Protective circuit for zinc oxide varistors

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

1979-04-20

1981-03-31

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Capacitor protection

361 57, H02H 716

Patent

active

042597048

ABSTRACT:
The invention provides an improved circuit for determining rates of rise of energy in metal oxide varistor devices. A high voltage transformer is employed to trigger 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: 2072717 (1937-03-01), Marbury
patent: 2363898 (1944-11-01), Partington
patent: 2942152 (1960-06-01), Stoelting
patent: 3619721 (1971-11-01), Westendorp
patent: 4012667 (1977-03-01), Ishida et al.
patent: 4174529 (1979-11-01), Hamann

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