Abstract :
Joseph Slepian: Mr. Creighton has explained very clearly the necessity for a high discharge rate in lightning arresters, if any real protection to electrical apparatus is to be obtained. If this high discharge rate path is also open to normal dynamic voltage, then, as Mr. Creighton points out, the large drafts of dynamic power which must be handled by the arrester makes it too large and costly to be practical. A clear case is thus made out for the valve type of arrester.