Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031) |
---|
09/26/1995 | US5453903 Sub-cycle digital distance relay |
09/26/1995 | US5453899 Lightning protection device |
09/26/1995 | US5453669 Motor current detection circuit |
09/21/1995 | DE4409880A1 Monitoring auxiliary wires in differential protection scheme |
09/20/1995 | EP0651921A4 Current limiters in power utility applications. |
09/20/1995 | CN2208282Y Multifunctional monitor for electric charge evasion |
09/20/1995 | CN1108821A Parallel and series protection module |
09/20/1995 | CN1108820A Telephone line overvoltage protection apparatus |
09/19/1995 | US5452223 Arc detection using current variation |
09/19/1995 | US5452174 Power source circuit incorporating a protection device therein and a printer device employing the same |
09/19/1995 | US5452173 Diagnostic circuit protection device |
09/19/1995 | US5452171 Electrostatic discharge protection circuit for integrated circuits |
09/19/1995 | US5451845 Device for protecting a ballast circuit from excess voltage |
09/14/1995 | DE4406902A1 Warning light circuit for protective circuit breakers |
09/13/1995 | EP0671798A1 Electronic thermal protection circuit |
09/13/1995 | EP0671632A2 Field winding ground fault detector and relay |
09/13/1995 | EP0505531B1 Power supply for generating an output voltage mainly of sinusoidal shape |
09/13/1995 | CN2207654Y High voltage earthing protective implement |
09/13/1995 | CN2207653Y Abnormal detection protecting device for transformer and its output |
09/13/1995 | CN2207652Y 多功能空调保护器 Multifunction air conditioning protection |
09/13/1995 | CN2207651Y Circuit security controller |
09/13/1995 | CN2207650Y Single-phase power limit controller |
09/12/1995 | US5450268 Method and apparatus for RMS current approximation |
09/08/1995 | WO1995024014A2 One-terminal data fault location system |
09/08/1995 | CA2184091A1 One-terminal data fault location system |
09/06/1995 | CN2207020Y Ground phase loss protection device |
09/05/1995 | US5448443 Power conditioning device and method |
08/31/1995 | WO1995023450A1 A system for off-mains switching of current consuming devices such as actuators |
08/31/1995 | DE4406496A1 Fault current circuit breaker |
08/30/1995 | EP0669691A1 Circuit for devices for measuring and monitoring electrical currents |
08/30/1995 | EP0669049A1 Switching arrangement |
08/30/1995 | CN2206507Y Anti-stealing electricity device for citizen use |
08/29/1995 | US5446386 Molded case circuit breaker auxiliary power supply plug |
08/23/1995 | CN2206002Y Automatic treater for driver of dc electric machine |
08/22/1995 | US5444590 Solid state power controller with power switch protection apparatus |
08/22/1995 | US5444377 Electronic trip device comprising a test device |
08/17/1995 | DE19505652A1 Instantaneous phase and amplitude measurement circuit + |
08/16/1995 | CN2205599Y Safety device for preventing fraudulent use of electricity |
08/16/1995 | CN1106958A Protection and control device for electrical loads background of the invention |
08/16/1995 | CN1106957A Self-testing circuit breaker ground fault and sputtering arc trip unit |
08/16/1995 | CN1106763A Spinning machine producing cross reel |
08/15/1995 | US5442216 Semiconductor device having active device cells and a monitor cell |
08/10/1995 | DE4406724C1 Electrical power transmission system line differential protection arrangement |
08/09/1995 | EP0666629A2 Test method and apparatus for testing a protective relay system |
08/09/1995 | EP0556191B1 Servomotor-control circuit |
08/09/1995 | CN2205072Y Phase breaking off protector |
08/09/1995 | CN2205071Y Simple and reliable safety unit for household electric appliances |
08/09/1995 | CN2205070Y Limiter for electric supply |
08/09/1995 | CN1106568A Earth fault circuit breaker |
08/08/1995 | US5440441 Apparatus for protecting, monitoring, and managing an AC/DC electrical line or a telecommunication line using a microprocessor |
08/03/1995 | DE4406722C1 Line differential protection system with respective protection unit |
08/02/1995 | EP0665625A2 Method for obtaining an impedance value and for processing in a distance protection device |
08/02/1995 | EP0665623A1 Test device for differential circuit breaker and differential circuit breaker containing the same |
08/02/1995 | EP0665440A1 Device for indicating that a current passage occured in the conductors of lightning protection equipment |
08/02/1995 | EP0664933A1 Sensor for registration of leak current |
08/01/1995 | CA2007778C Directional comparison blocking protective relay system |
07/27/1995 | WO1995020257A1 Residual current safety switch |
07/26/1995 | EP0664594A1 Protection circuit for motor-driven pumps |
07/26/1995 | EP0534950B1 Process for controlling the current supply device of an electrofilter |
07/26/1995 | CN2204073Y Multi-function integrating automatic control protective arrangement for electric appliance |
07/25/1995 | US5436786 Isolator surge protector for DC isolation and AC grounding of cathodically protected systems |
07/25/1995 | US5436785 Electronic trip device comprising an earth protection |
07/20/1995 | WO1995019630A1 A compact coil assembly for transient voltage protection |
07/19/1995 | EP0663712A2 Earth leakage breaker and earth leakage-current protection system |
07/19/1995 | EP0663167A1 Arrangement for the off-mains switching of a control device |
07/19/1995 | EP0663114A1 Digital protective relay arrangement. |
07/19/1995 | EP0615667B1 Arrangement for the off-mains switching of control devices |
07/19/1995 | CN2203805Y Electronic heating relay |
07/19/1995 | CN2203804Y Laboratory safety electric power |
07/13/1995 | WO1995019059A1 Device for differentially protecting a power transformer |
07/12/1995 | EP0662743A1 Electronic device for thermal protection |
07/11/1995 | CA2139815A1 Electronic thermal protection device |
07/08/1995 | CA2139828A1 Advanced surge suppressor incorporating phone line surge protection and electronic switching |
07/05/1995 | EP0661790A2 Three phase throttle current technique |
07/05/1995 | EP0661189A1 DC Power supply circuit |
07/05/1995 | EP0660789A1 Container for a hanger-supported garment |
07/05/1995 | CN2202990Y Single-phase leakage overcurrent ultravoltage protecting switch |
07/05/1995 | CN2202989Y Ground insulation monitoring protector |
07/05/1995 | CN1104809A Relay protector |
07/04/1995 | US5430636 Inverter apparatus and inverter controlling method having fault protection |
06/29/1995 | DE4440449A1 Idling and stoppage control of drives for roller blinds etc and also film screen |
06/28/1995 | CN2202368Y Controlling device of three-phase low-voltage power-supply monitor |
06/28/1995 | CN2202367Y Three-phase four-functional automatic protective switch |
06/28/1995 | CN2202330Y Intellectural automation control safeguard |
06/27/1995 | US5428553 Digital control and protection equipment for power system |
06/27/1995 | US5428495 Electrical switching apparatus with digital trip unit and automatic frequency selection |
06/27/1995 | US5428494 Power line protector, monitor and management system |
06/27/1995 | US5428492 Current driver having voltage transition failure-based short circuit protection circuit |
06/22/1995 | WO1995017032A1 Clocked current supply |
06/22/1995 | DE4343560A1 Fault current protection switch |
06/21/1995 | EP0658275A1 Improvements in and relating to electromechanical relays. |
06/21/1995 | CN2201746Y Electronic voltage loss buckle detaching device circuit |
06/21/1995 | CN1103997A Ground fault circuit interrupter with immunity to wide band noise |
06/20/1995 | US5426592 Circuit breaker trip unit which automatically adapts to operated with a particular display module |
06/20/1995 | US5426590 Device for numerical computation of a symmetrical component of an electtical quantity of a three-phase power system and relay incorporating it |
06/20/1995 | US5426556 Extra protection module of an exchange |
06/20/1995 | US5426553 Apparatus for monitoring grounded states of multiple DC loads of relay system |
06/20/1995 | US5426552 Electrical supply safety socket |
06/14/1995 | EP0657033A1 Detecting faults in power lines. |
06/14/1995 | CN2200883Y Loss of phase protection type ac. contacter |