| 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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| 05/14/2009 | DE102007036680B4 Schaltungsvorrichtung zur Erkennung einer unterbrochenen Masseleitung Circuit device for detecting a broken ground wire |
| 05/14/2009 | DE102006029475B4 Effiziente Einschaltstrom-Begrenzungsschaltung mit bidirektionellen Doppelgate-HEMT-Bauteilen Efficient inrush current limiting circuit with bidirectional dual-gate HEMT devices |
| 05/14/2009 | DE102005018173B4 Schalteinrichtung zur sicheren Betriebsunterbrechung von Photovoltaikanlagen Switching means for safe interruption of photovoltaic systems |
| 05/13/2009 | EP2058935A1 Motor drive device |
| 05/13/2009 | EP2058914A2 Augmentation of ambient temperature and free convection effects in thermal circuit breaker trip curve approximations |
| 05/13/2009 | CN201238279Y Activation module of DC variable-frequency refrigerator |
| 05/13/2009 | CN201238062Y Lithium battery pack |
| 05/13/2009 | CN101431233A Detection protection circuit of constant power output power supply |
| 05/13/2009 | CN101431232A Integrated protector for electric motor |
| 05/13/2009 | CN101431231A High-reliability deexcitation apparatus used for hydro-turbo generator set |
| 05/13/2009 | CN101431230A Transforming plant integrated protection system based on IEC61850 |
| 05/13/2009 | CN101431229A Asynchronous switch-on protection method for generator set |
| 05/13/2009 | CN101431228A Thermal protection control method and system |
| 05/13/2009 | CN101431220A Live conductor stringing and splicing method and apparatus |
| 05/13/2009 | CN101427862A Solar energy automatic remote control umbrella |
| 05/13/2009 | CN100488024C Current controller and method |
| 05/13/2009 | CN100488016C Electronic control systems and methods |
| 05/13/2009 | CN100487999C Device for preventing bearing of electric machine from damage by harmful electric current |
| 05/13/2009 | CN100487998C Digital type thermal protection method for electromotor |
| 05/13/2009 | CN100487995C Short-circuit protective circuit |
| 05/13/2009 | CN100487475C Method and apparatus of detecting internal motor faults in an induction machine |
| 05/12/2009 | US7532955 Distributed protection system for power distribution systems |
| 05/12/2009 | US7532445 Transient voltage clamping circuit |
| 05/12/2009 | US7532443 Current-limiting device having a superconductive switching element |
| 05/12/2009 | US7531991 Output voltage regulator for engine-driven generator |
| 05/12/2009 | US7531988 Battery pack having a protection circuit |
| 05/12/2009 | US7531983 Method of controlling startup current of motor and disk drive using the method |
| 05/12/2009 | US7531916 Protection circuits for hybrid power systems |
| 05/07/2009 | WO2009058024A1 Device arranged for converting an ac input voltage to a dc output voltage |
| 05/07/2009 | WO2009057866A2 Method for controlling motor of air conditioner and motor controller of the same |
| 05/07/2009 | WO2009057387A1 Earth leakage detection method |
| 05/07/2009 | WO2007035724A3 Soft-start circuit and method for power-up of an amplifier circuit |
| 05/07/2009 | US20090116155 Automated Anti-Explosion System and Method for Integrated-Drive-Generator |
| 05/07/2009 | US20090116153 Power conversion system and over-load protection device thereof |
| 05/07/2009 | US20090115364 Electric motor driving device, and air conditioner using the same |
| 05/06/2009 | EP2056424A2 System and method for control of power distribution networks |
| 05/06/2009 | EP1902598B1 Circuit arrangement and method for operating at least one electric lamp |
| 05/06/2009 | CN201234208Y Switch power supply for chain type convertor power unit controller |
| 05/06/2009 | CN201234207Y Portable intrinsically safe electric power |
| 05/06/2009 | CN201234165Y Automatic control apparatus for power distribution system |
| 05/06/2009 | CN201234154Y Self-breaking multiple current constant-current charger |
| 05/06/2009 | CN201234152Y Lithium battery protection board for GPS measuring instrument |
| 05/06/2009 | CN201234150Y Three strip lithium battery charging management circuit for mobile DVD |
| 05/06/2009 | CN201234126Y Multiplex protection switching device between low-speed optical fiber interface and 2M transmission line |
| 05/06/2009 | CN201234125Y Single-phase grounding failure automatic processing equipment for low current grounding system |
| 05/06/2009 | CN201234124Y Single-phase grounding failure wire selection automatic processing equipment for low current grounding system |
| 05/06/2009 | CN201234123Y Battery protection circuit and battery pack module |
| 05/06/2009 | CN201234122Y Self-protection switch electric power |
| 05/06/2009 | CN201234121Y Power supply circuit for cooling blower fan |
| 05/06/2009 | CN201234120Y Novel comprehensive protector for mining coal drill |
| 05/06/2009 | CN201234119Y Integrated motor synthetic monitoring apparatus |
| 05/06/2009 | CN201234118Y Protector for electromotor heavy load startup |
| 05/06/2009 | CN201233420Y Multifunction ammeter |
| 05/06/2009 | CN101427435A Device for operating an electric motor |
| 05/06/2009 | CN101426102A Tuner short circuit protection system for analogue digital integrated television and protection method thereof |
| 05/06/2009 | CN101425770A Stepless speed regulator for DC electric motor |
| 05/06/2009 | CN101425761A Serial parallel structure electric power transformation device |
| 05/06/2009 | CN101425748A Vehicle mounted universal power supply adapter |
| 05/06/2009 | CN101425693A Battery pack |
| 05/06/2009 | CN101425692A Protection circuit for battery pack and battery pack having the same |
| 05/06/2009 | CN101425685A Internal bridge connecting and protection implementing method for linkage standby electricity supply mode |
| 05/06/2009 | CN101425684A Modular lightning protection device for electric power easy for replacement |
| 05/06/2009 | CN101425683A Secondary clamping board device for electrical power system relay protection |
| 05/06/2009 | CN101425682A Electric grid relay protection constant value on-line check integrated data processing method |
| 05/06/2009 | CN101425681A Relay protection on-line check method for electric grid system |
| 05/06/2009 | CN101425680A Overdriving protection method and circuit |
| 05/06/2009 | CN101425679A Protective circuit module and secondary battery pack including the same |
| 05/06/2009 | CN101425678A Battery protection method and system |
| 05/06/2009 | CN101425677A Anti-fraud induction motor protector |
| 05/06/2009 | CN101425672A System and method for control of power distribution networks |
| 05/06/2009 | CN100486072C Circuit for continuous current-limiting point regulation and temperature protection of switching power source |
| 05/06/2009 | CN100486071C Apparatus and method for protecting electric source |
| 05/06/2009 | CN100486070C Device for stoping a single-phase asynchronous motor with phase-shifting capacitor |
| 05/05/2009 | US7529109 Driving circuit for switching DC power |
| 05/05/2009 | US7529108 Full-bridge digital power converter controller and method to compensate volt-second imbalance |
| 05/05/2009 | US7529107 Power supply and electronic ballast with voltage clamping circuit |
| 05/05/2009 | US7529068 Protective circuit for a frequency converter |
| 05/05/2009 | US7528611 Methods and system for detecting winding faults in a generator with parallel windings |
| 05/05/2009 | US7528584 Power MOS voltage regulator for batteries |
| 05/05/2009 | US7528583 Brushless generator |
| 04/30/2009 | WO2009053161A1 Method for detecting a load drop |
| 04/30/2009 | WO2009032070A3 Method and system for limiting a current in an alternating current generator |
| 04/30/2009 | US20090109592 Fire safe arrester isolator |
| 04/30/2009 | US20090108808 Battery Protection Mechanism |
| 04/30/2009 | US20090108786 Motor protection device and method |
| 04/30/2009 | DE102008052852A1 Schaltungsanordnung für ein Elektrowerkzeug Circuit arrangement for a power tool |
| 04/30/2009 | DE102008045410A1 Halbleitervorrichtung mit IGBT mit eingebauter Diode und Halbleitervorrichtung mit DMOS mit eingebauter Diode A semiconductor device having IGBT with built-in diode and semiconductor device having DMOS with built-in diode |
| 04/30/2009 | DE102004026114B4 Diagnosesysteme und Verfahren für eine Vorrichtung zur Erfassung eines Leckstroms Diagnostic systems and methods for a device for detecting a leakage current |
| 04/30/2009 | CA2639447A1 Battery-powered fluorescent lamp |
| 04/29/2009 | CN201230294Y Starting, current limiting protector for DC motor |
| 04/29/2009 | CN201230204Y Logic test device for microcomputer type protection monitoring module in power supply and distribution system |
| 04/29/2009 | CN201230203Y Motor power protection switch |
| 04/29/2009 | CN201230202Y Synchronous electric machine step failing out detection device |
| 04/29/2009 | CN201230201Y Output controller for motor protector |
| 04/29/2009 | CN101421883A Battery pack and method for detecting disconnection of same |
| 04/29/2009 | CN101420131A Energy saving control method for lithium ionic battery protection circuit and control circuit thereof |
| 04/29/2009 | CN101420120A Method for dynamically simulating 1000kV line protection experiment |
| 04/29/2009 | CN101420119A Protection circuit used for brushless DC motor |
| 04/29/2009 | CN101420118A Drive control device of three-phase motor |
| 04/29/2009 | CN101420115A Method and device for cutting off electric power |