| 摘要 |
A lightning arrester particularly adapted for extra high voltage AC systems and high voltage DC systems comprising a series of arc gap units and coil assemblies for moving the arcs outwardly. The gap units and coil assemblies are connected in series between a line of the system to be protected and ground without the intervention of series valve blocks. The gap units develop arc voltages greater than the system line to ground voltage so that the gaps can interrupt the power follow current, but the total of the gap voltage and coil assembly voltage does not exceed the allowable protective level at any time. The gap units are designed so that the arcs flutter so as to minimize localized overheating and erosion of the gap plate material.
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