Oil insulators on the Lauffen-Frankfort line were of two types: three cup and Johnson-Phillips one cup

[Trade Journal]

Publication: The Telegraphic Journal and Electrical Review

London, England
vol. 29, p. 502, col. 1-2



The high tensions of polyphased alternate currents compel us to have recourse to overhead lines specially insulated. The Lauffen-Frankfort experiments will afford us valuable information with regard to the quality of these lines, and we await the results of the experiments of the commission with [missing text] inpatience and curiosity, but it seems now to be uni-[missing text] acknowledged that the employment of large oil insulators with three cups involves a number of useless precautions. The insulators with a single cup, of the Johnson and Phillips type, seem all that is required, and have not up to the present given rise to any inconvenience.


Keywords:Lauffen-Frankfort : Power Transmission : Johnson & Phillips : Oil Insulator
Researcher notes: 
Supplemental information: 
Researcher:Elton Gish
Date completed:September 28, 2008 by: Elton Gish;