| 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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| 05/08/2013 | CN103094887A Overcurrent and over-temperature protection control circuit |
| 05/08/2013 | CN103094886A Electrical car lithium battery unit protecting system based on singlechip control |
| 05/08/2013 | CN103094885A Converter system and power electronic system comprising such converter systems |
| 05/08/2013 | CN103094884A System and method of power conversion system on condition of open circuit and/or short circuit |
| 05/08/2013 | CN103094883A Intrinsic safety type power circuit and device with intrinsic safety type power circuit |
| 05/08/2013 | CN103094882A Three-phase large-power immersible pump motor protection system |
| 05/08/2013 | CN103094881A Digital transformer protection and monitoring device |
| 05/08/2013 | CN103094880A Domain relay protection |
| 05/08/2013 | CN103091601A Zero sequence direction security acceleration method based on substation area information |
| 05/08/2013 | CN102185555B Digitalized alternating-current voltage and speed regulation device |
| 05/08/2013 | CN101944718B Overload protective device of electric furnace transformer |
| 05/08/2013 | CN101858959B Simulation test method for influence of sampling data delay deviation on relay protective device |
| 05/08/2013 | CN101409510B Switching mode power supply apparatus and power supply method thereof |
| 05/07/2013 | US8436713 Door drive |
| 05/07/2013 | US8436586 No drain power saver |
| 05/07/2013 | US8436573 Power conversion device |
| 05/07/2013 | US8436561 Method and device for monitoring the startup of an electric drive |
| 05/02/2013 | WO2013060591A1 Improvement of the motor protection of a dc drive |
| 05/02/2013 | WO2013060024A1 Systems and methods for using in recovering converter after grid fault event |
| 05/02/2013 | WO2013060019A1 Systems and methods for using in identifying and responding to type of grid fault event |
| 05/02/2013 | US20130107401 Time Delay With Control Voltage Sensing |
| 05/02/2013 | US20130107400 System for monitoring a machine using a digital protective relay |
| 05/02/2013 | DE102012219428A1 Grenzschalter-Schnittstellenschaltung Limit switch interface circuit |
| 05/02/2013 | DE102011085516A1 Verfahren und Vorrichtung zur Spannungsmessung in einem dreiphasigen Spannungsnetz und externer NA-Schutz Method and apparatus for measuring voltage in a three-phase voltage system and with external protective NA |
| 05/02/2013 | DE102011085437A1 Circuit arrangement, particularly for controlling of voltage supply source, has limiting element that is aligned to limit current flow between inlet and outlet, and is aligned to break current flow between inlet and outlet |
| 05/02/2013 | DE102011085253A1 Verbesserung des Motorschutzes eines Gleichstromantriebs Improvement of motor protection of a DC drive |
| 05/02/2013 | CA2851961A1 Systems and methods for using in recovering converter after grid fault event |
| 05/01/2013 | EP2587606A2 Method and apparatus for preventing overheating in an electronically commutated motor assembly |
| 05/01/2013 | EP2587605A2 Active current surge limiters with voltage detector and relay |
| 05/01/2013 | EP2587603A2 Active current surge limiters with inrush current anticipation |
| 05/01/2013 | CN202918187U High power switch power supply possessing soft start and fault protection |
| 05/01/2013 | CN202918185U Active harmonic suppression device |
| 05/01/2013 | CN202918139U Motor with property of overheating protection |
| 05/01/2013 | CN202918046U Intelligent spare power auto-switching device based on IEC61850 networking |
| 05/01/2013 | CN202918018U Power supply module of lithium ion power battery for mine motor vehicle |
| 05/01/2013 | CN202917999U Constant temperature fast heating power supply device applied to electric heating gloves and socks |
| 05/01/2013 | CN202917965U Busbar residual voltage maintaining device |
| 05/01/2013 | CN202917961U Self-recovery type over-voltage and under-voltage protection circuit breaker |
| 05/01/2013 | CN202917960U Chained-type SVG control device adopting redundancy control |
| 05/01/2013 | CN202917959U Lightning protection module |
| 05/01/2013 | CN202917958U Bus differential protection system for high-voltage direct-current flexible closed-loop intelligent power distribution network |
| 05/01/2013 | CN202917957U Relay switching-off and switching-on control circuit for ammeter and intelligent ammeter |
| 05/01/2013 | CN202917956U Storage battery protective device and storage battery device |
| 05/01/2013 | CN202917955U Mobile power supply cell protection circuit |
| 05/01/2013 | CN202917954U Input under-voltage/ overvoltage protection circuit for invertion power supply |
| 05/01/2013 | CN202917953U Phase sequence protection relay circuit for electric auger bulk feed conveying equipment |
| 05/01/2013 | CN202917952U Alternating current (AC) servo driver |
| 05/01/2013 | CN202917951U Alternating current (AC) servo driver |
| 05/01/2013 | CN202917950U Novel power transformer control system with direct current magnetic bias compensation function |
| 05/01/2013 | CN103081273A 风力涡轮机 Wind turbine |
| 05/01/2013 | CN103078520A Frequency converter device and over-current protection method thereof |
| 05/01/2013 | CN103078482A Overcurrent detecting circuit and frequency converter device with same |
| 05/01/2013 | CN103078478A Controller for switching power supply and switching power supply |
| 05/01/2013 | CN103078384A Uninterruptible power supply |
| 05/01/2013 | CN103078354A Backup battery protection system |
| 05/01/2013 | CN103078304A Protection method of power distribution network for coal mine |
| 05/01/2013 | CN103078303A Differential protection method capable of automatically switching protection domains |
| 05/01/2013 | CN103078302A Automatic network reconstruction implementation method for power grid feeder line |
| 05/01/2013 | CN103078301A Override trip protection system and method for coal mine power network |
| 05/01/2013 | CN103078300A Mine intrinsic safety lithium battery power supply system |
| 05/01/2013 | CN103078299A Phase-shift controlled full-bridge half-cycle trip protection circuit and control method thereof |
| 05/01/2013 | CN103078298A Overcurrent cascade protection circuit of IGBT (Insulated Gate Bipolar Translator) and control method thereof |
| 05/01/2013 | CN103078297A Phase-shift controlled full-bridge single-cycle trip protection circuit and control method thereof |
| 05/01/2013 | CN103078296A Current detection control circuit for direct current bus |
| 05/01/2013 | CN103078295A Digital transformer differential protection device and protection method thereof |
| 05/01/2013 | CN103078294A Overcurrent protection circuit for controller of brushless direct current motor |
| 05/01/2013 | CN103078293A Temperature control device of dry type transformer in electric power measurement device |
| 05/01/2013 | CN103078289A Parallel multi-end direct-current power transmission line traveling-wave protection setting value setting method |
| 05/01/2013 | CN103072496A Automatic single-track railway overhead line system handover power supply method and device |
| 05/01/2013 | CN103072125A Brake control method of electric tool |
| 05/01/2013 | CN102013723B Three-phase voltage stabilizer for long-distance temporary power supply of single-phase generator |
| 05/01/2013 | CN101902033B Intelligent protection device with zero pressure drop |
| 05/01/2013 | CN101873062B Power supply and power supply system with a plurality of power supplies |
| 05/01/2013 | CN101841241B Assembly with DC electricity supply units switch in parallel |
| 05/01/2013 | CN101615782B Method for protecting MCR of circuit breaker |
| 04/30/2013 | US8432711 Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance |
| 04/30/2013 | US8432656 Method for feedback control and related feedback control loop and voltage regulator |
| 04/30/2013 | US8432653 ESD protection device |
| 04/30/2013 | US8432649 Abnormal current detecting circuit for circuit breaker |
| 04/30/2013 | US8432648 Discharge device for vehicle |
| 04/30/2013 | US8432647 Power distribution arrangement |
| 04/30/2013 | US8432118 Inverter and a method for controlling an electric machine |
| 04/30/2013 | US8432113 Brushless fan motor control circuit assembly |
| 04/25/2013 | WO2013058558A2 Battery pack with improved safety |
| 04/25/2013 | WO2013056751A1 Method and system for detecting a failed rectifier in an ac/dc convertor |
| 04/25/2013 | WO2013056294A1 Protective circuit for an electrically floating photovoltaic array |
| 04/25/2013 | US20130103349 Power supply unit with service life expiration alarm and method thereof |
| 04/25/2013 | US20130100570 Lightning current transfer assembly for a wind turbine |
| 04/25/2013 | US20130100557 Protecting circuit and control circuit for reducing leakage current |
| 04/25/2013 | US20130099755 Lithium battery protection circuitry |
| 04/25/2013 | US20130099596 Control Device of Power Supply Circuit |
| 04/25/2013 | US20130099595 Control Device of Power Supply Circuit |
| 04/25/2013 | US20130099594 Control Device of Power Supply Circuit |
| 04/25/2013 | DE102011054770A1 Method for continuous real-time detection of unintentional isolated operation during supplying of current signal into low voltage system, involves carrying out detection of frequency range and/or calculation of impedance in real-time |
| 04/25/2013 | DE102008059958B4 Einzelzelle und Batterie mit einer Mehrzahl elektrisch seriell und/oder parallel miteinander verbundener Einzelzellen And single cell battery having a plurality of electrically in series and / or parallel interconnected single cells |
| 04/24/2013 | CN202906815U Electric tool with rotation speed switching mechanism |
| 04/24/2013 | CN202906807U Dual-voltage automatic changeover switch |
| 04/24/2013 | CN202906766U Mining intrinsic-safe power supply |
| 04/24/2013 | CN202906765U Thyristor rectifying device for electrophoresis power |
| 04/24/2013 | CN202906677U 电机 Motor |