| 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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| 11/24/2010 | CN201656444U Motor over-current protecting device and PCB platemaking equipment |
| 11/24/2010 | CN201656443U Vibrating motor set frequency control lack-phase overload protection device |
| 11/24/2010 | CN201656442U Safe circuit applied for cigarette case packing machine |
| 11/24/2010 | CN201656441U Safe circuit applied to protective hood |
| 11/24/2010 | CN201656440U Motor protector |
| 11/24/2010 | CN201656439U Generator failure protection circuit of regulator and voltage regulator thereof |
| 11/24/2010 | CN201656438U Security system for micro turbogenerator set |
| 11/24/2010 | CN201656437U Triple protection module for diesel generator set |
| 11/24/2010 | CN201656436U Asynchronous motor protector based on current and highest temperature detection |
| 11/24/2010 | CN201656432U Automatic detecting device for broken yarn of outer-layer yarn of detonating fuse |
| 11/24/2010 | CN201654193U Motor protection testing device |
| 11/24/2010 | CN201649610U Integral lifting scaffold automatic control device |
| 11/24/2010 | CN201646643U Gearbox lock with motor protection device |
| 11/24/2010 | CN1532865B Operation circuit and electric power switch device using it |
| 11/24/2010 | CN101895221A Apparatus for controlling amount of electrical power delivered to load from AC external source |
| 11/24/2010 | CN101895213A Electronic control system and and device for controlling electric quantity |
| 11/24/2010 | CN101895212A Method for supplying power to control circuit of power control device |
| 11/24/2010 | CN101895207A Control circuit and method and power supply device |
| 11/24/2010 | CN101895143A Inverse charging device of electric bicycle |
| 11/24/2010 | CN101895141A Primary power supply system |
| 11/24/2010 | CN101895139A 放电保护电路 Discharge protection circuit |
| 11/24/2010 | CN101895138A Method and system for storage battery management |
| 11/24/2010 | CN101895103A Composite detecting impedence-based distance protection setting method |
| 11/24/2010 | CN101895102A Centralized and integrated application method of relay protection setting calculation |
| 11/24/2010 | CN101895101A Distributed station domain protecting method for switching station |
| 11/24/2010 | CN101895100A Method for preventing false action of direct current single-point grounding of relay and product thereof |
| 11/24/2010 | CN101895099A Protection circuit for distribution box |
| 11/24/2010 | CN101895098A Protecting-two-of-three redundancy monitoring circuit |
| 11/24/2010 | CN101895097A Realization method of protecting circuit with converter |
| 11/24/2010 | CN101895096A Economical and practical open-phase protection device for electromotor |
| 11/24/2010 | CN101895095A Motor open-phase display protection device |
| 11/24/2010 | CN101895094A Method for measuring and calculating overload protection setting value of high-voltage motor |
| 11/24/2010 | CN101895093A External force overload protector of ship outfitting numerical control cutting machine |
| 11/24/2010 | CN101895092A Overload fault condition detection system for article destruction device |
| 11/24/2010 | CN101267109B New method for distance protection surge lock of high voltage output line |
| 11/24/2010 | CN101257273B DC electric machine drive apparatus with power supply by second lithium batteries |
| 11/24/2010 | CN101202440B Protection circuit of relay right action and method for preventing error action of relay |
| 11/24/2010 | CN101162839B Circuit relay protection information exchange method and device thereof |
| 11/24/2010 | CN101162835B Magnetic controllable inductor turn-to-turn fault protection method based on differential protection |
| 11/24/2010 | CN101123349B Island effect detection method based on active frequency deviation and its device |
| 11/24/2010 | CN101102042B A protection device for lightning strike surge protection circuit |
| 11/23/2010 | US7839666 Optimizing operation of DC-to-AC power converter |
| 11/23/2010 | US7839665 System interconnection inverter including overvoltage and negative voltage protection |
| 11/23/2010 | US7839610 Load driving device and electrical device using the same |
| 11/23/2010 | US7839609 Auxiliary lighting circuit for a gaseous discharge lamp |
| 11/23/2010 | US7839117 System and method of detecting a battery fault |
| 11/18/2010 | WO2010132698A2 System and method for over-voltage protection of a photovoltaic string with distributed maximum power point tracking |
| 11/18/2010 | WO2010130562A1 Temperature monitoring for a busbar trunking system |
| 11/18/2010 | US20100292852 Wind mill power flow control with dump load and power converter |
| 11/18/2010 | DE102009021217A1 Temperaturüberwachung für ein Schienenverteilersystem Temperature monitoring for a busbar trunking system |
| 11/18/2010 | DE102009003048A1 Verfahren und Vorrichtung zur Trennung eines Energiespeichers von einem angeschlossenen Netz Method and apparatus for separation of an energy store by a connected network |
| 11/17/2010 | EP1078431B1 Mimic high pass filter in a protective relay |
| 11/17/2010 | CN201639543U Energy saving device of beam pumper |
| 11/17/2010 | CN201639539U Control device of starting and generating integrated system for small internal-combustion engine |
| 11/17/2010 | CN201639523U Pilot circuit of coal mining machine |
| 11/17/2010 | CN201639494U Power supply device |
| 11/17/2010 | CN201639491U Explosion-proof intrinsically safe frequency converter used for mines |
| 11/17/2010 | CN201639357U Voltage regulator protection, measurement and control device of railway power substation applicable to passenger special lines |
| 11/17/2010 | CN201639355U Emergence electrical power device for fire-fighting equipment |
| 11/17/2010 | CN201639331U Multifunctional direct-current power supply for portable photoelectric device |
| 11/17/2010 | CN201639281U Current-limiting type lightning induction surge suppressor |
| 11/17/2010 | CN201639280U Microcomputer bus protector automatically identifying running ways of bus |
| 11/17/2010 | CN201639279U Distribution transformer failure warning device |
| 11/17/2010 | CN201639278U Extensible centralized bus protection device |
| 11/17/2010 | CN201639277U Microcomputer protection monitoring device |
| 11/17/2010 | CN201639276U Anti-overcharge protection circuit and charger utilizing same |
| 11/17/2010 | CN201639275U Security system for power supply unit |
| 11/17/2010 | CN201639274U Protection circuit for high-voltage electrolytic capacitor of switching power supply |
| 11/17/2010 | CN201639273U Switching power supply short-circuit protective circuit |
| 11/17/2010 | CN201639272U Power protection device of motor controller |
| 11/17/2010 | CN201639271U Time-delay overload short-circuit protector |
| 11/17/2010 | CN201639270U Error-proof wiring structure of permanent magnet DC motor |
| 11/17/2010 | CN201639269U Servo system starting protector |
| 11/17/2010 | CN201639268U Servo system fault protector |
| 11/17/2010 | CN201639267U Current feedback type voltage differential protection device |
| 11/17/2010 | CN201639266U Quit protective device for light-operated electronic on-load voltage regulation change-over switch |
| 11/17/2010 | CN201639263U Monitoring device used for decompression and overcurrent of thickener |
| 11/17/2010 | CN201639255U Power distribution system using filtering trap circuit for providing arc-fault tripping coordination system and electric switch equipment |
| 11/17/2010 | CN201638657U Packaging structure for graded insulation neutral point protecting device of 110 kV-level power transformer |
| 11/17/2010 | CN1639651B Data sample and transmission modules for power distribution systems |
| 11/17/2010 | CN1639649B Method and system for conditionally triggered system data capture |
| 11/17/2010 | CN101888727A Light modulator switch |
| 11/17/2010 | CN101888188A Apparatus and method for controlling power converter |
| 11/17/2010 | CN101888185A Switch power circuit and power supply short circuit over-current protection circuit |
| 11/17/2010 | CN101888179A DC/DC control and drive circuit of hybrid power excavator |
| 11/17/2010 | CN101888117A Machine card protecting device in power system |
| 11/17/2010 | CN101888114A Multifunctional power supply of vehicular automotive electronic device |
| 11/17/2010 | CN101888109A Storage battery charge control circuit adopting two-way reverse connecting protection |
| 11/17/2010 | CN101888104A Power management system for power lithium battery pack and control method thereof |
| 11/17/2010 | CN101888097A Micro-power consumption high-capacity lithium-ion power battery group management device |
| 11/17/2010 | CN101888084A Open phase protector of motor |
| 11/17/2010 | CN101888083A Protective device for single-phase transformer applicable to traction substation |
| 11/17/2010 | CN101453112B Overcurrent protection circuit comprising multiple groups of loop load |
| 11/17/2010 | CN101271141B Fault travelling wave network locating method based on travelling wave time difference |
| 11/17/2010 | CN101174783B Arc driving heavy caliber astronomical telescope |
| 11/16/2010 | US7835162 Power converter for compensating a maximum output power |
| 11/16/2010 | US7835161 DC-AC converter and method of supplying AC power |
| 11/16/2010 | US7835125 Circuit for safe forwarding of an analog signal value |
| 11/16/2010 | US7835119 Short-circuit control in the inductance of a voltage step-up converter |
| 11/16/2010 | US7834583 Remotely controlled multiple battery system |