| 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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| 08/20/1998 | WO1998036483A1 Circuit arrangement for preventing deep discharge of a battery |
| 08/19/1998 | EP0858687A1 Auto up window with obstacle detection system |
| 08/19/1998 | CN1190821A Two-polar time constant thermal protection for electric power switch unit |
| 08/18/1998 | US5796629 Protective relaying system comprising numerical comparator-based line differential processing circuitry |
| 08/18/1998 | US5796596 Fault control circuit for switched power supply |
| 08/18/1998 | US5796568 Current limiter device |
| 08/18/1998 | US5796567 Electronic circuit with protection against supply voltage overload |
| 08/18/1998 | US5796565 Apparatus and method for starting and protecting a three-phase motor |
| 08/18/1998 | US5796349 System and method for monitoring wear of an axial bearing |
| 08/18/1998 | US5796258 Adaptive quadrilateral characteristic distance relay |
| 08/18/1998 | US5796257 Detecting faults in power lines |
| 08/13/1998 | DE19703617A1 Drive unit for industrial installations, particularly those producing basic materials |
| 08/12/1998 | EP0857368A1 Method of controlling a direct current drive |
| 08/12/1998 | EP0857125A1 Circuit arrangement for controlling a wiper motor |
| 08/11/1998 | US5793750 System of communicating output function status indications between two or more power system protective relays |
| 08/11/1998 | US5793623 Air conditioning device |
| 08/11/1998 | US5793590 Coaxial cable protection device |
| 08/11/1998 | US5793186 Charging terminal shortcircuit preventing circuit for battery pack |
| 08/11/1998 | US5793171 Control circuit for controlling the driving of a DC motor for a mirror assembly of a vehicle |
| 08/06/1998 | WO1998034316A1 Power supply monitoring integrated circuit device and battery pack |
| 08/06/1998 | WO1998034315A1 Series compensation of electric alternating current machines |
| 08/06/1998 | WO1998034312A1 Synchronous machine |
| 08/06/1998 | CA2279414A1 Synchronous machine |
| 08/06/1998 | CA2279193A1 Power supply monitoring integrated circuit device and battery pack |
| 08/06/1998 | CA2278631A1 Series compensation of electric alternating current machines |
| 08/05/1998 | CN2287348Y Protective energy saving contactor for motor |
| 08/04/1998 | US5790430 Variable speed fan failure detector |
| 08/04/1998 | US5790357 In a multi-phase power system |
| 08/04/1998 | US5790356 Transformer protection system for protecting source transformers from ill effects of zero-sequence currents |
| 08/04/1998 | US5789971 Protection circuit and method for power transistors, voltage regulator using the same |
| 07/30/1998 | WO1998033257A1 Power supply monitoring ic and battery pack |
| 07/30/1998 | WO1998033099A1 System and method for providing backup protection in a power substation |
| 07/30/1998 | CA2276466A1 System and method for providing backup protection in a power substation |
| 07/29/1998 | CN2286938Y Control-protector for three-phase motor |
| 07/28/1998 | US5786973 Semiconductor power module and compound power module |
| 07/28/1998 | US5786699 Test method and apparatus for testing a protective relay system |
| 07/23/1998 | DE19800234A1 Brushless motor e.g.for vehicle air-conditioner fan |
| 07/23/1998 | DE19701883A1 Device for detecting step-asynchronism and blocking of stepper- or synchronous-motor |
| 07/22/1998 | EP0854555A2 Integrated supply protection |
| 07/22/1998 | EP0720782B1 A drive assembly for power operated doors |
| 07/22/1998 | CN2286536Y Emergency control device for automobile circuit |
| 07/22/1998 | CN1039269C Semiconducotr composite element, and method of detecting abnormal conditions in inverter device having element |
| 07/21/1998 | US5784237 Control method and apparatus for power distribution network |
| 07/21/1998 | US5784233 Differential protection device of a power transformer |
| 07/21/1998 | US5784232 For a compressor motor |
| 07/21/1998 | US5784231 For a switched-mode power supply |
| 07/16/1998 | WO1998031087A1 Integrated circuit device for monitoring power supply |
| 07/16/1998 | WO1998031085A1 Control device with forced operation function and semiconductor integrated circuit device |
| 07/16/1998 | DE19700828A1 Method of operating an automatic door assembly esp sliding door |
| 07/16/1998 | CA2278329A1 Integrated circuit device for monitoring power supply |
| 07/16/1998 | CA2276135A1 Control device with forced operation function and semiconductor integrated circuit device |
| 07/15/1998 | EP0853364A2 Method for measuring a single electrical power load in electrical distribution networks |
| 07/15/1998 | EP0853363A1 Static switch |
| 07/15/1998 | EP0741881B1 Integrated circuit |
| 07/15/1998 | CN1187704A Virtual third harmonic blocking method for transformer microcomputer protection |
| 07/14/1998 | US5781390 Integrated supply protection |
| 07/14/1998 | US5781385 Method and apparatus for protecting an adjustable impedance element controlling the power supply to an electric motor, in particular in a motor vehicle |
| 07/14/1998 | US5780988 Method for detecting the position, direction of rotation and rotational speed of a rotatably seated part |
| 07/09/1998 | WO1998029929A1 Device and method relating to protection of an object against over-currents comprising over-current reduction and current limitation |
| 07/09/1998 | CA2275619A1 Device and method relating to protection of an object against over-currents comprising over-current reduction and current limitation |
| 07/08/1998 | EP0783788B1 Current differential protection arrangement |
| 07/08/1998 | EP0649575B1 Electric motor drive |
| 07/08/1998 | CN2285937Y Opto-electric coupling signal isolation magnetoelectric motor protector |
| 07/08/1998 | CN1187063A Switching power source |
| 07/07/1998 | US5777835 Third phase reconstruction from a two current transformer sensor with three-phase true RMS and phase loss determination capabilities |
| 07/07/1998 | US5777833 Electronic relay for calculating the power of a multiphase electric load based on a rectified wave signal and a phase current |
| 07/07/1998 | US5777455 For a motorized vehicle |
| 07/02/1998 | WO1998028835A1 Protecting method for inrush current preventing resistor |
| 07/02/1998 | WO1998028831A1 A rechargeable battery with a built-in safety circuit for a portable electric apparatus |
| 07/02/1998 | WO1998028671A1 Power supply and electronic ballast with low-cost inverter bootstrap power source |
| 07/01/1998 | EP0851584A2 Improvements in or relating to integrated circuits |
| 07/01/1998 | EP0850817A2 Load short-circuit failure detection method and apparatus and electric power steering device |
| 07/01/1998 | EP0850760A1 Electrostatic assist system |
| 07/01/1998 | EP0850759A1 Electrostatic assist system and method for monitoring the same |
| 07/01/1998 | EP0850502A1 Circuit configuration to detect excess temperature due to current flow |
| 07/01/1998 | CN1186375A Peak reverse voltage removing circuit |
| 06/30/1998 | US5774046 For a vehicle |
| 06/30/1998 | US5773980 One-terminal fault location system that corrects for fault resistance effects |
| 06/30/1998 | US5773945 Time-compensated overcurrent detection circuit for DC motor |
| 06/30/1998 | CA2047957C Temperature control system for motors and power components of a material handling vehicle |
| 06/25/1998 | WO1998027641A1 Overvoltage protective circuit for step-down converter |
| 06/25/1998 | WO1998027636A1 Device and method relating to protection of an object against over-currents comprising over-current reduction |
| 06/25/1998 | WO1998027635A1 Device and method relating to protection of an object against over-currents comprising over-current reduction and current limitation |
| 06/25/1998 | WO1998027634A1 Device and method relating to protection of an object against over-currents comprising over-current reduction |
| 06/25/1998 | DE19654097A1 System for monitoring and/or controlling DC motors esp. for driving adjustable elements in motor vehicles |
| 06/25/1998 | CA2279394A1 Device and method relating to protection of an object against over-currents comprising over-current reduction |
| 06/25/1998 | CA2275638A1 Device and method relating to protection of an object against over-currents comprising over-current reduction and current limitation |
| 06/25/1998 | CA2275616A1 Device and method relating to protection of an object against over-currents comprising over-current reduction |
| 06/24/1998 | CN1185868A Hybrid alternator having voltage regutator |
| 06/23/1998 | US5771162 Electric protective device used in switching mode power supply systems |
| 06/23/1998 | US5770934 Method for the closed-loop control of an automatic door which is propelled by a drive motor |
| 06/18/1998 | WO1998026487A1 Device including a thermally protected switching transistor |
| 06/18/1998 | WO1998026299A1 Device to detect the state of n power capacitors forming part of a high-voltage power capacitor bank |
| 06/18/1998 | DE19653727A1 Switching off of drive motor esp. for rail-bound vehicle |
| 06/18/1998 | DE19651726A1 Vorrichtung zur Zustandserfassung von n Kondensatorkannen einer Hochspannungskondensatorbatterie Apparatus for determining the condition of n capacitor cans a high voltage capacitor bank |
| 06/17/1998 | EP0848492A1 Method for diagnosing abnormality of circuit member of inverter driving controller for driving and controlling motor |
| 06/17/1998 | EP0848309A1 Device for monitoring and limiting the static closing force of a door |
| 06/17/1998 | EP0848259A1 Stall detection circuit for a motor and method for detecting stalling of a motor |
| 06/17/1998 | EP0847611A1 Sharing arrangement for surge protection circuitry |
| 06/16/1998 | US5768079 Adaptive ground and phase fault detection for a power distribution system |