| 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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| 12/30/2009 | WO2009156513A1 Method for selectively triggering circuit breakers in the event of a short circuit |
| 12/30/2009 | WO2008139285A3 Power converters with component stress monitoring for fault prediction |
| 12/30/2009 | CN201374677Y Three-phase digital power saver |
| 12/30/2009 | CN201374670Y High-power brushless machine controller |
| 12/30/2009 | CN201374668Y Driving circuit of single-coil brushless DC motor |
| 12/30/2009 | CN201374663Y High-voltage switch starting and switching cabinet |
| 12/30/2009 | CN201374648Y Program-controlled switching power supply |
| 12/30/2009 | CN201374625Y Motor with stable operation |
| 12/30/2009 | CN201374588Y Relay protective device for power system with wireless communication function |
| 12/30/2009 | CN201374558Y Novel surge protective device |
| 12/30/2009 | CN201374555Y High-voltage switch protector for coal mines |
| 12/30/2009 | CN201374554Y Electronic protecting device of remote meter check system |
| 12/30/2009 | CN201374553Y Mechanical protecting device of remote meter check system |
| 12/30/2009 | CN201374552Y Control box of flameproof valve electric actuator for coal mine |
| 12/30/2009 | CN201374551Y Fan driving and protecting circuit of electromagnetic oven |
| 12/30/2009 | CN201374550Y Grounding protection detector for single-switch generator rotor |
| 12/30/2009 | CN201374548Y Leakage module with circuit breaker leakage protection function |
| 12/30/2009 | CN201374543Y Closing protective relay |
| 12/30/2009 | CN201374247Y Control protection circuit of automatic winding machine |
| 12/30/2009 | CN201372868Y Electronic fuel pump |
| 12/30/2009 | CN101615787A Two line terminal data-based relay protection realizing method for cable line |
| 12/30/2009 | CN101615786A Grid system protection method based on local information of transformer substation |
| 12/30/2009 | CN101615785A Electric transmission line longitudinal protection method based on parallel reactor |
| 12/30/2009 | CN101615784A Electric transmission line zero-sequence longitudinal protection method based on transformer nonslip point zero-sequence current |
| 12/30/2009 | CN101615783A Zero-sequence current longitudinal differential protection method based on star-triangle connection transformer |
| 12/30/2009 | CN101615782A Method for protecting MCR of circuit breaker |
| 12/30/2009 | CN100576686C Charging and discharging control circuit, and charging type power supply device |
| 12/30/2009 | CN100576683C Method for automatically recognizing power pool multi-area dynamic operation method |
| 12/30/2009 | CN100576682C String complement capacitance transmission line distance protecting method based on model recognition |
| 12/30/2009 | CN100576681C Closed-loop self-adaption emergency control method for large electric network 'centralized coordination, layered control' |
| 12/30/2009 | CN100576680C Intelligent joining-cutting method for large electrified wire netting equipment overloading on-line sensitiveness |
| 12/30/2009 | CN100576679C Phase switch device for three-phase motor |
| 12/30/2009 | CN100576678C Electrical power monitoring device for fan |
| 12/30/2009 | CN100576677C High-credibility excitation inrush current braking method of transformer device |
| 12/30/2009 | CN100576676C Protection method of parallel reactor based on parameter identification |
| 12/30/2009 | CN100576675C Protection device of energy-storage capacitor unit |
| 12/30/2009 | CN100575966C Power conditioner |
| 12/29/2009 | US7639470 Varistor element |
| 12/29/2009 | US7639469 Power sourcing equipment having auto-zero circuit for determining and controlling output current |
| 12/29/2009 | US7638983 Controller of doubly-fed induction generator |
| 12/24/2009 | US20090316451 Apparatus providing protection for power converter |
| 12/24/2009 | US20090316311 Switching regulator and operation control method |
| 12/23/2009 | WO2009154636A2 Methods and apparatus for a cascade converter using series resonant cells with zero voltage switching |
| 12/23/2009 | WO2009153911A1 Battery pack |
| 12/23/2009 | WO2009152540A1 Electric installation structure |
| 12/23/2009 | EP2135338A1 System for acquisition of data and multiplication of signalling and protection contacts in equipments of substations and electric power plants and similar |
| 12/23/2009 | EP2134918A1 Safety device for an actuating system for roller shutters or sliding barriers |
| 12/23/2009 | CN201369730Y Relay protective channel fault detection equipment |
| 12/23/2009 | CN201369699Y Zero-power initiating relay |
| 12/23/2009 | CN201369691Y Solar energy intelligent power supply system |
| 12/23/2009 | CN201369590Y Wind power generation system |
| 12/23/2009 | CN201369559Y Comprehensive control device for power grid voltage |
| 12/23/2009 | CN201369558Y Microcomputer protection device |
| 12/23/2009 | CN201369557Y Reverse battery protection circuit of wind-solar hybrid system |
| 12/23/2009 | CN201369556Y Battery cell protection circuit of lithium battery |
| 12/23/2009 | CN201369555Y Short-circuit protection circuit of switching power supply for frequency converter |
| 12/23/2009 | CN201369554Y 叉车直流电机温度报警装置 Forklift DC motor temperature alarm device |
| 12/23/2009 | CN201369553Y Intelligent electromotor protector |
| 12/23/2009 | CN201369552Y Electromotor protector |
| 12/23/2009 | CN201368987Y Automatic identification circuit for limiting position of TV power-driven base |
| 12/23/2009 | CN101610625A Dynamic energy-saving lighting power supply device |
| 12/23/2009 | CN101609981A Island testing method based on probability prediction and frequency offset |
| 12/23/2009 | CN101609980A Method for realizing circuit optical fiber longitudinal differential protection by matching electronic mutual inductor and electromagnetic mutual inductor |
| 12/23/2009 | CN101609979A Object-oriented bus protection setting method |
| 12/23/2009 | CN101609978A Battery overheat protecting device and method thereof |
| 12/23/2009 | CN101609977A Device for capacitor bank protection and state monitoring and method thereof |
| 12/23/2009 | CN101609976A Protection device and method thereof of multiple motors |
| 12/23/2009 | CN101609975A Motor control device |
| 12/23/2009 | CN101609974A Electrical control circuit of air compressor |
| 12/23/2009 | CN101609973A Arbitration method for multi-CPU microcomputer protection device |
| 12/23/2009 | CN101607542A Power supply abnormality detection circuit for on-vehicle electronic control device |
| 12/23/2009 | CN100574077C Power circuit |
| 12/23/2009 | CN100574038C Electric potential compensation process for reducing neutral point direct current of high-voltage grid transformer |
| 12/23/2009 | CN100574035C Electric power line longitudinal coupling protection judgement method based on integrated impedance |
| 12/23/2009 | CN100574034C Output voltage state indicator for power source chip |
| 12/23/2009 | CN100574033C Plastic shell type electromechanical integration three phase AC electric motor protector |
| 12/23/2009 | CN100574032C Back-to-back differential protection method in high-voltage DC power transmission system |
| 12/23/2009 | CN100574031C Power convertor output protection circuit |
| 12/23/2009 | CN100574030C Leakage current protecting circuit |
| 12/23/2009 | CN100573169C Test method of MOV temperature protecting equipment and MOV temperature protecting equipment tester |
| 12/23/2009 | CN100572817C Air-tight compressor thermal protector |
| 12/22/2009 | CA2298610C Redundant communications in a protective relay |
| 12/17/2009 | WO2009151440A1 Single-phase transient voltage suppression circuit |
| 12/17/2009 | US20090312979 Adaptive Real-Time Analysis Method for Dynamic Signals Generated by Rotary Machines |
| 12/17/2009 | US20090310389 Method and apparatus providing a multi-function terminal for a power supply controller |
| 12/17/2009 | US20090310264 Motorised barrier roller |
| 12/17/2009 | US20090309529 Power branching system and power branching method |
| 12/17/2009 | DE102009023372A1 Elektronische Steuereinrichtung für Fahrzeuge und Lenkungssteuersystem Electronic control device for vehicles and steering control system |
| 12/17/2009 | DE102008034312A1 Voltage intermediate circuit-converter i.e. traction converter, for e.g. rail car, has short circuit unit connected with connection of phase of main-lateral static inverter and with negative busbar of voltage intermediate circuit |
| 12/17/2009 | DE102005024347B4 Elektrisches Bauteil mit abgesichertem Stromzuführungsanschluss Electrical component with fused power supply terminal |
| 12/17/2009 | DE102004050691B4 Antriebsvorrichtung für ein elektrisch betätigtes Fenster Drive device for an electrically operated window |
| 12/16/2009 | EP2133974A1 Accumulation system |
| 12/16/2009 | EP2133506A2 Motorised barrier roller |
| 12/16/2009 | EP2050175B1 Switch and motor assembly |
| 12/16/2009 | CN201365225Y Crane self-excitation brake control cabinet |
| 12/16/2009 | CN201365221Y Servo drive of intelligent high-power DC motor |
| 12/16/2009 | CN201365201Y Input rectifying and filtering circuit of switch power supply |
| 12/16/2009 | CN201365136Y Intelligent charger output protector |
| 12/16/2009 | CN201365121Y Vacuum contactor adhesion controller |
| 12/16/2009 | CN201365120Y Overload protection circuit for switching transistor |