| 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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| 06/22/2011 | CN201877811U Relay power circuit of electric energy meter |
| 06/22/2011 | CN201877810U High-voltage integrated gate-commutated thyristor (IGCT) overcurrent electronic protective module |
| 06/22/2011 | CN201877809U Battery core protection circuit for lithium battery |
| 06/22/2011 | CN201877808U Battery cell protective circuit of multi-power lithium battery |
| 06/22/2011 | CN201877807U Water shortage protection circuit of discharge pump with brushless motor |
| 06/22/2011 | CN201877806U Automatic stopping device for abnormal rotation speed of fan motor and fan |
| 06/22/2011 | CN201877805U Integrated protection device of alternating current electric motor |
| 06/22/2011 | CN201877804U Single motor protection device for two motors driven by single frequency converter |
| 06/22/2011 | CN201877803U Direct-current motor protection circuit |
| 06/22/2011 | CN201877802U Enabling and disabling device for generator rotor grounding protection |
| 06/22/2011 | CN201877801U Field suppression device based on combination of linear resistor and non-linear resistor |
| 06/22/2011 | CN201877800U Gaseous shield of transformer |
| 06/22/2011 | CN201877799U Universal serial bus (USB) protection circuit |
| 06/22/2011 | CN201877797U High-voltage power safety protection device of electric vehicle |
| 06/22/2011 | CN201877270U Completely self-protected amorphous distribution transformer |
| 06/22/2011 | CN201875253U Electrically operated valve with motor overload protection function |
| 06/22/2011 | CN102106075A Control method for using redundancy in case of a disturbance in a multiphase converter having distributed energy stores |
| 06/22/2011 | CN102106074A Redundant control method for a multiphase converter having distributed energy stores |
| 06/22/2011 | CN102106052A Method and apparatus for fault identification in a power transmission line |
| 06/22/2011 | CN102105231A Electrostatic atomizing device and air conditioner using same |
| 06/22/2011 | CN102104335A Three-terminal voltage regulator for power supply |
| 06/22/2011 | CN102104252A Power system dynamic equivalence method suitable for electromagnetic transient analysis |
| 06/22/2011 | CN102104247A Same-phase power supply equipment relay protection system and method |
| 06/22/2011 | CN102104246A Method and device for reducing time limit combination step progression of distribution network relaying protection |
| 06/22/2011 | CN102104245A Method and system for protecting power battery |
| 06/22/2011 | CN102104244A Overcurrent protection circuit and network equipment |
| 06/22/2011 | CN102103177A Double-bus differential protection line connection analysis and correction method |
| 06/22/2011 | CN102103158A Method for judging adaptive statically stable current based on power angle |
| 06/22/2011 | CN101562401B Three-phase intermediate frequency power supply |
| 06/22/2011 | CN101534004B Method for distinguishing failure and tripping of high-voltage short-distance double-circuit chain-type power network |
| 06/22/2011 | CN101499649B Networking bus bar protecting method based on GOOSE mode |
| 06/22/2011 | CN101459350B GOOSE mode network standby dispensing method based on digital transmission network |
| 06/22/2011 | CN101383503B System and method for detecting short circuit to ground of motor |
| 06/22/2011 | CN101237142B Failure control method for winding line rotor wind power generator system |
| 06/22/2011 | CA2688967A1 Electronic system and protection method for electronic motors |
| 06/21/2011 | US7965527 Temperature protection device for electronic converters and related method |
| 06/21/2011 | US7965526 Self powered supply for power converter switch driver |
| 06/21/2011 | US7965476 Current producing circuit, current producing method, and electronic device |
| 06/21/2011 | US7964986 Drive control apparatus, system and method |
| 06/21/2011 | CA2393170C System for power transformer differential protection |
| 06/16/2011 | WO2011069725A1 Inverter assembly for operating an electric motor |
| 06/16/2011 | WO2011069548A1 Line fault detector |
| 06/16/2011 | WO2011069256A1 Detecting an abnormality of a switch in a high voltage electrical substation |
| 06/16/2011 | WO2011028360A3 Power transistor circuit |
| 06/16/2011 | US20110144843 Permanent magnet temperature estimation |
| 06/16/2011 | US20110141787 Method in frequency converter, and frequency converter |
| 06/16/2011 | US20110141776 Power Supply with Output Overcurrent Detection and Error Latch Protection |
| 06/16/2011 | US20110141632 Reversal connection protecting circuit |
| 06/16/2011 | US20110141630 Supercapacitor leak detection and management |
| 06/16/2011 | US20110140725 Over current protection test system |
| 06/16/2011 | DE102009039770B4 Verfahren und Vorrichtung zum Betrieb eines Spannungszwischenkreis-Umrichters bei Transienten im speisenden Netz Method and apparatus for operating a voltage-source inverter with transients in the supply system |
| 06/16/2011 | DE102009033228B4 Kunststoffverarbeitungsmaschine und Verfahren zum Betreiben einer solchen Plastic processing machine and method for operating such |
| 06/16/2011 | DE102007028704B4 Verfahren zur Überwachung der Ölfüllung eines elektrischen Transformators Method for monitoring the oil filling of an electrical transformer |
| 06/16/2011 | CA2818453A1 Detecting an abnormality of a switch in a high voltage electrical substation |
| 06/16/2011 | CA2783294A1 Line fault detector |
| 06/15/2011 | EP2332226A2 Power supply unit and method for controlling a power supply unit |
| 06/15/2011 | EP2331978A1 Method and device for supervising secondary circuit of instrument transformer in power system |
| 06/15/2011 | CN201869144U Novel control cabinet for positive and negative rotation of electric motor |
| 06/15/2011 | CN201869108U Singlechip control switch power supply |
| 06/15/2011 | CN201868910U Vehicle-mounted direct current power supply system |
| 06/15/2011 | CN201868866U Storage capacitor protective circuit |
| 06/15/2011 | CN201868865U 380V/220V low-voltage power grid IT (Information Technology) distribution system and leakage protection device thereof |
| 06/15/2011 | CN201868864U Protective device for low voltage electric network |
| 06/15/2011 | CN201868863U Multifunctional relay protection signal remote transmission channel switch apparatus |
| 06/15/2011 | CN201868862U Power supply circuit used for fireproof cable and preventing cable fire |
| 06/15/2011 | CN201868861U Passive low-voltage disconnect protection power-saving composite set |
| 06/15/2011 | CN201868860U Overdischarge protective circuit of handheld dust collector |
| 06/15/2011 | CN201868859U Intelligent protecting device for locomotive idling |
| 06/15/2011 | CN201868858U Over-current protection circuit for soymilk machine motor |
| 06/15/2011 | CN201868857U Overcurrent protection circuit for motor of soy milk grinder |
| 06/15/2011 | CN201868856U Integrative protecting device of three-phase alternating current asynchronous motor |
| 06/15/2011 | CN201868855U Rotor ground protection device |
| 06/15/2011 | CN201868854U GIS (gas insulated switchgear) structure changing 500KV main power supply into 66KV side power supply |
| 06/15/2011 | CN201868853U Short-circuit protection control device |
| 06/15/2011 | CN201868852U Lightning-proof high-voltage surge resistant transformer with double-colored light indicating function in blowout |
| 06/15/2011 | CN201868851U Power turn-off system for isolating transformer |
| 06/15/2011 | CN201868850U Anti-leakage circuit |
| 06/15/2011 | CN1909315B Multiple-output electric power and its overcurrent detecting and protecting method |
| 06/15/2011 | CN102099980A System and method for creating and controlling a virtual power distribution unit |
| 06/15/2011 | CN102097994A Generator excitation intelligent switch |
| 06/15/2011 | CN102097990A Motor controller circuit |
| 06/15/2011 | CN102097989A DC (direct current) motor driver |
| 06/15/2011 | CN102097976A Self-powered device for detecting flash arc faults |
| 06/15/2011 | CN102097938A Method and apparatus for controlling short circuit currents in DC/DC switch voltage regulator |
| 06/15/2011 | CN102097925A Concatenated high voltage frequency converter bypassing processing method |
| 06/15/2011 | CN102097865A Method for restoring power supply in power system |
| 06/15/2011 | CN102097850A Method and device for controlling multiple safety protection and energy-saving charging |
| 06/15/2011 | CN102097838A Elementary unit for intelligent battery management system |
| 06/15/2011 | CN102097814A Grid-connected inverter system for wind power generation |
| 06/15/2011 | CN102097808A Method for estimating reliability of electric distribution system containing distributive wind power, photovoltaic and energy storage devices |
| 06/15/2011 | CN102097792A Ground fault protection method of distribution network |
| 06/15/2011 | CN102097791A Fractal dimension-based ultrahigh voltage DC transmission line boundary element method |
| 06/15/2011 | CN102097790A Method for realizing point-to-point distributed bus protection by adopting multi-level cascading |
| 06/15/2011 | CN102097789A Over-current or short-circuit state detection circuit of insulated gate bipolar transistor (IGBT) |
| 06/15/2011 | CN102097788A Protection circuit of storage capacitor |
| 06/15/2011 | CN102097787A Motor phase sequence default phase protector adopting resistive-capacitive (RC) phase-shift circuit |
| 06/15/2011 | CN102097786A Motor protector |
| 06/15/2011 | CN102097785A Method for authenticating sympathetic inrush current in traction substation transformer |
| 06/15/2011 | CN102097784A Relay protective optical fiber digital interface device |
| 06/15/2011 | CN102097783A High-voltage flexible safety device |