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