| Patents for H02H 1 - Details of emergency protective circuit arrangements (5,580) |
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| 02/23/1999 | US5875088 Electrical switching apparatus employing interlocks for first and second trip functions |
| 02/23/1999 | US5875087 Circuit breaker with integrated control features |
| 02/18/1999 | WO1999008356A1 Method for monitoring a protective gear |
| 02/18/1999 | WO1999007971A2 System and related methods for detecting and measuring the operational parameters of a garage door |
| 02/18/1999 | DE19736181A1 Data transmission device e.g. for switch cabinet or power switch |
| 02/17/1999 | CN1208508A Connection in particular a plug-in connector for TT and TN networks |
| 02/10/1999 | EP0896410A2 Overcurrent detection circuit |
| 02/04/1999 | WO1999005761A1 Surge protectors that indicate failure to a remote location |
| 01/27/1999 | CN1206232A Leakage protector box |
| 01/21/1999 | WO1999003185A1 Solid state overload relay |
| 01/21/1999 | DE19727825A1 Überwachungsverfahren für einen Stromkreis Monitoring method for a circuit |
| 01/19/1999 | CA2094014C Arc detection system |
| 01/14/1999 | WO1999001916A1 Method for monitoring an electric circuit |
| 01/13/1999 | EP0890111A1 Process for producing fault classification signals |
| 01/13/1999 | CN1205045A Window opening and closing apparatus |
| 01/12/1999 | US5859590 Fault sensor device |
| 01/07/1999 | DE19826410A1 Insulation and fault current monitoring method for electrical AC network |
| 01/05/1999 | US5856902 Earth leakage breaker |
| 12/29/1998 | US5854590 For an electric power supply network |
| 12/24/1998 | DE19726639A1 Electronic over-current release for power switch |
| 12/23/1998 | WO1998058435A1 A device for current limitation and protection against faults in a current |
| 12/23/1998 | WO1998058432A1 Method and device for monitoring insulation and fault current in an electrical alternating current network |
| 12/17/1998 | WO1998057416A1 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 |
| 12/17/1998 | WO1998057406A1 A device for supervising in a high voltage converter station |
| 12/16/1998 | CA2237517A1 Ground fault circuit interrupter with enhanced range |
| 12/15/1998 | US5850330 Electronic trip device that detects an imminent drop of the power system voltage and comprises a numerical processing circuit and a thermal memory |
| 12/10/1998 | DE19722898A1 Ferngesteuerte Überwachung eines elektronischen Überstromauslösers Remote monitoring of an electronic overcurrent release |
| 12/09/1998 | EP0882990A2 Method and apparatus for detecting and correcting a saturated current waveform of a current transformer |
| 12/08/1998 | US5847913 Trip indicators for circuit protection devices |
| 12/08/1998 | US5847910 Fault protection device in a transformer |
| 12/03/1998 | WO1998054810A1 Remote-control monitoring of an electronic overcurrent trip |
| 11/25/1998 | EP0880213A1 Earth-leakage detection circuit |
| 11/25/1998 | EP0880159A2 Current-limiting switch |
| 11/24/1998 | US5841618 For an autorecloser |
| 11/17/1998 | US5839092 Arcing fault detection system using fluctuations in current peaks and waveforms |
| 11/11/1998 | EP0738432B1 Device for differentially protecting a power transformer |
| 11/10/1998 | US5835325 Electronic trip device comprising a correcting device |
| 11/10/1998 | US5835321 Arc fault detection apparatus and circuit breaker incorporating same |
| 11/10/1998 | US5835319 Method and apparatus for circuit breaking |
| 11/10/1998 | US5834940 Arcing fault detector testing and demonstration system |
| 11/04/1998 | EP0875090A1 Connector, in particular a plug-in connector for tt and tn networks |
| 11/03/1998 | US5831509 Circuit breaker with sense bar to sense current from voltage drop across bimetal |
| 10/29/1998 | WO1998035237A3 Arcing fault detection system |
| 10/29/1998 | DE19716963A1 Verfahren zur Ermittlung des Ortes einer Teilentladung Method for determining the location of a partial discharge |
| 10/27/1998 | US5828576 Power monitor apparatus and method with object oriented structure |
| 10/22/1998 | WO1998047213A1 Method for determining the location of a partial discharge |
| 10/20/1998 | US5825602 Overcurrent trip device |
| 10/20/1998 | US5825599 Ground fault circuit interrupter system with uncommitted contacts |
| 10/20/1998 | US5825598 Arcing fault detection system installed in a panelboard |
| 10/14/1998 | EP0808462B1 Measuring system for enclosed high-voltage switchgear |
| 10/13/1998 | US5822165 Sequence based network protector relay with forward overcurrent protection and antipumping feature |
| 10/13/1998 | US5821876 Communication interface for bus connected circuit breakers |
| 10/06/1998 | US5818674 Solid state overload relay |
| 10/06/1998 | US5818671 Circuit breaker with arcing fault detection module |
| 10/06/1998 | US5818237 Apparatus for envelope detection of low current arcs |
| 09/29/1998 | US5815357 Device for monitoring a polyphase system connected to a load |
| 09/29/1998 | US5815352 Arc fault detector with limiting of sensed signal to shape response characteristic and circuit breaker incoprorating same |
| 09/17/1998 | WO1998040944A1 Power switch with a circuit for providing auxiliary energy |
| 09/15/1998 | US5808848 Digital circuit interrupter shunt trip accessory module |
| 09/15/1998 | US5808847 Electronic trip device comprising a power supply device |
| 09/15/1998 | US5808846 Combination current sensor and relay |
| 09/15/1998 | US5808845 System for preventing sympathetic tripping in a power system |
| 09/10/1998 | DE19707860A1 Contactless monitoring arrangement for rotary machine part |
| 09/08/1998 | US5805400 Auto-reclosing dead time control apparatus and method thereof for transmission cable protection relay system |
| 09/08/1998 | US5805398 For interrupting current in an electrical system |
| 09/08/1998 | US5805397 Arcing fault detector with multiple channel sensing and circuit breaker incorporating same |
| 09/03/1998 | DE19708651A1 Gasgefüllter Überspannungsableiter mit äußerer Kurzschlußeinrichtung Gas-filled surge arrester with external short-circuit device |
| 09/02/1998 | EP0862261A2 Overcurrent protection circuit and method |
| 08/27/1998 | WO1998037605A1 Gas-filled surge protector with external short-circuiting device |
| 08/27/1998 | WO1998037471A1 Voltage regulator circuit |
| 08/27/1998 | CA2281675A1 Voltage regulator circuit |
| 08/26/1998 | EP0860946A2 Switch circuit having excess-current detection function |
| 08/25/1998 | US5798932 Methods and apparatus for removing error due to decaying offsets from measured power system currents |
| 08/25/1998 | US5798578 Synchronization device for a redundant power supply system |
| 08/20/1998 | DE19702602C1 Driver- and overload protection circuit for electric switch arrangement |
| 08/18/1998 | US5796631 Method and apparatus for monitoring and characterizing power quality, faults and other phenomena in network power systems |
| 08/18/1998 | US5796347 Control of a device in an inaccessible location |
| 08/18/1998 | US5796257 Detecting faults in power lines |
| 08/13/1998 | WO1998035418A1 Circuitry for operating an electronic tripping device in a circuit breaker |
| 08/13/1998 | WO1998035237A2 Arcing fault detection system |
| 08/13/1998 | DE19802831A1 Appliance for measuring alternating current which saturate the current transformer core using secondary currents up to saturation point |
| 08/13/1998 | DE19706040A1 Schaltungsanordnung für den Betrieb eines elektronischen Auslösers eines Leistungsschalters Circuit arrangement for operating an electronic tripping device of a circuit breaker |
| 08/11/1998 | US5793750 System of communicating output function status indications between two or more power system protective relays |
| 07/30/1998 | CA2228012A1 Flexible printed circuit board for use with metal oxide varistor, applicable to a surge protector |
| 07/29/1998 | EP0855778A2 Mains isolator |
| 07/22/1998 | EP0853835A1 Voltage pulse controllable electronic devices |
| 07/22/1998 | EP0720782B1 A drive assembly for power operated doors |
| 07/21/1998 | US5784233 Differential protection device of a power transformer |
| 07/21/1998 | US5783946 Fault type classification algorithm |
| 07/15/1998 | EP0853360A1 Procedure for discriminating between an internal arc and an interruption arc in a metal clad electric installation |
| 07/14/1998 | US5780988 Method for detecting the position, direction of rotation and rotational speed of a rotatably seated part |
| 07/07/1998 | US5777835 Third phase reconstruction from a two current transformer sensor with three-phase true RMS and phase loss determination capabilities |
| 06/30/1998 | US5774320 Modular current transformer for electronic circuit interrupters |
| 06/30/1998 | US5774319 Energy validation arrangement for a self-powered circuit interrupter |
| 06/30/1998 | CA2125026C Electric arc detector |
| 06/24/1998 | CN1185641A Method for detecting an internal arc and a blockign arc |
| 06/16/1998 | US5768084 Combination coaxial surge arrestor/power extractor |
| 06/16/1998 | US5768079 Adaptive ground and phase fault detection for a power distribution system |
| 06/03/1998 | EP0845846A1 Device for fault detection and measurement on electrical power lines |
| 05/28/1998 | WO1998023019A1 Surge protector for power feed line |