Protective means for series capacitors

Details Protective means for series capacitors Protective means for series capacitors

H - Electricity

02

H

317/6.5

H02H 7/16 (2006.01) H02H 9/06 (2006.01)

Patent

CA 1232319

ABSTRACT OF THE DISCLOSURE As overvoltage protective means for a series capacitor in a high-voltage network, a metal oxide varistor is arranged in parallel with the capacitor. A spark gap for shunting the resistor in case of overload thereof is connected in parallel with the varistor. A linear resistor is connected in series with the metal oxide varistor. The voltage across the linear resistor is supplied to a trigger device for firing the spark gap when said voltage amounts to a predetermined value. The linear resistor is so adapted to the varistor that said pre- determined voltage value constitutes a smaller part, for example 10% of the whole voltage across the capacitor.

456710

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