Gola Lightning arresters

[Trade Journal]

Publication: American Electrician

New York, NY, United States
vol. 14, no. 8, p. 391, col. 3

Abstracts from Foreign Contemporaries

Lightning Arresters. The Elektrotechnische Zeitschrift describes the system of lightning protectors made by G. Gola. Instances are given in which atmospheric discharges destroyed machines while the line was protected by ordinary lightning arresters and at times when there were no thunder storms. The ordinary lightning arresters showed no signs of having been acted upon and it was found that the discharge had gone from a wire of the armature to one or several pole-shoes; although this path was much longer than to any part of the earthed case and also much longer than the air-gap of the lightning arresters. It appears, therefore, that discharges of this kind are directed by a strong magnetic fie