| 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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| 05/11/2011 | CN201830188U Direct-control type two-way alternating current motor driver for electric curtain |
| 05/11/2011 | CN201830010U Three-phase voltage stabilizer for single-phase generator for supplying power remotely and temporarily |
| 05/11/2011 | CN201829944U Grounding-for-lightning device for wind turbine in wind power field |
| 05/11/2011 | CN201829937U Fiber-locking override-trip preventive system |
| 05/11/2011 | CN201829936U Centralized control system of mine explosion-proof and intrinsic safety type combined switch |
| 05/11/2011 | CN201829935U Short-circuit protection circuit for audio power amplifier |
| 05/11/2011 | CN201829934U Overdischarge protection alarm for single storage battery |
| 05/11/2011 | CN201829933U Braid strand breaking machine halt protector of oil sucking machine |
| 05/11/2011 | CN201829932U Overheat protector for motor |
| 05/11/2011 | CN201829931U 变压器保护器 Transformer Protector |
| 05/11/2011 | CN201829930U Improved electric control device of grading machine |
| 05/11/2011 | CN201829929U Novel hard trip loop for large-scale thermal power unit MFT (main fuel trip) |
| 05/11/2011 | CN201829928U Main circuit backwards flowing protection device of uninterruptible power supply and uninterruptible power supply adopting same |
| 05/11/2011 | CN201829927U Electrical equipment load type identification system |
| 05/11/2011 | CN201826671U Electric window control device and automobile window control system comprising same |
| 05/11/2011 | CN102057550A Method for detecting an error in an induction machine |
| 05/11/2011 | CN102055385A Forward and reverse control box of novel motor |
| 05/11/2011 | CN102055368A 100-KVA micro-grid energy storage bidirectional converter |
| 05/11/2011 | CN102055246A Storage battery accumulation system with buffer device |
| 05/11/2011 | CN102055240A Smart charger |
| 05/11/2011 | CN102055178A String and system employing direct current electrical generating modules and a number of string protectors |
| 05/11/2011 | CN102055177A JXD-08 intelligent grounded line selection device |
| 05/11/2011 | CN102055176A Method for protecting electric vehicle contactor and battery management system |
| 05/11/2011 | CN102055175A Fast output short-circuit protection device and method used at primary side of semi-resonant converter |
| 05/11/2011 | CN102055174A Sealing electric motor protector |
| 05/11/2011 | CN102055173A Method for preventing differential protection false operation caused by exciting inrush current of no-load transformer |
| 05/11/2011 | CN102055172A Excitation source for superconducting magnet and its operating method |
| 05/11/2011 | CN102055171A Electric power supply device, electric power receiving device, electric power supply system, and failure recovery method |
| 05/11/2011 | CN101593970B Method for compensating time-domain capacitive current for double-circuit line on same pole |
| 05/11/2011 | CN101478143B Active protective circuit for protecting series operation of semi-conductor device |
| 05/11/2011 | CN101459334B Electrical power system failure information obtaining method |
| 05/11/2011 | CN101394129B Switching control circuit and self-excited DC-DC converter |
| 05/11/2011 | CN101393249B Combination overvoltage protector test equipment |
| 05/11/2011 | CN101340082B Stator grounding protection method of additional electric source intermittent injection type power generator |
| 05/11/2011 | CN101297455B A converter station |
| 05/11/2011 | CN101252277B Startup method of idle load long line |
| 05/11/2011 | CN101247041B Wave record contrastive analysis method of direct current control protection system simulation experiment |
| 05/10/2011 | US7940026 Methods and apparatus for charging a battery in a peripheral device |
| 05/05/2011 | WO2011050502A1 Power converter with indication of different loads and automatic selection of overload protection currents |
| 05/05/2011 | WO2011022165A3 Current limiting apparatus and method |
| 05/05/2011 | WO2011011711A3 Method and apparatus for detection and control of dc arc faults |
| 05/05/2011 | US20110103108 Converter Valve |
| 05/05/2011 | US20110102951 Power supply and the control method for controlling the same and power supply system incorporating such power supplies |
| 05/05/2011 | US20110101929 Condensive load protection device of self-excited generator |
| 05/05/2011 | US20110101927 Power generation system and method with voltage fault ride-through capability |
| 05/05/2011 | DE60020078C5 Verbesserungen an Klemmschutzvorrichtungen für Automobile Improvements to trap protection devices for automobiles |
| 05/05/2011 | DE202010016972U1 Schaltung zum Schutz eines elektrischen Verbrauchers gegen Überspannungen Circuit for protecting an electrical load against overvoltages |
| 05/05/2011 | DE102010004395A1 Switch arrangement for protecting photovoltaic system, has switch device forming bypass to activate protection device lying in flow direction of short circuit current during activation drop of protection device |
| 05/05/2011 | DE102009051293A1 Circuit arrangement for separating voltage source from power supply network of motor vehicle, has engine control device disconnecting supply of control current to switching devices in response to control command |
| 05/05/2011 | DE102009020559B4 Kurzschlusssicherung für eine Elektrofahrzeugbatterie Short circuit protection for electric vehicle battery |
| 05/04/2011 | EP2316260A1 Power assembly for portable equipment with current limitation at low speed and increased breakaway current at starting |
| 05/04/2011 | EP1980015B1 Process for switching off an electrical machine in the event of a malfunction |
| 05/04/2011 | EP1618639B1 Active snubber |
| 05/04/2011 | CN201821317U Frequency-conversion driven and controlled protection detecting and feedback circuit of mine hoist |
| 05/04/2011 | CN201821276U Device for moving electric locomotive in garage and debugging power supply electricity supply of electric locomotive |
| 05/04/2011 | CN201821256U Frequency converter output suppressing peak voltage filter |
| 05/04/2011 | CN201821255U 可控硅调功器 SCR Power Regulator |
| 05/04/2011 | CN201821221U Protecting structure of medium-voltage motor used in hydraulic press system |
| 05/04/2011 | CN201821156U Circuit device of direct current ceiling-fan motor |
| 05/04/2011 | CN201821141U Charger device with direct current voltage reduction and conversion function |
| 05/04/2011 | CN201821107U Contactor type intelligent capacitor |
| 05/04/2011 | CN201821092U Protective circuit for lithium power battery packs |
| 05/04/2011 | CN201821091U Multi-serial lithium battery concatenation protection control circuit |
| 05/04/2011 | CN201821090U Direct-current motor protector and glass lifting device |
| 05/04/2011 | CN201821089U Automatic dislocation correcting controller for alternating-current three-phase motor |
| 05/04/2011 | CN201821088U High-voltage isolation protective circuit |
| 05/04/2011 | CN201821087U Intelligent motor management unit of drawer cabinet |
| 05/04/2011 | CN201821086U Super-prevention intelligent protector |
| 05/04/2011 | CN201821085U Self-power-supply protection device for power transmission and distribution circuit |
| 05/04/2011 | CN201821084U Uninterrupted power supply (UPS) bypass reverse protection circuit |
| 05/04/2011 | CN1790885B Methdo and device for controlling short circuit current of switch mode DC/DC voltage regulators |
| 05/04/2011 | CN102045014A Brushless DC motor controller for four-wheel independently driven electric automobile and control method thereof |
| 05/04/2011 | CN102044978A Power supply circuit and monitoring protection method thereof |
| 05/04/2011 | CN102044864A Switching control method for switching control system of resistors in parallel |
| 05/04/2011 | CN102044863A Electrical switching apparatus including a plurality of rogowski coils and method of calibrating the same |
| 05/04/2011 | CN102044862A Fault characteristic extraction method for hydrogenerator rotor winding turn-to-turn short circuit |
| 05/04/2011 | CN102043360A Power transmitting unit and image forming apparatus applying the same |
| 05/04/2011 | CN101604907B Over-current protective device used for current supply device and relevant current supply device |
| 05/04/2011 | CN101572403B Fast current protection method with channel applicable to distribution networks containing DGs |
| 05/04/2011 | CN101237143B A current differential protection judgement method applicable to multi-end power input line |
| 05/04/2011 | CN101227078B Overcurrent protection circuit of frequency control motor |
| 05/04/2011 | CN101214644B Frequency conversion electric tool |
| 05/03/2011 | US7936141 Motor driver system and method of protecting motor driver |
| 05/02/2011 | CA2719150A1 Condensive load protection device of self-excited generator |
| 04/28/2011 | WO2011049266A1 Cell protection circuit of a battery composed of a plurality of cells |
| 04/28/2011 | WO2011048845A1 Semiconductor apparatus |
| 04/28/2011 | WO2011047428A1 Remote isolation system, method and apparatus |
| 04/28/2011 | WO2010132698A4 System and method for over-voltage protection of a photovoltaic string with distributed maximum power point tracking |
| 04/28/2011 | US20110096450 Combination current sensor and relay |
| 04/28/2011 | US20110096448 Apparatus and method for protecting an electric line |
| 04/28/2011 | US20110096445 Surge Current Detection In A Switch By Detecting Change In A duty Cycle |
| 04/27/2011 | EP2315328A2 String and system employing direct current electrical generating modules and a number of string protectors |
| 04/27/2011 | EP2315042A1 Method and device for indirect monitoring of an electric conductance |
| 04/27/2011 | EP2314149A1 Power assembly for portable equipment with current limitation with hysteresis |
| 04/27/2011 | EP2313955A1 System and method for creating and controlling a virtual power distribution unit |
| 04/27/2011 | CN201813347U Energy saver of electromotor for oil field and oil well |
| 04/27/2011 | CN201813344U Medium-power WTGS (wind turbine generator system) controller |
| 04/27/2011 | CN201813343U Direct-current motor driver for electric curtain |
| 04/27/2011 | CN201813342U Alternating current motor driver of electric curtain |
| 04/27/2011 | CN201813308U Current transformer for high-power electric appliance |