Lighting arrester with leakage current detection

Details Lighting arrester with leakage current detection Lighting arrester with leakage current detection

1983-06-24

1985-03-26

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361130, 324 72R, 324102, 340647, 340664, H02H 904

Patent

active

045077010

ABSTRACT:
A lightning arrester comprises nonlinear resistance discs 2 stacked within a ceramic casing 1, with annular metal cover rings 3, 4 being fixed to the opposite outer ends of the casing. Conductive plates 5, 19 having reduced thickness rupturable central portions are sealed to the inner ends of the casing, with the lower plate 19 being insulated from the lower ring 4 by an insulating ring 20. An ammeter 16 is connected between the conductive plate 19 and ground by a lead wire 21 passing through the ring skirt but insulated therefrom, whereby only leakage current passing through the nonlinear resistance discs is sensed.

REFERENCES:
patent: 2928016 (1960-03-01), Schultz
patent: 3443223 (1969-05-01), Kennon
patent: 3469188 (1969-09-01), Hall
patent: 4259666 (1981-03-01), Takahashi et al.
patent: 4338648 (1982-07-01), Subbarao

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