| 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) |
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| 07/24/2013 | CN103219902A Safe switching power supply |
| 07/24/2013 | CN103219803A 开关柜监测系统 Switchgear monitoring system |
| 07/24/2013 | CN103219782A High-power battery charging device capable of preventing reverse current charging and battery reversal |
| 07/24/2013 | CN103219778A 5V output mobile power supply |
| 07/24/2013 | CN103219776A High-power battery charging device capable of preventing battery reversal |
| 07/24/2013 | CN103219716A Protection method and device for short circuit and overload of feed line of power supply system of transformer substation |
| 07/24/2013 | CN103219715A Line inter-phase fault relay protection method based on fault impedance phase characteristics |
| 07/24/2013 | CN103219714A Line inter-phase fault relay protection method based on voltage drop phase characteristics |
| 07/24/2013 | CN103219713A Electric transmission line phase fault distance protecting method |
| 07/24/2013 | CN103219712A Power transmission line one-phase malfunction property identification method based on natural frequency |
| 07/24/2013 | CN103219711A Grounding fault distance protecting method of double circuit lines on same tower |
| 07/24/2013 | CN103219710A Assessment method for 35/0.4kV rection station area protection equipment selection |
| 07/24/2013 | CN103219709A Battery protective circuit with single charge-discharge power tube |
| 07/24/2013 | CN103219708A Battery protecting circuit, battery protecting device, and battery pack |
| 07/24/2013 | CN103219707A Leakage protection circuit of vehicle-mounted inverter and corresponding vehicle-mounted inverter |
| 07/24/2013 | CN103219706A IGBT (Insulated Gate Bipolar Transistor) over-current lock-in protection circuit |
| 07/24/2013 | CN103219705A Method and device for short circuit protection of half-bridge resonant converter |
| 07/24/2013 | CN103219704A Motor protection method and device |
| 07/24/2013 | CN102427274B Method for acquiring real-time states of power grid element |
| 07/24/2013 | CN102278605B Multifunctional movable illuminating light |
| 07/24/2013 | CN102185289B Bus coupler charging protection method and system |
| 07/24/2013 | CN102097787B Motor phase sequence default phase protector adopting resistive-capacitive (RC) phase-shift circuit |
| 07/24/2013 | CN101836355B Method for detecting a load drop |
| 07/24/2013 | CN101796702B Method and system for limiting a current in an alternating current generator |
| 07/23/2013 | US8493696 Uninterruptible power supply and method for tripping thereof |
| 07/23/2013 | US8493016 Semiconductor circuit device including switching element |
| 07/23/2013 | US8493012 Protection relay, electrical switching apparatus, and system for determining and outputting fault current available at a load and incident energy or personal protective equipment level operatively associated therewith |
| 07/23/2013 | CA2657070C Fault clearing method for permanent magnet machines |
| 07/18/2013 | WO2013106253A1 Methods, apparatuses and systems for monitoring for exposure of electronic devices to moisture and reacting to exposure of electronic devices to moisture |
| 07/18/2013 | WO2013106150A1 System, apparatus, and method for reducing inrush current in a three-phase transformer |
| 07/18/2013 | US20130184159 Cryogenic power control |
| 07/18/2013 | US20130182470 Power Module Package Having a Multi-Phase Inverter and Power Factor Correction |
| 07/18/2013 | US20130182355 Connection device for transformer substation modules |
| 07/18/2013 | US20130182354 Overvoltage protection during gcu failure |
| 07/18/2013 | US20130182353 Voltage regulator over-voltage detection system, method and apparatus |
| 07/18/2013 | DE19748627B4 Elektronisches Überlastrelais Electronic Overload Relays |
| 07/17/2013 | EP2614598A1 Method of teleprotection of a line carrier current electrical network |
| 07/17/2013 | EP2614566A1 Method and system for disconnecting a generator from a power system |
| 07/17/2013 | CN203071846U Explosion-proof type reversible soft starter provided with intelligent gating |
| 07/17/2013 | CN203071810U Switching power supply |
| 07/17/2013 | CN203071571U Intelligent monitoring device for distributed boundary switches |
| 07/17/2013 | CN203071570U Multifunctional low-voltage cable junction box |
| 07/17/2013 | CN203071569U Closing coil protection apparatus |
| 07/17/2013 | CN203071568U IGBT (Insulated Gate Bipolar Translator) driving?and?protection?circuit |
| 07/17/2013 | CN203071567U Linear high voltage LED drive protection circuit |
| 07/17/2013 | CN203071566U Protection circuit of lithium battery pack |
| 07/17/2013 | CN203071565U Power saving circuit for lithium battery protection board |
| 07/17/2013 | CN203071564U Access control device of storage battery |
| 07/17/2013 | CN203071563U Integrated protection device for electromotor |
| 07/17/2013 | CN203071562U Electric spray gun protecting device |
| 07/17/2013 | CN203071561U Device for detecting faults of motor controller pre-charging circuit |
| 07/17/2013 | CN203071560U Motor monitoring protection device |
| 07/17/2013 | CN203071559U Power transformer overcurrent over-temperature automatic protection apparatus |
| 07/17/2013 | CN203071558U Multi-function distribution transformation overload intelligent protective device |
| 07/17/2013 | CN203071557U Distribution transformer overvoltage/undervoltage protector |
| 07/17/2013 | CN203071556U Inductive load turn-off protection circuit |
| 07/17/2013 | CN203070694U LED (light-emitting diode) display system with over-current protection device |
| 07/17/2013 | CN203070129U Control circuit of bean food making machine |
| 07/17/2013 | CN103210573A Structure for output-stage film capacitor in power conditioner |
| 07/17/2013 | CN103208800A Real-time monitoring system and method for power grid |
| 07/17/2013 | CN103208788A Intelligent dynamic power distribution network neutral-point grounding method and complete device |
| 07/17/2013 | CN103208787A Mixed line self-adaption reclosing based on fault direction distinguishing principle |
| 07/17/2013 | CN103208786A Rapid protection system of electric power substation |
| 07/17/2013 | CN103208785A Protective Circuit For A Rechargeable Battery Pack |
| 07/17/2013 | CN103208784A Battery protection circuit and method thereof |
| 07/17/2013 | CN103208783A Overvoltage protection method for power capacitor bank in harmonic wave environment |
| 07/17/2013 | CN103208782A Comprehensive detection and electric protection device for power frequency and variable frequency power supplies |
| 07/17/2013 | CN103208781A Control circuit with overheat protection function |
| 07/17/2013 | CN103208780A Direct current motor control circuit with heat protection function |
| 07/17/2013 | CN103208779A Differential protection system of large-power motor and differential protection method thereof |
| 07/17/2013 | CN103208778A Method for protecting high-capacity energy storage system |
| 07/17/2013 | CN102255284B Method for realizing protection of transformer by comparing polarities of instantaneous values of current fault components |
| 07/17/2013 | CN102005735B Safety protection device for power battery pack |
| 07/17/2013 | CN101872990B Control strategy of storage battery non-damage rapid balanced charger |
| 07/17/2013 | CN101841181B Charger |
| 07/17/2013 | CN101535830B Preventing quench in a magnetic resonance examination system |
| 07/16/2013 | US8488348 Switch mode power supply apparatus having active clamping circuit |
| 07/16/2013 | US8488347 Semiconductor device using DC/DC converter |
| 07/16/2013 | US8488343 Switching mode power supply apparatus having passive clamp circuit |
| 07/16/2013 | US8488284 Transformer failure analysis system |
| 07/16/2013 | US8487705 Protection circuit for radio frequency power amplifier |
| 07/16/2013 | CA2736009C Arc flash protection with self-test |
| 07/11/2013 | WO2013023807A3 Operating state circuit for an inverter and method for adjusting operating states of an inverter |
| 07/11/2013 | DE102013000251A1 Dimmersteuerung mit Softstart-Überstromschutz Dimmer control with soft start-overcurrent protection |
| 07/10/2013 | EP2613428A2 Electric motor for driving a motor vehicle component |
| 07/10/2013 | EP2613427A2 Electric motor for driving a motor vehicle component |
| 07/10/2013 | EP2612410A1 Method and device for safely switching a photovoltaic system after differentiating the arc type |
| 07/10/2013 | EP2612337A1 Short-circuiting device for a photovoltaic array |
| 07/10/2013 | CN203057038U Coal mine air compressor flame-proof and intrinsically safe type electromagnetic starter |
| 07/10/2013 | CN203057037U Coal mine air compressor flame-proof and intrinsically safe type electromagnetic starter |
| 07/10/2013 | CN203056985U Automatically high-low voltage switching and controlling circuit and energy-saving inverter welder |
| 07/10/2013 | CN203056981U Access control system power supply |
| 07/10/2013 | CN203056975U Power source circuit of plasma cutting machine |
| 07/10/2013 | CN203056778U Single-three phase dual-purpose switching device of engine set |
| 07/10/2013 | CN203056677U Coal mine fan flame-proof type dual supply vacuum electromagnetic starter |
| 07/10/2013 | CN203056622U Intelligent charger control panel |
| 07/10/2013 | CN203056564U Ground choke flow control screen for oil-submersible electric pump machine set in-the-pit real time monitoring system |
| 07/10/2013 | CN203056561U Power box |
| 07/10/2013 | CN203056560U Fusing intelligent protection circuit of thyristors |
| 07/10/2013 | CN203056559U An IGBT hardware protection circuit of an induction cooker |