Surge protection assembly for insulating flanges

Details Surge protection assembly for insulating flanges Surge protection assembly for insulating flanges

1990-05-01

1992-01-21

Evans, Geoffrey S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361126, H02H 906

Patent

active

050832336

ABSTRACT:
A protective device for an insulating flange of a high voltage transmission system comprises a varistor unit in combination with a spark gap. The varistor unit is clamped between a pair of radially extending stub plates connecting the unit in shunt with the insulating flange. The spark gap is defined by a pair of spark electrodes mounted on the stub plates radially outwardly of the varistor unit so that the latter shields the insulating flange from molten metal and heat generated at the spark gap should the varistor unit fail.

REFERENCES:
patent: 2761979 (1953-04-01), Wilson
patent: 2907910 (1959-10-01), Marsteller
patent: 2959692 (1960-11-01), Marx
patent: 4100588 (1978-07-01), Kresge
patent: 4161012 (1979-07-01), Cunningham
patent: 4987511 (1991-01-01), Hopkinson et al.
Techniques for the Protection of Gas-Insulated Substation to Cable Interfaces by N. Fujimoto, S. J. Croall and S. M. Foty, IEEE Trans Power Delivery, vol. 3, No. 4, Oct. 1988, pp. 1650-1655.

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