| 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) |
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| 10/08/1997 | EP0799516A1 Electrical circuit breaker |
| 10/08/1997 | EP0799515A1 Circuit and process for operating an adjusting drive |
| 10/08/1997 | EP0799514A1 Circuit for detecting overload in an adjusting drive |
| 10/07/1997 | US5675754 For an ac load control device |
| 10/07/1997 | US5675465 Field ground fault detector and field ground fault relay for detecting ground fault corresponding to DC component extracted from ground fault current |
| 10/04/1997 | CA2201770A1 Protection system for a three-phase distribution transformer immersed inan insulating fluid |
| 10/02/1997 | WO1997036373A1 Electronic branch switching device |
| 10/02/1997 | WO1997036358A1 Safety adapter for ungrounded electrical socket |
| 10/02/1997 | WO1997036308A1 Improved performance of ac solenoid devices |
| 10/02/1997 | DE19612596A1 Anschlags- und Blockiererkennung bei einem Elektromotor Stop and jamming detection in an electric motor |
| 10/02/1997 | DE19612216A1 Elektronisches Abzweigschaltgerät Electronic branch circuit switch |
| 10/01/1997 | EP0798625A2 Process for operating a microcontroller with a sleep mode at reduced operating voltage, device for implementing the process and use of the process and/or device |
| 09/30/1997 | US5673360 Travel Humidifier |
| 09/25/1997 | WO1997018611A3 Energy validation arrangement for a self-powered circuit interrupter |
| 09/25/1997 | DE19612992A1 Fault detection on section of power line between power switches |
| 09/24/1997 | EP0797282A2 Ground fault circuit interrupter with energy storage circuit |
| 09/24/1997 | EP0796515A1 Instrument panel |
| 09/24/1997 | EP0796433A1 Plant parameter detection by monitoring of power spectral densities |
| 09/24/1997 | CN2263410Y Disconnector for resisting steeling utilization of electricity |
| 09/23/1997 | US5671115 Circuit arrangement for driving a contactor |
| 09/17/1997 | EP0795945A2 Protection circuit and method for an electromagnetic interference suppression system |
| 09/17/1997 | EP0795944A2 Method for determining the operating parameters of at least one distance relay |
| 09/17/1997 | EP0795222A1 Process for detecting a ground fault in an electric energy transmission line |
| 09/17/1997 | EP0658275B1 Improvements in and relating to electromechanical relays |
| 09/17/1997 | CN2262746Y Multifunctional power-saving switch operated by pulling or press button |
| 09/16/1997 | US5667711 Circuit breaker incorporating trip coil as shunt resistor in parallel with current limiting polymer |
| 09/10/1997 | EP0794604A2 Overcurrent protector |
| 09/10/1997 | EP0793868A1 Fault current breaker with a cumulative current converter |
| 09/10/1997 | CN2262305Y Safety voltage regulator |
| 09/10/1997 | CN2262303Y Protector for preventing electric fire |
| 09/10/1997 | CN2262296Y 单相脉冲漏电保护器 Single-phase pulse leakage protection |
| 09/09/1997 | US5666256 Electrical power distribution system apparatus-resident personality memory module |
| 09/09/1997 | US5666254 Voltage sensing overcurrent protection circuit |
| 09/09/1997 | US5666073 Power dissipation limiter for high frequency switch |
| 09/09/1997 | US5666060 Test method and apparatus for testing a protective relay system |
| 09/04/1997 | DE19701963A1 Rapid switch-off of faults in busbar plants of transformer stations |
| 09/03/1997 | EP0792533A1 A system for off-mains switching of current consuming devices such as actuators |
| 09/03/1997 | CN1158673A Power cut-off device |
| 09/03/1997 | CN1158527A Communication circuit with fault indication and relative testing module |
| 08/28/1997 | DE19707729A1 Electromechanical switch-gear e.g. for circuit breaker |
| 08/28/1997 | DE19633856C1 Indicating current converter saturation for measuring current in distribution network |
| 08/27/1997 | EP0791999A1 Electronic trip device with a power supply |
| 08/27/1997 | CN2261135Y Scanning-type neon lamp transformer |
| 08/27/1997 | CN2261086Y 漏电断路器 Leakage circuit breakers |
| 08/27/1997 | CN1158019A Short-circuit protection circuit |
| 08/27/1997 | CN1158018A Phase-short and phase sequence detecting, protecting device |
| 08/26/1997 | US5661664 One-terminal data fault location system and process for locating a fault |
| 08/26/1997 | US5661623 Ground fault circuit interrupter plug |
| 08/26/1997 | US5661384 Motor control system and method |
| 08/21/1997 | WO1997030501A1 Arcing fault detection system |
| 08/21/1997 | DE19606244A1 Avoiding overcurrent using capacitors in wattless power compensation regulators |
| 08/20/1997 | CN2260395Y Multi-function double protection remote control leakage protector |
| 08/20/1997 | CN1157667A Electromechanical switching device and arrangement with several such devices |
| 08/19/1997 | US5659453 Arc burst pattern analysis fault detection system |
| 08/19/1997 | US5659283 Indicating fuse block |
| 08/19/1997 | US5659242 Apparatus for comparing two waveforms in real time |
| 08/14/1997 | DE19704166A1 Multiple load overcurrent protection device for time-varying load circuits in motor vehicle |
| 08/14/1997 | DE19605025A1 Distanzschutzverfahren Distance protection method |
| 08/13/1997 | EP0536258B1 Faulted circuit detector having isolated indicator |
| 08/13/1997 | CN2259711Y Phase-defect protector for three-phase electrical appliances |
| 08/13/1997 | CN2259710Y Double-screen digital display current relay |
| 08/12/1997 | US5657195 Overcurrent protection device |
| 08/12/1997 | US5657194 Circuit and method for automatically resetting a solid state relay |
| 08/07/1997 | WO1997028594A1 Distance protection method |
| 08/07/1997 | WO1997028452A1 Method of calculating a resistance |
| 08/07/1997 | DE19605013A1 Verfahren zur Bildung eines Resistanzwertes A method for forming a Resistanzwertes |
| 08/06/1997 | EP0788210A1 Electronic relay |
| 08/06/1997 | EP0788209A1 Ground fault circuit interrupter with emergency auxiliary switching means |
| 08/06/1997 | EP0787996A1 Apparatus for detecting discontinuity of ground conductor and leak detector having function of detecting discontinuity of ground conductor |
| 08/06/1997 | EP0787379A1 Power-on reset circuit |
| 08/06/1997 | EP0787304A1 Numerical comparator |
| 08/05/1997 | US5654857 Ground fault circuit interrupt system including auxiliary surge suppression ability |
| 08/05/1997 | US5654627 Method of automatically changing upper, balanced and lower voltage in electric power saving transformer and the device of the same |
| 07/31/1997 | DE19602911A1 Circuit arrangement for detecting fault current |
| 07/29/1997 | US5652575 Switching arrangement |
| 07/24/1997 | WO1997026698A1 Connector, in particular a plug-in connector for tt and tn networks |
| 07/24/1997 | WO1997026687A1 Socket |
| 07/24/1997 | DE19601884A1 Verbindungseinrichtung, insbesondere Steckvorrichtung für TT- und TN-Netze Connecting means, in particular plug-in device for TT and TN systems |
| 07/24/1997 | DE19601883A1 Steckdose Power Point |
| 07/24/1997 | DE19601881A1 Verification check monitor for industrial and domestic electrical equipment load profiles |
| 07/24/1997 | CA2243865A1 Connecting device in particular a plug-in device for tt and tn systems |
| 07/24/1997 | CA2243466A1 Plug socket |
| 07/23/1997 | EP0785610A2 Monitoring apparatus with self-diagnosis |
| 07/23/1997 | CN1155357A Detector for monitoring integrity of ground connection of electrical appliance |
| 07/23/1997 | CN1155176A Electricity-leakage protecting device with action time detecting function |
| 07/22/1997 | US5650907 Circuit breaker |
| 07/22/1997 | US5650902 Substation for the distribution of electrical energy protected against arcing faults |
| 07/17/1997 | WO1997010636A3 Overcurrent protection circuit |
| 07/16/1997 | EP0783788A1 Current differential protection arrangement |
| 07/16/1997 | EP0783787A1 Power cut-off device |
| 07/16/1997 | EP0783786A1 Graphical display for an energy management device |
| 07/16/1997 | CN1154586A Zero sequence voltage-polarized directional element for protective relays |
| 07/16/1997 | CN1154585A Anti-snag latch assembly for connector |
| 07/15/1997 | US5648917 Self-monitoring circuit, especially for electrical equipment, and in particular for a high tension SF6 circuit breaker |
| 07/15/1997 | US5648887 Electric current limiting device for winch responsive to multiple device states |
| 07/15/1997 | US5648726 Remotely accessible electrical fault detection |
| 07/10/1997 | WO1997024790A1 Ground fault circuit interrupter |
| 07/09/1997 | EP0783197A1 Apparatus for determining an out-of-step condition in a protective relay for power stations |
| 07/09/1997 | EP0782788A1 Method and device for monitoring at least two redundant control channels for an electric-generator exciter |
| 07/09/1997 | EP0782761A1 Differential current protective switch with special core material |