Patents
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)
10/1996
10/15/1996US5566082 Method of detecting a fault section of busbar
10/15/1996US5566060 E-beam high voltage switching power supply
10/15/1996US5565757 Charge control apparatus and electronic apparatus provided with such a control apparatus
10/10/1996WO1996031812A1 Control system for a d.c. motor with monitoring circuit and shut-off transistor in series with relay windings
10/10/1996DE19523352C1 Current monitoring device e.g. for electric conductor in on-load tap-switch
10/10/1996DE19513157A1 Vorrichtung zum Betreiben eines Verstellantriebs Apparatus for operating an adjusting drive
10/09/1996EP0736950A1 Device for protecting electronic circuits against supply battery disconnection (load dump) and/or overvoltages in the electrical supply circuit of motor vehicles
10/09/1996EP0736949A1 Protective equipment in a bipolar HVDC station
10/09/1996EP0736948A1 Obstruction-sensing system for a movable member
10/09/1996EP0736947A1 Overload protection arrangement for DC power loads
10/09/1996EP0736946A1 Interface module for a field bus and electrical apparatus for controlling and protecting an electrical motor
10/09/1996EP0736945A1 Disconnector-limit protection for three-phase electric transformers
10/09/1996CN2237296Y Overcurrent protector for radar aerial control system
10/09/1996CN1032996C Cross-bridge type open-phase protection circuit of power supply and its protection device
10/09/1996CN1032995C Three-phase asynchronous motor protector
10/08/1996US5563758 Circuit to permit three phase input power supply to operate when one phase drops out and provide lightening protection
10/08/1996US5563481 Brushless motor
10/03/1996WO1996030992A1 Hybrid alternator
10/03/1996CA2216834A1 Hybrid alternator
10/02/1996EP0735666A2 Control circuit for controlling the driving of a dc motor
10/02/1996EP0734778A2 Electrostatic spray coating device
10/02/1996EP0605438B1 Battery-operated device
10/02/1996CN2236704Y Two purpose urgent electric power supply
10/02/1996CN1132575A Electric motor with torque detecting means
10/02/1996CN1032948C Power failure stop circuit for a converter
10/01/1996US5561596 AC line stabilization circuitry for high power factor loads
10/01/1996US5561579 Solid-state circuit breaker with fault current conduction
10/01/1996US5561576 Step down transformer power supply with short circuit protection
09/1996
09/26/1996DE19510970A1 Temp. monitoring device for transformer
09/26/1996DE19509658A1 Low cost circuit starts sure motor shut=down on three=phase mains fault
09/25/1996EP0660972B1 Process and device for electronically monitoring the overload on electric motor drives
09/25/1996CN2236187Y Electric motor protector
09/25/1996CN1131805A Circuit breaker remote closing operator
09/24/1996US5559410 Device for controlling the function of an electric starting motor for a windshield wiper of a rear window of an automotive vehicle and for supplying an electric motor particularly to activate the windshield
09/24/1996US5559375 Power window control system of an automotive vehicle
09/24/1996US5557887 Yieldable gearing and safety mechanisms for garage door operators
09/18/1996EP0732002A1 Rectifier bridge apparatus
09/18/1996CN2235672Y Synchronous phase-shift controllable rectifying charging arrangement
09/18/1996CN2235670Y Protector of accumulator for charging or discharging
09/18/1996CN2235669Y Full automatically protective switch for three-phase power supply
09/18/1996CN1131477A Fault detector for voltage source self-commutated power converter
09/18/1996CN1032835C Method and device for protecting electrical power system
09/12/1996WO1996027942A1 Improved dc motor controller and method
09/11/1996EP0731544A2 Method and device for monitoring at least two parallel operating motors
09/11/1996EP0731391A1 Electrophotographic apparatus
09/11/1996EP0730791A1 Process for regulating an automatic door operated by a drive motor
09/11/1996EP0730721A1 Electronic control arrangement for motor-driven refrigeration compressors
09/11/1996CN2235171Y Safety energy-saving comprehensive control cabinet for low-voltage AC electric machine
09/10/1996US5555148 Overvoltage protection device for capacitor externally connected to power IC
09/06/1996WO1996027230A1 Protective circuit for series-connected power semiconductors
09/06/1996WO1996027229A1 Method for monitoring and controlling the opening and closing process of electrically powered units
09/05/1996DE19523270C1 Transformer stepping switch monitoring system
09/05/1996DE19507137A1 Verfahren zur Überwachung und Steuerung des Öffnungs- und Schließvorgangs von elektrisch betriebenen Aggregaten A method for monitoring and controlling the opening and closing process of electrically driven aggregates
09/04/1996EP0730340A1 Fault detector for voltage source self-commutated power converter
09/04/1996EP0730331A2 Circuit for limiting switching overvoltages in power semiconductor switches
09/04/1996EP0730330A1 Drive mechanism for closing parts in motor vehicles
09/04/1996EP0659303B1 Thyristor control set with overcurrent circuit-breaker
09/04/1996EP0587849B1 Thermal protection for locomotive main traction alternators
09/04/1996CN1130310A Transformer differential protection of wave mode symmetrical method
09/03/1996US5552952 Detection and isolation circuit for a failed bridge power rectifier and an electrical system employing same
09/03/1996US5552685 Apparatus and method for detection and control of circulating currents in a variable speed DC motor
09/03/1996CA2042546C Thyristor converter protection method and apparatus
09/03/1996CA2032534C Motor protection apparatus
08/1996
08/28/1996EP0729221A1 Speed control circuit for a dental drive motor
08/28/1996EP0729185A2 Improvements in or relating to charge monitoring devices
08/28/1996EP0672316B1 Automatic load current back regulation
08/28/1996CN2234148Y Electromagnetic comprehensive controller
08/28/1996CN2234147Y Electromagnetic comprehensive controller
08/28/1996CN2234146Y Electronic starting protective switch for single-phase motor
08/28/1996CN1129859A Control circuit for protecting an excess discharge of a battery
08/28/1996CN1129845A Circuit breaker remote closing operator
08/27/1996US5549456 Automatic pump control system with variable test cycle initiation frequency
08/21/1996EP0727858A2 Electronic spring charging motor controller
08/21/1996CN1129495A Arrangement for detecting stator earth leakages in three-phase current machines
08/20/1996US5548504 Power line linking apparatus for linking a power generator to a commercial power line
08/20/1996US5548464 Electronic motor protection apparatus
08/20/1996US5548462 Protective circuit
08/20/1996US5548202 Regulatable alternating device with means for determining final temperature
08/20/1996US5548134 Device for the protection of an integrated circuit against electrostatic discharges
08/14/1996EP0726632A1 Lift truck with internal temperature monitor and system
08/13/1996US5546262 Electronic protection device
08/13/1996US5546014 Method and device for setting the short circuit moment in electric motors, particularly in servomotors
08/13/1996US5545961 Electric motor drive
08/13/1996US5545933 For providing a predetermined working voltage
08/13/1996US5545012 Soft-start pump control system
08/08/1996WO1996024170A1 Battery pack having under-voltage and over-voltage protection
08/07/1996EP0725470A1 Phase-shifting transformer and protection system of phase-shifting transformer
08/07/1996CN1128424A Device for detecting and procecing short of phase
08/06/1996US5543995 Method and apparatus for protecting a power transmission line
08/06/1996US5543694 Control circuit for feedback, motor-operated valve
08/06/1996US5543693 Method for the control of the opening and closing process of electrically-driven device
08/06/1996US5543692 Method and apparatus for controlling an electric motor for moving a member
08/06/1996CA2051564C Junction box with protection function to protect from overvoltage and overcurrent
07/1996
07/31/1996CN2232167Y Multifunctional protector for motor
07/31/1996CN1127948A Overheat protector for motor
07/30/1996US5541803 Electrical safety device
07/24/1996EP0723325A1 Monitoring and control device for an electrical system
07/24/1996CN2231830Y Double-magnetic starter
07/23/1996US5539610 Floating drive technique for reverse battery protection
07/23/1996US5539601 Apparatus and method for thermal protection of electric motors