| 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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| 08/13/2008 | EP1955424A1 An electric motor |
| 08/13/2008 | CN201100939Y Intelligent protector for electric spanner |
| 08/13/2008 | CN201100920Y Power bank for replaceable battery core |
| 08/13/2008 | CN101243589A Motor drive circuit |
| 08/13/2008 | CN101242460A 配电网监控管理系统 Distribution network monitoring and management system |
| 08/13/2008 | CN101242154A A built-in permanent magnetic brushless DC motor control system for no position sensor |
| 08/13/2008 | CN101242136A Voltage source frequency converter bridge arm direct pass protector for three level integrated gate pole conversion transistor |
| 08/13/2008 | CN101242098A Thunder failure recognition method for row wave protection of DC power transmission line |
| 08/13/2008 | CN101242097A Failure line selection method of small current ground system by using simulation after zero mode current measure |
| 08/13/2008 | CN101242096A Current protection control method and device |
| 08/13/2008 | CN101242095A A permanent failure judgement method for power transmission line with parallel reactor |
| 08/13/2008 | CN101242094A A distance protection method based on distributed parameter model |
| 08/13/2008 | CN101242093A Integrated relay protection system based on multi-channel transient pole direction comparison algorithm |
| 08/13/2008 | CN101242092A Protection circuit assembly and battery pack having the same |
| 08/13/2008 | CN101242091A Protector for electromotor heavy load startup |
| 08/13/2008 | CN101241648A Expressway information messenger |
| 08/13/2008 | CN101241635A Trans-interval sampling method adopting centralized combiner |
| 08/13/2008 | CN101241163A Flicker source recognition method |
| 08/13/2008 | CN101240396A Alloy and heat protector outer casing using the same |
| 08/13/2008 | CN100411292C Power inverter |
| 08/12/2008 | US7411376 Voltage regulator having overcurrent protection circuit and method manufacturing voltage regulator |
| 08/12/2008 | CA2578003A1 Light fixture, operating unit, power rail, circuit, and power-rail adapter |
| 08/07/2008 | WO2008024929B1 Switch mode power converter having multiple inductor windings equipped with snubber circuits |
| 08/07/2008 | US20080186743 DC transformer with an output inductance integrated on a magnetic core thereof and a DC/DC converter employing the same |
| 08/07/2008 | US20080186641 Method and Device For Prevention and Protection of Electrical Transformer Against Explosion and Fire |
| 08/07/2008 | US20080184519 Central vacuum cleaning system control subsystems |
| 08/07/2008 | DE102005025160B4 Verfahren zum Löschen von in einer Schaltung auftretenden Latch-Ups sowie Anordnungen zum Durchführen des Verfahrens A method of erasing occurring in a circuit latch-up, as well as arrangements for carrying out the method |
| 08/07/2008 | DE10115675B4 Verfahren zum Betreiben eines Motors sowie Verwendung A method of operating an engine, and using |
| 08/06/2008 | EP1953910A1 Method and apparatus for DC bus capacitor pre-charge |
| 08/06/2008 | EP1953427A2 Control apparatus for transmission mechanism |
| 08/06/2008 | EP1952500A1 Device for limiting current of electric appliance |
| 08/06/2008 | EP1952499A1 A tool for generating fault response tolerances for a switching device |
| 08/06/2008 | EP1794023B1 Power output apparatus and vehicle having the same |
| 08/06/2008 | EP1558939B1 Apparatus and method for simultaneously detecting the power state of a plurality of circuit breaker switches |
| 08/06/2008 | CN201097437Y Printed circuit board connector component and ropeless dynamic tool with this component |
| 08/06/2008 | CN101237145A M-series modulation and variance judgement based parallel network active alone island detection system and method |
| 08/06/2008 | CN101237144A Relay device and corresponding method |
| 08/06/2008 | CN101237143A A current differential protection judgement method applicable to multi-end power input line |
| 08/06/2008 | CN101237142A Failure control method for winding line rotor wind power generator system |
| 08/06/2008 | CN101237141A A 8-side transformer differential principle for avoiding CT parallel connection |
| 08/06/2008 | CN101236225A Electric network transformer monitoring device and monitoring method |
| 08/06/2008 | CN100409563C Motor intelligent power-saving protector |
| 08/06/2008 | CN100409531C Differential pressure regulating protector of resistor set |
| 08/06/2008 | CN100409530C Converter protector |
| 08/06/2008 | CN100409529C Over low voltage protection device for coil drive device |
| 08/06/2008 | CN100409528C Interphase and zero-sequence fault component braking method for preventing malfunction for tranformer protection |
| 08/06/2008 | CN100409527C Phase sequence synthesizing method for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 08/06/2008 | CN100409526C Phase-splitting integrated brake device for preventing multiple-branch voltage transformer differential protection unwanted operation by utilizing fault components |
| 08/06/2008 | CN100409525C Three-phase integrated brake device for preventing multiple-branch voltage transformer differential protection unwanted operation by utilizing fault components |
| 08/06/2008 | CN100409524C Three-phase brake device for preventing multiple-branch voltage transformer differential protection unwanted operation by utilizing fault components |
| 08/06/2008 | CN100409523C Three-phase brake device for preventing multiple-branch voltage transformer differential protection unwanted operation |
| 08/06/2008 | CN100409522C Three-phase brake device for preventing voltage transformer differential protection unwanted operation by utilizing fault components |
| 08/06/2008 | CN100409019C Zero sequence direction measurement element with negative sequence negative direction blocking |
| 08/06/2008 | CN100408382C Vehicle electrical protection device and system employing same |
| 08/05/2008 | US7408796 Integrated synchronous rectifier package |
| 08/05/2008 | US7408793 Active snubber |
| 08/05/2008 | US7408752 On-chip ESD protection circuit for compound semiconductor heterojunction bipolar transistor RF circuits |
| 08/05/2008 | US7408325 Battery charging method |
| 08/05/2008 | US7408269 Multi-level power supply system for a complementary metal oxide semiconductor circuit |
| 08/05/2008 | CA2346732C A protective relay-based monitoring system of dc power within an electric power substation |
| 07/31/2008 | WO2008090776A1 Electric leak detecting circuit and electric leak detecting method |
| 07/31/2008 | WO2008090586A1 Improved apparatus for electronic-control automatic powering of sliding gates |
| 07/31/2008 | US20080180059 Protection methods, protection circuits and protection devices for secondary batteries, a power tool, charger and battery pack adapted to provide protection against fault conditions in the battery pack |
| 07/31/2008 | US20080180050 Movable barrier operator auto-force setting method and apparatus |
| 07/31/2008 | DE202008007516U1 Anordnung in Verbindung mit einer Gleichrichterbrücke eines Frequenzumrichters An arrangement in connection with a rectifier bridge of a frequency converter |
| 07/31/2008 | DE10354443B4 Halbleiterbauelementanordnung mit einer Defekterkennungsschaltung A semiconductor device assembly with a defect detection circuit |
| 07/31/2008 | DE102007004480A1 Drivers device for operating switch of power converter, has two potential sides and drive device and switch are arranged in another potential side, comprising, connection device, which is formed to control switch |
| 07/31/2008 | DE102007003545A1 Kraftfahrzeugbordnetz mit Verpoldetektor Motor vehicle electrical system with reverse polarization |
| 07/30/2008 | EP1950861A1 Motor vehicle electrical system with polarity reversal detector |
| 07/30/2008 | EP1950006A1 Angle grinder |
| 07/30/2008 | EP1949517A1 Fault protection system and method for an electrical power distribution system |
| 07/30/2008 | EP1782516A4 Resistor dropper power supply with surge protection |
| 07/30/2008 | EP0988687B1 A method for communication between a low potential level and a valve located on high voltage potential in a high voltage converter station as well as a device for such a communication |
| 07/30/2008 | CN201094145Y Low-voltage electrified wire netting ground fault positioning device |
| 07/30/2008 | CN201094144Y Accumulator cell apparatus and protective circuit, electronic device thereof |
| 07/30/2008 | CN101233660A Fault management of HTS power cable |
| 07/30/2008 | CN101232237A Multiple output power supply |
| 07/30/2008 | CN101232177A HVDC transmission line distance protecting method |
| 07/30/2008 | CN101232176A Non-effective earthing distribution system fault locating method based on neutral point of transient traveling wave |
| 07/30/2008 | CN101232175A Power supply circuit using current limiting technique |
| 07/30/2008 | CN101232174A Motor intelligent monitoring apparatus |
| 07/30/2008 | CN101232173A Motor protector |
| 07/30/2008 | CN101232171A Television power supply protective circuit |
| 07/30/2008 | CN101231529A Systems and methods of tracking partition system performance |
| 07/30/2008 | CN101231327A Apparatus and method for measuring battery allowance |
| 07/30/2008 | CN100407538C 视频监控设备防雷器 Video surveillance equipment mine |
| 07/30/2008 | CN100407537C 电子设备中的开关型电源保护电路 Electronic equipment switch-mode power supply protection circuit |
| 07/30/2008 | CN100407536C 防止变压器保护误动的故障分量最大零序制动方法 Prevent transformer protection fault component malfunction maximum zero-sequence braking method |
| 07/30/2008 | CN100407535C 防止变压器保护误动的最大故障分量差流制动装置 Prevent malfunction of the largest transformer protection fault component differential current brakes |
| 07/30/2008 | CN100407534C 防止变压器差动保护误动的三相制动装置 Three-phase transformer differential braking device to prevent the protection malfunction |
| 07/30/2008 | CN100406296C Traction vehicle with traction transformer |
| 07/29/2008 | US7405911 Circuit arrangement with a voltage link converter |
| 07/29/2008 | CA2232562C Electrical power distribution and communication system for an underwater cable |
| 07/24/2008 | WO2008067299A3 Method and system for isolating disturbances to the power distribution system |
| 07/24/2008 | US20080175718 Compressor control device and method for controlling a compressor |
| 07/24/2008 | DE102007002934A1 Method for monitoring charging condition of accumulator for autonomous mobile robot, particularly autonomous window cleaner, which involves measuring static and dynamic behavior of terminal voltage by monitoring circuit |
| 07/24/2008 | DE10041606B4 Elektromotorischer Antrieb und Verfahren zum Betreiben eines elektronisch kommutierten Elektromotors Electric motor drive and method for operating an electronically commutated electric motor |
| 07/23/2008 | EP1946420A1 Adjusting device and control device of a vehicle |
| 07/23/2008 | EP1946419A1 System to control, protect and monitor the status of forced cooling motors for power transformers and similar |
| 07/23/2008 | CN201090470Y Bus air conditioner direct current brushless condensing fan |