NDLI: Enclosed spark gaps

Content Provider	IEEE Xplore Digital Library
Author	Berkey, Wm. E.
Copyright Year	1931
Abstract	Ionizing radiation has been discovered to be present in spark gaps of the type commonly used in commercial lightning arresters for the last 15 years. This radiation is emitted from discharges near the insulator-electrode contacts, when impulse voltage is applied to the gap. Ionization is produced by the absorption of this radiation in the spark gap. This effectively reduces the time lag of breakdown. The presence of this radiation explains why higher impulse breakdown voltages are obtained with a sphere gap in the dark than with a lightning-arrester spark gap with porcelain spacer. The radiation effect observed here is similar to that investigated by Wynn-Williams in the three-point gap. This paper tells of experiments performed to determine the reason for the low impulse ratios observed with rutile-spacer spark gaps. The results of this study explain the reason for the low impulse ratio of the “quench gap” and the “ionization gap” utilized in lightning arresters. This new information aids in understanding why low impulse ratios are obtained in high-voltage lightning-arrester spark gaps.
Starting Page	429
Ending Page	432
Page Count	4
File Size	1718843
File Format	PDF
ISSN	00959197
Volume Number	59
Issue Number	8
Language	English
Publisher	American Institute of Electrical Engineers
Publisher Date	1940-08-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrodes Porcelain Spark gaps Discharges (electric) Sparks Films
Content Type	Text
Resource Type	Article

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