Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02H - Emergency protective circuit arrangements › 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)
01/1999
01/05/1999US5856738 Method for protecting an excess discharge of a battery
01/05/1999CA2149102C Apparatus and method for thermal protection of electric motors
01/05/1999CA2077859C Device for protecting power supply circuit
12/1998
12/30/1998WO1998059401A1 Antisqueeze protection
12/30/1998WO1998058833A1 Motor driven power steering device
12/30/1998CN2302612Y Timing closing controller
12/30/1998CN2302611Y Protector for electric motor
12/30/1998CN1203471A Dynamic protection circuit for motor type load
12/29/1998US5853908 Protective device for secondary batteries
12/24/1998DE19725267A1 Verfahren zum Schutz von Gleichstrommotoren vor thermischer Überlastung A method of protecting against thermal overload DC motors
12/23/1998WO1998058434A1 Overvoltage protection circuit for a generating system
12/23/1998WO1998058433A1 Method for protecting direct current motors from thermal overload
12/23/1998WO1998045924A3 Battery protection system
12/23/1998EP0886360A2 Dynamic protection for a circuit for a motor type load
12/23/1998CN2301807Y Open phase protector for motor
12/23/1998CN2301806Y Loss-of-phase protection AC contactor
12/23/1998CN1202752A Ground fault protecting apparatus and method for solar power generation and solar power generation apparatus using apparatus and method
12/23/1998CA2301144A1 Overvoltage protection circuit for a generating system
12/19/1998CA2237642A1 Dynamic protection circuit for a motor type load
12/17/1998WO1998057416A1 A method for communication between a low potential level and a valve located on high voltage potential in a high voltage converter station as well as a device for such a communication
12/17/1998WO1998057406A1 A device for supervising in a high voltage converter station
12/16/1998EP0884817A2 Ground fault protecting apparatus and method for solar power generation and solar power generation apparatus using the apparatus and method
12/16/1998EP0774175A4 Movable barrier operator having force and position learning capability
12/16/1998CN2301005Y Ultra-small type electromechanical motor protector
12/15/1998US5850131 Process for driving electric motor-operated awnings
12/10/1998WO1998056157A1 Residential protection service center
12/10/1998WO1998056094A1 Coaxial surge protector having thermal fail-safe shunt
12/10/1998CA2539704A1 Overload protection circuit for a power supply
12/09/1998EP0883223A2 Multiple winding sensing control and protection circuit for electric motors
12/09/1998EP0883222A1 Self-protected trip device for immersed electrical transformer
12/09/1998CN2300210Y Integrated automation scattering microcomputer protection
12/09/1998CN2300209Y Load monitoring electric machine protector
12/09/1998CN1201287A Charging and discharging control circuit
12/09/1998CN1201246A Self-protection tripping mechanism for subway electric transformer
12/08/1998US5847945 Processes, device for producing a high voltage and installation for electrostatic spraying of a coating product
12/08/1998US5847915 Static isolator
12/08/1998US5847910 Fault protection device in a transformer
12/08/1998US5847908 Machine having current loss shutdown circuit with low resistance relay
12/08/1998US5847633 Apparatus and method for the rapid discharge of a superconducting magnet coil
12/08/1998US5847538 Control circuit for protecting an excess discharge of a battery
12/08/1998US5847523 Method of limiting current in a DC motor and DC motor system for implementing said method
12/03/1998DE19722017A1 Electrical circuit with earthed electrical component and control apparatus, e.g for vehicle ABS system
12/02/1998EP0669053B1 Active clamping circuit
12/02/1998CN2299414Y Intelligent electronic charger
12/02/1998CN1200585A Three phase non-disturbed type distribution transformer and switching combination arrangement
12/01/1998US5844464 Thermal switch
11/1998
11/26/1998WO1998053548A1 Method and circuit for disconnecting a converter
11/26/1998WO1998053466A1 A combination apparatus of distribution transformer and switch
11/26/1998DE19742391C1 Load-dump pulses protection method e.g. for motor vehicle control appliances connected to on-board power supply
11/26/1998DE19719919A1 Anordnung zum Schutz von elektrischen Einrichtungen An arrangement for protection of electrical equipment
11/25/1998EP0880214A2 Protection circuit and battery unit
11/25/1998EP0880086A1 A control circuit and method for a temperature sensitive device
11/25/1998CN1199953A Process and control device for motor output suitable for being controlled through communication bus
11/25/1998CN1199935A Series-connected circuit for secondary batteries
11/25/1998CN1040929C Protective method for three-phase electrical equipment and automatic electrical appliance protector thereof
11/24/1998US5841617 Electrical safety device with conductive polymer sensor
11/24/1998US5841312 Gating circuit having current measuring and regulating elements and a temperature measuring transistor
11/24/1998US5841265 Charge/discharge control circuit and chargeable electric power source apparatus
11/24/1998US5841253 Garage door operator with motor control circuit fault detection
11/19/1998WO1998052268A1 Circuit for the protection of electrical devices
11/19/1998DE19716826A1 Stromversorgungsnetz, insbesondere Schiffsbordnetz Mains, including ship-board network
11/18/1998EP0878816A2 Metal-clad gas insulated power switch
11/18/1998EP0877948A1 Method of detecting a fault in a monitored section of an electric transmission line using distance protection techniques
11/18/1998CN2297815Y Three phase ac electric motor protector
11/18/1998CN1199512A Power supply
11/18/1998CN1199264A Charge and discharge control circuit
11/18/1998CN1199262A Transmission line protection system
11/18/1998CN1199234A Metal-enclosed gas-insulated circuit breaker
11/18/1998CN1040820C High voltage fast cross-substation electric power supplying apparatus
11/17/1998US5838591 Temperature control apparatus for motor and information storing medium used therefor
11/17/1998US5838556 Switching power supply circuit
11/17/1998US5838526 Load actuation circuit with a surge protecting function
11/17/1998US5838525 High speed single-pole trip logic for use in protective relaying
11/12/1998WO1998050992A1 Method for controlling the closing process of closing devices with at least one part moved by an electromotor
11/12/1998DE19820667A1 Motor starter control method
11/12/1998DE19718631A1 Verfahren zur Steuerung des Schließvorgangs von Schließvorrichtungen mit mindestens einem elektromotorisch bewegten Teil Method for controlling the closing process of closing devices with at least one electric motor moving part
11/11/1998EP0877462A2 Method and apparatus for multi-function electronic motor protection
11/11/1998EP0780032B1 Circuit for operating an electric motor
11/11/1998EP0738432B1 Device for differentially protecting a power transformer
11/11/1998CN1198849A Method for measuring fault currents in an inverter and inverter with controlled semiconductor switches
11/10/1998US5835989 Battery system which prevents current from flowing during a short-circuiting of the battery terminals
11/10/1998US5835786 Computer apparatus with monitoring circuit for displaying fan working condition
11/10/1998US5835553 Semiconductor integrated circuit having a digital temperature sensor circuit
11/10/1998US5835361 Switch-mode power supply with over-current protection
11/10/1998US5835319 Method and apparatus for circuit breaking
11/10/1998US5834826 Protection against adverse parasitic effects in junction-isolated integrated circuits
11/10/1998US5832664 Power window device with safety device
11/05/1998WO1998049765A2 Overvoltage protection circuit for smps based on demagnetization signal
11/04/1998EP0780031B1 Circuit for operating an electric motor
11/04/1998CN1198033A Charge and discharge coatrol circuit
11/03/1998US5831807 Overload and short circuit protection device for a power semiconductor circuit
10/1998
10/29/1998WO1998048497A1 Power supply network, especially on ships
10/29/1998DE19727345A1 Short circuit or overcurrent protection unit for electrical apparatus
10/29/1998DE19717743A1 Device for lowering or lifting physically disabled into or from bath
10/29/1998DE19716963A1 Verfahren zur Ermittlung des Ortes einer Teilentladung Method for determining the location of a partial discharge
10/28/1998EP0873583A2 Digital current differential system
10/28/1998EP0732002B1 Rectifier bridge apparatus
10/28/1998CN2296086Y 电机保护器 Motor protection
10/28/1998CN2295888Y Multifunctional servo operator
10/28/1998CN1040472C Ground detecting method for inverter device
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