Arnold C Yost

US Patent:

39731723, Aug 3, 1976

Filed:

Nov 11, 1974

Appl. No.:

5/522350

Inventors:

Arnold G. Yost - Barberton OH

Assignee:

The Ohio Brass Company - Mansfield OH

International Classification:

H01T 502

US Classification:

317 61

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.