Switching device including spark gap for switchingelectrical power

This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switching device (4) in a line (2) between the object and the networ...

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Bibliographische Detailangaben
Hauptverfasser:	HANS BERNHOFF, ANDERS SUNESSON, DAN WINDMAR, THOMAS FOGELBERG, MATS LEIJON, JAN ISBERG, MIKAEL BERGKVIST, LI MING, GUNNAR RUSSBERG, MATS EKBERG
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:	This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switching device (4) in a line (2) between the object and the network/equipment. The line (2) between the object and the network/equipment is connected to an arrangement (5) reducing over-currents towards the object (1), said arrangement (5) being actuatable for over-current reduction with the assistance of an over-current condition detecting arrangement (11-13) within a time period substantially less than the break-time of the switching device (4). The over-current reducing arrangement (5) comprises a switch means (10) with an electrode gap, which may be imparted electrical conductivity for over-current diversion.