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)
10/2012
10/31/2012CN202513554U Short-circuit protection apparatus of wind energy converter
10/31/2012CN202513548U Novel solid-state power source phase sequence protector with output isolation
10/31/2012CN202513547U Selective electric leakage protection device for coal mine low-voltage power grid
10/31/2012CN202513546U Commercial power voltage bidirectional off-limit alarm protecting device
10/31/2012CN202513545U Power supply protection device for household electrical appliance
10/31/2012CN202513544U Over-voltage leakage protector
10/31/2012CN202513543U Overcurrent protection circuit
10/31/2012CN202513542U Student dormitory intelligent power limiter
10/31/2012CN202513482U Energy-saving box-type substation
10/31/2012CN1773800B Electric Shock protector
10/31/2012CN102763297A Method of monitoring the grading margin between time-current characteristics of intelligent electronic devices
10/31/2012CN102761272A A power circuit and a leakage circuit-breaker employing the same
10/31/2012CN102761240A Power factor corrector realized in an intelligent embedded way and control method thereof
10/31/2012CN102761173A Intelligent electric meter with functions of leakage remote monitoring and protection
10/31/2012CN102761116A Triple suppression circuit of power grid abnormity
10/31/2012CN102761112A Systems and methods for testable current limiting with hiccup reset
10/31/2012CN102761105A Overcurrent driving protection device and method for PWM control circuit
10/31/2012CN102761102A Protection system for power-cut illuminating device
10/31/2012CN102761099A Protection device with synchronization function in digital substation and synchronization method
10/31/2012CN102761098A Device and method for residual current protection
10/31/2012CN102761097A Direct current leakage protective circuit
10/31/2012CN102761096A Undervoltage-overvoltage protection device and method
10/31/2012CN102761095A Device and method for undervoltage-overvoltage protection
10/31/2012CN102755697A Medical ultrasonic physiotherapy instrument ultrasonic emission instrument and no-load protection method thereof
10/31/2012CN101938117B Current differential protection method for smart distribution network
10/31/2012CN101895155B Energy storage device with failure detection and automatic reconstruction function and reconstructing method
10/31/2012CN101777834B Automatic voltage-countering power supply device and method
10/31/2012CN101527445B Protection control device
10/31/2012CN101227063B Intelligent electronic device with integrated pushbutton for use in power substation
10/30/2012US8300436 Device for protection of power factor correction in three phase power supply and control method thereof
10/30/2012US8300375 Monitoring method, circuit, and system
10/30/2012US8300374 Method for limiting current and circuit therefor
10/30/2012US8300373 Voltage triggered transient blocking unit
10/30/2012US8300372 Apparatus, system, and/or method for protection and control of an electrical device
10/30/2012US8300369 System and method for polyphase ground-fault circuit-interrupters
10/30/2012US8300368 Circuit interrupting device with end-of life testing, reverse wiring and high voltage surge capability
10/30/2012US8299799 Electrical device with miswire protection and automated testing
10/30/2012US8299767 Dynamic safe operating area control
10/30/2012CA2664503C Apparatus, system, and method for sharing output contacts across multiple relays
10/26/2012WO2012143619A1 An arrangement to monitor dc circuit condition
10/26/2012WO2012143245A1 Arrangement comprising a power converter
10/26/2012CA2833827A1 An arrangement to monitor dc circuit condition
10/25/2012US20120268855 Surge protection apparatus and method using the same
10/25/2012US20120268852 Systems and methods for testable current limiting with hiccup reset
10/24/2012EP2515411A1 Automobile charging apparatus
10/24/2012EP2515404A2 Circuit assembly for isolating an electrical device from the mains
10/24/2012EP2514058A1 Methods and arrangements in a power supply system
10/24/2012CN202503305U Photovoltaic grid-connected inverter circuit
10/24/2012CN202503277U Short-circuit current limiting device
10/24/2012CN202503272U Breaker under-voltage protection apparatus
10/24/2012CN202503269U Lithium battery protection circuit and anti-explosion lithium battery adopting same
10/24/2012CN202503267U Intrinsic safety type output short circuit protection device of high power switch converter
10/24/2012CN202503266U Motor voltage loss restarting device
10/24/2012CN202503265U Motor overheating protection and alarm device
10/24/2012CN202503263U Leakage protector having phase line switching function
10/24/2012CN202503262U Electric leakage protection device
10/24/2012CN202503261U Protective device of input voltage fluctuation
10/24/2012CN202503260U Direct current power supply short circuit and overload protection device
10/24/2012CN202503259U Power supply circuit of RS485 remote water meter
10/24/2012CN202503258U Wide-voltage phase sequence, in-phase and loss-of-phase protector
10/24/2012CN202503257U Self-powered intelligent protection apparatus
10/24/2012CN202503256U Ground wire alarm vehicle-mounted power supply protector
10/24/2012CN202503255U Electronic circuit system control device
10/24/2012CN102753982A A method of subsynchronous resonance detection
10/24/2012CN102752909A Power Supply
10/24/2012CN102752903A Light-emitting diode (LED) driving circuit and protection circuit thereof
10/24/2012CN102751708A Self-adaptive sampling delay compensation method of differential protection
10/24/2012CN102751707A Overcurrent and overvoltage protector with bimetallic strip temperature switch
10/24/2012CN102751706A Undervoltage protection circuit of LED (light-emitting diode)-driven chip
10/24/2012CN102751705A Electronic device with overvoltage protection and overvoltage protection method thereof
10/24/2012CN102751701A Electric motor current interference prevention method
10/24/2012CN102751698A Overvoltage protection circuit, power module and overvoltage protection method
10/24/2012CN102751697A Direct-current power supply over-current fuse wire
10/24/2012CN102751696A Chip over-current protection circuit with adjustable delay time
10/24/2012CN102751695A Alarming protection device and alarming protection method for alternating-current contactor main contact adhesion
10/24/2012CN102751694A Device and method for controlling neutral wire breaking protection
10/24/2012CN101600285B Liquid crystal display, backlight module and drive method thereof
10/23/2012US8295024 Surge energy transfer circuit
10/23/2012US8295023 System and method for detection of multiple current limits
10/23/2012US8295022 Overstress protection apparatus and method
10/23/2012US8295021 Overcurrent protection apparatus for load circuit
10/23/2012US8295019 Polarity reversal protection unit
10/23/2012US8295018 Transmission-line-based ESD protection
10/23/2012US8295017 Electrical wiring device
10/23/2012US8295016 Circuit interrupter and receptacle including improved contact configuration
10/23/2012US8294442 Low dropout regulator circuit without external capacitors rapidly responding to load change
10/23/2012US8294403 Methods and systems for determining and displaying a time to overload of machine tools
10/23/2012CA2693300C Charging monitor
10/23/2012CA2614245C An apparatus and method for identifying a loss of a current transformer signal in a power system
10/22/2012DE202011050696U1 Sicherungsvorrichtung für photovoltaische (PV-)Generatoren Safety device for photovoltaic (PV) generators
10/18/2012WO2012141931A2 Electrical load control with fault protection
10/18/2012WO2012140153A1 Method and apparatus for determining a fault current portion in a differential current
10/18/2012WO2012139678A1 Monitoring device for an isolated network of a photovoltaic system
10/18/2012US20120262832 Rackmount i/o signal protector assembly for surge protection
10/18/2012DE102011017422A1 Protection device for power generator used during operation of gas heating boiler, performs power shutdown at leakage current of power generator
10/18/2012DE102011007339A1 Supply circuit arrangement for creating onboard network voltage from e.g. fuel cell of hybrid car, has reverse polarity protection circuit for selectively controlling switch based on forward voltage across inverse diode
10/18/2012DE102011002084A1 Verfahren und Vorrichtung zur Bestimmung eines Fehlerstromanteils an einem Differenzstrom Method and apparatus for determining a fault current interest in a differential current
10/18/2012CA2833146A1 Electrical load control with fault protection
10/17/2012EP2511998A1 Assembly for earth connection surveillance in an alternating current circuit and power supply assembly with such an earth connection surveillance
10/17/2012EP2511711A1 Load monitoring in an electricity supply system
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