| 摘要 |
PROBLEM TO BE SOLVED: To provide an arrester, in which a pressure force is applied uniformly to a zinc oxide element block, where a plurality of zinc oxide elements are laminated and its outer circumference is covered with a silicone rubber or another polymer. SOLUTION: An upper electrode, provided with a pressing means and an engaging part hanging a tractive member on its both sides, is arranged on the upper end face of a zinc oxide element block, formed by laminating a plurality of zinc oxide elements, with a pressing plate interposed, and a lower electrode provided with an engaging part hanging a tractive member on its both sides is arranged on the lower end face thereof. A tractive member, formed of insulation material such as a ring, is hooked criss crossed on the engaging parts of the upper and lower electrodes, and a pressure force is applied to the zinc oxide block by means of a pressing means so as to pull the lower electrode, with a pressure force being given to the zinc oxide element block, and a zinc oxide element being formed. In addition, an outer cover provided with folds having weatherability and flexibility is provided around the outer circumference of the zinc oxide element module.
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