Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 240
a are thesame. It is advisable to reverse the connections of cable or conductors at 2asd 1, and take the average of results obtained in the different positions.jfo thislatter method, battery B should be of low resistance, and well insu-lated. Best conditions for making test, according to Kerape.—… … Fig. 12. Varley Loop Test. — Measure resistance of looped cable or conduc-tors as before. Then connect, as shown in Fig. 13, in which ris an adjustableresistance. Obtain false zero as before. Then close key K, and adjust r forbalance. In testing, when earth current is present, the best results…
Electrical engineering
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