| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission distribution surge absorber having superior discharge withstand current characteristic. SOLUTION: This power transmission distribution surge absorber 21 is provided with a zinc oxide device 2, upper electrode plates 3a and 3b and a lower electrode plate 3c which are each provided on the top surface and under surface of the zinc oxide device 2, spacer 4 for positioning the zinc oxide device 2 at the center, metal-bonding material 7 which is inserted into a through-hole bored in the spacer 4 and disposed, making its one side located at the upper electrode plates 3a and 3b, upper electrode fitting 5 disposed at the edge of the metal-bonding material 7, lower electrode fitting 6 disposed on the lower electrode plate 3c and equipped with a resin injection hole, protective cylinder 8 housing at least the zinc oxide device 2, the electrode plates 3a, 3b and 3c, and the spacer 4, and rubber 9 which is injected into gaps among the zinc oxide device 2, the electrode plates 3a, 3b and 3c, the spacer 4, the protective cylinder 8, and the electrode fittings 5 and 6 and then cured. The rubber 9 is formed through a method in which silicone rubber or the like is injected into the gaps through the rubber injection hole 61 for filling and cured.
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