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)
09/1999
09/08/1999CN2337706Y Telecommunication equipment protector
09/08/1999CN2337673Y Double-set fuse tongs
09/08/1999CN2337672Y Mining multi-function portable small switch
09/08/1999CN1227950A Method for creating defect management information in recording medium, and apparatus and medium based on said method
09/07/1999US5949633 Fluorescent lamp drive system with transformer over-voltage protection circuit
09/01/1999EP0939473A2 Motor controller based on pwm system
09/01/1999EP0939472A2 Arc fault detector with protection against nuisance trips and circuit breaker incorporating same
09/01/1999CN2336506Y Control device for charger
09/01/1999CN2336500Y Insulation four-branch combined overvoltage protector
09/01/1999CN2336499Y Safety protector for domestic electric appliances
09/01/1999CN2336498Y Non-contact break protection AC contactor
09/01/1999CN2336497Y Four-branch combined overvoltage protector
09/01/1999CN2336496Y Safety supply unit
08/1999
08/31/1999US5946270 Over power supply voltage cut-off circuit
08/31/1999US5946174 Process for detecting a ground fault in an electric power transmission line
08/31/1999US5946173 Ground fault circuit Interrupter with enhanced range
08/31/1999US5945796 For controlling ascending/descending drive of an opening/closing body
08/31/1999CA2114889C Plug-in ground fault monitor for a circuit breaker
08/31/1999CA2074167C Solid state current controlled interruption system
08/26/1999WO1999043066A1 Zone arc fault detection
08/26/1999WO1999043065A1 Electrical fault detection system
08/26/1999CA2263009A1 Arc fault detector with protection against nuisance trips and circuit breaker incorporating same
08/25/1999EP0787379A4 Power-on reset circuit
08/25/1999EP0757854B1 A window discriminator controlled current breaker
08/25/1999CN2335291Y Multi-function protector
08/25/1999CN2335258Y Three-phase power source voltage type phase loss protector
08/24/1999US5943281 Semiconductor integrated circuit reducing undesired current
08/24/1999US5943246 Voltage detection of utility service disturbances
08/24/1999US5943204 Electronic trip unit with dedicated override current sensor
08/24/1999US5943203 Electronic circuit breaker
08/24/1999US5943201 Method and apparatus for setting trip profiles in electrical switches using a portable unit with a non-volatile memory
08/24/1999US5943199 Mini appliance leakage current interrupter
08/24/1999US5943198 Electrical fault interrupt circuits
08/24/1999US5942811 Apparatus and method for extending the supply of reserved power during a line power interruption
08/19/1999WO1999031565A3 Method and apparatus for in-system debugging
08/19/1999DE19805499A1 Method for switching on, and supplying circuit for, individual items of motor vehicle electrical equipment
08/18/1999EP0936716A1 Differential protection device
08/18/1999EP0935758A1 Method and circuit for monitoring a defined amplitude threshold value of signals formed by alternating voltage
08/18/1999CN2334116Y AC contactor
08/18/1999CN1226347A 电磁装置 Electromagnetic devices
08/18/1999CN1226098A Differential protection device
08/18/1999CN1044756C Short circuit limiting protector
08/17/1999US5940260 Apparatus and method for distributing electrical power
08/17/1999US5940257 Method and apparatus for alternating current monitoring with phase and magnitude measurement
08/17/1999US5940256 Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault
08/17/1999US5939993 Method for developing a high voltage and device for electrostatic coating product spraying
08/17/1999US5939991 Circuit breaker with current level indicator
08/17/1999US5939863 Power circuit providing reverse battery protection and current and temperature sensing
08/17/1999US5939803 System for off-mains switching of current consuming devices such as actuators
08/17/1999CA2074287C Switch mechanism with two fulcrums
08/12/1999WO1999040665A1 System comprising hot insertable/removable function units
08/12/1999WO1999040664A1 Electrical protection systems
08/12/1999WO1999040663A1 Electrical systems
08/12/1999WO1999040662A1 Adaptive distance protection system
08/12/1999WO1999025483A9 Spray gun power supply unit monitor
08/12/1999DE19801708C1 Short circuit current limiter for limiting fault currents in power networks
08/12/1999DE19757365C1 Trigger circuit arrangement for over-voltage protection unit
08/12/1999CA2319479A1 Adaptive distance protection system
08/11/1999EP0935327A1 Electric power control system
08/11/1999EP0934596A2 Circuit breakers with ptc (positive temperature coefficient resistivity) elements
08/11/1999EP0755582B1 A device for indicating a destroyed arrester
08/11/1999CN2333111Y Miniature leakage protector
08/11/1999CN2333110Y Over-voltage protector for colour television
08/11/1999CN2333109Y Full automatic anti-theft electrical appliance
08/11/1999CN1225753A Rotating electrical machine plant
08/11/1999CN1225743A 变压器/电抗器 Transformer / reactor
08/11/1999CN1044654C Circuit for limiting current
08/10/1999US5936819 Break display apparatus for semiconductor switching element incorporating overcurrent/overheating protection function
08/10/1999US5936817 Electrical switching apparatus employing a circuit for selectively enabling and disabling a close actuator mechanism
08/05/1999WO1999039417A1 Protective circuit breaking circuitry
08/05/1999DE19803684A1 Time-delayed differential current protection device
08/04/1999EP0933859A1 Electronic on-line control and monitoring system for high-voltage circuit breakers
08/04/1999EP0933857A2 Ground fault electrical switching apparatus for coordinating tripping with a downstream ground fault switch
08/04/1999EP0933643A1 Procedure for fault localisation in AC networks
08/04/1999CN2332097Y Overvoltage circuit breaker
08/03/1999US5933341 Power converting apparatus
08/03/1999US5933311 Circuit breaker including positive temperature coefficient resistivity elements having a reduced tolerance
08/03/1999US5933305 For an ac electrical system
08/03/1999US5933068 Protective apparatus for an electrical installation having temperature-sensitive disconnection means
07/1999
07/29/1999WO1999038248A1 Ac power converter
07/29/1999WO1999031692A8 A device for switching
07/29/1999CA2260525A1 Ground fault electrical switching apparatus for coordinating tripping with a downstream ground fault switch
07/28/1999EP0932235A2 A directional element
07/28/1999CN1224226A Control device for electromechanical contactor-circuit breaker type device
07/27/1999US5930101 Overvoltage cut-off circuit of private exchange branch having tie line
07/27/1999US5930093 Portable welding gun power circuit capable of generating a fault current
07/27/1999US5930092 Power monitoring
07/27/1999US5929613 Regulator for an alternator of a vehicle
07/22/1999WO1999037006A1 Circuit interrupter having improved current sensing apparatus
07/21/1999EP0929263A1 Modes/surgical functions
07/21/1999CN2330095Y Full automatic safety switch
07/21/1999CN1044302C Relay protector
07/20/1999US5926355 Electrical switching apparatus employing battery-powered indicator
07/20/1999US5926354 Solid state relay and circuit breaker
07/20/1999US5926010 Overcurrent breaking circuit
07/20/1999US5925888 Optocoupler input expansion circuit
07/20/1999CA2039698C Microcomputer based electronic trip system for circuit breakers
07/15/1999WO1999035743A1 Method and device for short-circuit and overload circuit breaking using a semiconductor component
07/14/1999EP0929139A2 Electronic trip unit with dedicated override current sensor
07/14/1999EP0928511A1 Circuit arrangement for detection of current in an electric conductor to control electronically controllable tripping devices
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