Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02H - Emergency protective circuit arrangements › H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031)
11/2000
11/30/2000DE19930685A1 Electronic circuit for detecting short circuit in electric motor evaluates component in inverter voltage having six times supply frequency
11/29/2000EP1056179A2 Protection system for devices connected to an alternating current electrical power supply
11/29/2000EP1056178A2 Circuit for monitoring earth faults in a furnace in a three phase heating system
11/29/2000CN2408466Y Earthing condition monitor
11/29/2000CN1275243A Electronic switch for quick, automatic response to current overloads
11/28/2000US6154687 Modified cosine filters
11/28/2000CA2070439C Metering accessory for molded case circuit breakers
11/26/2000CA2308977A1 Protection system for devices connected to an alternating current electrical power supply
11/23/2000WO2000070724A1 A microprocessor based setting group controller for protective relay operations
11/23/2000WO2000070631A2 A method for overcurrent protection in a superconducting cable
11/23/2000DE19922182A1 Supply unit output voltage monitoring unit e.g. for protecting connected load
11/23/2000DE19921631A1 Protection method for mains connected appliances with capacitive load against consequence of idle running, involves comparing voltage at appliance with artificially prepared voltage
11/23/2000DE10024532A1 Verfahren zur Voraussage von Fehlerbedingungen in einer intelligenten elektronischen Vorrichtung Method for predicting fault conditions in an intelligent electronic device
11/23/2000DE10024485A1 Operating method for electronic commutating electric motor, using microprocessor controller and non-transient memory to store normal operating motor parameter for comparison with monitored values during operation
11/23/2000DE10006438A1 Power supply controller for motor vehicle, has FET to control power to load depending on over current condition and stops protection circuit when gain rate of load current is less than preset value
11/22/2000EP1053585A1 Electrical systems
11/22/2000EP1053557A1 Remote controllable circuit breakers with positive temperature coefficient resistivity (ptc) elements
11/22/2000EP1053518A1 Protection circuit for an integrated circuit
11/22/2000CN2407491Y Large capacity high speed switch
11/22/2000CN2407490Y Under-voltage releaser
11/22/2000CN2407489Y Intellectual controller for communication circuit breaker with plastic shell
11/22/2000CN1274462A Method and appts. of recording data in optical recording medium
11/22/2000CN1274187A Electronic thermorelay
11/21/2000US6151689 Detecting and isolating errors occurring in data communication in a multiple processor system
11/21/2000US6151686 Managing an information retrieval problem
11/21/2000US6151560 Open circuit failure monitoring apparatus for controlled electrical resistance heaters
11/21/2000US6150782 Process for detecting abutment and blocking in an electric motor
11/21/2000CA2190000C Detector for monitoring the integrity of a ground connection to an electrical appliance
11/19/2000CA2307537A1 Arc fault circuit interrupter without dc supply
11/16/2000WO2000069044A1 Overvoltage protection circuit
11/16/2000WO2000069042A1 Adaptive sampling rate based on power system frequency
11/16/2000WO2000017728A9 Computer controlled ac electrical terminations and network
11/15/2000EP1051786A1 Protective circuit breaking circuitry
11/15/2000EP0980546A4 Non-intrusive power control for computer systems
11/15/2000CN1273704A Method for monitoring status parameters in switching mechanism and corresponding device
11/14/2000US6148267 Method and apparatus for transmission line phase angle comparisons
11/14/2000US6147847 Circuit arrangement for detecting the current of a current conductor in order to activate electronically controllable tripping devices
11/14/2000US6147616 Automatic power interruption and re-supply relay for an electric power line
11/14/2000CA2210857C Improved loss of potential determination for use in protective relays for electric power systems
11/09/2000WO2000067279A1 Undervoltage release
11/09/2000WO2000067270A1 Power supply systems and methods that can enable an electromagnetic device to ride-through variations in a supply voltage
11/09/2000WO2000039715A3 Method of statistical analysis in an intelligent electronic device
11/09/2000EP1057132A3 Method of statistical analysis in an intelligent electronic device
11/09/2000DE19963450A1 Power supply device e.g. for battery-operated electric hand tool, has temperature of step-down transformer monitored by thermal protection switch for automatic disconnection from mains supply
11/08/2000CN2405309Y Single contact, comprehensive and intelligent type contactor
11/08/2000CN1272971A Protective relay with modular control panel
11/08/2000CN1272970A Redundant communications in protective relay
11/07/2000US6144540 Current suppressing circuit breaker unit for inductive motor protection
11/07/2000US6144192 Abnormal heavy current production preventing apparatus
11/07/2000CA2104195C Computationally-efficient distance relay for power transmission lines
11/02/2000EP1048103A1 Method for performing instantaneous protection in a trip unit
11/02/2000DE19919331A1 Unterspannungsauslöser Undervoltage release
11/02/2000DE19919292A1 Mobile protection device with current measuring equipment to record current on the ground wire and switch off the current
11/02/2000DE10017238A1 Kurzschlußlichtbogendetektion für ein Flugzeug Short-circuit arc detection for an aircraft
11/02/2000DE10014072A1 Power window safety device for motor vehicle, includes position detection circuit which detects open position of window glass inorder to estimate closed position based on which safety control area is set-up
11/01/2000CN2404244Y Short-circuit protection device
11/01/2000CN2404228Y Over-voltage automatic protecting socket
10/2000
10/31/2000US6141770 Fault tolerant computer system
10/31/2000US6141766 System and method for providing synchronous clock signals in a computer
10/31/2000US6141202 Method and apparatus for triggering a fuse
10/31/2000US6141198 Solid state overload relay
10/31/2000US6141197 Smart residential circuit breaker
10/31/2000US6140915 Alarm apparatus for vehicle-onboard AC generator
10/31/2000US6140789 Method of detecting, diagnosing and automatically correcting abnormalities in servo control system
10/31/2000CA2052101C Fault detection method and apparatus
10/26/2000WO2000064025A1 Protective circuit for protecting active components from over- or undervoltage
10/26/2000WO2000064022A1 Active material low power electrical switching mechanism and drive circuit therefor
10/25/2000EP1046971A2 Electronic control device
10/25/2000EP1046545A2 Power supply monitoring apparatus for vehicle
10/25/2000EP1046210A1 Battery pack protection circuit
10/25/2000CN2403159Y Controller for electric heater
10/25/2000CN1271196A Triphase line or load protector module
10/25/2000CN1271195A Protective controller, monitoring system and storage medium of storage program
10/25/2000CN1057840C Insulation state measurement method, judgment apparatus and dispersion type power generating system using the same
10/24/2000US6137699 Power supply protection and control circuit
10/24/2000US6137667 Circuit and method for triggering an over-voltage protection unit
10/24/2000US6137666 High speed, selective protective relays
10/24/2000US6137418 Single channel apparatus for on-line monitoring of three-phase AC motor stator electrical faults
10/24/2000US6137271 Automatic polarity exchange circuit with current detection feedback capabilities
10/24/2000CA2183176C High power dc blocking device for ac and fault current grounding
10/19/2000WO2000062393A1 Protective circuit for an electronic device
10/19/2000DE19916685A1 Protective circuit for active component such as operational amplifier, includes series circuit with series resistance and reference diodes connected between supply potentials
10/19/2000DE19913223A1 Power consumption indicating arrangement, for mains circuit breaker, has optical signaling device such as LED to alert user that a load is connected
10/18/2000EP1045500A1 Electronic tripping device with phase reconstruction and circuit breaker with such a trip device
10/18/2000EP1044587A1 Ground fault protection circuit
10/18/2000EP1044502A1 Method and device for short-circuit and overload circuit breaking using a semiconductor component
10/18/2000EP1044489A1 Earth leakage protective relay
10/18/2000CN2402040Y Overcurrent protective box
10/18/2000CN2402036Y Remote signal warning device for power source lightning arrester
10/18/2000CN1270430A Electronic break-off unit with phase reset function and breaker including same
10/18/2000CN1057645C Earthleakage-current protection device
10/18/2000CN1057644C Delayed-action fault current of differential current circuit-breaker
10/17/2000US6134679 System and method for accessing devices in a computer system
10/17/2000US6134672 System and method for iterative copying of read/write memory
10/16/2000CA2305910A1 Combo afci/gfci with single test button
10/12/2000WO2000060715A1 Device for the mains connection of a power supply cable
10/12/2000WO2000060623A1 Circuit provided with a protective function
10/12/2000DE19915849A1 Fault-current (FI-) circuit breaker device e.g. for frequency converters
10/11/2000CN2400951Y Domestic short-circuit protection leakage circuit breaker
10/11/2000CN2400805Y Electronic single-phase pre-paid watt-hour meter
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