| 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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| 02/01/2012 | CN202134899U 电机过载保护器 Motor overload protection |
| 02/01/2012 | CN202134898U 一种直流无刷电机用的堵转过流保护装置 A DC brushless motor with locked rotor overcurrent protection devices |
| 02/01/2012 | CN202134897U 一种用于纸巾生产设备上的动力传动过载保护机构 A power transmission overload protection mechanism used on tissue production equipment |
| 02/01/2012 | CN202134896U 三相保护继电器 Three-phase protection relays |
| 02/01/2012 | CN202134895U 电机简易自动保护器 Easy auto motor protector |
| 02/01/2012 | CN202134894U 电气设备节电电路 Electrical equipment saving circuit |
| 02/01/2012 | CN202134893U 高反电动势同步电机的保护装置 High back EMF protection device synchronous motors |
| 02/01/2012 | CN202134892U 一种智能温度控制的干式变压器 An intelligent temperature-controlled dry-type transformers |
| 02/01/2012 | CN202134891U 一种并联混合型有源电力滤波器保护系统 A hybrid parallel active power filter protection system |
| 02/01/2012 | CN202134890U Protective device of converter station of special HVDC |
| 02/01/2012 | CN202134889U 无刷电动机霍尔传感器防过压反压保护装置 Brushless motor Hall sensor anti overvoltage protection device backpressure |
| 02/01/2012 | CN202134635U Battery protector used for pure electric vehicle |
| 02/01/2012 | CN102341983A Method and apparatus for improving the performance of an inverter |
| 02/01/2012 | CN102340253A Power supply converting device with regulatable lead-edge-blanking time and overcurrent protection method thereof |
| 02/01/2012 | CN102340246A Thick-film magnetic isolation direct current solid-state power controller |
| 02/01/2012 | CN102340168A Portable emergency starting power supply |
| 02/01/2012 | CN102340165A Electrodynamic force vehicle power supply management system |
| 02/01/2012 | CN102340133A Method and device for protecting traction feeder line of single-phase power-frequency alternating-current electrified railway |
| 02/01/2012 | CN102340132A Protection system having reduced energy let-through mode and zone selectivity |
| 02/01/2012 | CN102340131A Centrally controlled protection system having reduced energy let-through mode |
| 02/01/2012 | CN102340130A Method and system for power quality protection |
| 02/01/2012 | CN102340129A Switching power supply and overvoltage protection circuit thereof |
| 02/01/2012 | CN102340128A Power-dependant mains under-voltage protection |
| 02/01/2012 | CN102340127A Digitalized comprehensive motor protector |
| 02/01/2012 | CN102340126A A power and control unit for a low or medium voltage apparatus |
| 02/01/2012 | CN101789584B 突变量采样值差动保护方法和差动继电器 Mutation sampled value differential protection method and differential relay |
| 02/01/2012 | CN101752906B 高压开关智能化控制系统及其控制方法 High-voltage switchgear intelligent control system and control method |
| 02/01/2012 | CN101714755B 一种分离式户外高压开关 An isolated-type outdoor high-voltage switch |
| 02/01/2012 | CN101630489B 一种液晶屏供电电路 A liquid crystal display power supply circuit |
| 02/01/2012 | CN101572325B 电池组 Battery |
| 02/01/2012 | CN101552076B 不饱和树脂塑封式防爆电磁线圈 Unsaturated resin plastic explosion-proof solenoid |
| 01/31/2012 | US8107268 Passive lossless snubber cell for a power converter |
| 01/31/2012 | US8107261 Powering unit with full bridge and wide adjusting range circuit |
| 01/31/2012 | US8106633 Generator set control system |
| 01/31/2012 | US8106615 Pump jack pump-off control method and pump jack control apparatus |
| 01/26/2012 | WO2012012517A2 Sensing and control electronics for a power grid protection system |
| 01/26/2012 | WO2012012426A2 Continuous uninterruptable ac grounding system for power system protection |
| 01/26/2012 | WO2012010572A1 Method for operating an output stage in a controller |
| 01/26/2012 | WO2012010353A1 Method and arrangement for capacitor bank protection |
| 01/26/2012 | WO2011126346A3 Solar photovoltaic device and a control method therefor |
| 01/26/2012 | WO2011095375A3 Circuit assembly for overvoltage limiting of an excitation coil of a synchronous machine having fast de-excitation |
| 01/26/2012 | US20120020124 Apparatus for detecting short-circuit of output diode in converter |
| 01/26/2012 | US20120020118 Switching power supply apparatus |
| 01/26/2012 | US20120019963 Device and method for eliminating transformer excitation losses |
| 01/26/2012 | US20120019183 Drive control system |
| 01/26/2012 | US20120019181 Power converter for rotating electric machine |
| 01/26/2012 | DE102010038309A1 Verfahren zum Treiben einer Endstufe in einem Steuergerät Method for driving a power amplifier in a control unit |
| 01/26/2012 | DE102010032717A1 Method for operating of power semiconductor component e.g. insulated gate bipolar transistor (IGBT) , involves limiting gate-emitter voltage of power semiconductor component to critical voltage during starting phase of component |
| 01/26/2012 | CA2805652A1 Continuous uninterruptable ac grounding system for power system protection |
| 01/26/2012 | CA2805587A1 Sensing and control electronics for a power grid protection system |
| 01/25/2012 | EP2408569A1 Monitoring method and monitoring device for an electrostatic coating plant |
| 01/25/2012 | CN202127293U Synthesized monitor for low-voltage power distribution room |
| 01/25/2012 | CN202127288U Primary equipment maintenance state identifying device for bus TV of intelligent transformer substation |
| 01/25/2012 | CN202127283U Circuit backup power automatic switching protection device |
| 01/25/2012 | CN202127248U Electric energy optimizing device of power-driven drilling machine |
| 01/25/2012 | CN202127241U Electric leakage protection and warning device of single-phase switch |
| 01/25/2012 | CN202127240U Overcharging and over-discharging protection circuit of lithium battery |
| 01/25/2012 | CN202127239U Crow bar protection device of double feed rectifier of wind power-generating system |
| 01/25/2012 | CN202127238U Torque overload monitoring and controlling device |
| 01/25/2012 | CN202127237U Container type automatic powering on and off and power supply switching device of gas driven generator set |
| 01/25/2012 | CN202127236U Furnace transformer protecting, measuring and controlling device |
| 01/25/2012 | CN202127235U Shell structure used for protecting measuring and control circuit in electric stove transformer |
| 01/25/2012 | CN202127234U Protection unit of double digital signal processors (DSPs) and hardware platform interface (HPI) interface communication series capacitor compensation devices |
| 01/25/2012 | CN202127233U Power grid fault measuring and controlling device |
| 01/25/2012 | CN102334269A Power factor correction circuit with overcurrent protection |
| 01/25/2012 | CN102332833A IPM (Intelligent Power Module)-based universal power converter for switched reluctance motor |
| 01/25/2012 | CN102332828A Simple micro fixed positive output high voltage power circuit |
| 01/25/2012 | CN102332753A Intelligentized switch cabinet integrative monitoring system |
| 01/25/2012 | CN102332710A High-performance voltage timelike distribution automation terminal |
| 01/25/2012 | CN102332709A Equivalent high-voltage direct-current transmission direct-current protection digital simulation method and system |
| 01/25/2012 | CN102332708A Relay protection method in distribution system |
| 01/25/2012 | CN102332707A Earth fault signal measuring method and protective device for ungrounded system |
| 01/25/2012 | CN102332706A Protection circuit and control method for power shortage of car storage battery |
| 01/25/2012 | CN102332705A Short-circuit protection circuit of insulated gate bipolar translator (IGBT) of high-power frequency conversion device |
| 01/25/2012 | CN102332704A Switching power supply input undervoltage or overvoltage protection circuit |
| 01/25/2012 | CN102332703A Electric protection method for shore power system |
| 01/25/2012 | CN102331541A Distribution system break line detection device, system and method, meter reading device, relay device and control device |
| 01/25/2012 | CN101707356B DC protection method by using analog AC rectification in DC supply system |
| 01/25/2012 | CN101707352B Method and device thereof for fault detection/protection for SVC system |
| 01/25/2012 | CN101552451B Switch power supply cycle-by-cycle wave over-voltage protection circuit |
| 01/25/2012 | CN101467327B Charging/discharging circuit for secondary battery, and battery pack |
| 01/25/2012 | CN101340103B Overvoltage protection system, battery set and electronic device |
| 01/25/2012 | CN101291114B Power switching device |
| 01/25/2012 | CN101247100B Electric tool control method and electric tool using the same |
| 01/25/2012 | CN101213713B Method and arrangement for triggering a series spark gap |
| 01/24/2012 | US8102687 Control apparatus for controlling power conversion apparatus |
| 01/24/2012 | US8102684 Relief circuit |
| 01/24/2012 | US8102683 Phase angle measurement of a dimming circuit for a switching power supply |
| 01/24/2012 | US8102129 Method and circuit for short-circuit and over-current protection in a discharge lamp system |
| 01/24/2012 | US8100163 Apparatus and method for controlling barrier movement |
| 01/24/2012 | CA2326434C Distributed logic in multiple protective relays |
| 01/19/2012 | US20120014146 Power-dependant mains under-voltage protection |
| 01/19/2012 | US20120013285 Motor drive component verification system and method |
| 01/19/2012 | US20120013284 Parallel motor drive disable verification system and method |
| 01/19/2012 | DE102010031456A1 Verfahren zur sicherheitsbedingten Abschaltung eines elektrischen Netzes A method for safety-related shutdown of an electrical network |
| 01/19/2012 | CA2765045A1 Light-emitting-diode (led) protection circuit |
| 01/18/2012 | EP2408080A2 Protection system having reduced energy let-through mode and zone selectivity |
| 01/18/2012 | EP1247324B2 Exciter and electronic regulator for superconducting rotating machinery |
| 01/18/2012 | CN202121543U AC motor driving device with vector control used in variable-pitch control system |
| 01/18/2012 | CN202121535U Novel step-down starting circuit using autotransformer |