Protective circuit for zinc oxide varistors

Details Protective circuit for zinc oxide varistors Protective circuit for zinc oxide varistors

1978-04-10

1979-11-13

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Capacitor protection

361 57, H02H 716

Patent

active

041745299

ABSTRACT:
The invention provides a circuit for determining excessive energy magnitudes or rates of rise of energy in metal oxide varistor devices. The circuit further provides a series of low voltage control pulses for energizing a high voltage pulse generator. The output of the high voltage pulse generator triggers a protective air gap for bypassing the metal oxide varistor device. One application for the invention is for use within a series capacitor protective circuit.

REFERENCES:
patent: 2363898 (1944-11-01), Partington
patent: 3319121 (1967-05-01), Lee
patent: 3619721 (1971-11-01), Westendorp
patent: 3693053 (1972-09-01), Anderson
patent: 3883782 (1975-05-01), Beckwith

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