and process for electronic monitoring of an adjusting drive in a vehicle
10/23/1997	WO1997039508A1 Device and process for electronic monitoring of an adjusting drive in a vehicle
10/23/1997	DE19615643A1 Arrangement for protecting voltage-limited electronic modules against over-heating and over-voltage
10/23/1997	DE19615581A1 Control of electric drives in vehicles e.g. for wind-screen washer drive
10/22/1997	EP0802621A1 Motor start-up circuit
10/22/1997	EP0802604A2 Protection circuit
10/22/1997	EP0802603A1 Self-excitation type switch power supply unit with overcurrent protection
10/22/1997	EP0801832A1 Detection and isolation circuit for a failed bridge power rectifier and an electrical system employing same
10/22/1997	EP0759221B1 Circuitry for detecting earth leakages in energy transmission cables
10/22/1997	EP0714568B1 Device for driving a power controlling element of a vehicle driving unit
10/22/1997	CN2265629Y Remote controller for motor
10/22/1997	CN2265628Y Small type explosion-insulated contactless reversible starter for mine use
10/22/1997	CN1163022A Process and circuit for controlling fans
10/22/1997	CN1163019A Protection switch for a battery powered device
10/21/1997	US5680019 Reverse proportional voltage adjusting circuit system
10/16/1997	WO1997038270A1 Methods and apparatuses for detecting surge in centrifugal compressors
10/15/1997	EP0801412A1 Conductor array for a flat panel display and method of manufacture
10/15/1997	EP0800979A2 Electric motor driving apparatus
10/15/1997	CN2265019Y Phase interruption protector of motor
10/15/1997	CN2265018Y Phase interruption protector for three-phase motor
10/15/1997	CN1036170C Main motor driving circuit of toaster
10/14/1997	US5677606 Device and method for detecting unbalanced condition in a load driven by a motor
10/09/1997	WO1997037416A1 Process for detecting abutment and blocking in an electric motor
10/09/1997	DE19613249A1 Phase sequence alternation circuit for three=phase induction motor e.g. for compressor or welding equipment
10/08/1997	EP0800251A1 Protection for a three-phase distribution transformer immersed in a dielectric fluid
10/08/1997	EP0799736A1 Sealing and guiding strips and safety systems for power-driven windows
10/08/1997	EP0799515A1 Circuit and process for operating an adjusting drive
10/08/1997	EP0799514A1 Circuit for detecting overload in an adjusting drive
10/08/1997	EP0746891A4 Electrical safety device
10/08/1997	EP0694226B1 Method of monitoring a temperature rise of a squirrel cage induction motor
10/08/1997	CN1161597A Circuit for avoiding instantaneous short circuit of lower power tube with higher one of dc-to-ac converter
10/08/1997	CN1161588A Method and apparatus for protecting switching element of inverter from being overheated
10/07/1997	US5675497 Method for monitoring an electric motor and detecting a departure from normal operation
10/07/1997	US5675482 Accident detection circuit of a voltage-type self-excited power converter
10/07/1997	US5675465 Field ground fault detector and field ground fault relay for detecting ground fault corresponding to DC component extracted from ground fault current
10/07/1997	US5675464 Stall or reduced-speed protection system for electric motor
10/07/1997	US5675236 Low battery power state determination apparatus and method for secondary battery

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