| 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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| 09/14/2011 | CN102185288A Current increment protection method capable of reflecting mean current change rate |
| 09/14/2011 | CN102185287A Fuse state monitoring protection device and protection method |
| 09/14/2011 | CN102185286A High-power insulated gate bipolar transistor (IGBT) redundancy driving protection circuit |
| 09/14/2011 | CN102185285A Protection configuration method for converter valve in flexible direct current power transmission system |
| 09/14/2011 | CN102185284A Converter protection method, converter and protector |
| 09/14/2011 | CN102185283A Method for sub-synchronous current calculation and sub-synchronous over-current and divergent protection of generator |
| 09/14/2011 | CN102185282A Overload protection device for electric capstan |
| 09/14/2011 | CN102185281A Method for compensating capacitance current in differential current of generator |
| 09/14/2011 | CN102185280A Dual-periodic adjustable variable-polarity square-wave voltage type rotor ground protection method |
| 09/14/2011 | CN102185279A Overvoltage protection device for neutral point of transformer |
| 09/14/2011 | CN102185278A Extra-high-voltage direct-current power transmission converter station protecting method |
| 09/14/2011 | CN102185277A Method and device for controlling preferential tripping of power grid at sea |
| 09/14/2011 | CN102185276A Protection relay, electrical switching apparatus, and system |
| 09/14/2011 | CN101604838B Method for optionally cutting off fault point of double branch circuits at low voltage side of transformer |
| 09/14/2011 | CN101414744B Grounding protection method for stator of dual-frequency injection type power generator |
| 09/14/2011 | CN101404407B Negative sequence direction pilot protection method for electric power transmission line in open-phase operation mode |
| 09/14/2011 | CN101385212B Method for limiting the excess force of a closing part which is actuated by an external force |
| 09/14/2011 | CN101227085B Method for ensuring distance protection backup segment without excess load influence |
| 09/13/2011 | US8018745 System and method providing over current and over power protection for power converter |
| 09/13/2011 | US8018705 Spark gap protection device |
| 09/13/2011 | US8018696 Tertiary lock system power unit |
| 09/13/2011 | US8018695 Fuel pump control apparatus |
| 09/13/2011 | US8018694 Over-current protection for a power converter |
| 09/13/2011 | CA2642314C Series surge suppression structure |
| 09/13/2011 | CA2499780C System and method for individual phase motor over voltage protection |
| 09/13/2011 | CA2463575C Protective relay capable of protection applications without protection settings |
| 09/09/2011 | WO2011108172A1 Inverter and overload protection method |
| 09/09/2011 | WO2011107270A1 Battery and electric apparatus assembly and battery for powering the apparatus, having magnetically controlled studs |
| 09/09/2011 | WO2011107269A1 Assembly including an electric apparatus and a power supply battery sharing an oscillating circuit |
| 09/09/2011 | WO2011107216A1 Battery and electric apparatus assembly and battery for powering the apparatus |
| 09/09/2011 | WO2011088450A3 Smart battery charging system for electrical generator |
| 09/09/2011 | CA2790150A1 Battery and electric apparatus assembly and battery for powering the apparatus |
| 09/09/2011 | CA2790020A1 Battery and electric apparatus assembly and battery for powering the apparatus, having magnetically controlled studs |
| 09/09/2011 | CA2790017A1 Assembly including an electric apparatus and a power supply battery sharing an oscillating circuit |
| 09/08/2011 | US20110216462 Sustained-arc control system on solar battery array |
| 09/08/2011 | US20110216450 Transformer failure analysis system |
| 09/08/2011 | US20110215751 Electric power converter |
| 09/08/2011 | DE102010010396A1 Method for monitoring electrical insulation of winding of e.g. electric motor, involves producing high-frequency partial discharge signal during occurrence of partial discharge in insulation of winding, where pulse is produced from signal |
| 09/08/2011 | DE102010010380A1 Verfahren zum Betreiben einer elektrischen Schaltung A method of operating an electrical circuit |
| 09/07/2011 | EP2100368B1 Semiconductor protective elements for controlling short-circuits at the dc end of voltage source converters |
| 09/07/2011 | CN201966864U 一种旋转变压器激励信号发生电路 A rotary transformer excitation signal generating circuit |
| 09/07/2011 | CN201966863U 智能发电机电压励磁调节器 Smart generator voltage excitation regulator |
| 09/07/2011 | CN201966859U Electric machine controller circuit |
| 09/07/2011 | CN201966858U 一种马达转动补偿感应装置 A motor rotation compensation sensing device |
| 09/07/2011 | CN201966857U 排油烟机直流马达转速控制装置 Hood DC motor speed control device |
| 09/07/2011 | CN201966819U 一种脉宽调制推挽式正输出静电纺丝高压整机电源 One kind of positive output pulse width modulated push-pull high voltage electrostatic spinning machine power |
| 09/07/2011 | CN201966818U 一种变频器系统 One kind of drive system |
| 09/07/2011 | CN201966804U 一种电源补偿器 A power compensator |
| 09/07/2011 | CN201966684U 一种压力闭锁回路电源切换装置 A pressure lock loop power switching device |
| 09/07/2011 | CN201966651U 带自动识别功能的电池充电器控制装置 Battery charger with automatic recognition function control device |
| 09/07/2011 | CN201966641U 一种低功耗控制及激活电路 A low-power control and activation circuit |
| 09/07/2011 | CN201966635U Common-mode charging circuit |
| 09/07/2011 | CN201966618U 高压无功功率自动调节装置 High-voltage reactive power automatic adjustment device |
| 09/07/2011 | CN201966594U 直流大功率电磁铁专用电控柜短路保护器 DC power short circuit protection electromagnets special cabinet |
| 09/07/2011 | CN201966593U 一种防止产生拉幕现象的逆变器电路 A method of preventing generation Curtain phenomenon inverter circuit |
| 09/07/2011 | CN201966592U 一种逆变器保护电路 An inverter protection circuit |
| 09/07/2011 | CN201966591U 一种逆变器拉弧保护电路 An inverter arc protection circuit |
| 09/07/2011 | CN201966590U 电机过载保护装置 Motor overload protection device |
| 09/07/2011 | CN201966589U 电动机智能监控装置 Motor intelligent monitoring device |
| 09/07/2011 | CN201966588U 电机保护断路器 Motor protection circuit breaker |
| 09/07/2011 | CN201966587U 低压穿越用转子保护装置 Low-voltage protection device through the rotor |
| 09/07/2011 | CN201966586U 一种电流互感器过电压保护电路 A current transformer over-voltage protection circuit |
| 09/07/2011 | CN201966585U Over-current protection system for electromagnet needle selector |
| 09/07/2011 | CN201966584U 多功能综合保护器无线报警装置 Multi-function wireless alarm system integrated protection |
| 09/07/2011 | CN201966273U Lithium battery with secondary protective device |
| 09/07/2011 | CN102177045A Connection device |
| 09/07/2011 | CN102176797A Merged illumination and emergent light-emitting diode (LED) fluorescent lamp |
| 09/07/2011 | CN102176629A Control apparatus for a battery circuit, charging control apparatus controlling charging current and electronic device using the same |
| 09/07/2011 | CN102176627A Adaptive measurement and control system for charge-discharge process of integrated storage battery |
| 09/07/2011 | CN102176622A Safety device of cable wire |
| 09/07/2011 | CN102176621A Transformer safety device |
| 09/07/2011 | CN102176620A Lead and wiring harness protection device |
| 09/07/2011 | CN102176619A Safety device for cable |
| 09/07/2011 | CN102176618A Wire safety device |
| 09/07/2011 | CN102176359A Cyclic annular positive temperature coefficient thermosensitive resistor and applications thereof |
| 09/07/2011 | CN102175914A Three-phase low power consumption control intelligent electric energy meter based on zero line judging switching power supply |
| 09/07/2011 | CN101710798B Convertor |
| 09/07/2011 | CN101620259B Method and system for power supply aging |
| 09/07/2011 | CN101540497B Thermal-shutdown circuit and method thereof |
| 09/07/2011 | CN101405922B Transverse flux machine, and rotary engine comprising such a transverse flux machine |
| 09/07/2011 | CN101309014B Lithium battery charger controlled integrated circuit and polar switching switch control circuit |
| 09/07/2011 | CN101257268B Electric motor controller and control method |
| 09/06/2011 | USRE42674 Control method and circuit with indirect input voltage detection by switching current slope detection |
| 09/06/2011 | US8014174 Image forming apparatus |
| 09/06/2011 | US8014110 Variable speed drive with integral bypass contactor |
| 09/06/2011 | US8013557 Motor protection device and method |
| 09/01/2011 | US20110210553 Protection System of a Doubly-fed Induction Machine |
| 08/31/2011 | EP2362520A1 Inverter for photovoltaic systems |
| 08/31/2011 | EP2362513A1 Lightning protection for converters |
| 08/31/2011 | CN201956968U 变频调速器及变频空调器 Inverter and inverter air conditioner |
| 08/31/2011 | CN201956916U 用于将多相交变电压整流成可变的输出直流电压的整流器组件 For multi-phase alternating voltage is rectified to a DC voltage of the variable output rectifier assembly |
| 08/31/2011 | CN201956907U 直流低压电源双桥振荡电子变压器 Bridging low-voltage DC power oscillation electronic transformer |
| 08/31/2011 | CN201956892U 一种igbt驱动及保护电路 One kind of drive and protection circuit igbt |
| 08/31/2011 | CN201956695U 变负载节能控制装置 Variable load energy-saving control device |
| 08/31/2011 | CN201956676U 继电保护装置中使用的双cpu控制的出口电路 Dual cpu export control circuit protection devices used |
| 08/31/2011 | CN201956675U 基于工频载波的分布式发电孤岛检测系统 Frequency Carrier-based distributed generation islanding detection system |
| 08/31/2011 | CN201956674U Trip-out alarming device for low-voltage vacuum feed switch and power supply system of underground substation |
| 08/31/2011 | CN201956673U 太阳能电池的清洗槽防干烧报警电路 Solar cells anti-dry cleaning tank alarm circuit |
| 08/31/2011 | CN201956672U 一种抽油机交流电源过压保护器 One kind of pumping AC overvoltage protection |
| 08/31/2011 | CN201956671U 电机保护断路器 Motor protection circuit breaker |