| 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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| 07/23/2008 | CN101228659A Lithium battery management system |
| 07/23/2008 | CN101227185A Electromechanical switching circuitry in parallel with solid state switching circuitry |
| 07/23/2008 | CN101227167A Motor drive apparatus |
| 07/23/2008 | CN101227159A Micro-electromechanical system based electric motor starter |
| 07/23/2008 | CN101227096A Hybrid battery and charging/discharging method |
| 07/23/2008 | CN101227093A Automatic stop charging control circuit of positive and negative combination pulse charge machine |
| 07/23/2008 | CN101227086A Power distribution network cable-line commingle line fault route selection anastomosing method using extension theory |
| 07/23/2008 | CN101227085A Method for ensuring distance to protect backup segment without excess load influence |
| 07/23/2008 | CN101227084A Decision method of longitudinal jointing protection in power system high tension power line |
| 07/23/2008 | CN101227083A Method for preventing high tension power line single phase coinciding with permanent fault |
| 07/23/2008 | CN101227082A Method for automatically correcting bus knife switch secondary contact |
| 07/23/2008 | CN101227081A Method for coordination study for protective devices with dynamic settings, multiple functions and multiple setting groups |
| 07/23/2008 | CN101227080A Control circuit of protective-relay device and operating method thereof |
| 07/23/2008 | CN101227079A Protector special for digital type compressor |
| 07/23/2008 | CN101227078A Overcurrent protection circuit of frequency control motor |
| 07/23/2008 | CN101227077A Breaker for voltage transformer and operating method thereof |
| 07/23/2008 | CN101226683A Numeralization process layer interface processing algorithm |
| 07/23/2008 | CN100405738C Driving protective circuit for inverse resistance type insulated gate bipolar transistor |
| 07/23/2008 | CN100405729C Power supply with surge voltage control functions |
| 07/23/2008 | CN100405685C Device and method for detecting an earth fault and relay with such a device |
| 07/23/2008 | CN100405684C Arc discharge protector |
| 07/23/2008 | CN100405070C Running and loading detection method for converter |
| 07/22/2008 | US7403360 Central vacuum cleaning system control subsystems |
| 07/22/2008 | US7402965 DC common bus self-protection method and system |
| 07/22/2008 | CA2360152C Battery recharging device and method and an automatic battery detection system and method therefor |
| 07/17/2008 | WO2008086248A2 Devices and methods for detecting rates of change of torque |
| 07/17/2008 | WO2008063575A3 Electric power generation system and methods |
| 07/17/2008 | US20080170421 Malfunction Determining Device For Drive Circuit and Drive Unit Including the Same, and Method For Determining Malfunction in Drive Circuit |
| 07/17/2008 | US20080170420 Method and control circuit with input voltage detection for the control and protection of power converter |
| 07/17/2008 | US20080170344 Arcing fault protection system for an air arc switchgear enclosure |
| 07/17/2008 | US20080169785 Hybrid battery and its charging/discharging method |
| 07/16/2008 | EP1944445A2 Pivotable shutter, in particular for windows, doors or gateways |
| 07/16/2008 | CN101223832A Circuit arrangement and method for operating at least one electric lamp |
| 07/16/2008 | CN101222146A Integrated circuit of battery charger |
| 07/16/2008 | CN101222136A Optical fibre differential protection method |
| 07/16/2008 | CN101222135A Relay protection method of power system |
| 07/16/2008 | CN101222134A Power device corresponding to output abnormity and power system having the same |
| 07/16/2008 | CN101222133A Shafting torsional oscillation protecting equipment of steam turbo-generator set |
| 07/16/2008 | CN101222132A Transformer protection method based on double-side non-saturated region equivalent instantaneous inductor |
| 07/16/2008 | CN101222131A On-line automatic control instrument for transformer core current |
| 07/16/2008 | CN101221085A Method for detecting shafting torsional oscillation mode of generator set appended with field excitation damp controller |
| 07/16/2008 | CN100403643C Inverter circuit device with temperature testing circuit |
| 07/16/2008 | CN100403618C Transient state stabilizing analysis and control method for power system |
| 07/16/2008 | CN100403617C Protection method of multiplexer network interface and communication equipment with multiplexer network interface |
| 07/16/2008 | CN100403616C Phase defect testing method for three phase power supply |
| 07/16/2008 | CN100403615C Method for suppressing power transformer excitation surge current and suppressor |
| 07/16/2008 | CN100403194C Control system of hermetic circulating type pure water cooling device for thyristor valve set |
| 07/15/2008 | US7400481 Low cost arc fault detection technique |
| 07/15/2008 | US7400063 Switched-mode power supply |
| 07/15/2008 | CA2291832C Source-transfer switching system and method |
| 07/10/2008 | WO2008080474A1 Adjustment system for a motor vehicle |
| 07/10/2008 | WO2008057809A3 System and method for detecting distribution transformer overload |
| 07/10/2008 | US20080167754 Ozone and other molecules sensors for electric fault detection |
| 07/10/2008 | US20080165552 Switching power supply apparatus |
| 07/10/2008 | US20080165457 Micro-Electromechanical System Based Electric Motor Starter |
| 07/10/2008 | US20080165456 Overspeed protection for sensorless electric drives |
| 07/10/2008 | US20080165455 Resistive high temperature superconductor fault current limiter |
| 07/09/2008 | EP1942027A1 Asymmetric fault detection and protection with AC solid state power controllers (SSPC) |
| 07/09/2008 | EP1149451B2 Method and control mechanism for controlling a drive device for a closing device of a building or an enclosed area |
| 07/09/2008 | EP0988686B1 A device for supervising a high voltage converter station |
| 07/09/2008 | CN201084786Y Safety lithium ion battery |
| 07/09/2008 | CN201084775Y A battery pack |
| 07/09/2008 | CN201082306Y High pressure generating device |
| 07/09/2008 | CN101217233A A distance relay of non-response system oscillation |
| 07/09/2008 | CN101216535A Generator injected type stator ground protection combination type analog experiment panel and test method |
| 07/09/2008 | CN101214644A Frequency conversion electric tool |
| 07/09/2008 | CN100401610C Anti-explosion power source surge protector |
| 07/09/2008 | CN100401609C Improved power-line protection |
| 07/08/2008 | US7397676 Class E amplifier with inductive clamp |
| 07/08/2008 | US7397675 Inverter-filter non-linearity blanking time and zero current clamping compensation system and method |
| 07/08/2008 | US7397224 Voltage regulator with improved protection and warning system |
| 07/08/2008 | US7397222 On-line testable solid state reversing DC motor starter |
| 07/08/2008 | US7397221 Battery protection device, battery protection system using the same, and battery protection method |
| 07/08/2008 | CA2268235C Accessory network for an electronic trip unit |
| 07/03/2008 | WO2008051246A3 Virtual closed loop power distribution system and method |
| 07/03/2008 | US20080158919 Power supply circuit with soft start circuit |
| 07/03/2008 | US20080158755 Battery pack having a protection circuit |
| 07/03/2008 | US20080158754 Terminal leakage monitoring for field devices |
| 07/03/2008 | US20080158743 Protective device for a controlling system of a sewage pump |
| 07/03/2008 | US20080157725 Method and device for detecting errors in charging lines |
| 07/03/2008 | DE102007017858A1 Voltage protection arrangement for electronic device i.e. controller, has voltage detecting unit including switching output connected with output of voltage comparator for indication of impermissible voltage |
| 07/03/2008 | DE102007000854A1 Electrical load e.g. electromagnetic coil, drive device for suction control valve in diesel engine, has CPU determining presence of abnormality of battery, when actual current and current difference exceed respective threshold values |
| 07/02/2008 | EP1940002A2 Relay device and corresponding method |
| 07/02/2008 | EP1940001A2 Relay device and corresponding method |
| 07/02/2008 | EP1940000A2 Circuit protection system |
| 07/02/2008 | EP1939999A2 Circuit protection system |
| 07/02/2008 | EP1938454A2 Soft-start circuit and method for power-up of an amplifier circuit |
| 07/02/2008 | CN201081848Y Unit bypass device for high-voltage frequency converter composed of serially connected units |
| 07/02/2008 | CN101213713A Method and arrangement for triggering a series spark gap |
| 07/02/2008 | CN101212193A Motor starter for mini-type refrigeration compressor |
| 07/02/2008 | CN101212185A Power circuit |
| 07/02/2008 | CN101212182A Power circuit |
| 07/02/2008 | CN101212137A Circuit protection system |
| 07/02/2008 | CN101212136A Relay device and corresponding method |
| 07/02/2008 | CN101212135A Battery protection circuit and battery using the same |
| 07/02/2008 | CN101212134A Over-voltage protection circuit for boosting-type switching power supply |
| 07/02/2008 | CN101212133A Plastic-shell electromechanical integrated three-phase AC motor protector with energy storage and impact device |
| 07/02/2008 | CN101210944A Compressor three phase voltage phase sequence detection method |
| 07/02/2008 | CN101209504A Table tool |
| 07/02/2008 | CN100399670C Method for controlling a direct voltage source and a voltage supply device |