Voltage trigger means for a series capacitor protector

Details Voltage trigger means for a series capacitor protector Voltage trigger means for a series capacitor protector

1984-06-15

1986-11-25

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Capacitor protection

H02H 716

Patent

active

046252541

ABSTRACT:
A linear resistor is serially connected to a voltage-dependent metal oxide varistor and the series-connected resistor elements are connected in parallel with the series capacitor of a high voltage network to provide an overvoltage protection circuit for the series capacitor. A spark gap is also connected in parallel with the series-connected resistor elements in case of overload thereof. The voltage across the linear resistor triggers device for firing the spark gap when the voltage across the linear resistor exceeds a predetermined voltage. The resistance of the linear resistor and that of the varistor is dimensioned such that the predetermined voltage constitutes the smaller part of the voltage across the capacitor.

REFERENCES:
patent: 2862152 (1958-11-01), Ryden
patent: 2878428 (1959-03-01), Bockman et al.
patent: 4174529 (1979-11-01), Hamann
patent: 4295174 (1981-10-01), Peterson et al.
patent: 4347539 (1982-08-01), Peterson et al.
patent: 4432029 (1984-02-01), Lundqvist

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