Surge arrester of the multi-gap type

Details Surge arrester of the multi-gap type Surge arrester of the multi-gap type

1974-11-11

1976-08-03

Miller, J D

317 68, 317 70, H01T 502

Patent

active

039731723

ABSTRACT:
A surge arrester of the multi-gap type made up of a series of gap units and a non-linear resistance disposed in a conventional porcelain housing. The gap units comprise a series of metal electrodes in the form of thin discs or plates arranged in a stack and spaced by ceramic insulating studs or posts; a surface of at least one of the electrodes in each gap unit, except in the area where the sparkover is to take place, is insulated to prevent wandering of the arcs over the surfaces of the plates to the edges of the plates where sparkover might take place along or across the edges of the whole series of plates making up the arrester. Such an action would greatly reduce the voltage of the multi-gap almost to the voltage of a single gap instead of an entire series of gaps. By eliminating this danger of wandering, the diameter of the plates can be substantially reduced, thus reducing the size and cost of the entire arrester assembly.

REFERENCES:
patent: 1017648 (1912-02-01), Chapman et al.
patent: 2623192 (1952-12-01), Kalb
patent: 2640096 (1953-05-01), Kalb
patent: 2648796 (1953-08-01), Manke
patent: 3524099 (1970-08-01), Stetson
patent: 3869650 (1975-03-01), Cunningham et al.

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