Electric fault current switch triggered by laser pulse in gap between electrodes

An overcurrent diverter for switching fault current includes a switching element 27 with longitudinally spaced electrodes 23. Plasma is formed in the gap between the electrodes when radiant energy is supplied into the gap from a focused laser so that the space between the electrodes is rendered cond...

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Bibliographische Detailangaben
Hauptverfasser:	EKBERG, MATS, RUSSBERG, GUNNAR, WINDMAR, DAN, MING, LI, SUNESSON, ANDERS, LEIJON, MATS, BERNHOFF, HANS, BERGKVIST, MIKAEL, FOGELBERG, THOMAS, ISBERG, JAN
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CORONA DEVICES ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS EMERGENCY PROTECTIVE DEVICES GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES GENERATION OVERVOLTAGE ARRESTERS USING SPARK GAPS RELAYS SELECTORS SPARK GAPS SPARKING PLUGS
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Beschreibung
Zusammenfassung:	An overcurrent diverter for switching fault current includes a switching element 27 with longitudinally spaced electrodes 23. Plasma is formed in the gap between the electrodes when radiant energy is supplied into the gap from a focused laser so that the space between the electrodes is rendered conductive as a high voltage is applied between the electrodes. The radiant energy is applied in two or more spots or areas 28e located along a line extending between the electrodes and corresponding to the conduction path between the electrodes, or in one or more elongated areas, the longitudinal axes of which extend along the direction or the conduction path between the electrodes.