Testing apparatus for cables for voltage testing by means of a VLF voltage

The test device has a direct current voltage source (1), which charges the cable (2) with voltage, and the charged cable switches to the opposite polarity by switching elements (T1). The switching elements are formed by a switcher (S1,S2,S3,S4) of a bridge circuit, where two switchers of a bridge se...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	STEESSER, NICO, GRAMSCH, CHRISTOPH, BERTH, TORSTEN, BECHLER, DIRK, SCHEUSCHNER, SVEN
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The test device has a direct current voltage source (1), which charges the cable (2) with voltage, and the charged cable switches to the opposite polarity by switching elements (T1). The switching elements are formed by a switcher (S1,S2,S3,S4) of a bridge circuit, where two switchers of a bridge section serve for switching the polarity at the cable by a measuring and controlling unit (3). An associated inductor (L1) as energy storage is activated by the controlled switching element during shortfall of a defined increase by the measuring and controlling unit during switching after half-wave.