EXPLOSION PREVENTIVE ZINC OXIDE ARRESTER

A novel zinc oxide lightning protector is disclosed, wherein end plates (5) are mounted at the ends of an insulator (2) and a zinc oxide element section (13) is arranged between the cover plates (5). Support metal members (28) are mounted on the cover plates (5) between the zinc oxide element section (13) and the insulator (2) to support an insulation cylinder (25) therebetween. A space (30) is formed between at least an end of the insulation cylinder (25) and a corresponding cover plate (5) to absorb the expansion or contraction of the insulation cylinder (25) due to temperature changes, thus preventing the insulation cylinder (25) from deforming. At the same time, the elements are eccentrically arranged against the insulation cylinder (25), thereby to cause the gas flow along peripheral direction so that the laminar flow is changed into a turbulent flow. Thus the heat conduction is improved to improve the radiation characteristic of the zinc oxide element section (13).