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)
11/1994
11/22/1994	US5367427 Overcurrent trip unit with indication of dependency of trip functions
11/22/1994	US5367425 Method and device for preventing understabilization of longitudinal differential protection in case of external fault and current transformer saturation
11/22/1994	US5367424 Circuit for protecting an electronic switch against short circuits
11/16/1994	CN1026643C Circuit breaker with pating plug having memory
11/15/1994	US5365397 Device for protecting power semiconductor device against short circuit
11/15/1994	US5365396 Negative sequence directional element for a relay useful in protecting power transmission lines
11/15/1994	US5365394 Electronic relay to protect motors and thyristors against symmetric overload, phase unbalance and short-circuit
11/09/1994	CN2182482Y Low-voltage selective electric leakage protecting device for mine use
11/09/1994	CN2182481Y Phase-sequence display protector for phase failure and phase error
11/09/1994	CN2182480Y Controller for preventing electricity fraudulent use
11/09/1994	CN2182479Y Overvoltage leakage protector
11/09/1994	CN2182478Y Energy-saving civil loading controller
11/09/1994	CN2182477Y Multi-function circuit protector
11/09/1994	CN1094863A Protective method for three-phase electrical equipment and automatic electrical appliance protector thereof
11/08/1994	US5363269 GFCI receptacle
11/08/1994	US5362206 Pump control responsive to voltage-current phase angle
11/02/1994	CN2181794Y Electronic ballast with anomalous state protection of lamp
11/02/1994	CN2181767Y All-purpose device for avoiding fraudulent use of electricity
11/02/1994	CN2181750Y Electric leakage protector
11/01/1994	US5361185 Distributed VCC/VSS ESD clamp structure
11/01/1994	US5361183 Ground fault protection for electrothermal de-icing applications
10/1994
10/26/1994	EP0621678A1 Overvoltage protection circuit
10/26/1994	EP0443011B1 Processor controlled circuit breaker trip system having an intelligent rating plug
10/26/1994	EP0440782B1 Fault powered, processor controlled circuit breaker trip system having reliable tripping operation
10/26/1994	CN2181112Y Remote control type multi-function double-protecting leakage protector
10/26/1994	CN2181074Y Electric conductance sound-imitating switch
10/26/1994	CN1026381C Electronic ballast protecting circuits
10/25/1994	US5359293 Detecting an arcing fault in a DC electrical power distribution line
10/20/1994	DE4413068A1 Device for recognising insulation deterioration
10/19/1994	EP0620629A1 Output driver with switchable output
10/19/1994	CN2180017Y Safety protector for using electricity
10/18/1994	US5357395 Undervoltage protection circuit, system and method of operating same
10/18/1994	US5357394 Circuit breaker with selective locking
10/12/1994	EP0480937B1 Loss of neutral or ground protection circuit
10/12/1994	CN2179654Y Power quantitative limit load-regulating and energy-saving carrier remote-control system
10/12/1994	CN2179651Y Household power application safety protector
10/12/1994	CN2179650Y Leakage overcurrent protector
10/11/1994	CA2024351C Differential protective relay apparatus
10/11/1994	CA1332439C Power line surge suppressor
10/05/1994	EP0618657A1 Automatic triggering circuit
10/05/1994	CN2178958Y Multifunction electricity leakage trip apparatus
10/05/1994	CN2178957Y Safety device for electrical equipment of household
10/05/1994	CN2178956Y Safety device for electrical equipment of household
10/05/1994	CN2178952Y Multifunction electrical equipment protected plug
10/04/1994	US5353188 Overcurrent detector circuit for a circuit-breaker
09/1994
09/29/1994	WO1994022197A1 Arrangement for disconnecting branches of a low voltage supply network under short circuit conditions
09/29/1994	WO1994022025A1 Plant parameter detection by monitoring of power spectral densities
09/28/1994	EP0617499A1 Power supply circuit
09/28/1994	EP0617498A1 Safety system for protecting cables and devices from fire producing faults through the use of a guard lead causing the tripping of highly sensitive differential circuit breakers
09/28/1994	CN1092868A Multifunctional intelligent kilowatt-hour meter, its tariff managing system and method
09/27/1994	US5351181 Low cost active power line conditioner
09/27/1994	US5351038 Quick trip circuit breaker locator
09/22/1994	DE4308986A1 Protective circuit breaker
09/21/1994	EP0615667A1 Arrangement for the off-mains switching of control devices.
09/21/1994	EP0449822B1 Electronic control and protection device
09/21/1994	CN2178036Y High-pressure open-circuit photoelectric transfer protector
09/21/1994	CN2178007Y Multifunctional safety socket for single phase electrical appliance
09/21/1994	CN1025975C Comprehensive protective system for coal mine long distance illuminating signal
09/20/1994	US5349490 Negative sequence directional element for a relay useful in protecting power transmission lines
09/20/1994	US5348148 Container for a hanger-supported garment
09/15/1994	WO1994020892A1 Low cost active power line conditioner
09/15/1994	WO1994020890A1 Automatic venting system for a vehicle
09/15/1994	DE4307859A1 Safety shutdown of electric devices
09/15/1994	CA2155663A1 Low cost active power line conditioner
09/14/1994	EP0615327A2 Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault
09/14/1994	EP0615266A1 Electric protection device with thermal detector
09/14/1994	EP0545926B1 Current relay circuit
09/14/1994	CN1092213A A shortcircuit limiting protector
09/13/1994	US5347418 Fuse blowout detector circuit
09/13/1994	US5347214 Method and device for setting the short circuit moment in electric motors, particularly in servomotors
09/08/1994	DE4323356C1 Electronic release unit for a power circuit breaker
09/08/1994	DE4306231A1 Contact arrangement for a residual current device (earth leakage current circuit breaker)
09/07/1994	EP0614259A1 Differential circuit breaker for protection against fault currents and overvoltages
09/07/1994	EP0614049A1 Voltage supply for a redundant computer of a control device
09/07/1994	EP0538298A4 A switchboard
09/07/1994	CN2176614Y Automatic switch for leakage, overvoltage, overcurrent and short circuit protections
09/07/1994	CN2176613Y Electric power measuring monitor
09/07/1994	CN2176612Y AC contactor with phase-failure and low voltage preventing
09/06/1994	CA2023242C Water sensing type power breaker circuit
09/01/1994	WO1994019854A1 Electrical supply safety plug
08/1994
08/31/1994	EP0613018A1 Device for monitoring and measuring the insulation of an electrical network
08/31/1994	EP0612444A1 Personnel protection system for electrical power connections.
08/31/1994	CN2175978Y 安全插座 Secure Sockets
08/30/1994	US5343351 Starter motor protection circuit with relay protection
08/30/1994	US5343350 Circuit configuration for protecting the on-board electrical system of a motor vehicle
08/30/1994	US5343192 Fuse or circuit breaker status indicator
08/30/1994	US5343137 Apparatus to prevent complete battery discharge
08/27/1994	CA2116496A1 Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault
08/25/1994	DE4304690C1 Electronic starting safety circuit for the motor drive of an electrical appliance
08/24/1994	EP0611510A1 Device for connection and disconnection of an apparatus to a current source
08/24/1994	CN2175482Y Protection and alarming arrangement for phase-interruption for three-phase electric motor
08/24/1994	CN2175481Y Transformer with loss-free function
08/24/1994	CN2175480Y Protective arrangement for domestic electricity use
08/23/1994	US5341282 Circuit for detecting short-circuiting of inductive load drive devices
08/23/1994	US5341271 Surge arrester fault indicator
08/23/1994	US5341266 Protective device in electrically-powered apparatus and equipment
08/23/1994	US5341265 Method and apparatus for detecting and responding to downed conductors
08/23/1994	US5340964 Method and apparatus for monitoring electrical loads
08/23/1994	CA2026789C Power feed circuit for digital communications terminal equipment
08/20/1994	CA2115897A1 Electrical supply safety plug

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